A photoelectric-wind separation and impurity removal integrated device based on a photoelectric impurity remover

Abstract

The present invention discloses an integrated photoelectric-wind impurity removal device based on a photoelectric impurity remover, comprising a conveying device (1), a photoelectric impurity remover (2), a wind impurity removal device (3), an unqualified material conveying device (4) and a qualified material conveying device (5); a conveying device (1) is provided at one end of the photoelectric impurity remover (2), and the conveying device (1) is connected to the feed port of the photoelectric impurity remover (2); a dust removal port is provided at the top of the other end of the photoelectric impurity remover (2), and a wind impurity removal device (3) is installed on the dust removal port, and the wind impurity removal device (3) is installed on a bracket (6). The present invention has a simple structure and a novel design, and can automatically remove non-tobacco foreign matter or defective products in tobacco materials at high speed and high precision for multiple times, further improving the removal efficiency of non-tobacco foreign matter or defective products, so that during the production process, the product quality problems caused by foreign matter are greatly reduced, effectively ensuring product quality, reducing production costs, and improving production efficiency.

Description

Technical Field

[0001] The invention relates to a device, in particular to an integrated photoelectric-wind separation and impurity removal device based on a photoelectric impurity remover, which is mainly used for removing foreign matter during tobacco leaf redrying and belongs to the technical field of tobacco leaf threshing and redrying. Background Art

[0002] Cigarettes are a special kind of food. Just like the manufacturing industries of medicines and other foods, the problem of impurities and foreign matter in the products has always existed and troubled us, and seriously affected the improvement of product quality. In the production process of cigarettes, impurities (especially non-metallic impurities, such as rubber, hair, packaging bags, etc.) will cause odor to the taste and taste of the final product, and some may even be fatal. As consumers' awareness of the Consumer Rights Protection Law increases, the requirements for product quality are becoming more and more stringent.

[0003] For redrying enterprises, the content of impurities in the redrying finished tobacco strips has always been a concern of industrial customers, and industrial customers have increasingly higher requirements for the control of impurities in the redrying finished tobacco strips. During the redrying process of tobacco leaves, some foreign matter with large volume or weight can be removed by manual selection, sand screening equipment and wind separation and impurity removal equipment, but some foreign matter with small volume, light weight and difficult to identify by naked eye needs to be removed by photoelectric impurity removal machine.

[0004] The photoelectric impurity remover is an integrated automated photoelectric detection system that combines optical, mechanical, electrical, pneumatic and computer technologies. It combines relevant technologies in the fields of optical mechanical electronics and aerodynamics, and is an indispensable equipment in the re-baking process.

[0005] In actual production, although the photoelectric impurity remover can effectively remove impurities, it is difficult for the photoelectric impurity remover to remove some small impurities with light weight or changeable shape (such as chicken feathers, hemp silk, plastic film, etc.). If such impurities are removed by air separation, better results can be achieved.

[0006] At present, the most commonly used equipment in the prior art is the wind selection impurity remover and the photoelectric impurity remover. Due to the small size and large number of hemp fibers, and its color is close to the color of tobacco leaves, it is difficult to remove them in large quantities manually. The hemp fiber removal rate is low by manual selection. The wind selection impurity remover is mainly composed of a discharge hood, a separation bin, a lower bin, a belt conveyor, etc., and a complete wind circulation system composed of a matching fan, a dropper, and a circulating air duct. Its equipment occupies a large space, has a complex structure, and has a high cost. It is a device that uses wind flotation to separate materials of different specific gravities, and is mainly used for the automatic separation of tobacco leaves and debris on the tobacco leaf beating line. Its principle is: the material enters the belt conveyor entrance, is thrown into the separation bin at an angle of 24° by the belt conveyor, and the debris with a specific gravity lighter than the tobacco leaves enters the upper part of the separation bin, and is brought into the discharge hood by the airflow that moves upward through the steel porous plate of the lower bin, sucked into the dropper connected to the discharge hood, and discharged from the wind selection impurity remover; normal materials fall at the discharge port of the lower bin of the wind selection impurity remover and enter the next process.

[0007] It is now commonly used to design and install needle roller and star roller nylon sticky cloth hemp removal devices on material belt conveyors. Although the impurity removal effect is remarkable, it is prone to material blockage during the production process, which has a great impact on the continuity of production and restricts the scope of use of hemp removal equipment. On the other hand, the nylon particles on the star roller nylon sticky cloth are prone to aging and falling off, causing them to mix into the tobacco material. Nylon belongs to a type of debris, which seriously affects the quality of silk tobacco.

[0008] The wind selection and impurity removal device is mainly equipped at the end of the manual selection table in the pre-treatment section. The wind selection process is to remove foreign objects from the tobacco leaves before the threshing and air separation, while the photoelectric impurity removal machine removes foreign objects from the tobacco leaves after the threshing and air separation. For foreign objects that cannot be removed by the photoelectric impurity removal machine, it is difficult to remove small foreign objects in the tobacco leaves using the original impurity removal method of the air separation impurity removal machine. Therefore, this device studies the integrated device of photoelectric air separation and impurity removal based on the electro-optical impurity removal technology, and it is necessary to make certain improvements to the wind selection and impurity removal method before it can be integrated with the photoelectric impurity removal machine.

[0009] The photoelectric impurity remover is a special optical, mechanical, electrical and pneumatic integrated equipment. It adopts the latest computer technology, real-time control technology, digital image processing technology, artificial intelligence technology and advanced mechanical structure technology. It is an efficient and reliable automated equipment used to remove various foreign objects that may be mixed in tobacco, which can effectively improve the quality of cigarette products and enhance the market competitiveness of products. Its working principle is that the material enters the high-speed belt of the photoelectric impurity remover through the star roller conveyor. Under the action of the auxiliary wind pressure system, the material runs along the conveyor belt at high speed toward the discharge port, and leaves the conveyor belt at the passive roller to fall horizontally in a parabolic shape. The moment the material leaves the conveyor belt, it is discovered and tracked by the optical and image acquisition system. The foreign objects are identified and located through the real-time image processing system and the rejection system, and the image data is processed through the DSP processing system. The color of the material is compared with the color of the tobacco leaves. According to the comparison results, the unqualified tobacco leaves and debris are rejected by compressed air and enter the material separation belt, and the qualified tobacco leaves enter the next level of equipment through the drop hopper. The industry stipulates that the comprehensive rejection rate is greater than or equal to 85%, and the tobacco leaf misrejection rate is less than or equal to ≤0.5%.

[0010] The current working process of the photoelectric impurity remover is that the mixture of tobacco and foreign matter slowly enters the system from the feed port. Under the action of the dispersion (star roller conveyor) and conveying (high belt conveyor) systems, the piled mixture of tobacco and foreign matter is evenly dispersed and thinned into a single layer. Under the action of auxiliary wind pressure, the material is thrown horizontally at a high speed of 5m / s along the high-speed conveyor belt. With the assistance of the lighting system and the optical preprocessing system, the image data information of the mixture is obtained by the data acquisition system. After processing by the real-time intelligent image processing system, the position information of the foreign matter in the mixture material flow is obtained, and the corresponding control instructions are issued to drive the air solenoid valve corresponding to the position of the foreign matter, and high-pressure air is ejected to remove the foreign matter and enter the separation hopper. Qualified tobacco leaves enter the next level equipment on the production line through the drop hopper.

[0011] In the above implementation process, since the area below the dust hood presents a certain negative pressure state, some small debris with light weight or changeable shape (such as chicken feathers, linen, plastic film, etc.) are easy to change their motion state due to their small inertia. In addition, the temperature inside the equipment is relatively high, and the small debris slowly floats up and finally gathers on the mesh plate on the dust hood. As the working time of the photoelectric debris remover increases, these debris gather to a certain amount and block the mesh plate on the dust hood, reducing the dust removal effect. In addition, small debris with light weight or changeable shape (such as chicken feathers, linen, plastic film, etc.) are adsorbed on the mesh plate and are not easy to remove, which ultimately affects the product quality.

[0012] Therefore, it is necessary to develop an integrated photoelectric-wind separation and impurity removal device based on a photoelectric impurity remover with high removal accuracy to solve the key to the above technical problems. Summary of the invention

[0013] In view of the many defects and shortcomings existing in the above-mentioned background technology, the present invention has made improvements and innovations thereto, and aims to provide a device that can perform two automatic high-speed and high-precision removal of non-tobacco foreign matter or defective products in tobacco materials, further improve the removal efficiency of non-tobacco foreign matter or defective products, so that during the production process, product quality problems caused by equipment are greatly reduced, product quality is effectively guaranteed, production costs are reduced, and production efficiency is improved;

[0014] In order to solve the above problems and achieve the above invention objectives, the present invention is a photoelectric-wind separation and impurity removal integrated device based on a photoelectric impurity remover, which is realized by adopting the following design structure and the following technical solutions:

[0015] As an improvement of the photoelectric-wind separation and impurity removal integrated device based on the photoelectric impurity remover of the present invention,

[0016] The invention comprises a conveying device (1), a photoelectric impurity remover (2), an air impurity removal device (3), a material separation conveying device (4) and a rear tobacco leaf conveying device (5); one end of the photoelectric impurity remover (2) is provided with a conveying device (1), and the conveying device (1) is connected with the feed port of the photoelectric impurity remover (2); the other end of the photoelectric impurity remover (2) is provided with a dust removal port on the top, and the air impurity removal device (3) is installed on the dust removal port, and the air impurity removal device (3) is installed on a bracket (6), wherein the photoelectric impurity remover (2) comprises an LED lamp (21), a reflector (22), a CCD camera (23), a pneumatic solenoid valve (24 ), an arc-shaped baffle (25), an isolation plate (26) and an air distribution pipeline device, wherein the LED lamp (21), the reflector (22) and the CCD camera (23) are symmetrically arranged on the upper and lower sides of the interior of the photoelectric impurity remover (2) from the outside to the inside, and the arc-shaped baffle (25) is arranged on the side wall of the photoelectric impurity remover (2); a pneumatic solenoid valve (24) is arranged on the isolation plate (26), and the pneumatic solenoid valve (24) is arranged on one side of the bottom of the isolation plate (26); an air distribution pipeline device is arranged below one side of the isolation plate (26), and the air distribution pipeline device is located between the arc-shaped baffle (25) and the isolation plate (26).

[0017] As an improvement of the above-mentioned present invention, the conveying device (1) includes a support frame (11), a star roller conveyor (12) and a high-speed conveyor (13), and a high-speed conveying belt (131) is installed on the high-speed conveyor (13), wherein the star roller conveyor (12) is installed at the entrance end of the high-speed conveyor (13).

[0018] As a further improvement of the above-mentioned present invention, the air distribution pipeline equipment is an air distribution solenoid valve (27) or an air distribution pipe opening (28), and the air distribution pipe opening (28) is an "N-shaped" plate-like component, which is connected to the air distribution pipe, and the air distribution pipe passes through the photoelectric impurity remover (2) and is connected to the induced draft fan (323).

[0019] As a further improvement of the above-mentioned present invention, the wind separation and impurity removal device (3) comprises a screen drum (31), an arc-shaped isolation member (32), a brush roller (33), a door panel (34) and a dropper (35), wherein the screen drum (31) is coaxially installed with an arc-shaped isolation member (32), one end of the arc-shaped isolation member (32) is sealed and fixed, and the other end is connected to the induced draft fan (323).

[0020] As a further improvement of the above-mentioned present invention, a screen (311) is provided on the screen drum (31), and a plurality of screen holes are evenly distributed on the screen (311), and the screen drum (31) is installed in a screen drum shell, and the screen drum shell is a protective outer cover; the arc-shaped isolation member (32) includes an arc-shaped plate (321) and a sealing gasket (322) and an induced draft fan (323), wherein bearings and sealing gaskets (322) are symmetrically provided on both sides of the arc-shaped isolation member (32) from the outside to the inside, and a screen drum gear is provided between the bearing and the sealing gasket (322) on the side close to the induced draft fan (323).

[0021] As a further improvement of the above-mentioned present invention, the brush roller (33) includes a front brush roller (331) and a rear brush roller (332), wherein the front brush roller (331) and the rear brush roller (332) are symmetrically arranged on both sides below the screen drum (31), and the front brush roller (331) is installed in a front brush roller shell (354), and the rear brush roller (332) is installed in a rear brush roller shell (356).

[0022] As a further improvement of the present invention, the door panel (34) is a cross door panel, one end of the cross door panel is connected to one of the brackets (6), and the other end of the cross door panel is connected to the other bracket (6).

[0023] As a further improvement of the above-mentioned present invention, the dropper (35) includes a dropper body (351), a dust cover (352), a screen drum shell (353), a front brush roller shell (354), a rear brush roller shell (356), and a cross door plate shell (357), wherein the dropper body (351) is a trapezoidal component which is closed on all sides and open at both ends, one end of the trapezoidal component is a material receiving port, and a screen drum shell (353) is installed at the material receiving port, the screen drum shell (353) is connected to the dust cover (352), and the other end of the trapezoidal component is a material discharge port.

[0024] As a further improvement of the above-mentioned present invention, the bracket (6) is two brackets (6) arranged symmetrically on the left and right, and the two brackets (6) are connected as a whole via a connecting rod (61) arranged in parallel.

[0025] As a further improvement of the above-mentioned present invention, the photoelectric impurity remover (2) is electrically connected to a control device, and the control device is a PLC programmable logic controller or a PC.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The device has a simple and practical structure, is easy to install and disassemble, and is efficient. It can remove all kinds of debris mixed in tobacco leaves in real time, which is conducive to effectively removing impurities mixed in tobacco leaves;

[0028] 2. The invention has a simple and reliable structure, is easy to disassemble, has strong practicality, is convenient for maintenance during daily production, can effectively remove foreign matter in real time, and is conducive to effectively removing impurities mixed in tobacco leaves;

[0029] 3. The present invention can automatically remove non-tobacco foreign matter or defective products in tobacco materials at high speed and high precision, reduce the impact of foreign matter on product quality, ensure product quality, reduce production costs, and improve production efficiency;

[0030] 4. The present invention can automatically remove non-tobacco foreign matter or defective products in tobacco materials at high speed and high precision for multiple times, further improving the removal efficiency of non-tobacco foreign matter or defective products, greatly reducing product quality problems caused by equipment during the production process, effectively ensuring product quality, reducing production costs, and improving production efficiency;

[0031] 5. This device effectively integrates the photoelectric impurity removal technology and the wind impurity removal technology. Compared with the practical situation of using the photoelectric impurity remover and the wind impurity remover in series, it effectively saves equipment space and achieves cost reduction and efficiency improvement;

[0032] 6. This device effectively integrates two impurity removal technologies, improves product purity, and enhances customer satisfaction and customer service quality;

[0033] 7. The use of this device reduces the dust and other granular impurities in the smoke, further reduces the dust concentration around the equipment, and realizes cleaner production;

[0034] 8. The exterior of the device of the present invention is coated with a self-luminous fluorescent material, which can clearly mark the location of the device at night or in a dark room or underground construction environment, and can effectively serve as a safety reminder. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0036] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0037] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0038] Figure 3 It is one of the overall structural schematic diagrams of another design structure of the present invention;

[0039] Figure 4 It is a schematic diagram of the overall internal structure of the present invention;

[0040] Figure 5 It is a schematic diagram of the internal structure of another design structure of the present invention;

[0041] Figure 6 It is a schematic diagram of the overall structure of the screen (311) component of the present invention;

[0042] Figure 7 It is a schematic diagram of the overall structure of the arc-shaped isolation member (32) of the present invention;

[0043] Figure 8 is a schematic diagram of the connection position relationship between the screen drum (31) and the screen mesh (311) of the present invention;

[0044] Fig. 9 This is one of the overall structural schematic diagrams of the material dropper (35) of the present invention;

[0045] Fig.10 The second schematic diagram of the overall structure of the material dropper (35) of the present invention;

[0046] Fig.11 It is a schematic diagram of the overall structure of the bracket (6) component of the present invention;

[0047] Fig.12 This is one of the overall structural schematic diagrams of the wind separation and impurity removal device (3) of the present invention;

[0048] Fig.13 This is the second schematic diagram of the overall structure of the wind separation and impurity removal device (3) of the present invention;

[0049] Fig.14 This is one of the schematic diagrams of the overall internal structure of the wind separation and impurity removal device (3) of the present invention;

[0050] Fig.15 It is a schematic diagram of the connection relationship between the screen drum (31) and the material dropper (35) of the present invention;

[0051] Fig.16 It is a schematic diagram of the connection relationship between the screen drum (31) and the brush roller (33) of the present invention;

[0052] Fig.17 It is a schematic diagram of the working state of the screen (311) of the present invention;

[0053] Fig.18 Schematic diagram of the positional relationship between the screen (311), the arc plate (321) and the brush roller (33) of the present invention

[0054] Fig.19 It is a schematic diagram of the positional relationship between the brush roller (33) and the material dropper (35) of the present invention;

[0055] Fig. 20 It is a schematic diagram of the overall structure of the door panel (34) component of the present invention;

[0056] Fig.21 It is a schematic diagram of the overall structure of the brush roller (33) component of the present invention;

[0057] Fig. 22 It is a schematic diagram of the overall structure of the sealing gasket (322) component of the present invention;

[0058] Fig.23 It is a schematic diagram of the overall structure of the wind separation and impurity removal device (3) and the bracket (6) components of the present invention;

[0059] Among them, the numbers in the figure are: 1—conveying device, 11—support frame, 12—star roller conveyor, 12—high-speed conveyor, 131—high-speed transport belt;

[0060] 2—photoelectric impurity remover, 21—LED lamp, 22—reflector, 23—CCD camera, 24—pneumatic solenoid valve, 25—arc baffle, 26—isolation plate, 27—air distribution solenoid valve, 28—air distribution pipe port;

[0061] 3—wind separation and impurity removal device, 31—screen drum, 311—screen, 32—arc spacer, 321—arc plate, 322—sealing gasket, 323—induced draft fan, 33—brush roller, 331—front brush roller, 332—rear brush roller, 34—door plate, 35—feeder, 351—feeder body, 352—dust cover, 353—screen drum shell, 354—front brush roller shell, 356—rear brush roller shell, 357—cross door plate shell;

[0062] 4—Material distribution and conveying device;

[0063] 5—rear end tobacco leaf conveying device;

[0064] 6—bracket, 61—connecting rod. DETAILED DESCRIPTION

[0065] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0066] As shown in the attached drawings of the specification, a photoelectric-wind impurity removal integrated device based on a photoelectric impurity remover comprises a conveying device 1, a photoelectric impurity remover 2, a wind impurity removal device 3, a material separation conveying device 4 and a rear-end tobacco leaf conveying device 5; one end of the photoelectric impurity remover 2 is provided with a conveying device 1, and the conveying device 1 is connected with the feed port of the photoelectric impurity remover 2; the top of the other end of the photoelectric impurity remover 2 is provided with a dust removal port, and the wind impurity removal device 3 is installed on the dust removal port, and the wind impurity removal device 3 is installed on a bracket 6, wherein the photoelectric impurity remover 2 comprises an LED lamp 21, a reflector 22, a CC D camera 23, pneumatic solenoid valve 24, arc baffle 25, isolation plate 26 and air distribution pipeline equipment, the LED lamp 21, reflector 22 and CCD camera 23 are symmetrically arranged on the upper and lower sides of the inside of the photoelectric impurity remover 2 from the outside to the inside, and the arc baffle 25 is arranged on the side wall of the photoelectric impurity remover 2; the isolation plate 26 is provided with a pneumatic solenoid valve 24, and the pneumatic solenoid valve 24 is arranged on one side of the bottom of the isolation plate 26, and an air distribution pipeline equipment is arranged below one side of the isolation plate 26, and the air distribution pipeline equipment is located between the arc baffle 25 and the isolation plate 26.

[0067] Furthermore, the outer surfaces of the conveying device 1, the photoelectric impurity remover 2, the wind impurity remover 3, the material separation conveying device 4, the rear-end tobacco conveying device 5 and the bracket 6 are sprayed with an injection molding layer, an anti-rust layer and a warning layer in sequence from the inside to the outside, and the warning layer is coated with fluorescent powder.

[0068] Specifically, a polymer wear-resistant material is injection molded on the injection layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat and an epoxy micaceous iron intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the warning layer is a yellow or black reflective warning tape or a reflective color film or a reflective paint.

[0069] In the present invention, the material dividing and conveying device 4 and the rear tobacco leaf conveying device 5 are respectively located below the photoelectric impurity remover 2, and the material dividing and conveying device 4 and the rear tobacco leaf conveying device 5 are arranged parallel to each other.

[0070] In summary, a more specific embodiment of the present invention is:

[0071] First, connect the left side plate of the dropper to the dropper body 351, and install the front brush roller 331, the rear brush roller 332 and the cross-shaped door panel 34 in the front brush roller shell 354, the rear brush roller shell 356 and the cross-shaped door panel shell 357 on the dropper 35 respectively in turn, and then connect the right side plate to the dropper body 351, and then weld the dropper connecting rod 61 to the set positions on the left bracket, the right bracket and the dropper 35, and connect them firmly; next, install the left front brush roller bearing and the right front brush roller bearing of the front brush roller 331 at the set positions at both ends of the front brush roller 331 axis respectively, and then install the left front brush roller bearing seat and the right front brush roller bearing seat on the left front brush roller bearing and the right front brush roller bearing respectively, and fix the left front brush roller bearing seat and the right front brush roller bearing seat through the corresponding brush roller bearing seat openings on the bracket. Similarly, the rear brush roller 332 is fixed in the same way; the next step is to install and fix the left door panel bearing and the right door panel bearing of the cross-shaped door panel 34 on the two ends of the cross door panel shaft respectively, and then fix the left door panel bearing seat and the right door panel bearing seat on the left door panel bearing and the right door panel bearing seat respectively, and fix the left door panel bearing seat and the right door panel bearing seat on one of the brackets and the other bracket respectively through the corresponding cross door panel bearing seat holes on the bracket 6; the next step is to install the inner sealing rings on the arc isolation The arc-shaped isolation member 32 is placed in the left fixed groove and the right fixed groove of the inner sealing ring of the material dropper, and the outer sealing ring is respectively installed in the left fixed groove and the right fixed groove of the outer sealing ring of the material dropper; in the next step, the arc-shaped isolation member 32 is installed in the corresponding position in the screen drum 31, so that the inner sealing ring is respectively placed in the left groove and the right groove of the inner sealing ring on the inner side of the screen drum 31, and then the screen drum 31 is installed in the screen drum shell 353 of the material dropper 35, so that the outer sealing ring is respectively placed in the left groove and the right groove of the outer sealing ring on the outer side of the screen drum. In the next step, the sieve drum transmission gear is fixed to the sieve drum 31 through the gear connecting hole on the sieve drum, and then the left and right bearings of the sieve drum are respectively installed at the set positions at both ends of the sieve drum 31, and then the left and right bearing seats of the sieve drum are matched and installed on the left and right bearings of the sieve drum, and the left and right bearing seats of the sieve drum are fixed through the holes of the sieve drum bearing seats on one of the brackets and the other bracket; in the next step, the hole of the isolation plate connecting rod at the right end of the arc-shaped isolation piece 32 is matched and fixed with the isolation plate connecting hole groove on the bracket 6, and the arc The left end induced draft fan interface hole of the shaped isolation piece 32 is connected to the induced draft fan pipe interface through a sealing ring; in the next step, the dust cover 352 is installed between the dust removal port of the photoelectric impurity remover and the upper end interface of the dropper, sealed and fixed, and then the air distribution solenoid valve 27 is installed at the corresponding position in the photoelectric impurity remover 2 and the induced draft fan 323 outlet air pipe outlet is treated with dust separately, or the air distribution pipe outlet 28 is installed at the corresponding position in the photoelectric impurity remover 2 and the induced draft fan outlet air pipe dust removal pipe outlet is treated separately according to actual needs, and the other pipe outlet is connected to the air distribution pipe outlet 28.

[0072] Then, further improvements are made to the above-mentioned photoelectric impurity remover, and an air separation solenoid valve 27 or an "N"-type air separation pipe port 28 is added under the isolation plate; when the foreign matter content in the tobacco leaves is low or the operating frequency of the pneumatic solenoid valve 24 is low, in order to minimize the secondary crushing of the tobacco leaves, it is more reasonable to add an air separation solenoid valve 27 under the isolation plate. When the front-end photoelectric detection device detects the presence of foreign matter in the tobacco leaves, the pneumatic solenoid valve 24 is activated to remove the foreign matter in the tobacco leaves, and the small debris that is not removed continues to be thrown forward. When the small foreign matter reaches the top of the air separation solenoid valve 27, the air separation solenoid valve 27 is activated to blow up the small foreign matter, and then the foreign matter is removed through the air separation device. One end of the dust hood 352 is connected to the dust removal port by bolts and sealing washers, and the other end is connected to the upper interface of the dropper by bolts and sealing washers. Under the action of negative air pressure, foreign matter falls along the dust hood onto the screen in the screen drum shell. Since an arc-shaped isolation piece is arranged on the inner side of the screen, the arc-shaped isolation piece is a cylindrical structure with an opening on the upper middle part. One end of the structure is sealed by welding and the structure is fixed to the connecting plate hole groove on the bracket by bolts through the connecting rod hole. The other end is connected to the air inlet of the fan by bolts and sealing rings, and the fan is connected and fixed to the bracket. When the fan is working, the upper part of the arc-shaped partition is in a negative pressure state. Since the arc-shaped partition and the outer screen drum are sealed with a sealing ring, the upper part of the outer screen drum is also in a negative pressure state, and the outer side of the screen drum and the screen drum shell are also sealed with a sealing ring. When the fan is working, the air outside the screen drum shell does not enter the screen drum, ensuring a relatively stable negative pressure state above the arc-shaped partition and the stability of the wind separation effect. The outer sides of the two ends of the screen drum are fixed in the bearings, and the bearings are connected in the bearing seat. The bearing seat is fixed to the bracket by bolts and other connectors; the middle part of the coordinated dropper is fixed to the bracket by bolts, so that the arc-shaped partition, the screen drum and the screen drum shell are indirectly fixed to the bracket. The front brush roller and the rear brush roller are distributed on both sides below the screen drum, and both ends of the brush roller shaft are connected to the bracket through bearings and bearing seats. The cross door panel below the dropper is connected to the bracket through the bearings and bearing seats at both ends of the door panel bearing. During operation, the arc-shaped isolation piece on the inner side of the screen drum and the screen drum shell on the outer side of the screen drum do not rotate. The screen drum motor transmits power to the gear on the outer side of one end of the screen drum through a chain connection or a gear connection, further driving the screen drum to rotate. The front brush roller and the rear brush roller are both powered by the brush roller motor through a gear connected at one end, and the cross door panel is also powered by the door panel motor through a gear connected at one end. The screen drum motor, the brush roller motor and the door panel motor are all connected and fixed to the bracket through a motor seat. When the air distribution solenoid valve 27 is used, the fan outlet is connected to the dust removal duct so that the air at the fan outlet enters the dust removal device.When using the "N" type air distribution pipe opening 28, part of the air at the fan outlet is transported back to the "N" type air distribution pipe through the circulation pipe to ensure the air distribution volume; part of the air enters the dust removal pipe and is further transported to the dust removal device for processing, thereby completing the installation of the device and subsequent use.

[0073] Before use, turn on the control device to remove foreign matter from the tobacco. During operation, the mixture of tobacco and foreign matter after leaf beating is thinned and formed into a single layer by the star roller conveyor 12, and then accelerated by the high-speed conveyor 13 and thrown out at high speed. When the speed of the thrown material is greater than 5.5m / s, an auxiliary wind pressure device is required to be set above the high-speed conveyor 13, so that the mixed material can be thrown out at high speed and stably through the high-speed air flow and the acceleration of the high-speed conveyor 13. When the speed of the thrown material is less than 5.5m / s, the auxiliary wind pressure device is not required, and the material can be directly thrown out at high speed after being accelerated by the high-speed conveyor 13. The exit of the high-speed conveyor 13 is connected to the photoelectric impurity remover 2. High-brightness LED lamps 21 are arranged on the upper and lower sides of the entrance of the photoelectric impurity remover 2, and are installed on the lighting device bracket. After the single-layer processed material is irradiated by the LED lamp 21, the colors of the upper and lower surfaces of the material are clear and easy to identify. At this time, the material continues to be thrown forward horizontally, and the color information of the upper and lower surfaces of the material is reflected by the reflectors arranged on the upper and lower sides of the material and transmitted to the upper and lower CCD cameras 23 respectively. The upper and lower CCD cameras 23 transmit the received color information to the computer system after processing; the computer system compares and analyzes the received color information with the sample tobacco leaf information, and performs secondary recognition processing. If it is identified as a foreign object, the air corresponding to the material unit identified as a foreign object is driven

[0074] The pneumatic solenoid valve 24 works, ejecting a high-pressure air flow to remove foreign matter. The removed material enters the material distribution and conveying device 4, and then the foreign matter is removed manually for a second time. If it is identified as qualified tobacco leaves, the material will rely on inertia to be thrown directly onto the arc plate 321 above the rear-end tobacco conveying device 5, and then fall onto the rear-end tobacco conveying device 5 along the arc plate 321. Since high-pressure air flow is used to remove foreign matter, some foreign matter with a large specific gravity and difficult to change shape can be directly removed by the high-pressure air flow, but some foreign matter with a small specific gravity and easy to change shape is not easy to remove by the high-pressure air flow. This type of foreign matter has a small mass, small inertia, and small suspension force, and its motion trajectory is easy to change. When thrown onto the rear-end tobacco conveying device 5, since the rear-end tobacco conveying device 5 is connected to a dust removal port, the dust removal port above the rear-end tobacco conveying device 5 is in a negative pressure state. Under the action of negative pressure, the small mass, small inertia, and suspension of the foreign matter are easily removed. Foreign matter with less force will gradually float up, pass through the dust cover 352 and enter the sieve drum 31 in the dropper 35. The left and right ends of the sieve drum 31 are respectively fixed on the bearing and the inner side of the bearing. External sealing ring grooves are distributed on the outer sides of both ends of the sieve drum, which cooperate with the external sealing ring fixing grooves on the inner sides of both ends of the dropper sieve drum shell 353, and a rotating dustproof sealing ring, such as a rotating dustproof O-ring, is used for sealing to prevent outside air from entering the sieve drum 31. Internal sealing ring grooves are distributed on the inner sides of both ends of the sieve drum 31, which cooperate with the internal sealing ring fixing grooves on the outer sides of both ends of the arc-shaped isolation member 32, and a rotating dustproof sealing ring is used for sealing.

[0075] A gear is installed on the outer surface of the right side of the screen drum 31. Driven by the motor, the gear drives the screen drum 31 to start rotating. Since an arc-shaped isolation piece 32 is installed in the screen drum 31, one end of the isolation plate 26 is sealed and fixed, and the right end is connected to the induced draft fan 323. Under the action of the induced draft fan 323, a negative pressure state is presented above the arc-shaped isolation piece 32. Under the action of the negative pressure, foreign matter is adsorbed on the screen 311. When the screen drum rotates by an angle of 0-ααβγθ, the foreign matter adsorbed on the screen drum 31 gradually rotates to the back of the arc-shaped plate 321 with the screen 311. At this time, the negative pressure decreases sharply and the adsorption force gradually weakens. When the foreign matter rotates by an angle of α+β with the screen drum, the foreign matter reaches the front brush roller 331. The left and right ends of the front brush roller 331 are installed in bearings and bearings. Driven by the motor, the front brush roller 331 rotates with the gear to remove the foreign matter attached to the screen drum 31 along the tangential direction. In order to reduce the degree of foreign matter adhering to the brush roller, the installation space of the front brush roller 331 and the rear brush roller 332 is set to a type of elliptical area. The front end area in contact with the screen drum along the rotation direction is an area that gradually decreases along the radius of the brush roller.

[0076] Since the rotation of the front brush roller 331 and the rear brush roller 332 drives the regional air flow, the rotation of the front brush roller 331 and the rear brush roller 332 generates a certain centrifugal force and centripetal force, and the area of ​​the front brush roller 331 and the rear brush roller 332 close to the screen drum is arranged to have a radius trend from large to small along the rotation direction of the front brush roller 331 and the rear brush roller 332. At the contact point between the front brush roller 331 and the rear brush roller 332 and the screen drum 31, the air flows along the tangential direction, so that the contact point between the front brush roller 331 and the rear brush roller 332 and the screen drum 31 presents a certain positive pressure wind force, so that foreign matter attached to the screen drum 31 can be easily removed by the brush roller.

[0077] Since foreign matter is attached to the screen drum 31, the foreign matter that is not removed by the front brush roller 331 reaches the rear brush roller 332 as the screen drum 31 continues to rotate at an angle of γ. The rear brush roller 332 rotates under the drive of the motor, and its rotation direction is opposite to that of the front brush roller 331. The rear brush roller 332 removes the foreign matter in the opposite direction. The foreign matter removed by the front brush roller 331 and the rear brush roller 332 moves downward along the dropper 35. Since the diameter of the middle dropper tube changes from small to large from top to bottom, and the air pressure changes from large to small, the corresponding micro-negative pressure in this area changes from large to small, and the downward movement trend of the foreign matter becomes more and more obvious. The fallen foreign matter gathers on the cross-shaped door panel 34. When the foreign matter gathers to a certain amount, the cross-shaped door panel 34 can be reversed 180° by motor drive or manual mode, so that the foreign matter falls from the discharge port and is then collected and processed manually.

[0078] Since the arc plate 321 is in an arc shape, its radial direction is upward (the original photoelectric impurity remover arc plate has its radial direction upward). When the material hits the arc plate 321, due to a slight rebound, some impurities mixed in the tobacco leaves gradually float up due to their small specific gravity under the action of the negative pressure above, and are discharged through the air separation impurity removal device 3 after passing through the dust removal cover 352. A row of air separation pneumatic solenoid valves 24 are arranged below the material above the rear tobacco conveying device 5. When the front end identifies foreign matter in the corresponding area, when the material is thrown above the corresponding air separation solenoid valve 27, the air separation solenoid valve 27 is activated to eject a high-pressure air flow to remove the foreign matter for a second time. The removed foreign matter gradually floats up under the negative pressure at the dust removal port, and is discharged through the air separation impurity removal device 3 after passing through the dust removal cover 352. When there are too many impurities in the mixed material, the air separation solenoid valve 27 can be replaced with an air separation pipe port 28. The other end of the air separation pipe port 28 is connected to the outlet of the induced draft fan 323. The air delivery pressure of the air delivery pipe port can be adjusted by adjusting the opening size of the air separation pipe, so that the tobacco material can be evenly blown upward, making it easy to remove foreign matter in the material. In order to ensure that the wind blown out of the air separation pipe port 28 forms a uniform wind field, the air separation pipe port 28 is designed to be "N" shaped, and the cross-sectional area of ​​the pipe port changes from large to small. The "N"-shaped pipe port and the isolation plate 26 separate the photoelectric impurity removal area and the air separation impurity removal area, ensuring a more stable performance of the equipment.

[0079] During the entire working process mentioned above, while the tobacco material is being photoelectrically impurity-removed by the photoelectric impurity-removing equipment, the air separation impurity-removing equipment is also in operation. When the photoelectric impurity-removing equipment identifies that there are foreign objects in the material, the photoelectric impurity-removing machine removes the foreign objects by driving the corresponding solenoid valve. In order to further eliminate the foreign objects that are not removed or completely removed during the foreign object removal process, some light and tiny foreign objects are required to be removed by air separation impurity-removing equipment. When the air separation pipeline equipment is used for removal, the air separation pipeline equipment is always in working state, and a small amount of wind is always blown out of the air separation pipeline. For some foreign objects with relatively small mass, due to their small equivalent spherical diameter and low density, their motion inertia is easy to change. After the light foreign objects are blown away from the original motion trajectory, they further move upward under the action of the negative pressure air above, and then fall onto the screen drum and are adsorbed on the screen drum. When using air separation solenoid valve for removal, connect the control of the air separation solenoid valve to the control system of the photoelectric impurity remover, or establish corresponding interlocking control with the solenoid valve of the photoelectric impurity remover. When the solenoid valve of the photoelectric impurity remover receives the action signal, the corresponding action signal is also transmitted to the air separation solenoid valve at the same time. The air separation solenoid valve acts after a certain time delay. At this time, the material containing foreign matter is just thrown to the top of the air separation solenoid valve, and the foreign matter that has not been completely removed is removed again. After the foreign matter is removed, it is driven by the negative pressure air above to slowly rise and then fall to the screen drum and adsorb on the screen drum. The screen drum is driven by a motor and is always rotating. A front brush roller and a rear brush roller are arranged at the lower part of the screen drum shell, and the front brush roller and the rear brush roller are always rotating towards each other, respectively removing the foreign matter adsorbed on the screen drum once and twice. After being removed, the foreign matter falls into the cross door panel shell. The cross door panel shaft is driven by a motor, and the rotation of the motor is controlled by the PLC system. It rotates 180° once at a certain interval, such as 10 minutes. The foreign matter deposited on the cross door panel falls from the drop port at the bottom of the dropper and is then processed centrally.

[0080] Finally, it should be noted that the above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A photoelectric-wind separation and impurity removal integrated device based on a photoelectric impurity remover, comprising a conveying device (1), a photoelectric impurity remover (2), an air separation and impurity removal device (3), a material separation and conveying device (4) and a rear-end tobacco leaf conveying device (5); characterized in that: The photoelectric impurity remover (2) is provided with a conveying device (1) at one end, and the conveying device (1) is connected to the feed port of the photoelectric impurity remover (2); the other end of the photoelectric impurity remover (2) is provided with a dust removal port at the top, and an air separation impurity removal device (3) is installed on the dust removal port, and the air separation impurity removal device (3) is installed on the bracket (6), wherein the photoelectric impurity remover (2) includes an LED lamp (21), a reflector (22), a CCD camera (23), a pneumatic solenoid valve (24), an arc baffle (25), an isolation plate (26) and an air separation pipeline device The LED lamp (21), the reflector (22) and the CCD camera (23) are symmetrically arranged on the upper and lower sides of the photoelectric impurity remover (2) from the outside to the inside, and the arc baffle (25) is arranged on the side wall of the photoelectric impurity remover (2); the isolation plate (26) is provided with a pneumatic solenoid valve (24), and the pneumatic solenoid valve (24) is arranged on one side of the bottom of the isolation plate (26); an air distribution pipeline device is arranged below one side of the isolation plate (26), and the air distribution pipeline device is located between the arc baffle (25) and the isolation plate (26); The air distribution pipeline equipment is an air distribution solenoid valve (27) or an air distribution impurity remover, and the air distribution impurity remover comprises an air distribution pipe opening (28) and an air distribution pipe, wherein the air distribution pipe opening (28) is "N" type, and the N" type air distribution pipe opening (28) is connected to the air distribution pipe, and the air distribution pipe passes through the photoelectric impurity remover (2) and is connected to the induced draft fan (323); wherein: When the air separation solenoid valve (27) is used, the fan outlet is connected to the dust removal pipeline so that the air at the fan outlet enters the dust removal device; When the "N" type air distribution pipe opening (28) is used, part of the air at the fan outlet is transported back to the "N" type air distribution pipe through the circulation pipe to ensure the air distribution volume; part of the air enters the dust removal pipe and is further transported to the dust removal device for processing, thereby completing the installation of the device and then using it; The air separation and impurity removal device (3) comprises a screen drum (31), an arc-shaped isolating member (32), a brush roller (33), a door plate (34) and a material dropper (35), wherein the screen drum (31) is coaxially mounted with the arc-shaped isolating member (32), one end of the arc-shaped isolating member (32) is sealed and fixed, and the other end is connected to an induced draft fan (323); The sieve drum (31) is provided with a sieve mesh (311), and the sieve mesh (311) is evenly distributed with a plurality of sieve mesh holes, and the sieve drum (31) is installed in a sieve drum shell, and the sieve drum shell is a protective outer cover; the arc-shaped isolating member (32) comprises an arc-shaped plate (321), a sealing gasket (322), and an induced draft fan (323), wherein bearings and sealing gaskets (322) are symmetrically provided on both sides of the arc-shaped isolating member (32) from the outside to the inside, and a sieve drum gear is provided between the bearing and the sealing gasket (322) on the side close to the induced draft fan (323); The photoelectric impurity remover (2) is electrically connected to a control device, and the control device is a PLC programmable logic controller or a PC.

2. The photoelectric-wind separation and impurity removal integrated device based on the photoelectric impurity remover according to claim 1 is characterized in that: The conveying device (1) comprises a support frame (11), a star roller conveyor (12) and a high-speed conveyor (13); a high-speed transport belt (131) is installed on the high-speed conveyor (13); wherein the star roller conveyor (12) is installed at the entrance end of the high-speed conveyor (13).

3. The integrated photoelectric-wind separation and impurity removal device based on a photoelectric impurity remover according to claim 1 is characterized in that: The brush roller (33) comprises a front brush roller (331) and a rear brush roller (332), wherein the front brush roller (331) and the rear brush roller (332) are symmetrically arranged on both sides below the screen drum (31), and the front brush roller (331) is installed in a front brush roller shell (354), and the rear brush roller (332) is installed in a rear brush roller shell (356).

4. The photoelectric-wind separation and impurity removal integrated device based on the photoelectric impurity remover according to claim 1 is characterized in that: The door panel (34) is a cross door panel, one end of the cross door panel is connected to one of the brackets (6), and the other end of the cross door panel is connected to the other bracket (6).

5. The photoelectric-wind separation and impurity removal integrated device based on the photoelectric impurity remover according to claim 1 is characterized in that: The dropper (35) comprises a dropper body (351), a dust cover (352), a screen drum shell (353), a front brush roller shell (354), a rear brush roller shell (356), and a cross door plate shell (357), wherein the dropper body (351) is a trapezoidal component which is closed on all sides and open at both ends; one end of the trapezoidal component is a material receiving port, and a screen drum shell (353) is installed at the material receiving port; the screen drum shell (353) is connected to the dust cover (352); and the other end of the trapezoidal component is a material discharging port.

6. The integrated photoelectric-wind separation and impurity removal device based on a photoelectric impurity remover according to claim 1 is characterized in that: The two brackets (6) are symmetrically arranged on the left and right, and the two brackets (6) are connected as a whole via a connecting rod (61) arranged in parallel.

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