Steel ball screening assembly and steel ball screening system

Abstract

The utility model discloses a steel ball screening assembly and steel ball screening system.The steel ball screening assembly comprises at least one steel ball screening unit, each steel ball screening unit comprises a mounting table, a rolling rod mechanism, a screening benchmark mechanism and an adjusting mechanism, each rolling rod mechanism comprises a rolling rod and a rolling rod rotation driving unit, and the two ends of each rolling rod are rotatably connected to a rotating seat respectively; the rotating seat is mounted on the mounting table; the screening reference mechanism comprises a reference plate, the two ends of the reference plate are connected to the mounting table through base plate bases correspondingly, and a gap used for screening steel balls is formed between the reference plate and the rolling rod. The adjusting mechanism can drive the base plate base or the rotating base to move so as to adjust the width of the gap, during sorting, the datum plate does not move, the rolling rods roll for screening, compared with a traditional double-rolling-rod mechanism, the rolling error is reduced, the machining precision of the datum plate is far higher than that of the rolling rods under the similar machining cost, and therefore better screening precision can be obtained.

Description

Technical Field

[0001] This utility model relates to the technical field of steel ball production equipment, and in particular to a steel ball screening component and a steel ball screening system. Background Technology

[0002] Currently, commonly used steel ball sorting generally employs a double roller mechanism. For example, the applicant's earlier patent application, with patent number "CN201220634590.X" and titled "A High-Precision Roller Device for Sorting Steel Balls," describes a double roller sorting mechanism in which one or two rollers are driven to rotate by a rotating mechanism. However, in practical applications, the rollers are custom-made parts, and the machining accuracy is difficult to guarantee. In particular, the length and angle of the rollers are difficult to maintain consistency over a long distance when machined on a lathe, which results in certain errors in steel ball sorting and affects the normal sorting of steel balls. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a steel ball sorting assembly that can improve the reliability and accuracy of steel ball sorting.

[0004] This utility model also proposes a steel ball screening system.

[0005] A steel ball screening assembly according to a first aspect of the present invention includes: at least one steel ball screening unit, the steel ball screening unit including: a mounting platform, a roller mechanism, a screening reference mechanism, and an adjustment mechanism; the roller mechanism includes a roller and a roller rotation drive unit capable of driving the roller to rotate; both ends of the roller are rotatably connected to a rotating base, the rotating base being mounted on the mounting platform; the screening reference mechanism includes a reference plate, both ends of the reference plate being connected to the mounting platform via a base plate seat; a gap for screening steel balls is formed between the reference plate and the roller; the adjustment mechanism is disposed on the mounting platform and capable of driving the base plate seat or the rotating base to move to adjust the width of the gap.

[0006] The steel ball sorting assembly according to the present invention has at least the following beneficial effects: the steel ball is fed into the gap, and when the steel ball rolls in the gap, it falls to a set position according to the different gap widths, thereby realizing the sorting of the steel ball. During sorting, the reference plate does not move, and the roller rolls to perform the sorting. Compared with the traditional double roller mechanism, the rolling error is reduced, and the processing accuracy of the reference plate is much higher than that of the roller at a similar processing cost, so better sorting accuracy can be obtained.

[0007] According to some embodiments of the present invention, the reference plate is a knife-edge ruler, and the gap is formed between the cutting edge of the knife-edge ruler and the roller.

[0008] According to some embodiments of the present invention, the substrate base is slidably disposed on the mounting platform, and the adjustment mechanism is capable of driving the substrate base to move. The adjustment mechanism is a lead screw mechanism, which includes a lead screw rotatably disposed on the mounting platform, a slider threadedly engaged with the lead screw, and a rotation drive assembly capable of driving the lead screw to rotate. The slider is connected to the substrate base.

[0009] According to some embodiments of the present invention, the rotation drive assembly is a handwheel or a motor drive assembly.

[0010] According to some embodiments of the present invention, the steel ball screening assembly includes at least two steel ball screening units, and the adjustment mechanisms of the at least two steel ball screening units share the same lead screw and the same rotation drive assembly.

[0011] According to some embodiments of the present invention, the steel ball screening assembly further includes a workbench, and the mounting platform is disposed on the workbench via a tilt adjustment mechanism, the tilt adjustment mechanism being capable of adjusting the tilt angle of the mounting platform relative to the workbench.

[0012] According to some embodiments of the present invention, the middle part of the mounting platform is connected to the worktable via a rotating connection mechanism, and the tilt adjustment mechanism includes a pushing mechanism disposed between one end of the mounting platform and the worktable.

[0013] According to some embodiments of this utility model, the pushing mechanism is a screw mechanism.

[0014] According to some embodiments of the present invention, the steel ball screening unit further includes a steel ball collecting assembly disposed below the gap.

[0015] According to a second aspect of the present invention, a steel ball screening system includes a steel ball screening component, a hopper, and a conveying component, as described in any of the first aspects of the present invention. The hopper is provided with a discharge port. The conveying component connects the hopper and the steel ball screening unit to convey the steel balls output from the discharge port to the gap.

[0016] The steel ball screening system according to the present invention has at least the following beneficial effects: the feeding of the steel ball screening components is achieved through the hopper and the conveying components, thereby meeting the needs of continuous screening.

[0017] According to some embodiments of the present invention, the conveying assembly includes a lifting mechanism, a distributing mechanism, a collecting assembly, and a connecting member. The distributing mechanism includes a sorting component, the upper part of which is provided with a diversion surface. The diversion surface is provided with diversion channels corresponding to the number of steel ball screening units. The lifting mechanism is located at the discharge port and is capable of lifting the steel balls output from the discharge port to be level with or higher than the diversion surface. The collecting assembly includes a collecting component, the collecting component being provided with collecting grooves corresponding one-to-one with the diversion channels. The connecting member connects the collecting grooves to the steel ball screening units.

[0018] According to some embodiments of this utility model, the connecting member is a connecting pipe.

[0019] According to some embodiments of the present invention, the diversion surface is an inclined surface that slopes downward along the conveying direction of the diversion channel.

[0020] According to some embodiments of the present invention, the lifting mechanism includes a lifting member slidably disposed on the sorting member or the hopper and a lifting drive unit capable of driving the lifting member to move up and down, wherein the upper end of the lifting member is a support surface capable of supporting the steel ball.

[0021] According to some embodiments of the present invention, the supporting surface is an inclined surface that slopes downwards along the direction from the hopper toward the collecting assembly.

[0022] According to some embodiments of the present invention, the lifting drive unit includes a drive motor, the output shaft of the drive motor is connected to one end of a crank, the other end of the crank is hinged to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the lifting member. The drive motor, the crank, the connecting rod and the lifting member form a crank-slider mechanism. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the steel ball screening system according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the steel ball screening assembly according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the steel ball screening unit according to an embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the steel ball screening unit according to an embodiment of the present utility model;

[0028] Figure 5 This is a side view of the steel ball screening unit according to an embodiment of the present utility model;

[0029] Figure 6 This is an exploded view of the hopper and conveying assembly according to an embodiment of the present invention;

[0030] Figure 7 This is a partial cross-sectional schematic diagram of the hopper and conveying assembly at the discharge port in an embodiment of the present invention.

[0031] Figure label:

[0032] Steel ball screening unit 100, mounting platform 110, rotating connection mechanism 111, pushing mechanism 112, roller 121, roller rotation drive unit 122, rotating seat 123, reference plate 131, base plate seat 132, lead screw 141, slider 142, handwheel 143, steel ball collecting assembly 150;

[0033] Workbench 200;

[0034] Hopper 300, discharge port 301;

[0035] Lifting component 411, lifting drive unit 412, support surface 413, drive motor 414, crank 415, connecting rod 416, sorting component 420, flow distribution surface 421, flow distribution rib 422, collection component 430, collection trough 431, connecting pipe 440. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] The following is for reference. Figures 1 to 7 This invention describes a steel ball screening assembly and a steel ball screening system according to embodiments of the present invention.

[0041] like Figures 2 to 5 As shown, the steel ball screening assembly according to an embodiment of the present invention includes: at least one steel ball screening unit 100. The steel ball screening unit 100 includes: a mounting platform 110, a roller mechanism, a screening reference mechanism, and an adjustment mechanism. The roller mechanism includes a roller 121 and a roller rotation drive unit 122 capable of driving the roller 121 to rotate. Both ends of the roller 121 are rotatably connected to a rotating base 123, and the rotating base 123 is mounted on the mounting platform 110. The screening reference mechanism includes a reference plate 131, both ends of which are connected to the mounting platform 110 through a base plate seat 132. A gap for screening steel balls is formed between the reference plate 131 and the roller 121. The adjustment mechanism is disposed on the mounting platform 110 and is capable of driving the base plate seat 132 or the rotating base 123 to move to adjust the width of the gap.

[0042] In application, steel balls are fed into the gaps. As the steel balls roll in the gaps, they fall to the set positions according to the different gap widths, thereby achieving the sorting of steel balls. During sorting, the reference plate 131 remains stationary while the roller 121 rolls to perform screening. Compared with the traditional double roller mechanism, this reduces rolling errors. Moreover, the reference plate 131 has a much higher processing accuracy than the roller at a similar processing cost, thus achieving better screening accuracy.

[0043] Specifically, the mounting platform 110 is tilted so that the gap tilts downwards, allowing the steel balls to roll due to their own weight, thereby achieving the purpose of screening. The adjustment mechanism can adjust the width of the gap to accommodate the screening of steel balls of different specifications.

[0044] In some embodiments of this invention, the gap gradually widens along the rolling direction of the steel ball to sort the steel balls from small to large.

[0045] In some embodiments of this utility model, the reference plate 131 is a knife-edge ruler, and a gap is formed between the cutting edge of the knife-edge ruler and the roller 121.

[0046] Specifically, the ruler used can be a commercially available ruler or a custom-made ruler. The cutting edge of the ruler has high precision, which can better ensure the screening accuracy of steel balls, and the cost is lower.

[0047] Of course, in the specific implementation process, the reference plate 131 can also be other machined plates, which will not be described in detail here.

[0048] like Figure 4 As shown, in some embodiments of this utility model, the steel ball screening unit 100 further includes a steel ball collecting assembly 150 disposed below the gap. The steel ball collecting assembly 150 is a collecting funnel and is equipped with an output pipe to facilitate the output of steel balls of a set specification.

[0049] Specifically, the number of collection funnels in the steel ball collection assembly 150 is configured according to the steel ball collection specifications to meet the required sorting requirements.

[0050] Of course, in the specific implementation process, the steel ball collecting component 150 can also be a material tray, etc., which will not be described in detail here.

[0051] like Figure 5 As shown, in some embodiments of this utility model, the roller rotation drive unit 122 is a motor mechanism and is connected to the roller 121 via a connecting belt, chain, etc.

[0052] It is understood that, in some embodiments of this utility model, the roller rotation drive unit 122 may also be directly driven by a motor or driven by a motor gear set mechanism.

[0053] like Figure 4 As shown, in some embodiments of this utility model, the substrate base 132 is slidably disposed on the mounting platform 110, and the adjustment mechanism is a lead screw mechanism. The lead screw mechanism includes a lead screw 141 rotatably disposed on the mounting platform 110, a slider 142 threadedly engaged with the lead screw 141, and a rotation drive assembly capable of driving the lead screw 141 to rotate. The slider 142 is connected to the substrate base 132. By driving the lead screw 141 to rotate through the rotation drive assembly, the slider 142 and the substrate base 132 can be moved.

[0054] Specifically, the lead screw 141 is mounted to the mounting platform 110 via a rotating seat, so that the lead screw 141 can rotate but cannot move axially, so that when the lead screw 141 is driven by the rotation drive assembly, it can drive the slider 142 to move along the axial direction of the lead screw 141.

[0055] like Figure 3 , Figure 4 As shown, in some embodiments of this utility model, the rotation drive component is a handwheel 143, which can drive the lead screw 141 to rotate by rotating the handwheel 143.

[0056] Of course, in the specific implementation process, the rotation drive component can also be a motor drive component, which drives the lead screw 141 to rotate through a servo motor, stepper motor, etc., and can be used in conjunction with the control system to precisely adjust the width of the gap.

[0057] In some embodiments of this utility model, the adjustment mechanism can be configured to drive the rotating base 123 to move, thereby achieving the purpose of adjusting the width of the gap.

[0058] In some embodiments of this utility model, the adjustment mechanism can also be a cam mechanism, which can also achieve the purpose of adjusting the gap by pushing the outer surface of the cam against the rotating seat 123 or the base plate seat 132.

[0059] In some embodiments of this utility model, a compression spring is provided between the rotary base 123 and the base plate 132 to facilitate the reset of the rotary base 123 and the base plate 132.

[0060] Furthermore, the compression spring can also make the threaded fit between the lead screw 141 and the slider 142 more compact, thereby improving the adjustment accuracy.

[0061] like Figure 2 As shown, in some embodiments of this utility model, the steel ball screening assembly includes at least two steel ball screening units 100, and the adjustment mechanisms of the at least two steel ball screening units 100 share the same lead screw 141 and the same rotation drive assembly, so as to synchronously adjust multiple steel ball screening units 100 and improve work efficiency.

[0062] It is understood that in some embodiments of this utility model, the steel ball screening unit 100 can be independently configured with an adjustment mechanism to meet the requirement of independent adjustment of the steel ball screening unit 100.

[0063] like Figure 1 , Figure 2 As shown, in some embodiments of this utility model, the steel ball screening assembly includes four steel ball screening units 100, forming four screening gaps to achieve high screening efficiency.

[0064] Of course, in the specific implementation process, the steel ball screening unit 100 can be configured as two, three, five or more, which will not be described in detail here.

[0065] like Figure 2 , Figure 5 As shown, in some embodiments of this utility model, the steel ball screening assembly further includes a workbench 200, and a mounting platform 110 is disposed on the workbench 200 by an angle adjustment mechanism. The angle adjustment mechanism can adjust the tilt angle of the mounting platform 110 relative to the workbench 200 to adjust the rolling speed of the steel balls.

[0066] In some embodiments of this utility model, the workbench 200 is a thickened ductile iron plate to ensure the positional accuracy of the upper mechanism, thereby improving the accuracy of steel ball screening.

[0067] like Figure 5As shown, in some embodiments of this utility model, the middle part of the mounting platform 110 is connected to the worktable 200 through a rotating connection mechanism 111. The tilt adjustment mechanism includes a pushing mechanism 112 disposed between one end of the mounting platform 110 and the worktable 200. The pushing mechanism 112 pushes the mounting platform 110 to rotate relative to the rotating connection mechanism 111, thereby achieving the purpose of adjusting the tilt angle.

[0068] In some embodiments of this utility model, the jacking mechanism 112 is a screw mechanism, which realizes the jacking of the mounting platform 110 by the relative rotation of the screw and the nut.

[0069] It is understood that in some embodiments of this utility model, the pushing mechanism 112 may also be a cam mechanism, etc., which will not be described in detail here.

[0070] Reference Figure 3 , Figure 6 and Figure 7 According to a second aspect embodiment of the present invention, the steel ball screening system includes a steel ball screening component, a hopper 300, and a conveying component, as described in any of the first aspects of the present invention. The hopper 300 is provided with a discharge port 301. The conveying component connects the hopper 300 and the steel ball screening unit 100 to convey the steel balls output from the discharge port 301 to the gap. The hopper 300 and the conveying component are used to feed the steel ball screening component to meet the needs of continuous screening.

[0071] like Figure 6 As shown, in some embodiments of this utility model, the bottom of the hopper 300 has a V-shaped structure, and the discharge port 301 is located at the bottom of the hopper 300.

[0072] In some embodiments of this utility model, the hopper 300 is equipped with a vibration device to improve the material discharge effect of the hopper 300.

[0073] like Figure 6 , Figure 7As shown, in some embodiments of this utility model, the conveying assembly includes a lifting mechanism, a distributing mechanism, a collecting assembly, and connecting components. The distributing mechanism includes a sorting component 420, with a diversion surface 421 on its upper part. The diversion surface 421 has diversion channels corresponding to the number of steel ball screening units 100. The lifting mechanism is located at the discharge port 301 and can lift the steel balls output from the discharge port 301 to be level with or higher than the diversion surface 421. The collecting assembly includes... The collecting component 430 is equipped with a collecting trough 431 corresponding to the diversion channel. The connecting component connects the collecting trough 431 to the steel ball screening unit 100. The steel ball output from the discharge port 301 is lifted by the lifting mechanism to be level with or higher than the diversion surface 421. The steel ball rolls down to the diversion surface 421 and is diverted by the diversion channel before falling into the collecting trough 431. Finally, it is output to the gap of the steel ball screening unit 100 through the connecting component, thereby realizing the automatic conveying of steel balls.

[0074] By lifting the steel balls using a lifting mechanism before outputting them, the amount of steel balls output at one time can be roughly controlled, avoiding excessive output of steel balls that could cause blockages, while also meeting the requirements for continuous output.

[0075] Of course, in the specific implementation process, the discharge port 301 can also be directly connected to the steel ball screening unit 100, which can also meet the requirements of continuous feeding.

[0076] like Figure 6 , Figure 7 As shown, in some embodiments of this utility model, the connecting member is a connecting pipe 440, through which the steel ball is transported.

[0077] Specifically, the connecting pipe 440 is a flexible pipe, such as a plastic pipe or a rubber pipe, to facilitate bending and connection of the connecting pipe 440 and to facilitate the layout of the equipment. The inner diameter of the connecting pipe 440 is slightly larger than the outer diameter of the steel ball to facilitate the transport of the steel ball.

[0078] It is understood that in some embodiments of this utility model, the connecting member may also be a groove-shaped conveying channel, such as a U-shaped conveying channel, which will not be described in detail here.

[0079] like Figure 7 As shown, in some embodiments of this utility model, the diversion surface 421 is an inclined surface that slopes downward along the conveying direction of the diversion channel, so that the steel ball can roll down by its own weight.

[0080] like Figure 6 As shown, in some embodiments of this utility model, the diversion surface 421 is provided with multiple diversion ribs 422 extending along the conveying direction of the diversion channel to form a diversion channel.

[0081] Specifically, such as Figure 6As shown, in this embodiment, four steel ball screening units 100 are configured, corresponding to four collection tanks 431 and four diversion channels. Three diversion ribs 422 are configured to cooperate with the two side walls of the diversion surface 421 to form four diversion channels.

[0082] Of course, in the specific implementation process, the diversion rib 422 can be configured according to the specific number of diversions, which will not be described in detail here.

[0083] In some embodiments of this utility model, the connecting pipe 440 is connected to the bottom of the collecting tank 431, and the bottom of the collecting tank 431 has a V-shaped structure so as to collect the steel balls and output them from the connecting pipe 440.

[0084] like Figure 6 , Figure 7 As shown, in some embodiments of this utility model, the lifting mechanism includes a lifting member 411 slidably disposed in the sorting member 420 or the hopper 300 and a lifting drive unit 412 capable of driving the lifting member 411 to move up and down. The upper end of the lifting member 411 is a supporting surface 413 capable of supporting steel balls. The steel balls output through the discharge port 301 fall into the supporting surface 413 and are driven by the lifting drive unit 412 to rise to be level with or higher than the diversion surface 421, thereby transferring the steel balls to the diversion surface 421.

[0085] Specifically, such as Figure 7 As shown, the side of the lifting member 411 away from the hopper 300 is closely attached to the sorting member 420. A stepped structure is formed between the supporting surface 413 and the side wall of the sorting member 420 to facilitate the support of the steel ball. When the supporting surface 413 of the lifting member 411 is level with or higher than the diversion surface 421, the side wall of the sorting member 420 no longer blocks the steel ball, and the steel ball can automatically roll down to the diversion surface 421.

[0086] like Figure 7 As shown, in some embodiments of this utility model, the supporting surface 413 is an inclined surface that slopes downwards along the direction of the hopper 300 toward the collecting assembly, so that the steel ball rolls down more smoothly.

[0087] like Figure 6 , Figure 7 As shown, in some embodiments of this utility model, the lifting drive unit 412 includes a drive motor 414. The output shaft of the drive motor 414 is connected to one end of a crank 415. The other end of the crank 415 is hinged to one end of a connecting rod 416. The other end of the connecting rod 416 is rotatably connected to the lifting member 411. The drive motor 414, crank 415, connecting rod 416 and lifting member 411 form a crank-slider mechanism to realize the lifting drive of the lifting member 411.

[0088] Of course, in the specific implementation process, the lifting drive unit 412 can also be a cylinder, a cam mechanism, etc., which will not be described in detail here.

[0089] Of course, this invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A steel ball screening assembly characterized by, include: At least one steel ball screening unit (100), the steel ball screening unit (100) comprising: Mounting station (110); The roller mechanism includes a roller (121) and a roller rotation drive unit (122) capable of driving the roller (121) to rotate. The two ends of the roller (121) are rotatably connected to a rotating base (123), and the rotating base (123) is connected to the mounting platform (110). A screening benchmark mechanism includes a benchmark plate (131), both ends of which are connected to the mounting platform (110) via a base plate seat (132), and a gap for screening steel balls is formed between the benchmark plate (131) and the roller (121). An adjustment mechanism is provided on the mounting platform (110) and is capable of driving the base plate (132) or the rotating base (123) to move to adjust the width of the gap.

2. The steel ball screening assembly according to claim 1, characterized in that, The reference plate (131) is a knife-edge ruler, and the gap is formed between the cutting edge of the knife-edge ruler and the roller (121).

3. The steel ball screening assembly according to claim 1, characterized in that, The substrate base (132) is slidably disposed on the mounting platform (110). The adjustment mechanism can drive the substrate base (132) to move. The adjustment mechanism is a lead screw mechanism. The lead screw mechanism includes a lead screw (141) rotatably disposed on the mounting platform (110), a slider (142) threadedly engaged with the lead screw (141), and a rotation drive assembly capable of driving the lead screw (141) to rotate. The slider (142) is connected to the substrate base (132).

4. The steel ball screening assembly of claim 3, wherein, The rotation drive assembly is a handwheel (143) or a motor drive assembly.

5. The steel ball screening assembly according to claim 3 or 4, characterized in that, The steel ball screening assembly includes at least two steel ball screening units (100), and the adjustment mechanisms of the at least two steel ball screening units (100) share the same lead screw (141) and the same rotation drive assembly.

6. The steel ball screening assembly according to claim 1, characterized in that, The steel ball screening assembly also includes a workbench (200), and the mounting platform (110) is mounted on the workbench (200) by means of an angle adjustment mechanism, which can adjust the tilt angle of the mounting platform (110) relative to the workbench (200).

7. The steel ball screening assembly according to claim 6, characterized in that, The middle part of the mounting platform (110) is connected to the worktable (200) through a rotating connection mechanism (111). The tilt adjustment mechanism includes a pushing mechanism (112) disposed between one end of the mounting platform (110) and the worktable (200).

8. A steel ball screening system characterized by, include: The steel ball screening assembly as described in any one of claims 1 to 7; A hopper (300) is provided with a discharge port (301); A conveying assembly is used to connect the hopper (300) and the steel ball screening unit (100) to convey the steel balls output from the outlet (301) to the gap.

9. The steel ball screening system according to claim 8, characterized in that, The conveying assembly includes a lifting mechanism, a distribution mechanism, a collection assembly, and a connecting member. The distribution mechanism includes a sorting component (420), the upper part of which is provided with a diversion surface (421). The diversion surface (421) is provided with diversion channels corresponding to the number of steel ball screening units (100). The lifting mechanism is located at the discharge port (301) and can lift the steel balls output from the discharge port (301) to be level with or higher than the diversion surface (421). The collection assembly includes a collection component (430), which is provided with a collection groove (431) corresponding to each diversion channel. The connecting member connects the collection groove (431) to the steel ball screening unit (100).

10. The steel ball screening system according to claim 9, wherein, The connecting component is a connecting pipe (440).

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