CN211756691U - Tobacco stalk screening equipment - Google Patents

Abstract

A tobacco stem screening device, comprising: a cylindrical screening drum located on the upper layer and a flat-plate-shaped screening vibrating screen located on the lower layer; the screening drum is inclined and arranged to connect the straightened tobacco stems at the front end, and the outer surface of the screening drum is evenly distributed with many a rectangular groove for accommodating tobacco stems, the long-side direction of which is consistent with the incoming material direction; the screening vibrating screen has a plurality of independent vibrating plates along the horizontal and transverse directions, and each has: A circular hole and a collection slope located at the baffle plate of the vibrating plate are screened in two stages, and are further divided into a plurality of independent screening plates on the second stage to effectively separate tobacco stems of different specifications. Provide raw materials with uniform quality for subsequent tobacco stem processing.

Description

A kind of tobacco stem screening equipment

technical field

The utility model belongs to the field of tobacco leaf redrying processing, in particular to a tobacco stem screening device.

Background technique

In the field of tobacco leaf redrying processing, especially in the sieving and classification of the tobacco stems after the leaf stems are separated according to the thickness of the tobacco stems, about 25% of the tobacco stems in the tobacco leaf raw materials have high cellulose content, and the expanded tobacco stems , used in cigarette products, as a component of the product, it can not only reduce the tar content, improve the state of smoke, but also reduce the cost of raw materials. In the process of tobacco stem processing, tobacco stem screening and impurity removal is an important process in the tobacco stem processing process. Screening out tobacco stems of suitable size (thickness, length) is the basis for the difficulty of processing in the subsequent process.

Most of the existing tobacco stem screening devices use a single-layer screen, and the screen has a structure with round holes or long holes. During use, the screening is incomplete, the screening efficiency is low, and it cannot be fully classified. It is easy to block and other problems, especially it is difficult to effectively screen the length of tobacco stems.

The existing equipment can straighten the feeding device of the tobacco stems, so that the tobacco stems are neatly arranged according to the length direction, and the uniform tobacco stems enter the shredder, and the tobacco stems are cut into shredded stems. However, this kind of device does not have the function of distinguishing thick and thin tobacco stems, resulting in unreasonable utilization of resources and uneven quality of cut stems when cutting cut stems.

Utility model content

The purpose of the utility model is a new type of tobacco stem screening equipment, which solves the problems of the prior art, can evenly and quickly screen common tobacco stems in actual production, improves production efficiency and quality, and effectively separates different specifications (thickness and thickness). , long and short) tobacco stems, providing raw materials with uniform quality for subsequent tobacco stem processing.

In order to achieve the above technical purpose, the present utility model provides a tobacco stem screening equipment, which comprises: a cylindrical screening drum located on the upper layer and a flat-plate screening vibrating screen located on the lower layer; Inclined arrangement, the front end is connected with a tobacco stem straightening device and receives the smoothed tobacco stems, the outer surface of the screening drum is evenly distributed with a plurality of rectangular grooves, the rectangular grooves accommodate the tobacco stems and all The long-side direction of the rectangular groove is consistent with the incoming direction of the tobacco stems; the screening vibrating screen has a plurality of independent vibrating plates along the horizontal transverse direction, and each of the vibrating plates has: A plurality of circular holes evenly distributed on the surface of the flat plate and a collection slope at the baffle of the vibrating plate.

The utility model undergoes two-stage screening, and is further divided into a plurality of independent screening plates on the second stage, the tobacco stems after the first-stage screening are subjected to different secondary screening, and the tobacco stems after the first-stage screening are screened separately. The tobacco stems can be processed for subsequent production or further reprocessing according to their specific sizes, effectively separating tobacco stems of different specifications and providing raw materials with uniform quality for subsequent tobacco stem processing.

As a further improvement, a collection belt is horizontally and laterally arranged on the lower layer of the screening vibrating screen.

As a further improvement, the inclination angle between the axis of the screening drum relative to the horizontal line is 3 to 6 degrees.

As a further improvement, a plurality of the rectangular grooves have a plurality of regions along the axis of the screening drum, and from the front end to the rear end of the screening drum, the openings of the rectangular grooves in the regions are The size gradually increases.

As a further improvement, the area has three, and the rectangular grooves correspond to and include: a first rectangular groove, a second rectangular groove and a third rectangular groove.

As a further improvement, the vibrating plate has three and corresponds to the area in the vertical direction, and the circular hole corresponds to the rectangular groove and includes: a first circular hole, a second circular hole and The third round hole.

As a further improvement, the diameters of the first circular hole, the second circular hole and the third circular hole are gradually increased.

As a further improvement, it also includes a brush in contact with the outer surface of the screening drum, the brush is arranged on the feed side of the screening drum and extends along the axis of the screening drum.

As a further improvement, the screening drum rotates counterclockwise in the direction of the front end surface thereof, and the brushes are arranged in the horizontal direction of the feeding side of the screening drum.

As a further improvement, the brushes are distributed in a straight line or in an arc in the direction of the end face of the screening drum.

The utility model is further straightened by brushes, and at the same time, each stage of screening has three different sizes and specifications, so that the tobacco stems can be finely screened, and the tobacco stems of different specifications can be collected independently for subsequent production and processing. use.

Description of drawings

Fig. 1 is the appearance schematic diagram of the utility model;

Fig. 2 is the axial schematic diagram of screening drum;

Figure 3 is a schematic diagram of the front end of the screening drum;

Figure 4 is a schematic diagram of a screening vibrating screen.

Reference numerals: screening drum 1, screening vibrating screen 2, collecting belt 3, collecting slope 4, brush 5.

Detailed ways

As shown in Figures 1 to 4, the direction of the straight arrow is the material transportation direction, and the circumferential direction is the rotation direction of the screening drum. The utility model provides a tobacco stem screening equipment, which comprises: a cylindrical screening drum 1 located on the upper layer and a flat-plate screening vibrating screen 2 located on the lower layer; the axis of the screening drum 1 is arranged inclined relative to the horizontal line, Its front end is connected with a tobacco stem straightening device and receives the straightened tobacco stems. The outer surface of the screening drum 1 is evenly distributed with a plurality of rectangular grooves, the rectangular grooves accommodate the tobacco stems and the rectangular The longitudinal direction of the groove is consistent with the incoming direction of the tobacco stems; the screening vibrating screen 2 has a plurality of independent vibrating plates along the horizontal transverse direction, and each of the vibrating plates has: A plurality of circular holes evenly distributed on the surface and a collection slope 4 located at the baffle of the vibrating plate.

The utility model undergoes two-stage screening, and is further divided into a plurality of independent screening plates on the second stage, the tobacco stems after the first-stage screening are subjected to different secondary screening, and the tobacco stems after the first-stage screening are screened separately. The tobacco stems can be processed for subsequent production or further reprocessing according to their specific sizes, effectively separating tobacco stems of different specifications and providing raw materials with uniform quality for subsequent tobacco stem processing.

As a further improvement, a collection belt 3 is horizontally and laterally arranged on the lower layer of the screening vibrating screen 2 .

As a further improvement, the inclination angle between the axis of the screening drum 1 relative to the horizontal line is 3 to 6 degrees. Preferred is 5 degrees.

As a further improvement, a plurality of the rectangular grooves have a plurality of regions along the axis of the screening drum 1, and from the front end of the screening drum 1 to the rear end, the rectangular grooves in the regions The opening size gradually increases. The tobacco stems collected from the tobacco stem straightening device from near to far are gradually thickened from thin to thin.

As a further improvement, the area has three, and the rectangular grooves correspond to and include: a first rectangular groove, a second rectangular groove and a third rectangular groove.

As a further improvement, the vibrating plate has three and corresponds to the area in the vertical direction, and the circular hole corresponds to the rectangular groove and includes: a first circular hole, a second circular hole and The third round hole.

As a further improvement, the diameters of the first circular hole, the second circular hole and the third circular hole are gradually increased. Correspondingly, the pore diameter of the distance from the tobacco stem straightening device increases gradually from near to far, and the tobacco stems collected from the upper layer from the near to far away from the tobacco stem straightening device gradually increase from thin to thick. Remove debris from tobacco stems of different specifications. The thicker tobacco stems are screened on a flat vibrating screen with larger round holes, which can more effectively screen out debris and broken tobacco stems. The screened tobacco stems are on the baffle. There is an oblique angle for the collection of stems; the lower layer is the collection belt for debris and broken stems.

As a further improvement, it also includes a brush 5 in contact with the outer surface of the screening drum 1, the brush 5 is arranged on the feeding side of the screening drum 1 and along the screening drum The axis of 1 extends.

As a further improvement, the screening drum 1 rotates counterclockwise in the direction of its front end surface, and the brush 5 is arranged in the horizontal direction of the feeding side of the screening drum 1 .

As a further improvement, the brushes 5 are distributed in a straight line or in an arc in the direction of the end face of the screening drum 1 .

The utility model is further straightened by brushes, and at the same time, each stage of screening has three different sizes and specifications, so that the tobacco stems can be finely screened, and the tobacco stems of different specifications can be collected independently for subsequent production and processing. use.

The utility model adopts a two-layer screening device. First, the tobacco stems with different thicknesses are screened out through a screening drum with grooves distributed; secondly, the middle-layer flat plate vibrating screen is used to accurately screen the sundries in the tobacco stems of different specifications. Improve the purity of tobacco stems and provide pure, uniform quality raw materials for subsequent stem processing. The classification and collection of normal tobacco stem discharge is located after the middle-layer flat plate vibrating screen. The discharge collection device includes separate collection devices for tobacco stems of different specifications, and the broken stem discharge collection device is located at the bottom layer.

The utility model is of great significance to the actual production. The tobacco stems collected during the normal redrying process are transported to the tobacco stem straightening device by the conveying belt, and the tobacco stems are arranged along the material flow direction. After the tobacco stems are straightened out, they pass through the tobacco stem screening device of different specifications, and are first transported to the screening drum with grooves by the conveyor belt. The stems are screened, and the tobacco stems fall on the three flat vibrating screens in the middle layer from fine to coarse. The tobacco stems falling on the middle plate vibrating screen will move on the plate vibrating screen with round holes under the vibration of the equipment, and the debris and broken stems smaller than the diameter of the round holes will fall to the lower layer when the equipment is vibrating. The qualified tobacco stems move forward in the vibration of the equipment, pass through the baffle, and collect at the normal tobacco stem classification collection. The shredded stems falling to the lower layer are collected or further processed by the conveyor belt.

The utility model is used in the process of threshing and redrying, the tobacco stems are sieved according to the specifications, and the broken stems can be screened out. Tobacco stems of different specifications are processed in groups, and different silk-making processes are used to process tobacco stems to improve the utilization rate of tobacco stems.

The utility model can be used for the processing technology of tobacco stems of "collection of threshed and re-cured tobacco stems---re-cured tobacco stems---packaging". The utility model is divided into two situations: (1) the utility model is placed before the tobacco stems are re-roasted, and the broken stems and debris are more effectively screened out, and the stems of different specifications are re-roasted and packaged respectively, which can reduce the The volatility of the moisture content of the tobacco stems; (2) the utility model is placed before the packaging, and the tobacco stems after the threshing and redrying enter the screening device, which can separate the broken stems produced in the redrying process together, so as to improve the quality of the tobacco stems. Terrier availability.

It should be understood that the scope of protection of the present invention is not limited to the non-limiting embodiments, and it should be understood that the non-limiting embodiments are only described as examples. The substantial protection scope required by this application is more reflected in the scope provided by the independent claims and its dependent claims.

Claims (10)

1. A tobacco stem screening apparatus, comprising: the cylindrical screening roller is positioned on the upper layer, and the flat screening vibrating screen is positioned on the lower layer; the tobacco stem sorting device is characterized in that the axis of the screening roller is obliquely arranged relative to the horizontal line, the front end of the screening roller is connected with a tobacco stem sorting device and receives sorted tobacco stems, a plurality of rectangular grooves are uniformly distributed on the outer surface of the screening roller, the tobacco stems are accommodated in the rectangular grooves, and the long side direction of each rectangular groove is consistent with the incoming material direction of the tobacco stems; the screening sieve that shakes has a plurality of independent vibration flat boards along horizontal, and every the vibration flat board all has: a plurality of evenly distributed round holes on the surface of the vibration flat plate and a collection inclined plane at the baffle of the vibration flat plate.

2. The tobacco stem screening apparatus according to claim 1, wherein: and a collecting belt is horizontally and transversely arranged on the lower layer of the screening vibrating screen.

3. The tobacco stem screening apparatus according to claim 1, wherein: the axis of the screening drum is inclined at an angle of 3 to 6 degrees relative to the horizontal.

4. The tobacco stem screening apparatus according to claim 1, wherein: the plurality of rectangular grooves have a plurality of regions along the axis of the screening drum, and the opening sizes of the rectangular grooves in the regions are gradually increased from the front end to the rear end of the screening drum.

5. The tobacco stem screening apparatus according to claim 4, wherein: the area has three, just the rectangle recess corresponds respectively and includes: the first rectangular groove, the second rectangular groove and the third rectangular groove.

6. The tobacco stem screening apparatus according to claim 5, wherein: the vibrating plate is provided with three vibrating plates and corresponds to the area in the vertical direction, and the round holes correspond to the rectangular grooves and comprise: a first circular aperture, a second circular aperture, and a third circular aperture.

7. The tobacco stem screening apparatus according to claim 6, wherein: the diameters of the first, second, and third round holes gradually increase.

8. The tobacco stem screening apparatus according to claim 1, wherein: the screening device further comprises a brush which is in abutting contact with the outer surface of the screening roller, and the brush is arranged on the feeding side of the screening roller and extends along the axis of the screening roller.

9. The tobacco stem screening apparatus according to claim 8, wherein: the screening roller rotates anticlockwise on the front end face direction of the screening roller, and the hairbrush is arranged in the horizontal direction of the feeding side of the screening roller.

10. The tobacco stem screening apparatus according to claim 8, wherein: the brushes are distributed in a linear type or arc shape in the end face direction of the screening roller.

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