A screening device for wear-resistant alloy steel balls

Abstract

The present invention relates to the technical field of steel ball screening, and specifically to a screening device for wear-resistant alloy steel balls, comprising a support leg, the top of the support leg is fixedly connected to an external fixed plate, both sides of the external fixed plate are fixedly connected to external fixed rails, the inner side of each of the external fixed rails is provided with an internal fixed rail, the outer sides of the external fixed rails and the internal fixed rails are commonly connected to a side fixed plate, and the tops of the external fixed rails and the internal fixed rails are both provided with openings. The present invention adjusts the spacing between the upper and lower movable rails by setting a spacing adjustment mechanism, and when the spacing between the upper and lower movable rails becomes smaller, when the upper connecting shaft and the lower connecting shaft slide through the section, the spacing between the upper connecting shaft and the lower connecting shaft becomes smaller, the setting of the window and the scale bar facilitates the observation of the spacing between adjacent partition structures, and the setting of multiple spacing adjustment mechanisms can be adjusted to different spacing sizes as needed, thereby achieving the function of flexibly adjusting the screening size.

Description

Technical Field

[0001] The invention relates to the technical field of steel ball screening, in particular to a screening device for wear-resistant alloy steel balls. Background Art

[0002] Wear-resistant alloy steel ball is a sphere. There are many types of wear-resistant alloy steel balls on the market. When producing wear-resistant alloy steel balls, it is necessary to screen wear-resistant alloy steel balls of different sizes. The screening operation requires manual screening or machine screening. Manual screening efficiency is low. When mechanical screening is performed, in the prior art, a large number of steel balls are generally screened through a vibrating screen, but it cannot be finely adjusted according to actual needs. Different screens can only be replaced to screen steel balls of different sizes, which is inconvenient to use. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention proposes a screening device for wear-resistant alloy steel balls.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A screening device for wear-resistant alloy steel balls comprises a supporting leg, wherein the top of the supporting leg is fixedly connected to an external fixing plate, both sides of the external fixing plate are fixedly connected to external fixing rails, the inner side of each of the external fixing rails is provided with an inner fixing rail, the outer sides of the external fixing rails and the inner fixing rails are commonly connected with a side fixing plate, the tops of the external fixing rails and the inner fixing rails are both provided with openings, the inner sides of the openings are provided with a plurality of horizontally arranged movable rails, the ends of the movable rails are hinged with connecting rails, the plurality of movable rails are connected end to end through the arranged connecting rails to form a variable rail, the variable rail is hinged to the two ends of the openings on the external fixing rail and the inner fixing rail through the arranged connecting rails, and a plurality of uniformly arranged rails along the external fixing rail and the variable rail are arranged between the two side fixing plates. A distributed partition structure, both ends of the partition structure are hinged with connecting rods, and an upper connecting shaft and a lower connecting shaft are hinged between two adjacent partition structures through the arranged connecting rods, the upper connecting shaft is slidably connected to the inner wall of the outer fixed track, and the lower connecting shaft is slidably connected to the inner wall of the inner fixed track, and a spacing adjustment mechanism is installed on the side of the movable track away from the partition structure, and the spacing adjustment mechanism is used to adjust the spacing between the movable track on the outer fixed track and the movable track on the inner fixed track on the same side, a material guide chute is provided at the bottom of the movable track, and the material guide chute is fixedly connected to the inner side of the inner fixed track, an inner fixed plate is fixedly connected between the two inner fixed rails, and a conveyor belt for pushing the partition structure to move along the outer fixed track and the outer fixed plate is installed on the inner side of the inner fixed plate.

[0006] Preferably: the spacing adjustment mechanism includes a mounting plate, the inner side of the mounting plate is rotatably connected with a vertically arranged bidirectional screw, the bidirectional screw is threadedly connected with two symmetrically distributed movable blocks, sliding rods are provided on both sides of the bidirectional screw, two ends of the sliding rod are fixedly connected to the mounting plate, the sliding rod passes through the two movable blocks, and the sliding rod is slidably connected to the two movable blocks, the two movable blocks are respectively fixedly connected to the movable track on the outer fixed track and the movable track on the inner fixed track, the outer wall of the bidirectional screw is fixedly connected with a first bevel gear, the inner side of the mounting plate is rotatably connected with a second bevel gear meshing with the first bevel gear, and the output shaft of the second bevel gear passes through the mounting plate and is fixedly connected with a knob.

[0007] Preferably: a horizontally arranged window is provided in the middle of the mounting plate, a scale bar is provided on the outer side of the mounting plate near the window, a fixing bar is fixedly connected to the outside of the side fixing plate, and the fixing bar is fixedly connected to the mounting plate by screws.

[0008] Preferably, the connecting track comprises an outer sliding sleeve and an inner sliding sleeve, the inner parts of the outer sliding sleeve and the movable track are provided with sliding grooves for the upper connecting shaft and the lower connecting shaft to slide, and the end surface of the outer sliding sleeve is provided with a receiving groove for the inner sliding sleeve to slide.

[0009] Preferably: the partition structure includes two movable rods, both ends of each movable rod are rotatably connected to two connecting rods, a plurality of connecting ropes are movably connected between the two movable rods, an elliptical tube is provided on one side of the two movable rods close to the external fixed track, a connecting plate is fixedly connected to the middle part of the connecting rope, and an end of the connecting plate is fixedly connected to the outer wall of the elliptical tube.

[0010] Preferably: a receiving groove is provided inside each movable rod, a spring is fixedly connected to the inner wall of the receiving groove, both ends of the connecting rope are fixedly connected to a baffle slidably connected to the inner wall of the receiving groove, and one end of the spring is fixedly connected to the end of the baffle.

[0011] Preferably, two symmetrically distributed arc-shaped spring sheets are fixedly connected between the two movable rods, and the openings of the arc-shaped spring sheets face the movable rods.

[0012] Preferably, the outer wall of the conveyor belt is fixedly connected with a plurality of evenly distributed push plates.

[0013] Compared with the existing technology, the present invention has the following beneficial effects:

[0014] 1. Through the spacing adjustment mechanism, when adjusting, the knob is turned to drive the second bevel gear to rotate through the knob, and the second bevel gear drives the first bevel gear fixedly connected to the bidirectional screw to rotate. The rotation directions of the two threads on the bidirectional screw are opposite, which will cause the two movable blocks to move in different directions when the bidirectional screw rotates, and at the same time approach or move away from the middle of the bidirectional screw. The movable block is fixedly connected to the movable track, that is, the spacing between the upper and lower movable tracks changes. When the spacing between the upper and lower movable tracks becomes smaller, when the upper connecting shaft and the lower connecting shaft slide through the section, the spacing between the upper connecting shaft and the lower connecting shaft becomes smaller. The setting of the window and the scale bar facilitates the observation of the spacing between adjacent partition structures. The setting of multiple spacing adjustment mechanisms can be adjusted to different spacing sizes as needed, thereby realizing the function of flexibly adjusting the screening size;

[0015] 2. Through the variable track, the upper and lower movable tracks at the variable track have different spacings. When the spacing becomes smaller, when the upper connecting shaft and the lower connecting shaft slide through the section, the spacing between the upper connecting shaft and the lower connecting shaft becomes smaller. Under the traction of the connecting rod, the spacing between the two adjacent partition structures will increase, so that the balls with a diameter greater than the spacing will fall down, fall into the inside of the guide chute and be discharged from the side of the device. The adjacent partition structures drive the steel balls to pass through the movable tracks with different upper and lower spacings in turn. When the upper connecting shaft and the lower connecting shaft slide through the movable track in turn, the spacing between the adjacent partition structures changes in turn according to the adjustment, and the steel balls of different diameters fall down in turn and slide down from different guide chute, so as to realize the convenient screening of large quantities of steel balls, and the size of the steel ball screening can be flexibly adjusted, which is very convenient to adjust;

[0016] 3. Through the setting of the partition structure, the partition structure is composed of two movable rods and connected together by multiple flexible connecting ropes. The setting of the baffle, arc-shaped spring and spring is used to keep the connecting rope in a taut state. When the distance between adjacent partition structures changes, the distance between the two movable rods inside the partition structure will change accordingly to prevent the distance between other adjacent partition structures from being affected, resulting in inaccurate screening problems. The setting of the elliptical tube will cause the steel ball to roll to both sides when it falls on the elliptical tube, which can prevent the steel ball from falling between the two movable rods and being unable to be screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the present invention in another direction;

[0019] Figure 3 The present invention Figure 1 A schematic diagram of the structure enlargement at the center A;

[0020] Figure 4It is a structural cross-sectional view of the present invention;

[0021] Figure 5 The present invention Figure 4 A schematic diagram of the structure enlarged at B in the middle;

[0022] Figure 6 is a schematic diagram of the connection relationship of the partition structure of the present invention;

[0023] Figure 7 The present invention Figure 6 A schematic diagram of the structure enlarged at C in the middle;

[0024] Figure 8 The present invention Figure 6 A schematic diagram of the structure at D in the middle is enlarged;

[0025] Fig. 9 It is a schematic cross-sectional view of the structure of the variable track of the present invention;

[0026] Fig.10 It is a structural enlarged schematic diagram of the spacing adjustment mechanism of the present invention;

[0027] Fig.11 is a schematic diagram of the position distribution of the partition structure of the present invention;

[0028] Fig.12 is a partial cross-sectional schematic diagram of the movable rod of the present invention;

[0029] Fig.13 It is an enlarged schematic diagram of the structure of the outer sliding sleeve and the inner sliding sleeve of the present invention.

[0030] In the figure: 1. supporting leg; 2. outer fixed track; 3. outer fixed plate; 4. inner fixed track; 5. side fixed plate; 6. spacing adjustment mechanism; 7. partition structure; 8. connecting rod; 9. upper connecting shaft; 10. lower connecting shaft; 11. movable track; 12. connecting track; 13. mounting plate; 14. bidirectional screw; 15. movable block; 16. first bevel gear; 17. second bevel gear; 18. knob; 19. slide bar; 20. window; 21. scale bar; 22. fixing bar; 23. outer sliding sleeve; 24. inner sliding sleeve; 25. movable rod; 26. connecting rope; 27. arc spring piece; 28. connecting piece; 29. ​​elliptical tube; 30. receiving groove; 31. spring; 32. material guide chute; 33. inner fixed plate; 34. conveyor belt; 35. push plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] Reference Figure 1 - Fig.12 A screening device for wear-resistant alloy steel balls comprises a support leg 1, an outer fixing plate 3 is fixedly connected to the top of the support leg 1, outer fixing rails 2 are fixedly connected to both sides of the outer fixing plate 3, inner fixing rails 4 are arranged on the inner side of each outer fixing rail 2, side fixing plates 5 are commonly connected to the outer sides of the outer fixing rails 2 and the inner fixing rails 4, and openings are provided on the tops of the outer fixing rails 2 and the inner fixing rails 4. Figure 1As shown, the openings of the outer fixed rail 2 and the outer fixed plate 3 are opened on one side of the top, and the openings occupy two-thirds of the top. The area at the opening is the screening area, and the top area outside the opening is the feeding area. A guide chute 32 is arranged below the feeding area for discharging steel balls that are too small. A plurality of horizontally arranged movable rails 11 are arranged on the inner side of the openings, and a connecting rail 12 is hinged at the end of the movable rail 11. The plurality of movable rails 11 are connected end to end through the arranged connecting rail 12 to form a variable rail. The variable rail is hinged to the two ends of the openings on the outer fixed rail 2 and the inner fixed rail 4 through the arranged connecting rail 12. The outer fixed rail 2 and the variable rail are connected together to form a closed rail, and the outer fixed plate 3 and the variable rail are connected together to form a closed rail. A plurality of partition structures 7 evenly distributed along the outer fixed rail 2 and the variable rail are arranged between the two side fixed plates 5. Connecting rods 8 are hinged at both ends of the partition structure 7, and the connecting rods 8 are arranged between two adjacent partition structures 7. An upper connecting shaft 9 and a lower connecting shaft 10 are hinged, the upper connecting shaft 9 is slidably connected to the inner wall of the outer fixed rail 2, and the lower connecting shaft 10 is slidably connected to the inner wall of the inner fixed rail 4. A spacing adjustment mechanism 6 is installed on the side of the movable rail 11 away from the partition structure 7. The spacing adjustment mechanism 6 is used to adjust the spacing between the movable rail 11 on the outer fixed rail 2 on the same side and the movable rail 11 on the inner fixed rail 4. A material guide chute 32 is provided at the bottom of the movable rail 11, and the material guide chute 32 is fixedly connected to the inner side of the inner fixed rail 4. An inner fixed plate 33 is fixedly connected between the two inner fixed rails 4. A conveyor belt 34 for pushing the partition structure 7 to move along the outer fixed rail 2 and the outer fixed plate 3 is installed on the inner side of the inner fixed plate 33. A plurality of evenly distributed push plates 35 are fixedly connected to the outer wall of the conveyor belt 34. The conveyor belt 34 is driven by a motor and rotates through the conveyor belt 34. The push plate 35 on the outer side of the conveyor belt 34 moves the partition structure 7, so that the partition structure 7 slides along the outer fixed rail 2 and the outer fixed plate 3 as a whole.

[0034] In this embodiment, the spacing adjustment mechanism 6 includes a mounting plate 13, the inner side of the mounting plate 13 is rotatably connected with a vertically arranged bidirectional screw 14, the bidirectional screw 14 is threadedly connected with two symmetrically distributed movable blocks 15, and both sides of the bidirectional screw 14 are provided with a slide bar 19, both ends of the slide bar 19 are fixedly connected to the mounting plate 13, the slide bar 19 passes through the two movable blocks 15, and the slide bar 19 is slidably connected to the two movable blocks 15, and the two movable blocks 15 are respectively connected to the movable track 11 on the outer fixed track 2 and the movable track on the inner fixed track 4. 11 is fixedly connected, the outer wall of the bidirectional screw 14 is fixedly connected with a first bevel gear 16, the inner side of the mounting plate 13 is rotatably connected with a second bevel gear 17 meshing with the first bevel gear 16, the output shaft of the second bevel gear 17 passes through the mounting plate 13 and is fixedly connected with a knob 18, a horizontally arranged window 20 is provided in the middle of the mounting plate 13, a scale bar 21 is provided on the outer side of the mounting plate 13 near the window 20, and a fixing bar 22 is fixedly connected to the outside of the side fixing plate 5, and the fixing bar 22 is fixedly connected to the mounting plate 13 by set screws.

[0035] Specifically, when adjusting, the knob 18 is turned to drive the second bevel gear 17 to rotate through the knob 18, and the second bevel gear 17 drives the first bevel gear 16 fixedly connected to the bidirectional screw 14 to rotate, and the rotation directions of the two threads on the bidirectional screw 14 are opposite, which will cause the two movable blocks 15 to move in different directions when the bidirectional screw 14 rotates, and at the same time approach or move away from the middle of the bidirectional screw 14, and the movable block 15 is fixedly connected to the movable track 11, that is, the spacing between the upper and lower movable tracks 11 changes. When the spacing between the upper and lower movable tracks 11 becomes smaller, when the upper connecting shaft 9 and the lower connecting shaft 10 slide through this section, the spacing between the upper connecting shaft 9 and the lower connecting shaft 10 becomes smaller. The setting of the window 20 and the scale bar 21 is convenient for observing the spacing between adjacent partition structures 7. The setting of multiple spacing adjustment mechanisms 6 can be adjusted to different spacing sizes as needed, thereby realizing the function of flexibly adjusting the screening size, and the steel ball is placed in the feeding area , clamped by adjacent partition structures 7, the steel balls are driven by the conveyor belt 34 to move toward the variable track. The upper and lower movable tracks 11 at the variable track have different spacings. When the spacing becomes smaller, when the upper connecting shaft 9 and the lower connecting shaft 10 slide through this section, the spacing between the upper connecting shaft 9 and the lower connecting shaft 10 becomes smaller. Under the traction of the connecting rod 8, the spacing between the two adjacent partition structures 7 will increase, so that the balls with a diameter greater than the spacing will fall down and fall into the inside of the guide chute 32 and be discharged from the side of the device. The adjacent partition structures 7 drive the steel balls to pass through the movable tracks 11 with different upper and lower spacings in turn. When the upper connecting shaft 9 and the lower connecting shaft 10 slide through the movable track 11 in turn, the spacing between the adjacent partition structures 7 changes in turn according to the adjustment, and steel balls of different diameters fall down in turn and slide down from different guide chute 32, so as to realize convenient screening of large quantities of steel balls, and the size of the steel ball screening can be flexibly adjusted, which is very convenient to adjust.

[0036] In this embodiment, the connecting rail 12 includes an outer sleeve 23 and an inner sleeve 24. The outer sleeve 23 and the movable rail 11 are both provided with sliding grooves for the upper connecting shaft 9 and the lower connecting shaft 10 to slide. The end surface of the outer sleeve 23 is provided with a receiving groove for the inner sleeve 24 to slide. When adjusting the distance between the upper and lower movable rails 11, the connecting rail 12 can be adaptively extended and shortened according to the position change of the movable rail 11, and connect the two adjacent movable rails 11.

[0037] In this embodiment, the partition structure 7 includes two movable rods 25, each of which has two ends rotatably connected to two connecting rods 8, and a plurality of connecting ropes 26 movably connected between the two movable rods 25. An elliptical tube 29 is provided on one side of the two movable rods 25 close to the external fixed rail 2, and a connecting plate 28 is fixedly connected to the middle of the connecting rope 26, and an end of the connecting plate 28 is fixedly connected to the outer wall of the elliptical tube 29. A receiving groove 30 is provided inside each movable rod 25, and a spring 31 is fixedly connected to the inner wall of the receiving groove 30. Both ends of the connecting rope 26 are fixedly connected to a baffle slidably connected to the inner wall of the receiving groove 30, and one end of the spring 31 is fixedly connected to the end of the baffle. Two symmetrically distributed arc-shaped spring sheets 27 are fixedly connected between the two movable rods 25, and the opening of the arc-shaped spring sheet 27 faces the movable rod 25.

[0038] Specifically, in order to avoid affecting the spacing of other partition structures 7 when adjusting the spacing between adjacent partition structures 7, the partition structure 7 is composed of two movable rods 25 and connected together by multiple flexible connecting ropes 26. The baffle, arc-shaped spring plate 27 and spring 31 are provided to keep the connecting rope 26 in a taut state. When the spacing between adjacent partition structures 7 changes, the spacing between the two movable rods 25 inside the partition structure 7 will change accordingly to prevent the spacing between other adjacent partition structures 7 from being affected, resulting in inaccurate screening. The elliptical tube 29 is provided so that the steel ball will roll to both sides when it falls on the elliptical tube 29, which can prevent the steel ball from falling between the two movable rods 25 and being unable to be screened.

[0039] Working principle: When in use, first adjust the spacing between adjacent partition structures 7 according to the size of the steel balls to be screened, and rotate the conveyor belt 34. The push plate 35 on the outside of the conveyor belt 34 moves the partition structure 7, so that the partition structure 7 slides along the outer fixed track 2 and the outer fixed plate 3 as a whole, and the wear-resistant steel balls are placed in the loading area and clamped by the adjacent partition structures 7. The steel balls are arranged in a single layer and driven by the conveyor belt 34 to move toward the variable track. The spacing between the upper and lower movable tracks 11 at the variable track is different. When the spacing becomes smaller, when the upper connecting shaft 9 and the lower connecting shaft 10 slide through this section, the spacing between the upper connecting shaft 9 and the lower connecting shaft 10 Becomes smaller, and under the traction of the connecting rod 8, the distance between the two adjacent partition structures 7 will increase, so that the balls with a diameter larger than the distance will fall down, fall into the inside of the guide chute 32 and be discharged from the side of the device, and the adjacent partition structures 7 drive the steel balls to pass through the movable tracks 11 with different upper and lower distances in turn. When the upper connecting shaft 9 and the lower connecting shaft 10 slide over the movable track 11 in turn, the distance between the adjacent partition structures 7 changes in turn according to the adjustment, and the steel balls of different diameters fall down in turn and slide down from different guide chutes 32, so as to realize the convenient screening of large quantities of steel balls, and the size of the steel ball screening can be flexibly adjusted, and the adjustment is very convenient.

[0040] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screening device for wear-resistant alloy steel balls, comprising a support leg (1), the top of the support leg (1) being fixedly connected to an external fixing plate (3), characterized in that: Both sides of the outer fixing plate (3) are fixedly connected to the outer fixing rails (2), the inner side of each of the outer fixing rails (2) is provided with an inner fixing rail (4), the outer sides of the outer fixing rails (2) and the inner fixing rails (4) are connected to the side fixing plates (5), the tops of the outer fixing rails (2) and the inner fixing rails (4) are provided with openings, the inner sides of the openings are provided with a plurality of horizontally arranged movable rails (11), the ends of the movable rails (11) are hinged with connecting rails (12), the plurality of movable rails (11) are connected end to end through the arranged connecting rails (12) to form a variable rail, the variable rail is hinged to the two ends of the openings on the outer fixing rails (2) and the inner fixing rails (4) through the arranged connecting rails (12), a plurality of partition structures (7) evenly distributed along the outer fixing rails (2) and the variable rails are provided between the two side fixing plates (5), the two ends of the partition structures (7) are hinged with connecting rods (8), and the two adjacent partition structures (7) are connected to the outer fixing rails (2) and the variable rails. An upper connecting shaft (9) and a lower connecting shaft (10) are hingedly connected between the partition structures (7) through a connecting rod (8), the upper connecting shaft (9) is slidably connected to the inner wall of the outer fixed track (2), and the lower connecting shaft (10) is slidably connected to the inner wall of the inner fixed track (4), and a spacing adjustment mechanism (6) is installed on the side of the movable track (11) away from the partition structure (7), and the spacing adjustment mechanism (6) is used to adjust the spacing between the movable track (11) on the outer fixed track (2) and the movable track (11) on the inner fixed track (4) on the same side, and a material guide chute (32) is arranged at the bottom of the movable track (11), and the material guide chute (32) is fixedly connected to the inner side of the inner fixed track (4), and an inner fixed plate (33) is fixedly connected between the two inner fixed tracks (4), and a conveyor belt (34) is installed on the inner side of the inner fixed plate (33) for pushing the partition structure (7) to move along the outer fixed track (2) and the outer fixed plate (3); The spacing adjustment mechanism (6) comprises a mounting plate (13), the inner side of which is rotatably connected to a vertically arranged bidirectional screw (14), the bidirectional screw (14) being threadedly connected to two symmetrically distributed movable blocks (15), both sides of which are provided with sliding rods (19), the two ends of which are fixedly connected to the mounting plate (13), the sliding rod (19) passing through the two movable blocks (15), and the sliding rod (19) being slidably connected to the two movable blocks (15), the two movable blocks (15) being respectively fixedly connected to the movable track (11) on the outer fixed track (2) and the movable track (11) on the inner fixed track (4), the outer wall of the bidirectional screw (14) being fixedly connected to a first bevel gear (16), the inner side of the mounting plate (13) being rotatably connected to a second bevel gear (17) meshing with the first bevel gear (16), the output shaft of the second bevel gear (17) passing through the mounting plate (13) and being fixedly connected to a knob (18); The partition structure (7) comprises two movable rods (25), both ends of each movable rod (25) are rotatably connected to two connecting rods (8), a plurality of connecting ropes (26) are movably connected between the two movable rods (25), an elliptical tube (29) is provided on one side of the two movable rods (25) close to the external fixed track (2), a connecting piece (28) is fixedly connected to the middle of the connecting rope (26), and an end of the connecting piece (28) is fixedly connected to the outer wall of the elliptical tube (29).

2. The wear-resistant alloy steel ball screening device according to claim 1, characterized in that: A horizontally arranged viewing window (20) is provided in the middle of the mounting plate (13), a scale bar (21) is provided on the outer side of the mounting plate (13) close to the viewing window (20), and a fixing bar (22) is fixedly connected to the outside of the side fixing plate (5), and the fixing bar (22) is fixedly connected to the mounting plate (13) by means of screws.

3. The wear-resistant alloy steel ball screening device according to claim 1, characterized in that: The connecting track (12) comprises an outer sliding sleeve (23) and an inner sliding sleeve (24); the outer sliding sleeve (23) and the movable track (11) are provided with sliding grooves for the upper connecting shaft (9) and the lower connecting shaft (10) to slide; and the end surface of the outer sliding sleeve (23) is provided with a receiving groove for the inner sliding sleeve (24) to slide.

4. The wear-resistant alloy steel ball screening device according to claim 1, characterized in that: Each movable rod (25) is provided with a receiving groove (30) inside, and a spring (31) is fixedly connected to the inner wall of the receiving groove (30), and both ends of the connecting rope (26) are fixedly connected to a blocking piece slidably connected to the inner wall of the receiving groove (30), and one end of the spring (31) is fixedly connected to the end of the blocking piece.

5. The wear-resistant alloy steel ball screening device according to claim 1, characterized in that: Two symmetrically distributed arc-shaped spring sheets (27) are fixedly connected between the two movable rods (25), and the openings of the arc-shaped spring sheets (27) face the movable rods (25).

6. The wear-resistant alloy steel ball screening device according to claim 1, characterized in that: The outer wall of the conveyor belt (34) is fixedly connected to a plurality of evenly distributed push plates (35).

Images