CN108838090A - It is a kind of to divide device and separation method by tobacco leaf, offal and with the separated wind of stalk blade - Google Patents

Abstract

The invention discloses a kind of by tobacco leaf, offal and divide device and separation method with the separated wind of stalk blade, it includes the wind separating bin (10) being obliquely installed, wind separating bin (10) is equipped with Upstream section, middle reaches section and tract, wherein the cross-sectional area of middle reaches section is maximum, the Upstream section of wind separating bin (10) is equipped with feeding air hose (2) and main blast pipe (4), feeding air hose (2) is equipped with feed inlet (1), the discharge port end of feeding air hose (2) is equipped with feeding air hose regulating device (3), the Upstream section of wind separating bin (10) is equipped with downward first outlet (6), middle reaches section is equipped with downward second outlet (7), tract is equipped with third outlet (8), third, which exports, is equipped with negative-pressure air fan at (8).The main main blast pipe present invention of blast pipe is fed using gas strip mode, and than conventional material casting roller and high-speed belt feeding manner, gas strip can be such that material distribution in unit volume more disperses, and improves wind component efficiency.

Description

An air separator and separation method for separating tobacco leaves, tobacco stems and stalked leaves

technical field

The invention belongs to the field of cigarette processing equipment, and in particular relates to an air separator and a separating method for separating tobacco leaves, tobacco stems and blades with stems.

Background technique

The principle of air separation is widely used in tobacco processing, including different forms of use in leaf threshing and redrying, silk making, and rolling processes. Leaf threshing air separation is the core process of leaf threshing and redrying. Baked product quality and various economic indicators. Based on the principle of material suspension, most traditional air separation equipment can only separate light and heavy materials, and the air separation efficiency of a single equipment is low, so it is necessary to install multi-stage air separation equipment (generally 11 to 18 levels) on the production line ), not only occupy a large space, but also lead to repeated processing of materials and serious crushing and increase the load of the defoliating air sub-unit.

Contents of the invention

The first aspect of the present invention provides an air separator for separating tobacco leaves, tobacco stems, and stalked leaves, which includes an air separation bin 10 arranged obliquely. The air separation bin 10 is provided with an upstream section, a midstream section, and a downstream section, wherein The section has the largest cross-sectional area, and the upstream section of the air distribution warehouse 10 is provided with a feed air duct 2 and a main air intake duct 4, and the feed air duct 2 is provided with a feed inlet 1, and the discharge port end of the feed air duct 2 is provided with a There is a feeding air pipe adjustment device 3, the upstream section of the air distribution warehouse 10 is provided with a downward first outlet 6, the midstream section is provided with a downward second outlet 7, and the downstream section is provided with a third outlet 8, and the third outlet 8 There is a negative pressure fan.

In a preferred embodiment of the present invention, an air equalizing device 5 is also included, and the air equalizing device 5 is located at the outlet of the main air inlet pipe 4 .

In a preferred embodiment of the present invention, the overall inclination angle of the wind distribution bin 10 relative to the vertical direction is 20-50°.

In a preferred embodiment of the present invention, the wind speed in the feeding air pipe 2 is >9m/s.

In a preferred embodiment of the present invention, the right side plate 9 of the first outlet 6 is a movable side plate, and its movable angle relative to the vertical direction is 0-30°.

In a preferred embodiment of the present invention, the left side plate 11 of the second outlet 7 is a movable side plate, and its movable angle relative to the vertical direction is 5-30°.

In a preferred embodiment of the present invention, the included angle between the feeding air duct adjustment device 3 and the horizontal plane is ±10°, and the feeding air duct adjustment device 3 can adjust the throwing angle according to demand at any time.

In a preferred embodiment of the present invention, the first outlet 6 and the second outlet 7 are provided with air locks for separating materials, and the third outlet 8 adopts a circulating mesh belt to separate materials, and the airflow is guided by a negative pressure fan to discharge, so as to avoid A positive pressure wind field is formed at the first outlet 6 and the second outlet 7 .

In a preferred embodiment of the present invention, the wind speed of the three air distribution areas in the wind distribution chamber 10 can be set according to the suspension speed of the tobacco leaves and tobacco stems, and the wind speed is preferably set at 2-5 m/s.

In a preferred embodiment of the present invention, the cross-sectional area of the middle part of the wind distribution chamber 10 is obviously larger than other wind distribution regions, and the wind speed in this region is slower under the same air volume, and the gravity of the stalked blade is greater than the upward buoyancy of the wind field so that it falls into the outlet 7.

A second aspect of the present invention relates to a method of separating tobacco leaves, tobacco stems and stemmed leaves, comprising the steps of:

The mixture of tobacco leaves, tobacco stems and stalked blades is sent into the inlet 1 of the air separator according to claim 1, while the air is passed into from the main air inlet pipe 4 and the feeding air pipe 2, and the air velocity is adjusted so that: The tobacco stems entering the air distribution bin 10 are subjected to wind force less than their gravity and leave the first outlet 6 of the air distribution bin 10, while the tobacco leaves and stem blades are subjected to a wind force greater than their own gravity and continue to move upward along the wind distribution bin 10. Arriving at the middle of the air distribution bin 10, due to the increase in the cross-sectional area of the bin body, the wind speed drops, and the wind force on the stem blade is less than its own gravity and falls into the second outlet 7, and the tobacco leaves continue to move downstream of the air distribution bin 10. Finally, it leaves from the third outlet 8, thereby realizing the separation of tobacco leaves, tobacco stems and blades with stems.

Beneficial results of the present invention:

1. The present invention subdivides the mixed material after threshing into tobacco leaves, tobacco stems and stalked leaves, makes full use of the difference between the wind force in the air distribution bin and the gravity of the tobacco leaves, tobacco stalks and stalked leaves, and adjusts the wind speed so that The wind force on the tobacco stem is less than its own gravity, and it leaves from the first outlet of the upper part of the air distribution chamber. When the tobacco leaves and the stem blades pass through the middle of the air distribution chamber, the wind speed decreases due to the increase in the cross-sectional area of the air distribution chamber. The stem blade is subjected to wind force less than its own gravity and leaves from the second outlet in the middle part, and the tobacco leaves continue to move to the lower part of the air distribution bin, and finally leave from the third outlet.

2. The present invention subdivides the mixed material after threshing into tobacco stems, stemmed leaves and tobacco leaves, which improves the shortcomings of existing equipment that only separates light and heavy materials, and avoids the crushing caused by repeated processing of tobacco stems and increased load.

3. The present invention adopts the feeding mode of air belt material. Compared with conventional throwing rollers and high-speed belt feeding methods, air belt material feeding can make the material distribution per unit volume more dispersed and improve the efficiency of wind distribution.

4. The angle of the throwing end and the throwing speed of the equipment of the present invention can be adjusted quickly, which can meet the processing of tobacco leaves of different grades and parts.

5. The present invention effectively reduces the cross-sectional area of the air separation equipment, reduces the wind volume of wind separation, and has a remarkable energy-saving effect.

Description of drawings

Fig. 1 is a structural schematic diagram of an air separator for separating tobacco leaves, tobacco stems and stem blades according to the present invention.

Fig. 2 is a flow chart of the method for separating tobacco leaves, tobacco stems and stemmed leaves in the present invention.

The above drawings are only schematically illustrating the process of the present invention, and are not strictly drawn according to the actual scale.

The reference signs have the following meanings:

1-Material inlet; 2-Feeding air pipe; 3-Feeding air pipe adjustment device; 4-Main air inlet pipe; 5-Evening device; 6-First outlet; 7-Second outlet; 8-Third outlet ; 9-right panel; 10-air distribution warehouse; 11-left panel; 12-air distribution warehouse side board.

Detailed ways

The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings. The drawings are illustrative only and are not intended to limit the scope of the invention in any way.

The material processed by the leaf thresher is divided into tobacco leaves, tobacco stems and a mixture of stalked leaves. Into the air, the mixed material starts to accelerate in the feeding air pipe 2 under the action of wind force, and after the outlet of the feeding air pipe 2 is changed by the feeding air pipe adjustment device 3, it is thrown into the air distribution bin 10; adjust the air flow rate So that: in the lower part of the air distribution bin 10, the heavy tobacco stem part in the mixture moves forward for a certain distance under the action of inertia and falls into the first outlet 6 due to the gravity being greater than the upward lift force given by the wind field. The air lock is separated, and after being collected, it enters the re-baking process of tobacco stems. The wind force on the remaining mixture of tobacco leaves and stalked leaves is greater than its own gravity, and continues to move upward along the air separation bin; , due to the increase of the cross-sectional area of the bin body, under the condition of a fixed air volume, the wind speed in the middle of the air distribution bin 10 drops significantly, and the wind force on the stalked blade is not enough to make it overcome its own gravity and continue to move upward, starting to move downward to the right Make a parabolic motion, fall into the second outlet 7 and separate the air material through the air lock, and the blade with stem continues to enter the next stage of the leaf beating unit. The upper part moves, and when the tobacco leaves move to the third outlet 8, the material and air flow are separated by the circulating mesh belt, and the tobacco leaves flow to the converging conveyor belt to enter the redrying process, and finally realize the efficient separation of tobacco leaves, tobacco stems and stem leaves.

Claims (7)

1. An air separator for separating tobacco leaves, tobacco stems and stalked blades, characterized in that it comprises an air distribution bin (10) arranged obliquely, and the wind distribution bin (10) is provided with an upstream section, a midstream section and a downstream section. Section, wherein the cross-sectional area of the midstream section is the largest, and the upstream section of the air distribution bin (10) is provided with a feeding air duct (2) and a main air inlet duct (4), and the feeding air duct (2) is provided with a feed inlet (1), the outlet end of the feeding air pipe (2) is provided with a feeding air pipe adjusting device (3), the upstream section of the air distribution warehouse (10) is provided with a downward first outlet (6), and the middle section is provided with a downward first outlet (6). There is a second downward outlet (7), the downstream section is provided with a third outlet (8), and a negative pressure fan is provided at the third outlet (8). 2. The air separator according to claim 1, characterized in that, the overall inclination angle of the air separator chamber (10) relative to the vertical direction is 20-50°. 3. The wind separator according to claim 1, characterized in that the right side plate (9) of the first outlet (6) is a movable side plate, and its movable angle relative to the vertical direction is 0-30° . 4. The wind separator according to claim 1, characterized in that, the left side plate (11) of the second outlet (7) is a movable side plate, and its movable angle relative to the vertical direction is 5-30° . 5. The air separator according to claim 1, characterized in that, the angle between the feeding air duct adjustment device (3) and the horizontal plane is ±10°. 6. A method for separating tobacco leaves, tobacco stems and stalked blades, characterized in that it comprises the following steps: The mixture of tobacco leaves, tobacco stems and stalked blades is sent into the feed inlet (1) of the air separator according to claim 1, and the air is passed into from the main air inlet pipe (4) and the feeding air pipe (2) simultaneously, Regulate the air flow rate so that: the tobacco stems entering the air distribution bin (10) are subjected to a windward force less than its gravity and leave from the first outlet (6) of the air distribution bin (10), while the tobacco leaves and stalked blades are subjected to a wind force greater than Its own gravity continues to move upwards along the air distribution chamber (10) to reach the middle of the air distribution chamber (10). Due to the increase in the cross-sectional area of the chamber body, the wind speed decreases, and the wind force on the stalked blade is less than its own gravity and falls into the air. At the second outlet (7), the tobacco leaves continue to move downstream of the air distribution bin (10), and finally leave from the third outlet (8), thereby realizing the separation of tobacco leaves, tobacco stems and stalked blades. 7. The method according to claim 6, characterized in that, the wind speed in the feeding air pipe (2) is >9m/s.