Sand making equipment for machine-made sand

Abstract

The invention discloses machine-made sand making equipment, and particularly relates to the technical field of sand making equipment, the machine-made sand making equipment comprises an impact crusher body and a fixing frame used for installing the impact crusher body, a pre-screening component is fixed on the upper side of the input end of the impact crusher body, a pre-crushing component is fixed on one side of the pre-screening component, and the pre-crushing component is fixed on the other side of the pre-screening component. And the pre-crushing part comprises a crushing box, an inner cavity of the crushing box is slidably connected with a mounting plate, a plurality of mounting blocks are fixed to the two sides of the mounting plate, an extrusion part is rotationally connected between the two mounting blocks on the same straight line, and a toothed plate matched with the extrusion part is fixed to the inner cavity of the crushing box. According to the sand making equipment for the machine-made sand, materials can be pre-crushed through the arranged pre-crushing component, so that the problem that the service life of a core component of an impact crusher is short under the working condition of high-hardness materials is solved, the downtime of frequently replacing the components is shortened, and the influence on the production efficiency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sand making equipment, and particularly relates to a sand making equipment for manufactured sand. Background Art

[0002] Sand making equipment is a kind of equipment specially used for producing artificially manufactured sand materials. It can make various rocks, sandstones, and river pebbles into construction sand or highway sand with various particle sizes. This kind of equipment is widely used in sand and gravel plants and concrete mixing stations, and is especially suitable for projects such as highways, high-speed railways, high-rise buildings, municipal engineering, and hydropower dams that require a large amount of high-quality sand and gravel aggregates. Sand making equipment plays an important role in engineering fields such as construction and roads. Its application not only improves the project quality but also promotes the sustainable development of the sand and gravel industry;

[0003] During the process of sand making by impact crushers, sometimes high-hardness materials need to be processed. The core components such as the plate hammer and the impact plate have a short service life under the working conditions of high-hardness materials (such as basalt and granite). Frequent replacement leads to an increase in downtime, affecting the production efficiency, and the wearing parts wear quickly, increasing the maintenance cost. In addition, if the feeding speed is too fast, a large amount of materials will instantly pour into the equipment, resulting in material accumulation or local over-crushing. Moreover, the qualified particles in the materials are broken again, leading to ineffective crushing, increasing the wear of the device, and affecting the sand making efficiency and product quality. Summary of the Invention

[0004] The purpose of the present invention is to propose a sand making equipment for manufactured sand to solve the problems that during the use of sand making equipment, due to the high hardness of the materials, the core components of the device have a short service life, affecting the production efficiency, and due to the too fast feeding speed, a large amount of materials instantly pour into the equipment, resulting in material accumulation or local over-crushing, and due to the qualified particles in the materials being broken again, leading to ineffective crushing.

[0005] To achieve the above purpose, the present invention adopts the following technical solution: a sand making equipment for manufactured sand:

[0006] It includes an impact crusher body and a fixing frame for installing the impact crusher body. A pre-screening component is fixed on the upper side of the input end of the impact crusher body, and a pre-crushing component is fixed on one side of the pre-screening component;

[0007] The pre-crushing component includes a crushing box. An installation plate is slidably connected to the inner cavity of the crushing box. A plurality of installation blocks are fixed on both sides of the installation plate. An extrusion component is rotatably connected between two installation blocks on the same straight line. A toothed plate adapted to the extrusion component is fixed in the inner cavity of the crushing box;

[0008] The pre-screening component includes an installation box, a circular screening component is fixed inside the installation box, a driving motor is fixed on one side of the installation box, a feeding component that rotates inside the circular screening component is fixed to the output end of the driving motor, and a conveyor is arranged inside the installation box;

[0009] Through the action of the multiple extrusion components and the toothed plates provided, the material can be pre-crushed. Through the feeding component provided, the crushed material can be conveyed to the impact crusher body after rotating inside the circular screening component. During the rotation of the feeding component, the material can also be pre-screened.

[0010] As a further description of a sand making equipment for manufactured sand of the above technology:

[0011] The pre-crushing component further includes a feeding port on the upper side of the crushing box, and a plurality of installation grooves adapted to the installation blocks are provided on both sides of the crushing box.

[0012] As a further description of a sand making equipment for manufactured sand of the above technology:

[0013] A transmission disc assembly is arranged on one side of the crushing box. An eccentric rotating plate is rotatably installed on one side of the transmission disc assembly. The side of the rotating plate far from the transmission disc assembly is connected to the mounting plate through a U-shaped frame.

[0014] As a further description of a sand making equipment for manufactured sand of the above technology:

[0015] An inclined plate is fixed inside the crushing box below the toothed plate, and a discharge port adapted to the inclined plate is provided on one side of the crushing box.

[0016] As a further description of a sand making equipment for manufactured sand of the above technology:

[0017] A plurality of racks adapted to the extrusion components are fixed on one side of the crushing box. The extrusion component includes a mounting rod rotatably installed on the mounting block. A toothed ring is installed on one side of the mounting rod through a one-way bearing. The toothed ring meshes with the rack on the same side. A flipping block is fixed on the outer surface of the mounting rod, and multiple groups of toothed plates are provided on the outer surface of the flipping block.

[0018] As a further description of a sand making equipment for manufactured sand of the above technology:

[0019] A communication groove is provided on one side of the installation box. A baffle groove is fixed on the bottom wall of the inner cavity of the installation box. A spiral guide frame that rotates between the side wall of the installation box and the baffle groove is rotatably installed inside the installation box.

[0020] As a further description of a sand making equipment for manufactured sand of the above technology:

[0021] The output end of the driving motor is connected to the installation shaft of the transmission disc assembly through a belt, and the output end of the driving motor is connected to the installation shaft of the spiral guide frame through a belt.

[0022] As a further description of a sand making equipment for mechanism sand of the above technology:

[0023] The feeding component includes a connecting shaft fixed to the output end of the driving motor. A fixing ring is fixed on the outer surface of the connecting shaft. A plurality of sliding grooves are formed on the outer surface of the fixing ring. A feeding sieve plate is slidably installed in the inner cavity of each of the plurality of sliding grooves through a spring.

[0024] As a further description of a sand making equipment for mechanism sand of the above technology:

[0025] The circular screening component includes an installation ring. A feeding groove adapted to the inclined plate is formed on the outer surface of the installation ring. A discharge groove is formed on the outer surface of the installation ring. An arc-shaped sieve plate is inlaid on the outer surface of the installation ring. A plurality of arc-shaped protrusions are fixed on the inner surface of the arc-shaped sieve plate. The plurality of arc-shaped protrusions are adapted to the feeding sieve plate.

[0026] As a further description of a sand making equipment for mechanism sand of the above technology:

[0027] A screening component is fixed to the lower side of the output end of the impact crusher body. A spiral conveyor adapted to it is fixed to one side of the screening component. The output end of the spiral conveyor extends into the input end of the impact crusher body. A belt conveyor is arranged under the screening component. The screening component includes a screening box. A fixing frame is fixed to the upper side of the screening box. Two symmetrical arc-shaped plates are fixed in the inner cavity of the fixing frame. Vibration components are arranged on both sides of the screening box. A wave sieve plate is fixed between the two vibration components. A collecting box adapted to the wave sieve plate is fixed to one side of the screening box. A guide groove is formed in the inner cavity of the collecting box. The guide groove communicates with the input end of the spiral conveyor.

[0028] In summary, due to adopting the above technology of a sand making equipment for mechanism sand, the beneficial effects of the present invention are:

[0029] 1. The pre-crushing component provided can pre-crush the materials, thus avoiding the problem that the core components of the impact crusher have a short service life under the condition of high-hardness materials, reducing the downtime of frequent component replacement, and reducing the impact on production efficiency; the pre-screening component provided can extend the time for the materials to enter the impact crusher, indirectly affecting the speed of the materials entering the impact crusher, avoiding material accumulation or local over-crushing. In addition, it can also pre-screen the pre-crushed materials, reduce the ineffective crushing of the impact crusher, and reduce the wear of the device.

[0030] 2. By the reciprocating movement of the mounting plate, the device enables the rack and the gear ring to cooperate, causing the flipping block to drive the tooth plate, and cyclically switching the tooth plates on each surface of the flipping block, reducing the wear of a set of tooth plates caused by long-term continuous use, increasing the service life of the tooth plates, thereby reducing the downtime for frequently replacing components and improving the production efficiency of the device.

[0031] 3. During the rotation of the feeding sieve plate, the device contacts a number of arc-shaped protrusions on the arc-shaped sieve plate, enabling the feeding sieve plate to reciprocally shake during rotation, further improving the screening effect of the device. Additionally, when the feeding sieve plate is in a vertical state and the material is located below the inner cavity of the arc-shaped sieve plate, during the continuous rotation of the feeding sieve plate, the adjacent feeding sieve plate will push the material to move, and the arc-shaped sieve plate can also be used to screen the material, increasing the screening path, improving the screening effect of the device, and reducing the ineffective crushing of the impact crusher body.

[0032] 4. The provided screening component can perform secondary screening on the finished product, enabling unqualified material particles to be secondarily crushed, improving the quality of the product produced by the device; the provided wave sieve plate screens the falling finished sand, and the unqualified ones enter the inner cavity of the guide chute and are conveyed to the input end of the screw conveyor, and then conveyed to the input end of the impact crusher body for secondary crushing, while the qualified ones are conveyed to the finished product area by the belt conveyor. Additionally, the shape of the wave sieve plate is wave-shaped, which can increase the path of material tumbling and improve the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shows the overall structure schematic diagram provided according to an embodiment of the present invention Figure 1 ;

[0034] Figure 2 Shows the overall structure schematic diagram provided according to an embodiment of the present invention Figure 2 ;

[0035] Figure 3 Shows the partial structure schematic diagram of the pre-crushing component provided according to an embodiment of the present invention;

[0036] Figure 4 Shows the internal structure schematic diagram of the pre-crushing component provided according to an embodiment of the present invention;

[0037] Figure 5 Shows the cooperation schematic diagram of the installation groove and the installation block provided according to an embodiment of the present invention;

[0038] Figure 6 Shows the shape schematic diagram of the installation groove provided according to an embodiment of the present invention;

[0039] Figure 7Shows a schematic diagram of the overall structure of the pre-crushing component provided according to an embodiment of the present invention;

[0040] Figure 8 Shows a schematic diagram of the installation position of the extrusion component provided according to an embodiment of the present invention;

[0041] Figure 9 Shows a schematic diagram of the structure of the extrusion component provided according to an embodiment of the present invention;

[0042] Figure 10 Shows a schematic diagram of the structure of the pre-screening component provided according to an embodiment of the present invention;

[0043] Figure 11 Shows a cross-sectional view of the structure of the pre-screening component provided according to an embodiment of the present invention;

[0044] Figure 12 Shows a schematic diagram of the internal structure of the pre-screening component provided according to an embodiment of the present invention;

[0045] Figure 13 Shows a schematic diagram of the structure of the feeding component provided according to an embodiment of the present invention;

[0046] Figure 14 Shows a schematic diagram of the structure of the circular screening component provided according to an embodiment of the present invention;

[0047] Figure 15 Shows a schematic diagram of the structure of the screening component provided according to an embodiment of the present invention;

[0048] Figure 16 Shows a schematic diagram of the connection structure of the corrugated sieve plate provided according to an embodiment of the present invention Figure 1 ;

[0049] Figure 17 Shows a schematic diagram of the connection structure of the corrugated sieve plate provided according to an embodiment of the present invention Figure 2 .

[0050] Legend:

[0051] 10, Impact crusher body; 11, Belt conveyor; 12, Fixed frame;

[0052] 20, Pre-screening component; 21, Installation box; 22, Driving motor; 23, Communication slot;

[0053] 24, Circular screening component; 241, Installation ring; 242, Feeding groove; 243, Discharge groove; 244, Arc-shaped protrusion; 245, Arc-shaped sieve plate;

[0054] 25, Feeding component; 251, Connecting shaft; 252, Fixed ring; 253, Chute; 254, Feeding sieve plate; 26, Spiral guide frame; 27, Baffle slot;

[0055] 30. Pre-crushing component; 31. Crushing box; 32. Driving disc assembly; 33. Rotating plate; 34. Mounting plate; 35. Mounting block; 351. Mounting groove

[0056] 36. Extrusion component; 361. Mounting rod; 362. Ring gear; 363. Flipping block; 364. Tooth plate

[0057] 37. Inclined plate; 38. Tooth plate; 39. Rack

[0058] 40. Screening component; 41. Screening box; 42. Fixed frame; 43. Arc plate; 44. Vibration assembly; 45. Wavy sieve plate; 46. Collection box; 47. Feeding chute

[0059] 50. Screw conveyor Detailed implementation manners

[0060] Next, the accompanying drawings in the embodiments of the present invention will be combined to clearly and completely describe the technology of a sand making equipment for manufactured sand in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0061] Embodiment 1

[0062] As Figure 1 and Figure 2 shown, a sand making equipment for manufactured sand includes a counterattack crusher body 10 and a fixing frame 12 for installing the counterattack crusher body 10. The fixing frame 12 is used to install the counterattack crusher body 10. The counterattack crusher body 10 is a prior art and can be used for sand making. The materials for sand making are first removed from the surface soil and impurities by a stone washer, then the materials are dried and sent for sand making, so that the products produced will not contain too many impurities;

[0063] Next, a pre-screening component 20 is fixed on the upper side of the input end of the counterattack crusher body 10. The pre-screening component 20 is used for pre-screening to screen out the qualified materials in the materials and directly send them to the finished product area. A pre-crushing component 30 is fixed on one side of the pre-screening component 20. The pre-crushing component 30 is used to pre-crush the materials to avoid that the particle diameter of the materials entering the counterattack crusher body 10 is too large to be effectively crushed. A screening component 40 is fixed on the lower side of the output end of the counterattack crusher body 10. The screening component 40 is used to screen the manufactured finished products;

[0064] In addition, a matching screw conveyor 50 is fixed on one side of the screening component 40. The output end of the screw conveyor 50 extends into the input end of the impact crusher body 10. The screening component 40 and the screw conveyor 50 are used in cooperation, and can re-convey the unqualified materials in the finished products to the impact crusher body 10 for secondary crushing, improving the product quality. A belt conveyor 11 is arranged under the screening component 40. The belt conveyor 11 is fixedly installed on the fixing frame 12 and is located under the screening component 40. The belt conveyor 11 is used to send the qualified materials screened out by the screening component 40 to the finished product area.

[0065] Furthermore, as Figure 3 - Figure 8 shown, in order to pre-crush the stone materials, a pre-crushing component 30 is provided for crushing the washed and dried stone materials, thereby reducing the loss of the impact crusher body 10. The pre-crushing component 30 includes a crushing box 31 and a feed inlet above the crushing box 31. The crushing box 31 is fixedly connected to the pre-screening component 20. A mounting plate 34 is slidably connected inside the crushing box 31;

[0066] Then, a plurality of mounting blocks 35 are fixed on both sides of the mounting plate 34, and a plurality of mounting grooves 351 adapted to the mounting blocks 35 are provided on both sides of the crushing box 31;

[0067] As Figure 5 and Figure 6 shown, a plurality of mounting blocks 35 on the same side are all located inside a plurality of mounting grooves 351 on the same side. The length of the mounting groove 351 is greater than the length of the mounting block 35. One part penetrates through the mounting block 35, and one part is located inside the mounting block 35 on one side. The mounting block 35 is composed of two plates with different thicknesses. The plate with a smaller thickness moves towards the part of the mounting groove 351 located inside the mounting block 35 during movement, so that the mounting block 35 is completely located inside the mounting groove 351, blocking the mounting groove 351, preventing the crushed materials from splashing outside the crushing box 31, and not affecting the sliding of the mounting block 35;

[0068] Among them, as Figure 8 shown, a squeezing component 36 is rotatably connected between two mounting blocks 35 on the same straight line. The squeezing component 36 is used for crushing materials. A plurality of racks 39 adapted to the squeezing component 36 are fixed on one side of the crushing box 31. The racks 39 can make the squeezing component 36 rotate when it moves towards the pre-screening component 20 side, and the squeezing component 36 will not rotate when it moves away from the pre-screening component 20 side;

[0069] To drive the movement of the mounting plate 34, a transmission disc assembly 32 is provided on one side of the crushing box 31. The transmission disc assembly 32 is fixed to one side of the crushing box 31. The transmission disc assembly 32 includes an L-shaped frame. An installation shaft is rotatably installed on the L-shaped frame. One end of the installation shaft is fixedly installed with a transmission disc. An eccentric rotating plate 33 is rotatably installed on one side of the transmission disc assembly 32. The rotating plate 33 is eccentrically installed on the transmission disc in the transmission disc assembly 32. The side of the rotating plate 33 away from the transmission disc assembly 32 is connected to the mounting plate 34 through a U-shaped frame. The rotating plate 33 is rotatably connected to the U-shaped frame. The U-shaped frame is fixed to one side of the mounting plate 34, so that during the rotation of the transmission disc in the transmission disc assembly 32, the mounting plate 34 reciprocates through the rotating plate 33;

[0070] Next, as Figure 4 shown, a toothed plate 38 adapted to the extrusion member 36 is fixed in the inner cavity of the crushing box 31. A plurality of extrusion members 36 correspond to the toothed plate 38. When the mounting plate 34 moves toward the toothed plate 38, the plurality of extrusion members 36 also move toward the toothed plate 38, and the material can be crushed. An inclined plate 37 is fixed in the inner cavity of the crushing box 31 below the toothed plate 38. The inclined plate 37 is used to receive the crushed material and then convey it to the pre-screening member 20. And a discharge port adapted to the inclined plate 37 is provided on one side of the crushing box 31. The pre-crushed material enters the pre-screening member 20 from the discharge port for pre-screening;

[0071] Further, as Figure 8 and Figure 9 shown, the extrusion member 36 includes a mounting rod 361 rotatably installed on the mounting block 35. The mounting rod 361 is rotatably installed between two mounting blocks 35 on the same straight line. A toothed ring 362 is installed on one side of the mounting rod 361 through a one-way bearing, so that the mounting rod 361 can only rotate unidirectionally. The toothed ring 362 meshes with the rack 39 on the same side. Under the action of the rack 39, the toothed ring 362 can drive the mounting rod 361 to rotate unidirectionally;

[0072] Wherein, a turning block 363 is fixed on the outer surface of the mounting rod 361. A plurality of toothed plate groups 364 are provided on the outer surface of the turning block 363. The toothed plate groups 364 are fixedly connected to the turning block 363. The turning block 363 is a polyhedron. A group of toothed plate groups 364 are fixed on each surface of the turning block 363. And the rotation angle of the mounting rod 361 is also related to the surface of the turning block 363. Each time the mounting rod 361 rotates, only one surface of the turning block 363 corresponds to the toothed plate 38. For example, in this embodiment, the turning block 363 is a tetrahedron, and the rotation angle of the mounting rod 361 each time is ninety degrees, so that after the toothed plate group 364 on one surface of the turning block 363 is used, it will switch to the next surface;

[0073] When the extrusion member 36 moves towards the side of the toothed plate 38, due to the action of the toothed ring 362, the mounting rod 361 will not rotate and can cooperate with the toothed plate 38 to crush the material. When the extrusion member 36 moves towards the side away from the toothed plate 38, due to the action of the toothed ring 362, the toothed ring 362 drives the mounting rod 361 to rotate, thereby causing the flipping block 363 to rotate, and making a set of used toothed plates 364 rotate. Then, when the extrusion member 36 moves towards the side of the toothed plate 38 again, at this time, another set of toothed plates 364 on the flipping block 363 and the toothed plate 38 crush the material. By switching the toothed plates 364 on different faces of the flipping block 363 each time it returns, continuous wear of the toothed plates 364 during long-term use can be avoided, extending the service life of the toothed plates 364. Moreover, during the rotation of the flipping block 363, the material can be flipped, preventing the material from getting stuck between the toothed plate 38 and the extrusion member 36.

[0074] Embodiment 2

[0075] This embodiment further defines the pre-screening component 20 on the basis of Embodiment 1 to achieve the purpose of pre-screening the qualified particle-size materials before feeding them into the impact crusher body 10, thereby reducing the ineffective crushing of the impact crusher body 10.

[0076] Specifically, as Figure 10 — Figure 12 shown, the pre-screening component 20 includes a mounting box 21 fixed to the impact crusher body 10. The mounting box 21 is located on the upper side of the input end of the impact crusher body 10 and is used to convey the material into the inner cavity of the impact crusher body 10. A communication groove 23 adapted to the inclined plate 37 is formed on one side of the mounting box 21. The communication groove 23 is communicated with the discharge port on the crushing box 31, so that the crushed material is conveyed from the inclined plate 37 into the inner cavity of the mounting box 21. A circular screening component 24 is fixed in the inner cavity of the mounting box 21. A conveyor is provided in the inner cavity of the mounting box 21 below the circular screening component 24. The circular screening component 24 is used to screen the crushed material, and the conveyor conveys the qualified material particles to the finished product area;

[0077] Then, a driving motor 22 is fixed on one side of the mounting box 21. The output end of the driving motor 22 is fixed with a feeding component 25 that rotates in the inner cavity of the circular screening component 24. The feeding component 25 rotates in the inner cavity of the circular screening component 24, causing the crushed material to rotate in the inner cavity of the circular screening component 24, and enabling the qualified material particles to be screened out;

[0078] In addition, a baffle groove 27 is fixed to the bottom wall of the inner cavity of the installation box 21, and a spiral guide frame 26 located between the side wall of the installation box 21 and the baffle groove 27 is rotatably installed in the inner cavity of the installation box 21. The spiral guide frame 26 includes a mounting shaft and spiral blades on its surface. The material in the inner cavity of the circular screening component 24 falls from the upper side of the baffle groove 27 onto the spiral guide frame 26, so that the material enters the impact crusher body 10 and is evenly distributed, avoiding eccentric load impact;

[0079] Among them, as Figure 3 shown, the output end of the driving motor 22 is connected to the mounting shaft of the transmission disc assembly 32 through a belt, and the output end of the driving motor 22 is connected to the mounting shaft of the spiral guide frame 26 through a belt. During the rotation of the output end of the driving motor 22, the transmission disc assembly 32 and the spiral guide frame 26 rotate simultaneously;

[0080] Through the arranged feeding component 25, the crushed material can be conveyed to the impact crusher body 10 after rotating inside the circular screening component 24, extending the conveying time of the material, indirectly reducing the conveying speed of the material, avoiding material accumulation or local over-crushing, and screening the crushed material during the rotation of the feeding component 25, so that the qualified material particles can be directly conveyed to the finished product area, reducing the ineffective crushing of the impact crusher body 10.

[0081] Next, as Figure 13 shown, the feeding component 25 includes a connecting shaft 251 fixed to the output end of the driving motor 22. The center of the connecting shaft 251 and the center of the circular screening component 24 are on the same straight line. A fixing ring 252 is fixed to the outer surface of the connecting shaft 251. A plurality of sliding grooves 253 are formed in the outer surface of the fixing ring 252. The inner cavities of the plurality of sliding grooves 253 are all slidably installed with feeding sieve plates 254 through springs. The springs are connected between the feeding sieve plates 254 and the side walls of the sliding grooves 253. The feeding sieve plates 254 are slidably installed in the inner cavities of the sliding grooves 253. Due to the action of the springs, the feeding sieve plates 254 have a certain movement space during rotation;

[0082] Furthermore, as Figure 14As shown, the circular screening component 24 includes a mounting ring 241. The mounting ring 241 is fixedly installed between two side walls of the inner cavity of the installation box 21. A feed groove 242 adapted to the inclined plate 37 is formed on the outer surface of the mounting ring 241. The inclined plate 37 is located on the side wall of the feed groove 242, so that the crushed materials conveyed from the inclined plate 37 can enter the feeding sieve plate 254 in the inner cavity of the mounting ring 241. An outlet groove 243 is formed on the outer surface of the mounting ring 241, and the outlet groove 243 is used to discharge the screened materials. An arc-shaped sieve plate 245 is inlaid on the outer surface of the mounting ring 241. The arc-shaped sieve plate 245 is fixedly inlaid on the mounting ring 241 and is used to filter qualified materials. A plurality of arc-shaped protrusions 244 are fixed on the inner surface of the arc-shaped sieve plate 245. The plurality of arc-shaped protrusions 244 are adapted to the feeding sieve plate 254. During the rotation of the feeding sieve plate 254, due to the action of the arc-shaped protrusions 244, the feeding sieve plate 254 can move reciprocally, so that the materials on the feeding sieve plate 254 shake, thereby achieving the purpose of improving the screening effect;

[0083] When the feeding sieve plate 254 rotates to the lower side, the crushed materials are located on the arc-shaped sieve plate 245, and screening can still be carried out, further prolonging the screening time, improving the screening effect, and reducing the ineffective crushing of the impact crusher body 10.

[0084] In order to improve the quality of the sand making finished products of the device, a screening component 40 for screening is arranged under the impact crusher body 10 of the device. The crushed sand and stones can be screened. After removing the qualified particle size materials, the remaining unqualified materials are fed into the inner cavity of the impact crusher body 10 through the screw conveyor 50 for secondary crushing;

[0085] Specifically, as Figure 15 — Figure 17 shown, the screening component 40 includes a screening box 41. A fixing frame 42 is fixed on the upper side of the screening box 41. The fixing frame 42 is fixed at the output end of the impact crusher body 10, so that the fixing frame 42 communicates with the output end of the impact crusher body 10. The materials fall from the fixing frame 42. Two symmetrical arc plates 43 are fixed in the inner cavity of the fixing frame 42, and the two arc plates 43 can make the materials concentrate and fall to the middle;

[0086] Next, vibration components 44 are provided on both sides of the screening box 41. The vibration components 44 include two mounting brackets, a U-shaped plate, and a vibration motor. The mounting brackets are fixed on one side of the screening box 41. The U-shaped plate is movably installed between the two mounting brackets. The vibration motor is installed in the inner cavity of the U-shaped plate. A groove for the sliding of the U-shaped plate is provided on one side of the vibration component 44. A corrugated sieve plate 45 is fixed between the two vibration components 44. The U-shaped plate in the vibration component 44 is fixedly connected to the corrugated sieve plate 45 through a connecting plate. Through the action of the two vibration components 44, the corrugated sieve plate 45 can vibrate and screen. Moreover, the shape of the corrugated sieve plate 45 is corrugated, which can increase the path of material tumbling and improve the screening efficiency;

[0087] In addition, a collection box 46 adapted to the corrugated sieve plate 45 is fixed on one side of the screening box 41. Unqualified materials on the corrugated sieve plate 45 enter the inner cavity of the collection box 46. A material guiding groove 47 is provided in the inner cavity of the collection box 46. The material guiding groove 47 is inclined, so that the materials can slide in the inner cavity of the material guiding groove 47. The material guiding groove 47 communicates with the input end of the screw conveyor 50. The unqualified materials slide from the material guiding groove 47 to the input end of the screw conveyor 50, and then are conveyed to the input end of the impact crusher body 10 for secondary crushing, improving the product quality produced by the device.

[0088] It should be noted that the impact crusher body 10, the belt conveyor 11, the drive motor 22, the vibration components 44, and the screw conveyor 50 in the present invention are all prior arts, and their installation methods and control methods also belong to conventional designs, which are not elaborated in detail in the present invention.

[0089] The working principle of the present invention: The pre-crushing component 30 provided in this device can pre-crush the materials, thereby avoiding the problem of short service life of the core components of the impact crusher body 10 under the working conditions of high-hardness materials such as basalt and granite, reducing the downtime of frequent component replacement, and reducing the impact on production efficiency;

[0090] First of all, the materials need to be coarsely crushed by a jaw crusher, then washed by a stone washer to remove the soil and impurities on the surface, and then dried and conveyed to the feeding port on the upper side of the crushing box 31. The materials entering the inner cavity of the crushing box 31 fall on the tooth plate 38;

[0091] Next, the drive motor 22 rotates to drive the installation shaft in the drive disk assembly 32 to rotate, so that the drive disk in the drive disk assembly 32 moves the installation plate 34 through the rotating plate 33. During the movement of the installation plate 34, the installation blocks 35 on both sides of the installation plate 34 drive the installed extrusion components 36 to move towards one side of the tooth plate 38, pre-crushing the materials falling on the tooth plate 38;

[0092] Then, during the process of the extrusion member 36 moving towards the side away from the toothed plate 38, due to the action of the rack 39 and the flipping block 363, the mounting rod 361 rotates unidirectionally, so that the mounting rod 361 drives the flipping block 363 to rotate, causing a set of toothed plates 364 on the outer surface of the flipping block 363 that have just come into contact with the material to rotate by a certain angle, switching to a new set of toothed plates 364 corresponding to the toothed plate 38. When the mounting plate 34 moves again, the rack 39 cannot make the flipping block 363 drive the mounting rod 361 to rotate, enabling the newly switched set of toothed plates 364 and the toothed plate 38 to crush the material;

[0093] Through the reciprocating movement of the mounting plate 34, the rack 39 and the toothed ring 362 cooperate, causing the flipping block 363 to drive the toothed plates 364, and cyclically switching the toothed plates 364 on each surface of the flipping block 363, reducing the wear of a set of toothed plates 364 caused by long-term continuous use, increasing the service life of the toothed plates 364, thereby reducing the downtime for frequently replacing components and improving the production efficiency of the device;

[0094] The device can extend the time for the material to enter the impact crusher body 10 by setting the pre-screening member 20, indirectly affecting the speed of the material entering the impact crusher body 10, avoiding material accumulation or local over-crushing. In addition, it can also pre-screen the pre-crushed material, reducing the ineffective crushing of the impact crusher body 10 and reducing the wear of the device;

[0095] The pre-crushed material moves from the inclined plate 37, enters the inner cavity of the installation box 21 through the discharge port on the crushing box 31 and the communication groove 23, and then enters the inner cavity of the installation ring 241 from the feed groove 242 and lands on the feeding sieve plate 254. The connecting shaft 251 rotates with the output end of the driving motor 22, causing the feeding sieve plate 254 to drive the crushed material to rotate in the inner cavity of the installation ring 241, thereby extending the time for the material to enter the impact crusher body 10. The feeding sieve plate 254 drives the material to fall from the discharge groove 243 onto the spiral guide frame 26 between the baffle groove 27 and the side wall of the installation box 21. The spiral guide frame 26 rotates with the driving motor 22, enabling the material to enter the impact crusher body 10 evenly distributed, avoiding eccentric load impact;

[0096] In addition, during the rotation of the feeding sieve plate 254, the pre-crushed materials can be screened. By contacting a number of arc-shaped protrusions 244 on the arc-shaped sieve plate 245 during the rotation of the feeding sieve plate 254, the feeding sieve plate 254 can reciprocally shake during rotation, further improving the screening effect of the device. In addition, when the feeding sieve plate 254 is in a vertical state and the materials are located below the inner cavity of the arc-shaped sieve plate 245, during the continuous rotation of the feeding sieve plate 254, the adjacent feeding sieve plates 254 will push the materials to move, and the arc-shaped sieve plate 245 can also be used to screen the materials, increasing the screening path, improving the screening effect of the device, and reducing the ineffective crushing of the impact crusher body 10;

[0097] The device can perform secondary screening on the finished products through the provided screening component 40, enabling unqualified material particles to be crushed a second time and improving the quality of the products produced by the device;

[0098] The materials passing through the spiral guide frame 26 fall into the input end of the impact crusher body 10. The finished products discharged after being crushed by the impact crusher body 10 fall on the upper side of the corrugated sieve plate 45 through the two arc plates 43 inside the fixed frame 42. Due to the action of the two vibration components 44, the corrugated sieve plate 45 vibrates to screen the sand-making finished products. The qualified particles fall on the belt conveyor 11 below the corrugated sieve plate 45 and are conveyed to the finished product area. The unqualified particles are conveyed into the inner cavity of the collection box 46 through the corrugated sieve plate 45, then slide into the input end of the spiral conveyor 50 through the guide chute 47 and are conveyed to the input end of the impact crusher body 10 for secondary crushing, thereby reducing the unqualified particles in the finished products and improving the quality of the products.

[0099] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A sand-making device for manufactured sand, comprising a counterattack crusher body (10) and a fixing frame (12) for installing the counterattack crusher body (10), characterized in that: On the upper side of the input end of the impact crusher body (10), a pre-screening component (20) is fixed, and a pre-crushing component (30) is fixed on one side of the pre-screening component (20); The pre-crushing component (30) includes a crushing box (31). An installation plate (34) is slidably connected to the inner cavity of the crushing box (31). A plurality of installation blocks (35) are fixed on both sides of the installation plate (34). An extrusion component (36) is rotatably connected between two installation blocks (35) on the same straight line. A toothed plate (38) adapted to the extrusion component (36) is fixed in the inner cavity of the crushing box (31); The pre-screening component (20) includes an installation box (21). A circular screening component (24) is fixed in the inner cavity of the installation box (21). A driving motor (22) is fixed on one side of the installation box (21). A feeding component (25) that rotates in the inner cavity of the circular screening component (24) is fixed to the output end of the driving motor (22). A conveyor is provided in the inner cavity of the installation box (21); Through the action of the plurality of extrusion components (36) and the toothed plate (38), the materials can be pre-crushed. Through the feeding component (25), the crushed materials can be conveyed to the impact crusher body (10) after rotating inside the circular screening component (24). During the rotation of the feeding component (25), the materials can also be pre-screened.

2. The sand making equipment for manufactured sand according to claim 1, characterized in that, The pre-crushing component (30) further includes a feeding port on the upper side of the crushing box (31). A plurality of installation grooves (351) adapted to the installation blocks (35) are opened on both sides of the crushing box (31).

3. The sand-making equipment for manufactured sand according to claim 1, characterized in that A transmission disc assembly (32) is provided on one side of the crushing box (31). An eccentric rotating plate (33) is rotatably installed on one side of the transmission disc assembly (32). The side of the rotating plate (33) away from the transmission disc assembly (32) is connected to the installation plate (34) through a U-shaped frame.

4. The sand-making equipment for manufactured sand according to claim 1, wherein An inclined plate (37) is fixed in the inner cavity of the crushing box (31) below the toothed plate (38), and a discharge port adapted to the inclined plate (37) is opened on one side of the crushing box (31).

5. The sand making equipment for manufactured sand according to claim 1, characterized in that, A plurality of racks (39) adapted to the extrusion component (36) are fixed on one side of the crushing box (31). The extrusion component (36) includes an installation rod (361) rotatably installed on the installation block (35). A toothed ring (362) is installed on one side of the installation rod (361) through a one-way bearing. The toothed ring (362) is engaged with the rack (39) on the same side. A turning block (363) is fixed on the outer surface of the installation rod (361). A plurality of toothed tooth plates (364) are provided on the outer surface of the turning block (363).

6. The sand-making equipment for manufactured sand according to claim 3, characterized in that, A communication groove (23) is opened on one side of the installation box (21). A baffle groove (27) is fixed to the bottom wall of the inner cavity of the installation box (21). A spiral diversion frame (26) that rotates between the side wall of the installation box (21) and the baffle groove (27) is rotatably installed in the inner cavity of the installation box (21).

7. The sand making equipment for manufactured sand according to claim 6, characterized in that, The output end of the driving motor (22) is connected to the installation shaft of the transmission disc assembly (32) through a belt. The output end of the driving motor (22) is connected to the installation shaft of the spiral diversion frame (26) through a belt.

8. The sand-making equipment for manufactured sand according to claim 1, characterized in that, The feeding component (25) includes a connecting shaft (251) fixed to the output end of the driving motor (22). A fixing ring (252) is fixed to the outer surface of the connecting shaft (251). A plurality of sliding grooves (253) are formed in the outer surface of the fixing ring (252). A feeding sieve plate (254) is slidably mounted in the inner cavity of each of the plurality of sliding grooves (253) through a spring.

9. The sand making equipment for manufactured sand according to claim 1, characterized in that, The circular screening component (24) includes a mounting ring (241). A feeding groove (242) adapted to the inclined plate (37) is formed in the outer surface of the mounting ring (241). A discharge groove (243) is formed in the outer surface of the mounting ring (241). An arc-shaped sieve plate (245) is inlaid on the outer surface of the mounting ring (241). A plurality of arc-shaped protrusions (244) are fixed to the inner surface of the arc-shaped sieve plate (245). The plurality of arc-shaped protrusions (244) are adapted to the feeding sieve plate (254).

10. The sand-making equipment for manufactured sand according to claim 1, characterized in that, A screening component (40) is fixed to the lower side of the output end of the impact crusher body (10). A matching screw conveyor (50) is fixed to one side of the screening component (40). The output end of the screw conveyor (50) extends into the input end of the impact crusher body (10). A belt conveyor (11) is arranged below the screening component (40). The screening component (40) includes a screening box (41). A fixing frame (42) is fixed to the upper side of the screening box (41). Two symmetrical arc plates (43) are fixed in the inner cavity of the fixing frame (42). Vibration components (44) are arranged on both sides of the screening box (41). A wavy sieve plate (45) is fixed between the two vibration components (44). A collection box (46) adapted to the wavy sieve plate (45) is fixed to one side of the screening box (41). A guide groove (47) is formed in the inner cavity of the collection box (46). The guide groove (47) communicates with the input end of the screw conveyor (50).

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