A material crushing production line

Abstract

The application provides a material crushing production line, which comprises a first crushing device and a second crushing device, both of which are arranged below the ground along a vertical direction and are arranged along a first horizontal direction, a first feeding port of the first crushing device is communicated with the ground, a second feeding port of the second crushing device extends out of the ground, two elevators are arranged between the first crushing device and the second crushing device, the first elevator is used for conveying the material crushed by the first crushing device into the second crushing device, and the second elevator is used for conveying finished material; a screening device is arranged above the second crushing device, and a plurality of storage bins arranged along a second horizontal direction are arranged at the end of the conveying direction of the screening device; by arranging the first crushing device below the ground along the vertical direction, feeding is completed by gravity, and feeding equipment is not needed, meanwhile, the second crushing device is functionally integrated, and the problem of many processes in the traditional production line is solved; by reasonably arranging the crushing device, the screening device and the storage bin, the floor area of the production line is reduced.

Description

Technical Field

[0001] This application relates to the field of material crushing and shaping technology, and in particular to a material crushing production line. Background Technology

[0002] Currently, the crushing and screening production lines widely used in the mining industry generally adopt a multi-stage, decentralized process architecture. Taking material production as an example, a traditional production line typically includes more than twelve stages, such as feeding, coarse crushing, primary transfer, secondary crushing, secondary transfer, shaping, tertiary transfer, sand making, quaternary transfer, screening, quinary transfer, and finished product storage. To connect the equipment of each decentralized stage, the production line needs to be equipped with more than twenty belt conveyors for material transfer, and the transfer distance between equipment is often more than eighty meters.

[0003] Traditional production lines occupy a large area due to their numerous processes and dispersed equipment. Typically, a material production line with an annual output of one million tons occupies over 1,500 square meters. This long-process, large-area layout has several technical drawbacks in practical applications. First, long-distance material transfer leads to high energy consumption, with numerous belt conveyors operating continuously resulting in huge electricity consumption. Second, the numerous process connections mean that a malfunction in any belt conveyor or transfer silo can cause a complete line shutdown, affecting production continuity. Third, the large footprint requires significant factory space, making deployment difficult in certain areas. Therefore, reducing process steps and minimizing the footprint is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0004] The purpose of this application is to address the above problems by providing a material crushing production line, comprising: The first crushing device is vertically disposed below the ground, and the first feed inlet of the first crushing device is connected to the ground, for crushing the raw material to a first particle size range. The second crushing device is located on one side of the first crushing device along the first horizontal direction. The second crushing device is set vertically below the ground. The second feed port of the second crushing device extends out of the ground. It is used to crush the material crushed by the first crushing device into finished materials containing multiple particle sizes. A first elevator and a second elevator are disposed between the first crushing device and the second crushing device, and both extend vertically; the first elevator is used to transport the material crushed by the first crushing device to the second crushing device, and the second elevator is used to transport the finished material. A screening device is provided above the second crushing device. Multiple storage bins are provided at the end of the conveying direction of the screening device. The screening device is used to receive the finished material output by the second elevator and convey it to each of the storage bins according to different particle size. The multiple storage bins are arranged along a second horizontal direction, which is perpendicular to the first horizontal direction.

[0005] According to the technical solutions provided in certain embodiments of this application, the second crushing device includes a plurality of crushing assemblies, wherein the plurality of crushing assemblies are a primary crushing assembly and at least one secondary crushing assembly arranged in a vertical direction, and each crushing assembly includes a crushing module, wherein a second crushing chamber is provided in the crushing module, and each second crushing chamber is connected in a vertical direction to form a main crushing path; The secondary crushing assembly is provided with a diversion channel, which is located on one side of the crushing module. The diversion channels are connected in the vertical direction to form a diversion path. In this process, after the material is crushed by the primary crushing assembly, part of the material falls along the main crushing path and is discharged after being crushed by each of the secondary crushing assemblies in sequence, while the other part of the material that does not enter the second crushing chamber of the current secondary crushing assembly falls and is discharged along the diversion path.

[0006] According to the technical solutions provided in some embodiments of this application, the crushing assembly further includes an upper cover and a base that are fixed to each other. The upper cover is provided with a first through hole, and the base is provided with a second through hole. The second through hole and the first through hole are arranged in a vertical direction corresponding to each other. The crushing module is disposed between the upper cover and the base, and the second crushing chamber is located between the first through hole and the second through hole; The second through hole of the current stage crushing assembly is connected to the first through hole of the next stage crushing assembly to form the main crushing path.

[0007] According to the technical solutions provided in certain embodiments of this application, the base of the secondary crushing assembly is provided with a third through hole, the third through hole is located on one side of the second through hole, and each of the third through holes is correspondingly arranged in the vertical direction; the upper cover adjacent to the third through hole is provided with a fourth through hole, the fourth through hole is located on one side of the first through hole and is correspondingly connected to the third through hole to form the diversion path; There is a first gap between the crushing module and the upper cover. When the second crushing chamber of the secondary crushing assembly is filled, the material that has not entered the second crushing chamber overflows through the first gap and then falls and is discharged through the diversion path.

[0008] According to the technical solutions provided in certain embodiments of this application, the crushing module includes: A motion unit is disposed between the upper cover and the base. The motion unit has at least one installation space extending in a vertical direction, and a third breaking tooth is arranged circumferentially on the inner wall of the installation space. A rotor unit is disposed within the installation space and together with the motion unit forms the second crushing chamber. The inner diameter of the second crushing chamber gradually decreases from top to bottom. A fourth crushing tooth is arranged circumferentially on the outer wall of the rotor unit. The rotor unit is used to drive the fourth crushing tooth to rotate relative to the motion unit in a vertical direction to grind the material in the second crushing chamber.

[0009] According to the technical solutions provided in certain embodiments of this application, a support shaft and a hydraulic cylinder are fixed between the upper cover and the base; The support shaft extends vertically, and the motion unit is sleeved on multiple sets of the support shafts. The motion unit has a first gap with the upper cover and a second gap with the base. The drive end of the hydraulic cylinder is fixed to the motion unit and is used to drive the motion unit to reciprocate along the support shaft at a set stroke and a set frequency.

[0010] According to the technical solutions provided in certain embodiments of this application, the outer diameter of the rotor unit gradually increases from top to bottom; The hydraulic cylinder is also used to adjust the lowest point of the set stroke to change the minimum distance between the inner wall of the moving unit and the outer wall of the rotor unit when the moving unit is at the lowest point, thereby adjusting the size of the bottom outlet of the second crushing chamber and thus changing the specifications of the discharged material.

[0011] According to the technical solutions provided in certain embodiments of this application, the number of installation spaces is set to three, and the three installation spaces are evenly distributed around the central axis of the motion unit.

[0012] According to the technical solutions provided in certain embodiments of this application, the rotor unit includes: A driving component is disposed between the upper cover and the base. A second central shaft is passed through the driving component. The second central shaft extends in a vertical direction and its two ends are fixed to the upper cover and the base, respectively. The second wear-resistant component is sleeved on the outer periphery of the driving component and is used to rotate around the second central axis under the drive of the driving component. The fourth crushing teeth are arranged circumferentially on the outer wall of the second wear-resistant component.

[0013] According to the technical solutions provided in certain embodiments of this application, the first crushing device includes: The first frame has a first discharge port at its bottom and an outer frame body on its top. The outer frame body has a first inlet port at its top and first crushing teeth arranged circumferentially on its inner wall. An internal crushing assembly is disposed within the outer frame body. The internal crushing assembly includes a first central shaft coaxially disposed with the outer frame body and a crushing body sleeved on the first central shaft. Second crushing teeth are arranged circumferentially on the outer wall of the crushing body. A first crushing cavity is formed between the crushing body and the outer frame body. The internal crushing assembly further includes a first driving structure and a second driving structure. The first driving structure is used to drive the crushing body to reciprocate relative to the outer frame body in a vertical direction. The second driving structure is used to drive the crushing body to rotate relative to the outer frame body around the first central shaft. After the material enters the first crushing chamber through the first feed inlet, the second crushing tooth is driven to reciprocate along the vertical direction and rotate around the first central axis through the cooperation of the first driving structure and the second driving structure, so that the second crushing tooth and the first crushing tooth form a compound crushing motion, thereby crushing the material.

[0014] According to the technical solutions provided in certain embodiments of this application, the inner diameter of the outer frame body gradually decreases from top to bottom, the outer diameter of the crushing body gradually decreases from top to bottom, and the inner diameter of the first crushing chamber gradually decreases from top to bottom.

[0015] According to the technical solutions provided in certain embodiments of this application, the first driving structure includes: A hydraulic drive rod and a hydraulic drive cylinder are both sleeved on the first central shaft and are coaxial with the first central shaft; the bottom of the hydraulic drive rod is slidably connected to the hydraulic drive cylinder, and the top of the hydraulic drive rod is connected to the crushing body; A hydraulic oil chamber is formed between the hydraulic drive cylinder, the hydraulic drive rod, and the first central shaft. By injecting or draining hydraulic oil into the hydraulic oil chamber, the hydraulic drive rod is driven to move vertically, thereby driving the crushing body to move vertically.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: This application provides a material crushing production line, including a first crushing device and a second crushing device. Both the first and second crushing devices are vertically arranged below the ground. The first inlet of the first crushing device is connected to the ground and is used to crush the raw material to a first particle size range. The second crushing device is located on one side of the first crushing device along a first horizontal direction, and the second inlet of the second crushing device extends out of the ground and is used to crush the material crushed by the first crushing device into finished materials containing multiple particle sizes. A first elevator and a second elevator are provided between the first and second crushing devices. Both the first and second elevators extend vertically. The first elevator is used to transport the material crushed by the first crushing device to the second crushing device, and the second elevator is used to transport the finished material. A screening device is provided above the second crushing device. Multiple storage bins are provided at the end of the conveying direction of the screening device. The screening device is used to receive the finished material output by the second elevator and transport it to each storage bin according to different particle sizes. The multiple storage bins are arranged along a second horizontal direction, which is perpendicular to the first horizontal direction. By vertically placing the first crushing device below the ground and connecting its first inlet to the ground, the raw material is unloaded from the ground and enters the first crushing device directly by gravity, eliminating the need for feeding equipment. Meanwhile, the second crushing device can produce finished materials of various particle sizes, integrating the functions of multiple devices such as crushing, shaping, and sand making in a traditional production line. This solves the problem of numerous processes in traditional production lines, eliminating the need for transfer between crushing, shaping, and sand making processes. Consequently, it optimizes the large number of belt conveyors in traditional production lines, avoiding the high energy consumption caused by long-distance horizontal transfer in traditional production lines and reducing the overall energy consumption of the production line. By arranging two crushing devices below the ground along the first horizontal direction, setting the screening device above the second crushing device, and arranging multiple storage bins along the second horizontal direction perpendicular to the first horizontal direction, and using an elevator to transfer materials in the vertical direction, the space occupied by the entire production line in the horizontal direction is compressed, thus reducing the floor area of ​​the production line.

[0017] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a material crushing production line provided in an embodiment of this application; Figure 2 This is another structural schematic diagram of a material crushing production line provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a first crushing device in a material crushing production line provided in an embodiment of this application; Figure 4 This is another structural schematic diagram of a first crushing device in a material crushing production line provided in an embodiment of this application; Figure 5 This is a cross-sectional schematic diagram of a first crushing device in a material crushing production line provided in an embodiment of this application; Figure 6 A cross-sectional schematic diagram of an internal crushing component in a material crushing production line provided in an embodiment of this application; Figure 7 A schematic diagram of the structure of a first support and a second support of a material crushing production line provided in this application embodiment; Figure 8 This application provides a schematic diagram of the structure of an electromagnetic iron removal component in a material crushing production line. Figure 9 This is a schematic diagram of the structure of a second crushing device in a material crushing production line provided in an embodiment of this application; Figure 10 for Figure 9 Enlarged view of section A; Figure 11 This is a cross-sectional schematic diagram of a second crushing device in a material crushing production line provided in an embodiment of this application; Figure 12 for Figure 11 Enlarged view of section B; Figure 13 A schematic diagram of the structure of the upper cover of the primary crushing assembly of a material crushing production line provided in this application embodiment; Figure 14 A schematic diagram of the base of a primary crushing assembly in a material crushing production line provided in this application embodiment; Figure 15 A schematic diagram of the structure of the upper cover of a three-stage crushing assembly in a material crushing production line provided in this application embodiment; Figure 16 A schematic diagram of the structure of the base of a secondary crushing assembly in a material crushing production line provided in this application embodiment; Figure 17 This is a schematic diagram of the motion unit of a material crushing production line provided in an embodiment of this application; Figure 18 This is a schematic diagram of the rotor unit of a material crushing production line provided in an embodiment of this application.

[0020] The text labels in the image represent: 1. First crushing device; 2. Second crushing device; 3. First elevator; 4. Second elevator; 5. Screening device; 6. Storage silo; 7. Dust removal equipment; 8. Central control room; 9. Overhead crane; 11. First support base; 12. Outer frame main body; 13. Support cylinder; 14. First feed hopper; 15. First central shaft; 16. Crushing body; 17. First drive structure; 121. First crushing tooth; 122. First support member; 123. Second support member; 124. Electromagnetic iron removal member; 131. Support rod; 161. Second crushing tooth; 162. First distribution cone; 171. Hydraulic drive rod body; 172. Hydraulic drive cylinder body; 173. Wear-resistant washer; 21. Crushing assembly; 22. Second support base; 23. Second feed hopper; 211. Top cover; 212. Base; 213. Motion unit; 214. Rotor unit; 215. Second distribution cone; 216. Baffle plate; 221. Support shaft; 222. Hydraulic cylinder; 223. Support beam; 224. Second central shaft; 2111. First through hole; 2112. Fourth through hole; 2113. First baffle; 2114. Second baffle; 2121. Second through hole; 2122. Third through hole; 2123. Third baffle; 2131. Motion frame; 2132. First wear-resistant component; 2141. Drive component; 2142. Second wear-resistant component; 2143. Central bushing; 2144. Shock-absorbing bushing; 101. Primary crushing assembly; 102. Secondary crushing assembly; 103. Tertiary crushing assembly; 104. Quaternary crushing assembly. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0022] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0023] As mentioned in the background section, in order to solve the problems existing in the prior art, this embodiment provides a material crushing production line, including: The first crushing device 1 is vertically positioned below the ground. The first feed inlet of the first crushing device 1 is connected to the ground and is used to crush the raw material to a first particle size range. The second crushing device 2 is located on one side of the first crushing device 1 along the first horizontal direction. The second crushing device 2 is set below the ground in the vertical direction. The second feed port of the second crushing device 2 extends out of the ground and is used to crush the material after the first crushing device 1 into finished materials containing multiple particle sizes. The first elevator 3 and the second elevator 4 are located between the first crushing device 1 and the second crushing device 2, and both extend in a vertical direction; the first elevator 3 is used to transport the material crushed by the first crushing device 1 to the second crushing device 2, and the second elevator 4 is used to transport the finished material. The screening device 5 is located above the second crushing device 2. Multiple storage bins 6 are provided at the end of its conveying direction. The screening device 5 is used to receive the finished material output by the second elevator 4 and convey it to each storage bin 6 according to different particle size. Multiple storage bins 6 are arranged along the second horizontal direction, which is perpendicular to the first horizontal direction.

[0024] like Figure 1 and Figure 2 As shown, the first horizontal direction is Figure 1 The left and right directions, the second horizontal direction is Figure 1 In the direction perpendicular to the paper, the site of the material crushing production line is a concrete-poured ground with two foundation pits. These pits are positioned along a first horizontal direction and are used to house the first crushing device 1 and the second crushing device 2, respectively. The two crushing devices are vertically arranged. The first inlet of the first crushing device 1 is connected to the ground, while the second inlet of the second crushing device 2 extends above the ground. The first outlet of the first crushing device 1 and the second outlet of the second crushing device 2 are both located below the ground. A multi-level working platform is installed above the two crushing devices. A dust removal device 7 and a central control room 8 are installed on the first working platform. The dust removal device 7, located above the first crushing device 1, is used to eliminate dust generated during material crushing and conveying. The central control room 8 is located above the second crushing device 2 and is used to control the operation of the material crushing production line. A crane 9 is installed under the first working platform. Two cranes 9 are respectively set for the first crushing device 1 and the second crushing device 2. The cranes 9 are used to lift the crushing devices to facilitate equipment installation and subsequent maintenance. The second working platform is located above the first working platform and is equipped with a screening device 5. The screening device 5 is located above the central control room 8. The discharge end of the screening device 5 is equipped with multiple belt conveyors, which are arranged radially. Each belt conveyor has a storage bin 6 at the end of its conveying end. An elevator is also installed on one side of the working platform to transport personnel and facilitate their access to the central control room 8 to control the operation of the production line. The vertical height of the feed end of the first elevator 3 is lower than the first discharge port, and the vertical height of the discharge end of the first elevator 3 is higher than the second feed port. The vertical height of the feed end of the second elevator 4 is lower than the second discharge port, and the vertical height of the discharge end of the second elevator 4 is higher than the feed end of the screening device 5. Simultaneously, chutes are respectively installed between the crushing device, the elevators, and the screening device 5. The chutes are inclined to guide the material to be transported between the devices by gravity. A transport vehicle carrying the raw material travels to above the first feed port. At the unloading port of the transport vehicle, the raw material enters the first crushing device 1 through the first feed port under the action of gravity for crushing. The first crushing device 1 crushes the raw material to a first particle size range, such as 90mm-100mm. It should be noted that in this embodiment, the specific value of the first particle size range is only for explanation and does not have a limiting effect on this embodiment. In actual production, the first... The output material size of the crushing device 1 and the second crushing device 2 needs to be set according to factors such as material hardness and customer requirements. The material crushed by the first crushing device 1 flows to the feed end of the first elevator 3 through the first discharge port. After being conveyed vertically by the first elevator 3, it flows to the second feed port through the discharge end of the first elevator 3. The second crushing device 2 crushes the material into finished materials with multiple particle sizes. The second crushing device 2 integrates multiple functions such as crushing, shaping and sand making. It can crush the material to 5mm, 10mm, 20mm and 35mm respectively. At the same time, the finished materials of the above multiple particle sizes can be discharged from the second discharge port and flow to the feed end of the second elevator 4. After being conveyed vertically by the second elevator 4, the finished materials fall into the feed end of the screening device 5 through the discharge end of the second elevator 4. After being screened by the screening device 5, the finished materials of different particle sizes are conveyed to different storage bins 6 by different belt conveyors for storage.

[0025] By vertically placing the first crushing device 1 below the ground and connecting its first inlet to the ground, the raw material is unloaded from the ground and enters the first crushing device 1 directly by gravity, eliminating the need for feeding equipment. Meanwhile, the second crushing device 2 can produce finished materials of various particle sizes, integrating the functions of multiple devices such as crushing, shaping, and sand making in the traditional production line. This solves the problem of numerous processes in the traditional production line, eliminating the need for transfer between crushing, shaping, and sand making processes. Consequently, it can optimize the large number of belt conveyors in the traditional production line, avoiding the high energy consumption problem caused by long-distance horizontal transfer in the traditional production line and reducing the overall energy consumption of the production line. By arranging two crushing devices below the ground along the first horizontal direction, setting the screening device 5 above the second crushing device 2, and arranging multiple storage bins 6 along the second horizontal direction perpendicular to the first horizontal direction, and using an elevator to transfer materials in the vertical direction, the space occupied by the entire production line in the horizontal direction is compressed, thus reducing the floor area of ​​the production line.

[0026] In a preferred embodiment, the first crushing device 1 includes: The frame has a first discharge port at the bottom and an outer frame body 12 on the frame. The top of the outer frame body 12 has a first inlet port and first crushing teeth 121 are arranged circumferentially on the inner wall of the outer frame body 12. An internal crushing assembly is disposed within the outer frame body 12. The internal crushing assembly includes a first central shaft 15 coaxially arranged with the outer frame body 12 and a crushing body 16 sleeved on the first central shaft 15. Second crushing teeth 161 are arranged circumferentially on the outer wall of the crushing body 16. A first crushing chamber is formed between the crushing body 16 and the outer frame body 12. The internal crushing assembly also includes a first driving structure 17 and a second driving structure. The first driving structure 17 is used to drive the crushing body 16 to reciprocate in the vertical direction relative to the outer frame body 12. The second driving structure is used to drive the crushing body 16 to rotate around the first central shaft 15 relative to the outer frame body 12. After the material enters the first crushing chamber through the first feed inlet, the second crushing tooth 161 is driven to reciprocate in the vertical direction and rotate around the first central axis 15 through the cooperation of the first drive structure 17 and the second drive structure, so that the second crushing tooth 161 and the first crushing tooth 121 form a compound crushing motion, thereby crushing the material.

[0027] like Figure 3-8As shown, the frame includes a first support base 11, which can be made of high-strength reinforced concrete. The first support base 11 is located at the bottom of the foundation pit and serves as the supporting base for the first crushing device 1. The first support base 11 has a first discharge port. A support cylinder 13 is provided on the first support base 11. The upper and lower ends of the support cylinder 13 are connected to the outer frame body 12 and the first support base 11 through flanges, respectively. Multiple support rods 131 are provided between the flanges at the upper and lower ends of the support cylinder 13. The multiple support rods 131 are evenly arranged around the circumference of the support cylinder 13. The outer frame body 12 has a frame structure, which can provide space for the internal crushing components and also serves as the mounting carrier for the first crushing teeth 121. The top of the outer frame body 12 has a first feed hopper 14, and the top of the first feed hopper 14 has a first inlet. The bottom of the outer frame body 12 is connected to the first discharge port through the support cylinder 13, forming a crushing and conveying channel for materials. The raw material enters from the first inlet. The material enters the first crushing chamber and is discharged from the first discharge port after crushing. The support rod 131 and the support cylinder 13 together form a cage-like reinforcement structure, which can effectively resist the tensile / compressive load caused by the axial vibration of the first crushing device 1 during operation and avoid axial deformation of the support cylinder 13. On the other hand, it can constrain the radial sway of the support cylinder 13 and ensure that the central axis of the support cylinder 13 always remains vertical, thereby ensuring the coaxiality of the outer frame body 12 and the inner crushing component. It can also resist the counter-torque generated when the crushing body 16 rotates, avoid torsional offset of the frame, and improve the overall operating stability of the device. The first crushing tooth 121 is set on the inner side wall of the outer frame body 12 and is evenly arranged along its circumference. As a fixed crushing component for crushing operation, it is used to cooperate with the second crushing tooth 161 of the inner crushing component to complete the material extrusion and impact crushing. The circumferential arrangement design allows the material to contact the crushing tooth in all directions in the first crushing chamber, improving the crushing uniformity.

[0028] The first central shaft 15 serves as the main support structure for the internal crushing assembly. It is coaxially arranged with the outer frame body 12, providing guidance for the movement of the entire internal crushing assembly and ensuring the accuracy of its axial reciprocating and circumferential rotation. The crushing body 16 is fitted onto the first central shaft 15, and its outer wall forms a first crushing chamber with the inner wall of the outer frame body 12. Within this chamber, the material is crushed by the combined compression and impact of the first crushing teeth 121 and the second crushing teeth 161. The second crushing teeth 161 are located on the outer wall of the crushing body 16 and are evenly arranged circumferentially. The moving second crushing teeth 161 and the fixed first crushing teeth 121 form a dynamic and static cooperation, applying force to crush the material through their combined motion. Here, both the first crushing teeth 121 and the second crushing teeth 161 are wear-resistant strip structures. The first drive structure 17 is located on the first central shaft 15. Between the first drive structure 121 and the second drive structure 16, the first drive structure 121 is used to drive the first drive structure 16 to reciprocate along the first central axis 15, thereby driving the second crushing tooth 161 to reciprocate axially, so as to realize the axial compression and impact crushing of the material in the first crushing chamber. The second drive structure can be a hydraulic motor. The drive end of the second drive structure is connected to the end of the crushing body 16, and is used to drive the crushing body 16 to rotate around the first central axis 15, thereby driving the second crushing tooth 161 to rotate synchronously, so as to realize the circumferential shearing and grinding crushing of the material in the first crushing chamber. Through the coordinated cooperation of the first drive structure 121 and the second drive structure, the second crushing tooth 161 can realize the composite motion of axial reciprocating motion and circumferential rotation at the same time, so that the first crushing tooth 121 and the second crushing tooth 161 form a relative composite crushing motion, ultimately realizing the multi-dimensional crushing of the material.

[0029] By setting the outer frame body 12 and the inner crushing component on the frame to cooperate with each other, a first crushing chamber is formed between the outer frame body 12 and the crushing body 16. At the same time, the crushing body 16 is driven to reciprocate along the first central axis 15 by the first drive structure 17, and the crushing body 16 is driven to rotate around the first central axis 15 by the second drive structure. This realizes that the second crushing tooth 161 moves in the axial reciprocating motion and rotates in the circumferential direction, so that the first crushing tooth 121 and the second crushing tooth 161 form a compound motion mode, so that the material entering the first crushing chamber can be subjected to multi-dimensional crushing action, effectively improving the material crushing efficiency and the uniformity of crushed particle size. Moreover, the structural design of the first central axis 15 and the outer frame body 12 being coaxially set, combined with the split drive structure layout, also enhances the overall structural rigidity of the equipment, can better adapt to the crushing conditions of high-frequency vibration, reduce the occurrence of problems such as overall displacement and component loosening, and improve the stability and reliability of the device under high-frequency impact loads.

[0030] Furthermore, the outer frame body 12 is also provided with a first support member 122 and a second support member 123. The first support member 122 is located inside the outer frame body 12 near its bottom, and the second support member 123 is located at the top of the outer frame body 12. The first support member 122 and the second support member 123 cooperate to install the internal crushing component. The connection point between the first support member 122 and the frame is the bottom load-bearing node of the outer frame body 12, which has strong structural rigidity. Therefore, placing the first support member 122 at this position can provide a stable support foundation for the internal crushing component and prevent the lower end of the first central shaft 15 from shifting or shaking during high-frequency vibration. At this position, it is adjacent to the bottom opening of the outer frame body 12, does not occupy the space of the first crushing chamber and the discharge channel, and avoids interfering with the material flow; the second support member 123 is set at the top of the outer frame body 12, which can limit the upper end of the inner crushing component, and can also adapt to the feeding requirements through structural design, reserving a material falling channel without affecting the feeding efficiency; the first support member 122 and the second support member 123 provide upper and lower end constraints for the first central axis 15, ensuring the stability of the compound movement of the inner crushing component; here, the specific structure of the first support member 122 and the second support member 123 is not limited, as long as the above functions can be achieved.

[0031] Furthermore, the first support member 122 is equipped with an electromagnetic iron separator 124. The electromagnetic iron separator 124 can be an electromagnetic separator, and it is located at the bottom opening of the outer frame body 12. After the material is squeezed, sheared, and ground in the first crushing chamber, the large magnetic metal pieces originally wrapped in the material will be crushed into small iron filings / particles. As the crushed material falls, the electromagnetic iron separator 124 is powered on to generate a strong magnetic field, forming a magnetic adsorption area in the bottom opening area of ​​the outer frame body 12. When the crushed material falls from the first crushing chamber to the first discharge port, the magnetic metal impurities in it will be adsorbed onto the surface of the electromagnetic iron separator 124 under the action of the magnetic field force. When the equipment is stopped or during regular maintenance, the power supply to the electromagnetic iron separator 124 is cut off, the magnetic field disappears, and the adsorbed metal impurities will automatically fall off. The staff can collect and clean them to reset the electromagnetic iron separator 124 for subsequent operation.

[0032] In a preferred embodiment, the inner diameter of the outer frame body 12 gradually decreases from top to bottom, the outer diameter of the crushing body 16 gradually decreases from top to bottom, and the inner diameter of the first crushing chamber gradually decreases from top to bottom.

[0033] like Figure 5As shown, the inner contour of the outer frame body 12 is approximately trumpet-shaped, and the outer contour of the crushing body is also approximately trumpet-shaped. The gradient ratio between the two can be set according to the actual situation to ensure that when the crushing body 16 performs axial reciprocating and circumferential rotation, the fitting gap between the second crushing tooth 161 and the first crushing tooth 121 on its outer wall is always uniformly and gradually changed, and there will be no problem of excessively large / small gaps in some areas. At the same time, the above design also makes the first crushing chamber form a gradually changing space that is wider at the top and narrower at the bottom, allowing the material to undergo a step-by-step crushing process from coarse crushing to fine crushing. Specifically, the inner diameter of the upper end of the first crushing chamber is large. After the raw material enters, under the combined motion of the second crushing tooth 161, it is first subjected to preliminary compression and shearing crushing. Large pieces of material are crushed into medium-sized particles, completing the initial crushing process. In the crushing stage, the material falls, and the inner diameter of the first crushing chamber gradually decreases. Medium-sized materials are subjected to stronger compression and grinding, and are further crushed into smaller-sized materials, completing the fine crushing stage. Finally, the inner diameter of the lower end of the first crushing chamber is the smallest. When the material moves to this point, it is subjected to high-precision shearing and grinding by the first and second crushing teeth, and is finally crushed into materials that meet the particle size requirements, completing the fine crushing stage. This top-down, step-by-step crushing process allows the material to be crushed gradually, avoiding the problems of large pieces of material being directly subjected to strong pressure and easily getting stuck in traditional crushing chambers, and small-sized materials being over-crushed and consuming a lot of energy. It not only improves crushing efficiency, but also ensures the uniformity of particle size of the finished material, while reducing the energy consumption of the device and the wear of the crushing teeth.

[0034] In a preferred embodiment, the first driving structure 17 includes: The hydraulic drive rod 171 and the hydraulic drive cylinder 172 are both sleeved on the first central shaft 15 and are coaxial with the first central shaft 15; the bottom of the hydraulic drive rod 171 is slidably connected to the hydraulic drive cylinder 172, and the top of the hydraulic drive rod 171 is connected to the crushing body 16. A hydraulic oil chamber is formed between the hydraulic drive cylinder 172, the hydraulic drive rod 171, and the first central shaft 15. By injecting or draining hydraulic oil into the hydraulic oil chamber, the hydraulic drive rod 171 is driven to move vertically, thereby driving the crushing body 16 to move vertically.

[0035] like Figure 6As shown, the hydraulic drive cylinder 172 serves as the fixed base of the first drive structure 17. It is fixedly set relative to the first central shaft 15, providing support for the sliding of the hydraulic drive rod 171, and its position does not change with the driving action. The bottom of the hydraulic drive rod 171 is slidably connected to the bottom of the hydraulic drive cylinder 172. The lower end of the hydraulic drive rod 171 can slide axially back and forth along the inner side of the hydraulic drive cylinder 172. The coaxial arrangement of the hydraulic drive rod 171, the hydraulic drive cylinder 172, and the first central shaft 15 allows the hydraulic driving force to be transmitted axially along the first central shaft 15 without radial eccentricity, avoiding the displacement and shaking of the crushing body 16 during the driving process, and ensuring the straightness of the axial reciprocating motion of the crushing body 16.

[0036] The hydraulic drive rod 171 is fixedly connected to the crushing body 16 via a wear-resistant washer 173, which is also fitted onto the first central shaft 15. This serves two purposes: firstly, it allows the axial movement of the hydraulic drive rod 171 to be transmitted to the crushing body 16 without loss through the wear-resistant washer 173, causing the crushing body 16 to reciprocate axially synchronously; secondly, the wear-resistant washer 173 provides a buffer for the connection between the hydraulic drive rod 171 and the crushing body 16, dispersing the impact force from the high-frequency reciprocating motion and reducing wear at the connection point. A hydraulic oil chamber is formed between the hydraulic drive cylinder 172, the hydraulic drive rod 171, and the first central shaft 15. This hydraulic oil chamber forms a closed-loop hydraulic circuit with the intelligent hydraulic system via hydraulic pipes. The intelligent hydraulic system provides high-pressure hydraulic oil to the hydraulic oil chamber and controls the injection and discharge of hydraulic oil within the chamber, creating a pressure difference that pushes the hydraulic drive rod 171 to slide along the first central shaft 15, ultimately causing the crushing body 16 to reciprocate. Specifically, the intelligent hydraulic system includes at least a high-frequency response valve and an accumulator. The high-frequency response valve can be a servo valve or a proportional valve. When it is necessary to drive the crushing body 16 upward, the high-frequency response valve in the intelligent hydraulic system quickly acts, injecting high-pressure hydraulic oil into the hydraulic oil chamber through the hydraulic pipeline. The pressure inside the chamber rises sharply, forming an upward pressure difference, which in turn pushes the hydraulic drive rod 171 to slide upward along the hydraulic drive cylinder 172. The upward movement of the hydraulic drive rod 171 is transmitted to the crushing body 16 through the wear-resistant washer 173, causing the crushing body 16 to move upward synchronously along the first central axis 15. When it is necessary to drive the crushing body 16 downward, the high-frequency response valve quickly switches the passage, allowing the hydraulic oil in the hydraulic oil chamber to be quickly discharged and flow back to the intelligent hydraulic system. The pressure inside the chamber drops sharply. At this time, under the reaction force of the equipment's own gravity and the crushing condition, the hydraulic drive rod 171 slides downward along the hydraulic drive cylinder 172, causing the crushing body 16 to move downward synchronously.

[0037] By using a high-frequency response valve to control the injection and discharge of hydraulic oil at high speed, and in conjunction with the accumulator to absorb and release pressure shocks to maintain system pressure stability, the hydraulic drive rod 171 can achieve high-frequency up-and-down reciprocating sliding, thereby driving the crushing body 16 to complete high-frequency axial reciprocating motion along the first central axis 15, thus adapting to the crushing requirements of the equipment under high-frequency vibration conditions.

[0038] Furthermore, a first distribution cone 162 is provided between the crushing body 16 and the second support member 123. The first distribution cone 162 is approximately trumpet-shaped and is used to guide the material falling through the first feed inlet, so that the material falls evenly into the first crushing chamber. The first distribution cone 162 can prevent the falling material from staying on the surface and can slide quickly along the cone surface to the surrounding areas, avoiding the accumulation and agglomeration of material below the first feed inlet, and ensuring the continuity of feeding; at the same time, it can decompose the impact force of the vertical fall of the material into a radial component along the cone surface, reducing the impact force of the material directly hitting the crushing body 16 or the crushing parts, reducing the impact wear of the crushing parts, and avoiding the aggravation of local vibration of the equipment caused by the direct impact of large pieces of material.

[0039] In a preferred embodiment, the second crushing device 2 includes a plurality of crushing assemblies 21, which are a primary crushing assembly 101 arranged in a vertical direction and at least one secondary crushing assembly. Each crushing assembly 21 includes a crushing module, and a second crushing chamber is provided in the crushing module. Each second crushing chamber is connected in a vertical direction to form a main crushing path. The secondary crushing assembly is equipped with a diversion channel, which is located on one side of the crushing module. The diversion channels are connected vertically to form a diversion path. In this process, after the material is crushed by the primary crushing assembly 101, part of the material falls along the main crushing path and is discharged after being crushed by each secondary crushing assembly in sequence, while the other part of the material that does not enter the second crushing chamber of the current secondary crushing assembly falls and is discharged along the diversion path.

[0040] Furthermore, the crushing assembly 21 also includes an upper cover 211 and a base 212 that are fixed to each other. The upper cover 211 is provided with a first through hole 2111, and the base 212 is provided with a second through hole 2121. The second through hole 2121 and the first through hole 2111 are arranged in a vertical direction. The crushing module is located between the upper cover 211 and the base 212, and the second crushing chamber is located between the first through hole 2111 and the second through hole 2121. The second through hole 2121 of the current stage crushing assembly 21 is connected to the first through hole 2111 of the next stage crushing assembly 21 to form the main crushing path.

[0041] Furthermore, the base 212 of the secondary crushing assembly is provided with a third through hole 2122, which is located on one side of the second through hole 2121, and each third through hole 2122 is correspondingly arranged in the vertical direction; the upper cover 211 adjacent to the third through hole 2122 is provided with a fourth through hole 2112, which is located on one side of the first through hole 2111 and is correspondingly connected to the third through hole 2122 to form a diversion path; There is a first gap between the crushing module and the upper cover 211. When the second crushing chamber of the secondary crushing assembly is filled, the material that has not entered the second crushing chamber overflows through the first gap and then falls and is discharged through the diversion path.

[0042] like Figure 9-18 As shown, the second crushing device 2 includes a second support base 22, which is also made of high-strength reinforced concrete. The second support base 22 is located at the bottom of the foundation pit and serves as the landing support base for the second crushing device 2. Multiple crushing assemblies 21 are stacked vertically on the second support base 22. In this embodiment, there are four crushing assemblies 21, which are, from top to bottom, a first-stage crushing assembly 101, a second-stage crushing assembly 102, a third-stage crushing assembly 103, and a fourth-stage crushing assembly 104. A fixed shaft is connected to all four crushing assemblies 21. The fixed shaft passes through each crushing assembly 21 sequentially along the central axis of each crushing assembly 21 and is fixed to each crushing assembly 21. The crushing assembly 21 is approximately a triangular prism structure, including a mutually fixed upper cover 211 and a base. 212, the top cover 211 and the base 212 are both plate-shaped structures arranged in the horizontal direction. A crushing module is provided between the top cover 211 and the base 212. The crushing module has a second crushing chamber for crushing materials. The top covers 211 and the base 212 of each crushing assembly 21 are fixed to each other. The top cover 211 of the first-stage crushing assembly 101 is provided with a second feed hopper 23. The second feed hopper 23 is made of polyurethane material. The second feed hopper 23 is provided with a second inlet and communicates with the first through hole 2111 of the first-stage crushing assembly 101. The base 212 of the fourth-stage crushing assembly 104 is fixed to the second support 22. The second support 22 is provided with a second outlet. The second outlet communicates with the second through hole 2121 and the third through hole 2122 of the fourth-stage crushing assembly 104.

[0043] The vertical projection area of ​​the primary crushing assembly 101 is smaller than that of the other three crushing assemblies 21. The first through hole 2111, the second crushing chamber, and the second through hole 2121 of each crushing assembly 21 are all vertically connected to form the main crushing path. Material falls along the main crushing path under its own gravity, passing through each crushing assembly 21 sequentially, and is crushed into different particle sizes. For example, material with a particle size of 80-100mm is crushed into 30mm particle size by the crushing module after passing through the primary crushing assembly 101; material with a particle size of 30mm is crushed into 20mm particle size by the crushing module after passing through the secondary crushing assembly 102; material with a particle size of 20mm is crushed into 10mm particle size by the crushing module after passing through the tertiary crushing assembly 103; and material with a particle size of 10mm is crushed into 5mm particle size by the crushing module after passing through the quaternary crushing assembly 104. The bases 212 of the crushing assembly 102, the three-stage crushing assembly 103, and the four-stage crushing assembly 104 are all provided with third through holes 2122. The upper covers 211 of the three-stage crushing assembly 103 and the four-stage crushing assembly 104 are provided with fourth through holes 2112 corresponding to the third through holes 2122. Each third through hole 2122 and each fourth through hole 2112 are connected vertically to form a diversion path. After the material crushed by each stage of the crushing assembly 21 fills the second crushing chamber of the next stage crushing assembly 21, it can be discharged from the crushing chamber. The material overflows from the first gap and falls vertically along the diversion path. For example, after the material with a particle size of 30mm fills the second crushing chamber of the secondary crushing assembly 102, the excess material can overflow from the first gap and fall along the diversion path on one side of the crushing module until it is discharged from the second discharge port. The material with particle sizes of 20mm and 10mm can also fall along the diversion path. Therefore, in this embodiment, four different particle sizes of material can be obtained from the second discharge port of the second crushing device 2.

[0044] Below the first through hole 2111 of each level of the upper cover 211, a second material distribution cone 215 is provided. The second material distribution cone 215 is approximately trumpet-shaped and is used to guide the material falling through the first through hole 2111, so that the material falls evenly into the second crushing chamber. The edge of the first through hole 2111 extends downward in the vertical direction to form a first baffle 2113, which is used to guide the material falling along the main crushing path into the second crushing chamber. The edge of the upper cover 211 extends downward in the vertical direction to form a second baffle 2113. 114. The edge of the base 212 extends vertically upward to form a third baffle 2123. The second baffle 2114 and the third baffle 2123 are used to guide the material falling along the diversion path into the third through hole 2122 to prevent material leakage. The crushing module of the primary crushing assembly 101 is also provided with a baffle 216. The baffle 216 is located at the inlet of the second crushing chamber and corresponds to the first baffle 2113 to prevent the material in the second crushing chamber of the primary crushing assembly 101 from overflowing from the first gap.

[0045] By setting up crushing assemblies 21 in each stage along the vertical direction, the material flows from top to bottom through each stage of crushing assemblies 21 under the action of gravity. The material processed by the crushing module enters the next stage for further crushing through the second through hole 2121, forming the main crushing path from top to bottom. At the same time, the material that does not enter the second crushing chamber overflows through the first gap and is directly discharged through the third through hole 2122 and the fourth through hole 2112, forming a diversion path. Through the cooperation of the main crushing path and the diversion path, one piece of equipment can simultaneously produce multiple specifications of finished products after different levels of crushing, without the need to configure multiple pieces of equipment or add an external screening and return system, which greatly simplifies the process flow and reduces equipment investment and floor space. By utilizing the structural cooperation between the first gap and the diversion path, adaptive diversion of materials is achieved. When the second crushing chamber of a certain stage is filled, the excess material automatically overflows and is discharged through the diversion path without manual intervention or additional control devices, thus avoiding repeated circulation of materials inside the equipment and reducing ineffective wear and energy consumption. The crushing assemblies 21 at each stage are stacked vertically, and the material is transported by gravity throughout the process, eliminating the need for external transfer equipment such as belt conveyors and elevators, which greatly reduces the energy consumption of material transportation. At the same time, the material flows inside the closed equipment, reducing the risk of dust leakage and improving environmental performance.

[0046] In a preferred embodiment, the crushing module includes: The motion unit 213 is located between the upper cover 211 and the base 212. The motion unit 213 has at least one installation space extending in the vertical direction, and the inner wall of the installation space is arranged with third breaking teeth along its circumference. Rotor unit 214 is located in the installation space and together with motion unit 213 forms a second crushing chamber. The inner diameter of the second crushing chamber gradually decreases from top to bottom. A fourth crushing tooth is arranged circumferentially on the outer wall of rotor unit 214. Rotor unit 214 is used to drive the fourth crushing tooth to rotate relative to motion unit 213 in the vertical direction to grind the material in the second crushing chamber.

[0047] like Figure 11 , Figure 17 and Figure 18 As shown, the motion unit 213 is located between the upper cover 211 and the base 212. The interior of the motion unit 213 has an installation space, which is approximately cylindrical and extends vertically. A rotor unit 214 is installed within the installation space. A second crushing chamber is formed between the outer wall of the rotor unit 214 and the inner wall of the installation space. The rotor unit 214 drives the fourth crushing tooth to rotate relative to the third crushing tooth, thereby grinding and crushing the material in the second crushing chamber. The second crushing chamber is approximately a wedge-shaped space that is larger at the top and smaller at the bottom. The wedge-shaped structure of the second crushing chamber can cooperate with the fourth crushing tooth on the outer wall of the rotor unit 214, so that the material is constrained in space as it moves from top to bottom under the action of gravity. As the crushing force gradually increases, the fourth crushing tooth of rotor unit 214 applies a continuous and uniform extrusion force to the material. When the material passes through the wedge-shaped second crushing chamber that gradually narrows from top to bottom, it is subjected to multi-directional and multi-layer extrusion and kneading. This non-impact crushing method does not crush the material instantly, but achieves the purpose of shaping by grinding away the edges of the material. It can effectively reduce the generation of needle-like and flaky materials, significantly improve the cubic morphology of the finished material, and achieve the "shaping" effect. In addition, compared with impact crushing, the extrusion grinding force is gentler. The material is gradually refined in the chamber rather than being crushed instantly, which greatly reduces the phenomenon of over-grinding and keeps the stone powder content within a controllable range, creating conditions for subsequent adjustment and optimization of gradation.

[0048] Furthermore, the number of installation spaces is set to three, and the three installation spaces are evenly distributed around the central axis of the motion unit 213; Specifically, by opening three installation spaces on the motion unit 213, and setting a rotor unit 214 in each installation space to form a second crushing chamber, compared with a device with a single crushing chamber, the contact area between the inner wall of the second crushing chamber and the material can be effectively increased, further enhancing the grinding effect and significantly improving the processing capacity per unit time of the second crushing device 2; grinding work is carried out simultaneously in multiple second crushing chambers, which can avoid local accumulation of materials, ensure that all materials can be fully crushed, and improve the uniformity of the finished product quality.

[0049] In a preferred embodiment, a support shaft 221 and a hydraulic cylinder 222 are fixed between the upper cover 211 and the base 212; The support shaft 221 extends vertically, and multiple sets of support shafts 221 are fitted with a common motion unit 213. The motion unit 213 has a first gap with the upper cover 211 and a second gap with the base 212. The drive end of the hydraulic cylinder 222 is fixed to the motion unit 213 and is used to drive the motion unit 213 to reciprocate along the support shaft 221 with a set stroke and a set frequency.

[0050] like Figure 10-12 As shown, a support beam 223 is provided between the upper cover 211 and the base 212. Three sets of support beams 223 are evenly distributed around the central axis of the crushing assembly 21 and extend vertically. The two ends of the support beams 223 are fixed to the upper cover 211 and the base 212 respectively, so that the upper cover 211 and the base 212 form an integral structure. A support shaft 221 and a hydraulic cylinder 222 are fixed between the upper cover 211 and the base 212. The three sets of support shafts 221 pass through the motion unit 213 vertically. The motion unit 213 can slide between the upper cover 211 and the base 212 along the support shafts 221. A hydraulic cylinder 222 is provided between each set of two support shafts 221. The hydraulic cylinder 222 is used for... The drive motion unit 213 reciprocates along the support shaft 221 with a set stroke and a set frequency. The set stroke and set frequency can be set according to specific conditions (such as the final size of the material being crushed by the current crushing module, crushing efficiency, etc.). By setting the motion unit 213, which can reciprocate in the vertical direction, it cooperates with the rotor unit 214 to grind the material in the second crushing chamber, further improving the grinding and crushing effect. The motion unit 213 is moved with a set stroke and a set frequency by the hydraulic cylinder 222, which can precisely control the motion parameters of the motion unit 213 to match the rotation of the rotor unit 214, thereby achieving fine adjustment of the crushing process.

[0051] Furthermore, the set stroke of the motion unit 213 of each stage crushing assembly 21 decreases sequentially from top to bottom, and the set frequency increases sequentially from top to bottom; Specifically, since each crushing assembly 21 grinds and crushes the material into different particle sizes, and the particle size after crushing by each crushing assembly 21 decreases step by step, by successively reducing the stroke of each level of motion unit 213 in the vertical direction and increasing its reciprocating frequency, it can be ensured that the material in each crushing chamber falls down in time after being ground and crushed to the specified size, avoiding excessive residence of the material in the crushing chamber, and improving grinding and crushing efficiency and output.

[0052] In a preferred embodiment, the outer diameter of the rotor unit 214 gradually increases from top to bottom; The hydraulic cylinder 222 is also used to adjust the lowest point of the set stroke to change the minimum distance between the inner wall of the motion unit 213 and the outer wall of the rotor unit 214 when the motion unit 213 is at the lowest point, thereby adjusting the size of the bottom outlet of the second crushing chamber and thus changing the specifications of the discharged material.

[0053] like Figure 11 and Figure 12 As shown, the rotor unit 214 is approximately a frustum-shaped structure, with its outer diameter gradually increasing from top to bottom. The frustum-shaped rotor unit 214 and the cylindrical mounting space together form a wedge-shaped second crushing chamber. The lowest point of the movement unit 213 along the set stroke is adjusted by the hydraulic cylinder 222. If the lowest point of the set stroke is adjusted upward, the minimum distance between the inner wall of the mounting space and the outer wall of the rotor unit 214 when the movement unit 213 moves vertically increases, and the final particle size of the material crushed by the current crushing module also increases. If the lowest point of the set stroke is adjusted downward, the minimum distance between the inner wall of the mounting space and the outer wall of the rotor unit 214 when the movement unit 213 moves vertically decreases, and the final particle size of the material crushed by the current crushing module also decreases. Thus, the diameter of the chamber at the outlet of the second crushing chamber can be adjusted, that is, the crushing module can be adjusted according to actual needs to produce materials of a specified particle size.

[0054] Furthermore, the motion unit 213 includes a motion frame 2131, which is slidably disposed between the upper cover 211 and the base 212. The motion frame 2131 is approximately a triangular prism structure with three cylindrical mounting holes arranged around the central axis of the motion frame 2131. A first wear-resistant component 2132 is fixed inside the mounting holes. The first wear-resistant component 2132 has an internal mounting space. Multiple third crushing teeth are arranged circumferentially on the inner wall of the first wear-resistant component 2132. The third crushing teeth form a multi-stage grinding structure, which enhances the kneading and grinding effect on the material and improves the particle shape. The first wear-resistant component 2132 is a consumable part and is separately disposed from the motion frame 2131. When the first wear-resistant component 2132 is worn during the material crushing process, it can be replaced separately for easy maintenance. The arrangement of the third crushing teeth increases the thickness of the wear-resistant layer on the surface of the wear-resistant component, further extending its service life.

[0055] Furthermore, the rotor unit 214 includes a second central shaft 224. Three second central shafts 224 are evenly distributed around the central axis of the crushing assembly 21. Their upper and lower ends are fixed to the upper cover 211 and the base 212, respectively. A driving member 2141 is sleeved on the second central shaft 224. The driving member 2141 can also be a hydraulic motor. A central shaft sleeve 2143 is also provided between the driving member 2141 and the second central shaft 224. A second wear-resistant member 2142 is sleeved on the outer periphery of the driving member 2141. A buffer bushing 2144 is also provided between the second wear-resistant member 2142 and the driving member 2141. The second wear-resistant member 2142 is approximately frustum-shaped. A fourth crushing tooth is arranged circumferentially on the outer wall of the second wear-resistant member 2142. The second wear-resistant member 2142 is used to rotate around the second central shaft 224 relative to the moving outer frame 2131 under the drive of the driving member 2141, so that the fourth crushing tooth cooperates with the third crushing tooth to grind the material in the second crushing chamber.

[0056] Furthermore, the rotational speed of the drive component 2141 of each stage crushing assembly 21 decreases sequentially from top to bottom; Specifically, the rotation speed of the drive component 2141 of each crushing assembly 21 can be set according to the actual situation (such as the hardness and final size of the material being crushed by the current crushing module). Different rotation speeds are set for the drive component 2141 of each crushing assembly 21. For example, if the particle size after crushing by the first-stage crushing assembly 101 is the largest among all crushing assemblies 21, the rotation speed of the drive component 2141 of the first-stage crushing assembly 101 is also set to the maximum. If the particle size after crushing by the fourth-stage crushing assembly 104 is the smallest among all crushing assemblies 21, the rotation speed of the drive component 2141 of the fourth-stage crushing assembly 104 is also set to the minimum. That is, the rotation speed of the drive component 2141 is set according to the size of the material after crushing by the crushing assembly 21. This avoids over-grinding of the material in the second crushing chamber, achieves fine shaping, and effectively controls the stone powder content. It is particularly suitable for high-end sand making scenarios with strict requirements for stone powder content.

[0057] Furthermore, the taper of the second wear-resistant component 2142 of each stage crushing assembly 21 decreases sequentially from top to bottom; Specifically, since the second wear-resistant component 2142 is approximately frustum-shaped, the larger its taper and the greater the inclination angle of its outer wall, the slower the material falls into the second crushing chamber. The material particle size in the second crushing chamber of the upper crushing assembly 21 is large, and the larger taper allows the second crushing chamber to contract rapidly from top to bottom, applying a strong initial compressive force to the large particles entering, ensuring that the large particles are effectively crushed in the initial stage of entry. The material particle size in the second crushing chamber of the lower crushing assembly 21 is smaller, and the smaller taper allows the inner wall of the second crushing chamber to be relatively flat, and the material falls into the chamber at a faster speed, avoiding excessive stone powder due to excessive retention. In addition, the bottom of the outer wall of the second wear-resistant component 2142 extends vertically, that is, the bottom of the outer wall of the second wear-resistant component 2142 no longer has an inclination angle. Through the above settings, the wear on the second wear-resistant component 2142 when the material is discharged from the second crushing chamber can be effectively reduced, reducing the degree of wear of the second wear-resistant component 2142.

[0058] Working principle: Material is unloaded from the ground by a dump truck into the first inlet of the first crushing device 1. It enters the first crushing device 1 directly by gravity. After being crushed to the first particle size range by the first crushing device 1, the material is discharged from the first outlet at the bottom of the first crushing device 1 and enters the inlet of the first elevator 3. The first elevator 3 lifts the material vertically to the ground and enters the second inlet of the second crushing device 2 from its outlet. The second crushing device 2 crushes the material to the second particle size range and simultaneously outputs materials of multiple particle sizes. The material output by the second crushing device 2 enters the inlet of the second elevator 4 through the second outlet at its bottom. The second elevator 4 lifts the material vertically to the screening device 5. After receiving the material, the screening device 5 classifies and transports the material to each storage bin 6 according to different particle sizes.

[0059] When the first crushing device 1 is working, the material enters the first crushing chamber between the outer frame body 12 and the crushing body 16 through the first feed port. The first drive structure 17 drives the crushing body 16 to reciprocate in the vertical direction. At the same time, the second drive structure drives the crushing body 16 to rotate around the first central axis 15, so that the second crushing teeth 161 on the outer wall of the crushing body 16 and the first crushing teeth 121 on the inner wall of the outer frame body 12 form a compound crushing motion. As the material falls along the first crushing chamber under the action of gravity, the crushing space gradually narrows. The material is subjected to the initial compression and shearing of the second crushing teeth 161 and the first crushing teeth 121 in the upper part of the first crushing chamber, achieving coarse crushing. It is subjected to the enhanced crushing action in the middle of the first crushing chamber, achieving medium crushing. It is subjected to the high-precision grinding action in the lower part of the first crushing chamber, achieving fine crushing. After being crushed step by step, the material reaches the first particle size range and is discharged from the first discharge port.

[0060] When the second crushing device 2 is working, the material conveyed by the first elevator 3 enters the second crushing chamber of the first-stage crushing assembly 21 through the second feed inlet. The motion unit 213 of each crushing assembly 21 is driven by the hydraulic cylinder 222 to reciprocate along the support shaft 221 at a set stroke and set frequency. At the same time, the rotor unit 214 is driven by the hydraulic motor to rotate around the second central shaft 224, causing the fourth crushing tooth to rotate relative to the third crushing tooth, thus grinding and crushing the material in the second crushing chamber. After the material is ground to 30mm in the second crushing chamber of the first-stage crushing assembly 101, it passes through the first-stage crushing assembly 101. The material falls through the second through hole 2121 on the base 212 of the crushing assembly 101 and enters the first through hole 2111 of the secondary crushing assembly 102. The secondary crushing assembly 102 grinds the material to 20mm. The ground material then enters the first through hole 2111 of the tertiary crushing assembly 103 through the second through hole 2121 on the base 212 of the secondary crushing assembly 102. The tertiary crushing assembly 103 grinds the material to 10mm. The ground material then enters the first through hole 2111 of the quaternary crushing assembly 104 through the second through hole 2121 on the base 212 of the tertiary crushing assembly 103. 111, the four-stage crushing assembly 104 grinds the material to 5mm. The ground material falls through the second through hole 2121 on the base 212 of the four-stage crushing assembly 104 and is discharged through the second discharge port. When the second crushing chamber of the two-stage crushing assembly 102 is full, the excess material overflows through the first gap of the two-stage crushing assembly 102, falls along the outside of the motion unit 213, enters the three-stage crushing assembly 103 through the third through hole 2122 of the two-stage crushing assembly 102 and the fourth through hole 2112 of the three-stage crushing assembly 103, and then enters the three-stage crushing assembly 103 through the third through hole 2122 of the three-stage crushing assembly 103. The material enters the fourth through hole 2112 of the fourth-stage crushing assembly 104 and is finally discharged through the third through hole 2122 and the second discharge port of the fourth-stage crushing assembly 104. After the second crushing chambers of the third-stage crushing assembly 103 and the fourth-stage crushing assembly 104 are filled, the excess material also overflows through the first gap and enters the diversion path through the third through hole 2122 of the corresponding level and falls to the discharge. Finally, the second crushing device 2 simultaneously produces finished materials with four particle sizes: 30mm, 20mm, 10mm and 5mm.

[0061] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A material crushing production line, characterized in that, include: The first crushing device (1) is set vertically below the ground. The first feed port of the first crushing device (1) is connected to the ground and is used to crush the raw material to the first particle size range. The second crushing device (2) is located on one side of the first crushing device (1) along the first horizontal direction. The second crushing device (2) is set below the ground in the vertical direction. The second feed port of the second crushing device (2) extends out of the ground and is used to crush the material after being crushed by the first crushing device (1) into finished materials containing multiple particle sizes. The first elevator (3) and the second elevator (4) are located between the first crushing device (1) and the second crushing device (2) and both extend in a vertical direction; the first elevator (3) is used to transport the material crushed by the first crushing device (1) to the second crushing device (2) and the second elevator (4) is used to transport the finished material. Screening device (5) is located above the second crushing device (2), and has multiple storage bins (6) at the end of its conveying direction. The screening device (5) is used to receive the finished material output by the second elevator (4) and convey it to each storage bin (6) according to different particle size. The multiple storage bins (6) are arranged along the second horizontal direction, which is perpendicular to the first horizontal direction.

2. The material crushing production line according to claim 1, characterized in that, The second crushing device (2) includes multiple crushing assemblies (21), which are a primary crushing assembly (101) and at least one secondary crushing assembly arranged in a vertical direction. Each crushing assembly (21) includes a crushing module, and a second crushing chamber is provided in the crushing module. Each second crushing chamber is connected in a vertical direction to form a main crushing path. The secondary crushing assembly is provided with a diversion channel, which is located on one side of the crushing module. The diversion channels are connected in the vertical direction to form a diversion path. In this process, after the material is crushed by the primary crushing assembly (101), part of the material falls along the main crushing path and is crushed and discharged after passing through each of the secondary crushing assemblies in sequence, while the other part of the material that does not enter the second crushing chamber of the current secondary crushing assembly falls and is discharged along the diversion path.

3. The material crushing production line according to claim 2, characterized in that, The crushing assembly (21) also includes a top cover (211) and a base (212) fixed to each other. The top cover (211) is provided with a first through hole (2111), and the base (212) is provided with a second through hole (2121). The second through hole (2121) and the first through hole (2111) are arranged in a vertical direction corresponding to each other. The crushing module is located between the upper cover (211) and the base (212), and the second crushing chamber is located between the first through hole (2111) and the second through hole (2121); The second through hole (2121) of the current stage crushing assembly (21) is connected to the first through hole (2111) of the next stage crushing assembly (21) to form the main crushing path.

4. The material crushing production line according to claim 3, characterized in that, The base (212) of the secondary crushing assembly is provided with a third through hole (2122), which is located on one side of the second through hole (2121). Each of the third through holes (2122) is arranged in a vertical direction. The upper cover (211) adjacent to the third through hole (2122) is provided with a fourth through hole (2112), which is located on one side of the first through hole (2111) and is connected to the third through hole (2122) to form the diversion path. There is a first gap between the crushing module and the upper cover (211). When the second crushing chamber of the secondary crushing assembly is filled, the material that has not entered the second crushing chamber overflows through the first gap and then falls and is discharged through the diversion path.

5. A material crushing production line according to claim 4, characterized in that, The crushing module includes: Motion unit (213) is located between the upper cover (211) and the base (212). The motion unit (213) has at least one installation space extending in the vertical direction. The inner wall of the installation space is arranged with third breaking teeth along its circumference. The rotor unit (214) is located in the installation space and together with the motion unit (213) forms the second crushing chamber. The inner diameter of the second crushing chamber gradually decreases from top to bottom. The outer wall of the rotor unit (214) is provided with a fourth crushing tooth arranged circumferentially. The rotor unit (214) is used to drive the fourth crushing tooth to rotate relative to the motion unit (213) in a vertical direction to grind the material in the second crushing chamber.

6. A material crushing production line according to claim 5, characterized in that, A support shaft (221) and a hydraulic cylinder (222) are fixed between the upper cover (211) and the base (212). The support shaft (221) extends vertically, and the motion unit (213) is sleeved on multiple sets of the support shaft (221). The motion unit (213) has the first gap between itself and the upper cover (211), and has the second gap between itself and the base (212). The driving end of the hydraulic cylinder (222) is fixed to the motion unit (213) and is used to drive the motion unit (213) to reciprocate along the support shaft (221) with a set stroke and a set frequency.

7. A material crushing production line according to claim 6, characterized in that, The outer diameter of the rotor unit (214) gradually increases from top to bottom; The hydraulic cylinder (222) is also used to adjust the lowest point of the set stroke to change the minimum distance between the inner wall of the motion unit (213) and the outer wall of the rotor unit (214) when the motion unit (213) is located at the lowest point, thereby adjusting the size of the bottom outlet of the second crushing chamber and thus changing the specifications of the discharged material.

8. A material crushing production line according to claim 5, characterized in that, The rotor unit (214) includes: A driving component (2141) is disposed between the upper cover (211) and the base (212). A second central shaft (224) is provided on the driving component (2141). The second central shaft (224) extends in the vertical direction and its two ends are fixed to the upper cover (211) and the base (212) respectively. The second wear-resistant component (2142) is sleeved on the outer periphery of the driving component (2141) and is used to rotate around the second central axis (224) under the drive of the driving component (2141). The fourth crushing teeth are arranged circumferentially on the outer wall of the second wear-resistant component (2142).

9. A material crushing production line according to claim 1, characterized in that, The first crushing device (1) includes: The frame has a first discharge port at the bottom and an outer frame body (12) on the frame. The top of the outer frame body (12) has the first inlet port and the inner wall of the outer frame body (12) has first crushing teeth (121) arranged circumferentially. An internal crushing assembly is disposed within the outer frame body (12). The internal crushing assembly includes a first central shaft (15) coaxially disposed with the outer frame body (12) and a crushing body (16) sleeved on the first central shaft (15). Second crushing teeth (161) are arranged circumferentially on the outer wall of the crushing body (16). A first crushing cavity is formed between the crushing body (16) and the outer frame body (12). The internal crushing assembly also includes a first driving structure (17) and a second driving structure. The first driving structure (17) is used to drive the crushing body (16) to reciprocate in the vertical direction relative to the outer frame body (12). The second driving structure is used to drive the crushing body (16) to rotate around the first central shaft (15) relative to the outer frame body (12). After the material enters the first crushing chamber through the first feed inlet, the second crushing tooth (161) is driven to reciprocate along the vertical direction and rotate around the first central axis (15) by the cooperation of the first driving structure (17) and the second driving structure, so that the second crushing tooth (161) and the first crushing tooth (121) form a compound crushing motion, thereby crushing the material.

10. A material crushing production line according to claim 9, characterized in that, The inner diameter of the outer frame body (12) gradually decreases from top to bottom, the outer diameter of the crushing body (16) gradually decreases from top to bottom, and the inner diameter of the first crushing chamber gradually decreases from top to bottom.

11. A material crushing production line according to claim 9, characterized in that, The first driving structure (17) includes: The hydraulic drive rod (171) and the hydraulic drive cylinder (172) are both sleeved on the first central shaft (15) and are coaxial with the first central shaft (15); the bottom of the hydraulic drive rod (171) is slidably connected to the hydraulic drive cylinder (172), and the top of the hydraulic drive rod (171) is connected to the crushing body (16). A hydraulic oil chamber is formed between the hydraulic drive cylinder (172), the hydraulic drive rod (171), and the first central shaft (15). By injecting or draining hydraulic oil into the hydraulic oil chamber, the hydraulic drive rod (171) is driven to move in the vertical direction, thereby driving the crushing body (16) to move in the vertical direction.

Images