Movable screening machine

Abstract

The invention relates to the technical field of ore screening, in particular to a movable screening machine to solve the problem that raw ore transportation cost is continuously increased due to the fact that a fixed production line is used along with mining. The invention provides a movable screening machine. The movable screening machine comprises a wave roller screen, a conveying device and a dust suppression device which are arranged on a movable base. The wave roller screen can screen raw ore conveyed by the plate type feeding machine, small ore blocks are output through a first discharging port of the wave roller screen, and large rock blocks are output through a second discharging port of the wave roller screen. The conveying device can receive small ore blocks and transfer and load the small ore blocks; and the dust suppression device can spray and remove dust in the processes of raw ore conveying, screening and small ore transferring. The mobile screening machine is directly transported to a mining site, so that the loss of ores in the transportation process can be obviously reduced, raw ores can be effectively screened, and low-quality raw ores are prevented from directly entering a crushing link, so that the damage rate and the energy consumption of equipment are reduced, and the stability of the quality of the ores is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of ore screening, in particular to a mobile screening machine. Background Art

[0002] Under the current production model, the ore production line is set to a fixed type, which means that raw ore from different areas must be transported to a specific location for processing.

[0003] However, with the continuous mining of the mine, high-quality ore bodies are gradually exhausted, and the remaining ore bodies are mostly interlayered, and the alkali content continues to increase.

[0004] This phenomenon causes low-alkali ore bodies to be often covered by other rock layers, which significantly reduces the overall quality of the original ore.

[0005] In this case, if the collected raw ore is not effectively screened and directly put into the crusher, it will inevitably bring a large amount of rock and waste ore. These impurities can easily cause equipment damage when passing through multiple stages of equipment on the production line, which not only increases the operating burden of the equipment, but also significantly increases power consumption and wear rate.

[0006] In addition, it usually takes about a year to install a fixed production line at a mine collection site, which not only increases the initial investment cost, but also leads to a long production cycle and low operating efficiency.

[0007] As the mine is further mined, the distance between the fixed production line and the mine gradually increases, resulting in rising transportation costs for the raw ore. Summary of the invention

[0008] The present invention provides a mobile screening machine to alleviate the problem that the cost of transporting raw ore will continue to increase due to the use of a fixed production line as mining progresses.

[0009] In order to alleviate the above technical problems, the technical solution provided by the present invention is: The present invention provides a mobile screening machine including a corrugated roller screen, a conveying device and a dust suppression device arranged on a mobile base; The roller screen can screen the raw ore delivered by the plate feeder, and output small pieces of ore through the first discharge port of the roller screen and large pieces of rock through the second discharge port; The conveyor can receive small pieces of ore and transfer them to the truck; The dust suppression device can spray and remove dust during the process of raw ore transportation, screening and small ore transfer.

[0010] Furthermore, The conveying device includes a first conveyor belt and a second conveyor belt; The small pieces of ore are transferred to the first transport vehicle after passing through the first conveyor belt and the second conveyor belt in sequence.

[0011] Furthermore, The plate feeder is arranged just above the first conveyor belt and the second conveyor belt.

[0012] Furthermore, The feeding port of the plate feeder is arranged at one end away from the corrugated roller screen; The plate feeder is located at one end of the feeding port which is lower than the end connected to the corrugated roller screen.

[0013] Furthermore, The first conveyor belt is arranged at the lower part of the corrugated roller screen; One end of the second conveyor belt connected to the first conveyor belt is arranged at the lower part of the first conveyor belt.

[0014] Furthermore, The second conveyor belt gradually tilts upward from the end connected to the first conveyor belt; The discharge end of the second conveyor belt is higher than the height of the first transport vehicle.

[0015] Furthermore, The second discharge port faces the second transport vehicle.

[0016] Furthermore, The dust suppression device includes a first spray pipe, a second spray pipe and a third spray pipe; The first spray pipe is arranged on both sides of the conveying direction of the plate feeder; The second spray pipe is arranged at the connection between the first conveyor belt and the second conveyor belt; The third spray pipe is arranged at the material dropping position of the second material discharge port and extends toward the direction of the second transport vehicle.

[0017] Furthermore, The nozzle of the first spray pipe is facing the raw ore; The nozzle of the second spray pipe is directly facing the small pieces of ore; The nozzle of the third sprinkler pipe is large rocks.

[0018] Furthermore, Protective plates are arranged on both sides of the connection between the first conveyor belt and the second conveyor belt.

[0019] The beneficial effects of the mobile screening machine in the present invention are analyzed as follows: The mobile screening machine includes a roller screen, a conveying device and a dust suppression device arranged on a mobile base; the roller screen can screen the raw ore delivered by the plate feeder, and output small pieces of ore through the first discharge port of the roller screen and large pieces of rock through the second discharge port; the conveying device can receive small pieces of ore and transfer them for loading; the dust suppression device can spray and remove dust during the process of raw ore conveying, screening and small piece ore transfer.

[0020] By transporting the mobile screening machine directly to the mining site, not only can the loss of ore during transportation be significantly reduced, but the raw ore can also be effectively screened, separating the usable ore from the waste ore, and preventing low-quality raw ore from directly entering the crushing stage, thereby reducing equipment damage rate and energy consumption.

[0021] It ensures the stability of ore quality and maximizes resource utilization.

[0022] In addition, the flexibility of mobile screens enables them to be adjusted according to the mining progress and geographical changes of the mine, avoiding the increased transportation costs and reduced efficiency caused by the location of fixed equipment far from the mine source.

[0023] At the same time, the dust suppression device not only improves the working environment, but also complies with modern environmental protection standards, providing a more sustainable development plan for mining operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the main structure of a mobile screening machine provided in an embodiment of the present invention; Figure 2 A cross-sectional schematic diagram of the installation position of the second spray pipe provided in an embodiment of the present invention; Figure 3 An enlarged schematic diagram of the installation position of the first spray pipe provided in an embodiment of the present invention.

[0026] icon: 100-mobile base; 200-corrugated roller screen; 210-first discharge port; 220-second discharge port; 300- conveying device; 310- first conveyor belt; 320- second conveyor belt; 330- protective plate; 410-first spray pipe; 420-second spray pipe; 430-third spray pipe; 500-plate feeder; 510-feeding port; 600-First transport vehicle; 700 - Second transport vehicle. DETAILED DESCRIPTION

[0027] Under the existing production method, the ore production line is fixed, and the raw ores mined in different areas need to be transported to the designated location. However, with the continuous mining of the mine, the high-quality ore body is gradually consumed, and the remaining ore body is prone to a large number of interlayers and the alkali content is getting higher and higher. The low-alkali ore body is also easily covered by other rock layers, causing the quality of the raw ore to become worse and worse. At this time, if the collected raw ore is not screened and the mined raw ore is directly put into the crusher, a large amount of waste ore such as rocks will follow the production line and flow through multi-stage equipment, which is easy to damage the operation of the equipment and seriously increase the power consumption and grinding of the equipment. If a fixed production line is installed at the mine collection site, it often takes about 1 year, and there are problems such as high initial investment cost, long production cycle, and low operating efficiency. In addition, as the mine is further mined, the fixed production line will be farther and farther away from the mine, and the transportation cost of the raw ore will gradually increase.

[0028] In view of this, if Figures 1 to 3 As shown, the present solution provides a mobile screening machine to alleviate the above problems.

[0029] The device includes a corrugated roller screen 200, a conveying device 300 and a dust suppression device arranged on a movable base 100; The corrugated roller screen 200 can screen the raw ore delivered by the plate feeder 500, and output small pieces of ore through the first discharge port 210 of the corrugated roller screen 200, and output large pieces of rock through the second discharge port 220; The conveying device 300 can receive small pieces of ore and transfer them to the truck; The dust suppression device can spray and remove dust during the process of raw ore transportation, screening and small ore transfer.

[0030] In this solution, the mobile screening machine can be transported to the source of the mine by vehicle and installed on site. The collected mine ore is first transported by the plate feeder 500, and then transported to the roller screen 200 by the plate feeder 500. The mine ore is mainly composed of small rocks and large ores. The roller screen 200 screens the two and outputs the screened large rocks and small ores to different transport vehicles respectively.

[0031] Compared with the prior art, the device is easy to transport and install in the mining area, and can preliminarily screen the raw ore collected from the mine, so that the ore and rock can be preliminarily screened from the mining source. The ore and rock are transported by different vehicles and processed separately, which greatly reduces the amount of waste rock transported to the ore processing plant, improves the processing efficiency of the ore processing plant, and saves transportation costs (in the prior art, the raw ore will be directly transported to the ore processing plant or wait for the fixed production line to be installed and then handed over to the fixed production line for processing); Figure 1 The mobile base 100 shown can be designed in the form of a crawler to increase the contact area with the ground and make the upper equipment run more smoothly.

[0032] In this solution, the conveying device 300 includes a first conveyor belt 310 and a second conveyor belt 320; The small pieces of ore are transferred to the first transport vehicle 600 after passing through the first conveyor belt 310 and the second conveyor belt 320 in sequence; The plate feeder 500 is arranged directly above the first conveyor belt 310 and the second conveyor belt 320: The feeding port 510 of the plate feeder 500 is arranged at one end away from the corrugated roller screen 200; The plate feeder 500 is located at one end of the feeding port 510 which is lower than the end connected to the corrugated roller screen 200; The first conveyor belt 310 is disposed at the lower part of the corrugated roller screen 200; One end of the second conveyor belt 320 connected to the first conveyor belt 310 is disposed at the lower portion of the first conveyor belt 310 .

[0033] Specifically, the conveying device 300, the corrugated roller screen 200 and the plate feeder 500 are arranged in a zigzag shape in the vertical direction. The plate feeder 500 is arranged at the top. The feeding port 510 is used to receive the raw ore excavated by the mining equipment. Therefore, in order to facilitate the mining equipment to put the raw ore into the feeding port 510, the plate feeder 500 at this end of the feeding port 510 is tilted downward to lower the height to the ground; then the raw ore is gradually lifted upward from one end of the feeding port 510 and transported to the corrugated roller screen 200, and the corrugated roller screen 200 The raw ore is screened into large rocks and small pieces of ore. At this time, the large pieces of rock continue to move away from the plate feeder 500 under the action of the corrugated roller screen 200, and are output outward from the second discharge port 220. The installation height of the corrugated roller screen 200 can be set according to the height of the second transport vehicle 700 to facilitate the second transport vehicle 700 to receive large pieces of rock; at the same time, small pieces of ore are output downward through the first discharge port 210, and are transported to the first transport vehicle 600 with the cooperation of the first conveyor belt 310 and the second conveyor belt 320.

[0034] In this solution, due to the limitation of size and space, the receiving and transferring operations cannot be completed by one conveyor belt, so a first conveyor belt 310 and a second conveyor belt 320 are provided, and the second conveyor belt 320 gradually tilts upward from the end connected to the first conveyor belt 310; The discharge end of the second conveyor belt 320 is higher than the height of the first transport vehicle 600 .

[0035] In this solution, in order to avoid dust pollution during the process of raw ore transportation and screening, a dust suppression device is provided, which includes a first spray pipe 410, a second spray pipe 420 and a third spray pipe 430; The first spray pipes 410 are arranged on both sides of the plate feeder 500 along the conveying direction thereof; The second spray pipe 420 is disposed at the connection between the first conveyor belt 310 and the second conveyor belt 320; The third spray pipe 430 is disposed at the material dropping position of the second material discharge port 220 and extends toward the direction of the second transport vehicle 700 .

[0036] Specifically, the first spray pipe 410 and the third spray pipe 430 can be provided with spray pipes of corresponding lengths according to the size and working frequency of the plate feeder 500 and the corrugated roller screen 200 and the problem of frictional heating of the raw ore. Figure 2 In the embodiment, the first spray pipe 410 is arranged on the upper part of the baffles on both sides of the feeding port 510. Spray pipes can also be arranged on both sides from the beginning to the end along the conveying direction according to the length of the plate feeder 500, or multiple groups of spray pipes can be arranged in parallel up and down; the third spray pipe 430 is arranged around the second discharge port 220 and one end extends into the second transport vehicle 700 to avoid dust during loading. Since the size of the raw ore and large rocks is large, the first spray pipe 410 and the third spray pipe 430 should be evenly and densely arranged to ensure that the water is fully sprayed. The ore is partially covered to avoid dust, and the small pieces of ore output through the first discharge port 210 are sprayed and covered by the second spray pipe 420 horizontally arranged tangent to the conveying direction of the first conveyor belt 310; preferably, the first spray pipe 410, the second spray pipe 420 and the third spray pipe 430 can be made of flexible hoses, so that the density and position of the layout can be adjusted according to production needs. The three groups of spray pipes can be independently set and installed, and are respectively connected to pressure gauges to independently monitor the operating status of the pipeline, which is convenient for quickly locating faults and minimizing downtime for maintenance.

[0037] In this solution, in order to maximize the dust removal effect and save water, the nozzle of the first spray pipe 410 is directed at the original ore; the nozzle of the second spray pipe 420 is directed at small pieces of ore; the nozzle of the third spray pipe 430 is directed at large rocks, and an atomizing device is set on each nozzle to spray water in the form of atomization to increase the coverage area.

[0038] In addition, in order to ensure the safety of workers, protective nets should be installed on both sides of the plate feeder 500, on both sides of the corrugated roller screen 200, and on both sides of the first conveyor belt 310 and the second conveyor belt 320 to prevent stones from falling and injuring people; protective plates 330 are installed on both sides of the connection between the first conveyor belt 310 and the second conveyor belt 320 to prevent small pieces of ore from falling during transfer and requiring secondary collection.

[0039] This solution has at least the following beneficial effects: This solution effectively solves many problems in the traditional ore production process by introducing mobile screening machines, especially in the current context of gradual depletion of mining resources and declining ore quality.

[0040] Although traditional fixed production lines can process large amounts of ore, with resources becoming increasingly scarce, their establishment and operating costs are too high and require a long construction period, resulting in low production efficiency.

[0041] This solution can not only significantly reduce the loss of ore during transportation by transporting the mobile screening machine directly to the mining site, but also effectively screen the raw ore, separate the usable ore from the waste ore, and avoid low-quality raw ore directly entering the crushing stage, thereby reducing equipment damage rate and energy consumption.

[0042] The introduction of this screening technology ensures the stability of ore quality and maximizes resource utilization.

[0043] In addition, the flexibility of mobile screens enables them to be adjusted according to the mining progress and geographical changes of the mine, avoiding the increased transportation costs and reduced efficiency caused by the location of fixed equipment far from the mine source.

[0044] At the same time, the dust suppression device not only improves the working environment, but also complies with modern environmental protection standards, providing a more sustainable development plan for mining operations.

[0045] Through this innovative solution, the ore production process will be more efficient, economical and environmentally friendly, bringing greater economic benefits and social value to enterprises and promoting the sustainable development of the mining industry.

[0046] Overall, this plan not only improves the efficiency of resource utilization, but also provides strong technical support for the transformation and upgrading of the mining industry.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile screening machine, characterized in that: It comprises a corrugated roller screen (200), a conveying device (300) and a dust suppression device which are arranged on a movable base (100); The corrugated roller screen (200) is capable of screening the raw ore delivered by the plate feeder (500), and outputting small pieces of ore through a first discharge port (210) of the corrugated roller screen (200), and outputting large pieces of rock through a second discharge port (220); The conveying device (300) is capable of receiving the small pieces of ore and transferring them to a truck; The dust suppression device can spray and remove dust during the process of raw ore transportation, screening and small ore transfer; The conveying device (300) comprises a first conveying belt (310) and a second conveying belt (320); The small pieces of ore are transferred to the first transport vehicle (600) after passing through the first conveyor belt (310) and the second conveyor belt (320) in sequence; The plate feeder (500) is arranged directly above the first conveyor belt (310) and the second conveyor belt (320); The feeding port (510) of the plate feeder (500) is arranged at an end away from the corrugated roller screen (200); The plate feeder (500) is located at one end of the feeding port (510) which is lower than the end connected to the corrugated roller screen (200); The first conveyor belt (310) is arranged at the lower part of the corrugated roller screen (200); One end of the second conveyor belt (320) connected to the first conveyor belt (310) is arranged at the lower part of the first conveyor belt (310); The second conveyor belt (320) gradually tilts upward from the end connected to the first conveyor belt (310); The discharge end of the second conveyor belt (320) is higher than the height of the first transport vehicle (600).

2. The mobile screening machine according to claim 1, characterized in that: The second discharge port (220) faces the inside of the second transport vehicle (700).

3. The mobile screening machine according to claim 2, characterized in that: The dust suppression device comprises a first spray pipe (410), a second spray pipe (420) and a third spray pipe (430); The first spray pipe (410) is arranged on both sides of the plate feeder (500) in the conveying direction; The second spray pipe (420) is arranged at the connection between the first conveyor belt (310) and the second conveyor belt (320); The third spray pipe (430) is arranged at the material dropping position of the second material discharge port (220) and extends in the direction of the second transport vehicle (700).

4. The mobile screening machine according to claim 3, characterized in that: The spray head of the first spray pipe (410) is facing the raw ore; The spray head of the second spray pipe (420) is facing the small piece of ore; The nozzle of the third spray pipe (430) is directed toward the large rock.

5. The mobile screening machine according to claim 4, characterized in that: Protective plates (330) are provided on both sides of the connection between the first conveyor belt (310) and the second conveyor belt (320).

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