A belt conveyor material blockage warning and processing device

Abstract

The present invention discloses a device for warning and treating material blockage of a belt conveyor. A laser rangefinder is installed on the top of the discharge hood. The laser rangefinder is electrically connected to an arithmetic unit, the arithmetic unit is electrically connected to a PLC controller, a pneumatic slide is electrically connected to the PLC controller, and the pneumatic slide is connected to a movable door; the PLC controller controls the pneumatic slide according to the electrical signal of the arithmetic unit, thereby controlling the opening and closing of the movable door; an overload current detector of the belt conveyor motor is installed at the belt conveyor motor, the overload current detector of the belt conveyor motor is electrically connected to the PLC controller, and the belt conveyor motor is electrically connected to the PLC controller. The technical content disclosed by the present invention, the setting of two warning heights of the laser rangefinder and the installation of the overload current detector of the belt conveyor provide a double guarantee for preventing material blockage. The introduction of the pneumatic slide and the movable door effectively solves the problems of a small open area of the blanking hood and limited internal space.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette manufacturing equipment, and more specifically, to a belt conveyor material blockage warning and processing device. Background Art

[0002] In the current production line of the silk reeling workshop, belt conveyors are widely used to transport tobacco materials such as tobacco leaves, tobacco stems, and cut tobacco, and are one of the main equipment connecting each process. In the actual production process, due to uneven incoming material flow, large pieces of materials or sundries mixed in the incoming materials, and non-standard operations of on-site workers, etc., material blockage often occurs at the discharge hood of the belt conveyor. To prevent material blockage, the traditional method is for on-site workers to conduct regular inspections. However, due to the large number of belt conveyors and most of them being located at high places and not easy to observe, the material blockage problem cannot be discovered by the workers in time. At the same time, after material blockage occurs, since the open area of the discharge hood is small and the internal space is limited, it increases the difficulty for workers to clean up the accumulated materials. It is time-consuming, laborious and unsafe during cleaning. Once material blockage occurs, the cigarette production line will stop and the material supply will be interrupted, which not only affects the continuity of production but also affects the process indicators, thus affecting the product quality.

[0003] Therefore, how to provide a belt conveyor material blockage warning and processing device has become a technical problem urgently to be solved in this field. Summary of the Invention

[0004] The purpose of the present invention is to provide a belt conveyor material blockage warning and processing device.

[0005] According to the present invention, there is provided a belt conveyor material blockage warning and processing device, including a laser rangefinder, an arithmetic unit, a PLC controller, and a pneumatic slide;

[0006] The laser rangefinder is installed on the top of the discharge hood, the laser rangefinder is electrically connected to the arithmetic unit, the arithmetic unit is electrically connected to the PLC controller, the pneumatic slide is electrically connected to the PLC controller, and the pneumatic slide is connected to a movable door; the PLC controller controls the pneumatic slide according to the electrical signal of the arithmetic unit, thereby controlling the opening and closing of the movable door.

[0007] Optionally, the device further includes: an audible and visual alarm device;

[0008] The audible and visual alarm device is electrically connected to the PLC controller.

[0009] Optionally, the device further includes: an overload current detector for the belt conveyor motor;

[0010] The overload current detector of the belt conveyor motor is installed at the belt conveyor motor. The overload current detector of the belt conveyor motor is electrically connected to the PLC controller, and the belt conveyor motor is electrically connected to the PLC controller.

[0011] Optionally, the device further includes: a transparent observation window;

[0012] The transparent observation window is opened at the front lower part of the discharge cover of the belt conveyor.

[0013] Optionally, there are 3 pairs of the laser rangefinders.

[0014] Optionally, the 3 pairs of laser rangefinders are installed linearly at equal intervals along the top of the discharge cover, and are respectively located at the left, middle and right positions of the top of the discharge cover.

[0015] Optionally, a compressed air blowing air pipe is provided at the probe of the laser rangefinder.

[0016] Optionally, the pneumatic sliding table, also called a sliding table cylinder, is driven by compressed air, and the rising and falling of the sliding block driving the moving valve are realized through the combined transmission of precision ball bearings and linear slide rails.

[0017] Optionally, the arithmetic unit sets two warning heights, named the first warning height and the second warning height respectively. When the first warning height is triggered, the PLC controller controls the start of the sound and light alarm device, and the pneumatic sliding table drives the moving valve to rise along the slide rail so as to quickly discharge the accumulated materials. Subsequently, if the laser rangefinder detects that the height of the accumulated materials returns to the normal level, the PLC controller controls the pneumatic sliding table to drive the moving valve to automatically descend and shuts down the sound and light alarm device;

[0018] If the height of the accumulated materials continues to increase and triggers the second warning height, and at the same time the overload current detector of the belt conveyor motor detects an abnormal current of the belt conveyor motor, the PLC controller promptly shuts down the belt conveyor motor.

[0019] According to the technical content disclosed by the present invention, the following beneficial effects are achieved: By means of automatic control and the introduction of a sound and light alarm device, the possibility of blockage of the belt conveyor is effectively reduced, and equipment damage and maintenance caused by blockage are avoided. While improving production efficiency, the labor intensity of the staff is reduced. The setting of two warning heights of the laser rangefinder and the installation of the overload current detector of the belt conveyor provide a double guarantee for preventing blockage. The compressed air spray holes are attached to the laser rangefinder, which not only cleans the probe of the laser rangefinder but also effectively reduces the occurrence of misjudgment behavior of the laser rangefinder. The introduction of the pneumatic sliding table and the moving valve effectively solves the problems of the small open area of the blanking cover and the limited internal space.

[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Description of the Drawings

[0021] The drawings incorporated in and forming a part of this specification illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 Schematic diagram of a belt conveyor material blockage warning processing device provided according to an embodiment;

[0023] Figure 2 Overall structure diagram of the discharge hood in the case where the valve is closed provided according to an embodiment;

[0024] Figure 3 Overall structure diagram of the discharge hood in the case where the valve is open provided according to an embodiment;

[0025] Figure 4 Schematic diagram of the positions of the laser rangefinder and the compressed air nozzle provided according to an embodiment.

[0026] Description of the reference numerals in the drawings: 1 - laser rangefinder, 1-1 - laser rangefinder body, 1-2 - compressed air blowing air pipe, 2 - discharge hood, 3 - transparent observation window, 4 - pneumatic slide, 5 - moving valve, 6 - belt conveyor motor, 7 - overload current detector, 8 - material baffle, 9 - belt. Detailed Embodiments

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or its use.

[0029] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered as part of the specification.

[0030] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0031] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0032] According to the present invention, as Figure 1 , Figure 2 and Figure 3 shown, a belt conveyor material blockage warning and processing device is provided, including a laser rangefinder 1, an arithmetic unit, a PLC controller, a pneumatic slide 4, a sound and light alarm device, an overload current detector 7 of the belt conveyor motor, and a transparent observation window 3, as well as a material baffle 8 and a belt 9;

[0033] Three pairs of the laser rangefinders 1 are provided, and the three pairs of the laser rangefinders 1 are linearly installed at equal intervals along the top of the discharge hood 2, and are respectively located at the left, middle and right positions of the top of the discharge hood 2, and are used to quickly detect the stacking height of the tobacco material directly below the discharge hood 2. As Figure 4 shown, the laser rangefinder 1 includes a laser rangefinder body 1-1 and a compressed air blowing air pipe 1-2. A compressed air blowing air pipe 1-2 is provided at the probe of the laser rangefinder body 1-1, and is used to clean the probe of the laser rangefinder to prevent the occurrence of misjudgment behavior. The laser rangefinder 1 is electrically connected to the arithmetic unit, and the arithmetic unit is used to process the signal transmitted by the laser rangefinder 1. The arithmetic unit is electrically connected to the PLC controller, the pneumatic slide 4 is electrically connected to the PLC controller, and the pneumatic slide 4 is connected to the moving valve 5; the PLC controller controls the pneumatic slide 4 according to the electrical signal of the arithmetic unit, so as to control the opening and closing of the moving valve 5; the sound and light alarm device is electrically connected to the PLC controller; the overload current detector 7 of the belt conveyor motor is installed at the belt conveyor motor 6 as a double guarantee for material blockage warning, and the overload current detector 7 of the belt conveyor motor is electrically connected to the PLC controller, and the belt conveyor motor 6 is electrically connected to the PLC controller; the PLC controller is used to receive signals from the arithmetic unit and the overload current detector 7 of the belt conveyor motor and make responses according to the signals; the transparent observation window 3 is opened at the front lower part of the discharge hood of the belt conveyor, and the setting of the transparent observation window 3 facilitates on-site staff to observe the situation of the tobacco material passing through the blanking hood; the pneumatic slide 4, also called a slide cylinder, is driven by compressed air, and the slider drives the moving valve to rise and fall through the combination drive of precision ball bearings and linear slide rails.

[0034] Specific implementation

[0035] The arithmetic unit is provided with two warning heights, named the first warning height and the second warning height respectively. The specific height values can be set according to the actual production situation. When the first warning height is triggered, the PLC controller controls the start of the sound and light alarm device, and the pneumatic slide table 4 drives the movable valve 5 to rise along the slide rail so as to quickly discharge the accumulated materials. Subsequently, if the laser rangefinder 1 detects that the height of the accumulated materials returns to the normal level, the PLC controller controls the pneumatic slide table 4 to drive the movable valve 5 to automatically descend and turn off the sound and light alarm device;

[0036] If the height of the accumulated materials continues to increase and triggers the second warning height, and at the same time the overload current detector 7 of the belt conveyor motor detects that the current of the belt conveyor motor 6 is abnormal, the PLC controller promptly shuts down the belt conveyor motor 6, and resumes production after the on-site staff checks and processes it; The movable valve of the discharge hood is provided with a manual switch and can also be manually opened or closed.

[0037] In summary, through automatic control and the introduction of a sound and light alarm device, the possibility of blockage of the belt conveyor is effectively reduced, and equipment damage and maintenance caused by blockage are avoided. While improving production efficiency, the labor intensity of the staff is reduced. The setting of the two warning heights of the laser rangefinder and the installation of the overload current detector of the belt conveyor provide double guarantees for preventing blockage. The laser rangefinder is attached with a compressed air spray hole, which not only cleans the probe of the laser rangefinder but also effectively reduces the occurrence of misjudgment behavior of the laser rangefinder. The introduction of the pneumatic slide table and the movable valve effectively solves the problems of the small open area and limited internal space of the blanking hood.

[0038] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A belt conveyor material blockage early warning and processing device, characterized in that, Including: Laser rangefinder, arithmetic unit, PLC controller, audible and visual alarm device, and pneumatic slide table; The laser rangefinder is installed on the top of the discharge hood, the laser rangefinder is electrically connected to the arithmetic unit, the arithmetic unit is electrically connected to the PLC controller, the pneumatic slide table is electrically connected to the PLC controller, and the pneumatic slide table is connected to the movable valve; The PLC controller controls the pneumatic slide table according to the electrical signal of the arithmetic unit, so as to control the opening and closing of the movable valve; The device also includes: an overload current detector for the belt conveyor motor; The overload current detector for the belt conveyor motor is installed at the belt conveyor motor, the overload current detector for the belt conveyor motor is electrically connected to the PLC controller, and the belt conveyor motor is electrically connected to the PLC controller; There are 3 pairs of the laser rangefinders; The arithmetic unit sets two warning heights, named the first warning height and the second warning height respectively. When the first warning height is triggered, the PLC controller controls the audible and visual alarm device to start, and the pneumatic slide table drives the movable valve to rise along the slide rail so as to quickly discharge the accumulated materials. Subsequently, if the laser rangefinder detects that the accumulated material height returns to the normal level, the PLC controller controls the pneumatic slide table to drive the movable valve to automatically descend and turn off the audible and visual alarm device; If the accumulated material height continues to increase and triggers the second warning height, and at the same time the overload current detector of the belt conveyor motor detects that the current of the belt conveyor motor is abnormal, the PLC controller timely shuts down the belt conveyor motor.

2. The belt conveyor blockage warning processing device according to claim 1, wherein The audible and visual alarm device is electrically connected to the PLC controller.

3. The belt conveyor material blockage warning processing device according to claim 1, wherein The device also includes: a transparent observation window; The transparent observation window is opened at the front lower part of the discharge hood of the belt conveyor.

4. The belt conveyor material blocking warning processing device according to claim 1, wherein, The 3 pairs of laser rangefinders are installed linearly at equal intervals along the top of the discharge hood, and are respectively located at the left, middle and right positions of the top of the discharge hood.

5. The belt conveyor material blockage warning processing device according to claim 4, wherein A compressed air blowing air pipe is provided at the probe of the laser rangefinder.

6. The belt conveyor material blockage warning processing device according to claim 5, characterized in that, The pneumatic slide table is driven by compressed air, and the combination drive of precision balls and linear slide rails is used to realize the rising and falling of the slider driving the movable valve.

Images