Device for recovering materials along wire feeder

Abstract

The utility model relates to the technical field of cigarette production, in particular to a device for recycling materials along a cut tobacco feeder. The device comprises an air conveying pipeline, a material distributing structure and a negative pressure fan which are sequentially communicated, and the air conveying pipeline is communicated with a cut tobacco suction pipe; the material distributing structure comprises a cyclone separator and a discharging bin; a feed port of the cyclone separator is communicated with the air conveying pipeline, an air outlet of the cyclone separator is communicated with the negative pressure fan, and a bottom discharge port of the cyclone separator is communicated with the unloading bin; the discharging bin comprises a bin body provided with an inlet and an outlet, a bearing plate arranged at the outlet and a driving part used for controlling the bearing plate to cover or open the outlet. And the outlet is suspended above a bin opening of a cut tobacco feeding bin of the cut tobacco feeder. According to the tobacco shred recycling device, the discharging bin is arranged at the discharging opening in the bottom of the cyclone separator, and the outlet of the discharging bin is formed above the bin opening of the tobacco shred feeding bin, so that the recycled tobacco shred can directly flow into the feeding bin, and the recycling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette production, in particular to a material recovery device along a tobacco feeder line. Background Art

[0002] In the tobacco industry, the use of pneumatic tobacco conveying systems is one of the primary methods for achieving automated tobacco supply to cigarette making machines. The tobacco feeder is a crucial component of this pneumatic tobacco conveying system. Its primary function is to evenly and stably feed finished tobacco into the cigarette making machine's suction duct, enabling automated quantitative feeding of the tobacco into the machine.

[0003] After the daily production of the cigarette-making machine is completed, the tobacco along the feeder line (primarily referring to the tobacco left inside the feeder and on the conveyor belt) is discharged through the cigarette-making machine's suction duct. The tobacco collected in the packaging workshop is then manually collected and transported back to the tobacco-making workshop, where it is manually blended according to process standards. This method of collecting the collected tobacco requires significant manual intervention, which is labor-intensive, increases the tobacco breakage rate, and carries the risk of contaminants entering the tobacco, potentially compromising tobacco quality. Therefore, automated collection of tobacco along the feeder line to reduce labor input and improve recycling efficiency and quality is a pressing issue in the tobacco industry.

[0004] The patent document with publication number CN218457260U discloses such a movable explosion-proof tobacco recovery device, including an explosion-proof tobacco recovery device that cooperates with a feeder to complete the work, and the explosion-proof tobacco recovery device includes: a moving device; an explosion-proof fan, the explosion-proof fan is arranged above the moving device; a material receiving box assembly, the material receiving box assembly is arranged on the moving device and is located on one side of the explosion-proof fan; a material distribution box, the material distribution box is arranged directly above the material receiving box assembly; a quick-connect hose, the quick-connect hose is connected and arranged on one side of the upper part of the material distribution box; a connecting pipe, the connecting pipe is connected and arranged between the explosion-proof fan and the material distribution box; an air outlet pipe, the air outlet pipe is connected to the air outlet of the explosion-proof fan; a dust container filter bag, the dust container filter bag is detachably connected to the air outlet pipe; wherein the quick-connect hose is connected to the material air conveying pipe of the feeder to complete the work.

[0005] In the prior art, tobacco shreds are recycled into empty cartons. When the empty cartons are full, the machine needs to be stopped and replaced with new empty cartons, resulting in a low recycling efficiency. Utility Model Content

[0006] The utility model aims to solve the above problems and provides a material recovery device along the wire feeding machine with high recovery efficiency.

[0007] The technical solution to the problem solved by the utility model is to provide a material recovery device along the line of a tobacco feeder, comprising an air conveying duct, a material dividing structure and a negative pressure fan which are connected in sequence, the air conveying duct is connected to a tobacco suction tube in the tobacco feeder for conveying tobacco to a cigarette making machine; the material dividing structure comprises a cyclone separator and a discharge bin; the feed port of the cyclone separator is connected to the air conveying duct, the air outlet is connected to the negative pressure fan, and the bottom discharge port is connected to the discharge bin; the discharge bin comprises a bin body with an inlet and an outlet, a receiving plate arranged at the outlet, and a driving member for controlling the receiving plate to cover or open the outlet; the inlet is connected to the bottom discharge port, and the outlet is suspended above the bin port of the tobacco feeding bin of the tobacco feeder.

[0008] As a preferred embodiment of the present invention, the receiving plate is installed in the warehouse body through a rotating shaft, and the driving member drives the rotating shaft to rotate.

[0009] As a preferred embodiment of the present invention, the driving member includes a cylinder and a swing connecting rod connecting the cylinder piston rod and the rotating shaft.

[0010] As a preferred embodiment of the present invention, the air delivery duct is connected to the wire suction tube through a Y-shaped tube, and the Y-shaped tube includes a main tube connected to the wire suction tube, a first branch tube and a second branch tube respectively connected to the main tube, the second branch tube is provided with a reversing valve and is connected to the air delivery duct, and the first branch tube is provided with a pneumatic butterfly valve and is connected to the cigarette making machine.

[0011] As a preferred embodiment of the present invention, a fluororubber strip is provided on the side end of the receiving plate, and the fluororubber strip abuts against the inner wall of the bin body.

[0012] As a preferred embodiment of the present invention, a sieve barrel is provided in the cyclone separator, the top of the sieve barrel is connected to the air outlet, the bottom is closed, and the side wall is provided with sieve holes for stopping tobacco from passing through.

[0013] As a preferred embodiment of the present invention, the receiving plate includes a magnetic attraction portion.

[0014] As a preferred embodiment of the present invention, a filter plate is provided on one side of the receiving plate for receiving the shredded tobacco, the filter plate comprises a plurality of through holes, and magnets are provided on the inner walls of the through holes to form the magnetic attraction portion.

[0015] As a preferred embodiment of the present invention, the surface of the filter plate includes a hollow portion where the through holes are provided, and a remaining solid portion, and the solid portion is provided with an anti-stick coating.

[0016] As a preferred embodiment of the present invention, adsorption cotton is filled between the filter plate and the receiving plate.

[0017] Beneficial effects of the utility model:

[0018] 1. In the present application, a discharge bin is provided at the bottom outlet of the cyclone separator, and the outlet of the discharge bin is provided above the bin opening of the tobacco feeding bin, so that the recovered tobacco can flow directly into the feeding bin. The recovery process is continuous and does not require shutdown, thereby improving the recovery efficiency.

[0019] 2. In some embodiments, the air delivery duct and the wire suction tube are connected through a Y-shaped tube, and a pneumatic butterfly valve and a reversing valve are used in conjunction with the use of the valve, so that the wire feeding machine can be switched between wire feeding operation and recovery operation by controlling the valve. There is no need to frequently disassemble and install the pipes between the wire feeding tube, the air delivery duct, and the cigarette making machine. The operation is simple and it is not easy to cause wear of the pipes.

[0020] 3. In some embodiments, a sieve barrel is provided in the cyclone separator and / or adsorption cotton is provided on the receiving plate, and a magnetic attraction portion is provided on the receiving plate to separate light dust and heavy metal impurities that may exist in the recovered tobacco, thereby improving the purity of the recovered tobacco. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the installation of a material recovery device along the wire feeder on the wire feeder;

[0022] Figure 2 It is a structural diagram of the material distribution structure of the material recovery device along the wire feeding machine;

[0023] Figure 3 It is a schematic diagram of the structure of the unloading bin of the material recovery device along the wire feeding machine;

[0024] Figure 4 This is a schematic diagram of the connection between the air delivery pipe and the wire suction pipe of the material recovery device along the wire feeding machine;

[0025] Figure 5 It is a structural schematic diagram of another embodiment of a cyclone separator in a material recovery device along a wire feeder;

[0026] Figure 6 It is a structural schematic diagram of another embodiment of a discharge bin in a material recovery device along a wire feeding machine;

[0027] In the figure: tobacco suction tube 11, tobacco feeding bin 12, air delivery duct 2, first branch pipe 211, pneumatic butterfly valve 211a, second branch pipe 212, reversing valve 212a, material distribution structure 3, cyclone separator 31, feed inlet 311, air outlet 312, bottom outlet 313, unloading bin 32, bin body 321, receiving plate 322, cylinder 323, swing connecting rod 324, filter plate 325, hollow part 325a, solid part 325b, adsorption cotton 326, negative pressure fan 4. DETAILED DESCRIPTION

[0028] The following are specific implementations of the present invention, and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0029] like Figure 1 As shown, when the tobacco feeder is in operation, tobacco cuts fall from the bottom outlet of the tobacco feed bin 12 onto the lifting belt, are then lifted by the lifting belt to the conveyor belt, are then conveyed by the conveyor belt to the tobacco feeder body, and finally are sent to the cigarette making machine for use by the tobacco suction pipe 11. The present application provides a material recovery device along the tobacco feeder line to recover tobacco cuts along this section of the line.

[0030] In this application, if Figure 1 As shown, the recovery device includes an air conveying pipe 2, a material separation structure 3 and a negative pressure fan 4 which are connected in sequence. The negative pressure fan 4 is mainly used to generate negative pressure wind to suck the tobacco in the lifting belt, the conveyor belt and the tobacco feeder into the air conveying pipe 2, and collect the solids after the solids and gas are separated by the material separation structure 3.

[0031] Among them, the air delivery duct 2 is connected to the wire suction tube 11 in the wire feeder for delivering the tobacco to the cigarette making machine, and the collection of tobacco materials along the line is completed through the wire suction tube 11 already provided by the wire feeder. In some embodiments, the air delivery duct 2 and the wire suction tube 11 can be connected in a manner as follows: the connection between the wire suction tube 11 and the cigarette making machine is removed, and then the air delivery duct 2 is connected to the end of the wire suction tube 11 originally used for connection with the cigarette making machine through a joint. Under this embodiment, the next time the wire feeding work is performed, the disassembly and installation must be repeated, which has the problem of complicated operation and frequent disassembly and installation of wear components. Therefore, in other embodiments, such as Figure 1 and Figure 4 As shown, the air delivery duct 2 is connected to the tobacco suction tube 11 via a Y-shaped tube. The Y-shaped tube includes a main tube connected to the tobacco suction tube 11, a first branch tube 211, and a second branch tube 212, each connected to the main tube. The second branch tube 212 is equipped with a reversing valve 212a and is connected to the air delivery duct 2. The first branch tube 211 is equipped with a pneumatic butterfly valve 211a and is connected to the cigarette making machine. When tobacco is required for feeding, the pneumatic butterfly valve 211a of the first branch tube 211 is opened, and the reversing valve 212a is controlled to close the passage from the second branch tube 212 to the air delivery duct 2, allowing the tobacco material to enter the cigarette making machine through the first branch tube 211 for use. When tobacco is required for recycling, the pneumatic butterfly valve 211a of the first branch tube 211 is closed, and the reversing valve 212a is controlled to open the passage from the second branch tube 212 to the air delivery duct 2, allowing the tobacco material to enter the air delivery duct 2 through the second branch tube 212 for recycling.

[0032] The material separation structure 3 is used to separate the tobacco material and the air flow, and send the separated tobacco material back to the tobacco feeding bin 12. Figure 1 and Figure 2As shown, the material separation structure 3 first includes a cyclone separator 31, which is consistent with the cyclone separator 31 in the prior art. It includes a cylindrical portion and a conical portion from top to bottom. The side wall of the cylindrical portion is provided with a tangential feed port 311, the top is provided with an air outlet 312, and the bottom of the conical portion is provided with a bottom outlet 313. The feed port 311 is connected to the air delivery duct 1, and the air outlet 312 is connected to the negative pressure blower 4. During use, the airflow containing the tobacco material along the line enters the cyclone separator 31 through the feed port 311. The airflow flows downward in a spiral along the inner wall of the cyclone separator. The dense tobacco material along the line is thrown toward the wall of the device under the action of centrifugal force, and falls along the wall of the device under the action of gravity and comes out from the bottom outlet 313. After the solids are removed, the airflow contracts in the device and flows toward the center, forming a secondary vortex upward and flowing through the air outlet 312 to the negative pressure blower 4.

[0033] In some embodiments, in order to reduce dust and impurities in the tobacco material along the line coming out from the bottom discharge port 313, as Figure 5 As shown, a sieve barrel 314 is provided within the cyclone separator 31. The top of the sieve barrel 314 is connected to the air outlet 312, the bottom is closed, and the sidewalls are provided with sieve holes to prevent tobacco from passing through. During use, due to centrifugal force, heavier tobacco is thrown outward, close to the inner wall of the cyclone separator 31, while lighter dust is attracted to the sieve barrel 314. Since the sieve barrel 314 is connected to the air outlet 312, the internal pressure of the sieve barrel 314 is low due to the action of the negative pressure blower 4. Therefore, dust passes through the sieve holes and enters the sieve barrel 314, where it is promptly and thoroughly separated from the tobacco. Furthermore, in some embodiments, a filter is provided between the air outlet 312 and the negative pressure blower 4 to remove dust.

[0034] like Figure 3 As shown, the material distribution structure 3 secondly includes a discharge bin 32, which includes a bin body 321 with an inlet and an outlet. The inlet is connected to the bottom outlet 313 of the cyclone separator 31 and is used to collect tobacco materials along the line. The outlet is suspended above the bin opening of the tobacco feed bin 12 of the tobacco feeder to return the tobacco materials along the line to the tobacco feed bin. The suspension method is not limited. A gantry bracket can be set near the tobacco feed bin 12 to fix the entire structure of the cyclone separator 31 and the discharge bin 32 on the horizontal frame of the gantry bracket. A receiving plate 322 is provided at the outlet, as well as a drive member for controlling the receiving plate 322 to cover or open the outlet. When the receiving plate 322 covers the outlet, it is used to receive tobacco materials along the line. When the receiving plate 322 opens the outlet, the tobacco materials along the line on the receiving plate 322 fall directly into the tobacco feed bin 12 for recycling.

[0035] The manner in which the driving member drives the receiving plate 322 to cover or open the outlet is not limited. In some embodiments, a socket may be provided on the side wall of the bin body 321. Inserting the receiving plate 322 into the bin body 321 through the socket may be considered as covering the outlet, and withdrawing the receiving plate 322 from the bin body 321 through the socket may be considered as opening the outlet. In other embodiments, such as Figure 3 As shown, the right end of the receiving plate 322 is installed in the warehouse body 321 through the rotating shaft, and the left end is a free end. The driving member drives the rotating shaft to rotate. The driving member can be a servo motor, and its output shaft is connected to the rotating shaft through a reduction structure. It can also be as shown in FIG. Figure 3 As shown, the driving element includes a cylinder 323 and a swing link 324 connecting the piston rod of cylinder 323 and the rotating shaft. The swing link 324 is L-shaped, with one end hinged to the piston rod of cylinder 323 and the other end connected to the rotating shaft. When cylinder 323 drives the piston rod to move horizontally, the end of the swing link 324 connected to it moves horizontally and rotates, thereby driving the other end to rotate, which in turn drives the rotating shaft and, in turn, the connecting plate 322. When the connecting plate 322 rotates until its free end abuts the inner wall of the bin body 321, the outlet is closed. When the connecting plate 322 rotates until a gap is created between its free end and the inner wall of the bin body 321, the outlet is opened.

[0036] Generally speaking, to ensure smooth rotation of the receiving plate 322, a certain gap is provided between the side end of the receiving plate 322 and the inner wall of the chamber 321 to prevent friction from impeding the rotation of the receiving plate 322. However, these gaps may cause unnecessary passage of tobacco or blockage. Therefore, in some embodiments, a fluororubber strip is provided on the side end of the receiving plate 322, which abuts against the inner wall of the chamber 321. The fluororubber strip can be specifically made of perfluoroether rubber or DuPont brand KALREZ, which is a flexible, low-surface-energy material. When closing the outlet, the fluororubber strip is squeezed between the chamber 321 and the receiving plate 322 due to its flexible properties, closing the gap. When rotating the receiving plate 322, its low-surface-energy properties do not affect the rotation.

[0037] The above-mentioned sieve barrel 314 in the cyclone separator 31 separates the lighter dust impurities, and there may be some heavier metal impurities in the tobacco material along the line, which enter the discharge bin 32 together with the tobacco. Therefore, in some embodiments, the receiving plate 322 includes a magnetic suction portion for adsorbing metal impurities. When the receiving plate 322 is rotated and tilted to open the outlet, the tobacco falls into the tobacco feeding bin 12 along the receiving plate 322, and the metal impurities remain on the receiving plate 322 for subsequent processing. On this basis, in order to avoid the adsorbed metal impurities causing the surface of the receiving plate 322 to be uneven, thereby affecting the sliding of the tobacco along the receiving plate 322. In some embodiments, such as Figure 6As shown, a filter plate 325 is provided on one side of the receiving plate 322 for receiving shredded tobacco. The filter plate 325 includes several through-holes, with magnets positioned on the inner walls of the through-holes to form magnetic attraction points. This attracts metallic impurities into the through-holes without affecting the smoothness of the filter plate 325's surface. Furthermore, the through-holes reduce the contact area between the tobacco and the filter plate 325, thus reducing tobacco adhesion to the filter plate 325. Furthermore, in some embodiments, the surface of the filter plate 325 includes a hollow portion 325a containing the through-holes and a remaining solid portion 325b. The solid portion 325b is coated with an anti-stick coating, such as polytetrafluoroethylene (PTFE), to further enhance the ability of the tobacco to slide off the receiving plate 322. Furthermore, absorbent cotton 326 can be placed between the filter plate 325 and the receiving plate 322 to absorb dust not completely removed by the filter barrel 314, or to remove dust by adsorption when the filter barrel 314 is not present.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A material recovery device along a wire feeding machine, comprising an air delivery pipe (2), a material distribution structure (3) and a negative pressure fan (4) connected in sequence, characterized in that: The air delivery duct (2) is connected to a tobacco suction pipe (11) in a tobacco feeder for delivering tobacco to a cigarette making machine; The material separation structure (3) includes a cyclone separator (31) and a discharge bin (32); The feed port (311) of the cyclone separator (31) is in communication with the air delivery duct (2), the air outlet (312) is in communication with the negative pressure blower (4), and the bottom discharge port (313) is in communication with the discharge bin (32); The unloading bin (32) comprises a bin body (321) provided with an inlet and an outlet, a receiving plate (322) arranged at the outlet, and a driving member for controlling the receiving plate (322) to cover or open the outlet; the inlet is communicated with the bottom discharge port (313), and the outlet is suspended above the bin opening of the tobacco feeding bin (12) of the feeder.

2. A material recovery device along the wire feeding machine according to claim 1, characterized in that: The receiving plate (322) is installed in the warehouse body (321) via a rotating shaft, and the driving member drives the rotating shaft to rotate.

3. The material recovery device along the wire feeding machine according to claim 2, characterized in that: The driving member comprises a cylinder (323), and a piston rod connecting the cylinder (323) and a swing connecting rod (324) of the rotating shaft.

4. The material recovery device along the wire feeding machine according to claim 1, characterized in that: The air delivery duct (2) is connected to the wire suction duct (11) via a Y-shaped tube, and the Y-shaped tube comprises a main tube connected to the wire suction duct (11), a first branch tube (211) and a second branch tube (212) respectively connected to the main tube, the second branch tube (212) being provided with a reversing valve (212a) and being connected to the air delivery duct (2), and the first branch tube (211) being provided with a pneumatic butterfly valve (211a) and being connected to the cigarette making machine.

5. The material recovery device along the wire feeding machine according to claim 1, characterized in that: A fluororubber strip is provided at the side end of the receiving plate (322), and the fluororubber strip abuts against the inner wall of the bin body (321).

6. The material recovery device along the wire feeding machine according to claim 1, characterized in that: A sieve barrel (314) is provided in the cyclone separator (31), the top of the sieve barrel (314) is connected to the air outlet (312), the bottom is closed, and the side wall is provided with sieve holes for preventing tobacco from passing through.

7. The material recovery device along the wire feeding machine according to claim 1, characterized in that: The receiving plate (322) includes a magnetic attraction portion.

8. The material recovery device along the wire feeding machine according to claim 7, characterized in that: A filter plate (325) is provided on one side of the receiving plate (322) for receiving shredded tobacco. The filter plate (325) comprises a plurality of through holes, and magnets are provided on the inner walls of the through holes to form the magnetic attraction portion.

9. The material recovery device along the wire feeding machine according to claim 8, characterized in that: The surface of the filter plate (325) comprises a hollow portion (325a) in which the through-hole is provided, and a remaining solid portion (325b), wherein the solid portion (325b) is provided with an anti-stick coating.

10. The material recovery device along the wire feeding machine according to claim 8, characterized in that: Adsorption cotton (326) is filled between the filter plate (325) and the receiving plate (322).

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