Screening machine

Abstract

The screening machine comprises a first screening assembly, a second screening assembly and a third screening assembly, the first screening assembly comprises a first screening area and a first material falling area, and the first screening area is located above the first material falling area; the first screening assembly screens materials in a vibration mode to obtain a mixture of a target object and a first material and a second material, and the mixture falls into the first material falling area. The mixture in the first blanking area enters a second screening assembly, and the second screening assembly separates the target object and the first material in a vibration mode; the third screening assembly comprises a second screening area and a third screening area, the second screening area is located above the third screening area, target objects obtained through screening in the second screening assembly enter the second screening area, foreign matter in the target objects is separated through the third screening assembly, and the target objects and small foreign matter with the size not larger than that of the target objects fall into the third screening area; and small foreign matters of which the sizes are smaller than those of the target objects fall down from the third screening area.

Description

Technical Field

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

[0002] As electronic equipment gradually develops towards miniaturization, lightness, digitization and multifunctionality, ceramic electronic components have been more widely used. The production of ceramic electronic components usually involves first forming ceramic electronic component chips, and then forming external electrodes through a termination process.

[0003] Usually, metal balls and ceramic balls for dispersion need to be added to the electroplating solution during the end-capping process. After the electroplating process is completed, the ceramic electronic components, metal balls and ceramic balls need to be separated. Currently, the screening machine has a low screening efficiency and can only screen products, metal balls and ceramic balls. Some product debris and sticky products cannot be screened. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the present application provides a screening machine, and the technical solution adopted is as follows.

[0005] The screening machine provided in the present application includes a first screening component, a second screening component and a third screening component, the first screening component includes a first screening zone and a first drop zone, the first screening zone is located above the first drop zone, the first screening component screens the material to obtain a mixture of a target object, a first material and a second material in a vibration manner, and the mixture falls into the first drop zone; the mixture in the first drop zone enters the second screening component, and the second screening component separates the target object and the first material in a vibration manner; the third screening component includes a second screening zone and a third screening zone, the second screening zone is located above the third screening zone, the target object obtained by screening in the second screening component enters the second screening zone, the third screening component separates foreign matter in the target object, and the target object and small foreign matter whose size does not exceed the target object fall into the third screening zone, and small foreign matter whose size is smaller than the target object falls from the third screening zone.

[0006] In certain embodiments of the present application, the screening machine includes a feed assembly, which includes a feed area and a hopper, the hopper is arranged above the feed area, and the feed area transports materials to the first screening area in a vibrating manner.

[0007] In certain embodiments of the present application, the feed assembly includes a scraper, which is arranged on the upper side of the bottom plate of the feed area, and the bottom plate surface of the feed area is provided with at least two recessed conveying grooves, and the conveying grooves are arranged along a first direction parallel to the length direction of the feed area. The bottom of the scraper is provided with an inclined guide surface, and along the first direction, the distance between the guide surface and the bottom plate of the feed area gradually decreases.

[0008] In certain embodiments of the present application, the first screening area is provided with a second drop area, and the second material is transported to the second drop area in a vibrating manner; the second drop area includes a second drop guide groove and a second drop opening, and the second drop opening is arranged at the bottom or end of the second drop guide groove; the bottom plate of the second drop guide groove is inclined downward, and the second drop opening is arranged at the bottom formed by the inclination of the second drop guide groove.

[0009] In some embodiments of the present application, relative to a second direction perpendicular to the first direction on the surface of the first screening area, the length direction of the second material drop guide groove is inclined along the second direction; or, the length direction of the second material drop guide groove is parallel to the second direction.

[0010] In certain embodiments of the present application, the second screening assembly includes a feed inclined plate, a first sorting plate and a sorting bottom plate, the first sorting plate is arranged above the sorting bottom plate, the first sorting plate and the sorting bottom plate are both arranged inclined relative to the horizontal plane, and the front end of the first sorting plate and the sorting bottom plate are higher than the rear end, the front end of the feed inclined plate is lower than the rear end, and the mixture falls from the feed inclined plate into the first sorting plate, the first material rolls backward on the first sorting plate, and the target object falls from the front end of the first sorting plate under the vibration of the second screening assembly.

[0011] In certain embodiments of the present application, the second screening assembly includes at least one second sorting plate, which is arranged between the first sorting plate and the sorting bottom plate, the second sorting plate is arranged at an angle relative to a horizontal plane, and the front end of the second sorting plate is higher than the rear end.

[0012] In certain embodiments of the present application, the second screening assembly includes a baffle, and the front end and / or rear end of the first sorting plate is obliquely provided with the baffle, and the interval between the baffle and the first sorting plate forms an area for materials to fall.

[0013] In certain embodiments of the present application, an angle adjustment component is provided at the bottom of the second screening component, and the angle adjustment component is used to adjust the inclination angle of the second screening component.

[0014] In certain embodiments of the present application, the number of the second screening components is two, and the two second screening components are disposed at the front end and the rear end of the third screening component to perform primary screening and secondary screening on the target object and the first material.

[0015] The embodiments of the present application have at least the following beneficial effects: the screening machine uses the first screening component, the second screening component and the third screening component to screen the material at least three times, thereby screening the material into the target object, the first material, the second material and the foreign matter, and when the third screening component screens out the foreign matter, the second screening area and the third screening area are used to screen out the large foreign matter and the small foreign matter respectively, and further screen out the target object. The present application can be widely used in the field of material screening technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easy to understand in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0017] Figure 1 This is the structural diagram of the screening machine.

[0018] Figure 2 This is a structural diagram of the feeding component.

[0019] Figure 3 This is a structural diagram of the first screening component.

[0020] Figure 4 This is a structural diagram of the second screening component.

[0021] Figure 5 A cross-sectional view of the second screening assembly.

[0022] Figure 6 This is a structural diagram of the third screening component.

[0023] Figure markings: 1000, first screening component; 1100, first screening section; 1101, second material drop guide trough; 1102, second material drop port; 1200, first material drop section; 2000, second screening component; 2101, feed inclined plate; 2201, first sorting plate; 2202, second sorting plate; 2203, baffle; 2300, sorting bottom plate; 2301, third material drop guide trough; 3000, third screening component; 3100, second screening section; 3200, third screening section; 4000, feed component; 4100, feed section; 4101, scraper; 4102, third support frame; 4103, fourth support frame; 4200, hopper. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 To Attachment Figure 6 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0025] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The features defined as "first" and "second" are used to distinguish the feature names, rather than having special meanings. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present application relates to a screening machine, which includes a first screening component 1000, a second screening component 2000 and a third screening component 3000. The first screening component 1000 screens a mixture of a target object and a first material and a second material from a material in a vibration manner, the second screening component 2000 screens a target object from the mixture in a vibration manner, and the third screening component 3000 screens foreign matter from the target object in a vibration manner. Specifically, the target object is a product, the first material is a metal ball, and the second material is a ceramic ball.

[0028] The screening machine includes a feed assembly 4000, which feeds the first screening assembly 1000. Specifically, the feed assembly 4000 includes a feed area 4100, which conveys materials to the first screening assembly 1000. The feed area 4100 vibrates to feed the materials. During the vibration feeding process, the materials can be spread and dispersed in the feed area 4100 for screening. In conjunction with the accompanying drawings, the feed area 4100 is provided with side panels to prevent materials from falling.

[0029] The feed component 4000 and the first screening component 1000 are respectively equipped with vibrators to form a split direct vibration effect. It should be noted that if the feed component 4000 and the first screening component 1000 share a vibrator, on the one hand, the overall weight of the vibrator is too large, the size is large, and the screening speed is slow and the screening effect is poor; on the other hand, it is inconvenient to disassemble and replace the first screening area 1100.

[0030] At least two concave conveying grooves are provided on the bottom plate surface of the feeding area 4100, and the conveying grooves are arranged along a first direction parallel to the length direction of the feeding area 4100. In conjunction with the accompanying drawings, the conveying grooves are arranged at intervals on the bottom plate surface of the feeding area 4100. The conveying grooves extend in the feeding area 4100 to the end close to the first screening assembly 1000, and a notch is formed so that the material in the conveying groove can be sent out from the feeding area 4100.

[0031] The bottom plate in the feeding area 4100 is configured to have at least two steps so that the material can be transported layer by layer in the feeding area 4100 .

[0032] The feed assembly 4000 includes a scraper 4101, which is arranged on the upper side of the bottom plate of the feed area 4100, and a gap is left between the bottom of the scraper 4101 and the upper side of the bottom plate of the feed area 4100. The scraper 4101 is arranged in a direction parallel to the second direction, and the scraper 4101 is used to scrape the material in the feed area 4100 flat.

[0033] Under the action of the scraper 4101, the material in the feeding area 4100 can be further spread and dispersed to make the material evenly distributed. In conjunction with the drawings, when the bottom plate of the feeding area 4100 is set in a step shape, the scraper 4101 is located on the upper side of the highest level bottom plate.

[0034] The bottom of the scraper 4101 is provided with an inclined guide surface, and the distance between the guide surface and the bottom plate of the feeding area 4100 gradually decreases along the direction parallel to the first direction, so as to form a gap that is first large and then small. In this case, the guide surface can be used to ensure that the material passes through the bottom of the scraper 4101, and it is also convenient for the scraper 4101 to scrape the material flat.

[0035] The height of the scraper 4101 relative to the bottom plate of the feeding area 4100 is adjustable. Specifically, the feeding assembly 4000 includes a third support frame 4102, both ends of the third support frame 4102 are respectively connected to the side plates, the scraper 4101 is connected to the third support frame 4102 by screws or bolts, and the scraper 4101 is provided with a vertical waist-shaped hole to adjust the height of the scraper 4101.

[0036] The feeding assembly 4000 includes a fourth support frame 4103 , both ends of which are connected to the side panels of the feeding area 4100 , and a sensor is disposed on the fourth support frame 4103 , and the sensor is used to detect whether there is material in the feeding area 4100 .

[0037] The feeding assembly 4000 includes a hopper 4200 , which is disposed above the feeding area 4100 . The material enters the feeding area 4100 from the hopper 4200 , and the hopper 4200 discharges the material in a vibrating manner.

[0038] The height of the hopper 4200 is adjustable to adjust the distance between the outlet at the bottom of the hopper 4200 and the feeding area 4100. In conjunction with the accompanying drawings, the screening machine includes a first lifting support assembly, the hopper 4200 is connected to the first lifting support assembly, the first lifting support assembly plays the role of supporting the hopper 4200 and adjusting the height of the hopper 4200, and in conjunction with the accompanying drawings, the top of the first lifting support assembly is connected to the hopper 4200 through a first support frame.

[0039] The first lifting support assembly includes at least two first lifting assemblies, and the first lifting assembly includes a telescopic cylinder. Alternatively, the first lifting assembly can be designed to lift the hopper 4200 in the form of a screw pair.

[0040] At least one of the feed assembly 4000 and the first screening assembly 1000 is height-adjustable.

[0041] In some examples, the heights of the feed assembly 4000 and the first screening assembly 1000 are both adjustable. Specifically, the screening machine includes a second lifting support assembly, the second lifting support assembly includes a second support plate and at least two second lifting assemblies, the second support plate connects the tops of the second lifting assemblies, and the feed assembly 4000 and the first screening assembly 1000 are both arranged on the second support plate. The second lifting assembly includes a telescopic cylinder, or, alternatively, the design is: the second lifting assembly lifts the feed assembly 4000 and the first screening assembly 1000 in the form of a screw pair.

[0042] In some alternative examples, the feed assembly 4000 and the first screening assembly 1000 can adjust their heights separately. In this case, the feed assembly 4000 and the first screening assembly 1000 are respectively configured with lifting support assemblies.

[0043] In some other alternative examples, the height of the feed assembly 4000 or the first screening assembly 1000 is adjustable.

[0044] The first screening component 1000 includes a first screening section 1100, and the feeding section 4100 is located at the feeding end of the first screening section 1100, and the feeding section 4100 conveys the material to the first screening section 1100 in a vibrating manner. The bottom plate of the first screening section 1100 is set as a screen plate. In conjunction with the accompanying drawings, the first screening component 1000 includes a first drop zone 1200, and the first screening section 1100 is located above the first drop zone 1200, and the mixture falls into the first drop zone 1200. Further, the first screening section 1100 is provided with a second drop zone, and the second drop zone is located at the discharge end of the first screening section 1100, and the second material is vibrated and conveyed to the second drop zone.

[0045] The second material drop zone includes a second material drop guide 1101, which is configured as a groove body with a concave shape at the discharge end of the first screening zone 1100, and the second material drop guide 1101 is horizontally placed at the outlet end of the first screening zone 1100, so that the materials in the second material drop zone can all fall into the second material drop guide 1101. Further, the second material drop zone includes a second material drop opening 1102, which is configured at the bottom or end of the second material drop guide 1101, and the second material drop opening 1102 is located at a side edge of the first screening zone 1100 parallel to the first direction, and the materials in the second material drop guide 1101 are discharged from the second material drop opening 1102.

[0046] In some examples, the bottom plate of the second material drop guide 1101 is tilted downward, one end of the bottom plate of the second material drop guide 1101 is higher than the other end, and the second material drop port 1102 is arranged at the bottom formed by the tilt in the second material drop guide 1101, so that the material in the second material drop guide 1101 can roll along the tilted bottom plate to the second material drop port 1102 for easy discharge.

[0047] The slope of the bottom plate of the second blanking guide trough 1101 is set to 3 to 6 degrees.

[0048] The length direction of the second material drop guide 1101 is inclined relative to the second direction perpendicular to the first direction on the surface of the first screening section 1100, so that the materials of the first screening section 1100 fall into the second material drop guide 1101 successively. Alternatively, the second material drop guide 1101 is arranged in a direction parallel to the second direction.

[0049] The first screening area 1100 is provided with strip sieve holes, and on the first screening area 1100, the target object and the first material can fall through the strip sieve holes, but the second material cannot fall through. In conjunction with the accompanying drawings, the strip sieve holes are arranged in at least two groups, and each group has at least one row of strip sieve holes along a direction parallel to the second direction. Furthermore, along a direction parallel to the first direction, the spacing between two adjacent groups of strip sieve holes gradually increases. There are many materials near the feed end of the first screening area 1100, so the spacing between the strip sieve holes in front is small and densely distributed, so that most of the second material can be quickly screened out.

[0050] The first screening area 1100 is made by milling a hard aluminum alloy plate. Compared with an etched plate, it has stronger rigidity and a smoother surface, making it easier to open strip-shaped screening holes.

[0051] The mixture screened by the first screening component 1000 into the first drop zone 1200 enters the second screening component 2000, and the second screening component 2000 separates the target object and the first material by vibration. Specifically, the second screening component 2000 includes a first sorting plate 2201, and the mixture falls into the first sorting plate 2201, and the target object and the first material are separated on the first sorting plate 2201. In conjunction with the accompanying drawings, the second screening component 2000 is tilted, the first sorting plate 2201 is tilted relative to the horizontal plane, and the front end of the first sorting plate 2201 is higher than the rear end. Taking advantage of the characteristic of the metal ball being easy to roll, the metal ball as the first material rolls backward on the first sorting plate 2201, and the target object falls from the front end of the first sorting plate 2201 under the vibration of the second screening component 2000.

[0052] The second screening assembly 2000 includes a feed inclined plate 2101, the front end of which is lower than the rear end, and the feed inclined plate 2101 is arranged in the second screening assembly 2000, and the feed inclined plate 2101 is located on the upper side of the first sorting plate 2201, and the front end of the feed inclined plate 2101 is close to the first sorting plate 2201. In conjunction with the drawings, the feed inclined plate 2101 is arranged obliquely relative to the first sorting plate 2201, and under the guidance of the feed inclined plate 2101, the mixture falls from the feed inclined plate 2101 into the first sorting plate 2201.

[0053] The second screening assembly 2000 includes a sorting bottom plate 2300, a first sorting plate 2201 is arranged above the sorting bottom plate 2300, and the first material falls from the rear end of the first sorting plate 2201 to the sorting bottom plate 2300, and is discharged from the rear end of the sorting bottom plate 2300. Further, the sorting bottom plate 2300 is arranged obliquely relative to the horizontal plane, and the front end of the sorting bottom plate 2300 is higher than the rear end. Further, the rear end of the sorting bottom plate 2300 is provided with a third material drop area, and the material falling on the sorting bottom plate 2300 rolls backwards and enters the third material drop area.

[0054] Specifically, the first material rolls on the first sorting plate 2201 and falls from the rear end of the first sorting plate 2201 and rolls backward on the sorting bottom plate 2300 to the third drop zone, and the second screening assembly 2000 moves the screened target forward on the first sorting plate 2201 in a vibrating manner, and drops from the front end of the first sorting plate 2201, and then discharges the material at the front end of the sorting bottom plate 2300. It can be understood that since the sorting bottom plate 2300 is also arranged at an angle, the metal ball as the first material also rolls backward on the sorting bottom plate 2300, and under the action of vibration, the target moves forward on the sorting bottom plate 2300.

[0055] The third material dropping area includes a third material dropping guide groove 2301, which is arranged at the rear end of the sorting bottom plate 2300, and is arranged in a direction parallel to the second direction, or the third material dropping guide groove 2301 is arranged obliquely relative to the second direction. The third material dropping area includes a third material dropping opening, which is arranged at the bottom or end of the third material dropping guide groove 2301, and the material in the third material dropping guide groove 2301 is discharged from the third material dropping opening.

[0056] The bottom plate of the third material drop guide 2301 is arranged at an angle, and one end of the bottom plate of the third material drop guide 2301 is higher than the other end, so that the material in the third material drop guide 2301 can roll along the inclined bottom plate, and the third drop port is located at the bottom formed by the inclination of the third material drop guide 2301, which is convenient for discharging materials.

[0057] The slope of the bottom plate of the third blanking guide trough 2301 is set to 3 to 10 degrees.

[0058] Side plates are provided on both sides of the sorting bottom plate 2300 parallel to the first direction to prevent materials from falling. In conjunction with the accompanying drawings, the side plates are tilted inward at the outlet of the sorting bottom plate 2300 close to the next device to form an outlet with a narrow end of the sorting bottom plate 2300. Further, the first sorting plate 2201 and the feed inclined plate 2101 are respectively connected to the side plates so that the first sorting plate 2201 and the feed inclined plate 2101 are installed in the second screening assembly 2000. Further, the second screening assembly 2000 is equipped with a vibrator, and the lower side of the sorting bottom plate 2300 is connected to the vibrator.

[0059] The second screening assembly 2000 includes a baffle 2203, and the front and rear ends of the first sorting plate 2201 are respectively provided with baffles 2203 at an angle, and the baffles 2203 are tilted and tilted relative to the upper side of the first sorting plate 2201, and the two ends of the baffle 2203 are respectively connected to the side plates. In conjunction with the accompanying drawings, the interval between the baffle 2203 and the first sorting plate 2201 forms an area for materials to fall, and the area is set as the sixth drop area. The target object falls from the sixth drop area at the front end of the first sorting plate 2201, and the first material falls from the sixth drop area at the rear end of the first sorting plate 2201. At the front end of the first sorting plate 2201, the baffle 2203 is used to prevent the first material from falling from the front end due to excessive rolling speed. At the rear end of the first sorting plate 2201, the baffle 2203 is used to prevent the first material from rebounding after falling from the first sorting plate 2201.

[0060] Of course, as an alternative, it can also be designed as follows: a baffle 2203 is provided at the front end of the first sorting plate 2201, or a baffle 2203 is provided at the rear end of the first sorting plate 2201.

[0061] The second screening assembly 2000 includes a second sorting plate 2202, which is arranged between the first sorting plate 2201 and the sorting bottom plate 2300. The second sorting plate 2202 is arranged at an angle relative to the horizontal plane, and the front end of the second sorting plate 2202 is higher than the rear end. In conjunction with the accompanying drawings, the two ends of the second sorting plate 2202 extend to positions exceeding the front end and the rear end of the first sorting plate 2201, respectively, so that the fallen materials can be sorted on the second sorting plate 2202, and the mixed first materials and target objects can be further separated. It should be noted that some metal balls may fall from the front end of the first sorting plate 2201 and mix into the product, so the second sorting plate 2202 is designed to further separate the metal balls and the product.

[0062] There is at least one second sorting plate 2202. Specifically, when there are at least two second sorting plates 2202, from top to bottom, each second sorting plate 2202 is layered and spaced apart from each other and arranged between the first sorting plate 2201 and the sorting bottom plate 2300.

[0063] An angle adjustment component is provided at the bottom of the second screening component 2000, and the second screening component 2000 is connected to the angle adjustment component. The angle adjustment component is used to adjust the inclination angle of the second screening component 2000 so that the first sorting plate 2201, the sorting bottom plate 2300 and the second sorting plate 2202 are adjusted to the set angle so that the target object can be transported upward along the slope under vibration.

[0064] The angle adjustment assembly includes an articulated seat and a lifting assembly, the second screening assembly 2000 is articulated to the articulated seat, the lifting assembly is connected to the second screening assembly 2000, and the second screening assembly 2000 adjusts the tilt angle under the drive of the lifting assembly. In conjunction with the accompanying drawings, the second screening assembly 2000 includes a base, a vibrator is arranged on the upper side of the base, one end of the base is articulated to the articulated seat, and the other end of the base is connected to the lifting assembly.

[0065] The lifting assembly includes a scissor jack or a vertical jack.

[0066] The second screening assembly 2000 has an inclination angle of 0 to 16° relative to the horizontal plane, and the first sorting plate 2201, the second sorting plate 2202 and the sorting bottom plate 2300 are arranged in layers and in parallel, and the inclination angles are all 0 to 16°.

[0067] The second screening assembly 2000 is provided in two parts, and the two second screening assemblies 2000 are respectively a primary screening assembly and a secondary screening assembly, so as to further sort the target object and reduce the first material mixed in the target object. In conjunction with the accompanying drawings, the two second screening assemblies 2000 are provided at the front end and the rear end of the third screening assembly 3000 to perform primary screening and secondary screening on the target object and the first material.

[0068] The third screening component 3000 includes a second screening section 3100. The target object obtained by screening in the second screening component 2000 enters the second screening section 3100. The target object falls from the second screening section 3100, and large foreign objects larger than the target object remain in the second screening section 3100. The second screening section 3100 includes a fourth drop zone. Under the action of vibration, the large foreign objects in the second screening section 3100 are transported to the fourth drop zone. Further, the fourth drop zone includes a fourth drop guide groove and a fourth drop opening, and the fourth drop opening is set in the fourth drop guide groove.

[0069] The third screening component 3000 includes a third screening area 3200, the second screening area 3100 is located above the third screening area 3200, and the target object and small foreign objects whose size does not exceed the target object fall into the third screening area 3200, and the small foreign objects whose size is smaller than the target object fall from the third screening area 3200 to further screen the target object. The third screening component 3000 includes a fifth drop area, which is located below the third screening area 3200, and the small foreign objects fall from the third screening area 3200 to the fifth drop area.

[0070] The height of the third screening assembly 3000 is adjustable. Specifically, the screening machine includes a third lifting support assembly, which includes a third support plate and at least two third lifting assemblies. The third support plate is connected to the top of the third lifting assembly, and the third screening assembly 3000 is arranged on the third support plate. The third lifting assembly includes a telescopic cylinder, or, alternatively, the third lifting assembly lifts the third screening assembly 3000 in the form of a screw rod pair.

[0071] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0072] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

[0073] In the description of this application, if "," appears in the patent name, it means an "and" relationship, not an "or" relationship. For example, if the patent name is "a kind of A, B", it means that the content required to be protected by this application is: the technical solution with the subject name A and the technical solution with the subject name B.

Claims

1. A screening machine, characterized in that: include A first screening component (1000), the first screening component (1000) comprising a first screening section (1100) and a first material dropping section (1200), the first screening section (1100) being located above the first material dropping section (1200), the first screening component (1000) screening the material in a vibration manner to obtain a mixture of a target object and the first material and a second material, and the mixture falls into the first material dropping section (1200); a second screening component (2000), wherein the mixture in the first material drop zone (1200) enters the second screening component (2000), and the second screening component (2000) separates the target object and the first material by vibration; A third screening component (3000), the third screening component (3000) comprising a second screening section (3100) and a third screening section (3200), the second screening section (3100) being located above the third screening section (3200), the target object obtained by screening in the second screening component (2000) entering the second screening section (3100), the third screening component (3000) separating foreign matter from the target object, and the target object and small foreign matter whose size does not exceed that of the target object fall into the third screening section (3200), and small foreign matter whose size is smaller than that of the target object falls from the third screening section (3200).

2. The screening machine according to claim 1, characterized in that: The screening machine includes a feed assembly (4000), and the feed assembly (4000) includes a feed area (4100) and a hopper (4200). The hopper (4200) is arranged above the feed area (4100), and the feed area (4100) transports materials to the first screening area (1100) in a vibrating manner.

3. The screening machine according to claim 2, characterized in that: The feed assembly (4000) includes a scraper (4101), and the scraper (4101) is arranged on the upper side of the bottom plate of the feed area (4100). The bottom plate surface of the feed area (4100) is provided with at least two recessed conveying grooves, and the conveying grooves are arranged along a first direction parallel to the length direction of the feed area (4100). The bottom of the scraper (4101) is provided with an inclined guide surface, and along the first direction, the distance between the guide surface and the bottom plate of the feed area (4100) gradually decreases.

4. The screening machine according to claim 1, characterized in that: The first screening area (1100) is provided with a second material dropping area, and the second material is transported to the second material dropping area in a vibrating manner; the second material dropping area includes a second material dropping guide groove (1101) and a second material dropping opening (1102), and the second material dropping opening (1102) is arranged at the bottom or end of the second material dropping guide groove (1101); the bottom plate of the second material dropping guide groove (1101) is inclined downward, and the second material dropping opening (1102) is arranged at the bottom formed by the inclination of the second material dropping guide groove (1101).

5. The screening machine according to claim 4, characterized in that: Relative to a second direction on the surface of the first screening area (1100) which is perpendicular to the first direction, the length direction of the second blanking guide groove (1101) is arranged obliquely along the second direction; or, the length direction of the second blanking guide groove (1101) is parallel to the second direction.

6. The screening machine according to claim 1, characterized in that: The second screening component (2000) comprises a feed inclined plate (2101), a first sorting plate (2201) and a sorting bottom plate (2300), wherein the first sorting plate (2201) is arranged above the sorting bottom plate (2300), the first sorting plate (2201) and the sorting bottom plate (2300) are both arranged at an inclination relative to a horizontal plane, and the front ends of the first sorting plate (2201) and the sorting bottom plate (2300) are higher than the rear ends, the front end of the feed inclined plate (2101) is lower than the rear end, and the mixture falls from the feed inclined plate (2101) into the first sorting plate (2201), the first material rolls backward on the first sorting plate (2201), and the target object falls from the front end of the first sorting plate (2201) under the vibration of the second screening component (2000).

7. The screening machine according to claim 6, characterized in that: The second screening assembly (2000) comprises at least one second sorting plate (2202), wherein the second sorting plate (2202) is arranged between the first sorting plate (2201) and the sorting bottom plate (2300), the second sorting plate (2202) is arranged inclined relative to a horizontal plane, and the front end of the second sorting plate (2202) is higher than the rear end.

8. The screening machine according to claim 6, characterized in that: The second screening assembly (2000) comprises a baffle (2203), the front end and / or rear end of the first sorting plate (2201) being obliquely provided with the baffle (2203), and the interval between the baffle (2203) and the first sorting plate (2201) forms an area for materials to fall.

9. The screening machine according to claim 6, characterized in that: An angle adjustment component is provided at the bottom of the second screening component (2000), and the angle adjustment component is used to adjust the inclination angle of the second screening component (2000).

10. The screening machine according to any one of claims 1 to 9, characterized in that: The second screening components (2000) are provided in two numbers, and the two second screening components (2000) are provided at the front end and the rear end of the third screening component (3000) to perform primary screening and secondary screening on the target object and the first material.

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