Wind field compensation device of wind separator for tobacco redrying and leaf-stem separation

Abstract

The utility model discloses a wind field compensation device of a wind separator for tobacco redrying and leaf-stem separation. The wind field compensation device comprises a first unit to an Nth unit, the discharging end of the middle bin body of the ith unit is connected with the feeding end of the middle bin body of the (i + 1) th unit through a high-speed belt; any unit comprises a feeding end air guide plate and a discharging end air supplement pipe; the top of the feeding end air guide plate is arranged at a gap between the mesh belt system speed reducer and the high-speed belt at the feeding end of the middle bin body and is perpendicular to the surface of the gap, the angle of the feeding end air guide plate is adjustable, and the bottom of the feeding end air guide plate is connected with the side wall of the air inlet pipe; one end of the discharge end air supplement pipe is communicated with the air return pipeline of the air separator, and the other end of the discharge end air supplement pipe is communicated with the side wall above the discharge end of the middle bin body. An air inlet pipeline is led out of an air adjusting mechanism of the air separator, an air guide plate is additionally arranged, and part of air flow is separated out and directly enters the middle bin body from the feeding end to conduct air field compensation on a windless area. An air inlet pipeline is led out from the air return pipe, and part of airflow is separated out and directly enters the middle bin body from the discharging end to conduct air field compensation on a windless area.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco leaf redrying, and in particular to a wind field compensation device of an air separator for separating leaf stems from tobacco leaf redrying. Background Art

[0002] In the tobacco redrying process, the leaf threshing and air separation equipment is an important component to achieve leaf stem separation. Among them, the air separator uses wind flotation to separate materials of different specific gravities, and uses the suspension force in the wind field under certain conditions to separate the free leaves from the mixed materials after threshing (leaves, tobacco stems, and untorn tobacco leaves) according to the difference in material suspension force. The mixed materials after air separation are directly transported to the next level of air separation through a mesh belt.

[0003] When the leaf and stem mixture is thrown into the middle bin by a high-speed belt, since the blades at the feed end are in a lower position and the blades at the discharge end are a certain distance away from the air outlet, when the wind field is small, some blades are difficult to be blown into the discharge hood for separation, which affects the wind separation effect of leaves and stems and easily causes blockage of the air separator.

[0004] The overall structure of the equipment used in the existing tobacco redrying process is relatively large, and the existing wind compensation devices, such as the online tobacco stem waste destruction system disclosed in CN201320846247.6, cannot achieve effective supplementation of wind in the above-mentioned area without affecting the airflow requirements of other sections of the tobacco redrying equipment.

[0005] The information disclosed in the background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in the field. Utility Model Content

[0006] In response to the above-mentioned technical problems, the present application provides a wind field compensation device for an air separator used for separating leaf stems in tobacco redrying. The device can be improved on the basis of existing redrying equipment, and blade air separation can be achieved at the feed end and the discharge end without affecting the wind power requirements of other work sections, thereby improving the air separation effect of the air separator and solving the problem of air separator blockage.

[0007] The present application provides a wind field compensation device for a wind separator for separating tobacco leaf stems during redrying, comprising: a first unit to an Nth unit; the discharge end of the middle bin of the i-th unit is connected to the feed end of the middle bin of the i+1th unit through a high-speed belt;

[0008] Any unit includes: an air guide plate at the feed end and an air supply duct at the discharge end; the top of the air guide plate at the feed end is arranged at the gap between the mesh belt system reducer and the high-speed belt at the feed end of the middle silo body, and is arranged vertically at the gap surface, and the angle is adjustable; the bottom of the air guide plate at the feed end is connected to the side wall of the air inlet duct; one end of the air supply duct at the discharge end is connected to the return air duct of the air separator, and the other end is connected to the side wall above the discharge end of the middle silo body.

[0009] Preferably, it comprises: an air duct air regulating mechanism; the air duct air regulating mechanism is accommodated and arranged at the connection between the air guide plate at the feed end and the air inlet duct.

[0010] Preferably, the air supply duct at the discharge end is arranged on the outer side wall of the middle bin body.

[0011] Preferably, one end of the high-speed belt is arranged on the feeding end of the middle bin body.

[0012] Preferably, the air outlet end of the air inlet pipe of any unit is connected to the dropper at the top of the middle warehouse body.

[0013] Preferably, an air separator air inlet pipe is provided on the air inlet pipe.

[0014] Preferably, the air outlet end of the discharge end air supply duct is a variable diameter air duct.

[0015] Preferably, the angle between the outlet end of the air supply duct at the outlet end and the side wall of the outlet end of the middle bin body is 8 to 12 degrees.

[0016] The beneficial effects of this application include:

[0017] 1) The wind field compensation device for the air separator for separating tobacco leaf stems during redrying provided in the present application is provided with a feed end air guide plate installed in the air inlet duct, and a pipe system is led out from the return air duct, so that part of the air flow is directly entered into the middle bin body from the feed end and the discharge end, so as to compensate the wind field in the windless area.

[0018] 2) The wind field compensation device for separating tobacco leaf stems from redrying provided in the present application can achieve wind force compensation at the feed end and the discharge end of the central bin by dividing the airflow in the air duct on the basis of the existing redrying equipment without affecting the existing wind force in the original area, thereby improving the effective separation of tobacco leaves and stems and avoiding tobacco leaf blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a wind field compensation device for a wind separator for separating tobacco leaf stems from redried tobacco leaves in at least one embodiment provided in the present application;

[0020] Legend:

[0021] The feed end air guide plate 1, the high-speed belt 2, the middle bin body 3, the air duct air regulating mechanism 11, the air inlet duct 31, the discharge end air supply duct 112, and the return air duct 12. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0024] The technical means that are not described in detail in this application and are not used to solve the technical problems of this application are all set according to the common knowledge in the field, and can be implemented in a variety of common knowledge settings.

[0025] See also Figure 1 The wind field compensation device of the wind separator for separating tobacco leaf stems from redried tobacco leaves provided in the present application comprises: an air guide plate 1 at the feeding end and an air supply pipe 112 at the discharging end;

[0026] The air guide plate 1 at the feed end is a long strip of metal. The upper end of the air guide plate 1 at the feed end is vertically connected to the gap between the mesh belt system reducer and the high-speed belt 2 (the angle can be adjusted according to the actual situation of the wind field). The lower end of the air guide plate 1 at the feed end is connected to the side wall of the air inlet pipe 31 in a certain arc, and the connection end is provided with an air duct air regulating mechanism 11. The air guide plate 1 at the feed end divides the air path of the air inlet pipe 31 of the lower bin into two parts, and guides part of the air flow into the feed end of the middle bin body 3, so as to compensate for the wind field at the feed end of the middle bin body 3 and improve the wind force at the feed end.

[0027] The air supply duct 112 at the discharge end is an ordinary carbon steel pipe, which is distributed along the outer wall of the middle warehouse body 3. The upper end is connected to the return air duct 12 of the air separator. A variable diameter air duct is used to allow part of the air flow to enter the middle warehouse body 3 from above the discharge end of the middle warehouse body 3. The angle at which the air flow enters the middle warehouse body 3 is about 8 to 12 degrees. By setting the air supply duct 112 at the discharge end, the air flow in the return air inlet duct 12 of the air separator can be divided into two, and part of the air flow is introduced into the discharge end of the middle warehouse body 3. The wind field compensation is performed on the weak wind area and the windless area at the discharge end of the middle warehouse body 3, thereby increasing the wind force at the discharge end.

[0028] The supplementary principle of this device is to divide the circulating air path in the air duct of the air separator into three parts, compensate the wind field for the weak wind area and the windless area in the air separator, and realize the secondary throwing of the material entering the air separator, thereby improving the air separation efficiency. The material enters the high-speed belt 2 for transportation and is thrown upward into the middle bin 3 by the high-speed belt 2. Among them, after the lighter blades containing leaf stems enter the middle bin 3, they are pneumatically increased by the air flow divided by the air guide plate 1 at the feed end, and the height of the blades at the feed end is increased. The air flow passing through the steel mesh belt and moving upward is brought into the discharge hood, sucked into the outlet dropper connected to the discharge hood, and discharged from the air separator. The blades at the end of the parabola are thrown up for the second time under the action of the wind force of the air guide 112 at the discharge end, sucked into the dropper, and discharged from the air separator, thereby improving the air separation effect of the air separator and avoiding blockage of the air separator. Finally, the remaining material falls into the discharge port and is discharged into the next process.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind field compensation device for an air separator for separating tobacco leaf stems during redrying, characterized in that: include: Unit 1 to Unit N; The discharge end of the middle bin of the i-th unit is connected to the feed end of the middle bin of the i+1-th unit through a high-speed belt; Any unit includes: air guide plate at the feed end and air supply duct at the discharge end; The top of the air guide plate at the feed end is arranged at the gap between the mesh belt system reducer and the high-speed belt at the feed end of the middle silo body, and is arranged perpendicular to the gap surface, and the angle is adjustable; the bottom of the air guide plate at the feed end is connected to the side wall of the air inlet duct; one end of the air supply duct at the discharge end is connected to the return air duct of the air separator, and the other end is connected to the side wall above the discharge end of the middle silo body.

2. The wind field compensation device for the wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: include: The air duct air regulating mechanism is accommodated and arranged at the connection between the air guide plate at the feed end and the air inlet duct.

3. The wind field compensation device for the wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: The air supply duct at the discharge end is arranged on the outer side wall of the middle bin body.

4. The wind field compensation device for the wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: One end of the high-speed belt is arranged on the feeding end of the middle bin body.

5. The wind field compensation device for the wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: The air outlet end of the air inlet pipe of any unit is connected to the top of the middle warehouse body.

6. The wind field compensation device for the wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: An air separator air inlet duct is arranged on the air inlet duct.

7. The wind field compensation device for the wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: The air outlet end of the air supply duct at the discharge end is a variable diameter air duct.

8. The wind field compensation device for wind separator for separating tobacco leaf stems during redrying according to claim 1, characterized in that: The angle between the air outlet end of the air supply duct at the discharge end and the side wall of the discharge end of the middle bin body is 8 to 12 degrees.

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