Low-grade ore recycling and crushing device and crushing process thereof

Abstract

The invention relates to the technical field of low-grade ore recycling and crushing, and discloses a low-grade ore recycling and crushing device which comprises an equipment shell, a mounting frame is fixedly mounted at the top of the equipment shell, a crushing equipment main body is fixedly mounted on the mounting frame, and a discharging opening is formed in the front face of the equipment shell; a screening mechanism is mounted in the equipment shell; the screening mechanism comprises a mounting base, the mounting base is fixedly mounted on the inner wall of the equipment shell, the crushed ore is screened through a screening plate, a center shaft is driven to rotate through a driving part, then the screening plate is driven to rotate, and when the screening plate rotates in a small range, the ore can be shaken to be scattered, so that the ore can be better screened; and meanwhile, the large ores are large in size and can be better shaken to the edge of the screening plate, and after leaking out of the material distribution opening, the ores roll into the material distribution opening from the screening plate.

Description

Technical Field

[0001] The invention relates to the technical field of low-grade ore recovery and crushing, in particular to a low-grade ore recovery and crushing device and a crushing process thereof. Background Art

[0002] Ore refers to a mineral aggregate from which useful components can be extracted or which itself has certain properties that can be utilized. It can be divided into metallic minerals and non-metallic minerals. Ore structure refers to the distribution characteristics reflected by the shape, size and spatial combination relationship of the mineral aggregates that make up the ore. Ore structure refers to the distribution characteristics reflected by the shape, size and spatial combination relationship of individual mineral crystal particles in the ore. It is generally divided into lean ore, ordinary ore and rich ore. Sometimes it is only divided into lean ore and rich ore. There is no unified standard for this division. Generally, each industrial department and mining area has its own calculation range. According to the properties of useful minerals contained and the characteristics of utilization, it is divided into two categories: metallic ore and non-metallic ore. Low-grade zinc oxide ore is a kind of mineral. In the process of processing and utilizing low-grade zinc oxide ore, it needs to be crushed; In order to improve the specifications of crushed ore to meet the requirements, existing crushing devices often set up screening structures inside the crushing device or at the discharge port of the crushing device. In order to discharge ore with larger particle size, the screening structure includes two major types. The first type is to use an inclined screening plate and utilize the ore to roll on the screening plate for screening. The large particles of ore will roll along the screening plate to the collection point, and the small particles of ore will fall through the sieve holes. Although this method can achieve continuous and rapid screening, there will be a large number of small ores rolling to the collection point with the large ores, and its screening efficiency is not high. The second type is to use a flat screening plate for screening. The large ore will remain on the screening plate, and the small ore will fall from the sieve holes, which can effectively prevent the problem of small ore rolling to the collection point with the large ore. However, this method requires workers to frequently clean up the large ore on the screening plate, which increases the workload of workers and does not significantly improve the screening efficiency. Summary of the invention

[0003] The object of the present invention is to provide a low-grade ore recovery and crushing device and a crushing process thereof to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a low-grade ore recovery and crushing device, comprising an equipment housing, a mounting frame is fixedly installed on the top of the equipment housing, a crushing equipment body is fixedly installed on the mounting frame, a discharge port is opened on the front of the equipment housing, and a screening mechanism is installed inside the equipment housing; The screening mechanism comprises a mounting seat, the mounting seat is fixedly mounted on the inner wall of the equipment shell, a screening bin is fixedly mounted on the outer wall of the mounting seat, a feeding port is opened at the top of the screening bin, a discharging port is opened at the bottom of the screening bin, a dividing port is opened on the right side of the screening bin, and the dividing port is located on the lower half of the screening bin, the inner wall of the screening bin is rotatably connected with a central shaft through a bearing, a screening plate is fixedly mounted on the outer wall of the central shaft, the screening plate divides the interior of the screening bin into spaces that are not connected to each other, an arc plate 1 is fixedly mounted on the top of the left end of the screening plate, and an arc plate 2 is fixedly mounted on the bottom of the right end of the screening plate, the outer side surfaces of the arc plate 1 and the arc plate 2 are attached to the inner wall of the screening bin, the inner diameters of the feeding port, the discharging port and the dividing port are the same, the outer diameters of the arc plate 1 and the arc plate 2 are larger than the inner diameters of the feeding port, the discharging port and the dividing port, a driving component is arranged at the rear of the screening bin, and the driving component is transmission connected with the central shaft.

[0005] Furthermore, the driving component includes an electric driving structure or a manual driving structure, the electric driving structure includes a reduction motor 1, the reduction motor 1 is fixedly mounted on the back of the equipment housing, a rotating shaft is fixedly mounted on the output end of the reduction motor 1, and the rotating shaft is connected to the central shaft through a pulley group.

[0006] Furthermore, the manual drive structure includes a connecting plate, a support plate, an upper limit plate, and a lower limit plate. The connecting plate is fixedly mounted on the rear end of the central axis, a rotating arm is fixedly mounted on the back side of the connecting plate, a guide groove is opened on the top of the rotating arm, the guide groove is close to the left end of the rotating arm, a slide is slidingly arranged inside the guide groove, a pull rope is fixedly mounted on the bottom of the slide, a counterweight is fixedly mounted on the bottom end of the pull rope, the support plate, the upper limit plate, and the lower limit plate are fixedly mounted on the back side of the screening bin, the counterweight falls on the support plate, and the right end of the rotating arm is located between the upper limit plate and the lower limit plate.

[0007] Furthermore, a material distribution pipe and a material discharge pipe are fixedly installed on the outer wall of the screening bin, the material distribution pipe is connected with the material distribution port, and the material discharge pipe is connected with the material discharge port.

[0008] Furthermore, a guide block is fixedly installed on the inner wall of the crushing equipment body, two guide blocks are provided and are parallel to the crushing roller in the crushing equipment body, and crushing teeth are fixedly installed on the outer wall of the guide block facing the crushing roller.

[0009] Furthermore, a spray frame is fixedly mounted on the upper surface of the material guide block, and a spray head is fixedly mounted on the outer wall of the spray frame on one side facing the crushing roller.

[0010] Furthermore, the outer walls of the arc plate 1 and the arc plate 2 are provided with water-permeable holes, the left half of the screening plate is a flat plate, and the right half of the screening plate is an inclined plate.

[0011] Furthermore, a material guide plate is fixedly mounted on the bottom inner wall of the device housing, and the front end of the material guide plate faces the discharge port.

[0012] Furthermore, a feed bin is fixedly installed on the outer wall of the mounting frame, a slide rail is fixedly installed on the inner side of the feed bin, a reduction motor 2 is fixedly installed on the outer wall of the feed bin, a reciprocating screw is fixedly installed on the output end of the reduction motor 2, a slider is provided on the threaded sleeve on the outer wall of the reciprocating screw, the slider is slidably set in the slide rail, and the bottom of the slider is rotatably connected to a material removing rod through a bearing.

[0013] A crushing process of a low-grade ore recovery and crushing device comprises the following steps: S1. Use conveying equipment to transport the ore into the feed bin; S2, move the material lever left and right to push the ore to the left and right; S3, the ore falls from the feed bin into the main body of the crushing equipment and is crushed by the crushing rollers in the main body of the crushing equipment; S4, open the spray head to spray water to the crushing roller; S5. The crushed ore enters the screening bin from the feed port; S6, the ore falls onto the screening plate and is screened. The small ore passes through the screening plate and is discharged from the discharge port, while the large ore remains on the screening plate; S7, the screening plate is driven to rotate by the central axis, so that the screening plate rotates back and forth at a small angle, and when the material distribution opening is not blocked by the arc plate 2, the large ore is thrown into the material distribution opening; S8. When there are a lot of ores remaining in the screening plate, the central axis drives the screening plate to rotate at a large angle, causing the entire distribution port to leak out. At this time, the feed port is blocked by the arc plate, and the large ores on the screening plate are discharged from the distribution port.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Use the screening plate to screen the crushed ore. The driving component drives the central shaft to rotate, and then drives the screening plate to rotate. When the screening plate rotates slightly, the ore can be shaken apart, so that the ore can be better screened. At the same time, large ore with large volume can be better shaken to the edge of the screening plate. After leaking out of the material distribution port, the ore rolls from the screening plate into the material distribution port. When the screening plate rotates at a large angle, the entire material distribution port is leaked. At this time, the screening plate has a large inclination angle, and the arc plate blocks the feed port. All the large ores on the screening plate fall into the material distribution port. This design can not only improve the screening efficiency of the ore, but also reduce the waste of small particles of ore. 2. The reciprocating screw is driven by the second reduction motor to rotate, so that the slider moves left and right, and then the material-moving rod moves left and right, which is used to move the ore in the feed bin apart, so that the ore is dispersed into the main body of the crushing equipment, which is convenient for the main body of the crushing equipment to crush the ore. In addition, because the material-moving rod is rotatable, it can be rotated by force when the material-moving rod moves the ore, which can avoid the material-moving rod and the ore from getting stuck; 3. When there are more large ores remaining on the screening plate, the screening plate will tilt, causing the distribution port to leak out, and the ore will be discharged from the distribution port. The tilt of the screening plate will drive the central axis to rotate, and the rotation of the central axis will drive the connecting plate to rotate, causing the rotating arm to rotate, and the rotation of the rotating arm will drive the slide to move, causing the pull rope to pull the counterweight block up, and the slide will slide along the guide groove toward the center of the rotating arm, so that the force arm acting on the left end of the rotating arm becomes smaller, so that the screening plate can maintain its tilt for a certain period of time, so that the large ore on the screening plate has enough time to roll into the distribution port. This method does not require electrical operation to automatically discharge the large ore on the screening plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the back view; Figure 3 For the present invention Figure 1 A schematic diagram of the structure in a front cross-sectional view; Figure 4 For the present invention Figure 1 A schematic diagram of the structure in a sectional view on the right side; Figure 5 It is a structural schematic diagram of a front cross-sectional view of a screening bin of the present invention; Figure 6 It is a structural schematic diagram of the electric drive structure of the present invention; Figure 7 It is a structural schematic diagram of the material guide block and the spray rack of the present invention; Figure 8 This is a schematic diagram of the structure of a top view of the feed bin of the present invention; Fig. 9 It is a structural schematic diagram of the slide rail, slide table and material-moving rod of the present invention; Fig.10 It is a structural schematic diagram of the manual drive structure of the present invention.

[0016] In the figure: 1. Equipment shell; 2. Mounting frame; 3. Crushing equipment body; 4. Discharge port; 5. Screening mechanism; 501. Mounting seat; 502. Screening bin; 503. Center axis; 504. Feed inlet; 505. Discharge port; 506. Distributing port; 507. Screening plate; 508. Curved plate 1; 509. Curved plate 2; 6. Distributing pipe; 7. Discharge pipe; 8. Driving component; 801. Reducer motor 1; 802. Rotating shaft; 803. 03. Connecting plate; 804. Rotating arm; 805. Guide groove; 806. Slide; 807. Pull rope; 808. Counterweight; 809. Support plate; 8010. Upper limit plate; 8011. Lower limit plate; 9. Material guide block; 10. Crushing teeth; 11. Spray rack; 12. Spray head; 13. Feed bin; 14. Slide rail; 15. Reciprocating screw; 16. Sliding block; 17. Material pusher; 18. Reducer motor 2; 19. Material guide plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0018] See also Figure 1-Figure 10 The present invention provides a technical solution: a low-grade ore recovery and crushing device, comprising an equipment housing 1, a mounting frame 2 is fixedly installed on the top of the equipment housing 1, a crushing equipment body 3 is fixedly installed on the mounting frame 2, a discharge port 4 is opened on the front of the equipment housing 1, and a screening mechanism 5 is installed inside the equipment housing 1; The screening mechanism 5 includes a mounting base 501, which is fixedly mounted on the inner wall of the device housing 1, and a screening bin 502 is fixedly mounted on the outer wall of the mounting base 501. A feed inlet 504 is provided at the top of the screening bin 502, and a discharge port 505 is provided at the bottom of the screening bin 502. A material distribution port 506 is provided on the right side of the screening bin 502, and the material distribution port 506 is located in the lower half of the screening bin 502. The inner wall of the screening bin 502 is rotatably connected to a central shaft 503 through a bearing, and the central shaft 503 is rotatably connected to the inner wall of the screening bin 502 through a bearing. The outer wall of the shaft 503 is fixedly mounted with a screening plate 507, which divides the interior of the screening bin 502 into mutually unconnected spaces. An arc plate 1 508 is fixedly mounted on the top of the left end of the screening plate 507, and an arc plate 2 509 is fixedly mounted on the bottom of the right end of the screening plate 507. The outer sides of the arc plates 1 508 and 2 509 are attached to the inner wall of the screening bin 502. The inner diameters of the feed port 504, the discharge port 505, and the distribution port 506 are the same. The arc plates 1 508 and 2 509 are fixedly mounted on the inner wall of the screening bin 502. The outer diameter of 09 is larger than the inner diameter of the feed port 504, the discharge port 505 and the material distribution port 506. A driving component 8 is arranged at the rear of the screening bin 502, and the driving component 8 is connected to the central shaft 503 by transmission. The screening plate 507 is used to screen the crushed ore. The central shaft 503 is driven to rotate by the driving component 8, and the screening plate 507 is driven to rotate. When the screening plate 507 rotates slightly, the ore can be shaken apart, so that the ore can be better screened. At the same time, the larger the volume of the ore, the more The large ore can be shaken to the edge of the screening plate 507 better. After leaking out of the material distribution port 506, the ore rolls from the screening plate 507 into the material distribution port 506. When the screening plate 507 rotates at a large angle, the material distribution port 506 is completely leaked out. At this time, the screening plate 507 has a large inclination angle, and the arc plate 1 508 blocks the feed port 504. The large ore on the screening plate 507 all falls into the material distribution port 506. This design can not only improve the screening efficiency of the ore, but also reduce the waste of small particle ore. The driving component 8 includes an electric driving structure or a manual driving structure. The electric driving structure includes a reduction motor 801. The reduction motor 801 is fixedly mounted on the back of the device housing 1. A rotating shaft 802 is fixedly mounted on the output end of the reduction motor 801. The rotating shaft 802 is connected to the central shaft 503 through a pulley group. The reduction motor 801 drives the rotating shaft 802 to rotate, thereby driving the central shaft 503 to rotate. The outer wall of the screening bin 502 is fixedly mounted with a material distribution pipe 6 and a material discharge pipe 7. The material distribution pipe 6 is connected to the material distribution port 506, and the material discharge pipe 7 is connected to the material discharge port 505. A guide block 9 is fixedly installed on the inner wall of the crushing equipment body 3. Two guide blocks 9 are provided and are parallel to the crushing roller in the crushing equipment body 3. A crushing tooth 10 is fixedly installed on the outer wall of the guide block 9 facing the crushing roller. The guide block 9 is provided to guide the ore to the crushing roller in the crushing equipment body 3. The crushing tooth 10 can cooperate with the crushing roller to crush the ore. A spray rack 11 is fixedly installed on the upper surface of the guide block 9, and a spray head 12 is fixedly installed on the outer wall of the spray rack 11 facing the crushing roller. Water is sprayed to the crushing roller through the spray head 12, so that the water and the ore are mixed together, which can increase the fluidity of the ore, cool the crushing roller, and reduce the working fatigue of the crushing roller; The outer walls of the arc plate 1 508 and the arc plate 2 509 are provided with water-permeable holes. The left half of the screening plate 507 is a flat plate, and the right half of the screening plate 507 is an inclined plate. The water-permeable holes are provided on the arc plate 1 508 and the arc plate 2 509, so that when the arc plate 1 508 blocks the feed port 504, water can still flow into the screening bin 502, and then impact the ore on the screening plate 507, accelerating the ore to roll into the feed port 506; A guide plate 19 is fixedly mounted on the bottom inner wall of the equipment housing 1, and the front end of the guide plate 19 faces the discharge port 4. The screened ore is guided to the discharge port 4 by the guide plate 19, so that workers can take out the ore easily. A feed bin 13 is fixedly mounted on the outer wall of the mounting frame 2, a slide rail 14 is fixedly mounted on the inner side of the feed bin 13, a reduction motor 18 is fixedly mounted on the outer wall of the feed bin 13, a reciprocating screw 15 is fixedly mounted on the output end of the reduction motor 18, a slider 16 is threadedly sleeved on the outer wall of the reciprocating screw 15, the slider 16 is slidably arranged in the slide rail 14, a material-push rod 17 is rotatably connected to the bottom of the slider 16 through a bearing, the reciprocating screw 15 is driven to rotate by the reduction motor 18, so that the slider 16 moves left and right, and then drives the material-push rod 17 to move left and right, so as to push the ore in the feed bin 13 away, so that the ore is dispersed into the crushing equipment body 3, so as to facilitate the crushing equipment body 3 to crush the ore, and because the material-push rod 17 is rotatable, when the material-push rod 17 moves the ore, it can be rotated by force, so as to avoid the material-push rod 17 and the ore being stuck.

[0019] Working principle: When in use, the conveying equipment is used to convey the ore to the feed bin 13, and the reduction motor 18 is turned on to drive the reciprocating screw 15 to rotate, so that the slider 16 moves left and right, and then drives the material-moving rod 17 to move left and right, which is used to push the ore in the feed bin 13 apart, so that the ore is dispersed into the crushing equipment body 3, and the crushing equipment body 3 crushes the ore, and the spray head 12 is turned on to spray water to the crushing roller, and the crushed ore enters the screening bin 502 from the feed port 504, and the ore falls on the screening plate 507 to be screened, and the small ore passes through the screening plate 507 and is discharged from the discharge port 502. 05 is discharged, and the large ore remains on the screening plate 507. The reduction motor 801 is turned on to drive the rotating shaft 802 to rotate, and then the central shaft 503 is driven to rotate. The central shaft 503 drives the screening plate 507 to rotate, so that the screening plate 507 rotates back and forth at a small angle. When the distribution port 506 is not blocked by the arc plate 509, the large ore is thrown into the distribution port 506, and the central shaft 503 drives the screening plate 507 to rotate a large angle, so that the entire distribution port 506 leaks out. At this time, the feed port 504 is blocked by the arc plate 508, and the large ore on the screening plate 507 is discharged from the distribution port 506. Embodiment 2

[0020] See also Fig.10 The present invention provides a technical solution: a low-grade ore recovery and crushing device, comprising an equipment housing 1, a mounting frame 2 is fixedly installed on the top of the equipment housing 1, a crushing equipment body 3 is fixedly installed on the mounting frame 2, a discharge port 4 is opened on the front of the equipment housing 1, and a screening mechanism 5 is installed inside the equipment housing 1; The screening mechanism 5 includes a mounting base 501, which is fixedly mounted on the inner wall of the device housing 1, and a screening bin 502 is fixedly mounted on the outer wall of the mounting base 501. A feed inlet 504 is provided at the top of the screening bin 502, and a discharge port 505 is provided at the bottom of the screening bin 502. A material distribution port 506 is provided on the right side of the screening bin 502, and the material distribution port 506 is located in the lower half of the screening bin 502. The inner wall of the screening bin 502 is rotatably connected to a central shaft 503 through a bearing, and a screening plate 507 is fixedly mounted on the outer wall of the central shaft 503. The screening plate 507 screens the inside of the screening bin 502. The sieve plate 507 is divided into spaces that are not connected to each other. An arc plate 1 508 is fixedly installed on the top of the left end of the sieve plate 507, and an arc plate 2 509 is fixedly installed on the bottom of the right end of the sieve plate 507. The outer side surfaces of the arc plate 1 508 and the arc plate 2 509 are attached to the inner wall of the sieve bin 502. The inner diameters of the feed port 504, the discharge port 505, and the dividing port 506 are the same. The outer diameters of the arc plate 1 508 and the arc plate 2 509 are larger than the inner diameters of the feed port 504, the discharge port 505, and the dividing port 506. A driving component 8 is arranged at the rear of the sieve bin 502, and the driving component 8 is transmission-connected to the central shaft 503. The driving component 8 includes an electric driving structure or a manual driving structure. The manual drive structure includes a connecting plate 803, a supporting plate 809, an upper limit plate 8010, and a lower limit plate 8011. The connecting plate 803 is fixedly mounted on the rear end of the central shaft 503. A rotating arm 804 is fixedly mounted on the back of the connecting plate 803. A guide groove 805 is provided on the top of the rotating arm 804. The guide groove 805 is close to the left end of the rotating arm 804. A slide 806 is slidably arranged inside the guide groove 805. A pull rope 807 is fixedly mounted on the bottom of the slide 806. A counterweight 808 is fixedly mounted on the bottom end of the pull rope 807. The supporting plate 809, the upper limit plate 8010, and the lower limit plate 8011 are fixedly mounted on the back of the screening bin 502. The counterweight 808 falls on the supporting plate 809. The right end of the rotating arm 804 is located between the upper limit plate 8010 and the lower limit plate 8011. When there are more large ores remaining on the screening plate 507, the screening plate 507 will tilt, causing the distribution port 506 to leak out, and the ores will be discharged from the distribution port 506. The tilting of the screening plate 507 will drive the central shaft 503 to rotate, and the rotation of the central shaft 503 will drive the connecting plate 803 to rotate, so that the rotating arm 804 rotates, and the rotation of the rotating arm 804 drives the slide 806 to move, so that the pull rope 807 pulls the counterweight block 808 to rise, and the slide 806 will slide along the guide groove 805 toward the center of the rotating arm 804, so that the force arm acting on the left end of the rotating arm 804 becomes smaller, so that the screening plate 507 can maintain its tilt for a certain period of time, so that the large ores on the screening plate 507 have enough time to roll into the distribution port 506. This method does not require electrical operation, and can automatically discharge the large ores on the screening plate 507. The outer wall of the screening bin 502 is fixedly mounted with a material distribution pipe 6 and a material discharge pipe 7. The material distribution pipe 6 is connected to the material distribution port 506, and the material discharge pipe 7 is connected to the material discharge port 505. A guide block 9 is fixedly installed on the inner wall of the crushing equipment body 3. Two guide blocks 9 are provided and are parallel to the crushing roller in the crushing equipment body 3. A crushing tooth 10 is fixedly installed on the outer wall of the guide block 9 facing the crushing roller. A spray frame 11 is fixedly mounted on the upper surface of the material guide block 9, and a spray head 12 is fixedly mounted on the outer wall of the spray frame 11 facing the crushing roller; The outer walls of the arc plate 1 508 and the arc plate 2 509 are provided with water-permeable holes. The left half of the screening plate 507 is a flat plate, and the right half of the screening plate 507 is an inclined plate. A material guide plate 19 is fixedly mounted on the bottom inner wall of the equipment housing 1, and the front end of the material guide plate 19 faces the discharge port 4; A feed bin 13 is fixedly mounted on the outer wall of the mounting frame 2, a slide rail 14 is fixedly mounted on the inner side of the feed bin 13, a reduction motor 18 is fixedly mounted on the outer wall of the feed bin 13, a reciprocating screw rod 15 is fixedly mounted on the output end of the reduction motor 18, a slider 16 is threadedly sleeved on the outer wall of the reciprocating screw rod 15, the slider 16 is slidably arranged in the slide rail 14, and a material removing rod 17 is rotatably connected to the bottom of the slider 16 through a bearing.

[0021] Working principle: When in use, the conveying equipment is used to convey the ore to the feed bin 13, and the reduction motor 18 is turned on to drive the reciprocating screw 15 to rotate, so that the slider 16 moves left and right, and then drives the material-moving rod 17 to move left and right, which is used to push the ore in the feed bin 13 away, so that the ore is dispersed into the crushing equipment body 3, and the crushing equipment body 3 crushes the ore, and the spray head 12 is turned on to spray water to the crushing roller, and the crushed ore enters the screening bin 502 from the feed port 504, and the ore falls on the screening plate 507 to be screened. The small ore passes through the screening plate 507 and is discharged from the discharge port 505, and the large ore remains on the screening plate 507. When more large ores remain on the screening plate 507, the screening plate 507 will tilt. The distribution port 506 will leak out, and the ore will be discharged from the distribution port 506, and the inclination of the screening plate 507 will drive the central axis 503 to rotate, and the rotation of the central axis 503 will drive the connecting plate 803 to rotate, so that the rotating arm 804 will rotate, and the rotation of the rotating arm 804 will drive the slide 806 to move, so that the pull rope 807 pulls the counterweight block 808 to rise, and the slide 806 will slide along the guide groove 805 toward the center of the rotating arm 804, so that the force arm acting on the left end of the rotating arm 804 becomes smaller, so that the screening plate 507 can maintain its inclination for a certain period of time, so that the large ore on the screening plate 507 has enough time to roll into the distribution port 506. This method does not require electrical operation to automatically discharge the large ore on the screening plate 507. Embodiment 3

[0022] See also Figure 1-Figure 9 The present invention provides a technical solution: a crushing process of a low-grade ore recovery and crushing device, comprising the following steps: S1, using conveying equipment to transport ore into the feed bin 13; S2, by moving the material-moving rod 17 left and right, the ore is pushed left and right, so that the ore is dispersed into the crushing equipment body 3, so that the crushing equipment body 3 can crush the ore; S3, the ore falls from the feed bin 13 into the crushing equipment body 3 and is crushed by the crushing rollers in the crushing equipment body 3; S4, open the spray head 12 to spray water to the crushing roller, so that the water and the ore are mixed together, which can increase the fluidity of the ore, and cool the crushing roller to reduce the working fatigue of the crushing roller; S5, the crushed ore enters the screening bin 502 from the feed port 504; S6, the ore falls onto the screening plate 507 and is screened. Small ore passes through the screening plate 507 and is discharged from the discharge port 505, while large ore remains on the screening plate 507; S7, the screening plate 507 is driven to rotate by the central shaft 503, so that the screening plate 507 reciprocates at a small angle, and when the material distribution opening 506 is not blocked by the arc plate 2 509, the large ore is thrown into the material distribution opening 506; S8. When there are a lot of ores remaining in the screening plate 507, the central axis 503 drives the screening plate 507 to rotate a large angle, so that the entire distribution port 506 leaks out. At this time, the feed port 504 is blocked by the arc plate 508, and the large ores on the screening plate 507 are discharged from the distribution port 506.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A low-grade ore recovery and crushing device, comprising a device housing (1), a mounting frame (2) fixedly mounted on the top of the device housing (1), a crushing device body (3) fixedly mounted on the mounting frame (2), a discharge port (4) opened on the front of the device housing (1), characterized in that: A screening mechanism (5) is installed inside the device housing (1); The screening mechanism (5) comprises a mounting seat (501), wherein the mounting seat (501) is fixedly mounted on the inner wall of the device housing (1), a screening bin (502) is fixedly mounted on the outer wall of the mounting seat (501), a feeding port (504) is provided at the top of the screening bin (502), a discharging port (505) is provided at the bottom of the screening bin (502), a material distribution port (506) is provided on the right side of the screening bin (502), and the material distribution port (506) is located in the lower half of the screening bin (502), the inner wall of the screening bin (502) is rotatably connected to a central shaft (503) via a bearing, a screening plate (507) is fixedly mounted on the outer wall of the central shaft (503), and the screening plate (507) connects the screening bin (502) to the central shaft (503). 2) The interior is divided into spaces that are not connected to each other. An arc plate 1 (508) is fixedly installed on the top of the left end of the screening plate (507), and an arc plate 2 (509) is fixedly installed on the bottom of the right end of the screening plate (507). The outer side surfaces of the arc plate 1 (508) and the arc plate 2 (509) are attached to the inner wall of the screening bin (502). The inner diameters of the feed port (504), the discharge port (505), and the dividing port (506) are the same. The outer diameters of the arc plate 1 (508) and the arc plate 2 (509) are larger than the inner diameters of the feed port (504), the discharge port (505), and the dividing port (506). A driving component (8) is arranged at the rear of the screening bin (502), and the driving component (8) is transmission-connected to the central shaft (503).

2. A low-grade ore recovery and crushing device according to claim 1, characterized in that: The driving component (8) comprises an electric driving structure or a manual driving structure, wherein the electric driving structure comprises a reduction motor (801), wherein the reduction motor (801) is fixedly mounted on the back of the device housing (1), and a rotating shaft (802) is fixedly mounted on the output end of the reduction motor (801), wherein the rotating shaft (802) is transmission-connected to the central shaft (503) via a pulley set.

3. A low-grade ore recovery and crushing device according to claim 2, characterized in that: The manual drive structure comprises a connecting plate (803), a supporting plate (809), an upper limit plate (8010), and a lower limit plate (8011); the connecting plate (803) is fixedly mounted on the rear end of the central shaft (503); a rotating arm (804) is fixedly mounted on the back of the connecting plate (803); a guide groove (805) is provided on the top of the rotating arm (804); the guide groove (805) is close to the left end of the rotating arm (804); a sliding arrangement is provided inside the guide groove (805). A slide (806) is provided, a pull rope (807) is fixedly installed at the bottom of the slide (806), a counterweight (808) is fixedly installed at the bottom end of the pull rope (807), the support plate (809), the upper limit plate (8010), and the lower limit plate (8011) are fixedly installed on the back of the screening bin (502), the counterweight (808) falls on the support plate (809), and the right end of the rotating arm (804) is located between the upper limit plate (8010) and the lower limit plate (8011).

4. The low-grade ore recovery and crushing device according to claim 1, characterized in that: A material distribution pipe (6) and a material discharge pipe (7) are fixedly mounted on the outer wall of the screening bin (502); the material distribution pipe (6) is in communication with the material distribution port (506), and the material discharge pipe (7) is in communication with the material discharge port (505).

5. The low-grade ore recovery and crushing device according to claim 1 is characterized in that: A material guide block (9) is fixedly mounted on the inner wall of the crushing equipment body (3), two material guide blocks (9) are provided and are parallel to the crushing roller in the crushing equipment body (3), and a crushing tooth (10) is fixedly mounted on the outer wall of the material guide block (9) on one side facing the crushing roller.

6. A low-grade ore recovery and crushing device according to claim 5, characterized in that: A spray frame (11) is fixedly mounted on the upper surface of the material guide block (9), and a spray head (12) is fixedly mounted on the outer wall of the spray frame (11) on one side facing the crushing roller.

7. The low-grade ore recovery and crushing device according to claim 1, characterized in that: The outer walls of the arc-shaped plate 1 (508) and the arc-shaped plate 2 (509) are provided with water-permeable holes. The left half of the screening plate (507) is a flat plate, and the right half of the screening plate (507) is an inclined plate.

8. The low-grade ore recovery and crushing device according to claim 1, characterized in that: A material guide plate (19) is fixedly mounted on the bottom inner wall of the equipment housing (1), and the front end of the material guide plate (19) faces the material discharge port (4).

9. The low-grade ore recovery and crushing device according to claim 1, characterized in that: A feed bin (13) is fixedly mounted on the outer wall of the mounting frame (2), a slide rail (14) is fixedly mounted on the inner side of the feed bin (13), a second reduction motor (18) is fixedly mounted on the outer wall of the feed bin (13), a reciprocating screw rod (15) is fixedly mounted on the output end of the second reduction motor (18), a slider (16) is threadedly sleeved on the outer wall of the reciprocating screw rod (15), the slider (16) is slidably arranged in the slide rail (14), and the bottom of the slider (16) is rotatably connected to a material removing rod (17) via a bearing.

10. A crushing process for a low-grade ore recovery and crushing device, characterized in that: The following steps are involved: S1, using conveying equipment to transport the ore into a feed bin (13); S2, the ore is pushed to the left and right by moving the material pusher (17) to the left and right; S3, the ore falls from the feed bin (13) into the crushing device body (3) and is crushed by the crushing rollers in the crushing device body (3); S4, opening the spray head (12) to spray water onto the crushing roller; S5, the crushed ore enters the screening bin (502) from the feed inlet (504); S6, the ore falls onto the screening plate (507) and is screened, small ore passes through the screening plate (507) and is discharged from the discharge port (505), and large ore remains on the screening plate (507); S7, driving the screening plate (507) to rotate via the central shaft (503), so that the screening plate (507) reciprocates at a small angle, and when the material distribution opening (506) is not blocked by the second arc plate (509), the large ore is thrown into the material distribution opening (506); S8. When a large amount of ore remains in the screening plate (507), the central shaft (503) drives the screening plate (507) to rotate at a large angle, so that the entire material distribution port (506) leaks out. At this time, the feed port (504) is blocked by the arc plate 1 (508), and the large ore on the screening plate (507) is discharged from the material distribution port (506).

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