Screening structure and its screening machine, sorting system for recycling fused cast refractory

Abstract

The application provides a screening structure, a screening machine and a sorting system for recycling fused cast refractory material, and relates to the technical field of refractory material screening. The screening structure comprises a screening assembly, an auxiliary discharging mechanism and a driving mechanism. The screening assembly is provided with a plurality of discharging grooves. Each discharging groove extends along a first direction and is arranged at intervals along a second direction. The auxiliary discharging mechanism comprises a supporting rod and an auxiliary discharging assembly. The supporting rod is located below the discharging grooves and is rotationally arranged on the screening assembly. The auxiliary discharging assembly is arranged on the supporting rod. The auxiliary discharging assembly is provided with an auxiliary discharging part corresponding to the discharging grooves. The driving mechanism is arranged on the screening assembly and is in transmission connection with the supporting rod. The driving mechanism drives the supporting rod to rotate, so that the auxiliary discharging part is deflected upward into the discharging grooves, and sand blocks stuck in the discharging grooves are pushed out upward. According to the screening structure provided by the application, sand balls or sand particles can fall easily, so that the screening efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of refractory material screening technology, and in particular to a screening structure and screening machine thereof, and a sorting system for recycling cast refractory materials. Background Technology

[0002] Currently, fused cast refractories are widely used in various fields such as steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, power, and military industry. They are essential basic materials for ensuring the production, operation, and technological development of these industries. In particular, as a key basic material in the glass industry, they are directly related to the safety and quality of glass production. Casting and insulation are two key processes in fused cast refractories, which involve concentrated labor, significant safety and environmental protection pressures, and a high proportion of production costs.

[0003] After casting and demolding, fused cast refractory materials typically require recycling for reuse to save costs and meet energy conservation and environmental protection requirements. Related technologies involve using vibrating screens to separate sand blocks, sand balls, or sand particles.

[0004] However, due to the varying shapes and sizes of the sand blocks, they are prone to jamming when passing through the feed chute of existing screening machines, affecting the descent of sand balls or particles and thus reducing the efficiency and thoroughness of the screening. Furthermore, the existing screening process also presents problems such as fugitive dust emissions and safety risks for operators working on high platforms, which urgently need to be addressed. Summary of the Invention

[0005] Based on this, this application provides a screening structure and screening machine thereof, and a sorting system for recycling cast refractory materials, so as to at least solve the problem that existing screening machines used for sorting cast refractory materials are prone to jamming and thus have low efficiency.

[0006] In a first aspect, this application provides a screening machine, comprising:

[0007] A screening assembly having multiple discharge troughs, each discharge trough extending along a first direction and spaced apart along a second direction, the first direction intersecting the second direction, the discharge troughs being used to separate at least a portion of the sand blocks;

[0008] At least one auxiliary discharge mechanism, the auxiliary discharge mechanism includes a support rod and at least one auxiliary discharge component, the support rod is arranged below the discharge chute along a second direction and is rotatably mounted on the screening component; the auxiliary discharge component is mounted on the support rod and has at least one auxiliary discharge section, the auxiliary discharge section corresponding to the adjacent discharge chute;

[0009] The drive mechanism is mounted on the screening assembly and is connected to the support rod via a transmission. The drive mechanism is configured to drive the support rod to rotate, causing the auxiliary discharge section to deflect upward into the discharge chute, thereby pushing the sand blocks stuck in the discharge chute upward.

[0010] Furthermore, the auxiliary discharge mechanism also includes an elastic element, which is connected to the support rod and the screening assembly respectively;

[0011] The drive mechanism is also configured to drive the support rod to rotate a preset angle and then separate from the support rod; the elastic element is configured to drive the support rod to swing toward the starting position.

[0012] Furthermore, at least one end of the support rod is connected to a swing arm, and the number of elastic elements is two;

[0013] Along the first direction, two elastic elements are arranged on both sides of the swing arm and are respectively connected to the swing arm and the screening assembly.

[0014] Furthermore, the drive mechanism includes a transmission component and a drive assembly, the transmission component being movable along a first direction on the screening assembly;

[0015] The transmission component has at least one protrusion on the side facing the swing arm, and the swing arm has a contact portion on the side facing the transmission component.

[0016] The drive assembly is mounted on the screening assembly and is connected to the transmission component. The drive assembly is configured to drive the transmission component to move, so that the protrusion contacts the adjacent contact part, and pushes the swing arm to rotate a preset angle before separating from the contact part.

[0017] Furthermore, there are two auxiliary discharge sections, located on opposite sides of the auxiliary discharge assembly along the first direction;

[0018] The auxiliary discharge assembly also has a counterweight, which is located between the two auxiliary discharge sections.

[0019] Furthermore, the auxiliary discharge assembly includes multiple auxiliary discharge components, which are arranged at intervals along the second direction, and each auxiliary discharge component corresponds to each discharge chute.

[0020] Each auxiliary material discharge component is connected to the support rod, and the auxiliary material discharge section is located on one side of the auxiliary material discharge component along the first direction;

[0021] And / or, multiple auxiliary material discharge mechanisms are arranged at intervals along the first direction.

[0022] Furthermore, the auxiliary discharge assembly also includes multiple connectors, with the support rod contacting the bottom of the screening assembly at positions corresponding to both sides of the discharge chute;

[0023] Adjacent auxiliary material discharge components are connected by connectors located on the side away from the support rod.

[0024] Furthermore, the screening assembly includes a support frame and multiple support bars, with each support bar spaced apart on the support frame along the second direction to form a material discharge chute, and a drive mechanism is mounted on the support frame.

[0025] Secondly, this application also provides a screening machine, including a screening machine body, on which the screening structure provided in the first aspect is provided.

[0026] Thirdly, this application also provides a sorting system for recycling cast refractory materials, including the screening machine provided in the second aspect, as well as a main silo, a conveyor, multiple sub-silos, a receiving device, and an elevator. The main silo is used to convey mixed sand to the screening machine via the conveyor.

[0027] Screening machines are used to separate mixed sand materials into sand blocks, sand balls, and sand grains, which are then temporarily stored in their respective distribution bins.

[0028] The receiving device is used to receive sand blocks, sand balls or sand grains from each material distribution bin and transfer them to the preset work station via a lift.

[0029] The screening structure and screening machine provided in this application, as well as the sorting system for recycling molten refractory materials, include a screening component, at least one auxiliary discharge mechanism, and a drive mechanism. Multiple discharge troughs are provided on the screening component, each extending along a first direction and spaced apart along a second direction, the first and second directions intersecting. The discharge troughs are used to separate at least a portion of the sand blocks. The auxiliary discharge mechanism includes a support rod and at least one auxiliary discharge component. The support rod is arranged below the discharge trough along the second direction and rotatably mounted on the screening component. The auxiliary discharge component is then mounted on the support rod, having at least one auxiliary discharge section corresponding to an adjacent discharge trough. The drive mechanism is mounted on the screening component and connected to the support rod via a transmission mechanism. The drive mechanism drives the support rod to rotate, causing the auxiliary discharge section to deflect upwards into the discharge trough, thereby pushing the sand blocks stuck in the discharge trough upwards. Therefore, the screening structure provided in this application facilitates the falling of sand balls or sand particles, thereby improving the screening efficiency of recycled cast refractory materials, making the screening more thorough, and enhancing the economic benefits of recycling. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1A top view of the screening structure provided in an embodiment of this application;

[0032] Figure 2 for Figure 1 A sectional view along section AA;

[0033] Figure 3 for Figure 2 A schematic diagram of another state;

[0034] Figure 4 for Figure 2 Partial sectional view along section BB in the middle;

[0035] Figure 5 A schematic diagram of a screening machine provided in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of a sorting system for recycling cast refractory materials provided in an embodiment of this application.

[0037] Figure label:

[0038] 10: Main material bin; 20: Conveyor; 30: Distribution bin; 40: Receiving device; 50: Elevator;

[0039] 100: Screening assembly; 101: Feed chute; 110: Support frame; 120: Support bar;

[0040] 200: Auxiliary material discharge mechanism; 210: Support rod; 211: Swing arm; 212: Contact part; 220: Auxiliary material discharge assembly; 2201: Auxiliary material discharge part; 2202: Counterweight part; 221: Auxiliary material discharge component; 222: Connecting component; 230: Elastic component;

[0041] 300: Drive mechanism; 310: Transmission component; 311: Protrusion; 320: Drive assembly. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0043] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] As mentioned in the background section, existing screening machines for separating cast refractory materials typically have two layers of support bars from top to bottom. The upper support bar has a long, narrow feed chute where sand balls or grains can fall, thus separating most of the sand blocks. The lower support bar has round or square feed holes for separating sand balls or grains of different sizes. Because the shapes and sizes of the sand blocks vary, some blocks tend to get stuck in the feed chute of existing screening machines, preventing the sand balls or grains from falling and reducing the screening efficiency, resulting in incomplete separation. Furthermore, cast refractory materials require binders when being made into casting molds, so some sand balls and grains inevitably stick together, making efficient separation difficult even with existing vibrating screens. This also affects the efficiency and thoroughness of the screening.

[0045] The technical solutions of this application will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0046] Firstly, referring to Figures 1-5 As shown in the figure, this application provides a screening structure, including:

[0047] The screening assembly 100 has a plurality of discharge troughs 101, each discharge trough 101 extending along a first direction and arranged at intervals along a second direction. The first direction intersects or is perpendicular to the second direction. The discharge troughs 101 are used to separate at least a portion of the sand blocks.

[0048] At least one auxiliary discharge mechanism 200 is provided. The auxiliary discharge mechanism 200 includes a support rod 210 and at least one auxiliary discharge assembly 220. The support rod 210 is arranged along a second direction below the discharge chute 101 and is rotatably mounted on the screening assembly 100. The auxiliary discharge assembly 220 is mounted on the support rod 210 and has at least one auxiliary discharge section 2201, which corresponds to the adjacent discharge chute 101.

[0049] A drive mechanism 300 is mounted on the screening assembly 100 and is connected to the support rod 210 in a transmission manner. The drive mechanism 300 is configured to drive the support rod 210 to rotate, causing the auxiliary discharge section 2201 to deflect upward into the discharge chute 101, so as to push the sand blocks stuck in the discharge chute 101 upward.

[0050] The screening component 100 in this embodiment is mainly used to separate larger sand blocks. It can be composed of a shell, a screen plate, and a vibrator. The material discharge chute 101 on the screening component 100 allows sand balls or sand grains to fall, while at least preventing most sand blocks from falling. The material discharge chute 101 extends along a first direction to form a narrow chute. The first direction is arranged along a first transverse direction. For example, if the first direction is along... Figure 1 As shown in the X-axis direction, each material discharge chute 101 is arranged at intervals along the second direction, which is arranged along the second transverse direction. The second direction is as follows: Figure 1 As shown in the Y-axis direction, the second direction is perpendicular to the first direction.

[0051] The auxiliary discharge mechanism 200 in this embodiment includes a support rod 210 and an auxiliary discharge assembly 220. The support rod 210 supports and drives the auxiliary discharge assembly 220 to deflect. It can be a long rod extending along the second direction. Both ends of the support rod 210 can be connected to the screening assembly 100 by rotating components such as bearings. The rotation axis is arranged along the second direction. The support rod 210 is located below the discharge chute 101. The auxiliary discharge assembly 220 can be a block or plate structure, which is fixedly connected to the support rod 210. The auxiliary discharge assembly 220 has an auxiliary discharge part 2201, such as a protruding edge or side edge. The width of the auxiliary discharge part 2201 is smaller than the width of the discharge chute 101 along the second direction, that is, the auxiliary discharge part 2201 can be inserted into or extend into the discharge chute 101.

[0052] In this embodiment, the drive mechanism 300 is used to drive the support rod 210 to rotate intermittently. It can be a motor or a rocker mechanism, etc. The drive mechanism 300 is installed on the outer side of the screening assembly 100 and is connected to the support rod 210 in a transmission manner.

[0053] Specifically, such as Figures 1-3As shown, the mixed sand material containing sand blocks, sand balls, or sand particles is conveyed to the screening component 100. The screening component 100 starts vibrating screening. The sand balls or sand particles fall through the discharge chute 101 for further screening, separating at least most of the sand blocks. When the width of the sand block is similar to the width of the discharge chute 101, the sand block gets stuck in the discharge chute 101. At this time, the drive mechanism 300 drives the support rod 210 to rotate, causing the auxiliary discharge component 220 to deflect to one side, so that the auxiliary discharge part 2201 deflects upward into the discharge chute 101, thereby pushing the sand block stuck in the discharge chute 101 upward and greatly reducing the situation of jamming.

[0054] It should be noted that the screening component 100 can be tilted during use, with the higher side used for feeding and the lower side tilted for discharging.

[0055] It is understandable that, compared with the existing vibrating screen structure, the application of the screening structure in this embodiment facilitates the falling of sand balls or sand particles and avoids sand blocks getting stuck in the discharge chute 101, thereby improving the screening efficiency of recycled cast refractory materials and making the screening more thorough.

[0056] It is worth noting that pushing the sand block upwards by the auxiliary discharge section 2201 requires less force than squeezing the sand block downwards, making it easier to successfully eject the sand block. Moreover, when one side of the auxiliary discharge component 220 pushes the sand block upwards, the other side does not affect the falling of sand balls or sand particles from the discharge chute 101.

[0057] In some embodiments, the auxiliary discharge mechanism 200 further includes an elastic element 230, which is connected to the support rod 210 and the screening assembly 100 respectively.

[0058] The drive mechanism 300 is also configured to drive the support rod 210 to rotate by a preset angle and then separate from the support rod 210. The elastic element 230 is configured to drive the support rod 210 to swing toward the starting position.

[0059] Specifically, the elastic element 230 can be a tension spring or a torsion spring. The elastic element 230 is connected to the support rod 210 and the screening assembly 100. The drive mechanism 300 drives the support rod 210 to rotate a preset angle and then separates from the support rod 210. On one hand, the elastic element 230 can reset the support rod 210 and the auxiliary discharge assembly 220 to avoid affecting the material discharge at the discharge chute 101; on the other hand, under the action of elasticity, the support rod 210 and the auxiliary discharge assembly 220 can be made to swing back and forth rapidly, such as... Figure 2 The material swings left and right, and under the screening vibration of the screening component 100, the auxiliary discharge part 2201 can impact the falling sand balls and / or sand particles, breaking up the sand balls and / or sand particles that are stuck together, thereby facilitating the next step of screening the sand balls and sand particles and making the screening more thorough.

[0060] It should be noted that the preset angle is the deflection angle of the auxiliary discharge component 220 when it swings to the side from the vertical position to the maximum position. It can be 25°~35°, but it must be determined according to actual needs, provided that the auxiliary discharge part 2201 can be inserted into the discharge trough 101.

[0061] Furthermore, in this embodiment, at least one end of the support rod 210 is connected to a swing arm 211, and the number of elastic elements 230 is two.

[0062] Along the first direction, two elastic elements 230 are respectively arranged on both sides of the swing arm 211 and respectively connected to the swing arm 211 and the screening assembly 100.

[0063] Specifically, such as Figure 1 , Figure 5 As shown, one end of the swing arm 211 is fixedly connected to the support rod 210, and the other end is arranged downwards. The elastic element 230 is a tension spring. Two tension springs are arranged opposite each other on both sides of the swing arm 211 along the first direction. One end of the tension spring is connected to the limiting post of the swing arm 211, and the other end of the tension spring is connected to the limiting post on the outer wall of the screening assembly 100. Under the action of the two tension springs, the swing arm 211 is in the middle equilibrium position.

[0064] It should be noted that the arrangement of the two tension springs tightening both sides of the swing arm 211 can make the swing arm 211 drive the support rod 210 and the auxiliary discharge assembly 220 to swing back and forth at a higher frequency, thereby increasing the frequency of impact of the auxiliary discharge part 2201 on the falling sand balls and / or sand particles that are stuck together, and further making the screening more thorough.

[0065] Furthermore, in this embodiment, the drive mechanism 300 includes a transmission member 310 and a drive assembly 320, with the transmission member 310 being movably disposed on the screening assembly 100 along a first direction.

[0066] The transmission member 310 has at least one protrusion 311 on the side facing the swing arm 211, and the swing arm 211 has a contact portion 212 on the side facing the transmission member 310.

[0067] The drive assembly 320 is disposed on the screening assembly 100 and is connected to the transmission member 310. The drive assembly 320 is configured to drive the transmission member 310 to move, so that the protrusion 311 contacts the adjacent contact portion 212, and pushes the swing arm 211 to rotate a preset angle and then separate from the contact portion 212.

[0068] Specifically, such as Figure 1 , Figure 5As shown, the transmission component 310 has a long, strip-shaped plate or rod-shaped structure. The extension direction of the transmission component 310 is arranged along the first direction. Both sides of the transmission component 310 can be connected to the side wall of the screening assembly 100 through sliding sleeves, that is, the transmission component 310 can reciprocate relative to the screening assembly 100 along the first direction. Moreover, multiple support rollers can be arranged at intervals along the first direction on the side wall of the screening assembly 100, and each support roller supports the bottom of the transmission component 310.

[0069] The transmission component 310 has a protrusion 311 on its upper surface and a contact portion 212 at the lower end of the swing arm 211. The protrusion 311 is used to push the contact portion 212. The contact portion 212 can be equipped with a roller to reduce rigid wear between the two.

[0070] Furthermore, the drive assembly 320 may include a reducer, a turntable, and a connecting rod. The reducer is fixedly mounted on the side wall of the screening assembly 100, the turntable is mounted on the output end of the reducer, one end of the connecting rod is rotatably connected to the transmission component 310, and the other end of the connecting rod is rotatably connected to an off-center position on the turntable.

[0071] In this way, the speed reducer rotates and drives the turntable to rotate. Under the action of the connecting rod, the drive transmission component 310 moves back and forth along the first direction, so that the protrusion 311 contacts the adjacent contact part 212, and pushes the swing arm 211 to rotate at a preset angle and then separate from the contact part 212. The swing arm 211 swings back to its original position under the action of the elastic component 230. This structure is simple and easy to implement, and can drive multiple auxiliary material discharge mechanisms 200 to operate at the same time.

[0072] In some embodiments, there are two auxiliary discharge sections 2201, which are located on both sides of the auxiliary discharge assembly 220 along the first direction.

[0073] The auxiliary discharge assembly 220 also has a counterweight 2202, which is located between the two auxiliary discharge assemblies 2201.

[0074] Specifically, such as Figure 2 As shown, two auxiliary discharge sections 2201 are arranged opposite to each other on both sides of the auxiliary discharge assembly 220 along the first direction, that is, the protruding edges on both sides of the auxiliary discharge assembly 220 along the first direction are the auxiliary discharge sections 2201. Moreover, there is a counterweight section 2202 between the two auxiliary discharge sections 2201, which helps the auxiliary discharge assembly 220 return to the starting position.

[0075] In some embodiments, the auxiliary discharge assembly 220 includes a plurality of auxiliary discharge components 221, each of which is arranged at intervals along a second direction, and each of the auxiliary discharge sections 2201 corresponds one-to-one with each of the discharge troughs 101.

[0076] Each auxiliary material discharge component 221 is connected to the support rod 210, and the auxiliary material discharge section 2201 is located on one side of the auxiliary material discharge component 221 along the first direction.

[0077] And / or, multiple auxiliary material discharge mechanisms 200 are arranged at intervals along the first direction.

[0078] Specifically, such as Figure 2 , Figure 4 As shown, the auxiliary discharge components 221 have a block or plate-like structure. Multiple auxiliary discharge components 221 are arranged along the second direction, corresponding to the number of discharge troughs 101. Mounting holes can be provided on the auxiliary discharge components 221, and support rods 210 are sequentially inserted into the mounting holes of each auxiliary discharge component 221 and fixed by locking bolts. This allows the stuck sand blocks in each discharge trough 101 to be pushed out, resulting in a larger coverage area.

[0079] Furthermore, multiple auxiliary discharge mechanisms 200 can be arranged at intervals along the first direction to further expand the coverage area. The specific number, size, etc., can be determined according to the actual material discharge chute 101, and are not specifically limited in this embodiment. It should be noted that, along the first direction, the spacing between the auxiliary discharge components 221 in adjacent auxiliary discharge mechanisms 200 should be as small as possible, but they should not collide when deflected.

[0080] Furthermore, in this embodiment, the auxiliary discharge assembly 220 also includes a plurality of connectors 222, and the support rod 210 contacts the bottom of the screening assembly 100 at positions corresponding to both sides of the discharge chute 101.

[0081] Adjacent auxiliary material discharge components 221 are connected by connectors 222, which are located on the side away from the support rod 210.

[0082] Specifically, such as Figure 3 , Figure 4 As shown, bearings can be installed on the support rod 210 at positions corresponding to the sides of the material discharge chute 101 at the bottom of the screening assembly 100, with the bearings contacting the bottom of the screening assembly 100. In this way, by supporting the bottom of the screening assembly 100 with the support rod 210, the strength of the sides of the material discharge chute 101 can be increased, preventing it from sinking downwards.

[0083] Furthermore, the connector 222 can connect plates or blocks, and adjacent auxiliary discharge components 221 can be connected by the connector 222, such as by welding or screwing, to further increase the overall strength of the auxiliary discharge component 220 and the support strength for the bottom of the screening component 100.

[0084] In some embodiments, the screening assembly 100 includes a support frame 110 and a plurality of support bars 120. Along a second direction, each support bar 120 is spaced apart on the support frame 110 to form a discharge chute 101. A drive mechanism 300 is disposed on the support frame 110.

[0085] For example, such as Figure 1 As shown, the support frame 110 can be a cuboid frame structure, and the support bars 120 can be long round steel or square steel. Multiple support bars 120 are spaced apart on the support frame 110 along the second direction. The two ends of the support bars 120 can be fixed to the support frame 110 by welding or plugging, so that a material drop groove 101 is formed between adjacent support bars 120. The structure is simple, easy to manufacture, and low in cost.

[0086] Secondly, this application also provides a screening machine, including a screening machine body, on which the screening structure provided in any of the above embodiments is provided.

[0087] The sieving structure has been described in detail in the above embodiments, and will not be repeated here.

[0088] Specifically, the support frame 110 can be part of the screening machine body, and each support bar 120 forms the upper screen inside the screening machine. An additional upper screen for separating sand balls or sand particles can also be installed below the screening machine body. Furthermore, a vibrator or similar device can be installed below the screening machine body; the specific structure can be determined according to actual needs.

[0089] The screening machine provided in this application embodiment, by configuring the above-mentioned screening structure, enables the screening machine to facilitate the falling of sand balls or sand particles, and avoids sand blocks getting stuck in the material drop trough 101, thereby improving the screening efficiency of recycled cast refractory materials and making the screening more thorough.

[0090] Thirdly, such as Figure 6 As shown in the embodiments of this application, a sorting system for recycling cast refractory materials is also provided, including a screening machine provided in any of the above embodiments, a main material bin 10, a conveyor 20, multiple material bins 30, a receiving device 40, and an elevator 50. The main material bin 10 is used to convey mixed sand to the screening machine through the conveyor 20.

[0091] The screening machine is used to separate the mixed sand material into sand blocks, sand balls and sand particles, which are then temporarily stored in each of the distribution bins 30.

[0092] The receiving device 40 is used to receive sand blocks, sand balls or sand grains in each material distribution bin 30 and transfer them to the preset work position via the elevator 50.

[0093] Specifically, the main silo 10 is used to store mixed sand containing sand blocks, sand balls, and sand grains. It can be set on the workshop floor, and valves and vibrating feeders can be installed below it to supply the mixed sand to the conveyor 20, such as a belt conveyor. One end of the conveyor 20 is located below the main silo 10, and the other end of the conveyor 20 is located at the feed end of the screening machine. The discharge end of the screening machine is provided with distribution silos 30, so that the screening machine can temporarily store the separated sand blocks, sand balls, and sand grains in the respective distribution silos 30. The receiving device 40 can be a receiving trolley located below each distribution silo 30 to receive the sand in each distribution silo 30. The elevator 50 is located on one side of the receiving device 40 and can lift the receiving device 40 together with the received sand to the ground for transfer to a preset work station for recycling.

[0094] In addition, iron removers, dust collectors, etc. can be installed above the conveyor 20. The screening machine can be set as a closed type. The main material bin 10, conveyor 20, multiple material bins 30, receiving device 40 and elevator 50 can be automatically controlled by electrical control to reduce labor costs and intensity.

[0095] The sorting system for recycled cast refractory materials provided in this application embodiment, by configuring the above-mentioned screening machine, enables the screening machine to facilitate the falling of sand balls or sand particles, and avoids sand blocks getting stuck in the material drop trough 101, thereby improving the screening efficiency of recycled cast refractory materials and making the screening more thorough.

[0096] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0097] It should be understood that this application is not limited to the precise structures described above and shown in the appendix, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A screening structure, characterized in that, include: A screening assembly (100) has a plurality of discharge troughs (101), each of the discharge troughs (101) extending along a first direction and spaced apart along a second direction, the first direction intersecting the second direction, the discharge troughs (101) being used to separate at least a portion of the sand blocks; At least one auxiliary discharge mechanism (200) is provided, the auxiliary discharge mechanism (200) includes a support rod (210) and at least one auxiliary discharge assembly (220), the support rod (210) is arranged below the discharge chute (101) along the second direction and is rotatably mounted on the screening assembly (100); the auxiliary discharge assembly (220) is mounted on the support rod (210) and has at least one auxiliary discharge section (2201) on the auxiliary discharge assembly (220), the auxiliary discharge section (2201) corresponding to the adjacent discharge chute (101); A drive mechanism (300) is disposed on the screening assembly (100) and is connected to the support rod (210) in a transmission manner; the drive mechanism (300) is configured to drive the support rod (210) to rotate, so that the auxiliary discharge part (2201) is deflected upward into the discharge chute (101) to push the sand block stuck in the discharge chute (101) upward; The auxiliary discharge mechanism (200) also includes an elastic element (230), which is connected to the support rod (210) and the screening assembly (100) respectively. The drive mechanism (300) is further configured to drive the support rod (210) to rotate by a preset angle and then separate from the support rod (210); the elastic element (230) is configured to drive the support rod (210) to swing toward the starting position; The support rod (210) is connected to a swing arm (211) at least at one end, and the number of elastic elements (230) is two; Along the first direction, the two elastic elements (230) are respectively arranged on both sides of the swing arm (211) and respectively connected to the swing arm (211) and the screening assembly (100). The drive mechanism (300) includes a transmission member (310) and a drive assembly (320), wherein the transmission member (310) is movably disposed on the screening assembly (100) along the first direction; The transmission member (310) has at least one protrusion (311) on the side facing the swing arm (211), and the swing arm (211) has a contact portion (212) on the side facing the transmission member (310). The drive assembly (320) is disposed on the screening assembly (100) and is connected to the transmission member (310) in a transmission manner. The drive assembly (320) is configured to drive the transmission member (310) to move, so that the protrusion (311) contacts the adjacent contact portion (212), and push the swing arm (211) to rotate by the preset angle and then separate from the contact portion (212). There are two auxiliary discharge sections (2201), and along the first direction, the two auxiliary discharge sections (2201) are respectively located on both sides of the auxiliary discharge assembly (220); The auxiliary discharge assembly (220) also has a counterweight (2202) located between the two auxiliary discharge assemblies (2201).

2. The screening structure according to claim 1, characterized in that, The auxiliary discharge assembly (220) includes a plurality of auxiliary discharge components (221), each of the auxiliary discharge components (221) is arranged at intervals along the second direction, and each of the auxiliary discharge sections (2201) corresponds one-to-one with each of the discharge troughs (101); Each of the auxiliary discharge components (221) is connected to the support rod (210), and the auxiliary discharge part (2201) is located on one side of the auxiliary discharge component (221) along the first direction; And / or, the auxiliary discharge mechanism (200) is arranged in a plurality of spaced intervals along the first direction.

3. The screening structure according to claim 2, characterized in that, The auxiliary discharge assembly (220) also includes multiple connectors (222), and the support rod (210) contacts the bottom of the screening assembly (100) at positions corresponding to both sides of the discharge chute (101); The adjacent auxiliary discharge components (221) are connected by the connector (222), which is located on the side away from the support rod (210).

4. The screening structure according to any one of claims 1 to 3, characterized in that, The screening assembly (100) includes a support frame (110) and a plurality of support bars (120). Along the second direction, each of the support bars (120) is spaced apart on the support frame (110) to form the material drop chute (101). The drive mechanism (300) is disposed on the support frame (110).

5. A screening machine, characterized in that, It includes a screening machine body, wherein the screening machine body is provided with a screening structure as described in any one of claims 1 to 4.

6. A sorting system for recycling molten refractory materials, characterized in that, Includes the screening machine as described in claim 5, as well as a main silo (10), a conveyor (20), multiple distribution silos (30), a receiving device (40), and an elevator (50), wherein the main silo (10) is used to convey mixed sand to the screening machine via the conveyor (20); The screening machine is used to separate the mixed sand into sand blocks, sand balls and sand grains, and temporarily store them in each of the material distribution bins (30); The receiving device (40) is used to receive the sand blocks, sand balls or sand grains in each of the material distribution bins (30) and transfer them to the preset work station via the elevator (50).

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