Sieve plate for crusher and crushing device thereof

Abstract

The utility model relates to the technical field of machining, and particularly discloses a sieve plate for a crusher and a crushing device of the sieve plate. Comprising a first screening section, a second screening section and a third screening section; the first material screening section and the third material screening section are connected through the second material screening section. The first material screening section is a rectangular plate, and the third material screening section is an arc-shaped plate. The first material screening section, the second material screening section and the third material screening section are each provided with a plurality of evenly-distributed material screening holes. The material screening holes are wave-shaped screening holes; the wave-shaped sieve holes are longitudinally formed in the sieve plate; every two of the wavy sieve holes longitudinally formed in the sieve plate in each row are arranged in a staggered manner. Through the design of the sieve plate, the discharged materials of the crushing device can be effectively screened, and the materials with required particle sizes are ensured to pass through and do not need to be treated again.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a screen plate for a crushing device and a crushing device thereof. Background Art

[0002] The material enters the dynamic cleaning screen through the feed port of the dynamic cleaning, screening and crushing machine. The material impacts the buffer device of the dynamic cleaning screen to be buffered and initially distributed, and then enters the screening and distribution device. After being buffered, the material will be screened and distributed along the inclined screen surface. At the same time, the rotating cleaning wheel rotates in the screen hole along the direction of material movement, pushing the material forward and cleaning the material adhered to the screen hole. The qualified particle size material falls through the screen hole and directly enters the lower belt conveyor. The unqualified particle size material enters the dynamic cleaning and crushing device after distribution for crushing. After entering the dynamic cleaning and crushing device, the material is hit by the hammer on the main rotor to the counter-crushing device for hammering and extrusion for crushing.

[0003] At present, the screen plates used in crushing devices are mostly long strips of screen holes, that is, the long diameter of the screen holes is relatively large, so that many flakes fall from the screen holes, and the presence of flakes should be avoided as much as possible in the finished material after crushing. At the same time, the screen holes of the current crushing device screen plates are usually rectangular or square in cross section. In order to ensure the life of the screen plate, the thickness of the screen plate is usually thicker, usually not less than 30mm.

[0004] In the patent "A Screen Plate for a Crushing Device" (publication number CN220177148U, hereinafter referred to as prior art 1), a screen plate for a crushing device is disclosed. The stability and bearing capacity of the overall structure of the screen plate of the crushing device are enhanced by the setting of a connecting frame and a supporting frame. The setting of the connecting frame can ensure that the screen plate will not loosen or deform during use, thereby maintaining the effective working state of the screen plate. The setting of the supporting frame can disperse and bear external pressure, reduce the pressure of the main plate, and extend the service life of the main plate. Through this structural design, the function and performance of the screen plate of the crushing device are optimized, the work efficiency is improved and the maintenance cost is reduced; the thickness of the screen plate in the prior art 1 is still relatively thick, which leads to a longer path for qualified materials to pass through the screen hole, a longer passing time, and the material is very easy to be blocked in the screen hole, which ultimately leads to a decrease in the output of the crushing device and a deterioration of the crushing effect; and the screen hole in the prior art 1 is also a conventional shape, which cannot avoid the passage of sheet materials. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a screen plate for a crushing device and a crushing device thereof, so as to solve the problem that the existing screen plate is too thick, causing materials to be easily blocked in the screen holes, and the screen holes are relatively conventional in shape and cannot prevent sheet materials from passing through.

[0006] In the first aspect, an embodiment of the utility model provides a screen plate for a crushing device, comprising a first screen material section, a second screen material section and a third screen material section; the first screen material section and the third screen material section are connected through the second screen material section; the first screen material section is arranged as a rectangular plate, and the third screen material section is arranged as an arc plate; the first screen material section, the second screen material section and the third screen material section are all provided with a number of evenly distributed screen material holes; the screen material holes are wavy screen holes; the wavy screen holes are longitudinally arranged on the screen plate; each row of wavy screen holes longitudinally arranged on the screen plate are staggered between two.

[0007] Preferably, both sides of the wavy sieve hole section are wavy lines, and both ends of the wavy sieve hole section are semicircular; the two sides of the wavy sieve hole section are parallel to each other; the connection between the protruding end and the recessed end of the wavy line is tangent to the protruding end and the recessed end respectively.

[0008] Preferably, the surfaces of the sieve plate are a screening surface and a discharge surface respectively; the wavy sieve holes are arranged in a conical shape from the screening surface toward the discharge surface.

[0009] In a second aspect, a crushing device is provided, comprising a screen plate for a crushing device as described in any of the above items; the crushing device comprises a crushing part, the screen plate is arranged on the outside of the crushing part and covers all the discharge notches of the crushing part; the two ends of the screen plate are respectively fixed by the top cover plate and the bottom receiving plate of the crushing device; the crushing part is arranged in a crushing chamber of the crushing device; the crushing part comprises a first bearing seat and a second bearing seat arranged on both sides of the crushing chamber and a transmission shaft arranged between the first bearing seat and the second bearing seat; the two ends of the transmission shaft are respectively movably connected to the first bearing seat and the second bearing seat.

[0010] Preferably, the screen plate is provided with an assembly part at the head end of the first screen material section; the assembly part is fixedly assembled with the top cover plate of the crushing device; and the third screen material section is fixedly connected with the bottom of the crushing chamber by bolts.

[0011] Preferably, the transmission shaft is provided with a first rotating arm and a second rotating arm; the first rotating arm and the second rotating arm are vertically arranged; the first rotating arm and the second rotating arm are fixedly assembled with the transmission shaft.

[0012] Preferably, both ends of the first rotating arm and the second rotating arm are provided with ring hammers; the outer peripheries of the ring hammers at both ends of the first rotating arm are also provided with a plurality of evenly distributed crushing teeth.

[0013] Preferably, the ring hammers provided at both ends of the first rotating arm are small ring hammers, and the ring hammers provided at both ends of the second rotating arm are large ring hammers; the circumscribed circles of the large ring hammers and the crushing teeth are kept at a safe distance from the screening surface of the screen plate.

[0014] Preferably, a discharge plate is provided at the discharge notch; the discharge plate is arranged at an incline.

[0015] Preferably, a baffle is further provided on the side of the sieve plate close to the discharge notch, and the baffle is fixed to the top cover plate and arranged at an inclination on the top cover plate.

[0016] The utility model provides a sieve plate for a crushing device and a crushing device thereof, which has the following beneficial effects:

[0017] The setting of the sieve plate can have an efficient screening function. The sieve plate design can effectively screen the output of the crushing device to ensure that the material of the required particle size passes through without the need for reprocessing. The wave-shaped sieve hole setting also avoids the problem that more sheet-shaped and block-shaped objects in the application can pass through after being crushed due to the relatively simple shape of the existing sieve holes. The use of the wavy sieve hole design reduces the possibility of special shapes passing through, improves the screening capacity, and can effectively prevent blockage and reduce the frequency of maintenance and cleaning. By dividing the sieve plate into different screening sections, multi-segment screening can be performed as needed to improve the screening efficiency, and the sieve holes of different shapes can adapt to different material characteristics, increasing the flexibility of screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0019] Figure 1 The invention is a schematic diagram of a cross-sectional structure of a screen plate for a crushing device and a crushing device thereof;

[0020] Figure 2 is a schematic diagram of a transmission part of a crushing device;

[0021] Figure 3 It is a side view of a screen plate for a crusher;

[0022] Figure 4 This is an expanded view of a screen plate for a crusher;

[0023] Figure 5 yes Figure 4 A partial enlarged view of

[0024] Figure 6 yes Figure 4 Schematic diagram of an oblique cross section;

[0025] Parts and numbers in the picture:

[0026] 1-crushing device, 11-crushing chamber, 12-discharging gap, 13-top cover plate, 14-receiving plate, 15-first bearing seat, 16-second bearing seat, 17-transmission shaft, 18-first rotating arm, 19-second rotating arm, 20-small ring hammer, 21-large ring hammer, 22-crushing teeth, 23-discharging plate; 3-screen plate, 31-first screening section, 32-second screening section, 33-third screening section, 34-screen hole, 341-wavy screen hole, 35-screen surface, 36-discharging surface, 37-bolt, 38-bolt hole, 39-baffle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0028] Example 1

[0029] See also Figures 1 to 6The embodiment of the utility model provides a screen plate for a crusher, comprising a crushing part 11 and a screen plate 3 arranged outside the crushing part 11; the crushing part 11 is horizontally installed inside the crushing device 1; the crushing part 11 comprises a first bearing seat 15 and a second bearing seat 16 arranged on both sides of the crushing chamber and a transmission shaft 17 arranged between the first bearing seat 15 and the second bearing seat 16; the two ends of the transmission shaft 17 are movably connected with the first bearing seat 15 and the second bearing seat 16 respectively; a first rotating arm 18 and a second rotating arm 19 are arranged on the transmission shaft 17; the first rotating arm 18 and the second rotating arm 19 are arranged vertically; the first rotating arm 18 and the second rotating arm 19 are fixedly assembled, and the first rotating arm 18 and the second rotating arm 19 rotate simultaneously with the rotation of the transmission shaft 17; the transmission shaft 17 is movably assembled with the first bearing seat 15 and the second bearing seat 16 through the bearing arranged in the bearing seat, and this movable assembly is that the transmission shaft 17 rotates based on the first bearing seat 15 and the second bearing seat 16, and drives the components on the transmission shaft 17 to work.

[0030] The sieve plate 3 covers the entire discharge notch 12 of the crushing part 11; the two ends of the sieve plate 3 are fixed by the top cover plate 13 and the bottom receiving plate 14 of the crushing device 1 respectively; the sieve plate 3 includes a first screening section 31, a second screening section 32 and a third screening section 33; the first screening section 31 and the third screening section 33 are bridged by the second screening section 32; the first screening section 31 is arranged in a straight line segment, and the third screening section 33 is arranged in an arc shape; the crushing part 11 is arranged in the crushing chamber of the crushing device 1; the sieve plate 3 is provided with an assembly part 37 at the head end of the first screening section 31; the assembly part 37 is fixedly assembled with the top cover plate 13 of the crushing device 1; the third screening section 33 is fixedly connected with the bottom of the crushing chamber by bolts 37, and the sieve plate 3 is provided with a plurality of bolt holes 38 for fixing on the screening surface 35, and the bolts 37 are connected with the bolt holes 38 It is installed in coordination and fixed on the body of the crushing device 1, which is more stable; during installation, the warehouse door set at the discharge notch 12 is opened, the first screening section 31 is horizontally inserted into the crushing chamber, and then the third screening section 33 is fitted with the receiving plate 14 at the bottom of the crushing device 1, and the curvature of the third screening section 33 is matched with the curvature of the receiving plate 14 at the bottom of the crushing device 1, so that they can be fitted; after fitting, the assembly part 37 at the head end of the first screening section 31 is hung into the mounting groove of the top cover plate 13 of the crushing device 1; at this time, the position of the screen plate 3 has been fixed, so that the screen plate 3 will not shake up and down with the vibration generated by the crushing device 1 during operation, thereby causing the risk of falling off; the third screening section 33 of the screen plate 3 is fixed to the receiving plate 14 at the bottom of the crushing device 1 by bolts 37, so that the position of the screen plate 3 will not produce relative displacement. Furthermore, by completely covering the discharge opening 12 with the first screening section 31, the second screening section 32 and the third screening section 33 of the screening plate 3, the material can be fully screened and crushed to meet the requirements.

[0031] The first screening material section 31, the second screening material section 32 and the third screening material section 33 are all provided with a number of evenly distributed screening material holes 34; the screening material holes 34 are wavy screening material holes 341; the wavy screening material holes 341 are longitudinally arranged on the screening plate 3; each row of wavy screening material holes 341 longitudinally arranged on the screening plate 3 are staggered between each other; both sides of the cross section of the wavy screening material holes 341 are wavy lines, and both ends of the cross section of the wavy screening material holes 341 are semicircular; the wavy lines are provided with even protrusions and depressions, and the protrusions and depressions are smoothly connected; The wavy lines are provided with a certain interval, and this interval is the gap for the material to pass through; the two end buckets of the wavy lines on both sides are connected by two semicircles of the same diameter, so that the wavy screening holes 341 are closed; the two sides of the cross section of the wavy screening holes 341 are parallel to each other; the connection between the convex end and the concave end of the wavy line is tangent to the convex end and the concave end respectively; a crushing device 1 uses a sieve plate 3 as an arc sieve plate 3, which is composed of a straight section of a first screening section 31 and an arc section of a third screening section 33, and the arc section of the third screening section 33 is arranged along the tangent direction of the straight section of the first screening section 31. A plurality of wavy screening holes 341 are opened on the arc sieve plate 3 of the third screening section 33, and the wavy screening holes 341 are arranged along the direction of material flow, vertically or longitudinally; the arc sieve plate 3 is fixed to the discharge notch 12 of the crushing device 1 by means of the bolts 37 holes on the sieve plate 3. For details, please refer to Figure 5 The cross section of the wave-shaped screening hole 341 of the arc-shaped screen plate 3 is composed of a rectangular section and a trapezoidal section, and is set at a certain taper; one side of the rectangular section is in contact with the crushed material, that is, the material with qualified particle size enters the side, and the side of the trapezoidal section is the side where the material with qualified particle size is screened out; one side of the rectangular section is in contact with the crushed material, and the side of the trapezoidal section is the side where the material with qualified particle size is screened out. The material enters the screening hole 34 from the rectangular section, then enters the trapezoidal section, and finally is screened out from the screening hole 34. When passing through the screening hole 34, the material will only come into contact with the screening surface 34 at the rectangular section, and will not come into contact with the trapezoidal section, which greatly reduces the passing path of the material in the screening hole 34, and reduces the passing time of the material in the screening hole 34, thus greatly reducing the risk of the material blocking the screening hole 34, and ensuring that the material passes through the discharge surface 36 normally. At the same time, due to the existence of the rectangular cross-section, the sieve holes 34 have a certain amount of wear, and there will be no situation where the sieve holes 34 gradually become larger as the sieve plate 3 wears, thus ensuring the service life of the sieve plate 3.

[0032] For details, please see Figure 4At the same time, the length and width of each wave of the wavy screening hole 341 of the arc-shaped screen plate 3 are equal, that is, each wavy screening hole 341 is composed of several square screening holes 34. The qualified materials crushed by the crushing device 1 need to be screened out from the screening holes 34 of the screen plate 3. The screening holes 34 of the screen plate 3 are arranged along the direction of material flow, which greatly increases the probability of materials entering the screening holes 34. The screening holes 34 are wavy screening holes 341, and the length and width of each wave are equal, so that the wavy screening holes 341 are composed of several square screening holes 34, which is different from the traditional long strip screening holes 34. This greatly avoids the possibility of sheet materials entering the screening holes 34, and further improves the qualified rate of the crushing device 1.

[0033] Preferably, both ends of the first rotating arm 18 and the second rotating arm 19 are provided with ring hammers; the outer periphery of the ring hammers at both ends of the first rotating arm 18 is also provided with a number of evenly distributed crushing teeth 22; the ring hammers arranged at both ends of the first rotating arm 18 are small ring hammers 20, and the ring hammers arranged at both ends of the second rotating arm 19 are large ring hammers 21; the circumscribed circles of the large ring hammers 21 and the crushing teeth 22 are both kept at a safe distance from the screening surface 35 of the screen plate 3; large materials are crushed by the cooperation of the small ring hammers 20 and the crushing teeth 22, and then crushed by the large ring hammers 21, so that the materials are fully crushed, so that the crushing efficiency and quality are higher; a discharge plate 23 is provided at the discharge notch 12; the discharge plate 23 is inclined; the material is brought out by the ring hammers arranged at both ends of the first rotating arm 18 and the second rotating arm 19 as it rotates, and the qualified crushed material will pass through the screen plate 3 and will be on the discharge plate 23, which is set at a certain angle to make its discharge faster and more convenient.

[0034] A baffle plate 39 is also provided on the side of the sieve plate 3 close to the discharge notch 12. The baffle plate 39 is fixed on the top cover plate 13 and is inclined at the top cover plate 13. Since part of the material will be crushed very finely and will rush out directly from the sieve hole 34, according to the setting of the sieve plate 3, part of the material will contact the top cover plate 13 of the crushing device 1, causing the top cover plate 13 to be worn. By adopting the setting of the baffle plate 39, the material rushing out is blocked by the baffle plate 39 and rebounds on the discharge plate 23 for direct discharge.

[0035] Example 2

[0036] See also Figures 1 to 3The embodiment of the utility model provides a screen plate for a crushing device and a crushing device thereof; a screen plate for a crushing device and a crushing device thereof have the following beneficial effects: first, it has an efficient screening function. The screen plate 3 is designed to effectively screen the output of the crushing device 1 to ensure that the material of the required particle size passes through without the need for further processing; the wave-shaped screening holes 34 are set to avoid the problem that more sheet-shaped and block-shaped objects in the application can pass through after being crushed due to the relatively single shape of the existing screening holes 34. The wave-shaped screening holes 341 design reduces the possibility of special shapes passing through, improves the screening capacity, and can also effectively prevent blockage and reduce the frequency of maintenance and cleaning; by dividing the screen plate 3 into For different screening sections, multi-stage screening can be carried out as needed to improve the screening efficiency, and the sieve holes of different shapes can adapt to different material characteristics, increasing the flexibility of screening; the structure is stable and reliable, and the fixed structure design of the screen plate 3 makes it stably and reliably installed in the crushing device 1, and it is not easy to shift or damage, thereby improving the service life and stability of the equipment; the crushing arm design makes the crushing process more efficient, and the setting of the ring hammer and the crushing teeth 22 can effectively improve the crushing effect and ensure the uniform crushing of the material; the safety design, the large ring hammer 21 and the crushing teeth 22 maintain a safe distance from the screening surface 35 of the screen plate 3, which can effectively avoid accidental collisions and ensure the safety of operators.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A screen plate for a crusher, characterized in that: The device comprises a first screening material section (31), a second screening material section (32) and a third screening material section (33); the first screening material section (31) and the third screening material section (33) are connected via the second screening material section (32); The first screening material section (31) is arranged as a rectangular plate, and the third screening material section (33) is arranged as an arc-shaped plate; the first screening material section (31), the second screening material section (32) and the third screening material section (33) are all provided with a plurality of evenly distributed screening material holes (34); the screening material holes (34) are wavy screening material holes (341); The wavy sieve holes (341) are longitudinally arranged on the sieve plate (3); each row of wavy sieve holes (341) longitudinally arranged on the sieve plate (3) are staggered between each other.

2. A screen plate for a crusher according to claim 1, characterized in that: Both sides of the cross section of the wavy sieve hole (341) are wavy lines, and both ends of the cross section of the wavy sieve hole (341) are semicircular; the two sides of the cross section of the wavy sieve hole (341) are parallel to each other; and the connection between the protruding end and the concave end of the wavy line is tangent to the protruding end and the concave end respectively.

3. A screen plate for a crusher according to claim 2, characterized in that: The surfaces of the sieve plate (3) are respectively a screening surface (35) and a discharge surface (36); the wavy sieve holes (341) are arranged in a conical shape in a direction from the screening surface (35) toward the discharge surface (36).

4. A crushing device, characterized in that: It comprises a screen plate for a crusher as claimed in any one of claims 1 to 3; the crushing device comprises a crushing part, the screen plate (3) is arranged outside the crushing part and covers the entire discharge notch (12) of the crushing part; The two ends of the screen plate (3) are respectively fixed by a top cover plate (13) and a bottom receiving plate (14) of the crushing device (1); The crushing part is arranged in a crushing chamber (11) of the crushing device (1); the crushing part comprises a first bearing seat (15) and a second bearing seat (16) arranged on both sides of the crushing chamber (11), and a transmission shaft (17) arranged between the first bearing seat (15) and the second bearing seat (16); two ends of the transmission shaft (17) are respectively movably connected to the first bearing seat (15) and the second bearing seat (16).

5. A crushing device according to claim 4, characterized in that: The sieve plate (3) is provided with an assembly part at the head end of the first sieve section (31); the assembly part is fixedly assembled with the top cover plate (13) of the crushing device (1); and the third sieve section (33) is fixedly connected to the bottom of the crushing chamber (11) via bolts (37).

6. A crushing device according to claim 4, characterized in that: A first rotating arm (18) and a second rotating arm (19) are provided on the transmission shaft (17); the first rotating arm (18) and the second rotating arm (19) are arranged vertically; and the first rotating arm (18) and the second rotating arm (19) are fixedly assembled with the transmission shaft (17).

7. A crushing device according to claim 6, characterized in that: Both ends of the first rotating arm (18) and the second rotating arm (19) are provided with ring hammers; and a plurality of evenly distributed crushing teeth (22) are also provided on the outer peripheries of the ring hammers at both ends of the first rotating arm (18).

8. A crushing device according to claim 7, characterized in that: The ring hammers provided at both ends of the first rotating arm (18) are small ring hammers (20), and the ring hammers provided at both ends of the second rotating arm (19) are large ring hammers (21); the circumscribed circles of the large ring hammers (21) and the crushing teeth (22) are both kept at a safe distance from the screening surface (35) of the screen plate (3).

9. A crushing device according to claim 7, characterized in that: A discharge plate (23) is provided at the discharge notch (12); the discharge plate (23) is arranged in an inclined manner.

10. A crushing device according to claim 7, characterized in that: A baffle plate (39) is also provided on the side of the screen plate (3) close to the discharge notch (12), and the baffle plate (39) is fixed on the top cover plate (13) and is arranged at an angle on the top cover plate (13).

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