Conveyor belt oil product collection device, oil product collection method

Abstract

The application discloses a conveying belt oil product collecting device and an oil product collecting method, and relates to the field of automobile part manufacturing.The technical scheme is characterized in that the oil stain detection assembly is used to monitor the conveying belt oil stain index and the residual oil state of the oil absorption roller in real time, and the controller is used to close-loop adjust the pressing force of the oil absorption roller, the differential speed and the acting angle of the oil scraping plate, so that the adaptive cleaning of the oil stain is realized.The system increases the acting force and the relative speed when the oil stain is serious, reduces the energy consumption when the oil stain is light, effectively improves the cleaning efficiency, reduces the mechanical wear and prolongs the service life of the part.Through the cooperative adjustment of multiple key process parameters, the oil stain with different viscosity and thickness can be adapted, and the broad-spectrum, efficient and fine cleaning is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts manufacturing, in particular to a conveying belt oil collecting device and an oil collecting method. BACKGROUND

[0002] In the automobile parts manufacturing production line, the conveying belt is the core component connecting each production unit to realize the automatic flow of materials. In the production process, the oil, coolant and other liquids attached to the surface of the workpiece will inevitably transfer to the surface of the conveying belt and gradually accumulate. This pollution brings multiple problems: first, it will pollute the clean workpieces in the subsequent process, affecting the final quality of the product; second, it may cause slipping between the conveying belt and the driving roller, affecting the transmission accuracy and production stability; third, the dripping oil stains will pollute the workshop environment, pose a safety hazard, and increase the difficulty and cost of equipment maintenance.

[0003] To reduce damage to the conveying belt, in the prior art, a roller made of porous oil-absorbing material is used to absorb oil stains through rolling contact with the conveying belt, and then the oil stains are scraped off the roller by a scraper and collected into an oil pan by gravity. However, its cleaning capacity completely depends on the passive adsorption of the material, and the efficiency is greatly reduced for high-viscosity oil or in low-temperature environments. The performance of the roller will decrease sharply after the oil absorption is saturated, and it cannot selectively handle oil-water mixtures. The fixed contact pressure cannot guarantee stable and thorough cleaning effect. SUMMARY

[0004] The purpose of the present application is to provide a conveying belt oil collecting device, which realizes efficient, energy-saving, broad-spectrum and low-wear oil stain cleaning by real-time monitoring of the oil stain index and the residual oil state of the oil-absorbing roller, and cooperatively adjusting the pressing force, differential speed and scraping plate angle, improves the oil collecting efficiency and prolongs the service life of the device.

[0005] The above technical purpose of the present application is achieved by the following technical scheme:

[0006] A conveying belt oil collecting device is arranged on a conveying belt, and further comprises:

[0007] a support;

[0008] an oil-absorbing roller rotatably connected to the support;

[0009] a linear lifting mechanism connected to the oil-absorbing roller for driving the oil-absorbing roller to move in the vertical direction to adjust the pressing force between the oil-absorbing roller and the conveying belt;

[0010] a differential speed driving mechanism drivingly connected to the oil-absorbing roller for driving the oil-absorbing roller to rotate at an adjustable differential speed;

[0011] The oil scraping assembly comprises an oil scraping plate and an angle adjusting mechanism; the oil scraping plate is arranged on the angle adjusting mechanism and is adapted to the outer surface of the oil absorption roller to scrape off oil products;

[0012] An oil receiving tray is arranged below the oil scraping assembly;

[0013] An oil stain detection assembly is arranged to detect the oil stain index of the conveying belt and the residual oil state of the oil absorption roller;

[0014] A controller is electrically connected to the linear lifting mechanism, the differential speed driving mechanism and the angle adjusting mechanism; the controller can adjust the pressing force, the differential speed and the acting angle between the oil scraping plate and the oil absorption roller based on the detection signal of the oil stain detection assembly.

[0015] Further, the controller is configured to:

[0016] When the oil stain index is detected to increase, the pressing force and the differential speed are simultaneously increased;

[0017] When the residual oil state of the oil absorption roller is detected to indicate that the saturation degree increases, the acting angle between the oil scraping plate and the oil absorption roller is increased;

[0018] When the real-time running speed of the conveying belt is detected to change, the rotating speed of the differential speed driving mechanism is adjusted to keep the differential speed between the oil absorption roller and the conveying belt within a preset target range.

[0019] Further, the controller is configured to:

[0020] A sliding groove is arranged on the support and extends in the height direction;

[0021] A first rotating shaft is rotatably mounted in the sliding groove and can slide along the extension direction of the sliding groove;

[0022] The oil absorption roller is coaxially arranged on the first rotating shaft, the differential speed driving mechanism is arranged on the first rotating shaft and slides with the first rotating shaft; the linear lifting mechanism is mounted on the support and acts on the first rotating shaft to drive the first rotating shaft to move along the extension direction of the sliding groove.

[0023] Further, the angle adjusting mechanism comprises:

[0024] A swing support;

[0025] A second rotating shaft is rotatably connected to the swing support; the oil scraping plate is arranged on the second rotating shaft and rotates with the second rotating shaft;

[0026] A linear telescopic mechanism is hingedly connected to the swing bracket and the oil scraping plate at two ends, and is driven by the controller to drive the oil scraping plate to rotate around the axis of the second rotating shaft by changing the telescopic length, so as to adjust the action angle.

[0027] Alternatively, the angle adjusting mechanism comprises:

[0028] A cross slide is fixed to the bracket.

[0029] A swing bracket is installed on the cross slide.

[0030] A second rotating shaft is rotatably connected to the swing bracket, and the oil scraping plate is fixed to the second rotating shaft.

[0031] A linear telescopic mechanism is connected to the swing bracket at one end and to the oil scraping plate at the other end.

[0032] The controller drives the linear telescopic mechanism to adjust the rotation angle of the oil scraping plate around the second rotating shaft, and the controller also drives the cross slide to enable the oil scraping plate to move along two directions of the cross slide with the swing bracket while rotating with the second rotating shaft.

[0033] Further provided, the oil stain detection assembly comprises at least one optical sensor for detecting the oil stain index and one capacitive sensor for detecting the residual oil state; wherein the optical sensor determines the oil stain index by detecting the change of light reflectivity or transmissivity or fluorescence on the surface of the conveyor belt.

[0034] Further provided, the oil collecting device further comprises an oil collecting bottle, and an oil guide pipe is arranged between the oil collecting bottle and the oil receiving disc; a liquid level sensor is arranged in the oil collecting bottle, and the liquid level sensor is electrically connected to the controller to send an alarm signal when the oil reaches a preset liquid level.

[0035] Further provided, the linear lifting mechanism comprises any one of an electric push rod, a lead screw lifting mechanism, and a pneumatic cylinder; and the differential drive mechanism comprises a stepper motor.

[0036] Another object of the present application is to provide an oil collecting method of the conveyor belt oil collecting device, comprising the following steps:

[0037] S1: Real-time detection of the oil stain index of the conveyor belt and the residual oil state of the oil absorbing roller by using the oil stain detection assembly.

[0038] S2: The controller adjusts the process parameters based on the signals detected in step S1, the process parameters including the pressing force between the oil absorbing roller and the conveyor belt, the differential speed between the oil absorbing roller and the conveyor belt, and the action angle between the oil scraping plate and the oil absorbing roller.

[0039] Step S2 specifically comprises the following sub-steps:

[0040] S21: When the oil stain index is detected to increase, the pressing force and the differential speed are simultaneously increased;

[0041] S22: When the residual oil state of the oil absorption roller indicates that the saturation degree increases, the acting angle is increased;

[0042] S23: When the real-time running speed of the conveying belt is detected to change, the rotating speed of the differential speed driving mechanism is adjusted to keep the differential speed within the preset target range.

[0043] In summary, the present application has the following beneficial effects:

[0044] Firstly, by setting the oil stain detection assembly, the multi-dimensional adjustable actuator and the controller for closed-loop connection of the two, the pressing force and the differential speed can be accurately adjusted as needed by real-time detection of the oil stain index. When the oil stain is serious, the system automatically increases the acting force and the relative speed to ensure the cleaning effect; while the oil stain is lighter or clean, the energy consumption output is automatically reduced. This self-adaptive working mode discards the mode of continuous maximum power operation of the traditional device, greatly reduces unnecessary energy consumption, significantly slows down the mechanical wear of the oil absorption roller and the conveying belt itself, and prolongs the service life of the core components.

[0045] By synergistically adjusting the three key process parameters of the pressing force, the differential speed and the acting angle, fine treatment of different types of oil stains is realized. The system can combine different parameter strategies according to the viscosity, thickness and other characteristics of the pollutants, and its cleaning spectrum and thoroughness far exceed that of simple devices that can only adjust in a single dimension. The present application detects the residual oil state of the oil absorption roller and adjusts the acting angle of the oil scraping assembly accordingly, giving the system the ability of self-state perception and adjustment.

[0046] Secondly, the control logic defined in the present application, i.e. simultaneously increasing the pressing force and the differential speed when the oil stain index is detected to increase, establishes a synergistic cleaning model. This strategy does not simply increase a single parameter, but couples the pressing force that enhances physical contact with the differential speed that improves mechanical peeling ability. This combination can more effectively deal with complex oil stains that are viscous or thick, and compared with systems that only adjust a single parameter, its cleaning thoroughness and adaptability to harsh working conditions are significantly improved, achieving a better cleaning effect.

[0047] The present application controls the residual oil state of the oil absorption roller and the action angle of the oil scraping plate in a closed loop, and constructs a self-adjusting and performance recovery mechanism. It is equivalent to separate the cleaning task from the efficiency state of the cleaning tool and manage them independently. By actively increasing the oil scraping angle when the roller tends to be saturated, the system can recover its oil absorption capacity in real time, fundamentally solving the inherent defect of the traditional device that the overall performance decays over time due to the saturation of the cleaning medium. This ensures that the device can maintain the best working state for a long time, greatly enhancing the stability and consistency of operation.

[0048] The present application dynamically correlates the rotational speed of the differential drive mechanism with the real-time running speed of the conveying belt, ensuring that the differential rate between the two is always stable. This control strategy completely decouples the cleaning efficiency of the device from the running tempo of the production line. This means that no matter whether the production line is running at high speed, crawling at low speed, or changing speed, the core physical action of the device on the oil stain, i.e. the relative speed difference, is always constant at the optimal value. This ensures that the cleaning effect is highly consistent and predictable under any production condition, providing reliable protection for the quality stability of the entire production process.

[0049] Thirdly, in the present application, the first rotating shaft carrying the oil absorption roller and the differential drive mechanism is placed in a sliding groove extending in the height direction for sliding. This design takes advantage of the rigid guide characteristics of the sliding groove to provide precise linear guidance for the entire core motion component. It solves the problems of tilting, vibration or displacement deviation that may exist in traditional lifting mechanisms due to uneven stress or driving torque. Secondly, the differential drive mechanism is integrated with the oil absorption roller on the slidable first rotating shaft, forming a whole motion module. This not only significantly improves the response speed and accuracy of differential rate control, but also makes the overall structure more compact and rigid, reduces potential failure points, and improves the long-term operation reliability of the device.

[0050] Fourthly, in the present application, by installing the swing bracket on a cross slide, a two-degree-of-freedom adjustment system with angle adjustment and two-dimensional position translation capability is constructed, achieving high adaptability and precise matching to complex working conditions. The introduction of the cross slide fundamentally expands the effective working range of the oil scraping plate and eliminates cleaning dead angles. Compared with the traditional scheme with fixed axial position, the oil scraping assembly of the present application can be freely positioned within the length and height range of the oil absorption roller, which avoids the blind area of oil scraping that may be caused by fixed installation position. By ensuring full coverage cleaning of the roller surface, the overall oil recovery efficiency is directly improved.

[0051] Further, the direct driving of the oil scraping plate by the linear extension mechanism ensures quick response and high precision of the action angle adjustment. In combination with the translation function provided by the cross slide, the oil scraping plate can actively adapt to and compensate for, for example, non-uniform wear of the blade edge of the oil scraping plate, changes in the local oil stain distribution on the surface of the oil absorption roller, and slight positional deviations generated during operation of the equipment. This multi-dimensional dynamic matching capability ensures that the oil scraping plate can maintain the best contact line with the outer surface of the roller under various actual working conditions, thereby achieving a continuous, stable, and efficient oil scraping effect. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is a schematic diagram of the three-dimensional structure of the conveyor belt oil product collection device;

[0053] Figure 2 is a schematic diagram of the side view structure of the conveyor belt oil product collection device;

[0054] Figure 3 is an enlarged schematic diagram of A of Figure 1 ;

[0055] Figure 4 is a structural schematic diagram of the oil absorption roller, the chute, and the linear lifting mechanism;

[0056] Figure 5 is a structural schematic diagram of the oil scraping plate, the cross slide, and the linear extension mechanism.

[0057] In the drawings, 10, frame; 20, support;

[0058] 100, conveyor belt; 200, driving device;

[0059] 300, oil absorption roller; 301, first rotating shaft; 302, chute; 303, linear lifting mechanism; 304, differential drive mechanism;

[0060] 400, oil receiving tray;

[0061] 500, oil scraping plate; 501, second rotating shaft; 502, oil collecting bottle; 503, swing support; 504, cross slide; 505, linear extension mechanism; 506, liquid level sensor; 510, oil guide pipe; 520, angle adjustment mechanism;

[0062] 600, oil stain detection assembly; 601, optical sensor; 602, capacitive sensor; 700, controller. DETAILED DESCRIPTION

[0063] The present application will be further described in detail below in conjunction with the drawings.

[0064] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0065] A conveyor belt oil collecting device is installed on the lower side of a conveyor belt 100, which has a rack 10 and a driving device 200, which is a servo motor. The conveyor belt 100 oil collecting device comprises a bracket 20, which is used as the bearing and mounting base of the device, and is fixedly arranged at a relative position of the conveyor belt 100, such as a downstream position of the conveyor belt 100.

[0066] A suction oil cylinder 300 is rotatably connected to the bracket 20, which extends along the width direction of the conveyor belt 100 and is arranged opposite to the surface of the conveyor belt 100, and is used to contact the conveyor belt 100 during operation to adsorb the oil on the surface of the conveyor belt 100. The bracket 20 also has a linear lifting mechanism 303, which is connected to the suction oil cylinder 300 and vertically arranged on the bracket 20, and is used to drive the suction oil cylinder 300 to lift along the vertical direction, so as to adjust the pressing force between the suction oil cylinder 300 and the conveyor belt 100.

[0067] A differential drive mechanism 304 is drivingly connected to the shaft end of the suction oil cylinder 300, which is coaxially arranged with the suction oil cylinder 300, and is used to drive the suction oil cylinder 300 to rotate relative to the conveyor belt 100 at an adjustable differential speed. An oil scraping assembly is arranged at the side position or downstream position of the suction oil cylinder 300, which comprises an oil scraping plate 500 and a matching angle adjusting mechanism 520, and the cutting edge of the oil scraping plate 500 is adapted to the outer circumferential surface of the suction oil cylinder 300, and is used to scrape off the oil adsorbed thereon. An oil collecting disc 400 is also provided, which is fixedly arranged below the oil scraping assembly and is located opposite to the lower side area of the suction oil cylinder 300, and is used to receive and collect the oil scraped off by the oil scraping plate 500.

[0068] The device also comprises an oil stain detection assembly 600 and a controller 700. The oil stain detection assembly 600 is used to monitor the oil stain index of the surface of the conveying belt 100 and the residual oil state of the oil absorption roller 300 in real time. The controller 700 serves as the control core of the entire device, and is connected with the linear lifting mechanism 303, the differential drive mechanism 304 and the angle adjusting mechanism 520 through electrical signals, and receives detection signals from the oil stain detection assembly 600. During operation, the controller 700 can adaptively adjust the pressing force acting on the conveying belt 100, the differential speed of the oil absorption roller 300 and the acting angle of the oil scraping plate 500 as a closed-loop feedback system according to the real-time detection signals, so as to always maintain the best cleaning performance and system state.

[0069] In order to realize the lifting of the oil absorption roller 300, a sliding groove 302 extending in the vertical direction is arranged on the support 20, which provides guidance for the core moving part.

[0070] The first rotating shaft 301 is installed in the sliding groove 302 through a slidable bearing seat, which can freely rotate around its center line and linearly slide along the guide rail of the sliding groove 302. The oil absorption roller 300 is coaxially fixed on the first rotating shaft 301, and the differential drive mechanism 304 is drivingly connected to the first rotating shaft 301, so as to form an integral moving module with the oil absorption roller 300 and the first rotating shaft 301.

[0071] The linear lifting mechanism 303 is fixed on the support 20, and its output end acts on the bearing seat of the first rotating shaft 301 or its extension structure. By driving the linear lifting mechanism 303, the vertical position of the entire moving module along the sliding groove 302 can be accurately controlled, so as to realize the adjustment of the pressing force of the oil absorption roller 300.

[0072] In order to realize the precise adjustment of the acting angle of the oil scraping plate 500, the application provides a specific angle adjusting mechanism 520. The angle adjusting mechanism 520 comprises a swing support 503, which is installed at a corresponding position of the support 20 and is used to support and guide the rotation of the oil scraping plate 500.

[0073] The swing support 503 is rotatably connected with a second rotating shaft 501, which is arranged in the transverse direction. The second rotating shaft 501 is fixedly installed with the oil scraping plate 500 on its outer surface, so that the oil scraping plate 500 can rotate synchronously with the second rotating shaft 501, thereby changing the contact posture with the outer surface of the oil absorption roller 300.

[0074] The angle adjusting mechanism 520 further comprises a linear telescopic mechanism 505, one end of which is hinged to the swing bracket 503, and the other end is hinged to the back structure of the oil scraping plate 500. The linear telescopic mechanism 505 is driven by the controller 700, and by changing its telescopic length, it drives the oil scraping plate 500 to rotate around the axis of the second rotating shaft 501, so as to realize the precise adjustment of the acting angle between the oil scraping plate 500 and the oil absorption cylinder 300.

[0075] As an alternative embodiment of the angle adjusting mechanism 520, a cross slide 504 is fixed on the corresponding position of the bracket 20, which provides guiding support for the multi-directional movement of the oil scraping plate 500.

[0076] The cross slide 504 is provided with a swing bracket 503, which can move in two directions of the cross slide 504, thereby providing conditions for the precise position adjustment of the oil scraping plate 500 in horizontal and vertical directions.

[0077] The swing bracket 503 is rotatably connected with a second rotating shaft 501, and the oil scraping plate 500 is fixedly installed on the second rotating shaft 501, so that the oil scraping plate 500 can rotate with the second rotating shaft 501 to change the contact posture with the oil absorption cylinder 300.

[0078] The angle adjusting mechanism 520 further comprises a linear telescopic mechanism 505, one end of which is connected to the swing bracket 503, and the other end is connected to the oil scraping plate 500. The controller 700 drives the linear telescopic mechanism 505, which drives the oil scraping plate 500 to rotate around the axis of the second rotating shaft 501 by adjusting the telescopic length, thereby realizing the adjustment of the acting angle.

[0079] On this basis, the controller 700 can also drive the cross slide 504, so that the oil scraping plate 500 moves along the two directions of the cross slide 504 synchronously with the swing bracket 503 during rotation, thereby realizing the precise positioning of the oil scraping plate 500 while adjusting the angle, and ensuring the scraping effect with the oil absorption cylinder 300.

[0080] In order to realize the adjustable control of the pressing force between the oil absorption cylinder 300 and the conveying belt 100, the linear lifting mechanism 303 can adopt different types of driving devices 200, including electric push rods, screw lifting mechanisms or pneumatic cylinders. The linear lifting mechanism 303 drives the oil absorption cylinder 300 to move in the vertical direction through the connection with the oil absorption cylinder 300, thereby adjusting the contact pressure with the conveying belt 100.

[0081] In order to realize the controllable differential rotation of the oil absorption roller 300, the differential drive mechanism 304 is driven by a stepping motor. The stepping motor is in driving connection with the oil absorption roller 300, and can adjust the rotation speed of the oil absorption roller 300 according to the instruction of the controller 700, so that the preset differential speed between the oil absorption roller 300 and the conveying belt 100 is maintained. In the embodiment, the conveying speed of the conveying belt 100 can be directly obtained through the driving device 200.

[0082] In order to collect the scraped oil, the device is provided with an oil collecting bottle 502. The oil collecting bottle 502 is connected with the oil receiving disc 400 through an oil guide pipe 510, and the oil guide pipe 510 conveys the oil collected by the oil receiving disc 400 into the oil collecting bottle 502.

[0083] A liquid level sensor 506 is installed in the oil collecting bottle 502, and the liquid level sensor 506 is in electrical signal connection with the controller 700. When the oil level in the oil collecting bottle 502 reaches a preset height, the liquid level sensor 506 sends an alarm signal to the controller 700 to prompt the operator to clean or replace the oil.

[0084] In the embodiment, the oil stain detection assembly 600 includes an optical sensor 601 for detecting the oil stain index of the conveying belt 100 and a capacitive sensor 602 for detecting the residual oil state of the oil absorption roller 300, both of which are in electrical signal connection with the controller 700. The optical sensor 601 is installed on the bracket 20, and the detection head thereof faces the surface of the conveying belt 100. The optical sensor 601 utilizes the characteristics that the clean conveying belt 100 and the conveying belt 100 covered with oil stains have different optical responses to a specific light, and quantitatively calculates the current oil stain index by measuring the reflectivity or transmissivity or fluorescence change of the light on the surface of the conveying belt 100 in real time.

[0085] Here, different detection methods are described respectively.

[0086] Example one: detection method based on light reflectivity;

[0087] In the embodiment, the optical sensor 601 is specifically a set of reflective photoelectric detection system. The system includes a light source and a light receiver, which are installed side by side on the bracket 20, located upstream of the oil absorption roller 300, and jointly face the surface of the conveying belt 100 at a specific angle. The light source is usually a high-stability light-emitting diode, which is used to emit a light beam with constant intensity to the surface of the conveying belt 100. The light receiver is a photosensitive diode or a phototransistor, which is used to receive the light reflected from the surface of the conveying belt 100 and convert the intensity thereof into an electrical signal.

[0088] The calculation method of the oil stain index can include the following steps:

[0089] S1: Calibration of reference value. Align the optical sensor 601 to the clean surface of the conveyor belt 100, measure and record the reflected light intensity at this time, and define this value as the clean reference value R by the controller 700 clean , corresponding to an oil stain index of 0%.

[0090] S2: Set the saturated reference value. Determine the reflected light intensity when the surface of the conveyor belt 100 is completely covered with oil stains, and define this value as the saturated reference value R saturated , corresponding to an oil stain index of 100%.

[0091] S3: Real-time detection and calculation.

[0092] During operation, the light receiver continuously measures the real-time reflected light intensity R current , and the controller 700 calculates the normalized real-time oil stain index by the formula I oil =(∣R clean R current ∣ / ∣R clean R saturated ∣)×100%.

[0093] This method is suitable for most opaque conveyor belts 100 and has strong universality.

[0094] Example Two: Detection method based on light transmittance

[0095] This embodiment is suitable for conveyor belts 100 with semi-transparent or light-transmitting materials. In this embodiment, the optical sensor 601 is specifically a set of optical detection system. The system includes a light source and a light receiver, which are respectively installed on the upper and lower sides of the conveyor belt 100 and are accurately aligned. The light source is located below the conveyor belt 100 and emits a light beam with constant intensity upward; the light receiver is located above the conveyor belt 100 and is used to receive the remaining light after penetrating the conveyor belt 100.

[0096] The calculation method of the oil stain index can include the following steps:

[0097] S1: Calibration of reference value. Align the optical sensor 601 to the clean surface of the conveyor belt 100, measure and record the reflected light intensity at this time, and define this value as the clean reference value R by the controller 700 clean , corresponding to an oil stain index of 0%.

[0098] S2: Set the saturated reference value. Determine the reflected light intensity when the surface of the conveyor belt 100 is completely covered with oil stains, and define this value as the saturated reference value R saturated . Since the oil stains will block the light, the value of T saturated will be lower than T clean .

[0099] S3: Real-time detection and calculation.

[0100] When running, the light receiver continuously measures the real-time transmission light intensity T current , the controller 700 calculates the real-time oil stain index by the formula I oil = ((T clean T current ) / (T clean T saturated )) x 100%.

[0101] This method has small external stray light influence and high detection accuracy because the detection light path is perpendicular to the contaminant.

[0102] Example Three: Detection method based on fluorescence reaction

[0103] This example utilizes the characteristic that some industrial oil products will produce fluorescence reaction under specific light source. In this example, the optical sensor 601 is specifically a fluorescence detection system. The system includes an excitation light source of specific wavelength and a light receiver with filter, which are installed on the same side of the conveying belt 100. The excitation light source is usually ultraviolet LED, which is used to irradiate the surface of the conveying belt 100. A filter is installed in front of the light receiver, which can filter out the light of the excitation light source and only allow the specific color fluorescence generated by the oil to pass through.

[0104] The calculation method of the oil stain index can include the following steps:

[0105] S1: Calibration of reference value. Align the surface of the clean conveying belt 100, since the conveying belt 100 itself does not produce fluorescence, the fluorescence intensity signal received by the light receiver at this time is recorded by the controller 700 as the clean reference value F clean , which is close to zero.

[0106] S2: Set the saturation reference value. Determine the maximum fluorescence intensity generated when the surface of the conveying belt 100 is completely covered with oil stain, and define this value as the saturation reference value F max , which corresponds to an oil stain index of 100%.

[0107] S3: Real-time detection and calculation. When running, the light receiver continuously measures the real-time fluorescence intensity F current , and the controller 700 calculates the real-time oil stain index by the formula I oil = (F current / F max ) x 100%.

[0108] This method has strong specificity and can effectively distinguish oil stains from other common contaminants such as water stains.

[0109] In order to monitor the state of the cleaning tool itself, the capacitive sensor 602 is fixedly installed on the support 20, the sensing surface of which is close to the outer circumferential surface of the oil absorption roller 300 without direct contact, and the capacitive sensor 602 is also electrically connected with the controller 700. When the material of the oil absorption roller 300 changes from a dry state to a state of being full of oil, the dielectric constant will change significantly, and the capacitive sensor 602 detects the change of the dielectric constant to determine the residual oil saturation state of the roller, thereby providing a basis for the controller 700 to adjust the oil scraping assembly.

[0110] In order to realize efficient collection of oil stains on the conveying belt 100 and adaptive adjustment of the action of the oil scraping plate 500, the controller 700 is configured to adjust various process parameters according to the signals of the oil stain detection assembly 600.

[0111] When the oil stain detection assembly 600 detects an increase in the oil stain index on the surface of the conveying belt 100, the controller 700 simultaneously increases the pressing force between the oil absorption roller 300 and the conveying belt 100, and increases the rotational differential speed of the oil absorption roller 300, so as to enhance the collection efficiency of oil and ensure the cleanliness of the surface of the conveying belt 100.

[0112] When the oil stain detection assembly 600 monitors that the residual oil state of the oil absorption roller 300 shows an increase in saturation, the controller 700 adjusts the action angle between the oil scraping plate 500 and the oil absorption roller 300, so that the oil scraping plate 500 can more effectively scrape off the residual oil on the surface of the roller, thereby preventing the accumulation of oil stains from affecting the rotation of the roller and the oil collection effect.

[0113] When the real-time running speed of the conveying belt 100 changes, the controller 700 adjusts the rotational speed of the differential speed driving mechanism 304, so as to keep the differential speed between the oil absorption roller 300 and the conveying belt 100 within a preset target range, thereby ensuring the stability and continuity of the oil collection process and avoiding oil residue or wear of the conveying belt 100 caused by speed fluctuations.

[0114] The present application also provides a conveying belt 100 oil collection method for realizing efficient collection of oil and adaptive adjustment of the action of the oil scraping plate 500. First, the oil stain detection assembly 600 is used to monitor the oil stain index on the surface of the conveying belt 100 and the residual oil state of the oil absorption roller 300 in real time, and the collected signals are transmitted to the controller 700 through electrical signals.

[0115] Based on the detection signal, the controller 700 adjusts the process parameters of the oil collecting device, including the pressing force between the oil absorbing roller 300 and the conveying belt 100, the differential speed between the oil absorbing roller 300 and the conveying belt 100, and the action angle between the oil scraping plate 500 and the oil absorbing roller 300, to ensure the continuity and stability of the oil collecting process.

[0116] In the specific adjustment process, when the oil stain detection assembly 600 detects an increase in the oil stain index of the conveying belt 100, the controller 700 simultaneously increases the pressing force and the differential speed between the oil absorbing roller 300 and the conveying belt 100 to improve the oil collecting efficiency and ensure the cleanliness of the surface of the conveying belt 100.

[0117] When the residual oil state of the oil absorbing roller 300 is detected to show an increase in the saturation degree, the controller 700 increases the action angle between the oil scraping plate 500 and the oil absorbing roller 300, so that the oil scraping plate 500 can more effectively remove the residual oil on the surface of the roller, thereby preventing the accumulation of oil stains from affecting the rotation of the roller and the collecting effect.

[0118] When the real-time running speed of the conveying belt 100 changes, the controller 700 adjusts the rotating speed of the differential speed driving mechanism 304 to keep the differential speed between the oil absorbing roller 300 and the conveying belt 100 within the preset target range, thereby ensuring the stability of the oil collecting process and avoiding the residual oil or the wear of the conveying belt 100 caused by the speed fluctuation.

[0119] The above embodiments are only explanations of the present application and are not limitations of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, as long as the modifications are within the scope of the claims of the present application and are protected by the patent law.

Claims

1. A conveyor belt oil collection device, provided on a conveyor belt (100), characterized in that, Also comprising: a support (20); an oil absorption roller (300) rotatably connected to the support (20); a linear lifting mechanism (303) connected to the oil absorption roller (300) for driving the oil absorption roller (300) to move in the vertical direction to adjust the pressing force between the oil absorption roller (300) and the conveying belt (100); a differential speed driving mechanism (304) drivingly connected to the oil absorption roller (300) for driving the oil absorption roller (300) to rotate at an adjustable differential speed; an oil scraping assembly including an oil scraping plate (500) and an angle adjusting mechanism (520); the oil scraping plate (500) is arranged on the angle adjusting mechanism (520) and is adapted to the outer surface of the oil absorption roller (300) to scrape off oil; an oil receiving tray (400) arranged below the oil scraping assembly; an oil stain detection assembly (600) for detecting the oil stain index of the conveying belt (100) and the residual oil state of the oil absorption roller (300); a controller (700) electrically connected to the linear lifting mechanism (303), the differential speed driving mechanism (304) and the angle adjusting mechanism (520); the controller (700) can adjust the pressing force, the differential speed and the acting angle between the oil scraping plate (500) and the oil absorption roller (300) based on the detection signal of the oil stain detection assembly (600); the controller (700) is configured to: synchronously increase the pressing force and the differential speed when detecting an increase in the oil stain index; increase the acting angle between the oil scraping plate (500) and the oil absorption roller (300) when detecting that the residual oil state of the oil absorption roller (300) indicates an increase in saturation; adjust the rotating speed of the differential speed driving mechanism (304) to keep the relative differential speed between the oil absorption roller (300) and the conveying belt (100) within a preset target range when detecting a change in the real-time running speed of the conveying belt (100).

2. The conveyor belt fluid collection device of claim 1, wherein: Also comprising: a chute (302) arranged on the support (20) and extending in the height direction; a first rotating shaft (301) rotatably mounted in the chute (302) and capable of sliding along the extension direction of the chute (302); wherein the oil absorption roller (300) is coaxially arranged on the first rotating shaft (301), and the differential speed driving mechanism (304) is arranged on the first rotating shaft (301) to slide together with the first rotating shaft (301); the linear lifting mechanism (303) is mounted on the support (20) and acts on the first rotating shaft (301) to drive the first rotating shaft (301) to move along the extension direction of the chute (302).

3. The conveyor belt fluid collection apparatus of claim 1, wherein: the angle adjusting mechanism (520) comprises: a swing support (503); a second rotating shaft (501) rotatably connected to the swing support (503); the oil scraping plate (500) is arranged on the second rotating shaft (501) to rotate together with the second rotating shaft (501); A linear telescopic mechanism (505) is hinged at two ends to the swing bracket (503) and the oil scraping plate (500) respectively, and is driven by the controller (700) to drive the oil scraping plate (500) to rotate around the axis of the second rotating shaft (501) by changing the telescopic length, so as to adjust the action angle.

4. The conveyor belt fluid collection apparatus of claim 1, wherein: The angle adjusting mechanism (520) comprises: A cross slide (504) fixed to the bracket (20); A swing bracket (503) mounted on the cross slide (504); A second rotating shaft (501) rotatably connected to the swing bracket (503), and the oil scraping plate (500) is fixed to the second rotating shaft (501); A linear telescopic mechanism (505) connected at one end to the swing bracket (503) and at the other end to the oil scraping plate (500); The controller (700) drives the linear telescopic mechanism (505) to adjust the rotation angle of the oil scraping plate (500) around the second rotating shaft (501), and the controller (700) also drives the cross slide (504) to enable the oil scraping plate (500) to move along the two directions of the cross slide (504) with the swing bracket (503) while rotating with the second rotating shaft (501).

5. The conveyor belt fluid collection apparatus of claim 1, wherein: The oil stain detection assembly (600) comprises at least one optical sensor (601) for detecting the oil stain index and one capacitive sensor (602) for detecting the residual oil state; wherein the optical sensor (601) determines the oil stain index by detecting the change of light reflectivity or transmissivity or fluorescence on the surface of the conveyor belt (100).

6. The conveyor belt fluid collection apparatus of claim 1, wherein: Further comprising an oil collecting bottle (502), and an oil guide pipe (510) is arranged between the oil collecting bottle (502) and the oil receiving disc (400); a liquid level sensor (506) is arranged in the oil collecting bottle (502), and the liquid level sensor (506) is electrically connected to the controller (700) to send an alarm signal when the oil reaches a preset liquid level.

7. The conveyor belt fluid collection apparatus of claim 1, wherein: The linear lifting mechanism (303) comprises any one of an electric push rod, a screw lifting mechanism, and a pneumatic cylinder; and the differential speed driving mechanism (304) comprises a stepping motor.

8. An oil product collecting method for the oil product collecting apparatus according to any one of claims 1 to 7, characterized by, The method comprises the following steps: S1: using the oil stain detection assembly (600) to detect the oil stain index of the conveyor belt (100) and the residual oil state of the oil absorbing roller (300) in real time; S2: the controller (700) adjusts the process parameters based on the signals detected in step S1, and the process parameters include the pressing force between the oil absorbing roller (300) and the conveyor belt (100), the differential speed between the oil absorbing roller (300) and the conveyor belt (100), and the action angle between the oil scraping plate (500) and the oil absorbing roller (300); Step S2 specifically comprises the following substeps: S21: when the oil stain index is detected to increase, the pressing force and the differential speed are simultaneously increased.

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