A solid particle foreign matter detection device and a solid particle foreign matter detection method

Abstract

The application belongs to the technical field of detection equipment, and particularly relates to a solid particle foreign matter detection device and a solid particle foreign matter detection method. The solid particle foreign matter detection device comprises a box body, a detection main body, a sensor and a processor. The box body is provided with a feeding port and a discharging port. The detection main body is arranged in the interior of the box body, the sensor is arranged on the detection main body, and the sensor is signal-connected with the processor. When the material containing the solid particle foreign matter falls in a free fall mode from the position directly above the feeding port and hits the detection main body, the detection main body will produce different amplitudes and vibration frequencies after being hit due to the difference in mass and hardness between the object and the solid particle foreign matter, and the power generated in a unit time is different. The sensor picks up the solid sound signal generated after the detection main body is hit and converts the solid sound signal into an electric signal. After the electric signal is processed by an analog circuit, the electric signal is sent to the processor for analysis and logical judgment, so as to accurately judge whether the object contains the solid particle foreign matter.

Description

Technical Field

[0001] This invention belongs to the field of detection equipment technology, specifically relating to a solid particle foreign object detection device and a solid particle foreign object detection method. Background Technology

[0002] Foreign object detection mainly involves detecting whether there are other foreign objects in the desired object, so as to filter out the foreign objects and improve the purity of the desired object.

[0003] In existing technologies, there are many devices and methods for detecting or screening foreign objects, such as X-ray foreign object detectors, chromatographs, electromagnetic foreign object detection devices, and mechanical screens; among them,

[0004] X-ray foreign object detectors distinguish between materials and foreign objects by analyzing the density of substances; chromatographs distinguish between materials and foreign objects by the differences in spectral composition and color reflected from the surface of a substance. However, both X-ray foreign object detectors and chromatographs have low detection efficiency, cannot detect large amounts of materials simultaneously, require high technical skills from users, have poor adaptability to different industrial environments, and consume a lot of energy, which leads to a corresponding increase in their operating and maintenance costs.

[0005] Electromagnetic foreign object detection devices have high detection efficiency; however, they can only detect metallic foreign objects and cannot detect non-metallic foreign objects, which limits their application. Therefore, inventing a foreign object detection device and method with high detection efficiency and wide applicability is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In order to solve the above-mentioned problems in the prior art, the present invention provides a solid particle foreign object detection device to solve the technical problem that the detection efficiency of the existing solid particle foreign object detection devices is low or the limitations are large, which leads to the limited application range of the solid particle foreign object detection devices.

[0007] This invention is specifically implemented through the following technical solutions:

[0008] A solid particle foreign object detection device includes a housing, a detection body, a sensor, and a processor;

[0009] The top of the box is provided with a feed inlet, and the bottom of the box is provided with a discharge outlet;

[0010] The detection body is disposed inside the housing, between the inlet and the outlet. The sensor is disposed on the detection body and is connected to the processor. The sensor picks up the solid-state sound signal generated after the detection body is impacted and converts the solid-state sound signal into an electrical signal. The electrical signal is processed by the analog circuit and sent to the processor for analysis and logical judgment.

[0011] To better realize the present invention, further optimizations are made to the above structure. The detection body includes multiple detection plates, which are arranged at equal intervals along the length or width direction of the box body. The multiple detection plates are located in the same horizontal plane, and there is a gap between two adjacent detection plates. All detection plates are equipped with the sensor.

[0012] To better realize the present invention, the above structure is further optimized by tilting the detection plate inside the box and making the planes on which the plurality of detection plates are located parallel.

[0013] To better realize the present invention, the above structure is further optimized. The number of the detection subjects is multiple, and the multiple detection subjects are arranged sequentially along the height direction of the box, and the planes in which the multiple detection subjects are located are parallel.

[0014] To better realize the present invention, further optimizations are made to the above structure. A driving device A is provided at the discharge port. The actuating end of the driving device A is provided with a push plate A and a push plate B. The push plate A and the push plate B are fixedly connected. The distance between the side of the push plate A near the discharge port and the side of the push plate B near the discharge port is greater than the distance between the side of the push plate A away from the discharge port and the side of the push plate B away from the discharge port. Furthermore, the distance between the side of the push plate A away from the discharge port and the side of the push plate B away from the discharge port is greater than the width of the discharge port.

[0015] The drive device A is signal-connected to the processor, and the processor controls the drive device A to push the push plate A and the push plate B in the horizontal direction.

[0016] To better realize the present invention, further optimizations are made to the above structure. When the driving device A pushes the push plate A to the working position, the side of the push plate A near the discharge port is connected to the edge of the discharge port; when the driving device A pulls the push plate B to the working position, the side of the push plate B near the discharge port is connected to the edge of the discharge port.

[0017] To better realize the present invention, the above structure is further optimized. A guide plate is provided inside the box. The guide plate is located directly above the discharge port. The height of the two sides of the guide plate is lower than the height of the middle part of the guide plate, and the area of ​​the orthogonal projection of the guide plate is larger than the area of ​​the discharge port.

[0018] In summary, the solid particle foreign object detection device provided by this invention has the following technical effects:

[0019] This solid particle foreign object detection device can detect a large number of objects simultaneously, thereby improving its detection efficiency. The processor in the device determines the presence of solid particles by detecting the different solid sound signals generated when an object collides with the detection body. This allows for accurate detection of solid particles in objects. Furthermore, the device can be used to detect various types of solid particles, thus broadening its application range.

[0020] Furthermore, the present invention also provides a method for detecting solid particulate foreign objects, the method being implemented by the aforementioned solid particulate foreign object detection device, the method comprising the following steps:

[0021] The object is poured into the box from directly above and at the same height as the feed inlet, allowing it to fall freely and impact the detection body, causing the detection body to generate a solid-state sound signal.

[0022] The sensor picks up the solid-borne sound signal generated after the detection subject is hit and converts the solid-borne sound signal into an electrical signal. The electrical signal is then processed by the analog circuit and sent to the processor for analysis and logical judgment.

[0023] To better realize the present invention, further optimizations are made to the above structure. The solid-state sound signal includes the amplitude of the detection body, the vibration frequency of the detection body, and the power generated by the detection body per unit time; the vibration frequency of the detection body is in the range of 2KHz-60KHz.

[0024] In summary, the solid particle foreign object detection method provided by this invention has the following technical effects:

[0025] This solid particle foreign object detection method utilizes the different solid sound signals generated when an object and a solid particle foreign object collide with the detection subject to determine whether a solid particle foreign object is present in the object. This allows the solid particle foreign object detection method to be used to detect various types of solid particle foreign objects, making the detection of solid particle foreign objects simpler and more convenient. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a solid particle foreign object detection device according to the present invention;

[0028] Figure 2 This is a cross-sectional view of the solid particle foreign object detection device of the present invention in the transverse direction;

[0029] Figure 3 This is a cross-sectional view of the solid particle foreign object detection device of the present invention in the longitudinal direction;

[0030] Figure 4 This is a schematic diagram of the detection body in a solid particle foreign object detection device of the present invention;

[0031] Figure 5 The solid sound signal image is acquired in real time by using an oscilloscope to acquire the sensor detected by the solid particle foreign object detection device of the present invention;

[0032] Figure 6 The solid sound signal image is acquired in real time by using an oscilloscope to acquire the sensor detected by the solid particle foreign object detection device of the present invention;

[0033] Figure 7 The solid sound signal image detected by the sensor in the solid particle foreign object detection device of the present invention is acquired in real time using an oscilloscope;

[0034] Figure 8 The solid sound signal image detected by the sensor in the solid particle foreign object detection device of the present invention is acquired in real time using an oscilloscope.

[0035] Figure label:

[0036] 1. Housing; 11. Inlet; 12. Outlet; 13. Drive unit; 141. Push plate A; 142. Push plate B; 15. Guide plate;

[0037] 2. Detector body; 21. Detector plate;

[0038] 3. Install the support legs. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0040] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Example 1:

[0043] like Figures 1 to 8 As shown:

[0044] A solid particle foreign object detection device includes a housing 1, a detection body 2, a sensor, and a processor; wherein,

[0045] The box body 1 is a box structure. The top of the box body 1 is provided with a feed inlet 11 and the bottom of the box body 1 is provided with a discharge outlet 12.

[0046] The detection body 2 is located inside the housing 1, between the inlet 11 and the outlet 12. The sensor is installed on the detection body 2 and is connected to the processor.

[0047] The solid particle foreign object detection device can use the feeding surface directly above the feed inlet 11 as the initial potential energy surface. The feeding surface is parallel to the horizontal plane. All objects are put down from the feeding surface, so that the objects fall in a free fall manner, enter the box 1 through the feed inlet 11, and hit the detection body 2.

[0048] All objects have the same initial potential energy. When falling from the same height, all objects generate the same potential energy. However, the mass, hardness, and composition of solid particles differ from those of the objects, resulting in different potential energies generated by the solid particles and the objects. Consequently, the solid sound signals generated when the solid particles collide with the object and the detection body 2 are also different. The processor analyzes the solid sound signals with different characteristics generated when the solid particles collide with the object and the detection body 2 to determine whether there are solid particles in the object, thus accurately detecting solid particles in the object.

[0049] Furthermore, this solid particle foreign object detection device can be used to detect materials in various forms (particles, powders, liquids, and gases, etc.) to detect whether the materials contain different types of solid particle foreign objects such as metals, ceramics, and rocks, thus making the application range of this solid particle foreign object detection device wider.

[0050] It should be noted that the aforementioned solid-state sound signal refers to the amplitude generated by the detector 2 after it is struck, the vibration frequency of the detector 2, and the power generated by the detector 2 per unit time; the vibration frequency range of the detector 2 is 2KHz-60KHz.

[0051] Because solid particles and materials have different compositions and hardness, when some solid particles and materials have the same mass, the amplitude or frequency of the vibration generated when the solid particles hit the detection body 2 will be the same as or similar to the amplitude or frequency of the vibration generated when the materials hit the detection body 2.

[0052] However, the power generated per unit time after a solid particle foreign object impacts the detection body 2 is different from the power generated per unit time after an object impacts the detection body 2. After signal processing by the analog circuit, the signal is sent to the processor for analysis and logical judgment to more accurately determine whether there is a solid particle foreign object in the material, thereby effectively improving the detection accuracy of the solid particle foreign object detection device.

[0053] Preferably, the distance between the initial potential energy surface and the feed inlet 11 is 3-30cm. Within this distance range, the fixed sound signals generated when the object and the solid particle foreign object collide with the detection body 2 have obvious differences, so that the solid particle foreign object detection device can more accurately detect solid particle foreign objects in the material.

[0054] The optimized detection body 2 includes multiple detection plates 21; wherein,

[0055] Multiple detection plates 21 are arranged at equal intervals along the length or width of the box 1. There is a gap between two adjacent detection plates 21, so that the object can move towards the discharge port 12 through the gap between two adjacent detection plates 21. All detection plates 21 are equipped with sensors, and multiple detection plates 21 are located in the same horizontal plane, so that the object falls at the same point.

[0056] When an object and a solid particle fall from the same height onto the detection plate 21, the potential energy generated by the object and the solid particle is different, and the solid sound signals generated when they hit the detection plate 21 are also different, so that the solid particle foreign object detection device can more accurately detect whether there is a solid particle foreign object in the object.

[0057] Preferably, the detector plate 21 is provided with mounting feet 3 to facilitate the installation of the sensor, so as to make the installation of the sensor more convenient.

[0058] In an optimized configuration, the aforementioned detector plate 21 is inclinedly arranged inside the housing 1, and the planes on which the multiple detector plates 21 are located are parallel.

[0059] When an object falls onto the detector plate 21, it will slide along the inclined detector plate 21 and move towards the discharge port 12 through the gap between two adjacent detector plates 21. This is to prevent the object from staying on the detector plate 21, so that subsequent falling objects cannot hit the detector plate 21 and thus affect the detection results.

[0060] Preferably, the angle between the plane where the detection plate 21 is located and the horizontal plane is 30°-80°. Among them, when the angle between the plane where the detection plate 21 is located and the horizontal plane is 45°, the detection efficiency and accuracy of the solid particle foreign object detection device are the highest.

[0061] In an optimized configuration, the number of the aforementioned detection subjects 2 is multiple, and the multiple detection subjects 2 are arranged sequentially along the height direction of the housing 1, with the planes on which the multiple detection subjects 2 are located being parallel, in order to improve the detection accuracy of the solid particle foreign object detection device.

[0062] It should be noted that the tilting directions of the detection plates 21 in the two adjacent detection bodies 2 are opposite.

[0063] In an optimized configuration, drive devices 13 are respectively provided on both sides of the aforementioned discharge port 12; wherein,

[0064] The actuating end of the drive device 13 is provided with push plate A141 and push plate B142. Push plate A141 and push plate B142 are fixedly connected. The distance between the side of push plate A141 near the discharge port 12 and the side of push plate B142 near the discharge port 12 is greater than the distance between the side of push plate A141 away from the discharge port 12 and the side of push plate B142 away from the discharge port 12. The distance between the side of push plate A141 away from the discharge port 12 and the side of push plate B142 away from the discharge port 12 is greater than the width of the discharge port 12.

[0065] The drive unit 13 is connected to the processor signal, and the processor controls the drive unit 13 to push the push plate A141 and push plate B142 in the horizontal direction.

[0066] When the processor controls the drive device 13 to push the push plate A141 to the working position, the side of the push plate A141 near the discharge port 12 connects with the edge of the discharge port 12; at this time, the material discharged from the discharge port 12 will slide out along the push plate A141 in a direction away from the drive device 13.

[0067] When the processor controls the drive device 13 to pull the push plate B142 to the working position, the side of the push plate B142 near the discharge port 12 connects with the edge of the discharge port 12; at this time, the material discharged from the discharge port 12 will slide out along the push plate B142 towards the drive device 13.

[0068] Specifically, when the processor determines that there are no solid particles in the falling object, the processor will control the drive device 13 to move, so that the push plate A141 will move to the working position, and the object discharged from the discharge port 12 will slide away from the drive device 13 along the push plate A141.

[0069] When the processor determines that there are solid particles in the falling object, the processor will control the drive device 13 to move the push plate B142 to the working position. The object discharged from the discharge port 12 will slide down the push plate B142 towards the drive device 13 to complete the screening of solid particles, thus making the solid particle foreign object detection device more convenient to use.

[0070] In an optimized configuration, a baffle plate 15 is provided inside the aforementioned housing 1; wherein,

[0071] The guide plate 15 is located directly above the discharge port 12. The height of the two sides of the guide plate 15 is lower than the height of the middle part of the guide plate 15, and the area of ​​the frontal projection of the guide plate 15 is larger than the area of ​​the discharge port 12.

[0072] When the solid particle foreign object detection device is working, the material above the discharge port 12 will be obstructed by the guide plate 15 when it falls, and will slide down along the sides of the guide plate 15.

[0073] The guide plate 15 can slow down the falling time of the material, providing reaction time for the action of the drive device 13, so as to prevent the solid particles detected by the solid particle foreign object detection device from falling too fast and sliding away from the drive device 13 along with the material.

[0074] Example 2:

[0075] like Figures 1 to 8 As shown:

[0076] A method for detecting solid particulate foreign objects, implemented by the solid particulate foreign object detection device described in Example 1, includes the following steps:

[0077] The object is poured into the box 1 from directly above the feed inlet 11 at the same height, so that the initial position of the object is the same, and the object falls in a free fall manner and hits the detection body 2, so that the detection body 2 generates a solid sound signal.

[0078] The sensor picks up the solid-borne sound signal generated after the detection subject 2 is hit and converts the solid-borne sound signal into an electrical signal. The electrical signal is then processed by the analog circuit and sent to the processor for analysis and logical judgment.

[0079] The optimized solid-state sound signal includes the amplitude of the detector 2, the vibration frequency of the detector 2, and the power generated by the detector 2 per unit time; the vibration frequency of the detector 2 is in the range of 2KHz-60KHz.

[0080] This solid particle foreign object detection method utilizes the solid sound signals with different characteristics generated when an object and a solid particle foreign object collide with the detection body 2 to determine whether there is a solid particle foreign object in the object. This method can be used to detect various types of solid particle foreign objects (metals, ceramics, rocks, etc.), making the detection of solid particle foreign objects simpler and more convenient.

[0081] Combination Figures 5 to 8 As shown, where,

[0082] Figures 5 to 8 Signal 1 in the diagram is the solid-state sound signal detected in real time by the sensor during operation, and signal 2 is the voltage amplitude signal obtained after processing signal 1.

[0083] Depend on Figure 5 Part A and Figure 6As can be seen from part B, when a solid particle foreign object impacts the detection plate 21, the absolute voltage amplitude difference generated by it on the time axis is significantly different from the absolute voltage amplitude difference generated by the material impacting the detection plate 21 on the time axis. The processor uses this signal to determine that there is a solid particle foreign object in the material.

[0084] And through Figure 5 Part A and Figure 6 Part B in the analysis also indicates that the impact force of the solid particle foreign object is relatively large. Therefore, it can be inferred that the mass and hardness of the solid particle foreign object are greater than those of the material.

[0085] Compare the voltage amplitude signal displayed by signal 2 with the corresponding signal 1 on the same time axis. Figure 7 Part C in Figure 8 Part D clearly shows that the absolute voltage amplitude difference generated when solid particles collide with the detection plate 21 is basically the same as the absolute voltage amplitude difference generated when the material collides with the detection plate 21. However, it is clear that the power density generated on the time axis is larger when solid particles collide with the detection plate 21. After signal 1 is processed by amplification, filtering, rectification and integration circuits, signal 2 is obtained and displayed on the oscilloscope. In the time domain, the signal amplitude difference generated when the material and solid particles collide with the detection plate 21 can be clearly known, so that the processor can accurately determine the presence of solid particles in the material through this signal.

[0086] Preferably, when the processor determines that there are no solid particles in the falling object, the processor will control the drive device 13 to move, and the pusher plate A141 will move to the working position, and the object discharged from the discharge port 12 will slide away from the drive device 13 along the pusher plate A141.

[0087] When the processor determines that there are solid particles in the falling object, the processor will control the drive device 13 to move the push plate B142 to the working position. The object discharged from the discharge port 12 will slide down the push plate B142 towards the drive device 13 to complete the screening of solid particles, thus making the solid particle foreign object detection device more convenient to use.

[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A solid particle foreign object detection device, characterized in that: Includes a housing (1), a detection body (2), sensors, and a processor; The top of the box (1) is provided with a feed inlet (11), and the bottom of the box (1) is provided with a discharge outlet (12). The detection body (2) is disposed inside the housing (1), and the detection body (2) is located between the feed inlet (11) and the discharge outlet (12). The sensor is disposed on the detection body (2) and is connected to the processor. The sensor picks up the solid sound signal generated after the detection body (2) is hit and converts the solid sound signal into an electrical signal. The electrical signal is processed by the analog circuit and sent to the processor for analysis and logical judgment. The processor is used to analyze the electrical signal to obtain the amplitude generated after the detection body (2) is hit, the vibration frequency of the detection body (2) and the power generated by the detection body (2) per unit time, and to make logical judgments based on the amplitude, the vibration frequency and the power generated per unit time. The detection body (2) includes multiple detection plates (21). The multiple detection plates (21) are arranged at equal intervals along the length or width direction of the box (1), and the multiple detection plates (21) are located in the same horizontal plane. There is a gap between two adjacent detection plates (21). All the detection plates (21) are equipped with the sensor. The detection plate (21) is inclinedly arranged inside the box (1), and the planes on which the plurality of detection plates (21) are located are parallel; The number of the detection subjects (2) is multiple, and the multiple detection subjects (2) are arranged sequentially along the height direction of the box (1), and the planes in which the multiple detection subjects (2) are located are parallel.

2. The solid particle foreign object detection device according to claim 1, characterized in that: A driving device (13) is provided at the discharge port (12). The actuating end of the driving device (13) is provided with a push plate A (141) and a push plate B (142). The push plate A (141) and the push plate B (142) are fixedly connected. The distance between the side of the push plate A (141) near the discharge port (12) and the side of the push plate B (142) near the discharge port (12) is greater than the distance between the side of the push plate A (141) away from the discharge port (12) and the side of the push plate B (142) away from the discharge port (12). The distance between the side of the push plate A (141) away from the discharge port (12) and the side of the push plate B (142) away from the discharge port (12) is greater than the width of the discharge port (12). The drive device (13) is connected to the processor via a signal, and the processor controls the drive device (13) to push the push plate A (141) and the push plate B (142) in the horizontal direction.

3. The solid particle foreign object detection device according to claim 2, characterized in that: When the driving device (13) pushes the push plate A (141) to the working position, the side of the push plate A (141) near the discharge port (12) is connected to the edge of the discharge port (12); when the driving device (13) pulls the push plate B (142) to the working position, the side of the push plate B (142) near the discharge port (12) is connected to the edge of the discharge port (12).

4. The solid particle foreign object detection device according to claim 3, characterized in that: The box (1) is provided with a guide plate (15), which is located directly above the outlet (12). The height of the two sides of the guide plate (15) is lower than the height of the middle part of the guide plate (15), and the area of ​​the orthogonal projection of the guide plate (15) is greater than the area of ​​the outlet (12).

5. A method for detecting solid particulate foreign objects, characterized in that: The method is implemented by the solid particle foreign object detection device according to any one of claims 1 to 4, and the method includes the following steps: The object is poured into the box (1) from directly above the feed inlet (11) at the same height, so that the object falls freely and hits the detection body (2), causing the detection body (2) to generate a solid sound signal. The sensor picks up the solid sound signal generated after the detection subject (2) is hit and converts the solid sound signal into an electrical signal. The electrical signal is then processed by the analog circuit and sent to the processor for analysis and logical judgment.

6. The method for detecting solid particulate foreign objects according to claim 5, characterized in that: The solid-state sound signal includes the amplitude of the detection body (2), the vibration frequency of the detection body (2), and the power generated by the detection body (2) per unit time; the vibration frequency of the detection body (2) is in the range of 2KHz-60KHz.

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