Magnetic substance screening and residual magnetism detection equipment and use method thereof

Abstract

The invention discloses magnetic substance screening and residual magnetism detection equipment and a use method thereof. The magnetic substance screening and residual magnetism detection equipment comprises a pre-treatment assembly, a magnetic substance screening assembly and a residual magnetism detection assembly, wherein the pre-treatment assembly can perform preliminary impurity filtration on materials; the residual magnetism detection assembly comprises a scraping unit and a detection unit, the materials enter the detection unit after being scraped by the scraping unit, and the area, where magnetic substances exist, of the scraped materials is detected by the detection unit to be an unqualified area; and the sorting assembly comprises a movable sorting unit and a fixed material receiving unit, and when the unqualified area moves to the sorting assembly, the movable sorting unit receives the materials on the unqualified area. The invention discloses magnetic material screening and residual magnetism detection equipment, which can be used for carrying out paving detection on materials, so that the area of the materials with the magnetic materials is delimited and is directly recycled, the condition of magnetic material residue is avoided, and the screening quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of residual magnetism detection, and in particular to a magnetic material screening and residual magnetism detection device and a use method thereof. Background Art

[0002] Large-scale magnetic shielding facilities are large in size, and expensive non-magnetic metal materials cannot be used for all construction materials. Therefore, conventional building materials must be used. Such building materials themselves are mixed with a large number of magnetic impurities, which will greatly interfere with the residual magnetism inside the facility after construction. In addition to the construction of zero-magnetic facilities, some industrial production activities also have a demand for low-magnetic and non-magnetic materials, such as solar cells that require extremely high iron content in quartz sand, or artificial organs that can reduce the interference of the magnetic field environment on patients. In summary, whether it is the construction of magnetic shielding facilities or industrial production, an automated equipment that can quickly and efficiently remove magnetic impurities and detect the residual magnetism of materials is required.

[0003] For example, the publication number "CN 116921062 A" discloses a "powder material processing machine after silicon material crushing", including a feeding rack, a magnetic separation rack and an exhaust pipe. The feeding rack and the magnetic separation rack are both right-angled triangle structures, and the two are placed in a colinear manner with their vertical right-angled sides close to each other. The exhaust pipe is placed horizontally and is located behind the feeding rack and the magnetic separation rack. However, in actual applications, this type of magnetic separator can only simply remove magnetic materials, and some fine magnetic materials still exist after magnetic separation due to their small size and deep burial. There are omissions in the magnetic separation, which affects the subsequent construction of zero magnetic facilities. Summary of the invention

[0004] In response to the problem of omissions after magnetic separation in the prior art mentioned in the background technology, the present invention provides a magnetic material screening and residual magnetism detection equipment, which can flatten the material for detection, thereby demarcating the area where the magnetic material exists and directly recovering it, thereby avoiding the occurrence of magnetic material residues and ensuring the quality of screening.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A magnetic material screening and residual magnetism detection device, comprising: Pre-treatment component: capable of preliminary impurity filtering of materials; Residual magnetism detection component: includes a scraping unit and a detection unit. The material enters the detection unit after being scraped flat by the scraping unit. The area where the scraped material is detected by the detection unit to contain magnetic substances is an unqualified area; Sorting component: It includes a movable sorting unit and a fixed material receiving unit. When the unqualified area moves to the sorting component, the movable sorting unit receives the material on the unqualified area. By setting a scraping unit on the front side of the detection unit, the uniformity of the material on the conveyor belt can be ensured, and the detection quality of the subsequent detection unit is improved. The detection signal of the detection unit is used to drive the movable sorting unit in the sorting component to move, so that all the materials on the unqualified area are received, and the materials received by the fixed material receiving unit are all qualified areas, and the qualified area is the area where no magnetic substances are detected by the detection unit, thereby improving the accuracy of screening.

[0007] Preferably, the residual magnetic detection component includes a detection discharge part, the fixed material receiving unit includes a material discharge chute arranged below the detection discharge part, and the movable sorting unit includes a sorting hopper, and the sorting hopper can move between the material discharge chute and the detection discharge part. The receiving part for the falling material in the detection discharge part is changed by the movement of the sorting hopper. When the sorting hopper moves between the detection discharge part and the material discharge chute, the material discharged from the detection discharge part is intercepted by the sorting hopper and cannot enter the material discharge chute. This part is the material in the unqualified area; when the sorting hopper returns to its position, the material in the qualified area is received by the material discharge chute.

[0008] Preferably, the residual magnetism detection component includes a detection discharge part, the movable sorting unit includes an oblique settling plate docked with the detection discharge part, and the fixed material receiving unit docks with the oblique settling plate. By setting the oblique settling plate, the material movement path in the unqualified area can be controlled by relying on the inclination of the oblique settling plate, so that the continuity of the material transportation path can be improved, and the accuracy of material transportation can be controlled. The unqualified area can be recovered by controlling the oblique settling plate to rotate the starting position and reset the end position to cover the unqualified area, thereby avoiding the situation where the material is spilled on the side wall of the sorting hopper due to the back and forth movement of the sorting hopper, causing confusion in the material sorting effect, or the need to additionally recover some materials in the qualified area to avoid confusion, thereby improving the accuracy of sorting.

[0009] Preferably, the oblique settling plate includes a plurality of independent settling plates, and the arrangement direction of each independent settling plate is staggered with the material movement direction. When the material on the unqualified area moves to the corresponding independent settling plate, the independent settling plate can settle independently. By setting the independent settling plate, the recovery accuracy of the unqualified area can be improved.

[0010] Preferably, the pre-processing unit includes an iron removal unit, the iron removal unit includes an oblique magnetic conveyor belt, the oblique magnetic conveyor belt includes a recycling lower part, and a transfer unit for receiving non-magnetic materials is arranged on the recycling lower part. The iron removal unit is used to perform preliminary sorting and screening by utilizing the material's own gravity and the magnetic attraction characteristics of the magnetic substances in the material.

[0011] Preferably, the oblique magnetic conveyor belt includes a magnetic rotary belt and a non-magnetic conveyor belt, the non-magnetic conveyor belt includes a magnetic conveying portion in contact with the magnetic rotary belt, the non-magnetic conveyor belt includes a non-magnetic discharge portion with a gap between the magnetic rotary belt and the magnetic conveyor belt, and the magnetic material moves from the magnetic conveying portion to the non-magnetic discharge portion on the non-magnetic conveyor belt. By dividing the non-magnetic conveyor belt into a magnetic conveying portion and a non-magnetic discharge portion, the adsorbed magnetic material can be separated in the non-magnetic discharge portion, thereby realizing the recovery of the magnetic material.

[0012] Preferably, the iron removal unit includes a scraper conveyor belt, and the scraper conveyor belt is connected to the middle of the oblique magnetic conveyor belt. The scraper conveyor belt is connected to the middle of the oblique magnetic conveyor belt by the designer, so that both non-magnetic materials and magnetic materials can be screened in sufficient time.

[0013] The pre-processing component includes a plurality of graded conveying channels, and the materials are divided into a plurality of classified materials according to their types. Each classified material enters a corresponding graded conveying channel, and the classified materials in each graded conveying channel are gathered in front of the residual magnetism detection component. The graded conveying channel is to divide the magnetic separation degree of each conveying channel into levels, wherein according to a large range, it mainly includes a graded conveying channel for fine screening, a graded conveying channel for coarse screening, and a graded conveying channel without screening. In actual production operations, it can also be increased or decreased according to actual use needs, such as only selecting a graded conveying channel for fine screening and a graded conveying channel for coarse screening, or only selecting a graded conveying channel for fine screening and a graded conveying channel without screening, or further subdividing fine screening and coarse screening, so as to improve adaptability and avoid the defects of low screening efficiency and poor pertinence caused by piling all materials together for screening.

[0014] The invention discloses a method of use, comprising the following steps: S1, the pre-processing component performs preliminary impurity screening and filtering on the material, and the filtered material enters the residual magnetism detection component; S2, the residual magnetic detection component scrapes the material flat; S3, the scraped material enters the detection unit for magnetic detection; S4. After the detection unit detects the presence of magnetic material, it demarcates the area as an unqualified area and sends a signal to the active sorting unit; S5. The materials in the unqualified area are intercepted and collected by the active sorting unit before entering the fixed material receiving unit.

[0015] Preferably, in step S5, after the active sorting unit receives the signal from the detection unit, when the unqualified area of ​​the material is about to move from the detection discharge part to the discharge chute, the sorting hopper is driven to move between the detection discharge part and the discharge chute, and retreats after receiving all the materials on the unqualified area.

[0016] Preferably, in step S5, after the active sorting unit receives the signal from the detection unit, when the unqualified area of ​​the material moves to the inclined settling plate, the inclined settling plate tilts downward and settles to collect the material on the unqualified area.

[0017] The beneficial effects of the present invention are as follows: (1) The material can be flattened and tested, so that the area where magnetic substances exist can be delineated and directly recycled, thereby avoiding the occurrence of magnetic material residues and ensuring the quality of screening; (2) It can improve the smoothness of material screening, ensure the continuity of material movement trajectory, and improve the accuracy of recycling unqualified areas; (3) The iron removal unit can be used to perform preliminary magnetic screening on the material, thereby improving the purity of the material before entering the detection unit and ensuring the accuracy of the detection and screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric view of the present invention.

[0019] Figure 2 yes Figure 1 First axonometric view of the residual magnetism detection assembly.

[0020] Figure 3 yes Figure 1 Second isometric view of the residual magnetism detection component.

[0021] Figure 4 This is an action flow chart of Example 1.

[0022] Figure 5 yes Figure 4 Axonometric view of the active sorting unit.

[0023] Figure 6 yes Figure 4 Axonometric view of the fixed receiving unit.

[0024] Figure 7 This is an axonometric view of the iron removal unit in Example 2.

[0025] Figure 8 It is a cross-sectional view of the iron removal unit in Example 2.

[0026] Fig. 9 This is an axonometric view of the loading unit in Example 2.

[0027] Fig.10 This is an action flow chart of Example 3.

[0028] Fig.11 It is a structural schematic diagram of Example 4.

[0029] Fig.12 This is the action flow chart of Example 5.

[0030] Fig.13 It is a structural schematic diagram of Example 5.

[0031] Fig.14 This is an axonometric view of Example 6.

[0032] In the figure: 1Pre-processing component; 11 iron removal unit, 111 oblique magnetic conveyor belt, 112 low recovery point, 113 magnetic rotary belt, 114 non-magnetic conveyor belt, 1141 magnetic conveying part, 1142 non-magnetic unloading part, 115 scraper conveyor belt, 116 impurity outlet tray, 117 transfer unit; 12 feeding unit, 121 feeding conveyor belt, 122 feeding guide trough, 123 feeding drive member; 13 classification conveying channel, 131 fine screening channel, 132 multi-stage magnetic separation component, 133 coarse screening channel, 134 hanging iron remover, 14 mixing hopper; 2 residual magnetic detection component, 21 scraper unit, 22 detection unit, 221 magnetic shielding tube, 2211 probe, 222 active compensation coil, 23 detection discharging part; 3 sorting components, 31 movable sorting unit, 311 sorting hopper, 312 oblique sedimentation plate, 3121 sedimentation drive unit, 3122 telescopic rod, 3123 slide, 313 independent sedimentation plate, 314 lifting baffle, 32 fixed receiving unit, 321 unloading chute, 33 impurity unloading unit, 34 finished product unloading unit, 341 unloading lifting conveyor belt, 342 unloading conveyor belt, 35 sorting bracket, 36 screw stepping motor; 4Control room. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Embodiment 1: like Figure 1 , 2 , 3, a magnetic material screening and residual magnetism detection equipment, including: Pre-treatment component 1: capable of preliminary impurity filtration of materials; Residual magnetism detection component 2: includes a scraping unit 21 and a detection unit 22. The material enters the detection unit 22 after being scraped flat by the scraping unit 21. The area where the scraped material is detected by the detection unit 22 as a non-conforming area. Sorting component 3: includes a movable sorting unit 31 and a fixed material receiving unit 32. When the unqualified area moves to the sorting component 3, the movable sorting unit 31 receives the material on the unqualified area. By arranging the scraping unit 21 on the front side of the detection unit 22, the uniformity of the material on the conveyor belt can be ensured, and the detection quality of the subsequent detection unit 22 is improved. The detection signal of the detection unit 22 is used to drive the movable sorting unit 31 in the sorting component 3 to move, so that all the materials on the unqualified area are received, and the materials received by the fixed material receiving unit 32 are all qualified areas, and the qualified area is the area where no magnetic material is detected by the detection unit 22, thereby improving the accuracy of screening.

[0035] like Figure 4 , 5 As shown in , 6, the residual magnetism detection assembly 2 includes a detection discharge part 23, a fixed material receiving unit 32 includes a material discharge chute 321 arranged below the detection discharge part 23, and a movable sorting unit 31 includes a sorting hopper 311, and the sorting hopper 311 can move between the material discharge chute 321 and the detection discharge part 23. By the movement of the sorting hopper 311, the receiving part for the material falling in the detection discharge part 23 is changed. When the sorting hopper 311 moves between the detection discharge part 23 and the material discharge chute 321, the discharge in the detection discharge part 23 is intercepted by the sorting hopper 311 and cannot enter the material discharge chute 321. This part is the material in the unqualified area; when the sorting hopper 311 returns to its position, the material in the qualified area is received by the material discharge chute 321.

[0036] The assembly and working process of the magnetic material screening and residual magnetism detection equipment in this embodiment are as follows: after the material is initially screened by the pre-processing component 1, it is transferred to the residual magnetism detection component 2, wherein the residual magnetism detection component 2 is provided with a scraper unit 21 and a detection unit 22. After entering the residual magnetism detection component 2, the material will first be further scraped by the scraper unit 21, thereby ensuring that the material can be evenly laid before entering the detection unit 22, thereby improving the detection accuracy of the detection unit 22 on the material. In this embodiment, the detection unit 22 includes a magnetic shielding tube 221 and an active compensation coil 222, wherein the active compensation coil 222 is arranged on the outside of the magnetic shielding tube 221, which can further reduce the interference of the magnetic field environment outside the tube on the residual magnetism inside the tube, and a probe 2211 is arranged in the magnetic shielding tube 221, which can detect the residual magnetism of the material, wherein the detection component can detect whether the material contains magnetic substances, and when the material is magnetic, it is determined that the material being detected at this time is unqualified material, and the detected area is defined as an unqualified area, and at the same time, a signal is transmitted to control the subsequent The active sorting unit 31 in the sorting component 3 is in action. Since the movement speed of the conveyor belt in the residual magnetism detection component 2 is constant, the active sorting unit 31 can be in action and receive the material in the unqualified area when the material in the unqualified area is transferred to the area after an appropriate delay. After receiving the material in the unqualified area, the active sorting unit 31 is retracted to ensure that the remaining material can enter the fixed material receiving unit 32 normally. Therefore, the material in the fixed material receiving unit 32 is the non-magnetic material detected by the detection unit 22.

[0037] Furthermore, in the present embodiment, the fixed material receiving unit 32 includes a material discharge chute 321 arranged below the detection and discharge part 23, and the material discharge chute 321 is in the shape of a hopper. With the movement of the conveyor belt, the material falls from the detection and discharge part 23 into the material discharge chute 321 for recovery, wherein the sorting component 3 includes an impurity material discharge unit 33 and a finished product material discharge unit 34, wherein the impurity material discharge unit 33 is connected to the movable sorting unit 31, and the finished product material discharge unit 34 is connected to the fixed material receiving unit 32, wherein the finished product material discharge unit 34 includes a material discharge lifting conveyor belt 341, and the qualified material recovered from the material discharge chute 321 can be lifted again onto the material discharge conveyor belt 342 through the material discharge lifting conveyor belt 341, and directly transported to the warehouse or other materials and transportation equipment.

[0038] The movable sorting unit 31 in the present embodiment includes a sorting hopper 311, which is directly driven by a driving member (for example, a cylinder, a motor). The driving member in the present embodiment is a screw stepping motor 36, which drives the sorting hopper 311 to move, wherein the movement path of the sorting hopper 311 is between the detection discharge part 23 and the fixed material receiving unit 32 in the vertical direction. When the driving member drives the sorting hopper 311 to move below the detection discharge part 23, unqualified materials dropped from the detection discharge part 23 will be received by the sorting hopper 311, and will drop onto the impurity unloading unit 33 through the sorting hopper 311. When all the materials in the unqualified area are received, the sorting hopper 311 returns to its initial position driven by the driving member. When the sorting hopper 311 moves to the bottom of the detection discharge part 23, the hopper outlet of the sorting hopper 311 faces the impurity discharge unit 33. Furthermore, the sorting hopper 311 is slidably connected to the sorting bracket 35. The sorting bracket 35 is used to support the sorting hopper 311 and stabilize the vertical position of the sorting hopper 311 between the detection discharge part 23 and the discharge chute 321. In this embodiment, by providing a movable sorting unit 31, when unqualified substances are detected, all materials in the unqualified area can be completely received to avoid unqualified substances from mixing into qualified products, thereby ensuring the quality of screening.

[0039] Embodiment 2: like Figure 7 , 8 As shown in Figure 9, the pre-processing unit includes an iron removal unit 11, and the iron removal unit 11 includes an oblique magnetic conveyor belt 111. The oblique magnetic conveyor belt 111 includes a recycling lower part 112, and a transfer unit 117 for receiving non-magnetic materials is arranged on the recycling lower part 112. The oblique magnetic conveyor belt 111 includes a magnetic rotary belt 113 and a non-magnetic conveyor belt 114. The non-magnetic conveyor belt 114 includes a magnetic conveying part 1141 in contact with the magnetic rotary belt 113, and the non-magnetic conveyor belt 114 includes a non-magnetic unloading part 1142 with a gap between the magnetic rotary belt 113 and the magnetic material moves from the magnetic conveying part 1141 to the non-magnetic unloading part 1142 on the non-magnetic conveyor belt 114. The iron removal unit 11 includes a scraper conveyor belt 115, and the scraper conveyor belt 115 is connected to the middle part of the oblique magnetic conveyor belt 111.

[0040] The iron removal unit 11 is used to perform preliminary sorting and screening by utilizing the material's own gravity and the magnetic attraction characteristics of the magnetic material in the material. By dividing the non-magnetic conveyor belt 114 into a magnetic conveying section 1141 and a non-magnetic discharge section 1142, the adsorbed magnetic material can be separated in the non-magnetic discharge section 1142, thereby realizing the recovery of the magnetic material. The scraper conveyor belt 115 is designed to dock with the middle part of the oblique magnetic suction conveyor belt 111, thereby ensuring that both the non-magnetic material and the magnetic material have sufficient time for screening.

[0041] The assembly and working process of the magnetic material screening and residual magnetism detection equipment in this embodiment are as follows: In this embodiment, according to the order of material operation, the entire device includes a pre-processing unit, a residual magnetism detection component 2, and a sorting component 3, wherein the pre-processing component 1 in this embodiment includes an iron removal unit 11, and further, since the iron removal unit 11 is arranged at the front end, the pre-processing component 1 in this embodiment includes a loading unit 12, wherein the loading unit 12 is connected to the iron removal unit 11, and the loading component transports the material to the iron removal unit 11 for preliminary filtering of the material, wherein the loading component includes a loading conveyor belt 121, and the entire loading conveyor belt 121 is tilted upward, so that the material can be lifted to a suitable height and then transferred to the iron removal unit 11, wherein a plurality of lateral protrusions are arranged on the loading conveyor belt 121, and the lateral protrusions can provide a support effect in the process of tilting upwardly transporting the material, thereby ensuring the stable transportation of the material in the process of conveying the material flow by the loading conveyor belt 121. A loading guide trough 122 is provided at the end of the loading conveyor belt 121, and the material is guided to the loading conveyor belt 121 through the loading guide trough 122 to avoid leakage during the loading process. A loading drive 123 is provided at the bottom of the loading unit 12, and the loading conveyor belt 121 is driven to rotate by the loading drive 123, so that the material can be continuously lifted to the iron removal unit 11.

[0042] The iron removal unit 11 includes a scraper conveyor belt 115, which is arranged at a relatively high position. The scraper conveyor belt 115 is connected to the loading unit 12, and a scraper rod is arranged on the scraper conveyor belt 115, wherein the scraper rod is arranged in a "V"-shaped structure, and the tip of the scraper rod is facing in the opposite direction of the material conveying direction. During operation, the scraper conveyor belt 115 will be flattened on the scraper conveyor belt 115 after driving the material through the scraper rod, so that the material can be evenly and continuously conveyed backwards. An oblique magnetic conveyor belt 111 is arranged behind the scraper conveyor belt 115, wherein the oblique magnetic conveyor belt 111 is arranged obliquely, so the oblique magnetic conveyor belt 111 includes a recovery bottom 112 at a relatively low position. Since the entire oblique magnetic conveyor belt 111 is arranged in an inclined manner, When the material on the loading conveyor belt 121 is transported to the inclined magnetic conveyor belt 111, it will move downward due to the action of gravity. Since the inclined magnetic conveyor belt 111 includes a magnetic rotating belt 113, when the material is transported to the inclined magnetic conveyor belt 111, a magnetic attraction effect will be generated on the material. The magnetic material in the material will adhere to the inclined magnetic conveyor belt 111 when affected by the magnetic attraction effect, and the remaining material that is not adsorbed by the magnetic conveyor belt (mostly non-magnetic material) will move toward the recovery low point 112 under the action of gravity. The conveying direction of the inclined magnetic conveyor belt 111 is clockwise in the figure, that is, the inclined magnetic conveyor belt 111 adsorbs the magnetic material and moves it toward the side away from the recovery low point 112, thereby transporting the magnetic material to the high position of the inclined magnetic conveyor belt 111. Furthermore, in the present embodiment, the oblique magnetic conveyor belt 111 is further connected to a non-magnetic conveyor belt 114 on the outside of the magnetic rotary belt 113, wherein the non-magnetic conveyor belt 114 does not produce a magnetic attraction effect, and when the non-magnetic conveyor belt 114 is attached to the magnetic rotary belt 113, since the distance to the magnetic rotary belt 113 is too close, the magnetic rotary belt 113 can produce an adsorption effect on the magnetic material in the material through the non-magnetic conveyor belt 114, that is, the non-magnetic conveyor belt 114 includes a magnetic conveying portion 1141 attached to the magnetic rotary belt 113, and the magnetic material is adsorbed and transported to a high position of the oblique magnetic conveyor belt 111 through the magnetic conveying portion 1141, and the non-magnetic The position where the conveyor belt 114 does not contact the magnetic rotary belt 113 is the non-magnetic material discharge section 1142. On the non-magnetic material discharge section 1142, since the non-magnetic conveyor belt 114 does not contact the magnetic rotary belt 113, and since the material is transported on the non-magnetic conveyor belt 114, the magnetic effect of the magnetic rotary belt 113 cannot be transmitted to the material on the non-magnetic material discharge section 1142, and the magnetic material loses its magnetic effect on the non-magnetic material discharge section 1142, so that the magnetic material falls off on the non-magnetic material discharge section 1142, and an impurity discharge tray 116 is placed below the non-magnetic material discharge section 1142 for collecting impurities falling off from the non-magnetic material discharge section 1142.

[0043] A transfer unit 117 is provided at the recycling lower part 112, wherein the transfer unit 117 can transport the preliminary screening materials that rely on their own gravity to the recycling lower part 112 to the next workstation. In this embodiment, the transfer unit 117 includes an iron removal lifting conveyor belt, wherein since the preliminary screening materials move to the recycling lower part 112 driven by gravity, the position of the materials received by the transfer unit 117 is at a lower position, so it is necessary to further lift the materials again through the iron removal lifting conveyor belt to facilitate docking with the subsequent residual magnetism detection component 2. In this embodiment, the transfer unit 117 also includes a material guide tray, wherein the material guide tray can guide the material in the process of moving from the recycling lower part 112 to the iron removal lifting conveyor belt. In this embodiment, after preliminary screening by the iron removal unit 11, the material that obviously has magnetism in it can be preliminarily screened and filtered, thereby obtaining a relatively clean non-magnetic material. In this embodiment, a scraper conveyor belt 115 is added to the iron removal unit 11, thereby ensuring uniform laying of the material, avoiding the material from being transported in a pile, and at the same time flattening and thinning the material, further improving the magnetic adsorption effect of the magnetic rotary belt 113 on the material, and improving the quality of screening.

[0044] After the material is initially screened by the iron removal unit 11, it is transferred to the residual magnetism detection component 2, wherein the residual magnetism detection component 2 is provided with a scraper unit 21 and a detection unit 22. After entering the residual magnetism detection component 2, the material will first be further scraped flat by the scraper unit 21, thereby ensuring that the material can be evenly laid before entering the detection unit 22, thereby improving the detection accuracy of the material by the detection unit 22. In this embodiment, the detection unit 22 includes a magnetic shielding tube 221 and an active compensation coil 222, wherein the active compensation coil 222 is arranged on the outside of the magnetic shielding tube 221, which can further reduce the interference of the magnetic field environment outside the tube on the residual magnetism inside the tube, and a probe 2211 is arranged in the magnetic shielding tube 221, which can detect the residual magnetism of the material, wherein the detection component can detect whether the material contains magnetic substances, and when the material is magnetic, it is determined that the material being detected at this time is unqualified material, and the detected area is defined as an unqualified area, and at the same time, a signal is transmitted to control the subsequent The active sorting unit 31 in the sorting component 3 is in action. Since the movement speed of the conveyor belt in the residual magnetism detection component 2 is constant, the active sorting unit 31 can be in action and receive the material in the unqualified area when the material in the unqualified area is transferred to the area after an appropriate delay. After receiving the material in the unqualified area, the active sorting unit 31 is retracted to ensure that the remaining material can enter the fixed material receiving unit 32 normally. Therefore, the material in the fixed material receiving unit 32 is the non-magnetic material detected by the detection unit 22.

[0045] Furthermore, in the present embodiment, the fixed material receiving unit 32 includes a material discharge chute 321 arranged below the detection and discharge part 23, and the material discharge chute 321 is in the shape of a hopper. With the movement of the conveyor belt, the material falls from the detection and discharge part 23 into the material discharge chute 321 for recovery, wherein the sorting component 3 includes an impurity material discharge unit 33 and a finished product material discharge unit 34, wherein the impurity material discharge unit 33 is connected to the movable sorting unit 31, and the finished product material discharge unit 34 is connected to the fixed material receiving unit 32, wherein the finished product material discharge unit 34 includes a material discharge lifting conveyor belt 341, and the qualified material recovered from the material discharge chute 321 can be lifted again onto the material discharge conveyor belt 342 through the material discharge lifting conveyor belt 341, and directly transported to the warehouse or other materials and transportation equipment.

[0046] The movable sorting unit 31 in the present embodiment includes a sorting hopper 311, which is directly driven by a driving member (for example, a cylinder, a motor). The driving member in the present embodiment is a screw stepping motor 36, which drives the sorting hopper 311 to move, wherein the movement path of the sorting hopper 311 is between the detection discharge part 23 and the fixed material receiving unit 32 in the vertical direction. When the driving member drives the sorting hopper 311 to move below the detection discharge part 23, unqualified materials dropped from the detection discharge part 23 will be received by the sorting hopper 311, and will drop onto the impurity unloading unit 33 through the sorting hopper 311. When all the materials in the unqualified area are received, the sorting hopper 311 returns to its initial position driven by the driving member.

[0047] In this embodiment, by providing an active sorting unit 31, when unqualified substances are detected, all materials in the unqualified area can be completely received to avoid the unqualified substances from being mixed into qualified products, thereby ensuring the quality of screening.

[0048] Embodiment 3: like Fig.10 As shown, different from Example 1, in this embodiment, the residual magnetic detection component 2 includes a detection discharge part 23, the movable sorting unit 31 includes an oblique settling plate 312 docked with the detection discharge part 23, and the fixed material receiving unit 32 docks with the oblique settling plate 312. By setting the oblique settling plate 312, the material movement path in the unqualified area can be controlled by relying on the inclination of the oblique settling plate 312, so that the continuity of the material transportation path can be improved, and the accuracy of material transportation can be controlled. The unqualified area can be recovered by controlling the oblique settling plate 312 to rotate the starting position and reset the end position to cover the unqualified area, thereby avoiding the back and forth movement of the sorting hopper 311, which causes the material to spill on the side wall of the sorting hopper 311, causing confusion in the material sorting effect, or the need to additionally recover some materials in the qualified area to avoid confusion, thereby improving the accuracy of sorting.

[0049] The assembly and working process of the magnetic material screening and residual magnetism detection equipment in this embodiment are as follows: In this embodiment, the movable sorting unit 31 is arranged to be aligned and tangent to the detection discharge part 23, and the entire movable sorting unit 31 is arranged at an angle, so that the material can move downward along the movable sorting unit 31 after coming out of the detection discharge part 23, and an inclined sedimentation plate 312 is arranged on the movable sorting unit 31. The inclined sedimentation plate 312 in this embodiment is hinged on the movable sorting unit 31, and the inclined sedimentation plate 312 is connected to the sedimentation drive unit 3121, wherein the inclined sedimentation plate A slide groove 3123 is provided on 312, and the sedimentation drive unit 3121 is connected to the slide groove 3123 through the telescopic rod 3122. The telescopic rod 3122 is driven to move by the sedimentation drive unit 3121, so that the end of the telescopic rod 3122 can change the relative position in the slide groove 3123. Since the inclined sedimentation plate 312 is hinged on the movable sorting unit 31, the inclined sedimentation plate 312 can be driven to rotate relative to each other, and then the relative inclination angle of the inclined sedimentation plate 312 can be changed, so that the material can move along the inclination direction of the inclined sedimentation plate 312. The ends of the inclined sedimentation plate 312 are connected to the impurity unloading unit 33 and the finished product unloading unit 34. When the telescopic rod 3122 remains in an extended state, the inclined sedimentation plate 312 and the finished product unloading unit 34 are docked; when the telescopic rod 3122 remains in a contracted state, the inclined sedimentation plate 312 tilts and rotates and remains docked with the impurity unloading unit 33; thereby, the material on the unqualified area can enter the impurity unloading unit 33.

[0050] In this embodiment, an inclined sedimentation plate 312 is provided to maintain continuous material transportation. During use, when the material in the unqualified area moves to the inclined sedimentation plate 312, the inclined sedimentation plate 312 rotates, and after all the material in the unqualified area enters, the inclined sedimentation plate 312 is reset to maintain the continuity of material transportation.

[0051] Embodiment 4: like Fig.11 As shown, different from Example 1, the oblique settling plate 312 in this embodiment includes a plurality of independent settling plates 313, and the arrangement direction of each independent settling plate 313 is staggered with the material movement direction. When the material on the unqualified area moves to the corresponding independent settling plate 313, the independent settling plate 313 can settle independently. By providing the independent settling plates 313, the recovery accuracy of the unqualified area can be improved.

[0052] The assembly and working process of the magnetic material screening and residual magnetism detection equipment in this embodiment are as follows: In this embodiment, the movable sorting unit 31 is arranged to be aligned and tangent to the detection discharge part 23, and the entire movable sorting unit 31 is arranged at an angle, so that the material can move downward along the movable sorting unit 31 after coming out of the detection discharge part 23, and an inclined sedimentation plate 312 is arranged on the movable sorting unit 31. The inclined sedimentation plate 312 in this embodiment is hinged on the movable sorting unit 31, and the inclined sedimentation plate 312 is connected to the sedimentation drive unit 3121, wherein the inclined sedimentation plate A slide groove 3123 is provided on 312, and the sedimentation drive unit 3121 is connected to the slide groove 3123 through the telescopic rod 3122. The telescopic rod 3122 is driven to move by the sedimentation drive unit 3121, so that the end of the telescopic rod 3122 can change the relative position in the slide groove 3123. Since the inclined sedimentation plate 312 is hinged on the movable sorting unit 31, the inclined sedimentation plate 312 can be driven to rotate relative to each other, and then the relative inclination angle of the inclined sedimentation plate 312 can be changed, so that the material can move along the inclination direction of the inclined sedimentation plate 312. The ends of the inclined sedimentation plate 312 are connected to the impurity unloading unit 33 and the finished product unloading unit 34. When the telescopic rod 3122 remains in an extended state, the inclined sedimentation plate 312 and the finished product unloading unit 34 are docked; when the telescopic rod 3122 remains in a contracted state, the inclined sedimentation plate 312 tilts and rotates and remains docked with the impurity unloading unit 33; thereby, the material on the unqualified area can enter the impurity unloading unit 33.

[0053] Furthermore, in the present embodiment, the inclined sedimentation plate 312 is arranged into a plurality of independent sedimentation plates 313, wherein each independent sedimentation plate 313 is arranged in parallel, and each independent sedimentation plate 313 is individually connected to a sedimentation drive unit 3121, and each independent sedimentation plate 313 is driven by the sedimentation drive unit 3121 to perform independent movement, wherein the lateral position of the unqualified area is determined through further precise detection by the detection unit 22, thereby controlling the corresponding independent sedimentation plate 313 to perform corresponding rotation and tilt, thereby specifically narrowing the demarcation of the unqualified area, improving the accuracy of detection and screening, and increasing the proportion of qualified materials.

[0054] In this embodiment, an inclined sedimentation plate 312 is provided to maintain continuous material transportation. During use, when the material in the unqualified area moves to the inclined sedimentation plate 312, the inclined sedimentation plate 312 rotates, and after all the material in the unqualified area enters, the inclined sedimentation plate 312 is reset to maintain the continuity of material transportation.

[0055] Embodiment 5: like Fig.12 , 13As shown, different from Example 1, in this embodiment, a lifting baffle 314 is provided on the movable sorting unit 31, and the lifting baffle 314 is arranged on the front side of the inclined sedimentation plate 312. When the independent sedimentation plate 313 descends, the lifting baffle 314 falls down and abuts against the movable sorting unit 31, blocking the materials on the corresponding path of the descending independent sedimentation plate 313, and the blocked materials are dispersed and transported to both sides.

[0056] When an unqualified area is detected and the independent settling plate 313 is controlled to move, in order to ensure that all materials in the unqualified area can be received, the material area received in a conventional manner needs to be larger than the unqualified area to achieve full coverage, thereby ensuring the integrity of the reception and avoiding the materials in the unqualified area from not being fully received, which will also cause a certain degree of waste. Therefore, in this embodiment, a lifting baffle 314 is provided, wherein the distance between the lifting baffle 314 and the independent settling plate 313 is the same as the length of the unqualified area. When the material in the unqualified area moves to the independent settling plate 313, After that, the position where the lifting baffle 314 abuts against the movable sorting unit 31 is the dividing line between the unqualified area and the qualified area, thereby ensuring that the unqualified area can completely enter the impurity unloading unit 33, and the materials in the qualified area on the corresponding path of the independent settling plate 313 move toward both sides. When the lifting baffle 314 is lifted, there is a certain gap between the unqualified area and the qualified area, thereby ensuring that the unqualified area can be completely received without receiving excess qualified areas, ensuring the accuracy of impurity recovery, further improving the accuracy of recovery, and increasing the acceptance ratio of finished materials.

[0057] Embodiment 6: In this embodiment, different from Embodiment 2, the pre-processing component 1 in this embodiment includes a plurality of graded conveying channels 13, and the materials are divided into a plurality of classified materials according to their types. Each classified material enters a corresponding graded conveying channel 13, and the classified materials in each graded conveying channel 13 are gathered in front of the residual magnetic detection component.

[0058] In this embodiment, two conveying channels are provided, including a fine screening channel 131 and a coarse screening channel 133, wherein a multi-stage magnetic separation component 132 is provided on the fine screening channel 131, and a more detailed iron removal operation can be achieved through the multi-stage magnetic separation component 132, while only a hanging iron remover 134 is provided on the primary screening channel, and only simple screening is performed; the material in this embodiment is composed of sand and gravel, wherein the sand enters the fine screening channel 131 for screening by the multi-stage magnetic separation component 132 (it can also be removed by the iron removal unit in Example 2), so as to remove as much ferromagnetic material in the sand as possible, and the gravel itself has a low iron content, Therefore, only the subsequent residual magnetism detection component is required to perform detection and screening, and only the suspended iron remover 134 is required to perform preliminary screening. Therefore, in the material composed of sand and gravel, the gravel can be screened faster, and there is no need to mix it with the sand for fine screening, thereby improving the screening efficiency; finally, the classified materials passing through the fine screening channel 131 and the coarse screening channel 133 are mixed in the mixing hopper 14 and transported to the residual magnetism detection component; in this embodiment, a control room 4 is provided on the side of the device, and the control room 4 can control the overall operation, especially the control and monitoring of the residual magnetism detection component 2, the sorting component 3, and the sensor probe detection operation.

Claims

1. A magnetic material screening and residual magnetism detection equipment, characterized in that: Included are: Pre-treatment component (1): capable of preliminary impurity filtration of the material; The residual magnetism detection component (2) comprises a scraping unit (21) and a detection unit (22). The material enters the detection unit (22) after being scraped flat by the scraping unit (21). The area of ​​the scraped material where magnetic substances are detected by the detection unit (22) is an unqualified area. The sorting component (3) comprises a movable sorting unit (31) and a fixed material receiving unit (32). When the unqualified area moves to the sorting component (3), the movable sorting unit (31) receives the material on the unqualified area.

2. A magnetic material screening and residual magnetism detection equipment according to claim 1, characterized in that: The residual magnetism detection component (2) includes a detection discharge portion (23), the fixed material receiving unit (32) includes a material discharge chute (321) arranged below the detection discharge portion (23), and the movable sorting unit (31) includes a sorting hopper (311), and the sorting hopper (311) can move between the material discharge chute (321) and the detection discharge portion (23).

3. The magnetic material screening and residual magnetism detection equipment according to claim 1, characterized in that: The residual magnetism detection component (2) comprises a detection discharge portion (23), the movable sorting unit (31) comprises an oblique settling plate (312) docked with the detection discharge portion (23), and the fixed material receiving unit (32) docked with the oblique settling plate (312).

4. A magnetic material screening and residual magnetism detection equipment according to claim 3, characterized in that: The oblique settling plate (312) includes a plurality of independent settling plates (313), and the arrangement direction of each independent settling plate (313) is staggered with the material movement direction. When the material on the unqualified area moves to the corresponding independent settling plate (313), the independent settling plate (313) can settle independently.

5. A magnetic material screening and residual magnetism detection equipment according to any one of claims 1 to 4, characterized in that: The pre-processing unit comprises an iron removal unit (11), the iron removal unit (11) comprises an oblique magnetic conveyor belt (111), the oblique magnetic conveyor belt (111) comprises a recovery lower part (112), and a transfer unit (117) for receiving non-magnetic materials is arranged on the recovery lower part (112).

6. The magnetic material screening and residual magnetism detection equipment according to claim 5, characterized in that: The oblique magnetic conveyor belt (111) comprises a magnetic rotary belt (113) and a non-magnetic conveyor belt (114); the non-magnetic conveyor belt (114) comprises a magnetic conveying portion (1141) in contact with the magnetic rotary belt (113); the non-magnetic conveyor belt (114) comprises a non-magnetic discharge portion (1142) having a gap with the magnetic rotary belt (113); and the magnetic material moves from the magnetic conveying portion (1141) to the non-magnetic discharge portion (1142) on the non-magnetic conveyor belt (114).

7. A magnetic material screening and residual magnetism detection equipment according to any one of claims 1 to 4, characterized in that: The pre-processing component (1) includes a plurality of grading conveying channels (13), and the materials are divided into a plurality of classified materials according to their types. Each classified material enters a corresponding grading conveying channel (13), and the classified materials in each grading conveying channel (13) are collected in front of the residual magnetism detection component (2).

8. A method for using screening equipment, using a magnetic material screening and residual magnetism detection equipment as claimed in any one of claims 1 to 7, characterized in that: The following steps are included: S1, the pre-processing component (1) performs preliminary impurity screening and filtering on the material, and the filtered material enters the residual magnetism detection component (2); S2, the residual magnetic detection component (2) scrapes the material flat; S3, the scraped material enters the detection unit (22) for magnetic detection; S4, after the detection unit (22) detects the presence of magnetic material, it defines the area as an unqualified area and sends a signal to the active sorting unit (31); S5. The materials in the unqualified area are intercepted and collected by the movable sorting unit (31) before entering the fixed material receiving unit (32).

9. A method for using a screening device according to claim 8, characterized in that: In step S5, after the active sorting unit (31) receives the signal from the detection unit (22), when the unqualified area of ​​the material is about to move from the detection discharge part (23) to the discharge chute (321), the sorting hopper (311) is driven to move between the detection discharge part (23) and the discharge chute (321), and returns after receiving all the materials on the unqualified area.

10. The method for using the screening equipment according to claim 8, characterized in that: In step S5, after the active sorting unit (31) receives the signal from the detection unit (22), when the unqualified area of ​​the material moves to the inclined settling plate (312), the inclined settling plate (312) tilts downward and settles to collect the material on the unqualified area.

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