Solid waste screening device and screening system

Abstract

A solid waste screening device and a screening system, wherein the screening device comprises a frame, a driving mechanism, a screening box and a collecting mechanism, the screening box has a blocking structure and a screening mesh extending obliquely relative to a first horizontal direction, the height of the feeding end of the screening mesh is lower than the height of the discharging end, the driving mechanism is used to drive the screening box to reciprocate along the first horizontal direction, and the blocking structure is used to limit the movement of the material in the screening box towards the feeding end. By adopting the low-in high-out structure with the feeding end lower than the discharging end, the material in the screening box can be gradually thrown towards the discharging end in a parabolic trajectory during the reciprocating movement of the screening box. When applied to the scene of multi-particle size classification screening, by differentiating the aperture of the screening mesh along the extension direction or by serially combining multiple screening boxes or multiple screening devices along the first horizontal direction, not only can the multi-particle size step-by-step classification screening be realized, but also the structural compactness of the device or system can be enhanced and the occupation of vertical space can be significantly reduced.

Description

Technical Field

[0001] This application relates to the field of solid waste treatment technology, specifically to a solid waste screening device and screening system. Background Technology

[0002] With the continuous increase in the amount of solid waste generated, such as household waste, construction waste, and general industrial waste, screening and processing has become an important part of the resource recycling of solid waste; among them, screening equipment is the core equipment for realizing the automatic screening and processing of solid waste.

[0003] Existing screening equipment generally adopts a material flow pattern of high-level feeding and low-level discharge, resulting in problems such as large size and large space occupation. For example, when performing multi-size grading and screening of solid waste, each screening unit needs to be stacked in the vertical direction, which causes the structural complexity and overall height of the screening equipment to increase significantly with the increase of the number of screening stages. This not only makes it difficult to flexibly adjust the number of screening stages according to the actual working conditions, but also limits the material flow and processing efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a solid waste screening device and a screening system using the screening device, so as to at least partially solve the above-mentioned technical problems.

[0005] According to a first aspect, one embodiment provides a solid waste screening device, comprising:

[0006] frame;

[0007] A sieve box has a sieve mesh located at the bottom of the sieve box. The sieve mesh extends at an inclination relative to a first horizontal direction. One end of the sieve mesh in its extension direction is a feed end and the other end is a discharge end. The height of the feed end in the vertical direction is lower than the height of the discharge end.

[0008] A drive mechanism is disposed on the frame; the power end of the drive mechanism is coupled to the screen box, for driving the screen box to reciprocate relative to the frame in the first horizontal direction; and

[0009] A material collection mechanism is located below the screen box in the vertical direction, and the material collection mechanism is used to collect the material that falls after being screened by the screen box;

[0010] The screen box is equipped with a blocking structure, which is used to restrict the movement of material in the screen box toward the feed end.

[0011] In one embodiment, the number of the blocking structures is set to one or more, and the multiple blocking structures are arranged at intervals along the extending direction.

[0012] In one embodiment, the screen includes a plurality of mesh plates connected sequentially along the extending direction, and a blocking structure is formed between two adjacent mesh plates.

[0013] In one embodiment, the mesh plate has a mesh plate portion, wherein the end of the mesh plate portion near the feed end in the extending direction is bent upward to form a first folded edge portion, and the end of the mesh plate portion near the discharge end in the extending direction is bent downward to form a second folded edge portion;

[0014] Wherein, the first folded edge of one of two adjacent mesh panels and the second folded edge of the other are stacked and connected along the extending direction to form a blocking step between the two adjacent mesh panel portions; the blocking structure includes the blocking step.

[0015] In one embodiment, the first folded edge is stacked on the side of the corresponding second folded edge near the feed end; and / or the first folded edge is detachably and fixedly connected to the corresponding second folded edge.

[0016] In one embodiment, the plurality of screen plates have the same aperture; or the plurality of screen plates have different apertures, and the aperture of the screen plate near the discharge end is larger than the aperture of the screen plate near the feed end.

[0017] In one embodiment, the screen box includes two side plates spaced apart from each other in a second horizontal direction, and a plurality of support beams arranged at intervals along the extending direction are provided between the two side plates. The support beams are used to detachably fix the screen between the two side plates; wherein the first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other.

[0018] In one embodiment, the frame is provided with a feeding port structure; the feeding port structure is located above the screen box in the vertical direction and is used to feed materials into the feeding end;

[0019] And / or the material collection mechanism has a first material collection port and a second material collection port that are independent of each other. The first material collection port is used to collect the material falling through the screen, and the second material collection port is used to collect the material falling from the discharge end.

[0020] In one embodiment, the drive mechanism includes:

[0021] A linkage assembly is disposed on opposite sides of the screen box in the second horizontal direction. The linkage assembly includes a rotating arm, a linkage arm, and a swing arm. The middle part of the swing arm is hinged to the frame. The driven end of the swing arm is rotatably connected to the screen box. The linkage arm is hinged between the driving end of the swing arm and the driven end of the rotating arm.

[0022] A drive shaft extends along the second horizontal direction and is rotatably connected to the frame; the active end of the rotating arm is fixedly connected to the drive shaft; and

[0023] A drive motor is mounted on the frame; the power end of the drive motor is coupled to the drive shaft to drive the drive shaft to rotate, so that the connecting rod assembly drives the screen box to reciprocate.

[0024] Wherein, the first horizontal direction, the second horizontal direction, and the vertical direction are perpendicular to each other.

[0025] In one embodiment, the drive mechanism further includes a transmission assembly, which includes a reduction gearbox, a first transmission belt, and a second transmission belt. The power input end of the reduction gearbox is connected to the power end of the drive motor via the first transmission belt, and the power output end of the reduction gearbox is connected to the drive shaft via the second transmission belt.

[0026] And / or the drive mechanism further includes an auxiliary arm that corresponds to and cooperates with each of the connecting rod assemblies. The auxiliary arm and the corresponding connecting rod assemblies are arranged at intervals in the first horizontal direction. One end of the auxiliary arm is hinged to the frame and the other end is hinged to the screen box.

[0027] In one embodiment, the number of sieve boxes is set to multiple, wherein:

[0028] The plurality of screen boxes are arranged sequentially along the first horizontal direction, and each of the plurality of screen boxes corresponds to a driving mechanism; the feed end of one of two adjacent screen boxes is located below the discharge end of the other in the vertical direction;

[0029] Or multiple screen boxes are arranged side by side along the second horizontal direction, each of the multiple screen boxes corresponds to one of the driving mechanisms, or at least two of the multiple screen boxes share the same driving mechanism, and the first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other.

[0030] In one embodiment, the plurality of screen boxes includes a first screen box and a second screen box arranged adjacent to each other in a first horizontal direction, the feed end of the second screen box being located below the discharge end of the first screen box in the vertical direction, and the aperture of the screen mesh of the first screen box being smaller than the aperture of the screen mesh of the second screen box.

[0031] According to a second aspect, one embodiment provides a solid waste screening system including multiple detachable and combinable screening devices, wherein the screening devices employ the screening devices described in the first aspect.

[0032] In one embodiment, the plurality of screening devices includes a first screening device and a second screening device, the first screening device and the second screening device are arranged along the first horizontal direction, the second screening device is used to receive the material discharged from the discharge end corresponding to the first screening device, and the aperture of the screen of the second screening device is larger than the aperture of the screen of the first screening device.

[0033] The solid waste screening equipment according to the above embodiments adopts a low-in, high-out structure where the feed end is lower than the discharge end. During the reciprocating motion of the screen box, the material inside the screen box can be gradually thrown towards the discharge end along an approximately parabolic trajectory, thereby achieving orderly material propulsion and screening. On the one hand, when applied to multi-particle-size grading screening scenarios, by differentiating the aperture of the screen mesh along the extension direction, or by connecting multiple screen boxes or multiple screening devices in series along the first horizontal direction, not only can multi-particle-size progressive grading screening be achieved, but the structural compactness of the equipment or system can also be enhanced, and the vertical space occupation can be significantly reduced. On the other hand, by connecting multiple screen boxes or multiple screening devices in parallel along the second horizontal direction, the screening capacity of solid waste can be effectively increased, while also significantly reducing the vertical space occupation. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of a screening device according to one embodiment.

[0035] Figure 2 This is a schematic diagram of the cross-sectional structure of a screening device according to one embodiment.

[0036] Figure 3 This is a schematic diagram of the structure of the screen box and drive mechanism in a screening device according to one embodiment.

[0037] Figure 4 This is a schematic diagram of the cross-sectional structure of the screen box in a screening device according to one embodiment.

[0038] Figure 5 for Figure 4 A magnified schematic diagram of the local structure of region A in the middle.

[0039] Figure 6 This is an exploded view of the structure of the screen box in a screening device according to one embodiment.

[0040] Figure 7 This is a schematic diagram of the screen plate structure in a screening device according to one embodiment.

[0041] Figure 8 This is a schematic diagram of the structural layout of the screens in a series configuration in a screening device according to one embodiment.

[0042] Figure 9 This is a schematic diagram of the structural layout of screening equipment in parallel operation in a screening system according to one embodiment.

[0043] In the picture:

[0044] 100. Screen box; 100a. Feeding end; 100b. Discharge end; 110. Screen mesh; 111. Mesh plate section; 112. First folded edge section; 113. Second folded edge section; 120. Blocking structure; 130. Side plate; 140. Support beam; 200. Drive mechanism; 210. Drive motor; 220. Drive shaft; 230. Rotating arm; 240. Linkage arm; 250. Swinging arm; 260. Gearbox; 270. First transmission belt; 280. Second transmission belt; 290. Auxiliary arm; 300. Frame; 310. Feeding port structure; 311. Guide wall; 400. Collection mechanism; 410. First collection port; 420. Second collection port. Detailed Implementation

[0045] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0046] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0047] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0048] Please see Figures 1 to 8This application provides a solid waste screening device that can be used to screen solid waste such as domestic waste, construction waste, and general industrial waste. The screening device includes a screen box 100, a drive mechanism 200, a frame 300, a material collection mechanism 400, and other functional components as needed (such as a control device for controlling the opening and closing of the drive mechanism 200).

[0049] To describe the screening device provided in the embodiments of this application more clearly and in detail, the screening device in its natural or normal placement state is defined herein as a vertical direction, a first horizontal direction, and a second horizontal direction that are perpendicular to each other; for example, the first horizontal direction may be Figure 1 The left and right directions of the screening equipment shown, and the second horizontal direction can be... Figure 1 The screening equipment shown can be positioned in the front-to-back direction and vertical direction. Figure 1 The vertical direction of the screening equipment is shown. In this article, the solid waste processed by the screening equipment is collectively referred to as "material".

[0050] Please see Figure 1 and Figure 2 The frame 300 primarily provides structural support and assembly space for the screen box 100, drive mechanism 200, and material collection mechanism 400, enabling them to be assembled into a relatively complete screening device. For example, the frame 300 can adopt a frame structure to facilitate the disassembly and assembly of some or all functional components of the screening device. It is understood that in some scenarios, the frame 300 can be used to transport, move, and position the screening device within the work area.

[0051] Please see Figure 1 Figure 3 and Figure 4 The drive mechanism 200 is disposed on the frame 300, and the power end of the drive mechanism 200 is coupled to the screen box 100. The drive mechanism 200 is mainly used to drive the screen box 100 to reciprocate relative to the frame 300 in the first horizontal direction (e.g., linear reciprocating motion).

[0052] For example, please refer to Figure 3 and Figure 4 The drive mechanism 200 is located above the screen box 100 on the frame 300. The drive mechanism 200 includes a linkage assembly, a drive motor 210 and a drive shaft 220. The drive shaft 220 extends along the second horizontal direction and is rotatably connected to the frame 300. The power end of the drive motor 210 is directly or indirectly coupled to the drive shaft 220. The linkage assembly is located on opposite sides of the screen box 100 in the second horizontal direction. Each linkage assembly includes a rotating arm 230, a linkage arm 240 and a swing arm 250 sequentially connected between the drive shaft 220 and the screen box 100.

[0053] For ease of distinction and description, the two opposite ends of the rotating arm 230 in the power transmission direction are defined as the driving end and the driven end of the rotating arm 230, and the two opposite ends of the swing arm 250 in the power transmission direction are defined as the driving end and the driven end of the swing arm 250. The driving end of the rotating arm 230 is fixedly connected to the drive shaft 220 (e.g., coaxially fixed), the linkage arm 240 is hinged between the driven end of the rotating arm 230 and the driving end of the swing arm 250, the driven end of the swing arm 250 is rotatably connected to the screen box 100, and the middle part of the swing arm 250 located between its driving end and the driven end is hinged to the frame 300.

[0054] During the process of the drive motor 210 driving the drive shaft 220 to rotate, the linkage assembly composed of the rotating arm 230, the linkage arm 240 and the swing arm 250 is used to convert the rotational motion of the drive shaft 220 into the reciprocating motion of the screen box 100 in the first horizontal direction.

[0055] It should be noted that, Figure 4 The bold dashed line with double arrows indicates the approximate direction of movement of the screen box 100.

[0056] In other embodiments, the drive mechanism 200 may also adopt other suitable structures; for example, the drive mechanism 200 may be a power mechanism capable of outputting linear motion, formed by combining power devices such as cylinders and motors with related transmission components. The drive mechanism 200 may be disposed on one side of the screen box 100 in the first horizontal direction, and the reciprocating motion of the screen box 100 in the first horizontal direction is realized by pushing and pulling the screen box 100. All these embodiments are acceptable as long as the drive mechanism 200 is configured to drive the screen box 100 to reciprocate along the first horizontal direction; further details are omitted here.

[0057] Please see Figures 1 to 6 The screen box 100 is located inside the frame 300 and is mainly used to screen materials during reciprocating motion, such as screening and separating materials with different particle sizes. The screen box 100 has a screen 110 for screening materials. The screen 110 is located at the bottom of the screen box 100 in the vertical direction and extends at an angle relative to the first horizontal direction (it can also be understood that the screen 110 extends at an angle along the left and right direction of the screening equipment).

[0058] Please refer to Figure 3 and Figure 4The end of the screen 110 with a lower vertical height serves as the feed end 100a of the screen 110 or screen box 100, and the end of the screen 110 with a higher vertical height serves as the discharge end 100b of the screen 110 or screen box 100. That is, one end of the screen 110 in its extension direction is the feed end 100a and the other end is the discharge end 100b, and the height of the feed end 100a in the vertical direction is lower than the height of the discharge end 100b.

[0059] By extending the screen 110 at an incline and using its lower end as the feed end 100a and its higher end as the discharge end 100b, the screen box 100 can be constructed as an inclined screen structure with low inlet and high outlet (i.e., feed at a low position and discharge at a high position). In the reciprocating motion of the screen box 100, the material inside the screen box 100 is pushed and conveyed toward the discharge end 100b.

[0060] Specifically, based on the inclined screen structure with low inlet and high outlet, during the process of the drive mechanism 200 driving the screen box 100 to reciprocate along the first horizontal direction, the material inside the screen box 100 or on the screen 110 will be gradually thrown towards the discharge end 100b with an approximately parabolic trajectory, thus forming a unidirectional conveying and pushing form of material from low to high; during this process, the material with a particle size smaller than the aperture of the screen 110 will fall from the screen 110 and be discharged from the screen box 100, while the material with a particle size larger than the aperture of the screen 110 will be gradually thrown to the discharge end 100b and finally discharged from the screen box 100, thereby realizing the screening of materials with different particle sizes.

[0061] In some embodiments, please refer to Figures 2 to 6 The screen box 100 may be equipped with a blocking structure 120 that works in conjunction with the screen 110. The number of blocking structures 120 can be one or more, such as two, three, or more. These blocking structures 120 are spaced apart along the extending direction of the screen 110. For example, the blocking structure 120 may include a baffle structure, which may protrude from the surface of the screen 110 (e.g., be integrally formed with the screen 110). The baffle structure may also be connected to the inner wall of the screen box 100 and located above the screen 110. During the reciprocating motion of the screen box 100 in the first horizontal direction, the blocking structure 120 can restrict or block the movement of material within the screen box 100 towards the feed end 100a. This prevents material from accumulating at the feed end 100a and allows the material to be gradually and unidirectionally pushed and conveyed towards the discharge end 100b.

[0062] Specifically, taking a blocking structure 120 located near the feed end 100a as an example, when material is fed to the feed end 100a, it is usually located on the side of the blocking structure 120 facing the feed end 100a. When the screen box 100 moves along the first horizontal direction towards the discharge end 100b, the material is first thrown up and detached from the screen 110. When the screen box 100 moves along the first horizontal direction towards the feed end 100a, the material falls freely onto the screen 110 and is located on the side of the blocking structure 120 facing the discharge end 100b. In this way, through the reciprocating motion of the screen box 100 and the cooperation of multiple blocking structures 120, the material can be gradually pushed and conveyed towards the discharge end 100b.

[0063] In some embodiments, please refer to Figure 1 and Figure 2 The frame 300 is equipped with a feeding port structure 310, which is located vertically above the screen box 100 and is mainly used to feed materials into the feed end 100a. For example, the feeding port structure 310 is located above the feed end 100a, and the feeding port structure 310 may have a guide wall 311 adapted to the inclination angle of the screen 110 (see [reference]). Figure 2 The material to be screened is fed into the feeding port structure 310 by manual labor or material conveying equipment. Based on the material's own gravity and the guiding effect of the guide wall 311, the material can be accurately dropped to the feeding end 100a to improve feeding efficiency.

[0064] Please see Figure 1 and Figure 2 The collecting mechanism 400 is located vertically below the screen box 100 and is mainly used to collect materials falling through the screen box 100. For example, the collecting mechanism 400 has a first collecting port 410 and a second collecting port 420 that are independent of each other and arranged along a first horizontal direction. The first collecting port 410 is used to collect materials falling through the screen 110 (i.e., materials with a particle size smaller than the aperture of the screen 110), and the second collecting port 420 is used to collect materials discharged from the discharge end 100b and falling (i.e., materials with a particle size larger than the aperture of the screen 110).

[0065] In some embodiments, please refer to Figure 1 and Figure 2 Below the first collection port 410 and / or the second collection port 420, a corresponding conveying device (such as a conveyor belt) or a material container can be installed. The conveying device can output the material collected by the corresponding collection port to the screening equipment and then to the next processing stage. The material container can directly receive and store the material collected by the corresponding collection port.

[0066] Based on this, the screening equipment provided in this application adopts a low-inlet, high-outlet inclined conveying structure, which can not only support the significant reduction of space requirements for the work site, but also support the realization of multi-particle-size grading and screening, improve screening accuracy and screening efficiency, and increase material throughput.

[0067] For example, in application, the aperture of the screen 110 can be differentiated along the extension direction of the screen 110. For instance, the aperture of the screen 110 can be gradually increased from the feed end 100a to the discharge end 100b. In this way, as the material is gradually pushed and conveyed unidirectionally towards the discharge end 100b, multi-particle-size progressive grading and screening can be achieved based on the same screen box 100 or the same screening equipment, thereby improving screening accuracy. Compared with the existing multi-particle-size grading and screening schemes where each level of screening unit is stacked vertically, since the material is progressively screened roughly along the horizontal direction, the overall height of the screening equipment will be significantly reduced. This not only reduces the occupation of vertical space and the requirements for the net height of the work site, but also helps to improve the structural compactness of the screening equipment.

[0068] For example, please combine Figure 8 In application, multiple screen boxes 100 connected in series along the first horizontal direction can be set in the same screening equipment, or multiple screening equipment can be connected in series along the first horizontal direction to form a screening system. Based on the difference in aperture of the screen mesh 110 in different screen boxes 100 and the inclined screen structure with low inlet and high outlet, multi-particle size step-by-step grading and screening can also be realized. At the same time, the vertical space occupied by the screening equipment or the screening system composed of multiple screening equipment is greatly reduced, and the structural compactness of the screening equipment or screening system is improved.

[0069] For example, please combine Figure 9 In application, multiple screening devices can be connected in parallel along the second horizontal direction to form a screening system. Based on the low-inlet and high-outlet material conveying mode of the screen box 100, it can not only realize the gradual classification and screening of multiple particle sizes, but also effectively increase the material processing capacity of the screening system and improve the screening efficiency.

[0070] It should be noted that in some embodiments, the screen box 100 may omit the blocking structure 120, and can meet different screening operation requirements based solely on the low-inlet, high-outlet material conveying mode of the screen box 100. For example, when the blocking structure 120 is omitted, multiple screen boxes 100 can be connected in series along the first horizontal direction. By utilizing the differences in screen mesh size of different screen boxes 100 and the inclined screen structure with low inlet and high outlet, multi-particle-size stepwise grading and screening can also be achieved based on the same screening equipment.

[0071] In some embodiments, please refer to Figures 3 to 7The screen 110 includes multiple screen plates, such as two, three or more; the multiple screen plates are connected sequentially along the extension direction of the screen 110, and a blocking structure 120 is formed between adjacent screen plates.

[0072] For example, please refer to Figures 4 to 7 The screen has a screen portion 111 with numerous mesh holes. The end of the screen portion 111 near the feed end 100a in the extending direction is bent upward to form a first folded edge portion 112, and the end of the screen portion 111 near the discharge end 100b in the extending direction is bent downward to form a second folded edge portion 113. The first folded edge portion 112 of one of two adjacent screens and the second folded edge portion 113 of the other are stacked and connected in the extending direction.

[0073] Thus, based on the different bending directions of the first folded edge portion 112 and the second folded edge portion 113 relative to the mesh plate portion 111, the entire screen 110 can be constructed into a stepped structure; and the step between two adjacent mesh plates or two adjacent mesh plate portions 111 can serve as a blocking structure 120, so as to restrict or block the material from moving toward the feed end 100a during the reciprocating motion of the screen box 100 along the first horizontal direction.

[0074] For ease of distinction and description, this step is defined as a blocking step; it can be understood that the blocking structure 120 includes the blocking step; in addition, the first folded edge 112 of the lowest end of the screen plate in the extending direction of the screen 110 can also serve as the blocking structure 120. By integrating the blocking structure 120 into the connection of adjacent screen plates or using a local structure of the screen plate as the blocking structure 120, not only is the manufacturing process simple and the blocking effect reliable, but there is also no need to set up an additional independent blocking structure component, and the structure of the screen box 100 is also simpler and more compact.

[0075] In other embodiments, the screen 110 can also adopt other suitable structures. For example, the first folded edge portion 112 and the second folded edge portion 113 are both bent upward relative to the mesh plate portion 111. In this way, by stacking and connecting the first folded edge portion 112 and the second folded edge portion 113 of two adjacent mesh plates, a corresponding blocking structure 120 can be formed on the upper surface of the screen 110 using the stacked and connected first folded edge portion 112 and the second folded edge portion 113. Alternatively, the screen 110 can also adopt an integrally formed stepped structure, for example, the screen 110 can be bent from the same blank mesh plate.

[0076] In some embodiments, multiple screen plates (specifically screen plate sections 111) may have the same aperture. In this way, as the screen box 100 reciprocates along the first horizontal direction, the material inside the screen box 100 will gradually pass through each screen plate, thereby being gradually screened by multiple screen plates, which helps to improve screening efficiency and accuracy.

[0077] In some embodiments, the multiple screen plates may have different apertures; for example, along the extension direction of the screen 110, the apertures of the multiple screen plates gradually increase; or, for example, the aperture of the screen plate near the discharge end 100b is larger than the aperture of the screen plate near the feed end 100a. In this way, as the material in the screen box 100 is gradually pushed towards the discharge end 100b, multi-particle-size progressive grading and screening can be achieved based on a single screen box 100 (correspondingly, the collecting mechanism 400 can be provided with multiple collecting ports corresponding one-to-one with the multiple screen plates), improving the screening accuracy.

[0078] In some embodiments, please refer to Figure 5 Regarding the connection between two adjacent screens, the first folded edge 112 can be stacked and connected on the side of the corresponding second folded edge 113 near the feed end 100a in the extension direction of the screen 110, and the first folded edge 112 and the corresponding second folded edge 113 can be detachably connected and fixed by screws, buckles, etc.

[0079] On the one hand, by setting the overlapping relationship between the first folded edge 112 and the corresponding second folded edge 113, two adjacent screens can be connected together in the form of staggered overlapping hooks, ensuring the stability of the overall structure of the screen 110 and improving the load-bearing strength of the screen 110 on materials.

[0080] On the other hand, as a common consumable in screening equipment, the screen 110, based on the detachable connection between the first folded edge 112 and the corresponding second folded edge 113, facilitates targeted disassembly, replacement, or maintenance of the screen, reducing the cost of consumable replacement or equipment maintenance. At the same time, the screening specifications of the screen 110 can be flexibly adjusted by replacing the screen according to actual needs. For example, by combining screens with different apertures, materials within a preset particle size range can be screened, or the needs of multi-particle-size step-by-step grading and screening can be met.

[0081] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 6 The screen 110 is detachably installed at the bottom of the screen box 100 so that screens 110 with different apertures can be replaced as needed, or the screen 110 can be disassembled and maintained.

[0082] For example, please refer to Figure 6The screen box 100 includes two side plates 130 spaced apart and opposite each other in the second horizontal direction. A plurality of support beams 140 are provided between the two side plates 130 and arranged at intervals along the extension direction of the screen 110. The support beams 140 are used to detachably fix the screen 110 between the two side plates 130. For example, the first folded edge 112 and the corresponding second folded edge 113 can be detachably fixed to the support beams 140 at the corresponding positions by screws, buckles, etc.

[0083] Thus, the support beam 140 can both detachably fix the screen 110 to the bottom of the screen box 100 and provide structural support for the screen 110 to avoid unnecessary deformation of the screen 110 that would affect the screening effect of the material. The power end of the drive mechanism 200 can be connected to the side plate 130; for example, the driven end of the swing arm 250 can be hinged to the corresponding side plate 130.

[0084] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The drive mechanism 200 also includes a transmission assembly disposed between the drive motor 210 and the drive shaft 220. The transmission assembly may include a reduction gearbox 260, a first transmission belt 270 and a second transmission belt 280. The first transmission belt 270 and the second transmission belt 280 may be belts, chains, etc. The first transmission belt 270 is connected between the power input end of the reduction gearbox 260 and the power end of the drive motor 210, and the second transmission belt 280 is connected between the power output end of the reduction gearbox 260 and the drive shaft 220.

[0085] Based on the transmission structure combining the gearbox 260 and the double transmission belt, the output speed of the drive motor 210 can be effectively adjusted, the stability of power transmission can be improved, and the screen box 100 can reciprocate at a more suitable frequency.

[0086] In some embodiments, please refer to Figure 3 and Figure 4 The drive mechanism 200 also includes an auxiliary arm 290, which can be configured to correspond one-to-one with the linkage assembly. For example, the auxiliary arm 290 and the linkage arm 250 in the corresponding linkage assembly are arranged at intervals in the first horizontal direction. One end of the auxiliary arm 290 is hinged to the frame 300 and the other end is hinged to the screen box 100 (e.g., side plate 130). In this way, by means of the two sets of auxiliary arms 290 and linkage assemblies located on opposite sides of the screen box 100 in the second horizontal direction, the screen box 100 can be set inside the frame 100 in an approximately suspended form, and the screen box 100 can be ensured to perform stable linear reciprocating motion in the first horizontal direction.

[0087] As mentioned above, in some embodiments, the number of sieve boxes 100 can be set to multiple, such as two, three, or more. By connecting multiple sieve boxes 100 in series, multi-size progressive grading and sieving can be achieved based on the same sieving equipment, thereby improving sieving accuracy. For details, please refer to... Figure 8 Multiple screen boxes 100 are arranged along a first horizontal direction, forming a horizontal series combination for screening. For ease of distinction and description, any two adjacent screen boxes 100 in the first horizontal direction are defined as the first screen box and the second screen box, respectively. That is, the first screen box and the second screen box are arranged adjacent to each other along the first horizontal direction. The feed end 100a of the second screen box is located below the discharge end 100b of the first screen box in the vertical direction, so that the material discharged from the discharge end 100b of the first screen box can fall freely to the feed end 100a of the second screen box.

[0088] In practice, the aperture of the screen 110 of the first screen box can be set to be larger than that of the screen 110 of the second screen box. Based on the series combination of multiple screen boxes 100, the material can be gradually screened to achieve multi-particle-size gradual grading and screening, thereby improving the screening accuracy. At the same time, the structural compactness of the screening equipment itself can be enhanced, and the vertical space occupied by the screening equipment can be greatly reduced.

[0089] Correspondingly, the first screen box and the second screen box can each correspond to a drive mechanism 200, so that the first screen box and the second screen box can independently reciprocate along the first horizontal direction. This not only helps to selectively start the corresponding number of screen boxes 100 according to the material processing volume or screening accuracy, but also allows for independent adjustment of the motion parameters of different screen boxes 100 according to the characteristics of the material, thereby enhancing the adaptability of the screening equipment.

[0090] Of course, the aperture of the screen 110 of the first screen box can also be set to be the same as that of the screen 110 of the second screen box, so as to improve the screening effect by repeatedly screening the material through multiple screen boxes 100.

[0091] As mentioned earlier, in some embodiments, multiple screen boxes 100 can also be connected in parallel to effectively increase the processing capacity and screening efficiency of the screening equipment. Specifically, please refer to... Figure 9 Multiple screen boxes 100 are arranged along the second horizontal direction to form a horizontal parallel combination screening structure. Each screen box 100 can correspond to a drive mechanism 200, so that each screen box 100 can reciprocate independently. This not only makes it easy to selectively start the corresponding number of screen boxes 100 according to the material processing volume, but also allows for independent control of the motion parameters of different screen boxes 100 according to the characteristics of the material, thereby enhancing the adaptability of the screening equipment.

[0092] Of course, some or all of the multiple screen boxes 100 can also share a single drive mechanism 200. For example, two or three adjacent screen boxes 100 can share the same drive mechanism 200. For instance, each screen box 100 can be connected to the drive shaft 230 on opposite sides in the second horizontal direction via a linkage assembly, thereby enabling the sharing of the drive shaft 220 and the drive motor 210 (or together with the transmission assembly). This not only increases the material processing capacity through the synchronous reciprocating motion of multiple screen boxes 100, but also helps to reduce the number of components in the screening equipment and improve the structural compactness of the screening equipment.

[0093] Please see Figure 9 and combined Figure 1 , Figure 2 and Figure 8 This application also provides a solid waste screening system, which includes multiple detachable and combinable screening devices, wherein the screening devices adopt the screening devices of any of the foregoing embodiments.

[0094] For example, please combine Figure 8 The screening system comprises multiple screening devices detachably connected in series along a first horizontal direction. These devices include a first screening device and a second screening device arranged adjacent to each other in the first horizontal direction. The second screening device receives material discharged from the corresponding discharge end 100b of the first screening device, and the aperture of the screen 110 of the second screening device is larger than that of the screen 110 of the first screening device. Specifically, the feed end 100a of the second screening device can be vertically positioned below the discharge end 100b of the first screening device, allowing the second screening device to receive material discharged from the first screening device. Alternatively, a material conveying device can be installed between the feed end 100a of the second screening device and the discharge end 100b of the first screening device.

[0095] Thus, by connecting multiple screening devices in series along the first horizontal direction, the screening system can be constructed into a modular combination structure. This not only allows for flexible adjustment of the number and specifications of the screening devices according to actual working conditions, improving the adaptability of the screening system, but also effectively reduces the occupation of vertical space and lowers the requirements for the clearance height of the work site. At the same time, based on the difference in the aperture of the screens 110 of the multiple screening devices and the material conveying form of the screen box 100 (low inlet, high outlet), the screening system can be applied to multi-particle-size step-by-step grading screening scenarios, ensuring screening accuracy and screening efficiency.

[0096] Of course, in some embodiments, please refer to Figure 9The screening system can also be composed of multiple screening devices that can be detached and connected in parallel along the second horizontal direction, so as to significantly increase the processing capacity of the screening system while reducing the occupation of vertical space; or the screening system can be formed by multiple screening devices arranged in an array that can be detached and combined (for example, four screening devices in a 2*2 rectangular array), so as to both increase the processing capacity of the screening system and meet the needs of multi-particle-size step-by-step grading and screening.

[0097] It is understandable that since the screening equipment has the above-mentioned technical effects, the screening system with the screening equipment should also have the same technical effects, so it will not be elaborated here.

[0098] It should be noted that the "aperture" described in this article refers to the mesh size of the sieve 110, such as the diameter of the mesh opening.

[0099] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A solid waste screening apparatus, characterized by, include: frame; A sieve box has a sieve mesh located at the bottom of the sieve box. The sieve mesh extends at an inclination relative to a first horizontal direction. One end of the sieve mesh in its extension direction is a feed end and the other end is a discharge end. The height of the feed end in the vertical direction is lower than the height of the discharge end. A drive mechanism is disposed on the frame; the power end of the drive mechanism is coupled to the screen box, and is used to drive the screen box to reciprocate relative to the frame in the first horizontal direction; as well as A material collection mechanism is located below the screen box in the vertical direction, and the material collection mechanism is used to collect the material that falls after being screened by the screen box; The screen box is equipped with a blocking structure, which is used to restrict the movement of material in the screen box toward the feed end.

2. The screening apparatus of claim 1, wherein The number of the blocking structures is set to one or more, and the multiple blocking structures are arranged at intervals along the extension direction.

3. The screening apparatus of claim 2, wherein, The screen includes multiple mesh plates, which are connected sequentially along the extending direction, and a blocking structure is formed between two adjacent mesh plates.

4. The screening apparatus of claim 3, wherein The mesh plate has a mesh plate portion, and the end of the mesh plate portion near the feed end in the extending direction is bent upward to form a first folded edge portion, and the end of the mesh plate portion near the discharge end in the extending direction is bent downward to form a second folded edge portion. Wherein, the first folded edge of one of two adjacent mesh panels and the second folded edge of the other are stacked and connected along the extending direction to form a blocking step between the two adjacent mesh panel portions; the blocking structure includes the blocking step.

5. The screening apparatus of claim 4, wherein, The first folded edge is stacked on the side of the corresponding second folded edge near the feed end; and / or the first folded edge and the corresponding second folded edge are detachably and fixedly connected.

6. The screening apparatus of claim 3, wherein Multiple mesh plates have the same aperture; or multiple mesh plates have different apertures, and the aperture of the mesh plate closer to the discharge end is larger than the aperture of the mesh plate closer to the feed end.

7. The screening apparatus of claim 1, wherein The screen box includes two side plates spaced apart from each other in a second horizontal direction, and a plurality of support beams are provided between the two side plates and arranged at intervals along the extending direction. The support beams are used to detachably fix the screen between the two side plates; wherein the first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other.

8. The screening apparatus of claim 1, wherein, The frame is provided with a feeding port structure; the feeding port structure is located above the screen box in the vertical direction and is used to feed materials into the feeding end; And / or the material collection mechanism has a first material collection port and a second material collection port that are independent of each other. The first material collection port is used to collect the material falling through the screen, and the second material collection port is used to collect the material falling from the discharge end.

9. The screening device as described in any one of claims 1 to 8, characterized in that, The drive mechanism includes: A linkage assembly is disposed on opposite sides of the screen box in the second horizontal direction. The linkage assembly includes a rotating arm, a linkage arm, and a swing arm. The middle part of the swing arm is hinged to the frame. The driven end of the swing arm is rotatably connected to the screen box. The linkage arm is hinged between the driving end of the swing arm and the driven end of the rotating arm. A drive shaft extends along the second horizontal direction and is rotatably connected to the frame; the active end of the rotating arm is fixedly connected to the drive shaft; and A drive motor is mounted on the frame; the power end of the drive motor is coupled to the drive shaft to drive the drive shaft to rotate, so that the connecting rod assembly drives the screen box to reciprocate. Wherein, the first horizontal direction, the second horizontal direction, and the vertical direction are perpendicular to each other.

10. The screening apparatus of claim 9, wherein, The drive mechanism further includes a transmission assembly, which includes a reduction gearbox, a first transmission belt, and a second transmission belt. The power input end of the reduction gearbox is connected to the power end of the drive motor through the first transmission belt, and the power output end of the reduction gearbox is connected to the drive shaft through the second transmission belt. And / or the drive mechanism further includes an auxiliary arm that corresponds to and cooperates with each of the connecting rod assemblies. The auxiliary arm and the corresponding connecting rod assemblies are arranged at intervals in the first horizontal direction. One end of the auxiliary arm is hinged to the frame and the other end is hinged to the screen box.

11. The screening apparatus of any one of claims 1 to 8, wherein, The number of sieve boxes is set to multiple, wherein: The plurality of screen boxes are arranged sequentially along the first horizontal direction, and each of the plurality of screen boxes corresponds to a driving mechanism; the feed end of one of two adjacent screen boxes is located below the discharge end of the other in the vertical direction; Or multiple screen boxes are arranged side by side along the second horizontal direction, each of the multiple screen boxes corresponds to one of the driving mechanisms, or at least two of the multiple screen boxes share the same driving mechanism, and the first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other.

12. The screening apparatus of claim 11, wherein, The plurality of screen boxes includes a first screen box and a second screen box arranged adjacent to each other in a first horizontal direction. The feed end of the second screen box is located below the discharge end of the first screen box in the vertical direction. The aperture of the screen mesh of the first screen box is smaller than the aperture of the screen mesh of the second screen box.

13. A solid waste sorting system, characterized in that, It includes multiple detachable and combinable screening devices, wherein the screening devices are the screening devices according to any one of claims 1 to 12.

14. The screening system of claim 13, wherein, The plurality of screening devices include a first screening device and a second screening device, the first screening device and the second screening device are arranged along the first horizontal direction, the second screening device is used to receive the material discharged from the discharge end corresponding to the first screening device, and the aperture of the screen of the second screening device is larger than the aperture of the screen of the first screening device.

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