A crushing and screening plant for mine production

Abstract

The application relates to a crushing and screening device for mine production, which comprises a machine shell, a crushing mechanism, a power transmission mechanism and a screening mechanism; the power transmission mechanism comprises an upper bevel gear, a lower bevel gear, a supporting body, a power bevel gear and a driving motor; the crushing mechanism comprises a crushing cone, a bushing and an eccentric shaft sleeve; the upper part of the upper bevel gear is connected with the crushing cone through the eccentric shaft sleeve; the inner end of the power bevel gear is connected with the lower bevel gear and the upper bevel gear; the screening mechanism comprises a central body, a spiral screen plate, a screen sleeve and an outer sleeve; the central body is connected with the lower bevel gear; the spiral screen plates are fixed on the outer side of the central body in a spiral shape; the outer sleeve is arranged on the outer side of the screen sleeve; a middle fixed body is arranged at the bottom of the machine shell; the central body is rotatably arranged on the middle fixed body; a plurality of annular material receiving areas are arranged on the outer side of the middle fixed body; the crushing and screening are synchronously operated through one power system; the whole machine is integrated; the structure is coherent; and the sealing performance is good.

Description

Technical Field

[0001] This invention relates to the field of ore crushing and screening technology, specifically to a crushing and screening equipment for mining production. Background Technology

[0002] In the mining process, the ore must first be mined, then crushed several times, and finally screened to obtain the finished product. Crushing and screening are crucial steps in the mining and processing of ore, and both require very important equipment. Among these steps, the crushing and screening of stone is a critical one. Currently, there are issues with the crushing and screening of ore, such as insufficient grading after crushing, and the generation of a large amount of dust during crushing and screening, which requires dust treatment.

[0003] Existing technologies, such as the utility model patent with patent number 202020465287.6, disclose a crushing and screening device for mining operations. This device includes a base plate, a support plate fixedly connected to the side wall of the base plate, a screening assembly fixedly connected to the upper end of the support plate, a support rod fixedly connected to the side wall of the base plate, a crushing box fixedly connected to the upper end of the support rod, and two motors fixedly connected to the outer wall of the crushing box. The output ends of the motors extend into the interior of the crushing box and are fixedly connected to crushing rollers. This structure uses a vibrating screen and crushing rollers for crushing and screening. However, this structure has a complex power system design, and during screening, the vibrating screen generates significant noise, has poor overall sealing leading to severe dust pollution, and has a limited stroke, resulting in poor screening and grading effects. Therefore, it is necessary to research a crushing and screening device for mining operations. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a crushing and screening equipment for mining production, which effectively solves the problems of complex structure, high cost, poor screening and grading effect and poor overall sealing of existing crushing and screening equipment.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a crushing and screening equipment for mining production, comprising a casing, a crushing mechanism, a power transmission mechanism, and a screening mechanism; wherein the power transmission mechanism includes an upper bevel gear, a lower bevel gear, a support body, a power bevel gear, and a drive motor; the crushing mechanism includes a crushing cone, a bushing, and an eccentric bushing; a bushing is provided on the upper part of the casing, the support body is fixed to the inner wall of the casing by a support rod, the upper and lower bevel gears are rotatably mounted on the support body and are respectively located on the upper and lower sides of the support body, the upper part of the upper bevel gear is used for transmission connection to the crushing cone through the eccentric bushing, the inner end of the power bevel gear is simultaneously connected to both the lower and upper bevel gears, and its outer end is connected to an external drive motor; the screening mechanism includes a central body, a spiral screen plate, a screen sleeve, and an outer sleeve; the central body is connected to the lower bevel gear for transmission. The spiral screen plates are all fixed to the outside of the central body in a spiral shape. The spiral screen plates are arranged in multiple layers at intervals, and the mesh size of the spiral screen plates gradually decreases from top to bottom. The screen sleeve is fixed to the outside of the spiral screen plate, and the mesh size of the screen sleeve is smaller than that of the spiral screen plate. The outer sleeve is arranged on the outside of the screen sleeve. The upper and lower parts of the screening space formed by the spiral screen plates are sealed, and the lower part of the spiral screen plates has different lengths. Corresponding discharge ports are provided at the lower part of different spiral screen plates. The discharge ports are distributed at intervals on different circumferences. A discharge pipe extends downward from the discharge port. A central fixed body is provided at the bottom of the machine casing. The central body is rotatably mounted on the central fixed body. Multiple annular receiving areas are provided on the outside of the central fixed body. The discharge pipe is connected to the receiving area and can rotate around the receiving area. Multiple outwardly extending discharge pipes are provided at the bottom or side of the receiving area.

[0006] Furthermore, multiple sleeves are spaced apart on the outer side of the central fixed body, forming the material receiving area between the sleeves, and a downward spiraling guide plate is provided at the bottom of the material receiving area.

[0007] Furthermore, a positioning seat is provided on the outer side of the screen sleeve, and a positioning groove is provided on the inner wall of the outer sleeve. The outer side of the outer sleeve is fixed to the inner wall of the machine housing. The positioning seat is adapted to sit in the positioning groove and can rotate along the positioning groove.

[0008] Furthermore, a guide bucket is provided at the upper part of the outer sleeve, and the outer side of the guide bucket is fixed to the machine casing.

[0009] Furthermore, a protective cover is provided in the middle of the housing, which encloses the power transmission mechanism in the middle. Its side is connected to the side of the housing through a support body, and there is a discharge area between the support bodies.

[0010] Furthermore, a feeding hopper is provided on the upper part of the machine casing, and a guide hopper is provided in the center of the feeding hopper through a fixed rod. A support rod is fixed on the upper part of the guide hopper, and a spray bar that spreads outwards is provided on the upper part of the support rod. The spray bar is equipped with a nozzle, and the nozzle is connected to an external pump through a water pipe.

[0011] Furthermore, the spacing between the spiral screen plates gradually increases from top to bottom.

[0012] Furthermore, an electromagnetic accelerator is arranged vertically within the central body. The electromagnetic accelerator is connected to a power source via a switch, and the power source is built into the central body.

[0013] Furthermore, the support body has an oil injection chamber in the middle, which is connected to the rotating structure on the upper and lower sides respectively, and an oil injection pipe extending outward is provided on the side wall of the oil injection chamber.

[0014] Furthermore, the feed pipes are distributed in a dispersed manner on different circumferences centered on the central fixed body.

[0015] The beneficial effects of the above technical solution are as follows: The present invention adopts an integrated equipment for crushing and screening, and realizes the synchronous operation of screening and crushing through a power transmission mechanism. Moreover, the structure only adopts a single power drive structure, which is transmitted through upper and lower bevel gears and a power bevel gear. The power structure is reasonably set, reducing the power input. For the operation mode of crushing and screening dual mechanisms, the cost input is reduced and the system synergy is improved.

[0016] In terms of sieving, this invention uses a central body as a supporting structure, on which a spiral sieve plate is arranged. This structure is tightly and sealed to the central body, and the spiral sieve plate is arranged in multiple layers in a spiral pattern, so that there are gaps between the layers. The upper sieve has the largest mesh size, the middle one is next, the bottom is a closed plate structure, and the outermost one is a side sieve sleeve with the smallest mesh size. This structure forms multiple sieving spaces. The sieve sleeve allows small particles to enter the gap between the sieve sleeve and the outer sleeve and pass directly vertically. The spiral sieve plate will sieve the corresponding particle size in sequence, and the sieving power is generated by rotation and moves along the spiral path. The sieving path is long and the sieving is thorough.

[0017] In terms of material receiving, the present invention is based on a central fixed body, on which an annular material receiving area is arranged. The ends of the spiral screen plate have different lengths and form multiple end convergence areas in a stepped manner. The material discharge pipe is arranged on the convergence area, and the ends of the material discharge pipe are located on different circumferences. The central fixed body provides a rotation basis for the central body. The material discharge pipe is placed in the material receiving area and can rotate along the material receiving area to realize material discharge.

[0018] Meanwhile, the invention incorporates a material guiding and dust-reducing spray structure at the feeding hopper to prevent dust from scattering during operation. Furthermore, the crushing and screening chambers are connected in the overall structure, resulting in good overall sealing.

[0019] Therefore, the present invention has a novel structure, in which a single power system supports the synchronous operation of crushing and screening, resulting in good structural coordination, an integrated and coherent machine, good sealing to prevent dust spillage, excellent crushing and grading screening effects, a wide variety of products, and significant economic benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the screening mechanism in this invention;

[0022] Figure 3 for Figure 2 Front view structural diagram;

[0023] Figure 4 for Figure 2 A top-view structural diagram;

[0024] Figure 5 for Figure 4 The AA-direction cross-section shown in the figure;

[0025] Figure 6 This is a schematic diagram of the distribution structure of the feed pipe;

[0026] Figure 7 This is a schematic diagram of the material receiving structure;

[0027] Figure 8 This is a schematic diagram of the distribution structure of the feed pipe.

[0028] Reference numerals in the attached drawings: 1 is the casing, 2 is the bushing, 3 is the crushing cone, 4 is the drive motor, 5 is the power bevel gear, 6 is the upper bevel gear, 7 is the support body, 8 is the lower bevel gear, 9 is the protective cover, 10 is the guide hopper, 11 is the central body, 12 is the sealing plate, 13 is the spiral screen plate, 14 is the discharge port, 15 is the screen sleeve, 16 is the outer sleeve, 17 is the positioning seat, 18 is the positioning seat, 19 is the first screening space, 20 is the second screening space, 21 is the third screening space, 22 is the fourth screening space, 23 is the discharge pipe, 24 is the central fixed body, 25 is the first receiving area, 26 is the second receiving area, 27 is the third receiving area, 28 is the fourth receiving area; 29 is the feeding hopper, 30 is the guide hopper, 31 is the support rod, 32 is the spray bar, 33 is the nozzle, and 34 is the pump. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] Example 1: This example aims to provide a crushing and screening equipment for mining production, mainly used for crushing and screening ores in mines. Existing crushing and screening equipment for mining production primarily uses crushing rollers and conical crushing structures for the crushing process, and vibrating screens for screening. These two structures are often simply positioned relative to each other, structurally unrelated, and the sealing at the connection point is difficult to guarantee. Due to the characteristics of vibrating screens, screening is difficult to connect with crushing, and the screening stroke is limited, or a large area is required for screening, making it inconvenient to use. Therefore, this example provides a crushing and screening equipment for mining production.

[0031] like Figure 1 The image shows a crushing and screening equipment for mining production, including a housing 1, a crushing mechanism, a power transmission mechanism, and a screening mechanism. The power transmission mechanism includes an upper bevel gear 6, a lower bevel gear 8, a support body 7, a power bevel gear 5, and a drive motor 4. The crushing mechanism includes a crushing cone 3, a bushing 2, and an eccentric bushing. In this embodiment, the upper part is a cone crushing structure. A bushing 2 is provided on the upper part of the housing. The support body 7 is fixed to the inner wall of the housing 1 by a support rod. The support body 7 can serve as a rotational support for the upper and lower bevel gears. An oil injection chamber is provided in the middle of the support body. The oil injection chamber is connected to the upper and lower rotating structures respectively. An oil injection pipe extending outward is provided on the side wall of the oil injection chamber to ensure the smooth operation of the bevel gears.

[0032] The upper bevel gear 6 and the lower bevel gear 8 are rotatably mounted on the support body 7 and are located on the upper and lower sides of the support body 7, respectively. The upper part of the upper bevel gear 6 is connected to the crushing cone 3 through an eccentric bushing. The crushing cone is driven to swing through the eccentric bushing, thereby crushing the ore passing between the bushing and the crushing cone.

[0033] The inner end of the power bevel gear 5 is simultaneously connected to the lower bevel gear 6 and the upper bevel gear 8, while its outer end is connected to the external drive motor 4. The drive motor 4 can drive the rotation of the upper and lower bevel gears respectively. The upper bevel gear drives the crushing mechanism, while the lower bevel gear drives the screening mechanism located below, thereby adding ore from the feed port. After crushing, the ore enters the screening structure. The structure is reasonably arranged and the transmission structure is cleverly arranged.

[0034] In specific structures, such as Figure 2-5As shown, the screening mechanism includes a central body 11, a spiral screen plate 13, a screen sleeve 15, and an outer sleeve 16. The central body 11 is connected to the lower bevel gear 8 through a drive. Specifically, a rotating shaft and a coupling can be arranged between the two for connection. In terms of corresponding positional relationship, the central body 11 is located in the middle area of ​​the housing 1 and is arranged vertically. The central body 11 has a cylindrical structure, and its center is located at the center of the rotating shaft. The central body 11 rotates under the drive of the lower bevel gear 8.

[0035] To ensure the airtightness of the power transmission structure, a protective cover 9 is provided in the middle of the housing 1 in this embodiment. The protective cover 9 encloses the power transmission mechanism in the middle, and its side is connected to the side of the housing through a support body. There is a discharge area between the support bodies 7. The protective cover 9 seals the transmission structure and provides a discharge area. The material moves to the screening mechanism through the discharge area due to its own weight.

[0036] The spiral screen plates 13 are all fixed to the outside of the central body 11 in a spiral shape. The spiral screen plates 13 are arranged in multiple layers at intervals, and the mesh size of the spiral screen plates 13 gradually decreases from top to bottom. The front and rear ends of the spiral screen plates are sealed by the sealing plates 12. In terms of position, the screen sleeve 15 is fixed to the outside of the spiral screen plate 13, and the mesh size of the screen sleeve 14 is smaller than that of the spiral screen plate. In this embodiment, as an example, the screening aperture of the upper spiral screen plate is d1, the screening aperture of the second spiral screen plate is d2, and d1 > d2; the bolt screen plate of the third layer is a solid plate structure.

[0037] Structurally, this embodiment uses a central body 11 as a supporting structure, on which a spiral sieve plate 13 is arranged. This structure is tightly and sealed to the central body 11, and the spiral sieve plate 13 is arranged in multiple spiral layers at intervals, so that there are gaps between each layer. The upper sieve has the largest mesh size, the middle one is next, the bottom is a closed plate structure, and the outer side is a side sieve sleeve with the smallest mesh size. This structure forms multiple screening spaces. The sieve sleeve allows small particles to enter the gap between the sieve sleeve and the outer sleeve from here and pass directly vertically. The spiral sieve plate will screen the corresponding particle size in sequence, and the screening power is carried out by rotation and moves along the spiral direction. The screening path is long and the screening is thorough.

[0038] like Figure 5 As shown in the diagram, the area above the upper spiral screen plate is the first screening space 19, the area between the upper spiral screen plate and the middle spiral screen plate is the second screening space 20, the area between the middle spiral screen plate and the bottom solid spiral screen plate is the third screening space 21, and the area between the screen sleeve and the outer sleeve is the fourth screening space. This structure can produce four types of particle materials.

[0039] like Figure 2-5As shown in the diagram, the outer sleeve 16 is located on the outside of the screen sleeve 15 and serves as the outermost protective structure. The upper part of the spiral screen plate 13 is sealed, and its lower part has different lengths. Corresponding discharge ports are provided at the lower part of different spiral screen plates. The discharge ports 14 are distributed at intervals on different circumferences. A discharge pipe 23 extends downward from the discharge port 14. In the structure, the discharge pipes 23 are located on different circumferences.

[0040] As a receiving structure, this embodiment has a central fixing body 24 at the bottom of the housing 1, and a central body 11 rotatably mounted on the central fixing body 24. Multiple annular receiving areas are provided on the outer side of the central fixing body 24. A specific example of an annular receiving area is shown below. Figure 7-8 As shown in the illustration, in this embodiment, multiple sleeves are spaced apart on the outer side of the fixed body, forming the material receiving area between the sleeves. The material receiving areas are, from the inside to the outside, the first material receiving area 25, the second material receiving area 26, the third material receiving area 27, and the fourth material receiving area 28. The first material receiving area 25, the second material receiving area 26, the third material receiving area 27, and the fourth material receiving area 28 are respectively connected to the discharge pipes of the first screening space 19, the second screening space 20, the third screening space 21, and the fourth screening space 22. A downward spirally extending guide plate is provided at the bottom of the material receiving area, which facilitates the discharge of materials. In terms of correspondence, one material receiving area corresponds to one discharge pipe, and the end of the discharge pipe extends into the material receiving area. The center of the fixed body coincides with the center of the central body. The discharge pipe is connected to the material receiving area and can rotate around the material receiving area. Multiple outwardly extending discharge pipes are provided at the bottom or side of the material receiving area.

[0041] In this embodiment, a drive motor rotates, which in turn drives a power bevel gear. The power bevel gear transmits power to the upper and lower bevel gears. This integrated device combines crushing and screening, achieving synchronous operation of both processes through a power transmission mechanism. Structurally, it uses only one power drive structure, with transmission between the upper and lower bevel gears and the power bevel gear. This rational power structure design reduces power input and lowers costs for the dual-mechanism crushing and screening operation, while improving system synergy. During operation, the upper bevel gear drives the crushing cone to oscillate via an eccentric bushing, and squeezes the frame passing between the crushing cone and the bushing. The crushing process involves pressing the ore, which then enters the screening mechanism through the discharge area. During screening, the ore first falls onto the upper spiral screen plate. Due to its own gravity and rotation, the ore falls spirally along the spiral screen plate. In this process, the ore enters the middle spiral screen plate through the aperture of the upper spiral screen plate, where it undergoes secondary screening. Finally, it falls onto the bottom spiral screen plate, achieving ore grading. To improve the sorting efficiency, a screen sleeve is arranged on the side. The screen sleeve performs the same screening, and its screen allows particles with smaller apertures to pass through. Thus, smaller particles can enter the screen sleeve vertically and fall vertically downwards, achieving multi-stage sorting of the crushed ore.

[0042] Example 2 further illustrates the structure of the sieve sleeve and the outer sleeve.

[0043] In this embodiment, as shown Figure 5 As shown, a positioning seat 18 is provided on the outer side of the screen sleeve 15, and a positioning groove 17 is provided on the inner wall of the outer sleeve 16. The outer side of the outer sleeve 16 is fixed to the inner wall of the housing 1, and can be fixedly connected by a fixing rod. The positioning seat 18 is adapted to sit in the positioning groove 17 and can rotate along the positioning groove 17. A guide bucket 10 is provided at the upper part of the outer sleeve, and the outer side of the guide bucket 10 is fixed to the housing 1.

[0044] In this embodiment, the positioning structure is mainly arranged in the outer and upper areas to prevent the screened ore from falling into the trough. The outer sleeve 16 is a fixed structure, and the two are positioned to each other. It is fixedly connected to the inner wall of the housing 1 by a fixing rod, and also serves as the internal positioning base of the screen sleeve 15 to ensure the stable operation of the screening mechanism.

[0045] Example 3: This example provides a structure for material homogenization and dust suppression by spraying.

[0046] Furthermore, a feeding hopper 29 is provided on the upper part of the casing 1. A guide hopper 30 is provided at the center of the feeding hopper 29 via a fixed rod. A support rod 31 is fixed on the upper part of the guide hopper 30. A spray bar 32 that spreads outwards is provided on the upper part of the support rod 31. A nozzle 33 is provided on the spray bar 32. The nozzle 33 is connected to an external pump 34 via a water pipe. In this embodiment, the material is dispersed in all directions through the conical guide hopper 30. At the same time, the spray bar structure is arranged on it based on this.

[0047] Structurally, in this embodiment, the casing encloses the crushing and screening processes. The internal transmission structure is protected by a protective cover. The upper opening is used for adding ore. However, dust is easily generated during the crushing and screening process. To prevent dust from escaping from here, this embodiment has a dust suppression spray structure at the top to prevent dust from escaping during operation. In addition, the crushing and screening chambers are connected in the overall structure, resulting in good overall sealing.

[0048] Therefore, in this embodiment, the upper part of the feeding and dust suppression composite structure is arranged with the crushing, transmission, screening and receiving structures arranged downwards in sequence. The overall layout is reasonable and the overall sealing is good.

[0049] Example 4 is basically the same as Example 1, except that the structure of screening and receiving is further explained in this example.

[0050] Structurally, in order to accommodate different particle sizes, the distribution spacing of the spiral screen plates in this embodiment gradually increases from top to bottom, that is, the corresponding particle size moves within a space of corresponding size, avoiding jamming when the material moves; at the same time, the upper layer has a large material capacity, and as the sorting capacity gradually decreases, this embodiment reasonably arranges the capacity of each screening space to avoid wasting space.

[0051] Example 5 is basically the same as Example 1, except that the sieving structure is further explained in this example.

[0052] In this embodiment, an electromagnetic magnetic attractor is arranged vertically inside the central body. The electromagnetic magnetic attractor is connected to a power source via a switch. The power source is built into the central body. In this embodiment, the electromagnetic magnetic attractor can form a magnetic attraction structure inside the central body. When energized, it generates magnetism and attracts magnetic substances in the crushed ore. When a certain amount is accumulated, the electromagnetic magnetic attractor is de-energized and releases these ferrous substances, which can further filter the internal components of the ore.

[0053] Example 6 is basically the same as Example 1, except that the structure of the feed tube is further explained in this example.

[0054] This implementation example Figure 8As shown in the diagram, the feeding pipes 23 are distributed in a dispersed manner on different circumferences centered on the central fixed seat. This structure allows each receiving area to receive material evenly, thereby ensuring a stable gravity distribution in the receiving area and a relatively stable structure.

Claims

1. A crushing and screening equipment for mining production, characterized in that, The device includes a housing, a crushing mechanism, a power transmission mechanism, and a screening mechanism. The power transmission mechanism includes an upper bevel gear, a lower bevel gear, a support body, a power bevel gear, and a drive motor. The crushing mechanism includes a crushing cone, a bushing, and an eccentric bushing. A bushing is provided on the upper part of the housing. The support body is fixed to the inner wall of the housing by a support rod. The upper and lower bevel gears are rotatably mounted on the support body and are located on the upper and lower sides of the support body, respectively. The upper part of the upper bevel gear is connected to the crushing cone via the eccentric bushing. The inner end of the power bevel gear is connected to both the lower and upper bevel gears, and its outer end... The screening mechanism is connected to an external drive motor. It includes a central body, spiral screen plates, a screen sleeve, and an outer sleeve. The central body is connected to the lower bevel gear. The spiral screen plates are all fixed spirally on the outside of the central body. Multiple layers of spiral screen plates are spaced apart, with the mesh size gradually decreasing from top to bottom. The screen sleeve is fixed to the outside of the spiral screen plates, and its mesh size is smaller than that of the spiral screen plates. The outer sleeve is located on the outside of the screen sleeve. The screening space formed by the spiral screen plates is sealed at both the top and bottom, and the lower parts of the spiral screen plates have different lengths. Different spiral screen plates have different lower sections. There are corresponding feed inlets, spaced apart on different circumferences, with feed pipes extending downwards from the feed inlets. A central fixed body is located at the bottom of the machine casing, and the central body is rotatably mounted on the central fixed body. Multiple annular receiving areas are located on the outside of the central fixed body, and the feed pipes are connected to the receiving areas and can rotate around them. Multiple outwardly extending discharge pipes are located at the bottom or side of the receiving areas. The ore first falls onto the upper spiral screen plate. Due to its own gravity and rotation, the ore can fall spirally along the spiral screen plate, and during this process, the ore flows along the upper layer... The pores of the spiral screen plate enter the middle spiral screen plate, where secondary screening is performed, and finally the particles fall onto the bottom spiral screen plate. The screen sleeve performs the same screening, and its screen allows particles with smaller pore sizes to pass through, so that smaller particles can directly enter the screen sleeve and fall vertically downwards, realizing multi-stage separation after ore crushing. The distribution spacing of the spiral screen plates gradually increases from top to bottom. Multiple sleeves are distributed at intervals on the outside of the middle fixed body, and the material receiving area is formed between the sleeves. A downward spiraling guide plate is set at the bottom of the material receiving area. The feed pipes are distributed in a dispersed manner on different circumferences centered on the middle fixed body.

2. The crushing and screening equipment for mining production according to claim 1, characterized in that: The outer side of the screen sleeve is provided with a positioning seat, and the inner wall of the outer sleeve is provided with a positioning groove. Its outer side is fixed to the inner wall of the machine housing. The positioning seat is adapted to sit in the positioning groove and can rotate along the positioning groove.

3. The crushing and screening equipment for mining production according to claim 2, characterized in that: A guide bucket is provided at the upper part of the outer sleeve, and the outer side of the guide bucket is fixed to the machine casing.

4. The crushing and screening equipment for mining production according to claim 1, characterized in that: A protective cover is provided in the middle of the housing, which encloses the power transmission mechanism. Its side is connected to the side of the housing through a support body, and there is a discharge area between the support bodies.

5. The crushing and screening equipment for mining production according to claim 1, characterized in that: A feeding hopper is provided on the upper part of the machine casing. A guide hopper is provided in the center of the feeding hopper through a fixed rod. A support rod is fixed on the upper part of the guide hopper. A spray bar that spreads outwards is provided on the upper part of the support rod. A nozzle is provided on the spray bar. The nozzle is connected to an external pump through a water pipe.

6. The crushing and screening equipment for mining production according to claim 1, characterized in that: An electromagnetic accelerator is arranged vertically inside the central body. The electromagnetic accelerator is connected to a power source via a switch, and the power source is built into the central body.

7. The crushing and screening equipment for mining production according to any one of claims 1-6, characterized in that: The support body has an oil injection chamber in the middle, which is connected to the rotating structure on the upper and lower sides. An oil injection pipe extending outward is provided on the side wall of the oil injection chamber.

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