A magnetic separation and screening device for ore production

Abstract

The present invention relates to a screening device, and in particular to a magnetic separation and screening device for ore production. It is necessary to design a magnetic separation and screening device for ore production that can intermittently add ore for screening to ensure thorough separation. A magnetic separation and screening device for ore production includes a separation bottom cylinder, a supporting base, a feeding bucket and a fixed central axis. The lower parts of the left and right sides of the separation bottom cylinder are fixedly connected with supporting bases, the upper left side of the separation bottom cylinder is connected with a feeding bucket, and the middle of the separation bottom cylinder is fixedly connected with a fixed central axis. The present invention pours an appropriate amount of ore into the feeding bucket, starts the servo motor, and the opening of the material separation column rotates forward to intermittently discharge the ore into the separation bottom cylinder, and then the soil is discharged into the left collection container, and the iron ore is adsorbed on the outer wall of the separation cylinder through the adsorption magnetic plate. Then, when the iron ore rotates forward to the lower right, it is not adsorbed by the adsorption magnetic plate and is discharged into the right collection container. In this way, ore can be intermittently added for screening to ensure thorough separation.

Description

Technical Field

[0001] The present invention relates to a screening device, in particular to a magnetic separation and screening device for ore production. Background Art

[0002] Iron is divided into pig iron and steel according to its carbon content. In order to improve the purity of the iron in the product, most iron ore needs to be screened before entering the blast furnace.

[0003] Chinese patent publication number CN216125807U discloses an iron ore magnetic separation device for ore mining, comprising a magnetic separation device body, a body support column, an iron ore conveying support frame, and a conveying support frame. The body support columns are fixedly mounted around the bottom of the magnetic separation device body, and the iron ore conveying support frame is fixedly mounted on the right side of the magnetic separation device body. The conveying support frame is fixedly mounted on the right side of the magnetic separation device body. Although the above patent can achieve ore screening, the ore feed rate needs to be manually controlled, and sometimes too much ore is poured in, which easily accumulates and causes incomplete separation.

[0004] Based on the defects in the above patents, it is necessary to design a magnetic separation and screening device for ore production that can intermittently add ore for screening to ensure thorough separation. Summary of the Invention

[0005] In order to overcome the disadvantage that the amount of ore feed needs to be manually controlled, sometimes too much ore is poured in, and too much ore is easily accumulated, resulting in incomplete separation. The present invention provides a magnetic separation and screening device for ore production that can intermittently add ore for screening to ensure complete separation.

[0006] The technical solution of the present invention is:

[0007] A magnetic separation and screening device for ore production includes a separation bottom cylinder, a supporting base, a feed bucket, a fixed central axis, an adsorption magnetic plate and a separation cylinder. The supporting bases are fixedly connected to the lower parts of the left and right sides of the separation bottom cylinder, the feed bucket is connected to the upper left side of the separation bottom cylinder, the fixed central axis is fixedly connected to the middle of the separation bottom cylinder, and the adsorption magnetic plate for adsorbing iron ore is fixedly connected to the middle of the fixed central axis. It also includes a driving mechanism and a material distribution mechanism. The separation cylinder is rotatably provided on the fixed central axis, the adsorption magnetic plate is located in the separation cylinder, and the separation bottom cylinder is provided with a driving mechanism for providing power to drive the separation cylinder to rotate. A material distribution mechanism for intermittently discharging ore is provided between the feed bucket and the separation cylinder.

[0008] Furthermore, it also includes a guide plate and a positioning rod. The guide plate is fixedly connected to the upper left side of the feed bucket, and four positioning rods are fixedly connected at even intervals between the feed bucket and the separation bottom cylinder.

[0009] Furthermore, the driving mechanism includes a servo motor, a reversing short shaft, a driving gear and a driven gear ring. The servo motor is fixedly connected to the front side of the outer top wall of the separation bottom cylinder. The reversing short shaft is rotatably provided on the upper middle part of the front side of the separation bottom cylinder. The output shaft of the servo motor and the reversing short shaft are transmitted through a synchronous belt assembly. The driving gear is fixedly connected to the middle of the reversing short shaft, and the driven gear ring is fixedly connected to the front of the separation cylinder. The driven gear ring is meshed with the driving gear.

[0010] Furthermore, the material distribution mechanism includes an acceleration belt assembly, a transmission short shaft and an open-hole material distribution column. The transmission short shafts are rotatably provided on the front and rear sides of the lower part of the feed bucket. The acceleration belt assembly is connected between the transmission short shaft and the separation cylinder. The acceleration belt assembly consists of two pulleys and belts. One pulley is installed on the rear transmission short shaft, and the other pulley is installed at the rear of the separation cylinder. The belt is wound between the two pulleys. The middle part of the transmission short shaft is fixed with an open-hole material distribution column for driving the intermittent discharge of ore. The open-hole material distribution column is located in the feed bucket.

[0011] Furthermore, it also includes a spreading mechanism for evenly spreading the ore, the spreading mechanism includes a positioning gear, a first driven gear, a slotted short shaft, a positioning cylinder, a first articulated connecting rod, a positioning cross frame and a guide inclined plate, the front part of the front transmission short shaft is fixed with a positioning gear, the front side of the lower part of the feed bucket is rotatably provided with a slotted short shaft, the rear part of the slotted short shaft is fixed with a first driven gear, the first driven gear is engaged with the positioning gear, a positioning cylinder is slidably provided on the slotted short shaft, seven guide inclined plates for evenly spreading the ore are rotatably provided at intervals at the lower part of the feed bucket, a positioning cross frame is rotatably provided between the left parts of the guide inclined plates, and a first articulated connecting rod is rotatably provided between the positioning cross frame and the positioning cylinder.

[0012] Furthermore, it also includes a throwing mechanism for throwing up the ore, and the throwing mechanism includes a second driven gear, a positioning cam, a second articulated connecting rod, a positioning seat, a throwing inclined plate, an articulated connecting plate and a torsion spring. A positioning cam is rotatably provided on the middle and lower side of the front part of the separation bottom cylinder, and a second driven gear is fixedly connected to the middle part of the positioning cam. The second driven gear is meshed with the driven gear ring. A throwing inclined plate for throwing up the ore is rotatably provided on the lower left side of the separation bottom cylinder, and a positioning seat is fixedly connected to the front of the throwing inclined plate. A second articulated connecting rod is rotatably provided between the positioning seat and the eccentric position of the positioning cam, and a hinged connecting plate is rotatably provided at the lower part of the throwing inclined plate. A torsion spring is symmetrically connected front to back between the throwing inclined plate and the articulated connecting plate.

[0013] Furthermore, it also includes a cleaning mechanism for cleaning the separation cylinder, the cleaning mechanism includes a fixed base plate, a cleaning brush and a reset spring. The lower part of the separation cylinder is fixedly connected to the fixed base plate, and a cleaning brush for cleaning the separation cylinder is slidably provided on the fixed base plate. The cleaning brush is in contact with the separation cylinder, and four reset springs are evenly spaced and connected between the cleaning brush and the fixed base plate.

[0014] Furthermore, it also includes a dust-proof mechanism for preventing dust from being raised. The dust-proof mechanism includes a fixed frame and a dust cover. The lower part of the separation bottom cylinder is fixedly connected to the fixed frame, and the left and right sides of the fixed frame are connected to dust covers for preventing dust from being raised.

[0015] The beneficial effects are:

[0016] 1. Pour an appropriate amount of ore into the feed hopper, start the servo motor, and the open-hole dividing column rotates forward to discharge the ore intermittently into the separation bottom cylinder. Then the soil is discharged into the collection container on the left, and the iron ore is adsorbed on the outer wall of the separation cylinder through the adsorption magnetic plate. Then, when the iron ore rotates forward to the lower right, it is not adsorbed by the adsorption magnetic plate and is discharged into the collection container on the right. In this way, ore can be added intermittently for screening to ensure thorough separation.

[0017] 2. Under the action of the spreading mechanism, the positioning cross frame moves back and forth, driving the guide inclined plate to swing back and forth. The guide inclined plate swings back and forth to spread the ore evenly, thereby increasing the contact area between the ore and the separation cylinder and improving the screening efficiency.

[0018] 3. Under the action of the throwing mechanism, the throwing inclined plate swings left and right to throw the soil into contact with the separation cylinder. If there is iron ore remaining in the soil, it will be adsorbed on the outer wall of the separation cylinder. At the same time, the left and right swing of the throwing inclined plate also drives the left and right swing of the hinged connecting plate, which stirs the soil to ensure smooth feeding. In this way, it can avoid blockage of soil and mixing with iron ore to affect the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure from a second viewing angle of the present invention.

[0021] Figure 3 This is a schematic diagram of a first partial cross-sectional structure of the present invention.

[0022] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the driving mechanism of the present invention.

[0023] Figure 5 It is a partial cross-sectional structural schematic diagram of the material distribution mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of a second partial cross-sectional structure of the present invention.

[0025] Figure 7 This is a schematic diagram of a first partial cross-sectional structure of the material spreading mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of a second partial cross-sectional structure of the material spreading mechanism of the present invention.

[0027] Figure 9 This is a schematic diagram of a first partial cross-sectional structure of the throwing mechanism of the present invention.

[0028] Figure 10 This is a schematic diagram of a second partial cross-sectional structure of the throwing mechanism of the present invention.

[0029] Figure 11 This is a schematic diagram of a third partial cross-sectional structure of the throwing mechanism of the present invention.

[0030] Figure 12 This is a schematic diagram of a third partial cross-sectional structure of the present invention.

[0031] Figure 13 It is a schematic diagram of the partial cross-sectional structure of the cleaning mechanism of the present invention.

[0032] Figure 14 It is a partial cross-sectional structural diagram of the dustproof mechanism of the present invention.

[0033] Figure 15 It is a schematic diagram of the three-dimensional structure of the adsorption magnetic plate of the present invention.

[0034] Parts names and serial numbers in the figure: 1_Separation bottom cylinder, 2_Support chassis, 3_Feeding bucket, 4_Guide plate, 5_Fixed middle shaft, 6_Adsorption magnetic plate, 7_Separation cylinder, 8_Positioning pole, 9_Drive mechanism, 91_Servo motor, 92_Reversing short shaft, 93_Drive gear, 94_Driven ring gear, 10_Material distribution mechanism, 101_Acceleration belt assembly, 102_Transmission short shaft, 103_Opening distribution column, 11_Spreading mechanism, 111_Positioning gear, 112_First driven gear, 113_ Slotted short shaft, 114_positioning cylinder, 115_first hinged connecting rod, 116_positioning cross frame, 117_material guide inclined plate, 12_material throwing mechanism, 121_second driven gear, 122_positioning cam, 123_second hinged connecting rod, 124_positioning seat, 125_material throwing inclined plate, 126_hinge connecting plate, 127_torsion spring, 13_cleaning mechanism, 131_fixed bottom plate, 132_cleaning brush, 133_reset spring, 14_dustproof mechanism, 141_fixed frame, 142_dust cover. DETAILED DESCRIPTION

[0035] The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] A magnetic separation and screening device for ore production, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 15 As shown, it includes a separation bottom cylinder 1, a support base 2, a feed bucket 3, a guide plate 4, a fixed central axis 5, an adsorption magnetic plate 6, a separation cylinder 7, a positioning vertical rod 8, a drive mechanism 9 and a material distribution mechanism 10. The bottom of the separation bottom cylinder 1 is provided with two left and right discharge ports. The lower parts of the left and right sides of the separation bottom cylinder 1 are connected to the support base 2 by welding. The upper left side of the separation bottom cylinder 1 is connected to the feed bucket 3. The upper left side of the feed bucket 3 is connected to the guide plate 4 by bolt connection. The middle of the separation bottom cylinder 1 is fixed with a fixed central axis. Shaft 5, an adsorption magnetic plate 6 is fixed in the middle of the fixed central shaft 5, and the adsorption magnetic plate 6 can adsorb the iron ore. A separation cylinder 7 is rotatably provided on the fixed central shaft 5, and the adsorption magnetic plate 6 is located in the separation cylinder 7. Four positioning vertical rods 8 are evenly spaced and fixed between the feed bucket 3 and the separation bottom cylinder 1. A driving mechanism 9 is provided on the separation bottom cylinder 1, and the driving mechanism 9 can provide power to drive the separation cylinder 7 to rotate. A material distribution mechanism 10 is provided between the feed bucket 3 and the separation cylinder 7, and the material distribution mechanism 10 can realize intermittent discharge of ore.

[0038] like Figure 3 and Figure 4 As shown, the driving mechanism 9 includes a servo motor 91, a reversing short shaft 92, a driving gear 93 and a driven ring gear 94. The servo motor 91 is connected to the front side of the outer top wall of the separation bottom cylinder 1 by bolt connection. The reversing short shaft 92 is rotatably provided on the upper and middle part of the front side of the separation bottom cylinder 1. The output shaft of the servo motor 91 and the reversing short shaft 92 are transmitted through a synchronous belt assembly. The driving gear 93 is fixed to the middle part of the reversing short shaft 92, and the driven ring gear 94 is fixed to the front part of the separation cylinder 7. The driven ring gear 94 is meshed with the driving gear 93.

[0039] like Figure 3 and Figure 5 As shown, the dividing mechanism 10 includes an accelerating belt assembly 101, a transmission short shaft 102 and an open-hole dividing column 103. The transmission short shaft 102 is rotatably provided on both the front and rear sides of the lower part of the feed bucket 3. The accelerating belt assembly 101 is connected between the rear transmission short shaft 102 and the separation cylinder 7. The accelerating belt assembly 101 consists of two pulleys and a belt. One pulley is installed on the rear transmission short shaft 102, and the other pulley is installed at the rear of the separation cylinder 7. The belt is wound between the two pulleys. An open-hole dividing column 103 is fixed between the inner ends of the front and rear transmission short shafts 102. The open-hole dividing column 103 is located in the feed bucket 3. When the open-hole dividing column 103 rotates, the open-hole dividing column 103 can drive the ore to be discharged intermittently.

[0040] First, the operator places two collection containers respectively under the separation bottom cylinder 1, and then pours an appropriate amount of ore into the feed bucket 3, starts the servo motor 91, and the servo motor 91 drives the reversing short shaft 92 to reverse through the synchronous belt assembly, and the reversing short shaft 92 reverses to drive the driving gear 93 to reverse, and the driving gear 93 reverses to drive the driven ring gear 94 to rotate forward, and the driven ring gear 94 rotates forward to drive the separation cylinder 7 to rotate forward, and the separation cylinder 7 rotates forward to drive the acceleration belt assembly 101 to rotate forward, and the acceleration belt assembly 101 rotates forward to drive the transmission short shaft 102 to rotate forward, and the transmission short shaft 102 rotates forward to drive the opening distribution column 103 to rotate forward, and the opening distribution column 103 rotates forward to discharge the ore intermittently into the separation bottom cylinder 1 to avoid a large amount of ore piling up and causing blockage. The situation affects the separation effect. Subsequently, the soil in the ore is discharged into the left collecting container through the left discharge port of the separation bottom cylinder 1, and the iron ore is adsorbed on the outer wall of the separation cylinder 7 through the adsorption magnetic plate 6. At the same time, the separation cylinder 7 rotates forward to drive the iron ore to rotate forward. When the iron ore rotates forward to the lower right, it is not adsorbed by the adsorption magnetic plate 6. The iron ore is discharged into the right collecting container through the right discharge port of the separation bottom cylinder 1. This process is repeated to continuously screen the ore. At the same time, after all the ore screening is completed, the servo motor 91 is turned off, and the servo motor 91 stops driving the reversing short shaft 92 to reverse through the synchronous belt assembly. The separation cylinder 7 also stops rotating forward, and the open hole separation column 103 also stops rotating forward. Then the two collection containers are picked up separately for subsequent processing of the soil and iron ore.

[0041] Example 2

[0042] On the basis of Example 1, Figure 6-Figure 8 As shown, it also includes a spreading mechanism 11, which includes a positioning gear 111, a first driven gear 112, a slotted short shaft 113, a positioning cylinder 114, a first hinged link 115, a positioning cross frame 116 and a guide inclined plate 117. The front part of the front transmission short shaft 102 is fixed with a positioning gear 111, and the front side of the lower part of the feed bucket 3 is rotatably provided with a slotted short shaft 113. The rear of the slotted short shaft 113 is fixed with a first driven gear 112, the first driven gear 112 is meshed with the positioning gear 111, and a positioning cylinder 114 is slidably provided on the slotted short shaft 113. Seven guide inclined plates 117 are rotatably provided at intervals at the lower part of the feed bucket 3. The guide inclined plates 117 can realize uniform spreading of ore. A positioning cross frame 116 is rotatably provided between the left parts of the guide inclined plates 117, and a first hinged link 115 is rotatably provided between the positioning cross frame 116 and the positioning cylinder 114.

[0043] like Figure 6 、 Figure 9 、 Figure 10 and Figure 11As shown, it also includes a throwing mechanism 12, which includes a second driven gear 121, a positioning cam 122, a second hinged connecting rod 123, a positioning seat 124, a throwing inclined plate 125, a hinged connecting plate 126 and a torsion spring 127. A positioning cam 122 is rotatably provided on the lower middle side of the front of the separation bottom cylinder 1. The middle part of the positioning cam 122 is fixedly connected to the second driven gear 121. The second driven gear 121 is meshed with the driven gear ring 94. A throwing inclined plate 125 is rotatably provided on the lower left side of the separation bottom cylinder 1. The throwing inclined plate 125 can throw the ore up. A positioning seat 124 is fixed to the front of the throwing inclined plate 125. A second hinged connecting rod 123 is rotatably provided between the positioning seat 124 and the eccentric position of the positioning cam 122. A hinged connecting plate 126 is rotatably provided at the lower part of the throwing inclined plate 125. A torsion spring 127 is symmetrically connected front to back between the throwing inclined plate 125 and the hinged connecting plate 126.

[0044] When the servo motor 91 is working, the front transmission short shaft 102 rotates forward and drives the positioning gear 111 to rotate forward. The positioning gear 111 rotates forward and drives the first driven gear 112 to reverse. The first driven gear 112 reverses and drives the slotted short shaft 113 to reverse. The slotted short shaft 113 reverses and drives the positioning cylinder 114 to move forward and backward. The positioning cylinder 114 moves forward and backward and drives the positioning cross frame 116 to move forward and backward through the first hinge link 115. The positioning cross frame 116 moves forward and backward and drives the guide inclined plate 117 to swing forward and backward. The guide inclined plate 117 swings back and forth to spread the ore evenly. After all the ore is screened, the servo motor 91 is turned off, the transmission short shaft 102 stops and drives the first driven gear 112 to reverse through the positioning gear 111. The guide inclined plate 117 also stops swinging back and forth. In this way, the contact area between the ore and the separation cylinder 7 can be increased to improve the screening efficiency.

[0045] When the soil in the ore rolls down through the left side of the separation bottom cylinder 1, the soil contacts the throwing inclined plate 125, and the separation cylinder 7 rotates forward to drive the driven gear ring 94 to rotate forward, and the driven gear ring 94 rotates forward to drive the second driven gear 121 to reverse, and the second driven gear 121 reverses to drive the positioning cam 122 to reverse, and the positioning cam 122 reverses to drive the positioning seat 124 to swing left and right through the second hinge link 123, and the positioning seat 124 swings left and right to drive the throwing inclined plate 125 to swing left and right, and the throwing inclined plate 125 swings left and right to throw the soil up and contact the separation cylinder 7, as shown in FIG. The iron ore remaining in the soil will be adsorbed on the outer wall of the separation cylinder 7. At the same time, the left and right swing of the throwing inclined plate 125 also drives the left and right swing of the hinged connecting plate 126. The left and right swing of the hinged connecting plate 126 stirs the soil to ensure smooth material discharge. The torsion spring 127 plays a buffering role. After all the ore screening is completed, the servo motor 91 is turned off, and the separation cylinder 7 stops driving the second driven gear 121 to reverse through the driven ring gear 94. The throwing inclined plate 125 also stops swinging left and right. In this way, it can avoid the blockage of soil and the mixing of iron ore to affect the screening efficiency.

[0046] Example 3

[0047] On the basis of Example 1 and Example 2, Figure 12 and Figure 13 As shown, it also includes a cleaning mechanism 13, which includes a fixed base plate 131, a cleaning brush 132 and a reset spring 133. The fixed base plate 131 is fixedly connected to the lower part of the separation base cylinder 1, and a cleaning brush 132 is slidably provided on the fixed base plate 131. The cleaning brush 132 is in contact with the separation cylinder 7. The cleaning brush 132 can clean the separation cylinder 7. Four reset springs 133 are evenly spaced and connected between the cleaning brush 132 and the fixed base plate 131.

[0048] like Figure 12 and Figure 14 As shown, it also includes a dustproof mechanism 14, which includes a fixed frame 141 and a dust cover 142. The fixed frame 141 is fixedly connected to the lower part of the separation bottom cylinder 1, and the left and right sides of the fixed frame 141 are connected to the dust cover 142. The dust cover 142 corresponds to the discharge port, and the dust cover 142 can prevent dust from being raised during discharge.

[0049] When the servo motor 91 is working, the separation cylinder 7 rotates forward, driving the iron ore to rotate forward. When the iron ore rotates forward to the lower right, it is not adsorbed by the adsorption magnetic plate 6. The iron ore is discharged into the right collection container through the right discharge port of the separation bottom cylinder 1, and the separation cylinder 7 rotates forward and contacts the cleaning brush 132. The cleaning brush 132 cleans the outer wall of the separation cylinder 7. Due to the action of the reset spring 133, the cleaning brush 132 can be in close contact with the separation cylinder 7. In this way, it can avoid the iron ore from falling and affecting the collection due to factors such as static electricity.

[0050] First, the operator places two collection containers directly under the left and right dust covers 142 respectively. After the ore is screened, the soil falls into the collection container through the left dust cover 142, and the iron ore falls into the other collection container through the right dust cover 142, thereby ensuring that the environment at the discharge point is clean and tidy. In this way, dust can be avoided from being raised during discharge and affecting the surrounding environment.

[0051] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A magnetic separation and screening device for ore production, comprising a separation bottom cylinder (1), a support base (2), a feed bucket (3), a fixed central axis (5), an adsorption magnetic plate (6) and a separation cylinder (7), wherein the lower parts of the left and right sides of the separation bottom cylinder (1) are fixedly connected to the support base (2), the upper left side of the separation bottom cylinder (1) is connected to the feed bucket (3), the middle of the separation bottom cylinder (1) is fixedly connected to the fixed central axis (5), and the middle part of the fixed central axis (5) is fixedly connected to an adsorption magnetic plate (6) for adsorbing iron ore, characterized in that: The invention also includes a driving mechanism (9) and a material distribution mechanism (10). A separation cylinder (7) is rotatably provided on a fixed central axis (5). An adsorption magnetic plate (6) is located in the separation cylinder (7). A driving mechanism (9) for providing power to drive the separation cylinder (7) to rotate is provided on the separation bottom cylinder (1). A material distribution mechanism (10) for intermittently discharging ore is provided between the feed hopper (3) and the separation cylinder (7). The driving mechanism (9) comprises a servo motor (91), a reversing short shaft (92), a driving gear (93) and a driven ring gear (94); the servo motor (91) is fixedly connected to the front side of the outer top wall of the separation bottom cylinder (1); the reversing short shaft (92) is rotatably provided on the upper middle part of the front side of the separation bottom cylinder (1); the output shaft of the servo motor (91) and the reversing short shaft (92) are driven by a synchronous belt assembly; the middle part of the reversing short shaft (92) is fixedly connected to the driving gear (93); the front part of the separation cylinder (7) is fixedly connected to the driven ring gear (94); the driven ring gear (94) is meshed with the driving gear (93); The material distribution mechanism (10) includes an acceleration belt assembly (101), a transmission short shaft (102) and an open hole distribution column (103). The transmission short shaft (102) is rotatably provided on both the front and rear sides of the lower part of the feeding bucket (3). The acceleration belt assembly (101) is connected between the transmission short shaft (102) and the separation cylinder (7). The acceleration belt assembly (101) consists of two pulleys and a belt. One pulley is installed on the rear side transmission short shaft (102), and the other pulley is installed on the rear part of the separation cylinder (7). The belt is wound between the two pulleys. The middle part of the transmission short shaft (102) is fixed with an open hole distribution column (103) for driving the ore to be intermittently discharged. The open hole distribution column (103) is located in the feeding bucket (3). The invention also includes a spreading mechanism (11) for evenly spreading ore. The spreading mechanism (11) includes a positioning gear (111), a first driven gear (112), a slotted short shaft (113), a positioning cylinder (114), a first hinged connecting rod (115), a positioning cross frame (116) and a guide inclined plate (117). The front part of the front transmission short shaft (102) is fixedly connected with the positioning gear (111). The front side of the lower part of the feeding bucket (3) is rotatably provided with a slotted short shaft (113). The slotted short shaft (113) A first driven gear (112) is fixedly connected to the rear portion, the first driven gear (112) is meshed with a positioning gear (111), a positioning cylinder (114) is slidably provided on the slotted short shaft (113), seven guide inclined plates (117) for evenly spreading ore are rotatably provided at intervals on the lower portion of the feed hopper (3), a positioning cross frame (116) is rotatably provided between the left portions of the guide inclined plates (117), and a first hinged connecting rod (115) is rotatably provided between the positioning cross frame (116) and the positioning cylinder (114); The invention also includes a throwing mechanism (12) for throwing up the ore, the throwing mechanism (12) including a second driven gear (121), a positioning cam (122), a second hinged connecting rod (123), a positioning seat (124), a throwing inclined plate (125), a hinged connecting plate (126) and a torsion spring (127), a positioning cam (122) is rotatably provided on the middle and lower side of the front of the separation bottom cylinder (1), a second driven gear (121) is fixedly connected to the middle of the positioning cam (122), and the second driven gear (121) and the second driven gear (121) are connected to the second driven gear (121). The movable gear ring (94) is engaged, and a throwing inclined plate (125) for throwing up ore is rotatably provided on the lower left side of the separation bottom cylinder (1). A positioning seat (124) is fixedly connected to the front of the throwing inclined plate (125). A second hinge connecting rod (123) is rotatably provided between the positioning seat (124) and the eccentric position of the positioning cam (122). A hinge connecting plate (126) is rotatably provided at the lower part of the throwing inclined plate (125). A torsion spring (127) is symmetrically connected between the throwing inclined plate (125) and the hinge connecting plate (126) in a front-to-back manner.

2. A magnetic separation and screening device for ore production according to claim 1, characterized in that: It also includes a guide plate (4) and a positioning rod (8). The guide plate (4) is fixedly connected to the upper left side of the feed bucket (3). Four positioning rods (8) are fixedly connected between the feed bucket (3) and the separation bottom cylinder (1) at even intervals.

3. A magnetic separation and screening device for ore production according to claim 2, characterized in that: The invention also includes a cleaning mechanism (13) for cleaning the separation cylinder (7). The cleaning mechanism (13) includes a fixed base plate (131), a cleaning brush (132) and a return spring (133). The lower part of the separation cylinder (1) is fixedly connected to the fixed base plate (131). The cleaning brush (132) for cleaning the separation cylinder (7) is slidably provided on the fixed base plate (131). The cleaning brush (132) is in contact with the separation cylinder (7). Four return springs (133) are evenly spaced and connected between the cleaning brush (132) and the fixed base plate (131).

4. A magnetic separation and screening device for ore production according to claim 3, characterized in that: The invention also includes a dustproof mechanism (14) for preventing dust from being raised. The dustproof mechanism (14) includes a fixed frame (141) and a dustproof cover (142). The lower part of the separation bottom cylinder (1) is fixedly connected to the fixed frame (141). The left and right sides of the fixed frame (141) are connected to the dustproof cover (142) for preventing dust from being raised.

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