Conveyor belt and material screening equipment

Abstract

The utility model relates to a conveying belt and material screening equipment. The conveying belt comprises a conveying belt body, a strip-shaped groove is formed in the conveying belt body in the thickness direction of the conveying belt body, and the length direction of the strip-shaped groove is parallel to the length direction of the conveying belt body. The two sides of each strip-shaped groove are provided with groove side faces, in the width direction of the strip-shaped grooves, the groove side faces located on the two sides of the strip-shaped grooves are symmetrically arranged based on the central datum plane of the strip-shaped grooves, and in the thickness direction of the conveying belt body, the groove side faces are obliquely arranged towards the upper end face of the conveying belt body. The groove side surfaces are symmetrically arranged on the conveyor belt body based on the central reference surface of the strip-shaped groove, and the groove side surfaces are inclined surfaces, so that the position of the material in the width direction of the conveyor belt body can be determined.

Description

Technical Field

[0001] The present application relates to the technical field of conveyor belts, and in particular to a conveyor belt and material screening equipment. Background Art

[0002] The conveyor belt includes a conveyor belt body. In the thickness direction of the conveyor belt body, the upper end surface of the conveyor belt body is the transmission belt surface, which is used to carry the material placed on the conveyor belt, and the lower end surface of the conveyor belt body is the part that contacts the transmission roller.

[0003] Since the transmission belt surface is flat, when the machine puts the material onto the transmission belt surface, the material rolls and moves after contacting the transmission belt surface, making it difficult to determine the position of the material in the width direction of the transmission belt surface (i.e. the width direction of the conveyor belt body). Utility Model Content

[0004] Based on this, it is necessary to provide a conveyor belt to solve the problem that it is difficult to control the position of materials in the width direction of the transmission belt surface.

[0005] A conveyor belt includes a conveyor belt body, which is provided with a strip groove in the thickness direction of the conveyor belt body, and the length direction of the strip groove is parallel to the length direction of the conveyor belt body; each of the strip grooves has groove side faces on both sides, and in the width direction of the strip groove, the groove side faces respectively located on both sides of the strip groove are symmetrically arranged based on the central reference plane of the strip groove, and in the thickness direction of the conveyor belt body, the groove side faces are inclined toward the upper end face of the conveyor belt body.

[0006] In one embodiment, in the width direction of the strip groove, the distance between the lower edges of the two groove sides is H1, and the distance between the upper edges of the two groove sides is H2, satisfying the relationship: 0mm≤H1≤15mm, 30mm≤H2≤50mm.

[0007] In one embodiment, the number of the strip grooves is configured to be multiple, and the multiple strip grooves are arranged in sequence along the width direction of the conveyor belt body; in two adjacent strip grooves, the upper edges of the two adjacent groove sides overlap.

[0008] The above-mentioned conveyor belt is provided with groove side surfaces symmetrically arranged based on the central reference plane of the strip groove on the conveyor belt body, and the groove side surfaces are inclined surfaces, so that the position of the material in the width direction of the conveyor belt body can be determined.

[0009] The present application further proposes a material screening device, which includes a material supply module, a material detection module and a rejection device.

[0010] The material supply module includes a vibrating feeder and a belt conveyor, the belt conveyor includes the conveyor belt in some of the above embodiments, and the vibrating feeder is configured to evenly distribute the material in the hopper of the vibrating feeder on the conveyor belt;

[0011] The material detection module includes an identification device group, wherein each identification device group includes two first cameras, and the two first cameras are spaced apart in the conveying direction of the belt conveyor to form a material detection channel; the belt conveyor is configured to drive materials scattered on the conveyor belt to the material detection channel, and the first cameras are configured to identify materials containing impurities in the material detection channel to generate a rejection signal;

[0012] The rejection device includes a rejection cone head. In the height direction of the material screening equipment, the rejection cone head is arranged below the material detection channel, and the axial center line of the rejection cone head coincides with the center reference plane of the strip groove. The rejection device is configured to drive the rejection cone head to move according to the rejection signal so that the rejection cone head can reject materials doped with impurities.

[0013] In one embodiment, the material screening device further comprises: a material receiving module, the material receiving module comprising a first conveyor and a second conveyor, the first conveyor and the second conveyor being arranged in sequence in the length direction of the material screening device;

[0014] Among them, in the height direction of the material screening equipment, the first conveyor is arranged directly below the material detection channel, and in the length direction of the material screening equipment, the second conveyor is arranged on the side of the first conveyor away from the rejection device.

[0015] In one embodiment, the material receiving module further includes a second camera, which is disposed above the first conveyor and / or the second conveyor, and the second camera is configured to monitor the material accumulation status of the first conveyor and / or the second conveyor to generate a start signal, and the first conveyor and / or the second conveyor is configured to operate according to the start signal.

[0016] In one embodiment, the identification device group further includes at least two fill lights, and at least one fill light is provided on one side of each first camera.

[0017] In one embodiment, the rejection device includes at least one cone head group, the cone head group includes a plurality of rejection cone heads arranged in sequence along the width direction of the rejection device, and the plurality of rejection cone heads correspond one-to-one to the plurality of strip grooves respectively.

[0018] In one embodiment, the rejecting device includes a plurality of cone head groups, and two adjacent cone head groups are spaced apart in the height direction of the rejecting device.

[0019] In one embodiment, the material supply module further includes a loading conveyor configured to transport the material to the charging hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 3D is a perspective view of a conveyor belt according to an embodiment of the present application.

[0021] Figure 2 4 is a cross-sectional view of a conveyor belt according to an embodiment of the present application.

[0022] Figure 3 Schematic diagram of the structure of a material screening device according to an embodiment of the present application.

[0023] Figure 4 Schematic diagram of the positional relationship between the conveyor belt and the reject cone head according to one embodiment of the present application.

[0024] Figure Number:

[0025] 100. Conveyor belt;

[0026] 1. Conveyor belt body; 11. Strip groove; 110. Center reference plane; 111. Groove side; 111a. Lower edge; 111b. Upper edge; 112. Groove bottom;

[0027] 11a, first strip groove; 11b, second strip groove; 11c, third strip groove; 11d, fourth strip groove; 11e, fifth strip groove; 11f, sixth strip groove;

[0028] 200. Material screening equipment;

[0029] 21. Vibrating feeder; 21a. Loading hopper;

[0030] 22. Belt conveyor; 22a. Transmission roller;

[0031] 23. Loading conveyor; 23a. Feeding port; 23b. Discharging port;

[0032] 31. First camera; 32. Fill light; 33. Material detection channel;

[0033] 4. Rejection device; 40. Cone head group; 41. Rejection cone head; 41a. First rejection cone head; 41b. Second rejection cone head; 41c. Third rejection cone head; 41d. Fourth rejection cone head; 41e. Fifth rejection cone head; 41f. Sixth rejection cone head;

[0034] 51. First conveyor; 52. Second conveyor;

[0035] 6. Second camera;

[0036] S1, first motion trajectory; S2, second motion trajectory. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0043] See Figure 1 and Figure 2 As shown, a conveyor belt 100 provided in one embodiment of the present application includes a conveyor belt body 1. In the thickness direction of the conveyor belt body 1, the conveyor belt body 1 is provided with a strip groove 11, and the length direction of the strip groove 11 is parallel to the length direction of the conveyor belt body 1. Each strip groove 11 has groove side surfaces 111 on both sides. In the width direction of the strip groove 11, the groove side surfaces 111 located on both sides of the strip groove 11 are symmetrically arranged based on the central reference plane 110 of the strip groove 11, and in the thickness direction of the conveyor belt body 1, the groove side surfaces 111 are inclined toward the upper end surface of the conveyor belt body 1. It should be supplemented that, refer to Figure 1 and Figure 2 As shown, the X direction shown in the figure is the length direction of the conveyor belt 100, the Y direction shown in the figure is the width direction of the conveyor belt 100, and the Z direction shown in the figure is the thickness direction of the conveyor belt 100.

[0044] Combine Figure 1 and Figure 2 As shown, the structure of the conveyor belt body 1 in the unfolded state is belt-shaped. After the conveyor belt body 1 is wound along its length direction, the head end and the tail end of the conveyor belt body 1 are connected, thereby realizing the formation of the belt-shaped conveyor belt body 1 into a ring-shaped conveyor belt 100.

[0045] See Figure 1As shown, the longitudinal direction of the strip groove 11 is parallel to the longitudinal direction of the conveyor belt body 1. It can also be understood that the strip groove 11 extends along the longitudinal direction of the conveyor belt body 1. When the transmission roller 22a of the belt conveyor 22 rotates to drive the conveyor belt 100 to move along the winding direction of the conveyor belt body 1, the material located in the strip groove 11 moves along the longitudinal direction of the conveyor belt 100.

[0046] See Figure 2 As shown, the center reference plane 110 of the strip groove 11 is selected in the conveyor belt body 1. The center reference plane 110 is perpendicular to the width direction of the conveyor belt body 1, that is, the center reference plane 110 extends along the thickness direction and the length direction of the conveyor belt body 1. In the width direction of the strip groove 11, the two sides of the strip groove 11 (i.e. Figure 2 The groove side surfaces 111 (left and right sides shown in FIG) are symmetrical about the central reference plane 110. In the thickness direction of the conveyor belt body 1, the groove side surfaces 111 are inclined surfaces arranged toward the upper end surface of the conveyor belt body 1. It can also be understood that the cross-sectional shape of the strip groove 11 is V-shaped, that is, along the width direction of the strip groove 11, the distance between the upper edges 111b of the two groove side surfaces 111 is greater than the distance between the lower edges 111a.

[0047] See Figure 2 As shown, during the process of placing material into the strip groove 11, since the groove side surface 111 is inclined toward the upper end surface of the conveyor belt body 1, the groove side surface 111 guides the material in the depth direction of the strip groove 11, allowing the material to move along the groove side surface 111 from the upper edge 111b of the groove side surface 111 to the lower edge 111a of the groove side surface 111. When the material abuts and contacts both groove side surfaces 111 in the strip groove 11, the groove side surfaces 111 restrict the material from moving in the depth and width directions of the strip groove 11. It can also be understood that at this time, the material is in a stationary state in the depth and width directions of the strip groove 11.

[0048] In addition, since the two groove side surfaces 111 in the strip groove 11 are symmetrically arranged based on the center reference plane 110, when the material is in contact with both groove side surfaces 111, the material will inevitably coincide with the center reference plane 110 in the width direction of the strip groove 11. When designing the conveyor belt body 1, since the position of the strip groove 11 in the width direction of the conveyor belt body 1 has been determined, that is, the position of the center reference plane 110 in the width direction of the conveyor belt body 1 is a known condition, the groove side surfaces 111 are used to drive the material to coincide with the center reference plane 110, so that the position of the material in the width direction of the conveyor belt body 1 can be determined. It should also be noted that, refer to Figure 2 As shown, the strip groove 11 according to the present application can also meet the requirement of coinciding materials of different sizes with the central reference plane 110 .

[0049] Therefore, according to the conveyor belt 100 of the present application, the groove side 111 is symmetrically arranged based on the central reference plane 110 of the strip groove 11 on the conveyor belt body 1, and the groove side 111 is an inclined surface, so that the position of the material in the width direction of the conveyor belt body 1 can be determined.

[0050] In some embodiments of the present application, see Figure 2 As shown, in the width direction of the strip groove 11, the distance between the lower edges 111a of the two groove side surfaces 111 is H1, and the distance between the upper edges 111b of the two groove side surfaces 111 is H2, which satisfies the relationship: 0mm≤H1≤15mm, 30mm≤H2≤50mm. Figure 2 As shown, when H1=0 mm, it can be understood that the lower edges 111 a of the two groove side surfaces 111 in the strip groove 11 coincide with each other. When 0

[0051] For example, the conveyor belt 100 can be used to transport raw salt. It should be noted that raw salt refers to crystals formed directly from seawater or other natural brine without processing and can be understood as being in block form. The maximum size of raw salt is typically 50 mm. Therefore, setting 0 mm ≤ H1 ≤ 15 mm and 30 mm ≤ H2 ≤ 50 mm ensures that larger raw salt can be placed in the strip groove 11 while also ensuring that smaller raw salt, when placed in the strip groove 11, coincides with the center reference plane 110.

[0052] It should be noted that, in the above embodiment, the conveyor belt 100 is used to transport raw salt as an example, but the present application is not limited to this. For example, the conveyor belt 100 can also be used to transport materials such as fruits. For different uses of the conveyor belt 100, the specific size of the strip groove 11 can be set according to specific needs.

[0053] In some embodiments of the present application, see Figure 2 As shown, the number of the strip grooves 11 is configured to be multiple, and the multiple strip grooves 11 are arranged in sequence along the width direction of the conveyor belt body 1. In two adjacent strip grooves 11, the upper edges 111b of the two adjacent groove side surfaces 111 overlap, so that in the upper end surface of the conveyor belt body 1, a table surface is avoided from being formed between the upper edges 111b of the two adjacent groove side surfaces 111, so as to ensure that the material can automatically fall into the strip groove 11 when the material is dropped from the top of the conveyor belt body 1, and avoid the use of manual placement to adjust the material to fall into the strip groove 11.

[0054] See Figure 3 and Figure 4 ​As shown, a material screening device 200 provided in one embodiment of the present application includes a material supply module, a material detection module and a rejection device 4. The material supply module includes a vibrating feeder 21 and a belt conveyor 22. The belt conveyor 22 includes the conveyor belt 100 in some of the above-mentioned embodiments. The vibrating feeder 21 is configured to evenly distribute the material in the loading hopper 21a of the vibrating feeder 21 on the conveyor belt 100. The material detection module includes an identification device group, wherein each identification device group includes two first cameras 31, and the two first cameras 31 are spaced apart in the conveying direction of the belt conveyor 22 to form a material detection channel 33. The belt conveyor 22 is configured to drive the material scattered in the conveyor belt 100 to the material detection channel 33. The first camera 31 is configured to identify the material doped with impurities in the material detection channel 33 to generate a rejection signal. In addition, the rejection device 4 includes a rejection cone head 41. In the height direction of the material screening equipment 200, the rejection cone head 41 is arranged below the material detection channel 33, and the axial center line of the rejection cone head 41 coincides with the center reference plane 110 of the strip groove 11. The rejection device 4 is configured to drive the rejection cone head 41 to move according to the rejection signal so that the rejection cone head 41 can reject materials doped with impurities.

[0055] For example, see Figure 3 As shown, along the length direction of the material screening equipment 200 ( Figure 3 In the X direction shown in the figure), the material supply module, the material detection module and the rejection device 4 are arranged in sequence. It can also be understood that the material supply module is arranged at the front end of the material detection module, and the material detection module is arranged at the rear end of the rejection device 4.

[0056] In the material supply module, the vibrating feeder 21 is arranged at the front end of the belt conveyor 22, and the loading hopper 21a of the vibrating feeder 21 is located above the belt conveyor 22. In this way, during the process of the loading hopper 21a vibrating and shaking the material, the material stored in the loading hopper 21a can be shaken out of the loading hopper 21a, and under the action of gravity, the material is evenly distributed on the conveyor belt 100. In addition, the length direction of the conveyor belt 100 is parallel to the length direction of the material screening device 200, that is, the conveying direction of the belt conveyor 22 is parallel to the length direction of the material screening device 200. It can also be understood that when the belt conveyor 22 is in operation, it drives the material on the conveyor belt 100 to move along the length direction of the material screening device 200. Figure 3 As shown, when the belt conveyor 22 is working, it drives the material on the conveyor belt 100 to move toward the material detection module, so that the material supply module can convey the material to the material detection module located at its rear end.

[0057] See Figure 3 As shown, in the height direction of the material screening equipment 200 (ie Figure 3In the Z direction shown in FIG, the detection channel is located below the belt conveyor 22, and the detection channel extends along the height direction of the material screening device 200. In this way, under the action of the belt conveyor 22, the material passes through the detection channel in a parabolic motion state, so that the first camera 31 is configured to identify the material passing through the material detection channel 33, and generate a rejection signal when the material doped with impurities passes through the material detection channel 33. It should be noted that, see Figure 3 As shown, Figure 3 The first motion trajectory S1 in the figure represents the parabolic motion of the material under the action of the belt conveyor 22. Furthermore, since each identification device group includes two first cameras 31, and the two first cameras 31 are symmetrically arranged along the length of the material screening device 200 and along the material detection channel 33, the two first cameras 31 can respectively capture image information of the material on both surfaces along the length of the material screening device 200, and use this image information to identify and determine whether the material is contaminated with impurities. If the material is contaminated with impurities, the first camera 31 generates a rejection signal.

[0058] See Figure 3 As shown, in the height direction of the material screening device 200, the reject cone head 41 is set below the material detection channel 33, and combined with Figure 4 As shown, the axial centerline of the reject cone 41 coincides with the central reference plane 110 of the strip groove 11, so that the reject cone 41 can be aligned with the material falling from the strip groove 11. It should be supplemented that, since the position of the material in the width direction of the conveyor belt body 1 can be determined, and the axial centerline of the reject cone 41 is set to coincide with the central reference plane 110 of the strip groove 11, the reject cone 41 can be aligned with the material falling from the strip groove 11.

[0059] When the rejecting device 4 receives the rejecting signal, the rejecting device 4 controls the rejecting cone 41 to move along the length direction of the material screening device 200 according to the time when the material falls to the height position of the corresponding rejecting cone 41, and the rejecting cone 41 hits the material moving along the first motion trajectory S1 and doped with impurities, so that the material doped with impurities moves along the second motion trajectory S2. It should be noted that, Figure 3 As shown, Figure 3 The second motion trajectory S2 in the figure is the parabolic motion trajectory of the material doped with impurities under the impact of the rejection cone 41. Therefore, the rejection cone 41 changes the motion trajectory of the material doped with impurities, so that the clean material continues to move along the first motion trajectory S1, while the motion trajectory of the material doped with impurities moves along the second motion trajectory S2, achieving the effect of separating the clean material from the material doped with impurities in a pile of materials.

[0060] In some embodiments, see Figure 3 As shown, the material screening device 200 may further include a material receiving module, which includes a first conveyor 51 and a second conveyor 52. The first conveyor 51 and the second conveyor 52 are arranged in sequence in the length direction of the material screening device 200. In the height direction of the material screening device 200, the first conveyor 51 is arranged directly below the material detection channel 33, and in the length direction of the material screening device 200, the second conveyor 52 is arranged on the side of the first conveyor 51 away from the rejection device 4, so that clean materials fall into the first conveyor 51 along the first motion trajectory S1, and materials doped with impurities fall into the second conveyor 52 along the second motion trajectory S2. Clean materials and materials doped with impurities can be transported to corresponding preset positions respectively through the first conveyor 51 and the second conveyor 52, which can also avoid the use of manual transportation and reduce labor costs.

[0061] In some embodiments, see Figure 3 As shown, the material receiving module also includes a second camera 6, which is arranged above the first conveyor 51 and / or the second conveyor 52. The second camera 6 is configured to monitor the material accumulation status of the first conveyor 51 and / or the second conveyor 52 to generate a start signal, and the first conveyor 51 and / or the second conveyor 52 is configured to work according to the start signal.

[0062] For example, see Figure 3 As shown, the second camera 6 is arranged above the first conveyor 51 and the second conveyor 52, so that the second camera 6 can be configured to simultaneously monitor the material accumulation status of the first conveyor 51 and the second conveyor 52, and the second camera 6 is controlled according to the material accumulation status of the first conveyor 51 and the second conveyor 52 to generate start signals for controlling the start of the first conveyor 51 and the second conveyor 52 respectively.

[0063] More specifically, for example, when the second camera 6 detects that the accumulated material on the first conveyor 51 has reached a certain volume, the second camera 6 sends a start signal to the first conveyor 51. After receiving the start signal, the first conveyor 51 starts working, thereby conveying the material on the first conveyor 51 to a preset position, thereby preventing the material from accumulating at the position where it falls into the first conveyor 51, thereby preventing the material from overflowing the first conveyor 51. When the second camera 6 detects that the accumulated material on the second conveyor 52 has reached a certain volume, the second camera 6 sends a start signal to the second conveyor 52. After receiving the start signal, the second conveyor 52 starts working, thereby conveying the material on the second conveyor 52 to a preset position, thereby preventing the material from accumulating at the position where it falls into the second conveyor 52, thereby preventing the material from overflowing the second conveyor 52.

[0064] It should be noted that, in some embodiments, the number of second cameras 6 can be configured as two, with one second camera 6 being disposed above the first conveyor 51 to monitor the material accumulation state of the first conveyor 51, and the other second camera 6 being disposed above the second conveyor 52 to monitor the material accumulation state of the second conveyor 52. It should be noted that the second camera 6 is not limited to being disposed directly above the first conveyor 51 and / or the second conveyor 52, but may also be disposed obliquely above.

[0065] See Figure 3 As shown, in one embodiment of the present application, in the height direction of the material screening equipment 200, the second camera 6 is set above the cone head group 40 with the highest height position in the rejection device 4 as an example for explanation. In this way, after the rejection cone head 41 hits the material doped with impurities, the second camera 6 can be prevented from affecting the material doped with impurities and falling into the second conveyor 52. It should be supplemented that, the application is not limited to this, and the specific position of the second camera 6 can be specifically set according to actual needs. The second camera 6 meets the requirements of being set above the first conveyor 51 and / or the second conveyor 52, ensuring that the second camera 6 can collect the material accumulation situation of the first conveyor 51 and / or the second conveyor 52, and being able to avoid the second camera 6 affecting the material falling into the first conveyor 51 and the second conveyor 52.

[0066] In some embodiments, see Figure 3 As shown, the recognition device group also includes at least two fill lights 32, with at least one fill light 32 provided on one side of each first camera 31. This can achieve a double-sided fill light effect, so that the first camera 31 can capture clearer and more detailed images under different lighting conditions, thereby improving the accuracy of image processing.

[0067] In some embodiments, combined Figure 3 and Figure 4 As shown, the rejecting device 4 includes at least one cone head group 40, and the cone head group 40 includes a plurality of rejecting cone heads 41 arranged in sequence along the width direction of the rejecting device 4, and the plurality of rejecting cone heads 41 correspond one-to-one to the plurality of strip grooves 11 respectively.

[0068] For example, see Figure 4 As shown, the conveyor belt 100 is provided with six strip grooves 11, including a first strip groove 11a, a second strip groove 11b, a third strip groove 11c, a fourth strip groove 11d, a fifth strip groove 11e, and a sixth strip groove 11f. Correspondingly, a group of cone heads 40 of the rejection device 4 is provided with six rejection cone heads 41, including a first rejection cone head 41a, a second rejection cone head 41b, a third rejection cone head 41c, a fourth rejection cone head 41d, a fifth rejection cone head 41e, and a sixth rejection cone head 41f.

[0069] And the axial center line of the first rejection cone head 41a coincides with the center reference plane 110 of the first strip groove 11a, the axial center line of the second rejection cone head 41b coincides with the center reference plane 110 of the second strip groove 11b, the axial center line of the third rejection cone head 41c coincides with the center reference plane 110 of the third strip groove 11c, the axial center line of the fourth rejection cone head 41d coincides with the center reference plane 110 of the fourth strip groove 11d, the axial center line of the fifth rejection cone head 41e coincides with the center reference plane 110 of the fifth strip groove 11e, and the axial center line of the sixth rejection cone head 41f coincides with the center reference plane 110 of the sixth strip groove 11f. In this way, the first rejecting cone head 41a is used to reject materials mixed with impurities from the materials falling from the first strip groove 11a, the second rejecting cone head 41b is used to reject materials mixed with impurities from the materials falling from the second strip groove 11b, the third rejecting cone head 41c is used to reject materials mixed with impurities from the materials falling from the third strip groove 11c, the fourth rejecting cone head 41d is used to reject materials mixed with impurities from the materials falling from the fourth strip groove 11d, the fifth rejecting cone head 41e is used to reject materials mixed with impurities from the materials falling from the fifth strip groove 11e, and the sixth rejecting cone head 41f is used to reject materials mixed with impurities from the materials falling from the sixth strip groove 11f.

[0070] Since the multiple rejection cone heads 41 correspond one-to-one with the multiple strip grooves 11, this effectively reduces the proportion of clean materials in the rejected materials, improves the screening accuracy, and avoids secondary screening. It should be noted that in the above example, the conveyor belt 100 is provided with six strip grooves 11, and a group of cone head groups 40 are correspondingly provided with six rejection cone heads 41 as an example for explanation, but the present application is not limited to this. The number of strip grooves 11 provided in the conveyor belt 100 can be set according to specific usage requirements, and the number of rejection cone heads 41 in the corresponding cone head group 40 is set according to the number of strip grooves 11 in the conveyor belt 100, ensuring that each rejection cone head 41 is set corresponding to each strip groove 11.

[0071] See Figure 4 As shown, along the width direction of the rejecting device 4 , two adjacent rejecting cone heads 41 are spaced apart to avoid interference between the two adjacent rejecting cone heads 41 .

[0072] In some embodiments, see Figure 3 As shown, the rejecting device 4 includes multiple groups of cone head groups 40. In the height direction of the rejecting device 4, it can also be understood that in the height direction of the material screening equipment 200, two adjacent groups of cone head groups 40 are arranged at intervals.

[0073] For example, combined Figure 3 and Figure 4As shown, in two adjacent groups, the first reject cone head 41a located at the top is corresponding to the first reject cone head 41a located at the bottom, the second reject cone head 41b located at the top is corresponding to the second reject cone head 41b located at the bottom, the third reject cone head 41c located at the top is corresponding to the third reject cone head 41c located at the bottom, the fourth reject cone head 41d located at the top is corresponding to the fourth reject cone head 41d located at the bottom, the fifth reject cone head 41e located at the top is corresponding to the fifth reject cone head 41e located at the bottom, and the sixth reject cone head 41f located at the top is corresponding to the sixth reject cone head 41f located at the bottom, so that the corresponding upper and lower reject cone heads 41 are used to reject materials falling from the same strip groove 11.

[0074] For example, since the conveyor belt 100 is continuously transporting materials, the materials will also fall continuously. By setting up multiple groups of cone head groups 40, when the removal cone head 41 located above fails to accurately remove the materials doped with impurities, the removal cone head 41 located below can be used to remove the materials doped with impurities, thereby reducing the content of materials doped with impurities in the clean material pile.

[0075] Alternatively, since the material is continuously falling, when there are two continuous materials doped with impurities, when the upper rejecting cone head 41 fails to promptly reject the second material doped with impurities after rejecting the first material doped with impurities, the lower rejecting cone head 41 is used to reject the second material doped with impurities, thereby reducing the content of the material doped with impurities in the clean material pile. It should be noted that, in the process of rejecting the material doped with impurities, the rejecting cone head 41 extends under the action of the cylinder to hit the material doped with impurities, and needs to retract after the rejecting cone head 41 extends, so it takes a certain amount of time for the rejecting cone head 41 to complete a rejection action. Therefore, by setting up multiple groups of cone head groups 40, the content of the material doped with impurities in the clean material pile can be reduced.

[0076] For example, see Figure 3 As shown, in the rejection device 4 of the present application, the rejection device 4 is provided with two groups of cone head groups 40 as an example for explanation, but the present application is not limited to this. The rejection device 4 can also be provided with three groups of cone head groups 40, or four groups of cone head groups 40.

[0077] In some embodiments, see Figure 3 As shown, the material supply module further includes a loading conveyor 23, which is configured to transport the material to the charging hopper 21a.

[0078] For example, see Figure 3As shown, in the height direction of the material screening equipment 200, since the position of the loading hopper 21a is relatively high, during the process of the loading hopper 21a vibrating and shaking the material, the material stored in the loading hopper 21a can be shaken out of the loading hopper 21a, and under the action of gravity, the material can be evenly distributed on the conveyor belt 100.

[0079] By setting up a loading conveyor 23, the feed port 23a of the loading conveyor 23 can be set on the ground, and the discharge port 23b of the loading conveyor 23 can be set above the charging hopper 21a, so that the material piled on the ground can be transported to the charging hopper 21a through the loading conveyor 23, thereby avoiding manual handling and improving work efficiency.

[0080] It should be noted that in some embodiments of the present application, the material screening device 200 is used to screen raw salt as an example. Since raw salt is a crystal formed directly from seawater or other natural salt water without being processed, the surface of the raw salt may be mixed with impurities such as soil or stones, and therefore needs to be screened out for further processing. However, the present application is not limited to this. For example, the material screening device 200 can also be used to screen fruits with surface damage (such as cracked peel, moldy, etc.).

[0081] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A conveyor belt, characterized in that: include: A conveyor belt body, wherein the conveyor belt body is provided with a strip groove in the thickness direction of the conveyor belt body, and the length direction of the strip groove is parallel to the length direction of the conveyor belt body; Each of the strip grooves has groove side surfaces on both sides. In the width direction of the strip groove, the groove side surfaces located on both sides of the strip groove are symmetrically arranged based on the central reference plane of the strip groove, and in the thickness direction of the conveyor belt body, the groove side surfaces are inclined toward the upper end surface of the conveyor belt body.

2. The conveyor belt according to claim 1, characterized in that In the width direction of the strip groove, the distance between the lower edges of the two groove side surfaces is H1, and the distance between the upper edges of the two groove side surfaces is H2, satisfying the relationship: 0mm≤H1≤15mm, 30mm≤H2≤50mm.

3. The conveyor belt according to claim 1 or 2, characterized in that The number of the strip grooves is configured to be multiple, and the multiple strip grooves are arranged in sequence along the width direction of the conveyor belt body; In two adjacent strip-shaped grooves, upper edges of the two adjacent groove side surfaces overlap.

4. A material screening device, characterized in that: include: A material feeding module comprising a vibrating feeder and a belt conveyor, wherein the belt conveyor comprises a conveyor belt according to any one of claims 1 to 3, and the vibrating feeder is configured to evenly distribute the material in the charging hopper of the vibrating feeder onto the conveyor belt; A material detection module includes an identification device group, wherein each identification device group includes two first cameras, and the two first cameras are spaced apart in the conveying direction of the belt conveyor to form a material detection channel; the belt conveyor is configured to drive material dispersed in the conveyor belt to the material detection channel, and the first cameras are configured to identify material containing impurities in the material detection channel to generate a rejection signal; The rejection device includes a rejection cone head. In the height direction of the material screening equipment, the rejection cone head is arranged below the material detection channel, and the axial center line of the rejection cone head coincides with the central reference plane of the strip groove. The rejection device is configured to drive the rejection cone head to move according to the rejection signal so that the rejection cone head rejects materials containing impurities.

5. The material screening equipment according to claim 4, characterized in that: Also includes: A material receiving module, the material receiving module comprising a first conveyor and a second conveyor, wherein the first conveyor and the second conveyor are arranged in sequence in the length direction of the material screening device; Wherein, in the height direction of the material screening equipment, the first conveyor is arranged directly below the material detection channel, and in the length direction of the material screening equipment, the second conveyor is arranged on the side of the first conveyor away from the rejection device.

6. The material screening equipment according to claim 5, characterized in that: The material receiving module also includes a second camera, which is arranged above at least one of the first conveyor and the second conveyor. The second camera is configured to monitor the material accumulation status of at least one of the first conveyor and the second conveyor to generate a start signal, and at least one of the first conveyor and the second conveyor is configured to operate according to the start signal.

7. The material screening device according to any one of claims 4 to 6, characterized in that: The identification device group further includes at least two fill lights, and at least one of the fill lights is provided on one side of each of the first cameras.

8. The material screening equipment according to any one of claims 4 to 6, characterized in that: The rejecting device includes at least one cone head group, and the cone head group includes a plurality of rejecting cone heads arranged in sequence along the width direction of the rejecting device, and the plurality of rejecting cone heads respectively correspond to the plurality of strip grooves one by one.

9. The material screening equipment according to claim 8, characterized in that: The rejecting device includes a plurality of cone head groups, and in the height direction of the rejecting device, two adjacent cone head groups are arranged at intervals.

10. The material screening device according to any one of claims 4 to 6, characterized in that: The material supply module further includes a loading conveyor configured to transport the material to the charging hopper.

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