A crusher ore drying and crushing dust recovery system

Abstract

The present invention discloses a crusher ore drying and crushing dust recovery system, comprising a base and a frame, an eccentric shaft connected to the frame, a rear end sealing cover and a front end sealing cover connected above the frame; the front end sealing cover and the rear end sealing cover slide and cooperate in a vertical direction, a lifting mechanism for driving the front end sealing cover to rise and fall is provided on the outside of the frame; a feed conveyor is installed at the front end of the top of the frame, and an ore microwave drying system is connected above the feed conveyor; a static jaw is provided at the front end of the frame, a movable jaw matching the static jaw is connected to the eccentric shaft, a connecting plate is hinged at the bottom rear end of the movable jaw, the other end of the connecting plate is hinged to the frame, a transmission plate is connected at the top rear end of the movable jaw, and the other end of the transmission plate is connected to a dust recovery device; the base is hollow inside and is connected to a discharge conveyor. The present invention can dry the ore to be crushed, recover the dust generated by crushing, reduce ore loss, and avoid secondary water pollution caused by wet crushing.

Description

Technical Field

[0001] The invention belongs to the technical field of crushers, and in particular relates to a crusher ore drying and crushing dust recovery system. Background Art

[0002] The crusher consists of two jaw plates, a movable jaw and a static jaw, which form a crushing chamber. The crusher uses the two jaw plates to squeeze and bend the material to complete the material crushing operation. It is one of the main crushing equipment for various ores and large materials in industries such as mining and smelting, building materials, roads, railways, water conservancy and chemical industry. It is widely used for its simple structure, low cost and high crushing efficiency.

[0003] With the continuous advancement of industrialization, the amount of ore processed by humans has gradually increased. As a vital resource, ore is widely used in various industries. Crusher is usually used for initial coarse crushing, but this process often produces a large amount of dust. Methods such as spraying and watering are often used to control ore crushing dust, but water can reduce ore quality and affect the price. Therefore, to ensure high ore quality, wet dust removal methods such as spraying and foaming are rarely used during the ore crushing process. In addition, the dust generated by ore crushing is often discarded as waste, which not only wastes ore resources but also degrades the working environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a crusher ore drying and crushing dust recovery system, which can dry the ore to be crushed, recover the dust generated by crushing, reduce ore loss, and avoid secondary water pollution caused by wet crushing.

[0005] To achieve the above-mentioned object, the present invention provides a crusher ore drying and crushing dust recovery system, comprising a base and a frame connected to the base, an eccentric shaft connected to the frame, a driving mechanism for driving the eccentric shaft to rotate connected to the outside of the frame, and a rear end sealing cover and a front end sealing cover connected to both sides of the eccentric shaft above the frame;

[0006] The rear sealing cover is fixed on the frame, the front sealing cover and the rear sealing cover slide together in the vertical direction, and a lifting mechanism for driving the front sealing cover to rise and fall is provided on the outside of the frame;

[0007] A feed conveyor belt with an integrated weight sensor is installed at the front end of the frame top. The ore microwave drying system is connected above the feed conveyor belt. The rear ends of the feed conveyor belt and the ore microwave drying system are both in contact with the outer surface of the front sealing cover.

[0008] A static jaw is provided at the front end of the frame, and a movable jaw that matches the static jaw is connected to the eccentric shaft. A connecting plate is hinged to the rear end of the bottom of the movable jaw, and the other end of the connecting plate is hinged to the frame. A transmission plate is connected to the rear end of the top of the movable jaw, and the other end of the transmission plate is connected to the dust recovery device.

[0009] The base is hollow inside and is connected to a discharge conveyor belt. A discharge port is provided on the upper surface of the base corresponding to the movable jaw. A feeding chamber is provided on the frame below the dust recovery device. A push rod mechanism is provided in the feeding chamber. The end of the feeding chamber away from the push rod mechanism extends to the outside of the frame and is connected to the inside of the base through a recovery channel. A flip door is provided at the connection between the recovery channel and the feeding chamber.

[0010] As a further solution of the present invention: the dust recovery device includes a dust collecting box, a compression cavity is provided in the dust collecting box, an annular piston is connected to the compression cavity, a first valve is connected to the bottom of the annular piston, a piston rod is connected to the top of the annular piston through a support rod, a gap is provided between the annular piston and the piston rod, a slider is connected to the top of the piston rod, a vertically arranged slide is connected to the fixed frame in the rear end sealing cover above the frame, the slider slides in cooperation with the slide, the side of the slider is slidably connected to the transmission plate, the bottom end of the compression cavity is connected to the feeding cavity, and is connected to the second valve.

[0011] As a further solution of the present invention: a strip groove is provided on the transmission plate, and an adjusting column is provided on the slider to slide with the strip groove.

[0012] As a further solution of the present invention: ramp blocks fixedly connected to the frame are provided on both sides of the compression cavity above the dust collecting box.

[0013] As a further solution of the present invention: the lifting mechanism includes Y-shaped vertical rods symmetrically arranged on both sides of the frame, and the bottom of the vertical rods is a telescopic rod;

[0014] A vacuum suction cup is connected to the side of the top of the vertical pole facing the front sealing cover, a vacuum pump is connected to the frame, and the vacuum pump and the vacuum suction cup are connected through a ventilation pipe;

[0015] A rack is provided in the middle of the upright pole, a lifting motor is connected to the frame, a gear meshing with the rack is connected to the power output end of the lifting motor, and a control box connected to the lifting motor is provided on the front sealing cover;

[0016] A limit plate is slidably sleeved on the vertical rod above the rack, the other end of the limit plate is fixed on the frame, and a limit block is connected to the vertical rod above the limit plate.

[0017] As a further solution of the present invention: the ore microwave drying system includes a drying chamber, a flexible curtain is installed at the entrance of the drying chamber, a camera with an integrated infrared thermometer is installed above the flexible curtain, a temperature sensor for obtaining the outlet temperature of the drying chamber is provided between the drying chamber and the front sealing cover, and a drying device and a dehumidification system are connected to the top of the drying chamber.

[0018] As a further solution of the present invention: the drying device is equipped with several magnetrons, the microwave power of the magnetrons is adjusted by a control device on the drying device, the magnetrons are connected to a metal waveguide, and circulating water pipes are embedded in the side walls of the drying chamber, the inside of the feed conveyor belt and the heat sink of the magnetrons, and the circulating water pipes are connected to a water pump.

[0019] As a further solution of the present invention: the metal waveguide tube has a rectangular structure, and adjacent metal waveguide tubes are arranged perpendicular to each other.

[0020] As a further solution of the present invention: the steps for adjusting the magnetron microwave power are as follows:

[0021] S1. Calculate the microwave power used to heat the ore using the following formula:

[0022]

[0023] Where, P1: microwave power used to heat the ore, kW; t: time required for the ore to pass through the microwave drying chamber, h; T0, T1: temperature of the ore entering and leaving the drying chamber during the time t, °C; C: specific heat of the ore, kcal / kg / °C; M: weight of the material measured by the weight sensor, kg;

[0024] S2. Calculate the microwave power used to evaporate the water in the material. The formula is as follows:

[0025]

[0026] Where, P2: microwave power used to evaporate water in the material, kW; Q: latent heat of evaporation or heat of vaporization of the liquid contained in the material; ω0: initial moisture content of the processed ore, %; ω1: expected moisture content after drying, %; other symbols are the same as above;

[0027] S3. Calculate the total power used for microwave drying. The specific formula is as follows:

[0028]

[0029] Where, P0: ideal power consumed by microwave drying, kW; P: actual power consumed by microwave drying, kW; η: microwave absorption efficiency, %; other symbols have the same meanings as those in S1 and S2;

[0030] S4. The real-time image of the camera is uploaded to the cloud processing center through the control device for visual recognition. At the same time, the actual power P consumed by microwave drying is calculated based on the real-time feed amount of the ore and the formulas in S1 to S3. The cloud processing center then feeds back the information to the control device to make corresponding adjustments to the magnetron, dynamically adjusting and matching the microwave drying power in real time.

[0031] As a further solution of the present invention: the driving mechanism includes a rotating motor connected to the frame, and the power output end of the rotating motor is connected to a transmission wheel coaxially arranged with the eccentric shaft through a transmission belt.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The frame, rear sealing cover and front sealing cover cooperate with each other to form a closed system, which can avoid the impact of external annularity during the ore crushing process;

[0034] Different from the traditional wet spraying operation, the ore is dried in advance by the ore microwave drying system before crushing, avoiding secondary pollution and sewage treatment in the later stage.

[0035] The dust recovery device can be used to compress the dust generated during the crushing process, make it into blocks and output it uniformly, reducing the loss of ore and lowering production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of the crusher ore drying and crushing dust recovery system of the present invention;

[0037] Figure 2 It is a schematic diagram of the internal structure of the crusher ore drying and crushing dust recovery system of the present invention.

[0038] Figure 3 It is a structural schematic diagram of the dust recovery device of the present invention.

[0039] Figure 4 Schematic diagram of the internal structure of the drying chamber of the present invention.

[0040] Figure 5 It is a structural schematic diagram of the flexible curtain of the present invention.

[0041] In the figure: 1, base, 2, recycling channel, 3, frame, 4, rear end sealing cover, 5, front end sealing cover, 6, drying chamber, 7, dehumidification system, 8, drying device, 9, control device, 10, camera, 11, feeding conveyor belt, 12, control box, 13, vacuum suction cup, 14, vertical pole, 15, limit block, 16, gear, 17, rack, 18, telescopic rod, 19, lifting motor, 20, limit plate, 21, ventilation pipe, 22, transmission wheel, 23, vacuum pump, 24, rotating motor, 25, transmission belt, 26, flip Revolving door, 27. Dust box, 28. Fixed frame, 29. Slide, 30. Slider, 31. Transmission plate, 32. Moving jaw, 33. Static jaw, 34. Connecting plate, 35. Feeding port, 36. Discharging conveyor belt, 37. Pushing mechanism, 38. Feeding cavity, 39. Strip groove, 40. Adjusting column, 41. Piston rod, 42. Support rod, 43. Annular piston, 44. First valve, 45. Ramp block, 46. Second valve, 47. Magnetron, 48. Metal waveguide tube, 49. Circulating water pipe, 50. Water pump, 51. Flexible curtain. DETAILED DESCRIPTION

[0042] The present invention will be further described below by way of examples.

[0043] like Figure 1 and Figure 2 As shown, a crusher ore drying and crushing dust recovery system includes a base 1 and a frame 3 connected to the base 1. The frame 3 is connected to an eccentric shaft. The outer side of the frame 3 is connected to a driving mechanism for driving the eccentric shaft to rotate. A rear end sealing cover 4 and a front end sealing cover 5 are connected to both sides of the eccentric shaft above the frame 3.

[0044] The rear sealing cover 4 is fixed on the frame 3, and the front sealing cover 5 slides with the rear sealing cover 4 in the vertical direction. A lifting mechanism for driving the front sealing cover 5 to rise and fall is provided on the outside of the frame 3;

[0045] A feed conveyor belt 11 with an integrated weight sensor is installed at the front end of the top of the frame 3. The ore microwave drying system is connected above the feed conveyor belt 11. The rear ends of the feed conveyor belt 11 and the ore microwave drying system are both in contact with the outer surface of the front sealing cover 5.

[0046] A static jaw 33 is provided at the front end of the frame 3. A movable jaw 32 that cooperates with the static jaw 33 is connected to the eccentric shaft. A connecting plate 34 is hinged to the bottom rear end of the movable jaw 32. The other end of the connecting plate 34 is hinged to the frame 3. A transmission plate 31 is connected to the top rear end of the movable jaw 32. The other end of the transmission plate 31 is connected to a dust recovery device.

[0047] The base 1 is hollow inside and is connected to a discharge conveyor belt 36. A discharge port 35 is provided on the upper surface of the base 1 corresponding to the movable jaw 32. A feeding chamber 38 is provided on the frame 3 below the dust recovery device. A push rod mechanism is provided in the feeding chamber 38. One end of the feeding chamber 38 away from the push rod mechanism extends to the outside of the frame 3 and is connected to the inside of the base 1 through the recovery channel 2. A flip door 26 is provided at the connection between the recovery channel 2 and the feeding chamber 38.

[0048] Further, such as Figure 3 As shown, the dust recovery device includes a dust box 27, a compression cavity is provided in the dust box 27, an annular piston 43 is connected to the compression cavity, a first valve 44 is connected to the bottom of the annular piston 43, a piston rod 41 is connected to the top of the annular piston 43 through a support rod 42, a gap is provided between the annular piston 43 and the piston rod 41, a slider 30 is connected to the top of the piston rod 41, and a vertically arranged slide 29 is connected to the fixed frame 28 in the rear end sealing cover 4 above the frame 3. The slider 30 slides with the slide 29, and the side of the slider 30 is slidably connected to the transmission plate 31. The bottom end of the compression cavity is communicated with the feeding cavity 38 and is connected to the second valve 46. A distance sensor is provided at the top of the compression cavity.

[0049] During the movement of the movable jaw 32, the transmission plate 31 will be driven to move. The sliding connection between the transmission plate 31 and the slider 30 is used to drive the slider 30 to rise and fall on the slide 29. When the first piston rises, the first valve 44 opens, thereby crushing the dust in the crusher. When the first piston descends, the first valve 44 closes, and the air pressure in the compression cavity is used to compress the sucked dust into blocks. The block accumulation situation in the compression cavity is judged by the distance sensor. When the preset value is reached, the second valve 46 is opened to drop the block dust into the feeding cavity 38, and the push rod mechanism pushes it to the recovery channel 2, and finally output it along the discharge conveyor 36.

[0050] Furthermore, a strip groove 39 is provided on the transmission plate 31, and a strip groove 39 is provided on the slider 30 to slide with the adjusting column 40. The adjusting column 40 can slide horizontally in the strip groove 39 on the transmission plate 31. The sliding of the adjusting column 40 offsets the horizontal movement of the cam movement of the transmission plate 31 and the movable jaw 32. At the same time, since the slide 29 is fixed by the fixing frame 28, the slider 30 can only perform vertical lifting movement on the slide 29.

[0051] Furthermore, above the dust box 27, slope blocks 45 fixedly connected to the frame 3 are provided on both sides of the compression cavity. During the process of crushing the ore by the movable jaw 32 and the static jaw 33, some debris will be ejected, and the slope on the surface of the slope block 45 can guide the debris into the compression cavity.

[0052] Further, such as Figure 1 As shown, the lifting mechanism includes a Y-shaped vertical rod 14 symmetrically arranged on both sides of the frame 3, and the bottom of the vertical rod 14 is a telescopic rod 18;

[0053] A vacuum suction cup 13 is connected to the top of the upright pole 14 on one side facing the front sealing cover 5, a vacuum pump 23 is connected to the frame 3, and the vacuum pump 23 is connected to the vacuum suction cup 13 via a vent pipe 21;

[0054] A rack 17 is provided in the middle of the upright pole 14, a lifting motor 19 is connected to the frame 3, a gear 16 meshing with the rack 17 is connected to the power output end of the lifting motor 19, and a control box 12 is provided on the front sealing cover 5 for communication with the lifting motor 19;

[0055] A limit plate 20 is slidably sleeved on the vertical rod 14 above the rack 17 . The other end of the limit plate 20 is fixed to the frame 3 . The limit block 15 is connected to the vertical rod 14 above the limit plate 20 .

[0056] The vacuum suction cup 13 is controlled by the vacuum pump 23 to be firmly adsorbed on the front sealing cover 5, and then the gear 16 is driven to rotate by the lifting motor 19. The meshing action of the gear 16 and the rack 17 is used to control the lifting of the vertical rod 14, thereby realizing the lifting and lowering control of the front sealing cover 5. When the limit block 15 contacts the limit plate 20, the front sealing cover 5 is in close contact with the frame 3.

[0057] Further, such as Figure 1 and Figure 5 As shown, the ore microwave drying system includes a drying chamber 6, a flexible curtain 51 is installed at the entrance of the drying chamber 6, a camera 10 with an integrated infrared thermometer is installed above the flexible curtain 51, a temperature sensor for obtaining the outlet temperature of the drying chamber 6 is provided between the drying chamber 6 and the front sealing cover 5, and a drying device 8 and a dehumidification system 7 are connected to the top of the drying chamber 6.

[0058] The inner side of the flexible curtain 51 is provided with a honeycomb metal structure to prevent microwave leakage.

[0059] Further, such as Figure 4 As shown, the drying device is equipped with a plurality of magnetrons 47. The microwave power of the magnetrons 47 is adjusted by the control device 9 on the drying device 8. A metal waveguide 48 is connected to the magnetrons 47. Circulating water pipes 49 are embedded in the side walls of the drying chamber 6, the inside of the feed conveyor belt 11 and the heat sink of the magnetrons 47. A water pump 50 is connected to the circulating water pipes 49.

[0060] The water in the circulation pipe is heated by the heat sink of the magnetron 47, passes through the side wall of the drying chamber 6 and the inside of the feed conveyor 11, and is then lifted to the drying device 8 by the water pump 50, and returns to the inside of the heat sink of the magnetron 47, completing one cycle; the waste heat from the operation of the magnetron 47 is used to further increase the temperature of the ore in the drying chamber 6, accelerate the evaporation of water, save energy and improve the drying effect.

[0061] Furthermore, the metal waveguide tubes 48 are rectangular in structure, and adjacent metal waveguide tubes 48 are arranged perpendicular to each other to prevent the generated microwaves from interfering with each other.

[0062] Furthermore, the steps for adjusting the microwave power of the magnetron 47 are as follows:

[0063] S1. Calculate the microwave power used to heat the ore using the following formula:

[0064]

[0065] Where, P1: microwave power used to heat the ore, kW; t: time required for the ore to pass through the microwave drying chamber, h; T0, T1: temperature of the ore entering and leaving the drying chamber during the time t, °C; C: specific heat of the ore, kcal / kg / °C; M: weight of the material measured by the weight sensor, kg;

[0066] S2. Calculate the microwave power used to evaporate the water in the material. The formula is as follows:

[0067]

[0068] Where, P2: microwave power used to evaporate water in the material, kW; Q: latent heat of evaporation or heat of vaporization of the liquid contained in the material; ω0: initial moisture content of the processed ore, %; ω1: expected moisture content after drying, %; other symbols are the same as above;

[0069] S3. Calculate the total power used for microwave drying. The specific formula is as follows:

[0070]

[0071] Where, P0: ideal power consumed by microwave drying, kW; P: actual power consumed by microwave drying, kW; η: microwave absorption efficiency, %; other symbols have the same meanings as those in S1 and S2;

[0072] S4. The real-time image of the camera is uploaded to the cloud processing center through the control device for visual recognition. At the same time, the actual power P consumed by microwave drying is calculated based on the real-time feed amount of ore and the formulas in S1 to S3. The cloud processing center then feeds back the information to the control device 9 to adjust the magnetron 47 accordingly, and dynamically adjusts the microwave drying power in real time.

[0073] Further, such as Figure 1 As shown, the driving mechanism includes a rotary motor 24 connected to the frame 3, and a power output end of the rotary motor 24 is connected to a transmission wheel 22 coaxially arranged with the eccentric shaft through a transmission belt 25.

[0074] When the present invention is used specifically: ore is fed in through the feed conveyor belt 11, the camera 10 estimates the distance of the ore entering the drying chamber 6, and cooperates with the weight sensor inside the feed conveyor belt 11 to obtain the approximate weight of the ore within a fixed distance outside the entrance of the drying chamber 6. At the same time, the temperature of the ore entering the drying chamber 6 is measured and recorded, and the temperature sensor set between the drying chamber 6 and the front sealing cover 5 obtains the outlet temperature of the drying chamber 6, thereby adjusting the microwave power to achieve energy-saving and efficient drying of the ore and the feed inlet air.

[0075] For example, 30kg of ore passes through the drying chamber in one minute. The temperatures of the ore entering and leaving the drying chamber are 20℃ and 40℃ respectively. The initial moisture content of the ore is 25%, and the moisture content after drying is 5%. The ideal power consumed by microwave drying at this time is:

[0076]

[0077] The microwave absorption efficiency is generally 0.5 to 0.8, and here we take 0.7. Therefore, the actual power consumed by microwave drying is:

[0078] The dried ore is crushed by the cooperation of the movable jaw 32 and the static jaw 33, and the crushed ore enters the discharge conveyor 36 from the discharge port 35 and is discharged outward; during the movement of the movable jaw 32, the transmission plate 31 will drive the piston rod 41 to rise and fall, thereby forming a suction effect and a compression effect, thereby compressing the debris ejected during the crushing process and the dust generated into blocks in the compression cavity. When the preset value of the distance sensor is reached, the second valve 46 is opened to send the block dust to the feeding chamber 38, and the pushing mechanism 37 sends the block dust to the recovery channel 2, and finally enters the discharge conveyor 36 for outward output.

Claims

1. A crusher ore drying and crushing dust recovery system, comprising a base (1) and a frame (3) connected to the base (1), an eccentric shaft connected to the frame (3), and a driving mechanism for driving the eccentric shaft to rotate connected to the outside of the frame (3), characterized in that: A rear sealing cover (4) and a front sealing cover (5) are connected to both sides of the eccentric shaft above the frame (3); The rear end sealing cover (4) is fixed on the frame (3), the front end sealing cover (5) and the rear end sealing cover (4) are slidably matched in the vertical direction, and a lifting mechanism for driving the front end sealing cover (5) to rise and fall is provided on the outside of the frame (3); A feed conveyor belt (11) with an integrated weight sensor is installed at the front end of the top of the frame (3), and an ore microwave drying system is connected above the feed conveyor belt (11). The rear ends of the feed conveyor belt (11) and the ore microwave drying system are both in contact with the outer surface of the front sealing cover (5); A static jaw (33) is provided at the front end of the frame (3), a movable jaw (32) matched with the static jaw (33) is connected to the eccentric shaft, a connecting plate (34) is hingedly connected to the bottom rear end of the movable jaw (32), the other end of the connecting plate (34) is hingedly connected to the frame (3), a transmission plate (31) is connected to the top rear end of the movable jaw (32), and the other end of the transmission plate (31) is connected to a dust recovery device; The base (1) is hollow inside and is connected to a discharge conveyor belt (36). A discharge port (35) is provided on the upper surface of the base (1) corresponding to the movable jaw (32). A feeding chamber (38) is provided on the frame (3) below the dust recovery device. A push rod mechanism is provided in the feeding chamber (38). The feeding chamber (38) extends from one end of the feeding chamber (38) away from the push rod mechanism to the outside of the frame (3) and is connected to the inside of the base (1) through the recovery channel (2). A flip door (26) is provided at the connection between the recovery channel (2) and the feeding chamber (38). The dust recovery device includes a dust collecting box (27), a compression cavity is provided in the dust collecting box (27), an annular piston (43) is connected to the compression cavity, a first valve (44) is connected to the bottom of the annular piston (43), a piston rod (41) is connected to the top of the annular piston (43) through a support rod (42), a gap is provided between the annular piston (43) and the piston rod (41), a slider (30) is connected to the top of the piston rod (41), a vertically arranged slideway (29) is connected to the rear end sealing cover (4) above the frame (3) through a fixed frame (28), the slider (30) is slidably matched with the slideway (29), the side of the slider (30) is slidably connected to the transmission plate (31), the bottom end of the compression cavity is communicated with the feeding cavity (38), and is connected to the second valve (46).

2. A crusher ore drying and crushing dust recovery system according to claim 1, characterized in that: The transmission plate (31) is provided with a strip groove (39), and the slider (30) is provided with a strip groove (39) that slidably matches the adjustment column (40).

3. A crusher ore drying and crushing dust recovery system according to claim 1 or 2, characterized in that: Above the dust collecting box (27), slope blocks (45) are provided on both sides of the compression cavity and are fixedly connected to the frame (3).

4. A crusher ore drying and crushing dust recovery system according to claim 1, characterized in that: The lifting mechanism comprises a Y-shaped vertical rod (14) symmetrically arranged on both sides of the frame (3), and the bottom of the vertical rod (14) is a telescopic rod (18); A vacuum suction cup (13) is connected to one side of the top of the vertical rod (14) facing the front sealing cover (5), a vacuum pump (23) is connected to the frame (3), and the vacuum pump (23) and the vacuum suction cup (13) are connected via a vent pipe (21); A rack (17) is provided in the middle of the vertical pole (14), a lifting motor (19) is connected to the frame (3), a power output end of the lifting motor (19) is connected to a gear (16) meshed with the rack (17), and a control box (12) is provided on the front sealing cover (5) for communication with the lifting motor (19); A limit plate (20) is slidably sleeved on the vertical rod (14) above the rack (17), the other end of the limit plate (20) is fixed on the frame (3), and a limit block (15) is connected to the vertical rod (14) above the limit plate (20).

5. A crusher ore drying and crushing dust recovery system according to claim 1, characterized in that: The ore microwave drying system includes a drying chamber (6), a flexible curtain (51) is installed at the entrance of the drying chamber (6), a camera (10) with an integrated infrared thermometer is installed above the flexible curtain (51), a temperature sensor for obtaining the outlet temperature of the drying chamber (6) is provided between the drying chamber (6) and the front sealing cover (5), and a drying device (8) and a dehumidification system (7) are connected to the top of the drying chamber (6).

6. A crusher ore drying and crushing dust recovery system according to claim 5, characterized in that: The drying device (8) is equipped with a plurality of magnetrons (47). The microwave power of the magnetrons (47) is adjusted by a control device (9) on the drying device (8). A metal waveguide tube (48) is connected to the magnetrons (47). A circulating water pipe (49) is embedded in the side wall of the drying chamber (6), the inside of the feed conveyor belt (11), and the heat sink of the magnetrons (47). A water pump (50) is connected to the circulating water pipe (49).

7. A crusher ore drying and crushing dust recovery system according to claim 6, characterized in that: The metal waveguide tube (48) is a rectangular structure, and adjacent metal waveguide tubes (48) are arranged perpendicular to each other.

8. A crusher ore drying and crushing dust recovery system according to claim 7, characterized in that: The steps for adjusting the microwave power of the magnetron (47) are as follows: S1. Calculate the microwave power used to heat the ore using the following formula: Where, P 1: Microwave power used to heat the ore, kW; t: time required for the ore to pass through the microwave drying chamber, h; T 0. T 1: Temperature of ore entering and leaving the drying chamber within time t, °C; C : Specific heat of ore, kcal / kg / ℃; M : The weight of the material measured by the weight sensor, kg; S2. Calculate the microwave power used to evaporate the water in the material. The formula is as follows: Where, P 2: The microwave power used to evaporate the water in the material, kW; Q : Latent heat of evaporation or heat of vaporization of the liquid contained in the material; ω0: Initial moisture content of the processed ore, %; ω1: Expected moisture content after drying, %; Other symbols are the same as above; S3. Calculate the total power used for microwave drying. The specific formula is as follows: Where, P 0: ideal power consumed by microwave drying, kW; P : actual power consumed by microwave drying, kW; η : Microwave absorption efficiency, %; The rest of the symbols have the same meanings as those in S1 and S2; S4. The real-time image of the camera is uploaded to the cloud processing center through the control device for visual recognition. At the same time, the actual power consumed by the microwave drying is calculated based on the real-time feed amount of the ore and the formula in S1~S3. P , and then the cloud processing center feeds back the information to the control device (9) to adjust the magnetron (47) accordingly, and dynamically adjust and match the microwave drying power in real time.

9. A crusher ore drying and crushing dust recovery system according to claim 1, characterized in that: The driving mechanism includes a rotating motor (24) connected to the frame (3), and a power output end of the rotating motor (24) is connected to a transmission wheel (22) coaxially arranged with the eccentric shaft through a transmission belt (25).

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