Ore crushing system with pre-distributing function

Abstract

The utility model discloses an ore crushing system with a pre-distributing function. Comprising a rack, a feeding machine and a crushing machine, the crushing machine is arranged on the lower portion of the rack, a screening machine is arranged at the discharging end of the feeding machine, a discharging port in the end of the screening machine is communicated with a feeding port of an upper shell of the crushing machine, and a discharging port of the screening machine is communicated with a lower shell of the crushing machine through a material distribution chute; the screening machine is of a fluctuating roller type structure and comprises a box body, a plurality of fluctuating rollers are rotationally installed in the box body, chain wheels are installed at one ends of the fluctuating rollers, the middle of a chain winds around a middle chain wheel in a crossed mode and then winds around side chain wheels towards the two sides in a crossed mode in sequence, and the two ends of the chain wind around the side chain wheels and then are horizontally connected to the upper portion of the middle chain wheel. And the other end of one fluctuation roller is driven by a driving mechanism. According to the utility model, stones containing more fine materials and clay are pre-screened, so that the productivity of a crushing system is improved; the roller gap of the fluctuation roller can be adjusted, and therefore the requirements for pre-screening of ores of different types and different specifications are met.

Description

Technical Field

[0001] The utility model relates to mining machinery, in particular to an ore crushing system with a pre-separation function. Background Art

[0002] The limestone raw materials from mine blasting contain 25%-30% of fine materials (particle size ≤ 50mm). These fine materials that already meet the feeding particle size requirements of the raw material vertical mill enter the hammer crusher together with the coarse materials (particle size ≥ 50mm) for crushing. These materials not only cause over-crushing in the crusher, but also shorten the service life of wear-resistant parts such as hammer heads and hammer discs, increasing the operating cost. Due to the large amount of clay components in the fine materials, it is easy to block the hammer crusher grate device, resulting in a reduction in the production of the crushing system. Especially in the rainy season, the blockage is more frequent, bringing a greater maintenance labor intensity to the maintenance personnel. Content of the Utility Model

[0003] The utility model aims to solve the above technical problems, and thus provides an ore crushing system with a pre-separation function, which pre-screens the fine materials and soil to improve the production capacity of the crushing system.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] An ore crushing system with a pre-separation function includes a frame, a feeder, and a crusher. The crusher is placed at the lower part of the frame.

[0006] A screening machine is provided at the discharge end of the feeder. The end discharge port of the screening machine is communicated with the feed port of the upper shell of the crusher, and the discharge port of the screening machine is communicated with the lower shell of the crusher through a distribution chute.

[0007] The screening machine is of a wave roller structure. The screening machine includes a box body, and a plurality of wave rollers are rotatably installed in the box body. One end of each wave roller is provided with a sprocket. The middle of the chain crosses around the middle sprocket and then crosses around the side sprockets on both sides in turn. The two ends of the chain bypass the edge sprockets and are horizontally connected above the middle sprocket. The other end of one wave roller is driven by a driving mechanism.

[0008] Compared with the prior art, the beneficial effects of the utility model adopting the above technical solution are as follows:

[0009] 1) Pre-screen the stone materials containing more fine materials and clay, and improve the production capacity of the crushing system;

[0010] 2) Reduce the power consumption per ton, reduce the equipment failure rate, reduce the maintenance cost, and improve the service life of the equipment and parts;

[0011] 3) The transmission structure of the sprockets and chains of the screening machine is convenient for adjusting the roller gap of the wave rollers, so as to meet the requirements of pre-screening different types and specifications of ores.

[0012] Furthermore, an optimized solution of the present utility model is as follows:

[0013] Tensioning mechanisms are respectively provided between the middle sprocket and the side sprockets, and between the side sprockets and the edge sprockets. The tensioning mechanism includes a tensioning wheel, a wheel frame, a support and a spring. The tensioning wheel is in rolling connection with the chain. The tensioning wheel is rotatably installed at the upper end of the inclined wheel frame. The lower end of the wheel frame is hinged to the support, the support is fixedly connected to the box body, and a spring is installed between the upper end of the wheel frame and the lower part of the box body.

[0014] The number of the undulating rollers is odd.

[0015] The undulating roller is connected to the box body through a bearing seat, and the connection hole between the bearing seat and the box body is an elongated hole.

[0016] Impact plates are respectively provided at both ends of the lower part of the screening machine, and wear-resistant liners are installed on the impact surfaces of the impact plates.

[0017] A scraping plate is provided at the bottom of each undulating roller, and the scraping plate is fixedly connected to the box body.

[0018] A feed machine guard is provided at the upper part of the feed machine, a screening machine guard is provided at the upper part of the screening machine, and a crusher guard is provided at the upper part of the crusher. The feed machine guard, the screening machine guard and the crusher guard are connected in sequence.

[0019] Sealing doors are respectively provided on both sides of the screening machine guard.

[0020] The feed machine is a plate feed machine. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 It is a schematic diagram of the feed machine of an embodiment of the present utility model;

[0023] Figure 3 It is the front view of the screening machine of an embodiment of the present utility model;

[0024] Figure 4 It is a schematic diagram of the sealing door of an embodiment of the present utility model.

[0025] In the figure: frame 1; crusher 2; lower housing 2-1; middle housing 2-2; upper housing 2-3; feeder 3; screening machine 4; box body 4-1; fluctuating roller 4-2; middle fluctuating roller 4-2-1; side fluctuating roller 4-2-2; edge fluctuating roller 4-2-3; middle sprocket 5; side sprocket 6; edge sprocket 7; chain 8; tensioning wheel 9; wheel frame 10; support 11; spring 12; hook 13; material distribution chute 14; feeder guard 15; screening machine guard 16; door body 16-1; hinge assembly 16-2; bolt assembly 16-3; crusher guard 17. Specific implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] See Figure 1 、 Figure 2 , this embodiment provides an ore crushing system with a pre-material distribution function, which is mainly composed of a frame 1, a crusher 2, a feeder 3 and a screening machine 4. The crusher 2 is placed at the lower part of the frame 1. The crusher 2 is a hammer crusher, which is mainly composed of a housing, a rotor and a crushing assembly. The housing of the crusher 2 is composed of a lower housing 2-1, a middle housing 2-2 and an upper housing 2-3. The rotor and the crushing assembly of the crusher 2 are located in the middle housing 2-2. An inlet is opened at the top of the upper housing 2-3. The feeder 3 is a plate feeder, which is inclined and located on the left side of the frame 1. The crusher 2 and the feeder 3 are prior arts.

[0029] A screening machine 4 is arranged at the discharge end of the feeder 3 ( Figure 3As shown in the figure, the screening machine 4 is of a fluctuating roller type structure, which is horizontally installed above the frame 1 and lower than the discharge end of the feeder 3. The screening machine 4 mainly consists of a box body 4-1, fluctuating rollers 4-2 and a driving mechanism. The fluctuating rollers 4-2 are installed in the box body 4-1 through bearing seats, and the connection holes between the bearing seats and the box body 4-1 are long holes. In this embodiment, the number of fluctuating rollers 4-2 is 5, which are respectively an intermediate fluctuating roller 4-2-1, two side fluctuating rollers 4-2-2 and two edge fluctuating rollers 4-2-3 from inside to outside. The number of fluctuating rollers 4-2 is determined according to the production volume, and the number of fluctuating rollers is odd.

[0030] A driving mechanism is installed at the driving end of the intermediate fluctuating roller 4-2-1. The driving mechanism is a reduction motor (not shown in the figure), and the output shaft of the reduction motor is connected to the roller shaft of the intermediate fluctuating roller 4-2-1 through a coupling. An intermediate sprocket 5 is installed on the roller shaft of the intermediate fluctuating roller 4-2-1 far from the reduction motor, and side sprockets 6 and edge sprockets 7 are respectively installed on the roller shafts of the side fluctuating roller 4-2-2 and the edge fluctuating roller 4-2-3 on the same side as the intermediate sprocket 5. The middle part of the chain 8 crosses around the intermediate sprocket 5 and then crosses around the side sprockets 6 on both sides in turn. The two ends of the chain 8 bypass the edge sprockets 7 from the outside and are horizontally connected above the intermediate sprocket 5 to form a closed transmission chain.

[0031] Tensioning mechanisms are respectively arranged between the intermediate sprocket 5 and the side sprocket 6, and between the side sprocket 6 and the edge sprocket 7. The tensioning mechanisms are located below the fluctuating roller 4-2. The tensioning mechanism mainly consists of a tensioning wheel 9, a wheel frame 10, a support 11, a spring 12 and a hook 13. The tensioning wheel 9 is in rolling connection with the chain 8. The tensioning wheel 9 is rotatably installed at the upper end of the wheel frame 10 through a wheel shaft. The wheel frame 10 is inclined. In the initial state, the included angle between the wheel frame 10 and the vertical plate of the box body 4-1 is 50 degrees. The lower end of the wheel frame 10 is hinged to the support 11 through a pin shaft. The support 11 is installed on the box body 4-1. The bottom of the upper end of the wheel frame 10 is hooked and connected to the upper end of the spring 12. The lower end of the spring 12 is connected to the hook 13, and the hook 13 is welded to the bottom plate of the box body 4-1. The tensioning wheel 9, the intermediate sprocket 5 and the side sprocket 6 are arranged in a triangle, and the tensioning wheel 9, the side sprocket 6 and the edge sprocket 7 are arranged in a triangle. The transmission structure of the intermediate sprocket 5, the side sprocket 6, the edge sprocket 7 and the chain 8, and the connection structure between the bearing seat of the fluctuating roller 4-2 and the box body 4-1 enable the roller gap between the fluctuating rollers 4-2 to be adjusted, so as to meet the requirements of screening ores of different types and specifications, and increase the applicable range of the ore crushing system.

[0032] The discharge opening of the screening machine 4 is connected to the lower housing 2-1 of the crusher 2 through the material distribution chute 14. The lower end port of the material distribution chute 14 is flange-connected to the lower housing 2-1, and the end discharge opening of the screening machine 4 is connected to the feed opening of the upper housing 2-3. Impact plates are respectively provided at both ends of the lower part of the box body 4-1 of the screening machine 4, and wear-resistant liners are installed on the impact surfaces of the impact plates. A scraping plate is provided at the bottom of each undulating roller 4-2, and both ends of the scraping plate are fixedly connected to the box body 4-1. The scraping plate scrapes off the materials adhered to the undulating roller. The fine materials and soil pre-screened by the screening machine 4 bypass the crushing components of the crusher 2 and directly enter the lower housing 2-1, which improves the production capacity of the crushing system, reduces the power consumption per ton, reduces the equipment failure rate, reduces the maintenance cost, and increases the service life of the equipment and parts.

[0033] A feeder guard 15 is provided on the upper part of the feeder 3, a screening machine guard 16 is provided on the upper part of the screening machine 4, and a crusher guard 17 is provided on the upper part of the crusher 2. The feeder guard 15, the screening machine guard 16, and the crusher guard 17 are connected in sequence. Sealing doors are respectively provided on both sides of the screening machine guard 16 ( Figure 4 as shown). The sealing door is composed of a door body 16-1, a hinge assembly 16-2, a sealing strip, and a bolt assembly 16-3. One side of the door body 16-1 is hinged to the side plate of the screening machine guard 16 through the hinge assembly 16-2, and the other side of the door body 16-1 is connected to the side plate of the screening machine guard 16 through the bolt assembly 16-3. Sealing strips are installed on the four end faces of the door body 16-1. Sealing doors with the same structure as the screening machine guard 16 are provided on both sides of the material distribution chute 14.

[0034] During the production of the ore crushing system, the fine materials and clay in the ore are pre-screened by the screening machine before entering the crusher, which improves the hourly output of the crusher, reduces wear, prevents the crusher from being blocked by clay, and reduces the maintenance rate. The undulating roller type screening machine runs smoothly, without noise, without obvious vibration, is not afraid of dust, can effectively improve the production capacity of the crushing system, reduce the wear of the main components of the crushing system, and reduce the production cost.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An ore crushing system with a pre-classification function, comprising a frame, a feeder, and a crusher, wherein the crusher is placed at the bottom of the frame, and is characterized in that: The discharging end of the feeder is provided with a screening machine, the end discharging port of the screening machine is connected with the feeding port of the upper shell of the crusher, and the discharging port of the screening machine is connected with the lower shell of the crusher through the material distribution chute; The screening machine is of an undulating roller structure, comprising a box body, in which a plurality of undulating rollers are rotatably installed, a sprocket is installed at one end of each undulating roller, the middle part of the chain crosses around the middle sprocket and then crosses around the side sprockets on both sides in turn, the two ends of the chain pass around the side sprockets and are horizontally connected above the middle sprocket, and the other end of a undulating roller is driven by a driving mechanism.

2. The ore crushing system with pre-sizing function according to claim 1 is characterized in that: A tensioning mechanism is respectively provided between the middle sprocket and the side sprocket, and between the side sprocket and the edge sprocket. The tensioning mechanism comprises a tensioning wheel, a wheel frame, a support and a spring. The tensioning wheel is rollingly connected to the chain, and the tensioning wheel is rotatably installed on the upper end of the inclined wheel frame. The lower end of the wheel frame is hinged to the support, and the support is fixedly connected to the box body. A spring is installed between the upper end of the wheel frame and the lower part of the box body.

3. The ore crushing system with pre-sizing function according to claim 1 is characterized in that: The number of the undulating rollers is an odd number.

4. The ore crushing system with pre-sizing function according to claim 1 is characterized in that: The wave roller is connected to the box body through a bearing seat, and the connecting hole between the bearing seat and the box body is a long hole.

5. The ore crushing system with pre-sizing function according to claim 1 is characterized in that: Impact plates are respectively arranged at both ends of the lower part of the screening machine, and wear-resistant lining plates are installed on the impact surfaces of the impact plates.

6. The ore crushing system with pre-sizing function according to claim 1 is characterized in that: The bottom of each undulating roller is provided with a scraper plate, and the scraper plate is fixedly connected to the box body.

7. The ore crushing system with pre-classification function according to claim 1 is characterized in that: A feeder guard is provided on the upper part of the feeder, a screener guard is provided on the upper part of the screener, and a crusher guard is provided on the upper part of the crusher. The feeder guard, the screener guard and the crusher guard are connected in sequence.

8. The ore crushing system with pre-sizing function according to claim 7 is characterized in that: Sealed doors are respectively provided on both sides of the screening machine shield.

9. The ore crushing system with pre-sizing function according to claim 1 is characterized in that: The feeder is a plate feeder.

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