A kind of spherical graphite production line central control detection device and its detection method

Abstract

The application discloses a kind of spherical graphite production line central control detection device and its detection method, belong to graphite production detection technical field, including multiple temporary storage bin, the discharge port position of multiple temporary storage bin is all communicated with third inclined conveying pipe, the second inclined conveying pipe is communicated with suction pump away from the one end of first inclined conveying pipe, the suction pump is communicated with Baidet dry detector away from the one end of second inclined conveying pipe, after screening, graphite is again transported to the inside of Baidet dry detector, and the graphite after screening removes part of unqualified product, so that it reduces detection difficulty in the secondary detection process of Baidet dry detector, only needs to carry out laser detection to the qualified product after once screening, and also intermittently generates vibration between micro electromagnetic group and first electromagnetic group in detection process, to accelerate detection speed, further improve detection accuracy and detection efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of graphite production detection, in particular to a ball graphite production line central control detection device and a detection method thereof. BACKGROUND

[0002] In the production process of spherical graphite, in order to ensure the stable operation of the production line and the consistency of product quality, the central control detection device plays a crucial role. With the wide application of graphite materials in the field of lithium ion battery negative materials, the quality requirements of spherical graphite are increasingly improved. The traditional detection method of graphite production line often has problems such as low detection efficiency, insufficient precision and low automation degree. Especially in the closed spherical graphite production line, due to the particularity of the production environment, the traditional detection method is difficult to realize online, real-time and accurate detection. This leads to the difficulty in timely and effective monitoring of the product quality on the production line, affecting the product qualification rate and production efficiency.

[0003] In the patent with the name of a ball graphite production line central control detection device and a detection method thereof, the patent number is CN118443891B, a ball graphite production line is proposed, the equipment adopts a series production mode, the first processing is sent to the next equipment for processing through a pipeline, and the cycle is repeated until the last finished product bin for packaging and testing. The product tester takes samples from the finished product bin for testing. In the actual production process, due to the use of closed pipeline, it is difficult to detect the processing of each equipment on the product, and the wear and tear of the vulnerable parts and the sealing condition are analyzed. The existing ball graphite production line and the botech dry detector are upgraded to add a sampling pipe at the finished product, semi-finished product and tailing discharge end. The opening and closing of the sampling pipe are controlled by the electric butterfly valve. The ball graphite material on the production line is transported to the collection bin by the negative pressure vacuum pump. The operator regularly samples and detects each production equipment on the ball graphite production line, so as to prevent quality accidents, improve product recovery rate and improve equipment utilization. However, in the long-term detection process of the botech dry detector, the internal detection of the botech dry detector is optical detection using laser particle size measurement technology. The stacking of graphite between a large amount of graphite entering the instrument may cause measurement error of optical elements. Therefore, a ball graphite production line central control detection device and a detection method thereof are proposed. SUMMARY

[0004] The purpose of the present application is to provide a ball graphite production line central control detection device and a detection method thereof to solve the problems in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A kind of spherical graphite production line central control detection device, including multiple temporary storage bins, the discharge port position of multiple temporary storage bins is communicated with third inclined conveying pipe, the end of multiple third inclined conveying pipe away from temporary storage bin is communicated with conveying detection structure, inclined conveying bin is integrally formed at the middle position of third inclined conveying pipe, the inside of inclined conveying bin is connected with two screen structures;

[0007] Inclined conveying bin section is right trapezoid, for passing through the gravity of its own inclination angle cooperation makes graphite roll and fall on two screen structures, form primary screening graphite powder;

[0008] Two screen structures include elastic screen assembly, magnetic attraction assembly is installed outside elastic screen assembly, elastic screen assembly is installed in the inside of inclined conveying bin, elastic screen assembly is vibrated and folded by cooperating with magnetic attraction assembly, accelerates screening graphite powder, forms secondary screening graphite powder.

[0009] Preferably, inclined conveying bin is bidirectional gradual change structure, the elastic screen assembly includes mutually connected middle soft screen, a section of hard screen, segmented soft screen and two sections of hard screen, magnetic attraction assembly includes multiple micro electromagnetic group, multiple micro electromagnetic group are fixedly connected to the bottom of middle soft screen, a section of hard screen, segmented soft screen and two sections of hard screen, and the inner bottom wall of inclined conveying bin is connected with multiple first electromagnetic group.

[0010] Preferably, magnetic attraction assembly further includes two second electromagnetic groups, two second electromagnetic groups are integrally formed above two sections of hard screen, and the side wall of inclined conveying bin is fixedly connected with side electromagnetic iron.

[0011] Preferably, multiple inclined spray holes are formed in the outside of second electromagnetic group, gas storage tank is installed outside temporary storage bin, multiple pulse valves are installed outside gas storage tank, and the gas outlet of one of pulse valves is communicated with the gas inlet of inclined spray hole through conveying pipe.

[0012] Preferably, the conveying detection structure comprises a plurality of first inclined conveying pipes, the plurality of first inclined conveying pipes are respectively connected with one ends of the third inclined conveying pipes away from the temporary storage bins, a second inclined conveying pipe is connected with a discharging port of the first inclined conveying pipe, one end of the second inclined conveying pipe is connected with a suction pump, one end of the suction pump away from the second inclined conveying pipe is connected with a Biotage dry detector, discharging ports of the plurality of third inclined conveying pipes are all inclined toward the first inclined conveying pipe, a position of the feeding port of the third inclined conveying pipe is higher than that of the first inclined conveying pipe, the first inclined conveying pipe is gradually inclined toward the end of the second inclined conveying pipe and the position of the suction pump, the Biotage dry detector and the suction pump are both lower than the plurality of temporary storage bins in height, and an electric control valve is installed outside the third inclined conveying pipe.

[0013] Preferably, two inclined guide plates are fixedly connected to the elastic screen assembly, one side of the two adjacent inclined guide plates is inclined toward the position of the first inclined conveying pipe, and a plurality of triangular dispersion guide columns are fixedly connected to the elastic screen assembly, and the triangular dispersion guide columns are arranged in a triangular manner.

[0014] Preferably, a metering sensor is installed at the bottom of the inclined conveying bin.

[0015] Preferably, a discharging pipe opening is formed in the outer portion of the inclined conveying bin, and a baffle is hingedly connected to the inside of the discharging pipe opening.

[0016] Preferably, a one-way valve plate is hingedly connected to the gas outlet of the inclined jet hole.

[0017] The application further provides a ball graphite production line central control detection method, comprising the following steps:

[0018] S1, in the grading of the intermediate product in production, when the graphite product enters the inside of the temporary storage bin, a suction pump is started to generate suction force, the graphite product in the plurality of temporary storage bins is sucked into the inside of the inclined conveying bin under the condition that the suction pump generates suction force, the graphite entering the inside of the inclined conveying bin is continuously dispersed and inclined downward for secondary screening through the inclined state of the inclined conveying bin, and first pre-screened graphite powder is obtained;

[0019] S2, when the graphite product enters the inside of the inclined conveying bin, the suction pump is closed, so that the graphite product naturally falls by gravity, and the graphite product is detected and graded by the elastic screen assembly in the process of natural falling of the graphite product, and the grading time is 1-3 min;

[0020] S3, the graphite particles enter the surface of the elastic screen assembly, and the elastic screen assembly is driven to continuously vibrate by the magnetic attraction assembly, and different vibration amplitudes are adjusted according to the amount of graphite particles entering, or the local position of the elastic screen assembly is started for screening according to the accumulation of the graphite amount, and the secondary pre-screening graphite powder is obtained after screening is completed;

[0021] S4, after the secondary pre-screening graphite powder screening is completed, the second electromagnet group is started again, the elastic screen assembly is bent up and down between the second electromagnet group and the first electromagnet group, the screen hole in the elastic screen assembly is expanded, and the rebound vibration force generated by the bending is used to clean the graphite particles attached to the surface of the elastic screen assembly.

[0022] S5, after the graphite product is pre-screened and graded, the suction pump is started again to generate suction force to transport the graded graphite product to the Bette dry detector, and the Bette dry detector is used to detect the sphericity and particle shape of the graded product.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] In the present application, during the extraction detection process, the third inclined conveying pipe and the first inclined conveying pipe arranged obliquely can save part of the suction force of the suction pump during suction, and can avoid that part of the graphite stays in the pipe during graphite conveying, causing the graphite staying in the pipe to enter the Bette dry detector together with the graphite subjected to secondary suction detection, thereby reducing the error rate of the Bette dry detector.

[0025] In the present application, the third inclined conveying pipe originally used for conveying is changed to a flat shape, and the elastic screen assembly inside is used to screen the graphite to be detected once, and the screened graphite is conveyed into the Bette dry detector again, and the screened graphite removes part of the unqualified products, so that the detection difficulty is reduced during the secondary detection of the Bette dry detector, and only the qualified products after the first screening need to be subjected to laser detection, and the micro electromagnet group and the first electromagnet group intermittently vibrate during detection, so as to accelerate the detection speed and further improve the detection accuracy and detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the present application;

[0027] Figure 2 It is a structural schematic diagram of the elastic screen assembly and the third inclined conveying pipe in the embodiment of the present application;

[0028] Figure 3 It is a structural schematic diagram of the second electromagnet group and the first electromagnet group in the embodiment of the present application;

[0029] Figure 4 Structure diagram of the conveying pipe and pulse valve in the embodiment of the present application;

[0030] Figure 5 Structure diagram of the micro electromagnet group in the embodiment of the present application;

[0031] Figure 6 Structure diagram of the middle soft screen, one section of hard screen plate, structure diagram of segmented soft screen and two sections of hard screen in the embodiment of the present application;

[0032] Figure 7 Structure diagram of the A area in the embodiment of the present application; Figure 6

[0033] Figure 8 Structure diagram of the third inclined conveying pipe in the embodiment of the present application.

[0034] In the figure: 100, temporary storage warehouse; 101, first inclined conveying pipe; 102, second inclined conveying pipe; 103, suction pump; 104, Becton dry detector; 105, third inclined conveying pipe; 106, elastic screen assembly; 1061, middle soft screen; 1062, one section of hard screen plate; 1063, segmented soft screen; 1064, two sections of hard screen; 107, metering sensor; 108, electric control valve; 200, first electromagnet group; 201, second electromagnet group; 202, micro electromagnet group; 300, side electromagnet; 400, inclined spray hole; 401, conveying pipe; 402, pulse valve; 403, gas storage tank; 500, discharge pipe; 501, baffle; 600, inclined guide plate; 700, triangular dispersion guide column; 800, one-way valve piece. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] Embodiment one, as Figure 1 ​As shown, the ball graphite production line central control detection device of the application, including a plurality of temporary storage warehouse 100, the discharge port position of a plurality of temporary storage warehouse 100 is communicated with the third inclined conveying pipe 105, the end of a plurality of third inclined conveying pipe 105 away from temporary storage warehouse 100 is communicated with the first inclined conveying pipe 101, the discharge port position of first inclined conveying pipe 101 is communicated with the second inclined conveying pipe 102, the end of second inclined conveying pipe 102 away from first inclined conveying pipe 101 is communicated with the suction pump 103, the end of suction pump 103 away from second inclined conveying pipe 102 is communicated with the baxter dry detector 104, the discharge port of a plurality of third inclined conveying pipe 105 is inclined to the direction of first inclined conveying pipe 101, the inlet position of third inclined conveying pipe 105 is higher than the position of first inclined conveying pipe 101, first inclined conveying pipe 101 gradually inclines to the position of suction pump 103 in the direction of second inclined conveying pipe 102, the height of baxter dry detector 104 and suction pump 103 is lower than a plurality of temporary storage warehouse 100, the external of third inclined conveying pipe 105 is installed with electric control valve 108.

[0037] Specifically, in the use process, when the ball graphite in the production process needs to be detected, the suction pump 103 is started to cooperate with the second inclined conveying pipe 102, the first inclined conveying pipe 101 and the third inclined conveying pipe 105 to extract the ball graphite in the temporary storage warehouse 100, when part of the ball graphite is extracted into the third inclined conveying pipe 105, the ball graphite will enter the first inclined conveying pipe 101 and the second inclined conveying pipe 102 with the third inclined conveying pipe 105, and be transported to the baxter dry detector 104 for detection, in the detection process of the ball graphite, the third inclined conveying pipe 105 is in an inclined state, so in the conveying process of the ball graphite, the ball graphite will gradually roll into the first inclined conveying pipe 101 by gravity even without the suction force of the suction pump 103, and the direction of the first inclined conveying pipe 101 is inclined to the direction of the second inclined conveying pipe 102 and the suction pump 103, after the third inclined conveying pipe 105 enters the first inclined conveying pipe 101, the ball graphite in the first inclined conveying pipe 101 will also gradually roll to the position of the suction pump 103 by gravity.

[0038] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages: compared with the prior art, in the embodiment, the third inclined conveying pipe 105 and the first inclined conveying pipe 101 arranged in an inclined manner can save part of the suction force of the suction pump 103 during the suction process, and can avoid that part of the graphite stays in the pipe during the graphite conveying process, so that the graphite staying in the pipe is also sucked into the BET dry detector 104 during the secondary suction detection, and the error rate of the BET dry detector 104 is reduced.

[0039] In the second embodiment, although the first inclined conveying pipe 101 and the third inclined conveying pipe 105 arranged in an inclined manner can faster and reduce the residual of spherical graphite, when a large amount of graphite enters the BET dry detector 104, although the unqualified spherical graphite can be detected, the large amount of graphite accumulation can cause the detection failure of the BET dry detector 104, and the technical problems are solved by the technical solutions of the present application, and specifically:

[0040] As shown in Figures 2-6 The middle position of the third inclined conveying pipe 105 is flat, gradually reduces on the side close to the first inclined conveying pipe 101, gradually increases on the side close to the temporary storage bin 100, and the third inclined conveying pipe 105 is integrally formed with an elastic screen assembly 106 inside. The elastic screen assembly 106 includes a middle soft screen 1061 at the middle position, the upper and lower sides of the middle soft screen 1061 are fixedly connected with the inner wall of the third inclined conveying pipe 105, and the left and right sides of the middle soft screen 1061 are integrally formed with a section of hard screen plate 1062. The side away from the middle soft screen 1061 of the section of hard screen plate 1062 is integrally formed with a segmented soft screen 1063, and the side away from the section of hard screen plate 1062 of the segmented soft screen 1063 is integrally formed with a two-section hard screen 1064. The middle soft screen 1061, the section of hard screen plate 1062, the segmented soft screen 1063 and the two-section hard screen 1064 are externally provided with a plurality of screen holes, and the bottom of the middle soft screen 1061, the section of hard screen plate 1062, the segmented soft screen 1063 and the two-section hard screen 1064 is fixedly connected with a plurality of micro electromagnetic groups 202. The inner bottom wall of the third inclined conveying pipe 105 is fixedly connected with a plurality of first electromagnetic groups 200.

[0041] Specifically, in use, when the suction pump 103 is started, the spherical graphite is sucked into the third oblique conveying pipe 105 in a flat shape. When the spherical graphite particles enter the third oblique conveying pipe 105, they fall onto the elastic screen assembly 106. As the spherical graphite particles move on the elastic screen assembly 106, the graphite particles that are small in size and damaged in shape, and not spherical, are screened out. The unqualified graphite particles are pre-screened out, and the qualified spherical graphite is left alone to be conveyed by the suction pump 103 to the inside of the Bette dry detector 104, and then detected by laser for the second time.

[0042] As shown in Figure 3 The bottom of the third oblique conveying pipe 105 in a flat shape is provided with a metering sensor 107.

[0043] Specifically, a metering sensor 107 is also installed at the bottom of the third inclined conveying pipe 105. Through the metering sensor 107, when the suction pump 103 continuously generates suction to suck the spherical graphite into the inside of the third inclined conveying pipe 105, the metering sensor 107 is used for weighing. When the spherical graphite enters the inside of the third inclined conveying pipe 105 and the weight reaches a certain weight through the metering sensor 107, the weight information is transmitted to the central control machine through the metering sensor 107. The central control machine stops the suction pump 103 from continuously generating suction, or further reduces the suction, reduces the situation that the spherical graphite quickly enters the inside of the first inclined conveying pipe 101, so that the spherical graphite stays on the elastic screen assembly 106. Considering that the spherical graphite as a whole is too small and cannot be completely sieved through the elastic screen assembly 106 when accumulated together, when the spherical graphite is located on the elastic screen assembly 106, the plurality of first electromagnet groups 200 and the plurality of micro electromagnet groups 202 are started. The plurality of first electromagnet groups 200 and the plurality of micro electromagnet groups 202 are periodically started and stopped through the controller, and the power supply of the first electromagnet group 200 and the micro electromagnet group 202 also changes periodically when they are periodically started and stopped. In the case of periodic mutual attraction of the first electromagnet group 200 and the micro electromagnet group 202, the medium-soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 can be vibrated. In the case of periodic mutual attraction of the first electromagnet group 200 and the micro electromagnet group 202, the medium-soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 can be vibrated continuously. In the case of continuous vibration, the spherical graphite particles accumulated together can be dispersed, and in the case of continuous vibration, the screening of the spherical graphite particles can be further accelerated, and the unqualified spherical graphite particles can be further screened out. After the unqualified spherical graphite particles are screened out, the remaining spherical graphite particles that meet the requirements are sucked into the inside of the BET dry detector 104 again, so as to be precisely screened again by the BET dry detector 104. Through the pre-mechanical screening method, the screening error rate in the detection process of the BET dry detector 104 can be reduced. Because the graphite is quantitatively conveyed into the inside of the elastic screen assembly 106 for screening each time, the weight of the unqualified spherical graphite screened out is weighed through the third inclined conveying pipe 105, and the remaining spherical graphite is conveyed into the BET dry detector 104 for secondary screening. Through multiple screening and screening, the accuracy in the spherical graphite processing and detection process is further improved, and the detection accuracy is improved.

[0044] As Figures 2-3As shown, the elastic screen assembly 106 is fixedly connected with a plurality of triangular dispersion guide columns 700, which are arranged in a triangular manner.

[0045] Specifically, when the spherical graphite is sucked into the third inclined conveying pipe 105 by the suction force of the suction pump 103, the spherical graphite entering the third inclined conveying pipe 105 is dispersed by the plurality of triangular dispersion guide columns 700, and the spherical graphite sucked and accumulated together is uniformly dispersed on the surface of the elastic screen assembly 106, thereby speeding up the pre-screening of the spherical graphite in the production process.

[0046] Further, after the spherical graphite enters the third inclined conveying pipe 105, the metering sensor 107 detects an increase in weight in the third inclined conveying pipe 105, and the central controller closes the electrically controlled valve 108, thereby avoiding the spherical graphite in the processing process from falling into the third inclined conveying pipe 105 again.

[0047] As shown, Figures 2-3 The elastic screen assembly 106 is fixedly connected with two inclined guide plates 600, and the adjacent side of the two inclined guide plates 600 is inclined toward the position of the first inclined conveying pipe 101.

[0048] Specifically, after the spherical graphite is screened by the elastic screen assembly 106, it moves to the side close to the first inclined conveying pipe 101 of the third inclined conveying pipe 105, and in the process of moving to the side close to the first inclined conveying pipe 101, in order to concentrate the graphite into the first inclined conveying pipe 101, the screened graphite is guided by the two inclined guide plates 600, thereby guiding the screened graphite into the first inclined conveying pipe 101.

[0049] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages: compared with the first embodiment, in the present embodiment, the original third inclined conveying pipe 105 for conveying is changed to a flat shape, and the elastic screen assembly 106 inside is used to screen the graphite to be detected once, and after the screened graphite is conveyed into the Bette dry detector 104 again, the screened graphite removes part of the unqualified products, so that the detection difficulty is reduced in the secondary detection process of the Bette dry detector 104, and only the qualified products after the first screening need to be detected by laser, and in the detection process, the micro electromagnetic group 202 and the first electromagnetic group 200 intermittently vibrate, thereby speeding up the detection speed and further improving the detection accuracy and detection efficiency.

[0050] In the third embodiment, considering that a large amount of spherical graphite passes through the screen holes outside the elastic screen assembly 106 during the screening process, some spherical graphite may be blocked in the screen holes after a long period of use, or some unqualified spherical graphite, i.e., semi-spherical or irregular spherical graphite, may be retained on the elastic screen assembly 106, which causes these graphites to participate in the next detection and screening process, resulting in the overlap of the residual of the previous screening detection and the product of the next detection, affecting the detection effect. To solve the above technical problems, the following technical solutions are proposed:

[0051] As shown in Figures 3-6 The second electromagnet group 201 is integrally formed above the second hard screen 1064, and the third inclined conveying pipe 105 has a side electromagnet 300 fixedly connected to the side wall surface.

[0052] Specifically, during use, when the spherical graphite passes through the surface of the elastic screen assembly 106 and is screened, the staff starts the second electromagnet group 201 and the first electromagnet group 200 at a position parallel to the second electromagnet group 201, so that the second electromagnet group 201 and the first electromagnet group 200 at a position parallel to the second electromagnet group 201 generate a repulsive force. Under the condition of generating a repulsive force, the two second electromagnet groups 201 simultaneously drive the second hard screen 1064 and the first hard screen plate 1062 to bend to a certain extent around the center point of the soft screen 1061. Under the condition that the bending is generated to a certain extent, the power supply to the second electromagnet group 201 and the micro electromagnet group 202 is canceled, so that the two no longer generate a repulsive force. Under the condition that the repulsive force disappears, the first hard screen plate 1062 and the second hard screen 1064 quickly rebound due to the disappearance of the bending force. Under the condition of quickly rebounding, the soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063, and the second hard screen 1064 generate relatively intense vibration, which causes the spherical graphite products in the screen holes of the soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063, and the second hard screen 1064 to shake off.

[0053] Further, in the case of using two second electromagnet groups 201, the magnetic attraction direction of the second electromagnet group 201 can also be changed by changing the energization of the two second electromagnet groups 201, so that the two second electromagnet groups 201 can be attracted to the bottom of the inclined feed bin during the attraction process, so that the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 are folded downward, and in the case of being folded downward, the spherical graphite particles remaining on the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 can be quickly dropped to the bottom of the inclined feed bin.

[0054] Further, the second electromagnet group 201 and the first electromagnet group 200 at the position parallel to the second electromagnet group 201 can also be started to generate mutual attraction between the second electromagnet group 201 and the first electromagnet group 200 at the position parallel to the second electromagnet group 201, so that the second hard screen 1064 and the first hard screen plate 1062 are bent downward around the center point of the middle soft screen 1061, and in the case of being bent downward, the graphite remaining on the surface of the middle soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 will fall into the inside of the third inclined conveying pipe 105 by gravity, and after the second electromagnet group 201 and the first electromagnet group 200 are de-energized, the first hard screen plate 1062 and the second hard screen 1064 will rebound again due to the disappearance of the bending force, and in the case of rapid rebound, the middle soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 will produce more violent vibration, and the spherical graphite products remaining in the inside of the middle soft screen 1061, the first hard screen plate 1062, the segmented soft screen 1063 and the second hard screen 1064 will be shaken again.

[0055] Further, in order to ensure that the second electromagnet group 201 will not be attracted by the first electromagnet group 200 to cause the bending of the elastic screen assembly 106 when the mutual attraction is generated between the micro electromagnet group 202 and the plurality of first electromagnet groups 200, the side electromagnet 300 is started at the same time during the starting process of the micro electromagnet group 202, and in the case of the side electromagnet 300 being started, the second electromagnet group 201 will be attracted, and the attraction force will be greater than the periodic attraction generated between the first electromagnet group 200 and the micro electromagnet group 202, so as to avoid the downward or upward bending of the elastic screen assembly 106 during the shaking process of the elastic screen assembly 106, which will cause the graphite to drop into the inside of the third inclined conveying pipe 105.

[0056] Further, in the process of the second electromagnet group 201 moving with the second hard screen 1064 and the first hard screen plate 1062 to the micro-bending point of the medium-soft screen 1061 and the segmented soft screen 1063 and rebounding, the second electromagnet group 201 will hit the inner wall of the third inclined conveying pipe 105, thereby generating impact vibration on the inner wall of the third inclined conveying pipe 105. The vibration generated by the impact can shake off the graphite attached to the inner wall of the third inclined conveying pipe 105, reducing the graphite attached to the inner wall of the third inclined conveying pipe 105.

[0057] Further, the periodic on-off of the micro electromagnet group 202 and the first electromagnet group 200 changes the local stiffness distribution of the screen, so that the vibration frequency covers a wide frequency band of 5-50Hz, matching the resonance frequency of particles of different particle sizes, and breaking down electrostatic adsorption and mechanical clamping.

[0058] As shown in Figure 8 The third inclined conveying pipe 105 is flat, and the outer part of the third inclined conveying pipe 105 is provided with a discharge port 500. The inner part of the discharge port 500 is hinged with a baffle 501.

[0059] Specifically, when the screened spherical graphite falls below the third inclined conveying pipe 105, the unqualified spherical graphite in the third inclined conveying pipe 105 will fall out of the outlet of the discharge port 500 through gravity and along the inner wall bottom wall of the third inclined conveying pipe 105 after the baffle 501 is opened, thereby discharging the unqualified spherical graphite from the inside of the third inclined conveying pipe 105.

[0060] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages: compared with embodiment two, in the present embodiment, the mutual attraction and mutual repulsion of the second electromagnet group 201 and part of the first electromagnet group 200 are generated by energization, thereby causing the elastic screen assembly 106 to bend and deform. After complete deformation, the attraction and repulsion are canceled again, thereby generating a larger vibration through rebound. The larger vibration generated by rebound can shake off the spherical graphite remaining on the surface and inside the screen hole of the elastic screen assembly 106, reducing the phenomenon of spherical graphite remaining on the surface of the elastic screen assembly 106, and avoiding the phenomenon of residual spherical graphite affecting the next detection.

[0061] In view of the fact that, in the process of use, although the phenomenon of spherical graphite adhering to the surface of the elastic screen assembly 106 and inside the screen holes can be reduced by larger vibration, but in the production process of spherical graphite, the spherical graphite is relatively small, and even under the condition of multiple vibration, the phenomenon of small spherical graphite tightly clamped on the surface of the elastic screen assembly 106 can still exist, therefore, in order to solve the above technical problems, the technical scheme is proposed as follows:

[0062] As shown in Figure 6 and Figure 7 , the second electromagnet group 201 is externally provided with a plurality of inclined spray holes 400, the temporary storage bin 100 is externally provided with a gas storage tank 403, the gas storage tank 403 is externally provided with a plurality of pulse valves 402, one of the pulse valves 402 is communicated with a conveying pipe 401, and the two gas outlets of the conveying pipe 401 are both penetrating through the outer wall of the third inclined conveying pipe 105 and communicated with the gas inlets of the inclined spray holes 400.

[0063] Specifically, in the process of use, after one detection is performed, the staff can start the pulse valve 402 outside the gas storage tank 403, and the gas stored in the gas storage tank 403 can be transmitted to the inclined spray holes 400 through the conveying pipe 401 by starting the pulse valve 402 communicated with the conveying pipe 401, and the high-pressure gas can be quickly conveyed to the surface of the elastic screen assembly 106 through the plurality of inclined spray holes 400, so as to flush the surface of the elastic screen assembly 106 with high-pressure gas, and after the flushing of the high-pressure gas, the phenomenon of spherical graphite clamped on the surface of the elastic screen assembly 106 and inside the screen holes can be reduced, and then the elastic screen assembly 106 can be further vibrated by the second electromagnet group 201 to further greatly reduce the phenomenon of unqualified spherical graphite remaining on the surface of the elastic screen assembly 106.

[0064] Further, the outlet position of the inclined spray hole 400 is hinged with a one-way valve plate 800, and by the arrangement of the one-way valve plate 800, the inclined spray hole 400 can be closed by the one-way valve plate 800 after the gas is sprayed, so as to avoid the phenomenon of spherical graphite entering the inside of the inclined spray hole 400 and causing blockage.

[0065] Further, the gas injection direction of the inclined spray hole 400 can be adjusted by the inclined spray hole 400 in cooperation with the energization of the second electromagnet group 201, so as to clean the different positions inside the bin body with gas, and the fatigue area of the screen can also be predicted by the metering sensor 107 and vibration spectrum analysis, and automatic triggering of local reinforced vibration or airflow flushing.

[0066] Further, the first electromagnet group 200 and the second electromagnet group 201 drive the elastic screen assembly 106 to vibrate (amplitude ± 2mm, frequency 20Hz) and the pulse air flow (pulse width 50ms) of the inclined jet hole 400 is time-synchronized, forming a chain reaction of "vibration loosening-air flow stripping".

[0067] The technical solutions in the embodiments of the application have at least the following technical effects or advantages:

[0068] Compared with example three, in this embodiment, the high-pressure gas stored in the gas storage tank 403 cooperates with the inclined jet hole 400 in the second electromagnet group 201 to first spray high-pressure gas on the surface of the elastic screen assembly 106, and the surface of the elastic screen assembly 106 is first cleaned by high-pressure gas, and then vibrated for cleaning, or vibrated first and then cleaned by high-pressure gas, so that the phenomenon of unqualified spherical graphite remaining on the surface of the elastic screen assembly 106 can be further reduced, and the phenomenon of unqualified spherical graphite remaining on the surface of the elastic screen assembly 106 affecting the next detection can be reduced, and after overall pre-screening, the false positive rate of the Becton dry detector 104 is reduced by 60%, and the detection deviation caused by residual particles is reduced to <0.5%.

[0069] The application also provides a ball graphite production line central control detection method, comprising the following steps:

[0070] S1, in the grading of the intermediate product, when the graphite product enters the inside of the temporary storage bin 100, the suction pump 103 is started to generate suction, and the graphite product in the plurality of temporary storage bins 100 is sucked into the inside of the inclined conveying bin under the condition that the suction pump 103 generates suction, and the graphite in the inside of the inclined conveying bin is continuously dispersed and inclined downward for secondary screening under the inclined state of the inclined conveying bin, to obtain first pre-screened graphite powder;

[0071] S2, when the graphite product enters the inside of the inclined conveying bin, the suction pump 103 is closed, so that the graphite product naturally falls by gravity, and the graphite product is detected and graded by the elastic screen assembly 106 during the natural falling process, and the grading time is 1-3min;

[0072] S3, after the graphite particles enter the surface of the elastic screen assembly 106, the elastic screen assembly 106 is continuously vibrated by the magnetic attraction assembly, and different vibration amplitudes are adjusted according to the amount of graphite particles entering, or the local position of the elastic screen assembly 106 is started for screening according to the accumulation of the graphite amount, and the secondary pre-screened graphite powder is obtained after screening.

[0073] S4, after the secondary pre-screening of the graphite powder is completed, the second electromagnet group 201 is started again, the elastic screen assembly 106 is bent up and down through the adsorption between the second electromagnet group 201 and the first electromagnet group 200, the screen holes in the elastic screen assembly 106 are expanded, and the graphite particles attached to the surface of the elastic screen assembly 106 are cleaned through the rebound vibration force generated by the bending.

[0074] S5, the graphite product is classified after pre-screening, the suction pump 103 is started again to generate suction force, the classified graphite product is transported to the Bette dry detector 104, and the sphericity and particle shape of the classified product are detected through the Bette dry detector 104.

[0075] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A central control and detection device for a spherical graphite production line, comprising multiple temporary storage bins, characterized in that: Each of the multiple temporary storage bins has a third inclined conveying pipe connected to its outlet. The end of each of the multiple third inclined conveying pipes away from the temporary storage bin is connected to a conveying detection structure. An inclined conveying bin is integrally formed at the middle of the third inclined conveying pipe, and two screen structures are connected inside the inclined conveying bin. The inclined conveying hopper has a right-angled trapezoidal cross section, which is used to make graphite roll onto the second screen structure by its own inclination angle and gravity, forming primary screened graphite powder; The two-screen structure includes an elastic screen assembly with a magnetic suction assembly installed on the outside. The elastic screen assembly is installed inside the inclined conveying hopper. The elastic screen assembly vibrates and folds through its own elasticity in conjunction with the magnetic suction assembly, which accelerates the screening of graphite powder and forms a secondary screened graphite powder. The inclined conveying hopper has a bidirectional gradient structure. The elastic screen assembly includes an interconnected medium-soft screen, a first-stage hard screen, a segmented soft screen, and a second-stage hard screen. The magnetic attraction assembly includes multiple micro electromagnet groups, which are all fixedly connected to the bottom of the medium-soft screen, the first-stage hard screen, the segmented soft screen, and the second-stage hard screen. Multiple first electromagnet groups are connected to the bottom wall of the inclined conveying hopper. The magnetic attraction assembly also includes two second electromagnet groups, both of which are integrally formed on the top of the two sections of rigid screen, and side electromagnets are fixedly connected to the side wall of the inclined conveying bin. Activating the second electromagnet group and the first electromagnet group at a position parallel to the second electromagnet group causes them to generate a repulsive force. Under the condition of generating a repulsive force, the two second electromagnet groups will simultaneously drive the two sections of rigid screen and the section of rigid screen plate to bend upward around the center point of the medium-soft screen, expanding the screen holes in the elastic screen assembly. Through the adsorption between the second electromagnet group and the first electromagnet group, the elastic screen assembly is driven to bend downward. Under the condition of bending downward, the spherical graphite particles that remain on the section of soft screen and the two sections of rigid screen plate will quickly fall to the bottom of the inclined conveying hopper. By changing the energizing state of the second electromagnet group to adjust the direction of its magnetic adsorption and repulsion, the first section of hard screen plate, the segmented soft screen, and the second section of hard screen are driven to fold in a state with one side higher and the other side lower, based on the medium soft screen. This causes the graphite particles remaining on the first section of hard screen plate, the segmented soft screen, and the second section of hard screen to fall quickly to the bottom of the inclined conveying bin.

2. The central control detection device for a spherical graphite production line according to claim 1, characterized in that: The second electromagnet assembly has multiple inclined nozzles on its exterior. An air storage tank is installed on the exterior of the temporary storage chamber. Multiple pulse valves are installed on the exterior of the air storage tank. The outlet of one of the pulse valves is connected to the inlet of the inclined nozzle through a delivery pipe.

3. The central control detection device for a spherical graphite production line according to claim 1, characterized in that: The conveying and detection structure includes multiple first inclined conveying pipes, each of which is connected to the end of a third inclined conveying pipe away from the temporary storage bin. A second inclined conveying pipe is connected to the outlet of each of the first inclined conveying pipes. A suction pump is connected to the end of the second inclined conveying pipe away from the first inclined conveying pipe. A Baxter dry detector is connected to the end of the suction pump away from the second inclined conveying pipe. The outlets of the multiple third inclined conveying pipes are all inclined towards the first inclined conveying pipe. The inlet of each third inclined conveying pipe is higher than the position of the first inclined conveying pipe. The end of the first inclined conveying pipe towards the second inclined conveying pipe gradually tilts towards the suction pump. The height of the Baxter dry detector and the suction pump is lower than the multiple temporary storage bins. An electrically controlled valve is installed on the outside of each third inclined conveying pipe.

4. The central control detection device for a spherical graphite production line according to claim 3, characterized in that: Two inclined guide plates are fixedly connected to the elastic screen assembly. The adjacent side of the two inclined guide plates is inclined toward the position of the first inclined conveying pipe. Multiple triangular dispersion guide columns are fixedly connected to the elastic screen assembly. The triangular dispersion guide columns are arranged in a triangular manner.

5. The central control detection device for a spherical graphite production line according to claim 4, characterized in that: Measuring sensors are installed at the bottom of the inclined conveying hopper.

6. The central control detection device for a spherical graphite production line according to claim 5, characterized in that: The inclined conveying bins are all equipped with discharge ports on the outside, and the discharge ports are hinged with baffles inside.

7. The central control detection device for a spherical graphite production line according to claim 2, characterized in that: A one-way valve is hinged at the air outlet of the inclined nozzle.

8. A method for central control detection in a spherical graphite production line, employing a central control detection device for a spherical graphite production line as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. In the intermediate product grading process, when the graphite product enters the temporary storage bin, the suction pump is activated to generate suction. When the suction pump generates suction, the graphite products in multiple temporary storage bins are sucked into the inclined conveying bin. The graphite entering the inclined conveying bin is continuously dispersed and tilted downwards for secondary screening to obtain primary pre-screened graphite powder. S2. When the graphite product enters the inclined conveying bin, the suction pump is turned off, allowing the graphite product to fall naturally by gravity. During the natural fall of the graphite product, the graphite product is detected and graded by the elastic screen assembly. The grading time is 1-3 minutes. S3. After the graphite particles enter the surface of the elastic screen assembly, the magnetic attraction component drives the elastic screen assembly to continuously vibrate. The vibration amplitude is adjusted according to the amount of graphite particles entering, or the local position of the elastic screen assembly is activated to screen according to the accumulation of graphite. After screening, secondary pre-screened graphite powder is obtained. S4. After the secondary pre-screening of graphite powder is completed, the second electromagnet group is started again. The adsorption between the second electromagnet group and the first electromagnet group causes the elastic screen assembly to bend up and down, and the rebound vibration force generated by the bending cleans the graphite particles attached to the surface of the elastic screen assembly. S5. After the graphite products are pre-screened and graded, the suction pump is turned on again to generate suction and transport the graded graphite products to the Baxter dry detector. The Baxter dry detector is used to test the sphericity and particle shape of the graded products.

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