CN221335419U - Online recovery system of dust removal waste material - Google Patents

Abstract

The utility model discloses an online recycling system and method for dust-removed waste, including a feed dust removal pipe, the lower end of which is connected to the waste outlet of a vibrating screener, a discharge pipe connected to the side wall of the feed dust removal pipe, the upper end of the discharge pipe is closed and the lower end has a discharge port, a horizontal rotating turntable screen is arranged on the horizontal cross section of the feed dust removal pipe and the discharge pipe, and sealing gaskets are arranged on the upper and lower contact parts of the feed dust removal pipe, the discharge pipe and the turntable screen respectively, and an available tobacco channel is arranged at the junction of the feed dust removal pipe and the discharge pipe on the lower side of the turntable screen, and the available tobacco channel is arranged between the sealing gasket and the turntable screen. The utility model only needs to be installed on the original dust removal pipe, does not destroy the structure of the original equipment, and can recycle the available tobacco after screening in real time online, with a recovery rate of up to 72.38%. It also has the characteristics of simple structure, small footprint, and flexible application scenarios.

Description

An online dust removal waste recycling system

Technical Field

The utility model relates to tobacco equipment, and more specifically, to an online dust removal waste recycling system and method.

Background technique

The problems currently faced by tobacco manufacturing companies are that on the one hand, tobacco leaf consumption is large and the cost accounts for a high proportion; on the other hand, a large amount of tobacco waste is generated during the production process, and its disposal must be destroyed in accordance with regulations. In 2021, a total of about 1,000 tons of dust removal waste was generated. The incineration cost was calculated at 280 yuan per ton, and the freight was calculated at 168.12 yuan/ton. Not only is the cost of processing tobacco waste too high, but the waste contains >35% of usable tobacco. From January to April 2022, the amount of dust removal waste per box was (2.58-3.26) kg/box. The large amount of waste caused excessive costs for the company, which also did not meet the requirements of green environmental protection.

The existing cigarette making process requires screening of tobacco and removal of tobacco dust to ensure the quality of rolling. The equipment usually used in this process is a vibrating screening device. The vibrating screener separates the waste in the tobacco material through its screening holes and then sucks it into the tobacco dust collector through the dust removal pipe for collection and scrapping. However, through testing, it was found that the scrapped tobacco waste contains a large amount of usable tobacco, which will cause waste if all of it is collected and scrapped. If the waste content is reduced only by reducing the aperture of the vibrating screener sieve plate, it is easy to have the problem that the sieve hole is too small and the small particle powder is not screened out. At the same time, the sieve hole is prone to clogging, and the existing recovery device generally uses a separate re-screening, which cannot meet the needs of online screening. Further research found that the tobacco industry does not have a unified definition of waste. According to the requirements of the "Cigarette Process Specifications", the tobacco dust particle size generated on the silk production line is less than 1mm, which is considered waste and needs to be dusted and pressed to facilitate transportation and storage and reduce air pollution. Screening tests of dust removal materials before pressing rods revealed that the proportion of tobacco dust with a particle size of >1 mm accounted for 35.94%, resulting in serious material waste. Most equipment manufacturers recommend multi-stage screening to reduce waste; however, the existing tobacco isolation and recovery device for the dust removal system of cigarette making machines (e.g. CN201320627281.4) is blocked due to problems such as insufficient wind power and poor sealing during operation due to large wind resistance, and its implementation effect is not ideal.

Utility Model Content

The utility model overcomes the shortcomings of the prior art and provides an implementation method of an online dust removal waste recycling system and method, in the hope of solving the problem that the existing equipment is not clean in screening and cannot achieve online screening.

In order to solve the above technical problems, an implementation method of the utility model adopts the following technical solutions:

A dust removal waste online recycling system comprises a feed dust removal pipe, the upper end of the feed dust removal pipe is connected with a negative pressure dust removal device, the lower end is connected with the waste outlet of a vibrating screener, a discharge pipe is also fixed on the side wall of the feed dust removal pipe, the upper end of the discharge pipe is closed and the lower end has a discharge port, a turntable screen is horizontally rotatably arranged on the horizontal cross-section of the feed dust removal pipe and the discharge pipe, the turntable screen is connected with a driving device, sealing gaskets are respectively arranged at the upper and lower contact parts of the feed dust removal pipe, the discharge pipe and the turntable screen, and a usable tobacco channel with an adjustable gap is provided at the sealing gasket at the contact part of the feed dust removal pipe and the discharge pipe on the lower surface of the turntable screen, and the usable tobacco channel is arranged between the sealing gasket and the turntable screen.

Optional; the stainless steel woven mesh on the turntable screen is 18 mesh.

Optional: The turntable screen can be installed with a stainless steel frame according to size, sealing, cleaning and other requirements.

Optional; the height of the available tobacco channel is adjustable 5-8mm.

Optionally, a self-cleaning brush is also provided on one side of the discharge pipe at the lower end of the turntable screen, and the brush is arranged at the end where the turntable screen and the discharge pipe rotate relative to each other, and the bristles of the brush are in contact with the lower part of the turntable screen.

Optionally, the turntable screen is arranged in the separation bin, the feed dust removal pipe, the discharge pipe and the upper and lower contact parts of the turntable screen are also arranged in the separation bin, and the discharge port of the discharge pipe is arranged at the lower end outlet of the separation bin.

Optional; the driving device includes a transmission shaft installed on the top of the separation bin, the lower end of the transmission shaft extends into the separation bin and is fixedly connected to the turntable screen, a reduction motor is provided on one side of the silo, and the output end of the reduction motor has a gear, which is connected to the gear on the transmission shaft through a chain, and the silo is fixedly mounted on the frame.

Optional; the feed dust removal pipe and the discharge pipe are hollow square tubes or polygonal tubes.

A method for online recycling of dust removal waste, using the above-mentioned online recycling system for dust removal waste, comprises the following steps:

(1) starting the negative pressure dust removal equipment; starting the waste online recovery system provided on the pipeline of the negative pressure dust removal equipment; and then starting the vibrating screener;

(2) The waste screened by the vibrating screener is adsorbed to the waste online recycling system through the feed dust removal pipe of the waste online recycling system by negative pressure;

(3) The online waste recovery system uses the negative pressure of the negative pressure dust removal equipment to separate and recover the usable tobacco particles with a particle size of >0.7 mm in the waste, and filters and discharges the waste particles with a particle size of <0.7 mm to the subsequent process.

Optional; in step (3), the aperture of the turntable sieve is 18 mesh, the rotation speed is 46-90 rpm, and the dust removal wind speed of the negative pressure dust removal equipment is 10-16.2 m/s.

Optional; step (3) the rotation speed of the turntable screen is 46 rpm, and the dust removal wind speed of the negative pressure dust removal equipment is 16 m/s.

Compared with the prior art, the utility model has at least the following beneficial effects: the utility model only needs to be installed in the middle of the original feed dust removal pipeline, does not destroy the structure of the original equipment, does not interfere with the operation of other equipment on the production line, and does not cause the risk of shutdown and material shortage during the production process. While realizing the real-time online recovery of the available tobacco after screening, it is evenly blended online back to the production line, with a recovery rate of up to 72.38%. It has the advantages of small footprint, simple structure, good use effect, and high economic value; the turntable screen is a stainless steel woven mesh, which is easy to install; its aperture and turntable screen speed can be designed as needed. The utility model is designed by combining the three parameters of the turntable screen aperture, speed and wind speed, which can be used to screen available tobacco in different states, save resources and reduce waste.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

Fig. 2 is an internal perspective view of the utility model;

Figure 3 is a schematic diagram of the installation of the turntable screen of the utility model;

Figure 4 is a schematic diagram of the installation of the sealing gasket of the utility model;

Figure 5 is a schematic diagram of the utility model in use;

Figure 6 is a flowchart of the use of the utility model;

The serial numbers in the figure are: 1. Feed dust removal pipe; 2. Feed port; 3. Waste outlet; 4. Vibrating screener; 5. Dust suction port; 6. Discharge pipe; 7. Discharge port; 8. Turntable screen; 9. Stainless steel woven mesh; 10. Sealing gasket; 11. Available tobacco channel; 12. Brush; 13. Separation bin; 14. Drive shaft; 15. Reducer motor; 16. Chain; 17. Frame; 18. Dust removal duct.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

Example 1

As shown in Figures 1-5: A dust removal waste online recycling system includes a feed dust removal pipe 1 connected to the waste outlet 3 on the vibrating screener 4 through a dust suction pipe 18. The feed dust removal pipe 1 is a hollow square pipe or a polygonal pipe. The lower end of the feed dust removal pipe 1 also has a feed port 2, which is sealed and connected to the waste outlet 3. The upper end of the feed dust removal pipe 1 has a dust suction port 5, and the dust suction port 5 is connected to a negative pressure dust removal device. The waste at the waste outlet 3 is sucked up by the negative pressure dust suction device. At the same time, the feed port 2 is connected to the dust suction pipe as a connecting port, and the other end of the dust suction pipe is sealed and connected to the vibrating screener 4. The upper waste outlet 3 ensures that the negative pressure of the feed dust removal pipe 1 does not leak; the side wall of the feed dust removal pipe 1 is also connected to a discharge pipe 6, which is a hollow square tube or polygonal tube with a closed upper end, and a discharge port 7 is provided at the lower end of the discharge pipe 6; a horizontally rotating turntable screen 8 is provided on the horizontal cross section of the feed dust removal pipe 1 and the discharge pipe 6, and the turntable screen 8 is a circular disc. The screen of the turntable screen 8 is a stainless steel woven mesh 9. The preferred specification of the stainless steel woven mesh 9 is 18 meshes. The turntable screen 8 is made of stainless steel as a whole, which is more conducive to subsequent cleaning. The turntable screen 8 is fixed to the drive shaft with a single bolt to facilitate subsequent disassembly and maintenance.

As shown in Figures 1 to 4: the upper and lower contact parts of the feed dust removal pipe 1, the discharge pipe 6 and the turntable screen 8 are respectively provided with sealing gaskets 10, the sealing gaskets 10 are fixedly connected to the feed dust removal pipe 1 and the discharge pipe 6, the upper and lower sealing gaskets 10 of the turntable screen 8 are in close contact with the upper and lower surfaces of the turntable screen 8, and on the lower surface of the turntable screen 8, there is an available tobacco channel 11 between the sealing gasket 10 at the connection between the feed dust removal pipe 1 and the discharge pipe 6 and the turntable screen 8. Preferably, the height of the available tobacco channel 11 is 5-8mm, which can be adjusted according to the height of the tobacco shreds adsorbed at the bottom of the turntable screen 8 in actual use. The height parameters of the available tobacco channel 11 can be flexibly adjusted according to the thickness of the available tobacco shreds to ensure that the available tobacco shreds adsorbed on the bottom of the turntable screen 8 can pass through. During the rotation of the turntable screen 8, the adsorbed available tobacco shreds pass through the available tobacco channel uninterruptedly, avoiding the pressure relief of the feed dust removal pipe 1 and the pressurization problem of the discharge pipe 6; a brush 12 is also provided on one side of the discharge pipe 6 at the lower end of the turntable screen 8, and the brush 12 is arranged at the end where the turntable screen 8 and the discharge pipe 6 rotate relative to each other. The bristles of the brush 12 are in contact with the lower part of the turntable screen 8, thereby realizing the self-cleaning function of the turntable screen 8 during operation.

As shown in Figure 5: the turntable screen 8 is arranged in the separation bin 13, the upper and lower contact parts of the feed dust removal pipe 1, the discharge pipe 6 and the turntable screen 8 are also arranged in the separation bin 13, and the discharge port 7 of the discharge pipe 6 is arranged at the lower end outlet of the separation bin 13, and the usable tobacco and other small amounts of splashing materials discharged from the discharge pipe 6 are concentrated through the separation bin 13. A transmission shaft 14 is also installed on the top of the separation bin 13, one end of the transmission shaft 14 extends into the separation bin 13 and is fixedly connected to the turntable screen 8, and the transmission shaft 14 and the turntable screen 8 are connected with a single bolt, and a reduction motor 15 is provided on the outside of the separation bin 13. The output end of the reduction motor 15 is equipped with a gear, and the gear is connected to the gear on the transmission shaft 14 through a chain 16; the bottom of the separation bin 13 is funnel-shaped, which is convenient for concentrating the usable tobacco in the separation bin 13; at the same time, the entire device is fixedly mounted on a frame 17, and the frame is at the upper end of the conveyor line of the vibrating screen 4.

When in use, the vibrating screener 4 performs the initial screening of the waste, and discharges the unqualified waste after screening to the waste outlet 3. At this time, the negative pressure dust suction device at the end of the dust suction port 5 is started, and the negative pressure sucks up the waste through the feed dust removal pipe 1. At the same time, the reduction motor 15 drives the turntable screen 8 to rotate through the chain 16. The turntable screen 8 rotates from the feed dust removal pipe 1 to the discharge pipe 6. When the waste is sucked up to the mesh surface of the turntable screen 8, the waste smaller than the aperture of the stainless steel woven mesh 9 passes through the mesh surface and is discharged through the feed dust removal pipe 1 to the subsequent rod pressing process; the negative pressure will The usable tobacco is adsorbed on the stainless steel woven mesh 9 at the bottom of the turntable screen 8, and rotates through the usable tobacco channel 11 to the discharge pipe 6 through the rotation of the turntable screen 8. There is no negative pressure in the discharge pipe 6. The usable tobacco adsorbed on the bottom of the turntable screen 8 falls freely in the discharge pipe 6 to the separation bin 13 to wait for recovery, or is directly discharged to the surface of the vibrating screen 4 to enter the next process; the brush 12 cleans the usable tobacco that adheres to the bottom of the turntable screen 8 and cannot fall off, so that the bottom of the turntable screen 8 remains clean and the screening effect is not affected by the mesh blockage of the turntable screen 8.

Example 2

The application method based on Example 1 comprises the following steps:

(1) Start the negative pressure dust removal equipment; start the waste online recovery system installed on the dust removal equipment pipeline; and then start the main line vibrating screener;

(2) The waste screened by the waste vibrating screener is sucked up to the waste online recycling system through the feed dust removal pipe of the waste online recycling system;

(3) The online waste recovery system uses the negative pressure of the negative pressure dust removal equipment to separate and recover the usable tobacco particles with a particle size of >0.7 mm in the waste, and discharge the waste particles with a particle size of <0.7 mm to the subsequent process.

The aperture of the terminal cigarette dust content tester is (0.63±0.06)mm. The silk-making process complies with the requirements of the Cigarette Process Specifications. The cigarette dust particles produced on the silk-making production line are considered waste if their diameter is less than 1mm.

Step (3) The sieve aperture of the waste online recovery system is based on the aperture of the cigarette dust content detection instrument (0.63±0.06) mm. Cigarette dust with a particle size of less than 0.7 mm is the real waste. Therefore, a 18-mesh stainless steel woven mesh is selected for the following offline test.

The test data of dust removal wind speed and rotary screen speed under 18 mesh aperture are as follows:

Through multiple tests at different rotation speeds, it was found that both too low and too high rotation speeds resulted in extremely unsatisfactory tobacco recovery effects. The best effect was achieved when the wind speed was around 16 m/s and the rotation speed was 46 rpm.

Four tests were conducted online on the rotary disc sieves with different apertures and rotation speeds. In the first test, the sieve size was 18 mesh, 46 revolutions/min, and the dust removal wind speed was 16m/s, and the recovery rate reached 72.38%;

Test sample (3.15～2)mm (2～1)mm (1～0.5)mm ＜0.5mm Before recycling 0.00% 39.06% 50.16% 10.77% After recycling 0.00% 76.08% 20.06% 3.86%

The second test used a 20-mesh sieve, 46 revolutions per minute, a dust removal wind speed of 16 m/s, and a recovery rate of 61.97%.

Test sample (3.15～2)mm (2～1)mm (1～0.5)mm ＜0.5mm Before recycling 0.00% 58.64% 32.18% 9.18% After recycling 0.00% 67.51% 27.39% 5.10%

Comparing the results of the two experiments, the effect (recovery rate) of the first experiment was significantly better than that of the second one, and the material structure changed more significantly before and after recovery, so the screen size was selected as 18 mesh. After fixing the screen size, the speed change experiment was carried out:

The third test used 18 mesh, 39 revolutions/min, 16 m/s dust removal wind speed, and a recovery rate of 63.89%.

Test sample (3.15～2)mm (2～1)mm (1～0.5)mm ＜0.5mm Before recycling 0.00% 40.44% 45.96% 13.60% After recycling 0.00% 58.31% 35.25% 6.44%

The fourth test used 18 mesh, 50 rpm, 16 m/s dust removal wind speed, and a recovery rate of 63.38%.

Test sample (3.15～2)mm (2～1)mm (1～0.5)mm ＜0.5mm Before recycling 0.00% 50.18% 39.93% 9.89% After recycling 0.00% 72.78% 23.94% 3.27%

Conclusion: On the basis of a speed of 46 rpm, the speed changes quickly. Whether it is speeding up or slowing down, the recovery rates of the two tests are not much different, and the proportion of usable tobacco before and after recovery is not superior to that of the first test. Therefore, the preferred curing parameters are that the sieve hole diameter of the turntable screen is 18 mesh, the speed is 46 rpm, the dust removal wind speed of the negative pressure dust removal equipment is 16 m/s, and the recovery rate reaches 72.38%.

Although the utility model is described herein with reference to the illustrative embodiments of the utility model, it should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in the present application. More specifically, within the scope disclosed in the present application, multiple variations and improvements can be made to the components and/or layout of the subject combination layout. In addition to the variations and improvements made to the components and/or layout, other uses will also be obvious to those skilled in the art.

Claims (6)

1. An on-line dust removal waste recycling system which is characterized in that: including feeding dust removal pipe (1), the upper end of feeding dust removal pipe (1) is connected with negative pressure dust collecting equipment, the lower extreme communicates with waste outlet (3) of vibration screening ware (4), still be fixed with discharging pipe (6) on the lateral wall of feeding dust removal pipe (1), discharging pipe (6) upper end closed lower extreme has discharge gate (7), horizontal rotation is provided with carousel sieve (8) on the horizontal cross section of feeding dust removal pipe (1), carousel sieve (8) connect drive arrangement, feeding dust removal pipe (1), upper and lower contact portion of discharging pipe (6) and carousel sieve (8) is provided with sealed pad (10) respectively, be equipped with available pipe tobacco passageway (11) in carousel sieve (8) lower surface, sealing pad (10) department that feeding dust removal pipe (1) and discharging pipe (6) contact portion, available pipe tobacco passageway (11) set up between sealed pad (10) and carousel sieve (8).

2. The dust removal waste on-line recycling system according to claim 1, wherein: the screen mesh of the rotary table screen (8) is a stainless steel woven mesh (9) with 18 meshes.

3. The dust removal waste on-line recycling system according to claim 1, wherein: a brush (12) is further arranged on one side of the discharging pipe (6) at the lower end of the rotary disc screen (8), the brush (12) is arranged at the tail end of the rotary disc screen (8) and the discharging pipe (6) which rotate relatively, and bristles of the brush (12) are contacted with the lower portion of the rotary disc screen (8).

4. The dust removal waste on-line recycling system according to claim 1, wherein: the rotary table screen (8) is arranged in the separation bin (13), the upper contact part and the lower contact part of the feeding dust removal pipe (1), the discharging pipe (6) and the rotary table screen (8) are also arranged in the separation bin (13), and the discharging port (7) of the discharging pipe (6) is arranged at the outlet of the lower end of the separation bin (13).

5. The on-line dust removal waste recycling system according to claim 4, wherein: the driving device comprises a transmission shaft (14) arranged at the top of the separation bin (13), one end of the transmission shaft (14) extends into the separation bin (13) and is fixedly connected with the rotary table screen (8), one side of the separation bin (13) is provided with a gear motor (15), the output end of the gear motor (15) is provided with a gear, the gear is connected with the gear on the transmission shaft (14) through a chain (16), and the separation bin (13) is fixedly arranged on the frame (17).

6. The dust removal waste on-line recycling system according to claim 1, wherein: the feeding dust removing pipe (1) and the discharging pipe (6) are hollow square pipes or polygonal pipes.