An ore screening apparatus

Abstract

The present application provides a kind of ore screening equipment, including material introduction groove, screening device and uniform spreading device, one end of the material introduction groove is used as feed inlet, the other end of the material introduction groove is used as discharge outlet, the screening device includes screen plate, one side of screen plate is flush with the discharge outlet, the other side of screen plate extends outward, the surface of screen plate is fixedly connected with several guide plates, the material introduction groove is also provided with uniform spreading device, and the uniform spreading device is set close to the discharge outlet. When the raw ore is put into the material introduction groove, part of the ore is forced to move along the transverse direction of the screening equipment by the uniform spreading device, so that the ore on the surface of the screen plate is evenly distributed, the concentration of the ore on the surface of the screen plate is avoided, the screening effect is improved, and the screening efficiency of each part of the screen plate surface can be fully utilized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mining engineering equipment, and in particular to an ore screening device. BACKGROUND

[0002] In mining engineering, it is often necessary to screen the collected ore, and to preliminarily classify the ore according to the size of the ore particle diameter, so as to select different transport vehicles for transporting the ore according to the size of the different particle diameters or to select appropriate processing methods for processing according to the size of the different particle diameters. Therefore, the screening and classification of the ore is a basic process in the ore processing technology.

[0003] In the prior art, a patent document with publication number "CN217963487U" discloses a gold and silver ore vibrating screening device, which comprises a screening frame, the screening frame is inclined from front to back, a screen is arranged inside the screening frame, a plurality of rotating shafts are arranged between the screening frames, the rotating shafts are located above the screen, chain wheels are fixedly arranged at the right ends of the rotating shafts and extend out of the screening frame, transmission chains are arranged between the chain wheels, a material brushing comb is arranged on the rotating shaft, and the bottom of the material brushing comb is attached to the screen when the material brushing comb is rotated to be perpendicular to the screen. The patent technical solution sets the screening frame, sets the screen inside the screening frame, sets the rotating shaft above the screen, and sets the material brushing comb on the rotating shaft. When the rotating shaft rotates under the drive of the driving motor, the material brushing comb is driven to rotate from bottom to top, the gold and silver ore that rolls and slides from front to back can be combed from front to back, the gold and silver ore that is stacked together can be combed and spread, and the gold and silver ore screening is more uniform. In the above-mentioned patent technology, since the feeding direction of the gold and silver ore flow is basically consistent with the tangential direction of the rotation of the material brushing comb, the gold and silver ore stacked on the material brushing comb is still difficult to spread in the transverse direction of the screening device within a short time of the rotation of the material brushing comb, which makes it difficult to improve the uniformity of the ore screening. In addition, in the initial screening of the ore, the ore is generally transferred and put onto the surface of the screen by a mining equipment such as an excavator, the excavator bucket diameter is smaller than the surface of the screen, which causes the concentration of the ore initially put on the surface of the screen to be high. The common screening device is generally also provided with a material guiding groove, the material guiding groove inlet diameter is generally consistent with the excavator bucket diameter, and the material guiding groove inlet diameter is generally smaller than the material guiding groove outlet diameter, which causes the concentration of the ore entering the surface of the screen through the material guiding groove to be still high, the distribution of the ore on the surface of the screen is extremely uneven, which affects the screening effect, and the vibrating screening efficiency of the screen is not fully utilized. SUMMARY

[0004] To solve the above technical problems, the present application provides an ore screening device.

[0005] The present application is realized by the following technical solutions.

[0006] The present application provides a kind of ore screening equipment, including material introduction groove, screening device and uniform spreading device, one end of the material introduction groove is used as feed inlet, the other end of the material introduction groove is used as discharge outlet, the screening device includes screen deck, one side of screen deck is flush with the discharge outlet, the other side of screen deck extends outward, the surface of screen deck is fixedly connected with several guide plates, the uniform spreading device is also provided in the material introduction groove, and the uniform spreading device is set close to the discharge outlet.

[0007] The uniform spreading device includes conveyor belt and several rotating shafts, the rotating shafts are installed in the material introduction groove through rolling bearings, each rotating shaft is also connected with roller through spline, and the conveyor belt is wound on the outer circumferential surface of the roller and connects all the rollers together.

[0008] The uniform spreading device also includes a base plate, a guide plate and a screw rod, the base plate is fixedly connected with the material introduction groove, the rotating shafts are also installed on the base plate using rolling bearings, and the guide plate fixedly connects the outer end faces of all the rollers together, one end of the screw rod is installed on the base plate using rolling bearings, and the other end of the screw rod is screwed with the guide plate.

[0009] The uniform spreading device includes a first motor, the first motor is installed on the material introduction groove, the output shaft of the first motor is fixedly connected with a driving wheel, at least one rotating shaft is also fixedly connected with a first driven wheel, the screw rod is also fixedly connected with a second driven wheel, and the driving wheel and the first driven wheel and the first driven wheel and the second driven wheel are engaged together through chain, synchronous belt or belt respectively.

[0010] The uniform spreading device also includes several guide rods, one end of the guide rods is fixedly connected with the material introduction groove, and the other end of the guide rods extends upward along the vertical direction.

[0011] The screening device includes a material collecting frame and a second motor, the second motor is installed on the material collecting frame, the screen deck is stacked on the surface of the material collecting frame through linear slide rail, and the output shaft of the second motor is engaged and connected with the screen deck using crank connecting rod mechanism.

[0012] The inclination angle between the screen deck and the horizontal plane is greater than 10°.

[0013] The screening device also includes a base, and the material collecting frame is fixedly connected with the base.

[0014] The bottom surface of the base also has several supporting legs.

[0015] The caliber of the discharge outlet is larger than the caliber of the feed inlet.

[0016] The beneficial effects of the present invention are as follows: When the raw ore is put into the feeding trough, the equipping device forces some of the ore to move laterally along the screening equipment, thereby making the ore entering the screen plate surface evenly distributed, avoiding the ore from concentrating on the screen plate surface, improving the screening effect, and allowing all parts of the screen plate surface to fully exert their screening efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the screening device of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the spreading device of the present invention;

[0020] Figure 4 This is the present invention. Figure 3 A magnified view of a section at point I.

[0021] In the diagram: 1-feeding trough, 2-screening device, 3-spreading device, 4-screen plate, 5-guide plate, 6-conveyor belt, 7-rotating shaft, 8-roller, 9-platform, 10-guide plate, 11-screw, 12-first motor, 13-drive wheel, 14-first driven wheel, 15-second driven wheel, 16-guide rod, 17-collecting frame, 18-second motor, 19-partition plate, 20-base, 21-support leg. Detailed Implementation

[0022] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0023] like Figures 1 to 4 As shown, the present invention provides an ore screening device, including a feeding trough 1, a screening device 2, and a spreading device 3. One end of the feeding trough 1 serves as the feed inlet, and the other end serves as the discharge outlet. The screening device 2 includes a screen plate 4, one side of which is flush with the discharge outlet, and the other side of which extends outward. Several guide plates 5 are fixedly connected to the surface of the screen plate 4. The feeding trough 1 is also provided with a spreading device 3, which is positioned close to the discharge outlet.

[0024] By adopting the technical solution of the present invention, after the raw ore is put into the feeding trough, the equipping device forces some of the ore to move laterally along the screening equipment, thereby making the ore entering the screen plate surface evenly distributed, avoiding the ore from concentrating on the screen plate surface, improving the screening effect, and allowing all parts of the screen plate surface to fully exert its screening efficiency.

[0025] Specifically, the uniform spreading device 3 comprises a conveying belt 6 and a plurality of rotating shafts 7, the rotating shafts 7 are installed in the material guiding groove 1 through rolling bearings, each rotating shaft 7 is further connected with a roller 8 through a spline, the conveying belt 6 is wound on the outer circumferential surface of the roller 8 and connects all the rollers 8 together. When the roller 8 rotates, the surface of the conveying belt 6 generates a friction force with the ore, so that the part of the ore concentrated in the material guiding groove moves along the conveying belt to the transverse direction of the screening device, thereby reducing the concentration of the ore in the material guiding groove, making the ore as evenly distributed as possible, avoiding the concentration of the ore on the surface of the screen plate, improving the screening effect, and also making the screening efficiency of the screen plate surface fully utilized.

[0026] In addition, the uniform spreading device 3 further comprises a base plate 9, a guide plate 10 and a screw rod 11, the base plate 9 is fixedly connected with the material guiding groove 1, the rotating shafts 7 are further installed on the base plate 9 through rolling bearings, and the guide plate 10 fixedly connects the outer end faces of all the rollers 8 together, one end of the screw rod 11 is installed on the base plate 9 through a rolling bearing, and the other end of the screw rod 11 is screwed with the guide plate 10. The uniform spreading device 3 comprises a first motor 12, the first motor 12 is installed on the material guiding groove 1, an output shaft of the first motor 12 is fixedly connected with a driving wheel 13, at least one rotating shaft 7 is further fixedly connected with a first driven wheel 14, the screw rod 11 is further fixedly connected with a second driven wheel 15, and the driving wheel 13 and the first driven wheel 14 and the first driven wheel 14 and the second driven wheel 15 are meshed together through a chain, a synchronous belt or a belt respectively. According to the technical scheme of the present application, the power output by the first motor 12 is transmitted to the rotating shaft 7 through the driving wheel 13 and the first driven wheel 14 in sequence, so as to reduce the concentration of the ore in the material guiding groove, and at the same time, the power output by the first motor 12 is further transmitted to the screw rod 11 through the driving wheel 13 and the second driven wheel 12 in sequence, so that the conveying belt 6 can not only rotate in the transverse direction of the screening device, but also move up and down in the vertical direction, thereby making the ore further evenly spread in the material guiding groove, and when the conveying belt 6 moves up and down in the vertical direction, part of the ore can fall onto the surface of the screen plate through the gap between the conveying belt 6 and the bottom surface of the material guiding groove, which can not only avoid the blocking of the conveying belt 6 caused by the long-time pressure of the ore, but also timely distribute the evenly spread ore into each material guiding channel for vibration screening.

[0027] Specifically, the uniform spreading device 3 further comprises a plurality of guide rods 16, one end of each guide rod 16 is fixedly connected with the material guiding groove 1, and the other end of each guide rod 16 extends upward along the vertical direction.

[0028] In addition, the screening device 2 comprises a collecting frame 17 and a second motor 18, the second motor 18 is installed on the collecting frame 17, the screen plate 4 is stacked on the surface of the collecting frame 17 through a linear sliding rail, and the output shaft of the second motor 18 is connected with the screen plate 4 through a crank linkage mechanism. A plurality of partitions 19 are arranged in the collecting frame 17, the partitions 19 divide the internal space of the collecting frame 17 into a plurality of collecting flow channels, and the guide plate 5 divides the surface of the screen plate 4 into a plurality of material guiding flow channels, the collecting flow channels and the material guiding flow channels correspond to each other and have the same caliber, so that the small-diameter ore screened by the screen plate is sent out through the collecting flow channels, and the large-diameter ore is sent out through the material guiding flow channels.

[0029] Specifically, the inclination angle between the screen plate 4 and the horizontal plane is greater than 10°. The screening device 2 further comprises a base 20, and the collecting frame 17 and the base 20 are fixedly connected together. The bottom surface of the base 20 is further provided with a plurality of supporting legs 21. The caliber of the discharge port is greater than the caliber of the feeding port.

Claims

1. An ore screening apparatus characterised in that: The utility model provides a kind of material guiding groove (1), screening device (2) and uniform spreading device (3), one end of the material guiding groove (1) is used as feed inlet, the other end of the material guiding groove (1) is used as discharge port, the screening device (2) includes screen deck (4), one side of screen deck (4) is flush with the discharge port, the other side of screen deck (4) extends outward, the surface of screen deck (4) is fixed with several guide plates (5), uniform spreading device (3) is also provided in the material guiding groove (1), uniform spreading device (3) is set position and the discharge port is close, the caliber of the discharge port is greater than the caliber of the feed inlet, the uniform spreading device (3) includes conveying belt (6) and several rotating shafts (7), rotating shaft (7) is installed in the material guiding groove (1) by rolling bearing, each rotating shaft (7) is also connected with roller (8) by spline, conveying belt (6) is wound on the outer peripheral surface of roller (8) and connects all roller (8) together;The uniform spreading device (3) further includes a table (9), a guide plate (10) and a screw (11), the table (9) is fixed with the material guiding groove (1), the rotating shaft (7) is also installed on the table (9) using rolling bearing, and the guide plate (10) is fixed together with the outer end surface of all roller (8), one end of the screw (11) is installed on the table (9) using rolling bearing, and the other end of the screw (11) is screwed with the guide plate (10);The uniform spreading device (3) includes a first motor (12), the first motor (12) is installed on the material guiding groove (1), the output shaft of the first motor (12) is fixed with a driving wheel (13), at least one rotating shaft (7) is also fixed with a first driven wheel (14), the screw (11) is also fixed with a second driven wheel (15), the driving wheel (13) and the first driven wheel (14) and the first driven wheel (14) and the second driven wheel (15) are engaged together by chain, synchronous belt or belt respectively;The uniform spreading device (3) further includes several guide rods (16), one end of the guide rod (16) is fixed with the material guiding groove (1), and the other end of the guide rod (16) extends upward along the vertical direction.

2. An ore screening apparatus as claimed in claim 1, characterised in that: The screening device (2) includes a material collecting frame (17) and a second motor (18), the second motor (18) is installed on the material collecting frame (17), the screen deck (4) is stacked on the surface of the material collecting frame (17) by linear slide rail, and the output shaft of the second motor (18) is connected with the screen deck (4) by using crank connecting rod mechanism.

3. An ore screening apparatus as claimed in claim 2, characterised in that: The inclination angle between the screen deck (4) and the horizontal plane is greater than 10°.

4. An ore screening apparatus as claimed in claim 2, characterised in that: The screening device (2) further includes a base (20), and the material collecting frame (17) is fixed with the base (20).

5. An ore screening apparatus as claimed in claim 4, characterised in that: The bottom surface of the base (20) is further provided with several supporting legs (21).

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