Novel vibrating screen

Abstract

The novel vibrating screen comprises a bottom frame, a plurality of springs and a vibrator and further comprises a screening box, a strip-shaped screening net detachably assembled in the screening box and an anti-blocking unit, and the strip-shaped screening net comprises a plurality of screening rods and a plurality of connecting rods; the anti-blocking unit comprises a rolling shaft which is parallel to the connecting rods and can roll in the length direction of the screening box, a driving mechanism used for driving the rolling shaft to roll and a plurality of top discs which are coaxially and detachably assembled on the rolling shaft in the length direction of the rolling shaft, the distance between the top discs is adjustable, and the highest position of each top disc upwards penetrates through the position between every two adjacent screening rods; the top disc is provided with the first notch parts used for avoiding the connecting rods, in the screening process, the driving mechanism drives the rolling shafts to roll, the top disc can eject materials clamped between every two adjacent screening rods upwards, the problem of material clamping is solved, the first notch parts can avoid the connecting rods, and the screening device is suitable for continuous screening.

Description

Technical Field

[0001] This invention relates to the technical field of vibrating screening equipment, specifically to a novel vibrating screen. Background Technology

[0002] Bar screens, also known as bar vibrating screens or heavy-duty bar screens, are a very common and widely used type of vibrating screen. Their core feature is the use of a set of parallel, fixed or movable screening bars as the screen surface at the feed end. The large gaps between the screening bars and the open structure result in a large material flow area, enabling them to process large quantities of material quickly, making them particularly suitable for primary screening or high-volume production lines. Bar screens have relatively low screening accuracy and are mainly used for coarse screening.

[0003] Like other vibrating screens, bar vibrating screens suffer from material clogging and jamming. However, due to the special structure of the screening rods, although this can reduce the problem of material clogging, material jamming still occurs during continuous screening processes, such as in production lines, due to the large amount of material input and long continuous use. Because the screening is automatic, no personnel are present during the screening process, and material clogging and jamming problems cannot be detected and resolved in a timely manner. Therefore, a new type of vibrating screen needs to be designed. Summary of the Invention

[0004] To address the aforementioned technical problems, the purpose of this invention is to overcome the fact that while the special structure of the existing strip vibrating screen can reduce the probability of material blockage, material blockage can still occur when the amount of material input is large and the continuous use time is long.

[0005] To achieve the above objectives, the present invention provides a novel vibrating screen, comprising a base frame, a plurality of springs and a vibrator mounted on the base frame, and further comprising: a screening box mounted on the upper end of the plurality of springs, a strip screening mesh detachably mounted inside the screening box and spaced apart from the bottom of the screening box, and an anti-clogging unit mounted on the side wall of the screening box, wherein the vibrator is mounted on the bottom of the screening box. The strip screening mesh includes several screening rods evenly spaced along the width of the screening box and several connecting rods evenly spaced along the length of the screening box and fixedly connected to the screening rods. The anti-blocking unit includes a rolling shaft parallel to the connecting rods and capable of rolling along the length of the screening box, a drive mechanism for driving the rolling shaft to roll, and several top plates coaxially and detachably mounted on the rolling shaft with adjustable spacing. The highest point of the top plate extends upward through the space between two adjacent screening rods, and the top plate is provided with a first notch for avoiding the connecting rods.

[0006] Preferably, the top plate is provided with a mounting groove that is coaxial with the rolling shaft and communicates with the first notch. The rolling shaft is recessed with a slot that is arranged in the same length direction. A mounting block is detachably mounted on the side wall of the mounting groove. A first mounting bolt with its end lower than the slot is threaded onto the mounting block. The length direction of the first mounting bolt is consistent with the radial direction corresponding to the top plate.

[0007] Preferably, a first strip groove is recessed on each of the pair of sidewalls opposite to the first notch, the length direction of the first strip groove is consistent with the length direction of the first mounting bolt, a second notch is provided at the end of the first strip groove near the axis of the top plate, and a pair of protruding parts are provided on the mounting block that can be respectively inserted into the first strip groove through the second notch.

[0008] Preferably, a pair of side walls of the screening box are fixedly connected with support bars of the same length for supporting the strip screening mesh, and a number of threaded seats are fixedly assembled on the top of the pair of side walls of the screening box. A pressure arm that can press against the side of the strip screening mesh is provided above the support bars, and a second mounting bolt that can abut against the upper surface of the pressure arm is threaded on each threaded seat.

[0009] Preferably, the upper surface of the pressure arm is recessed with a second strip-shaped groove of the same length direction for the lower end of the second mounting bolt to be inserted.

[0010] Preferably, the drive mechanism includes a pair of rolling mechanisms symmetrically mounted on one outer wall of the screening box and a motor mounted on the outer wall of the screening box and connected to the pair of rolling mechanisms via a transmission mechanism. The side wall of the screening box is provided with a first strip-shaped through groove in the same length direction for the end of the rolling shaft to pass through. The rolling mechanism includes a gear fixedly sleeved on the end of the rolling shaft along the same axis, a rack fixedly assembled on the outer wall of the screening box in the same length direction and meshing with the gear, a sliding member slidably assembled on the side wall of the screening box in the same length direction, and a threaded rod arranged parallel to the rack and assembled on the outer wall of the screening box through corresponding first shaft seats at both ends. One end of the threaded rod is connected to the transmission mechanism, and the end of the rolling shaft is mounted on the sliding member through the second bearing. The sliding member is fitted with a threaded sleeve that is threaded onto the threaded rod.

[0011] Preferably, the transmission mechanism includes a transmission shaft mounted on the outer wall of the screening box via a third bearing seat. The transmission shaft is connected to the output shaft of the motor via a chain and a pair of sprockets. Both ends of the transmission shaft are connected to the ends of corresponding threaded rods via a pair of meshing bevel teeth.

[0012] Preferably, a strip guide plate located above the first strip groove is installed on the inner wall of the screening box, the bottom side of the strip guide plate is inclined away from the inner wall of the screening box, and a housing sleeved on the outside of the rolling mechanism is installed on the side wall of the screening box.

[0013] Preferably, the feeding end of the screening box is equipped with a funnel-shaped feeding component, and a limiting plate is installed on the side of the feeding component facing the discharge end of the screening box. Several vertical second strip-shaped through slots are provided through the limiting plate, and several third mounting bolts are installed on the feeding component, which pass through the corresponding second strip-shaped through slots.

[0014] According to the above technical solution, the novel vibrating screen provided by the present invention has the following beneficial technical effects compared with the prior art: Firstly, during the screening process, the drive mechanism drives the rolling shaft to roll, and the top plate can push the material stuck between two adjacent screening bars upwards, solving the problem of material jamming. In addition, the first notch can avoid the connecting rod, so that the top plate will not directly contact the strip screening mesh, which is suitable for continuous screening and solves the problem of material jamming. Secondly, when replacing with different specifications of strip screens, the spacing between two adjacent screening rods is different, but the spacing between several connecting rods still needs to be the same or increase by multiples to match the first notch. The number and position of the top plate on the rolling shaft can be adjusted to adapt to different specifications of strip screens, making it highly practical. Thirdly, this vibrating screen can be applied in multiple fields. For example, in the recycling and reprocessing of foundry clay sand and resin sand, it can screen out sand blocks, cores, and scrap iron. The anti-clogging unit prevents sand blocks, cores, and scrap iron from getting stuck on the bar screen and causing blockage, thus enabling large-scale, continuous screening. This not only ensures screening quality but also improves screening efficiency.

[0015] Other features and advantages of the present invention will be described in detail in the following detailed description section; and all parts not covered in the present invention are the same as or can be implemented using the prior art. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a novel vibrating screen provided by the present invention; Figure 2 This invention provides a novel vibrating screen. Figure 1 Enlarged view of point A in the middle; Figure 3This is a cross-sectional view of a novel vibrating screen provided by the present invention; Figure 4 This is a partial three-dimensional structural diagram of the anti-clogging unit of a novel vibrating screen provided by the present invention. Figure 1 ; Figure 5 This is a partially exploded schematic diagram of the anti-clogging unit of a novel vibrating screen provided by the present invention; Figure 6 This is a three-dimensional structural diagram of an anti-clogging unit for a novel vibrating screen provided by the present invention; Figure 7 This is a partial three-dimensional structural diagram of the anti-clogging unit of a novel vibrating screen provided by the present invention. Figure 2 .

[0017] Explanation of reference numerals in the attached figures 1. Screening box; 2. Strip screen; 3. Screening rod; 4. Connecting rod; 5. Rolling shaft; 6. Top plate; 7. First notch; 8. Mounting groove; 9. Slot; 10. Mounting block; 11. First mounting bolt; 12. First strip groove; 13. Second notch; 14. Protrusion; 15. Support bar; 16. Threaded seat; 17. Pressure arm; 18. Second mounting bolt; 19. Motor; 20. Gear; 21. Rack; 22. Sliding part; 23. Threaded rod; 24. Drive shaft; 25. Strip guide plate; 26. Housing; 27. Feeding part; 28. Limiting plate; 29. ​​Second strip through groove. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "inner," and "outer" in the terminology represent the orientation of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0020] like Figure 1-7 As shown, a novel vibrating screen includes a base frame, several springs and a vibrator mounted on the base frame, and further includes: a screening box 1 mounted on the upper end of the several springs, a strip screening mesh 2 detachably mounted inside the screening box 1 and spaced apart from the bottom of the screening box 1, and an anti-clogging unit mounted on the side wall of the screening box 1. The vibrator is mounted on the bottom of the screening box 1. The strip screening mesh 2 includes several screening rods 3 evenly spaced along the width direction of the screening box 1 and several connecting rods 4 evenly spaced along the length direction of the screening box 1 and fixedly connected to the screening rods 3. The anti-blocking unit includes a rolling shaft 5 parallel to the connecting rods 4 and capable of rolling along the length direction of the screening box 1, a driving mechanism for driving the rolling shaft 5 to roll, and several top plates 6 detachably mounted on the rolling shaft 5 along the length direction of the rolling shaft 5 and with adjustable spacing. The highest point of the top plate 6 passes upward between two adjacent screening rods 3, and the top plate 6 is provided with a first notch 7 for avoiding the connecting rods 4.

[0021] In the above technical solution, the base frame, spring and vibrator are all existing mature technologies and are not shown in the figure. The vibrator generally generates centrifugal force by rotating the eccentric block, which forces the screening box 1 to perform continuous reciprocating or rotating vibration. The material is conveyed to the feeding end of the strip screen 2. The material that does not meet the standard will fall from the two adjacent screening rods 3 to the bottom of the screening box 1, and then be discharged from the other outlet. It can also screen flaky materials, which will also pass downward through the strip screen 2. During the screening process, the drive mechanism drives the rolling shaft 5 to reciprocate, and the top plate 6 can push the material stuck between two adjacent screening rods 3 upwards, solving the problem of material jamming. In addition, the first notch 7 can avoid the connecting rod 4, so that the top plate 6 will not directly contact the strip screening mesh 2, which is suitable for continuous screening. When replacing the strip screen 2 with different specifications, the spacing between two adjacent screening rods 3 is different, but the spacing between several connecting rods 4 still needs to be the same or increase by multiples to match the first notch 7. The number and position of the top plate 6 on the rolling shaft 5 can be adjusted to adapt to different specifications of strip screen 2, making it highly practical.

[0022] This vibrating screen can be applied in multiple fields, such as in the recycling and reprocessing of foundry clay sand and resin sand. It can screen out sand blocks, cores, and scrap iron, while the anti-clogging unit can prevent sand blocks, cores, and scrap iron from getting stuck on the strip screen 2 and causing blockage, thus enabling large-scale and continuous screening. This not only ensures screening quality but also improves screening efficiency.

[0023] In a preferred embodiment of the invention, the top plate 6 is provided with a mounting groove 8 that is coaxial with the rolling shaft 5 and communicates with the first notch 7. The rolling shaft 5 is recessed with a slot 9 that is arranged in the same length direction. A mounting block 10 is detachably mounted on the side wall of the mounting groove 8. A first mounting bolt 11 with its end lower than the slot 9 is threaded onto the mounting block 10. The length direction of the first mounting bolt 11 is consistent with the radial direction corresponding to the top plate 6.

[0024] In the above technical solution, when it is necessary to adjust the position of the top plate 6, loosen the first mounting bolt 11, and the top plate 6 can move and adjust its position on the rolling shaft 5. Then tighten the first mounting bolt 11 to fix the top plate 6 on the rolling shaft 5. When it is necessary to remove or assemble the top plate 6 on the rolling shaft 5, the mounting block 10 needs to be removed from the top plate 6 so that the mounting groove 8 is connected to the first notch 7, and then the top plate 6 can be removed or assembled.

[0025] In a preferred embodiment of the invention, a first strip groove 12 is recessed on each of the pair of sidewalls opposite to the first notch 7. The length direction of the first strip groove 12 is consistent with the length direction of the first mounting bolt 11. A second notch 13 is provided at the end of the first strip groove 12 near the axis of the top plate 6. A pair of protrusions 14 are provided on the mounting block 10, which can be respectively inserted into the first strip groove 12 through the second notch 13.

[0026] In the above technical solution, when it is necessary to disassemble the top plate 6, loosen the first mounting bolt 11 so that the protrusion 14 on the mounting block 10 can move into the second notch 13. The protrusion 114 can be taken out from the first strip groove 12 through the second notch 13, and the mounting block 10 can be removed so that the top plate 6 can be removed from the rolling shaft 5. When the top plate 6 needs to be assembled, after removing the mounting block 10 from the top plate 6, the mounting groove 8 is fitted onto the fixed shaft, and then the protrusion 14 is inserted into the first strip groove 12 through the second notch 13. The first mounting bolt 11 is tightened continuously, and the protrusion 14 will tightly abut against the end of the first strip groove 12 away from the second notch 13, and the end of the first mounting bolt 11 will tightly abut against the slot 9.

[0027] In a preferred embodiment of the invention, a pair of support bars 15 of the same length direction for supporting the bar-shaped screening mesh 2 are fixedly connected to the side walls of the screening box 1. A plurality of threaded seats 16 are fixedly assembled on the top of the pair of side walls of the screening box 1. A pressure arm 17 that can press against the side of the bar-shaped screening mesh 2 is provided above the support bars 15. A second mounting bolt 18 with its lower end abutting against the upper surface of the pressure arm 17 is threadedly assembled on each threaded seat 16.

[0028] In the above technical solution, when it is necessary to replace the strip screen 2, loosen several second mounting bolts 18, remove the pressure arm 17, and the strip screen 2 can be replaced; after placing the other two sides of the strip screen 2 on the support bar 15, place the pressure arm 17 on the strip screen 2, and continuously tighten the second mounting bolts 18 to make it tightly press against the pressure arm 17, so that the pressure arm 17 will press tightly against the side of the strip screen 2.

[0029] In a preferred embodiment of the invention, the upper surface of the pressure arm 17 is recessed with a second strip-shaped groove of the same length direction for the lower end of the second mounting bolt 18 to be inserted.

[0030] In the above technical solution, the second strip groove can prevent the pressure arm 17 from sliding after the second mounting bolt 18 is tightened, thereby improving the assembly stability of the pressure arm 17.

[0031] In a preferred embodiment of the invention, the driving mechanism includes a pair of rolling mechanisms symmetrically mounted on one outer wall of the screening box 1 and a motor 19 mounted on the outer wall of the screening box 1 and connected to the pair of rolling mechanisms via a transmission mechanism. The side wall of the screening box 1 is provided with a first strip-shaped through groove through which the end of the rolling shaft 5 passes. The rolling mechanism includes a gear 20 fixedly sleeved on the end of the rolling shaft 5 along the same axis, a rack 21 fixedly mounted on the outer wall of the screening box 1 along the same length and meshing with the gear 20, a sliding member 22 slidably mounted on the side wall of the screening box 1 along the same length, and a threaded rod 23 arranged parallel to the rack 21 and mounted on the outer wall of the screening box 1 through corresponding first bearings at both ends. One end of the threaded rod 23 is connected to the transmission mechanism, and the end of the rolling shaft 5 is mounted on the sliding member 22 through the second bearing seat. The sliding member 22 is fitted with a threaded sleeve that is threaded onto the threaded rod 23.

[0032] In the above technical solution, the motor 19 starts and drives a pair of rolling mechanisms to start through the transmission mechanism. The threaded rod 23 drives the sliding member 22 to slide through the threaded sleeve. The sliding member 22 drives the rolling shaft 5 to move. Through the cooperation of the gear 20 and the rack 21, the rolling shaft 5 rotates during its movement, thereby causing the rolling shaft 5 to perform rolling motion.

[0033] In a preferred embodiment of the invention, the transmission mechanism includes a transmission shaft 24 mounted on the outer wall of the screening box 1 via a third bearing. The transmission shaft 24 is connected to the output shaft of the motor 19 via a chain and a pair of sprockets. Both ends of the transmission shaft 24 are connected to the ends of the corresponding threaded rods 23 via a pair of meshing bevel teeth.

[0034] In a preferred embodiment of the invention, a strip guide plate 25 located above the first strip groove is fitted on the inner wall of the screening box 1. The bottom side of the strip guide plate 25 is inclined away from the inner wall of the screening box 1. A housing 26 sleeved on the outside of the rolling mechanism is fitted on the side wall of the screening box 1.

[0035] In the above technical solution, the strip guide plate 25 can guide the material close to the first strip channel and prevent the material from falling into the first strip channel.

[0036] In a preferred embodiment of the invention, the feeding end of the screening box 1 is equipped with a funnel-shaped feeding component 27, and a limiting plate 28 is installed on the side of the feeding component 27 facing the discharge end of the screening box 1. A plurality of vertical second strip-shaped through slots 29 are provided through the limiting plate 28, and a plurality of third mounting bolts are installed on the feeding component 27, which respectively pass through the corresponding second strip-shaped through slots 29.

[0037] In the above technical solution, loosening the third mounting bolt can adjust the height of the limiting plate 28, that is, the distance between the limiting plate 28 and the strip screening mesh 2. The limiting plate 28 can intercept the material at the top of the stacked material, so that the material is screened in a single layer, improving the screening effect and avoiding material stacking.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0040] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A novel vibrating screen comprising a chassis, a number of springs and a vibrator mounted on the chassis, characterized in that, Also include: The vibrator is assembled at the bottom of the screening box (1); The strip-shaped screening net (2) comprises a plurality of screening rods (3) arranged at equal intervals along the width direction of the screening box (1) and a plurality of connecting rods (4) arranged at equal intervals along the length direction of the screening box (1) and fixedly connected with the plurality of screening rods (3), and the anti-blocking unit comprises a rolling shaft (5) arranged in parallel with the connecting rod (4) and capable of rolling along the length direction of the screening box (1), a driving mechanism for driving the rolling shaft (5) to roll, and a plurality of top plates (6) detachably assembled on the rolling shaft (5) along the coaxial line of the length direction of the rolling shaft (5) and capable of adjusting the interval, the highest part of the top plate (6) passes between the adjacent two screening rods (3) upwardly, and the top plate (6) is provided with a first notch portion (7) for avoiding the connecting rod (4).

2. A novel vibrating screen as claimed in claim 1, wherein, The top plate (6) is provided with a mounting groove (8) arranged coaxially with the rolling shaft (5) and communicating with the first notch portion (7), the rolling shaft (5) is recessed and provided with a clamping groove (9) arranged in the length direction, the side wall of the mounting groove (8) is detachably provided with a mounting block (10), the mounting block (10) is threadedly provided with a first mounting bolt (11) with a lower end capable of being inserted into the clamping groove (9), and the length direction of the first mounting bolt (11) is consistent with the radial direction corresponding to the top plate (6).

3. A novel vibrating screen as claimed in claim 2, wherein, The opposite pair of side walls of the first notch portion (7) are recessed and provided with a first strip-shaped groove (12), the length direction of the first strip-shaped groove (12) is consistent with the length direction of the first mounting bolt (11), the end of the first strip-shaped groove (12) close to the axis of the top plate (6) is provided with a second notch portion (13), and the mounting block (10) is protrusively provided with a pair of protruding block portions (14) capable of being clamped into the first strip-shaped groove (12) through the second notch portion (13) respectively.

4. A novel vibrating screen as claimed in claim 1, wherein, A support bar (15) for supporting the strip-shaped screening net (2) is fixedly connected to each of the pair of side walls of the screening box (1) in the length direction, a plurality of threaded seats (16) are fixedly assembled to the top of each of the pair of side walls of the screening box (1), a pressing arm (17) capable of being pressed on the side edge of the strip-shaped screening net (2) is arranged above each of the support bars (15), and a second mounting bolt (18) with a lower end capable of abutting against the upper surface of the pressing arm (17) is threadedly assembled to each of the threaded seats (16).

5. A novel vibrating screen as claimed in claim 4, wherein, The upper surface of the pressing arm (17) is recessed and provided with a second strip-shaped groove in the length direction for inserting the lower end of the second mounting bolt (18).

6. A new vibrating screen as claimed in claim 1, wherein, The driving mechanism comprises a pair of rolling mechanisms assembled in a symmetrical state on the pair of outer walls of the screening box (1) and a motor (19) assembled on the outer wall of the screening box (1) and in transmission connection with the pair of rolling mechanisms through a transmission mechanism. The side wall of the screening box (1) is provided with a first strip-shaped through slot penetrating in the length direction, and the end of a rolling shaft (5) passes through the first strip-shaped through slot; the rolling mechanism comprises a gear (20) fixed coaxially on the end of the rolling shaft (5), a rack (21) fixedly assembled on the outer wall of the screening box (1) in the length direction and engaged with the gear (20), a sliding piece (22) slidingly assembled on the side wall of the screening box (1), and a threaded rod (23) provided in parallel with the rack (21) and assembled on the outer wall of the screening box (1) through corresponding first shaft seats at both ends. One end of the threaded rod (23) is drivingly connected with the transmission mechanism, the end of the rolling shaft (5) is assembled on the sliding piece (22) through a second shaft seat, and the sliding piece (22) is provided with a threaded sleeve assembled on the threaded rod (23) in a threaded manner.

7. A novel vibrating screen as claimed in claim 6, wherein, The transmission mechanism comprises a transmission shaft (24) assembled on the outer wall of the screening box (1) through a third shaft seat, the transmission shaft (24) is drivingly connected with the output shaft of the motor (19) through a chain and a pair of chain wheels, and both ends of the transmission shaft (24) are drivingly connected with the ends of the corresponding threaded rods (23) through a pair of meshing bevel gears.

8. A novel vibrating screen as claimed in claim 6, wherein, The inner wall of the screening box (1) is provided with a strip-shaped guide plate (25) located above the first strip-shaped through slot, the bottom side of the strip-shaped guide plate (25) is inclined away from the inner wall of the screening box (1), and the side wall of the screening box (1) is provided with a housing (26) sleeved on the outer side of the rolling mechanism.

9. A new vibrating screen as claimed in claim 1, characterized in that, The feeding end of the screening box (1) is provided with a funnel-shaped feeding piece (27), the side of the feeding piece (27) facing the discharging end of the screening box (1) is provided with a limiting plate (28), a plurality of vertical second strip-shaped through slots (29) are penetratingly arranged on the limiting plate (28), and a plurality of third mounting bolts respectively passing through the corresponding second strip-shaped through slots (29) are arranged on the feeding piece (27).

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