CN110810891B - Sundry control method in tobacco redrying production process - Google Patents

Abstract

The invention discloses a method for controlling debris in a tobacco redrying production process, which is mainly realized from the following aspects: a. on a leaf-laying table, the hemp ropes on the original cigarette packages are unpacked and collected by adopting a "hemp rope one-knife cutter"method; b. tobacco leaves dropped on the leaf-laying table need to be collected and put into a centralized screening area for centralized selection, and the clean tobacco leaves are added to a collection belt after being checked and confirmed to be pure; c. wind selection and impurity removal adopts a dynamic and static combination selection mode; d. 20 groups of hemp silk removal dragging belts are added to the area with a large tobacco leaf conveying volume in the belt conveyor of the entire tobacco leaf redrying workshop, which are used to adhere hemp silk, hemp balls, hemp ropes and other debris attached to the tobacco leaves to Velcro, so as to remove the hemp ropes and hemp silk; three-dimensional impurity removal control is performed on 10 wind-selected discharging vibrating screens in the leaf-beating section; f. the suction port angles of various dust hoods in the workshop are adjusted, and the 90° angle is changed to 45° or 180°, so that the dust suction position is located at the parabolic dust concentration point of the material.

Description

A method for controlling debris in tobacco redrying production process

Technical Field

The invention relates to a method for controlling debris in the tobacco redrying production process, and belongs to the technical field of tobacco leaf redrying.

Background Art

The tobacco redrying factory is a factory that further processes the flue-cured tobacco after curing. Its purpose is to control the moisture in the tobacco leaves, kill insects and mold, and remove sand and debris that do not meet the requirements through secondary processing; at the same time, the processed tobacco leaves are further processed, such as matching reasonable formulas for various types of cigarettes. The existing operation process of this process is that the operator will move tobacco leaves from different regions and different weights according to the formula on the tobacco leaf matching belt. After the matching is completed, the tobacco leaf matching belt will send the tobacco leaves to the air delivery duct, and the tobacco leaves will be evenly mixed in the subsequent process; and the tobacco leaves sent to the tobacco leaf matching belt must be sorted and cleaned in advance.

At the same time, with the increasingly fierce competition in the tobacco industry, tobacco factories are gradually increasing their requirements for the quality of the tobacco leaves they purchase. In terms of the cleanliness of tobacco leaves, the requirements for the hemp fibers mixed in tobacco leaves were relatively low in the past, but in the past two years, requirements have been put forward for the mixing rate of hemp fibers in tobacco leaves. This requires tobacco redrying factories to strictly control all aspects of production to meet the control of the impurity rate in tobacco leaves.

Summary of the invention

In view of this, the purpose of the present invention is to provide a method for controlling impurities in the tobacco redrying production process, which can overcome the shortcomings of the prior art.

The objective of the present invention is achieved through the following technical solutions:

A method for controlling debris in the tobacco redrying production process is mainly achieved from the following aspects:

a. On the leaf-laying table, the hemp ropes on the original cigarette packages are opened and collected by "cutting the hemp ropes with one knife" to avoid a large number of short hemp ropes attached to the packages after multiple cuts, thereby reducing the secondary contamination of the tobacco leaves by hemp ropes or hemp silk;

b. The tobacco leaves that have fallen on the leaf-laying table need to be collected and put into the centralized screening area for centralized selection. After the selected tobacco leaves are checked and confirmed to be pure, they are put into the collection belt;

c. The tobacco leaves after wind selection and impurity removal are selected in a five-level selection mode combining dynamic and static selection; the five-level selection mode is dynamic first-level selection, dynamic second-level selection, dynamic third-level selection, static first-level selection and static second-level selection;

d. 20 sets of hemp-removing drag belts are installed in the belt conveyor of the tobacco redrying workshop where the tobacco conveying volume is large, which are used to stick the hemp, hemp balls, hemp ropes and other debris attached to the tobacco leaves to the Velcro to remove the hemp ropes and hemp fibers;

e. The 10 wind-selected discharging vibrating screens in the threshing section are used for three-dimensional impurity removal. The surface, bottom surface and vertical surface of the tobacco leaves transported by the vibrating screen are used for three-dimensional impurity removal. The hemp threads, hemp balls, hemp ropes and other debris attached to the tobacco leaves are adhered to the Velcro to remove the hemp threads and hemp threads;

f. Adjust the suction angle of each dust hood in the workshop, change the 90° angle to 45° or 180°, so that the suction position is located at the parabolic dust concentration point of the material.

The dynamic and static combined picking mode is that during the process of transporting tobacco leaves on the conveyor belt, debris is manually removed from the tobacco leaves during transportation to obtain dynamically cleaned tobacco leaves, and then the dynamically cleaned tobacco leaves are sent to a manual picking table for manual static picking and debris removal, and the tobacco leaves after manual static picking and debris removal are sent to a pneumatic conveying device for the leaf moistening process.

In the aforementioned method of controlling debris in the tobacco redrying production process, after the tobacco leaves are selected by the first static picking station and checked and confirmed by the management personnel, the tobacco leaves adjusted by the first static picking station are manually sent to the second static picking station, and the second static picking station is provided with an air suction port to air-send the tobacco leaves selected by the second static picking station to the leaf moistening process. While air-sending, the impurity rate of the statically selected tobacco leaves of the previous stage is also effectively monitored, and the qualified ones enter the next process, forming a three-level monitoring mode; if the debris data of the next process is abnormal, the previous stage is quantitatively assessed; after three-level control, the impurity rate in the finished product is significantly improved. The aforementioned method of controlling debris in the tobacco redrying production process is to reuse the long hemp rope collected in step a for packaging materials such as workshop solid waste and short stems.

The above-mentioned method for controlling debris in the tobacco redrying production process is that the area where tobacco leaves are stirred more during belt conveying refers to the conveyor belt with faster moving speed, the docking area of two belts and the transition area from one device to another.

The above-mentioned method for controlling debris in the tobacco redrying production process is that the hemp-removing towing belt used includes a gantry installed on the equipment, and one or more Velcro straps are installed on the crossbar of the gantry, and rake nails are provided at the tail of the Velcro strap.

The above-mentioned method for controlling debris in the tobacco redrying production process is that the Velcro tape with excessive length is wound around the crossbar of the gantry.

Compared with the prior art, in order to ensure that the content of impurities in the finished products (by-finished products) of the tobacco redrying plant is within a controllable range, the present invention adjusts all links in the production, removes impurities in the tobacco leaves from multiple angles and multiple links, and reduces the impurity rate of the tobacco leaves by 30%. In particular, the amount of hemp mixed in the tobacco leaves is effectively suppressed, so that the cleanliness of the tobacco leaves can be controlled at 3%, which is far lower than the industry standard. The effect is obvious after combined use.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which:

Fig. 1 is a schematic diagram of the structure of the hemp-removing towing belt used in the present invention.

Figure 2 is a diagram showing the effect of removing hemp using a hemp removal towing belt.

DETAILED DESCRIPTION

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

The method of controlling debris in the tobacco redrying production process is mainly achieved from the following aspects

a. On the leaf-laying table, the hemp ropes on the original cigarette packages are opened and collected by "one-knife cutter". Compared with the existing multiple-cut opening method, this method avoids a large number of short hemp ropes attached to the package after multiple cuts, thereby reducing the secondary pollution of hemp ropes or hemp fibers to tobacco leaves; the collected long hemp ropes are used for the packaging of workshop solid waste, short stems and other materials for secondary use.

b. The tobacco leaves that have fallen on the leaf-laying table need to be collected and put into the centralized screening area for centralized selection. After the selected tobacco leaves are checked and confirmed to be pure, they are put into the collection belt;

c. The wind selection and impurity removal adopts a dynamic and static combination selection mode. The dynamic and static combination selection mode is that during the process of conveying tobacco leaves on the conveyor belt, the impurities are manually removed from the tobacco leaves in the conveying process to obtain tobacco leaves after dynamic impurity removal. The tobacco leaves after dynamic impurity removal are then sent to a manual selection table for manual static selection and impurity removal. The tobacco leaves after manual static selection and impurity removal are sent to the wind conveying equipment and sent to the leaf beating process. The reason for the change is conventional. Originally, there was only one level of dynamic selection, which belonged to manual selection on the assembly line. The disadvantage of manual dynamic selection is that the tobacco leaves are directly sent by wind to the second beating collection belt and mixed into the main line after selection, so that the on-site selection quality and the impurity content of the tobacco leaves cannot be judged. The existing method is to manually remove impurities on a static workbench after selection on the assembly line, which is not affected by the assembly line and ensures the cleanliness of the selection and impurity removal.

d. 20 sets of hemp-thread removing dragging belts are installed in the areas where tobacco leaves are stirred more during belt conveying in the entire tobacco redrying workshop, which are used to stick hemp threads, hemp balls, hemp ropes and other debris attached to the tobacco leaves to the Velcro, so as to remove the hemp ropes and hemp threads; the areas where tobacco leaves are stirred more during belt conveying refer to conveyor belts with faster moving speeds, the docking areas of two belts and the transition areas from one equipment to another, and the hemp-thread removing dragging belts used include a gantry 1 installed on the equipment, and the equipment mostly refers to a conveyor belt 4, and more than one Velcro strap 2 is installed on the cross bar of the gantry 1, and a rake nail 3 is provided at the tail of the Velcro strap 2, and the Velcro strap 2 with excessive length is wound on the cross bar of the gantry 1.

e. The 10 wind-selected discharging vibrating screens in the threshing section are used for three-dimensional impurity removal control. The surface, bottom surface and vertical surface of the tobacco leaves transported by the vibrating screen are added with hemp-removing dragging belts to remove hemp fibers, hemp balls, hemp ropes and other debris attached to the tobacco leaves from the three-dimensional impurity removal process, so as to remove hemp threads and hemp fibers;

f. Adjust the suction angle of each dust hood in the workshop, change the 90° angle to 45° or 180°, so that the suction position is located at the parabolic dust concentration point of the material.

Claims (4)

1. A method for controlling foreign matter in a tobacco redrying production process, characterized in that it is mainly achieved through the following steps: a. On the leaf-laying table, the hemp ropes on the original cigarette packages are opened and collected by "cutting the hemp ropes with one knife" to avoid a large number of short hemp ropes attached to the packages after multiple cuts, thereby reducing the secondary contamination of tobacco leaves by hemp ropes and hemp fibers; b. The tobacco leaves that have fallen on the leaf-laying table need to be collected and put into the centralized screening area for centralized selection. After the selected tobacco leaves are checked and confirmed to be pure, they are put into the collection belt; c. The tobacco leaves after wind selection and impurity removal adopt a five-level selection mode combining dynamic and static. The five-level selection mode combining dynamic and static is dynamic primary selection, dynamic secondary selection, dynamic third-level selection, static primary selection and static secondary selection. The five-level selection mode combining dynamic and static is that during the process of conveying tobacco leaves on the conveyor belt, the impurities of the tobacco leaves in the conveying process are manually removed to obtain tobacco leaves after dynamic impurity removal, and then the tobacco leaves after dynamic impurity removal are sent to the manual selection table for manual static selection and impurity removal, and the tobacco leaves after manual static selection and impurity removal are sent to the wind conveying equipment for the leaf moistening process. After the tobacco leaves after static primary selection are checked and confirmed by the management personnel, the tobacco leaves after static primary selection are manually sent to static secondary selection. The selection table for static secondary selection is provided with a wind conveying suction port to convey the tobacco leaves after static secondary selection to the leaf moistening process. At the same time, the impurity rate of the static secondary selected tobacco leaves is effectively monitored. After passing the wind conveying, the impurity rate of the tobacco leaves is effectively monitored. After passing the wind conveying, the impurity data of the next process is abnormal, and the previous level is quantitatively evaluated. After the three-level control, the impurity rate in the finished product is significantly improved. d. 20 sets of hemp-removing dragging belts are installed in the belt conveyor of the whole tobacco redrying workshop in the area with a large tobacco leaf conveying volume, and are used to adhere the hemp silk, hemp balls and hemp ropes attached to the tobacco leaves to the Velcro belts, so as to remove the hemp silk, hemp balls and hemp ropes; the hemp-removing dragging belts used include a gantry (1) installed on the equipment, one or more Velcro belts (2) are installed on the crossbar of the gantry (1), and a rake nail (3) is provided at the tail of the Velcro belt (2); e. The discharging vibrating screen after air selection in the threshing section is controlled to remove impurities in three dimensions. The surface, bottom surface and vertical surface of the falling end of the tobacco leaves conveyed by the vibrating screen are cleaned in three dimensions. The hemp threads, hemp balls and hemp ropes attached to the tobacco leaves are adhered to the Velcro tape to remove the hemp threads, hemp balls and hemp ropes; f. Adjust the suction angle of each dust hood in the workshop, change the 90° angle to 45° or 180°, so that the suction position is located at the parabolic dust concentration point of the material. 2. The method for controlling debris in the tobacco redrying production process according to claim 1, characterized in that the long hemp rope collected in step a is used for packaging solid waste materials in the workshop for secondary use. 3. The method for controlling debris in the tobacco redrying production process according to claim 1 is characterized in that the area with a large tobacco leaf conveying volume in the belt conveyor refers to a conveyor belt with a faster moving speed, a docking area between two belts, and a transition area from one device to another. 4. The method for controlling debris in the tobacco redrying production process according to claim 1, characterized in that the Velcro tape (2) with excessive length is wound around the crossbar of the gantry (1).