Pre-screening device of limestone crusher

Abstract

The utility model belongs to the technical field of screening devices, and particularly relates to a pre-screening device of a limestone crusher, which comprises a frame, a shaking screening mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, the shaking screening mechanism comprises a turntable, a vertical rod, a primary screening box, a secondary screening box, an inclined rod and a roller, the rapid clamping mechanism comprises a clamping pipe, a clamping rod, a rotating sleeve, a stabilizing spring, a limiting plate, a lateral rod, a locking rod and a clamping groove, the clamping auxiliary mechanism comprises a bottom plate, a supporting bearing, an adjusting pipe, an annular gear strip, a rotating gear and a lateral annular plate, and the whole screening mechanism is allowed to rotate through combination of a rotating disc and a vertical rod; the rotary motion is beneficial to uniform distribution and effective screening of the materials, the rapid clamping mechanism enables the equipment to be rapidly disassembled and reassembled when the equipment needs to be maintained or adjusted, the downtime is greatly shortened, and the use efficiency of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening devices, and in particular relates to a pre-screening device for a limestone crusher. Background Art

[0002] A limestone crusher pre-screening device is a device specifically designed to perform preliminary screening of limestone before it enters the crusher, improving crushing efficiency and reducing machine load. This device is typically installed at the front end of the limestone crushing process to remove oversized unbroken pieces and other materials that could interfere with the crushing process.

[0003] In the existing technology, firstly, some devices are unable to effectively rotate and shake the materials for screening, resulting in low screening efficiency and inability to effectively separate stones of different particle sizes, affecting the quality of the final product. Large amounts of stones cannot be processed, which will affect production efficiency, especially in industrial applications that require large-scale production. Secondly, when some devices need maintenance or replacement of parts, the entire process will become complicated and time-consuming, which not only increases labor costs, but may also cause the machine to be shut down for a long time. In daily operations, operators face more difficulties in assembling and disassembling machine parts, increasing the tediousness of operation and the risk of errors. Finally, the clamping position of some device connections is inaccurate, affecting the stability and efficiency of the entire machine. The equipment will produce additional wear due to inaccurate component positioning during long-term operation, reducing the stability and service life of the equipment.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a limestone crusher pre-screening device to solve the technical problems mentioned in the background art, such as the inability of the device to effectively rotate and shake the material for screening, and the overly cumbersome maintenance or replacement of parts.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The cam is mounted on a top of the frame, and the roller is mounted on the bottom end of the secondary screening box. The roller and the cam are connected in a guided rolling manner. The quick clamping mechanism comprises a clamping tube, a clamping rod, a rotating sleeve, a stabilizing spring, a limiting plate, a lateral rod, a locking rod and a clamping slot. The clamping rod can extend into the interior of the clamping tube and compress the stabilizing spring at the top end of the internal surface of the clamping tube. The rotating sleeve is rotatably mounted on the side wall of the clamping tube. The locking rod is threadedly connected to the inner wall of the rotating sleeve. The lateral rods on both sides of the locking rod are directionally arranged on the side walls of the clamping tube. The clamping slot is arranged on the side of the clamping rod. The limiting plate is mounted on the side of the clamping rod, and one end face of the limiting plate is in contact with the end face of the clamping tube.

[0008] Preferably, the clamping auxiliary mechanism includes a bottom plate, a support bearing, an adjustment tube, an annular gear bar, a rotating gear and a lateral ring plate. The bottom plate is installed on the side bottom end of the clamping tube, the support bearing is installed on the top end face of the bottom plate, and the adjustment tube is matched with the support bearing, the annular gear bar is installed on the top end face of the adjustment tube, the lateral ring plate is installed on the top of the annular gear bar, and the side face of the rotating gear is in contact with the lateral annular plate, the rotating gear is matched with the rotating sleeve, and the rotating gear and the annular gear bar are meshed and connected. The adjustment tube can rotate in the support bearing, and the design of the annular gear bar and the rotating gear allows the clamping of the fine adjustment device, thereby enhancing the flexibility and adaptability of the device.

[0009] Preferably, a drive motor is provided at the bottom of the frame, and a transmission assembly is provided at the output end of the drive motor. The configuration of the drive motor and the transmission assembly ensures the stable and continuous rotation of the turntable, provides the required power support, and ensures the continuity and efficiency of the screening process.

[0010] Preferably, a rotating shaft is provided on the transmission assembly, and the rotating shaft is connected to the center of the turntable. The provision of the rotating shaft facilitates the transmission of the driving motor power.

[0011] Preferably, the sides of the primary screening box and the secondary screening box are provided with diverter buckets, and the outlets of the diverter buckets are led to the collection device. The primary screening box performs preliminary screening on larger particles, while smaller particles fall through the through slot into the secondary screening box below for more detailed screening.

[0012] Preferably, the bottom end surface of the first-level screening box is provided with through slots, and multiple groups of through slots are directly opposite to the second-level screening box. The provision of the through slots facilitates the implementation of the screening operation.

[0013] Preferably, a first connecting rod is movably provided on the side of the secondary screening box, a second connecting rod is movably provided on the vertical rod, and the clamping rod is fixedly connected to the second connecting rod, and the clamping tube is fixedly connected to the first connecting rod. The arrangement of the first connecting rod and the second connecting rod facilitates the quick installation and disassembly of the driving device and the screening device by the quick clamping mechanism.

[0014] Preferably, a guide groove is provided on the side of the clamping rod, and a guide block is provided on the inner wall of the clamping tube. The provision of the guide block facilitates the clamping rod to extend into the clamping tube in a directional manner.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The utility model is provided with a shaking screening mechanism. The combination of the turntable and the vertical rod allows the entire screening mechanism to rotate. This rotational motion helps to evenly distribute the material and effectively screen it, ensuring that the size classification of the limestone is more accurate. The first-level screening box performs preliminary screening on larger particles, while smaller particles fall through the through slot into the second-level screening box below for more detailed screening.

[0017] (2) The utility model has the beneficial effect of providing a quick-clamping mechanism. The quick-clamping mechanism enables the equipment to be quickly disassembled and reassembled when maintenance or adjustment is required, which greatly shortens the downtime and improves the efficiency of the equipment. The rotating sleeve provides a limited rotation of the locking rod, and cooperates with the compression and release of the stabilizing spring to ensure the stability and quick release of the connection. The operation is simple and safe.

[0018] (3) The present invention is provided with a clamping auxiliary mechanism, and the adjustment tube can rotate in the support bearing. The design of the annular gear bar and the rotating gear allows fine adjustment of the clamping position, thereby enhancing the flexibility and adaptability of the device. Through the engagement of the annular gear bar and the rotating gear, the position of the adjustment tube can be precisely controlled, making the operation more precise and stable, thereby improving the accuracy and reliability of the overall operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 for Figure 1 The right side diagram of

[0021] Figure 3 This is a structural diagram of the connection between the shaking box and the driving device of the utility model;

[0022] Figure 4 This is a structural diagram of the quick clamping mechanism and the clamping auxiliary mechanism of the utility model;

[0023] Figure 5It is a schematic diagram of the internal structure of the quick clamping mechanism and the clamping auxiliary mechanism of the utility model.

[0024] Description of main reference numerals:

[0025] 1. Frame; 2. Turntable; 3. Vertical rod; 4. Primary screening box; 5. Secondary screening box; 6. Oblique rod; 7. Roller; 8. Adapter tube; 9. Adapter rod; 10. Rotating sleeve; 11. Stabilizing spring; 12. Limiting plate; 13. Lateral rod; 14. Locking rod; 15. Slot; 16. Bottom plate; 17. Support bearing; 18. Adjusting tube; 19. Ring gear; 20. Rotating gear; 21. Lateral ring plate; 22. Driving motor; 23. Transmission assembly; 24. Rotating shaft; 25. Diverter bucket; 26. Through slot; 27. First connecting rod; 28. Second connecting rod; 29. ​​Guide groove; 30. Guide block. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solution of this utility model. Obviously, the embodiments described are part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this utility model.

[0027] Example

[0028] See attached Figure 1-5 A limestone crusher pre-screening device includes a frame 1, a shaking screening mechanism, a quick clamping mechanism and a clamping auxiliary mechanism. The shaking screening mechanism includes a turntable 2, a vertical rod 3, a primary screening box 4, a secondary screening box 5, an inclined rod 6 and a roller 7. The vertical rod 3 is installed around one end surface of the turntable 2, the secondary screening box 5 is connected to the vertical rod 3, the primary screening box 4 is installed on the top of the secondary screening box 5, the inclined rod 6 is installed at the top of the frame 1, and the roller 7 is installed at the bottom of the secondary screening box 5, and the roller 7 and the inclined rod 6 are connected in a guided rolling manner. The quick clamping mechanism includes a clamping tube 8, a clamping Rod 9, rotating sleeve 10, stabilizing spring 11, limiting plate 12, lateral rod 13, locking rod 14 and card slot 15, the clamping rod 9 can be extended into the interior of the clamping tube 8 and compress the stabilizing spring 11 at the top end of the inner side of the clamping tube 8, the rotating sleeve 10 is installed on the side wall of the clamping tube 8 for lateral limiting rotation, the locking rod 14 is threadedly connected to the inner wall of the rotating sleeve 10, the lateral rods 13 on both sides of the locking rod 14 are directionally arranged on the side wall of the clamping tube 8, the card slot 15 is arranged on the side of the clamping rod 9, the limiting plate 12 is installed on the side of the clamping rod 9, and one end face of the limiting plate 12 is in contact with the end face of the clamping tube 8.

[0029] In this embodiment, the driving motor 22 is started, and the transmission component 23 at the output end drives the rotating shaft 24, thereby rotating the turntable 2. The rotation of the turntable 2 drives the vertical rods 3 installed around it and the connected secondary screening box 5 to shake together. The limestone raw materials first enter the primary screening box 4 for preliminary screening. The larger stones remain in the primary screening box 4, and the smaller stones fall into the secondary screening box 5 below through the through slot 26 at the bottom. The cooperation of the inclined rod 6 and the roller 7 makes the secondary screening box 5 maintain stability during rotation, optimizing the screening effect. The screened stones are guided by the diverter bucket 25. Entering the collecting device, the effective separation and collection of materials is achieved, which facilitates the quick connection and disassembly of the screening box and the drive assembly. The clamping rod 9 is extended into the clamping tube 8 through the operator's action, and the compression of the stabilizing spring 11 is used to achieve rapid stabilization. The rotating sleeve 10 is rotated by the clamping auxiliary mechanism to drive the internal locking rod 14 and the side rod 13 to extend into the clamping groove 15 of the clamping rod 9, thereby achieving a firm fixation of the clamping rod 9 and the clamping tube 8. The setting of the limiting plate 12 ensures that the position of the clamping rod 9 in the clamping tube 8 is accurate, prevents excessive movement, and ensures safe and precise operation.

[0030] The clamping auxiliary mechanism includes a bottom plate 16, a support bearing 17, an adjustment tube 18, an annular gear bar 19, a rotating gear 20 and a lateral ring plate 21. The bottom plate 16 is installed on the bottom end of the side of the clamping tube 8, the support bearing 17 is installed on the top end face of the bottom plate 16, and the adjustment tube 18 is matched with the support bearing 17 and connected. The annular gear bar 19 is installed on the top end face of the adjustment tube 18, the lateral ring plate 21 is installed on the top of the annular gear bar 19, and the side face of the rotating gear 20 is in contact with the lateral annular plate, the rotating gear 20 is matched with the rotating sleeve 10, and the rotating gear 20 and the annular gear bar 19 are meshed and connected.

[0031] When the operation process of the auxiliary mechanism is required to be clamped, the adjustment tube 18 is installed in the support bearing 17 and can rotate. The annular gear bar 19 is fixed on its top and engages with the rotating gear 20. The operator can rotate the adjustment tube 18 to drive the annular gear bar 19 to rotate, thereby driving the rotating gear 20 to rotate. The rotating gear 20 is connected to the rotating sleeve 10. The lateral ring plate 21 is installed on the top of the annular gear bar 19 to provide additional stability and support for the clamping mechanism, thereby realizing fine position adjustment of the clamping mechanism to adapt to different operating requirements.

[0032] In addition, in this embodiment, a driving motor 22 is provided at the bottom of the frame 1, and a transmission assembly 23 is provided at the output end of the driving motor 22. A rotating shaft 24 is provided on the transmission assembly 23, and the rotating shaft 24 is cooperated with the center of the turntable 2. A diverter bucket 25 is provided on the side of the primary screening box 4 and the secondary screening box 5, and the outlet of the diverter bucket 25 is led to the collection device. A through groove 26 is provided on the bottom end surface of the primary screening box 4, and multiple groups of through grooves 26 are directly opposite to the secondary screening box 5. A first connecting rod 27 is movably provided on the side of the secondary screening box 5, and a second connecting rod 28 is movably provided on the vertical rod 3, and the clamping rod 9 is fixedly connected to the second connecting rod 28, the clamping tube 8 is fixedly connected to the first connecting rod 27, and a guide groove 29 is provided on the side of the clamping rod 9, and a guide block 30 is provided on the inner wall of the clamping tube 8. The diverter bucket 25 helps to effectively guide the screened limestone into the collection device, optimize material flow, and reduce material loss. The configuration of the drive motor 22 and the transmission assembly 23 ensures the stable and continuous rotation of the turntable 2, provides the required power support, and ensures the continuity and efficiency of the screening process.

[0033] During use or operation, when the operation of the screening mechanism needs to be shaken, the drive motor 22 is started, and the transmission assembly 23 at the output end drives the rotating shaft 24, thereby rotating the turntable 2. The rotation of the turntable 2 drives the vertical rods 3 installed around it and the connected secondary screening box 5 to shake together. The limestone raw materials first enter the primary screening box 4 for preliminary screening. The larger stones remain in the primary screening box 4, and the smaller stones fall into the secondary screening box 5 below through the through groove 26 at the bottom. The cooperation of the inclined rod 6 and the roller 7 makes the secondary screening box 5 maintain stability during rotation, optimizes the screening effect, and the screened stones are guided into the collection device through the diverter bucket 25, thereby realizing effective separation and collection of materials.

[0034] When the operation of the quick clamping mechanism is required, it is convenient to quickly connect and disassemble the screening box and the drive assembly. The clamping rod 9 is extended into the clamping tube 8 through the operator's action, and the compression of the stabilizing spring 11 is used to achieve rapid stabilization. The rotating sleeve 10 is rotated by the clamping auxiliary mechanism to drive the internal locking rod 14 and the side rod 13 to extend into the clamping groove 15 of the clamping rod 9, thereby achieving a firm fixation of the clamping rod 9 and the clamping tube 8. The setting of the limiting plate 12 ensures that the position of the clamping rod 9 in the clamping tube 8 is accurate, prevents excessive movement, and ensures safe and accurate operation.

[0035] When the operation process of the auxiliary mechanism is required to be clamped, the adjustment tube 18 is installed in the support bearing 17 and can rotate. The annular gear bar 19 is fixed on its top and engages with the rotating gear 20. The operator can rotate the adjustment tube 18 to drive the annular gear bar 19 to rotate, thereby driving the rotating gear 20 to rotate. The rotating gear 20 is connected to the rotating sleeve 10. The lateral ring plate 21 is installed on the top of the annular gear bar 19 to provide additional stability and support for the clamping mechanism, thereby realizing fine position adjustment of the clamping mechanism to adapt to different operating requirements.

[0036] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the present invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the present invention and various options and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A limestone crusher pre-screening device, characterized in that: It includes a frame, a shaking screening mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, wherein: The shaking screening mechanism comprises a rotating disk, a vertical rod, a primary screening box, a secondary screening box, an inclined rod and a roller, wherein the vertical rod is mounted on the periphery of one end surface of the rotating disk, the secondary screening box is connected with the vertical rod, the primary screening box is mounted on the top of the secondary screening box, the roller is mounted on the bottom of the secondary screening box, and the roller and the inclined rod are connected with each other in a guided rolling manner; The quick clamping mechanism includes a clamping tube, a clamping rod, a rotating sleeve, a stabilizing spring, a limiting plate, a lateral rod, a locking rod and a clamping groove. The clamping rod can extend into the interior of the clamping tube and compress the stabilizing spring at the top end of the clamping tube. The rotating sleeve is rotatably mounted on the side wall of the clamping tube with a transverse limit. The locking rod is threadedly connected to the inner wall of the rotating sleeve. The lateral rods on both sides of the locking rod are directionally arranged on the side wall of the clamping tube. The clamping groove is arranged on the side of the clamping rod, and the limiting plate is installed on the side of the clamping rod.

2. The limestone crusher pre-screening device according to claim 1, characterized in that: The clamping auxiliary mechanism includes a bottom plate, a supporting bearing, an adjusting tube, an annular gear bar, a rotating gear and a lateral annular plate. The bottom plate is installed on the bottom end of the side of the clamping tube, the supporting bearing is installed on the top end surface of the bottom plate, and the adjusting tube is matched with the supporting bearing and connected, the annular gear bar is installed on the top end surface of the adjusting tube, the lateral annular plate is installed on the top of the annular gear bar, and the side surface of the rotating gear is in contact with the lateral annular plate, the rotating gear is matched with the rotating sleeve, and the rotating gear and the annular gear bar are meshed and connected.

3. The limestone crusher pre-screening device according to claim 1, characterized in that: A driving motor is arranged at the bottom of the frame, and a transmission assembly is arranged at the output end of the driving motor.

4. The limestone crusher pre-screening device according to claim 3, characterized in that: The transmission assembly is provided with a rotating shaft, and the rotating shaft is matched and connected with the center of the rotating disk.

5. The limestone crusher pre-screening device according to claim 1, characterized in that: The sides of the primary screening box and the secondary screening box are provided with diverter buckets, and the outlets of the diverter buckets are led to the collecting device.

6. The limestone crusher pre-screening device according to claim 1, characterized in that: The inner bottom end surface of the first-level screening box is provided with through grooves, and a plurality of groups of through grooves are directly opposite to the second-level screening box.

7. The limestone crusher pre-screening device according to claim 1, characterized in that: A first connecting rod is movably provided on the side of the secondary screening box, a second connecting rod is movably provided on the vertical rod, the clamping rod is fixedly connected to the second connecting rod, and the clamping tube is fixedly connected to the first connecting rod.

8. The limestone crusher pre-screening device according to claim 1, characterized in that: A guide groove is arranged on the side surface of the clamping rod, and a guide block is arranged on the inner wall of the clamping tube.

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