CN102948923B - Separation and recovery device for dottle and tobacco fiber - Google Patents

Abstract

The invention discloses a device for separating and recovering shredded tobacco and shredded fibers, which belongs to the technical field of cigarette mechanical equipment. The shredded tobacco purification device is formed by the upper and lower joints of the dust collection cover and the purification chamber; the purification chamber is a bucket-shaped cavity that is enlarged from the bottom to the top, and the dust collection The connecting hoses are connected; the air inlet surface of the purification chamber is set as an inclined plane, and the opposite side of the inclined plane is the upright side or the lower part is the upright side, and the upper part is slightly inclined; a feed vibration tank is arranged at the uppermost end of the inclined plane, and one level is arranged in turn below To the fourth-level air inlet, a fifth-level air inlet is set on the opposite side obliquely below the fourth-level air inlet, below the fifth-level air inlet is the main air inlet, and a shredded tobacco recovery box is arranged under the main air inlet. The invention has reasonable design, unique and novel structure, flexible and various operations, and can separate the fibrous flocs which are difficult to separate from the shredded tobacco, so that the shredded tobacco recovered can reach a relatively high purity.

Description

A kind of equipment for separating and recycling residual tobacco shreds and shredded fibers

technical field

The invention belongs to the technical field of cigarette machinery and equipment, and in particular relates to a device for separating and recycling shredded fibers in recovered shredded tobacco.

Background technique

In the prior art, there are always some unqualified cigarette products in the production of cigarette enterprises. These unqualified cigarettes are usually manually or mechanically removed from the cigarette paper and filters, and the cut tobacco is reserved as a recycling resource. But such shredded tobacco often can be mixed with a considerable amount of filamentous fibers, and it is a very difficult task to separate these fibrous filaments in the shredded tobacco from the shredded tobacco and to purify the shredded tobacco. For this reason, our company has done some work for this purpose, designed a separation device, and applied for an invention patent and a utility model patent, and the invention patent application number is "2010102352863". However, it is found that this device cannot meet the requirements in the actual application process. This is mainly due to the fact that the debris contained in the residual shredded tobacco of this enterprise is mainly fibrous flocs, which are difficult to separate; secondly, the cloth bags of the traditional bag filter are easily blocked, and once blocked, the wind speed and air volume of the device will be affected. distribution, therefore, the device cannot obtain the required accuracy of separation and recovery.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a kind of equipment for separating and recovering shredded tobacco and shredded fibers, so as to realize the sufficient stripping of shredded tobacco and fibers, solve the problem of winnowing accuracy, and make the separation and recovery of shredded tobacco through the equipment The shredded tobacco has reached the requirements required for production.

The technical solution of the present invention is: a shredded tobacco and shredded fiber separation and recovery equipment is composed of a shredded tobacco purification device and a self-excited water curtain dust removal system, and the shredded tobacco purification device consists of two cavities: a dust collection hood and a purification chamber It is formed by docking up and down; the purification chamber is a bucket-shaped cavity that is enlarged from the bottom to the top, and the dust collection cover is a cavity that is reduced from the bottom to the top, and its upper part is connected with the connecting hose; the purification The air inlet surface of the cavity is set as a slope, and the opposite side of the slope is the upright side or the lower part is the upright side, and the upper part is slightly inclined; a feeding vibrating groove is arranged at the uppermost end of the slope, and a first-level air inlet is arranged in turn below , a secondary air inlet, a tertiary air inlet, and a fourth-level air inlet, a fifth-level air inlet is arranged on the opposite side obliquely below the fourth-level air inlet, the main air inlet is below the fifth-level air inlet, and the main air inlet A shredded tobacco recovery box is arranged under the air inlet.

The inclination angle between the slope and the horizontal plane is 50° to 60°. The main air inlet is provided with or without a damper. The air inlets of the first-stage air inlet, the second-stage air inlet, the third-stage air inlet, the fourth-stage air inlet, the fifth-stage air inlet, and the main air inlet are fixed or adjustable. Above the outlets of the first-stage air inlet, second-stage air inlet, third-stage air inlet, fourth-stage air inlet and fifth-stage air inlet, arc-shaped throwing plates are fixedly connected to the purification chamber as a whole.

A central baffle may or may not be provided in front of the outlets of the primary air inlet, secondary air inlet, and tertiary air inlet. Conical baffles may or may not be provided above the outlets of the fourth-level air inlet and the fifth-level air inlet. The main air inlet is directly arranged in the cylindrical body below the fourth-stage air inlet, or arranged in front of the screen plate. A discharge air lock is set under the screen plate.

The invention has reasonable design, unique and novel structure, flexible and diverse operations, and can separate the fibrous flocs in the shredded tobacco which are difficult to separate from the shredded tobacco, so that the shredded tobacco recovered can reach a relatively high degree of purity and save renewable energy. resources, reducing the cost of the enterprise and improving the quality of the enterprise's products.

Description of drawings

Accompanying drawing 1 is a structural representation of an embodiment of the present invention;

Accompanying drawing 2 is a structural representation of another embodiment of the present invention;

Accompanying drawing 3 is a schematic diagram of the enlarged structure of the shredded tobacco purification device in accompanying drawing 1;

Accompanying drawing 4 is a schematic diagram of the enlarged structure of the shredded tobacco purification device in accompanying drawing 2;

Accompanying drawing 5 is the schematic diagram of simulation analysis of airflow distribution in the shredded tobacco purification device.

The marks in the accompanying drawings are described as follows: 1-the first air selection; 2-the second air selection; 3-the third air selection; 4-the fourth air selection; Inlet; 7-secondary air inlet; 8-tertiary air inlet; 9-fourth air inlet; 10-fifth air inlet; 11-purification and separation device; Vibration tank; 15-feed inlet; 16-connecting hose; 17-self-excited water curtain dust removal system; 18-incline; 19-main air inlet; 20-throwing plate; 21-cone baffle; Stencil; 23-air lock; 24-central baffle; 25-clean chamber; 26-dust cover.

Detailed ways

The specific implementation manners and related technical problems of the present invention will be further described in detail below in conjunction with the accompanying drawings. As shown in the embodiment of accompanying drawing 1 and accompanying drawing 2, the device for separating and recovering shredded tobacco and shredded fiber of the present invention consists of shredded tobacco purification and separation equipment 11 and a dust removal system. The dust removal system described here is a mature new product developed by the manufacturer based on its patent application. The commercially available product has been sold. Its patent number is "ZL200920047582.3" and the invention name is "an air purification device". Since the separation device 11 of the present application requires a relatively accurate wind speed at each air inlet point, a relatively stable air volume is required to be provided by the dust collector. Since the sundries to be removed by the present invention are mainly fibrous flying flocs, which have relatively strong adsorption, the cloth bag of the traditional bag filter is easily blocked, and the built-in blowing system has little effect. After the bag is blocked, the pressure loss will increase and the air volume provided will decrease, which will affect the winnowing effect. The dust removal system of the present invention selects the self-excited water curtain dust removal system 17 for use. The fibrous flakes selected by the shredded tobacco purification and separation device 11 enter the self-excited water curtain dust removal system 17 through the connecting hose 16. The fibers are insoluble in water and will float on the water surface. The water can be recycled after being filtered. , replaced regularly. The flocculated fiber will be easily filtered out through the filter screen, because the moisture will increase after the fiber passes through the water curtain to remove dust, and there will be no problem of raising again.

Purification and separation device 11 among accompanying drawing 1 and accompanying drawing 3 is an upright device, is all empty in its inner chamber and is not provided with various baffles etc., and purification and separation device 11 tops are dust collection cover 26, dust collection cover 26 The upper part is connected with the connecting hose 16 . The lower part of the purification and separation device 11 is a purification chamber 25. The purification chamber 25 is a similar bucket-shaped structure that gradually expands from bottom to top. It is the main area for winnowing in this equipment. About 57°, the lower part of the opposite side is an upright side, and the upper part is slightly inclined. A primary air inlet 6, a secondary air inlet 7, a tertiary air inlet 8, and a quaternary air inlet 9 are sequentially arranged on the slope 18, and a quintuple air inlet 10 is arranged on the opposite side wall obliquely below the quaternary air inlet 9. In the illustration, there is a curve along the inclined plane 18 with four marks indicating 1, 2, 3, and 4 in turn (there is also a 5 on the opposite side), which respectively represent the trajectory of the materials in each winnowing process. The dotted lines adjacent to each mark are shown as air inlets of various levels and main air inlets 19 . Directly connect shredded tobacco recovery box 12 under the main air inlet 19, the shredded tobacco collected here is pure shredded tobacco raw material that can be put into production again.

In accompanying drawing 2 and accompanying drawing 4, the slope 18 in the purification chamber 25 is about 57 °, and the side opposite to it is an upright side. In this example, the dust collection cover 26 is relatively long, and this is to allow the shredded tobacco to be fully separated from the shredded tobacco, so that the shredded tobacco will fall down, and the lighter shredded shredded tobacco will be sucked into the dust collection duct. In the purification chamber 25, a central baffle 24 is arranged in the center of the chamber facing the primary air inlet 6, the secondary air inlet 7 and the tertiary air inlet 8. The function of the central baffle 24 here is to prevent the shredded tobacco from being raised too much , directly into the dust hood. A conical baffle 21 is arranged above the quaternary air inlet 9 and the fifth air inlet 10. The function of the conical baffle 21 here is to prevent piles of shredded tobacco from falling directly from the purification chamber. This baffle acts as a disperser . In this example, the main air inlet 19 is arranged at the place facing the screen plate 22 , under this arrangement, an air lock 23 is arranged under the screen plate 22 , and the shredded tobacco recovery box 12 is arranged under the air lock 23 .

Accompanying drawing 5 is the schematic diagram of simulation analysis of airflow distribution in the shredded tobacco purification device. The applicant used the professional software in the prior art to simulate and analyze the airflow distribution of the shredded tobacco purification equipment, and then obtained the airflow simulation distribution diagram as shown in the figure.

Describe this purifying and separating device 11 below in conjunction with actual material operation again, this purifying and separating device 11 comprises five stages of winnowing (this description is template with accompanying drawing 1 and 3, please see accompanying drawing 1 and 3, the practical on inclined plane 18 The line is the running track of the simulated material, the dotted line and the arrow are the simulated wind direction), the material is fed by the vibrating tank 14, after the material enters the purification and separation device 11 from the feed port 15, a material throwing process is provided by the vibrating tank 14, and the vibrating tank 14 The primary air inlet 6 is arranged below, which provides a side air inlet to float the material and separate the shredded tobacco from the fiber. It can be seen from Figure 5 that the right side of the equipment forms a high wind speed channel. Because the specific gravity of the fiber is relatively light, the side wind floatation can blow the fiber to the high wind speed channel, and the dust removal wind will take it out of the purification box, while the shredded tobacco The specific gravity is relatively large, and it directly falls to carry out the next stage of winnowing; the shredded tobacco after the first grade of winnowing falls on the inclined plane 18 and the throwing plate 20 for the second grade of winnowing. The throwing plate 20 is located above the air inlet of the secondary air inlet 7. In fact, the throwing plate 20 does not move, it just accepts the material, and throws the material up under the action of the wind, which is carried out by the incoming side wind. Floatation, to further separate tobacco and fiber, the following stages of winnowing are carried out sequentially. The main air inlet 19, which is the main air inlet 19 at the lower end of the purification and separation device 11, provides vertical air for flotation, further separates the shredded tobacco and fiber shreds, and collects the fibers into the dust removal system through wind motion. Material has all removed sundries and silk fiber after five grades of winnowing, falls into shredded tobacco recovery box 12 and sends into production line and uses as raw material.

The present invention adopts a modular design. When the incoming shredded tobacco is qualified and there is no need to remove flocculent fibers, the blower can be turned off, and the material is no longer air-selected, and directly slides down from the vibrating groove through the inclined plane 18 into the shredded tobacco collection box 12.

Briefly describe the design basis of the present invention below. Because there is little difference in specific gravity between fiber and shredded tobacco in the material, and many fibers and shredded tobacco are implicated together, it is very difficult to achieve better precision in one winnowing. During winnowing, it must be ensured that the shredded tobacco is sufficiently loose, and the shredded tobacco and fibers must be fully peeled off. The present invention adopts a multi-stage winnowing method to disperse the materials by lateral wind, so as to realize sufficient stripping of shredded tobacco and fibers to solve the problem of wind. A question of precision.

A further description is given below through an experimental example. Know that by the simulation experiment to material, the effect is better when the paving thickness of material is below 6mm, and the width of shredded tobacco purification equipment designed in this embodiment is 500mm, and the width of feed vibration groove 14 is 450mm, and the bulk density of shredded tobacco is 110-120kg/ m ³ , the bulk density coefficient is 0.4-0.6, and the conveying speed of the vibrating tank 14 is calculated as 0.5m/s, and the material flow rate is 265kg/h when the equipment effect is good. If a larger flow rate needs to be handled, the width of the vibrating tank and shredded tobacco purification equipment needs to be increased.

It is found through experiments that the suspension speed of a single fiber is about 1m/s, while the suspension speed of shredded tobacco is 4-6m/s (depending on the composition of shredded tobacco, it is different). The width of each lateral air inlet of the device is adjustable, and the size of the main air inlet at the bottom is also adjustable. Now adjust each side air inlet to the maximum, the size of the side air inlet is 50×500mm, the wind speed is 3.5m/s; the bottom air inlet is also adjusted to the maximum, the size is 250×500mm, the wind speed is 1.5m/s, calculate Later, it was learned that the total air volume required was 2230m ³ /h. Considering a certain air leakage coefficient, the dust removal fan was selected as 4-72NO.3.2A (2.2KW, 2729m ³ /h, 1091Pa), and the pipeline was equipped with a damper 13 for One flap, the total air volume can be adjusted according to the site conditions.

When using this equipment, it is also necessary to consider the moisture content of the shredded tobacco. Since the greater the moisture, the greater the difficulty of separation, the relationship between the winnowing effect and the moisture content of the shredded tobacco has yet to be tested online.

Claims (9)

1. A kind of shredded tobacco and shredded fiber separation and recovery equipment, containing self-excited water curtain dedusting system, is characterized in that: described separation and recovery equipment is made up of shredded tobacco purification device (11) and self-excited water curtain dedusting system (17) ), the described shredded tobacco purification device (11) is formed by butting up and down of two cavities of the dust collection cover (26) and the purification chamber (25); the described purification chamber (25) is a similar Bucket-shaped cavity, the dust collection cover (26) is a cavity that is narrowed from bottom to top, and its upper part is connected with the connecting hose (16); the air inlet surface of the clean cavity (25) is set as an inclined plane (18), the opposite side of the inclined plane (18) is the upright side or the lower part is the upright side and the upper part is slightly inclined; the uppermost end of the inclined plane (18) is provided with a feeding vibrating groove (14), which is arranged successively below The first-level air inlet (6), the second-level air inlet (7), the third-level air inlet (8) and the fourth-level air inlet (9), and five levels are arranged on the opposite side obliquely below the fourth-level air inlet (9). The air inlet (10), the main air inlet (19) below the fifth-level air inlet (10), and the shredded tobacco recovery box (12) is arranged under the main air inlet (19). 2. A device for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the inclination angle between the slope (18) and the horizontal plane is 50° to 60°. 3. The equipment for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the main air inlet (19) is provided with or without a damper (13). 4. The equipment for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the first-stage air inlet (6), the second-stage air inlet (7), and the third-stage air inlet (8) , the air inlets of the fourth-level air inlet (9), the fifth-level air inlet (10), and the main air inlet (19) are fixed or adjustable. 5. The equipment for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the first-stage air inlet (6), the second-stage air inlet (7), and the third-stage air inlet (8) , above the outlets of the fourth-stage air inlet (9) and the fifth-stage air inlet (10), an arc-shaped throwing plate (20) fixedly connected with the purification chamber (25) as a whole is arranged. 6. A device for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the first-stage air inlet (6), the second-stage air inlet (7), and the third-stage air inlet (8) Central baffle (24) is set or not set in the front of the outlet. 7. The equipment for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the outlets of the four-stage air inlet (9) and the fifth-stage air inlet (10) are provided with or without cones shaped baffle (21). 8. A device for separating and recovering shredded tobacco and shredded fibers according to claim 1, characterized in that: the main air inlet (19) is directly arranged in the cylinder below the fourth-stage air inlet (9), Or be arranged before the net plate (22). 9. The equipment for separating and recovering shredded tobacco and shredded fibers according to claim 8, characterized in that: a discharge air lock (23) is set under the screen plate (22).