Visual recognition device and photoelectric impurity removal equipment

Abstract

The application relates to a visual recognition device and a photoelectric impurity removal equipment, and belongs to the technical field of tobacco impurity removal. The device comprises a first material pipe and an optical case. A light source assembly and a camera are arranged in the optical case. A first recognition window is arranged on the side of the first material pipe facing the optical case. A sealing pad is arranged on the first material pipe along the profile direction of the first recognition window. A second recognition window is arranged on the side of the optical case facing the first material pipe. A visual glass is arranged in the second recognition window. The visual glass faces the first recognition window. The optical case is driven to be close to / distant from the first material pipe. In the working state, the visual glass is tightly pressed against the sealing pad, and the visual glass covers the first recognition window. The application has the effect of improving the maintenance convenience of the visual recognition system, thereby improving the production efficiency.

Description

Technical Field

[0001] This application relates to the field of tobacco impurity removal technology, and in particular to a visual recognition device and photoelectric impurity removal equipment. Background Technology

[0002] In tobacco processing and impurity removal, to identify and remove light impurities mixed in with the tobacco leaves, a visual recognition system is usually installed in the conveying channel. This system uses a camera to image the tobacco leaves and combines this with image processing algorithms to identify foreign objects. To facilitate imaging and recognition, existing technologies often use windows on the side wall of the discharge channel with glass installed at the window position, allowing the camera to observe the state of the tobacco leaves inside the material channel through the glass, thus achieving online identification.

[0003] However, in actual use, dust and impurities are carried during the transport of sheet smoke, and the airflow may cause particulate matter to accumulate in the air. This easily leads to dust accumulation or stains on the glass surface of the identification window, affecting the camera's image quality and consequently reducing identification accuracy and impurity removal efficiency. Existing structures typically fix the glass directly to the feed pipe. When the glass surface becomes dirty, the glass assembly on the channel must be manually disassembled for cleaning or replacement. This process is cumbersome, time-consuming, and impacts the overall efficiency of the production line. Utility Model Content

[0004] To improve the ease of maintenance of visual recognition systems and thus increase production efficiency, this application provides a visual recognition device and an optoelectronic cleaning equipment.

[0005] The visual recognition device provided in this application adopts the following technical solution:

[0006] A visual recognition device includes a first feed tube and an optical housing. A light source assembly and a camera are installed inside the optical housing. A first recognition window is opened on the side of the first feed tube facing the optical housing. A sealing gasket is provided on the first feed tube along the outline of the first recognition window. A second recognition window is opened on the side of the optical housing facing the first feed tube. A viewing glass is installed inside the second recognition window, and the viewing glass is directly opposite the first recognition window. The optical housing moves closer to / away from the first feed tube via a driving component. In the working state, the viewing glass is pressed against the sealing gasket, and the viewing glass covers the first recognition window.

[0007] By adopting the above technical solution, under normal working conditions, the visible glass on the optical housing is tightly fitted with the sealing gasket to form a sealed interface, preventing external air from entering the first feed pipe and avoiding smoke and impurities from entering the optical housing, maintaining the stability of airflow and the continuity of smoke delivery in the recognition area, and reducing the situation of air leakage interfering with the air field.

[0008] The light source assembly works in conjunction with the camera to provide good imaging conditions when smoke passes through the recognition window. When dust or stains accumulate on the surface of the visible glass, the optical housing can be easily cleaned by simply moving it away from the first feed tube. This eliminates the need to disassemble the glass body, significantly improving the maintainability and operational continuity of the equipment, and thus helping to improve the overall production efficiency of the line.

[0009] Optionally, the optical housing is connected to a movable base, the interior of which is a cavity structure for arranging the cable harness of the light source assembly and camera, and the driving component is connected to the movable base.

[0010] By adopting the above technical solutions, the mobile base not only provides stable installation and support for the optical chassis, but its cavity structure also makes cable laying more centralized and safe, facilitates inspection and maintenance, and helps to improve the integration and reliability of the whole machine.

[0011] Optionally, there are two optical housings and two movable seats. The first feed tube is located between the two movable seats, and the first identification window is provided on both sides of the first feed tube.

[0012] By adopting the above technical solution, the first feed tube is set between the two movable seats, forming a double-sided optical recognition structure. Compared with the traditional single-sided recognition structure in which the optical housing is only pressed against the recognition window on one side, this solution presses against the recognition window on both sides at the same time, which not only has a better sealing effect and helps to prevent external air from entering the first feed tube, but also significantly improves the recognition effect of impurities and smoke.

[0013] This application also provides a photoelectric impurity removal device using the following technical solution:

[0014] A photoelectric impurity removal device includes the aforementioned visual recognition device, and further includes a separation chamber, a second feed pipe, and a jetting air manifold. The second feed pipe is connected to the first feed pipe and is vertically arranged. The jetting air manifold is installed on one side of the second feed pipe and is used to spray air laterally into the second feed pipe. The separation chamber is installed on the side of the second feed pipe opposite to the jetting air manifold and is connected to it.

[0015] By adopting the above technical solution, the visual recognition device can accurately identify light impurities in tobacco leaves and achieve targeted removal by combining with the blowing air bag. The impurities enter the separation chamber for centralized collection under the action of airflow. The removal process is efficient and clean, which helps to improve the impurity removal effect and the automation level of the equipment.

[0016] Optionally, a discharge pipe is connected to the bottom of the separation chamber, and a conveyor belt is installed inside the separation chamber.

[0017] By adopting the above technical solution, the conveyor belt can promptly transport impurities in the separation chamber to the discharge pipe for discharge, avoiding the accumulation and retention of impurities in the separation chamber, thereby ensuring the stable operation of the impurity removal system.

[0018] Optionally, the discharge pipe is installed at the end of the separation chamber away from the second feed pipe. The first feed pipe is vertically arranged, and the second feed pipe is connected to the top of the first feed pipe. One of the movable seats is located below the separation chamber, and the top of the other movable seat is equipped with an installation box. The blowing air manifold is installed in the installation box. When the visible glass is pressed against the sealing gasket, the blowing end of the blowing air manifold is exactly connected to the second feed pipe.

[0019] By adopting the above technical solution, the vertical and horizontal arrangement of the discharge pipe, separation chamber, and first feed pipe makes full use of the space below the separation chamber, which can be used as an installation and movement area for a mobile base, improving the compactness of the equipment structure and the space utilization rate. The blowing air bag is installed in a mounting box on another mobile base, realizing synchronous movement with the mobile base without the need for additional independent fixed brackets. This not only simplifies the structure but also facilitates the disassembly and maintenance of the blowing air bag. Especially when cleaning the viewing glass, the blowing air bag can be cleaned at the same time, improving the integration and maintainability of the whole machine and helping to improve the operating efficiency and overall stability of the equipment.

[0020] Optionally, the separation chamber is connected to a dust collection box.

[0021] By adopting the above technical solutions, the dust collection box can promptly extract and treat the dust generated during the spraying process, purify the air inside the box, and improve the cleanliness of the working environment.

[0022] Optionally, a filter screen is installed at the air inlet end of the dust collection box, and a scraping assembly is also installed at the air inlet end of the dust collection box. The scraping assembly is used to scrape the impurities adsorbed on the filter screen off into the separation chamber.

[0023] By adopting the above technical solutions, the filter plate effectively prevents light impurities from being sucked into the fan system and causing damage or pollution; the scraping assembly can periodically scrape the impurities adsorbed on the surface of the filter plate to avoid clogging the filter pores and maintain the stability of the dust removal effect.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The light source component works in conjunction with the camera to provide good imaging conditions when smoke passes through the recognition window; when dust or stains accumulate on the surface of the visible glass, the optical housing can be easily cleaned by simply moving it away from the first feed tube without disassembling the glass body, which significantly improves the maintainability and operational continuity of the equipment, thereby improving the overall production efficiency of the line.

[0026] 2. The first feed tube is set between the two movable seats, forming a double-sided optical recognition structure. Compared with the traditional single-sided recognition structure in which the optical housing is only pressed against the recognition window on one side, this solution presses against the recognition window on both sides at the same time, which not only has a better sealing effect and helps to prevent external air from entering the first feed tube, but also significantly improves the recognition effect of impurities and smoke.

[0027] 3. The conveyor belt can promptly transport impurities in the separation chamber to the discharge pipe for discharge, preventing impurities from accumulating and lingering in the separation chamber, thereby ensuring the stable operation of the impurity removal system;

[0028] 4. The vertical and horizontal arrangement of the discharge pipe, separation chamber, and first feed pipe makes full use of the space below the separation chamber, which can be used as an installation and movement area for a mobile base, improving the compactness of the equipment structure and the space utilization rate. The blowing air bag is installed in a mounting box on another mobile base, which enables it to move synchronously with the mobile base without the need for an additional independent fixed support. This not only simplifies the structure but also facilitates the disassembly and maintenance of the blowing air bag. Especially when cleaning the viewing glass, the blowing air bag can be cleaned at the same time, improving the integration and maintainability of the whole machine and helping to improve the operating efficiency and overall stability of the equipment.

[0029] 5. The filter plate effectively prevents light impurities from being sucked into the fan system, causing damage or contamination; the scraper assembly can periodically scrape the impurities adsorbed on the surface of the filter plate to avoid clogging the filter pores and maintain the stability of the dust removal effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0031] Figure 2 This is a schematic diagram illustrating the structure of the first feed tube and the optical housing in an embodiment of this application.

[0032] Figure 3 This is a schematic diagram illustrating the structure of the separation chamber and the dust removal box in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Mounting frame; 2. First material passage pipe; 21. First identification window; 22. Sealing gasket; 3. Movable seat; 4. Optical housing; 41. Second identification window; 42. Light source assembly; 43. Camera; 44. Viewing glass; 5. Drive unit; 6. Separation chamber; 61. Discharge pipe; 62. Conveyor belt; 7. Second material passage pipe; 81. Air jet manifold; 82. Mounting box; 9. Dust collection box; 91. Filter screen; 92. Scraper assembly. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0035] This application discloses a visual recognition device.

[0036] like Figure 1 and Figure 2 The visual recognition device includes a mounting frame 1 and a first feed tube 2. The first feed tube 2 is fixed to the mounting frame 1 and is vertically arranged. Two movable seats 3 are slidably connected to the mounting frame 1, and the first feed tube 2 is located between the two movable seats 3. The movable seats 3 are L-shaped seats, and an optical housing 4 is fixedly installed in the stepped groove of the movable seats 3. The first feed tube 2 and the optical housing 4 are directly opposite each other. A first recognition window 21 is opened on both sides of the first feed tube 2, and a sealing gasket 22 is provided on the first feed tube 2 along the contour direction of the first recognition window 21. An optical housing 4 has a second identification window 41 on the side facing the first feed tube 2. A light source assembly 42 and a camera 43 are installed inside the optical housing 4. In this embodiment, the light source assembly 42 can be an LED strip light source; in other embodiments, it can also be an LED strip light source / backlight, etc. The movable base 3 has a cavity structure for arranging the cable harness of the light source assembly 42 and the camera 43. A viewing glass 44 is installed inside the second identification window 41. The area of ​​the viewing glass 44 is larger than the area of ​​the first identification window 21, and it is positioned directly opposite the first identification window 21. The movable base 3 is driven by a driving component 5, allowing the optical housing 4 to move closer to / away from the first feed tube 2. In this embodiment, the driving component 5 is an electric actuator; in other embodiments, it can be an electric lead screw / hydraulic cylinder / pneumatic cylinder, etc. In the working state, the viewing glass 44 is pressed against the sealing gasket 22, and it covers the first identification window 21.

[0037] The implementation principle of the visual recognition device in this application embodiment is as follows: Under normal working conditions, the visible glass 44 on the optical housing 4 is tightly fitted with the sealing gasket 22 of the first feed pipe 2 to form a sealed interface, preventing external air from entering the first feed pipe 2 and preventing smoke and impurities from entering the optical housing 4, maintaining the airflow stability and smoke delivery continuity in the recognition area, and reducing the situation of air leakage interfering with the wind field.

[0038] The light source assembly 42 works in conjunction with the camera 43 to provide good imaging conditions when smoke passes through the recognition window. When dust or stains accumulate on the surface of the viewing glass 44, the viewing glass 44 can be easily cleaned by simply controlling the optical housing 4 away from the first feed pipe 2 without disassembling the viewing glass 44. This significantly improves the maintainability and operational continuity of the equipment, thereby helping to improve the overall production efficiency of the line.

[0039] This application also discloses a photoelectric impurity removal device.

[0040] like Figure 1 and Figure 3 The photoelectric impurity removal equipment includes the visual recognition device of this application embodiment, and also includes a separation chamber 6, a second feed pipe 7, and a blower 81. The second feed pipe 7 is vertically arranged and communicates with the top discharge end of the first feed pipe 2. A mounting box 82 is installed on the top of one of the movable seats 3, and the blower 81 is installed inside the mounting box 82. When the viewing glass 44 is pressed against the sealing gasket 22, the blowing end of the blower 81 is exactly connected to the second feed pipe 7. The blower 81 is used to spray air laterally into the second feed pipe 7. The separation chamber 6 is installed on the side of the second feed pipe 7 away from the blower 81 and is connected to it. The other movable seat 3 is located below the separation chamber 6. A discharge pipe 61 is installed at the bottom of the separation chamber 6, and the discharge pipe 61 is located at the end of the separation chamber 6 away from the second feed pipe 7. The discharge pipe 61 is bolted to the mounting frame 1. A conveyor belt 62 is also installed inside the separation chamber 6. The input end of the conveyor belt 62 is located near the feed inlet of the separation chamber 6, and the output end of the conveyor belt 62 is located near the discharge outlet of the separation chamber 6.

[0041] The top of the separation chamber 6 is connected to a dust collection box 9, which can be connected to environmental dust removal equipment. A filter screen 91 is installed at the air inlet end of the dust collection box 9, i.e., the bottom of the dust collection box 9. A scraping assembly 92 is also installed at the bottom of the dust collection box 9, located below the filter screen 91. The scraping assembly 92 is used to scrape impurities adsorbed on the filter screen 91 onto the conveyor belt 62. The scraping assembly 92 can be a servo drive unit and a scraper. A connecting frame is installed at the bottom of the dust collection box 9, on which the servo drive unit is mounted. The lead screw of the servo drive unit is rotatably connected to the connecting frame, and the nut seat of the servo drive unit is slidably connected to the connecting frame. The scraper is mounted on the nut seat of the servo drive unit, and one side of the scraper contacts the filter screen 91.

[0042] The implementation principle of this application embodiment is as follows: the visual recognition device can accurately identify light impurities in the tobacco leaves, and combined with the blowing air manifold 81, it can achieve point-to-point removal. The impurities enter the separation chamber 6 for centralized collection under the action of airflow. The conveyor belt 62 can promptly transport the impurities in the separation chamber 6 to the discharge pipe 61 for discharge, avoiding the accumulation and retention of impurities in the separation chamber 6, thereby ensuring the stable operation of the impurity removal system.

[0043] The vertical and horizontal arrangement of the discharge pipe 61, the separation chamber 6, and the first feed pipe 2 makes full use of the space below the separation chamber 6, which can serve as an installation and movement area for a movable seat 3, improving the compactness of the equipment structure and the space utilization rate. The blowing air bag 81 is installed in the mounting box 82 on another movable seat 3, which enables it to move synchronously with the movable seat 3 without the need for an additional independent fixed support. This not only simplifies the structure but also facilitates the disassembly and maintenance of the blowing air bag 81. In particular, when cleaning the viewing glass 44, the blowing air bag 81 can be cleaned at the same time, improving the integration and maintainability of the whole machine and helping to improve the operating efficiency and overall stability of the equipment.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A visual recognition device, characterized in that: The device includes a first feed tube (2) and an optical housing (4). The optical housing (4) houses a light source assembly (42) and a camera (43). The first feed tube (2) has a first identification window (21) on one side facing the optical housing (4). The first feed tube (2) has a sealing gasket (22) along the outline of the first identification window (21). The optical housing (4) has a second identification window (41) on one side facing the first feed tube (2). A viewing glass (44) is installed inside the second identification window (41). The viewing glass (44) faces the first identification window (21). The optical housing (4) moves closer to / away from the first feed tube (2) via a drive unit (5). In the working state, the viewing glass (44) is pressed against the sealing gasket (22), and the viewing glass (44) covers the first identification window (21).

2. The visual recognition device according to claim 1, characterized in that: The optical housing (4) is connected to a movable base (3), the interior of which is a cavity structure for arranging the cable bundles of the light source assembly (42) and the camera (43), and the driving component (5) is connected to the movable base (3).

3. The visual recognition device according to claim 2, characterized in that: There are two optical housings (4) and two movable seats (3). The first feed tube (2) is located between the two movable seats (3). The first identification window (21) is provided on both sides of the first feed tube (2).

4. A photoelectric impurity removal device, characterized in that: The visual recognition device according to claim 3 further includes a separation chamber (6), a second feed pipe (7), and a blower (81). The second feed pipe (7) is connected to the first feed pipe (2) and is vertically arranged. The blower (81) is installed on one side of the second feed pipe (7) and is used to spray air laterally into the second feed pipe (7). The separation chamber (6) is installed on the side of the second feed pipe (7) away from the blower (81) and is connected to it.

5. The photoelectric impurity removal device according to claim 4, characterized in that: The bottom of the separation chamber (6) is connected to a discharge pipe (61), and a conveyor belt (62) is installed inside the separation chamber (6).

6. The photoelectric impurity removal device according to claim 5, characterized in that: The discharge pipe (61) is installed at the end of the separation chamber (6) away from the second feed pipe (7). The first feed pipe (2) is vertically arranged. The second feed pipe (7) is connected to the top of the first feed pipe (2). One of the movable seats (3) is located below the separation chamber (6). The top of the other movable seat (3) is equipped with an installation box (82). The blowing air bag (81) is installed in the installation box (82). When the visible glass (44) and the sealing gasket (22) are pressed together, the blowing end of the blowing air bag (81) is exactly connected to the second feed pipe (7).

7. The photoelectric impurity removal device according to any one of claims 4-6, characterized in that: The separation chamber (6) is connected to a dust removal box (9).

8. The photoelectric impurity removal device according to claim 7, characterized in that: The dust collector (9) is equipped with a filter screen (91) at the air inlet end, and a scraper assembly (92) is also installed at the air inlet end of the dust collector (9). The scraper assembly (92) is used to scrape the impurities adsorbed on the filter screen (91) off to the separation chamber (6).

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