An ore coarse screening device

Abstract

The utility model discloses a kind of ore coarse screening device, it is related to ore screening equipment technical field, including screening frame, its bottom is provided with screen cloth;Hopper, cross support bar is fixedly connected with the top opening of material hopper, the edge of the top of hopper is fixed with a plurality of electromagnet, the bottom of hopper is fixed with base, the outside of base is fixedly installed with hydraulic cylinder two;Scraping mechanism, it is located above screening frame.The scraping mechanism in the utility model by adopting the scraper with the scraping of the gap of ∧ to push the large-size ore block on the upper layer of broken ore, and the bottom of scraper can be realized slightly swing during scraping process, so the mechanism one-time scraping area is large, and the removal efficiency of large-size ore block is high, while also screening small particle ore, in addition, scraping amount can be adjusted by the height of scraping mechanism, to realize the effect of quickly removing large-size ore block, improve ore coarse screening efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of ore screening equipment, and more specifically to an ore coarse screening device. Background Technology

[0002] Ore coarse screening is a crucial step in ore processing. Its main function is to perform preliminary size classification of large ore pieces, separating them from finer particles to improve the efficiency and economy of subsequent processing. Ore coarse screening typically removes larger ore blocks to prevent them from directly entering the mill and damaging the equipment or reducing processing efficiency.

[0003] Generally, coarse screening of ore typically employs screening equipment such as vibrating screens, fixed screens, and rotary screens. These screening devices have different working principles and applicable ranges, but their basic principle is to utilize the vibration or rotation of the screen mesh to force the ore through screen openings of different sizes, thereby achieving particle size classification. However, these devices currently have the following problems: First, they have complex structures and high procurement costs; second, since the existing equipment is a relatively fine coarse screen, the ore product is gradually discharged after screening, resulting in good screening accuracy, but the screening efficiency for larger ore blocks is relatively low. Utility Model Content

[0004] The purpose of this utility model is to provide an ore coarse screening device in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: an ore coarse screening device, comprising:

[0006] A screening frame with a screen at its bottom;

[0007] The hopper has a cross support bar fixedly connected to its top opening. Several electromagnets are fixed to the edge of the top of the hopper. A base is fixed to the bottom of the hopper, and a hydraulic cylinder is fixedly installed on the outside of the base.

[0008] The scraping mechanism is located above the screening frame.

[0009] To facilitate the scraper's slight swaying and movement over the edge of the screening frame, in a preferred embodiment of this utility model's coarse ore screening device, the scraping mechanism includes a scraper, a spring, and a push plate. The scraper and push plate are hinged together, and a right-angled spring is installed at the angle between the scraper and the push plate. Several hydraulic cylinders are fixedly installed at the end of the push plate away from the scraper.

[0010] To prevent the spring from affecting the scraper's swaying, in a preferred embodiment of the ore coarse screening device of this utility model, a groove is provided on the side of the scraper near the spring, and a slider that cooperates with the groove is fixedly connected to the outside of the spring.

[0011] To facilitate the installation of the scraper and push plate, in a preferred embodiment of the ore coarse screening device of this utility model, the two ends of the top of the scraper are fixed with mounting plates, and the opposite side of the two mounting plates is hinged to the push plate by a pivot pin.

[0012] In order to enable the scraper to hook onto the edge and push the screening frame to move after passing over the screening frame, as a preferred embodiment of the ore coarse screening device of this utility model, a rounded corner guard is fixedly provided on one side of the screening frame. The side of the rounded corner guard facing the inside of the screening frame is rounded and the rounded corner guard is higher than the other guards of the screening frame. A ∧-shaped notch is opened at the bottom of the scraper. The bottom surface of the pointed corner of the ∧-shaped notch away from the spring is higher than the bottom surface of the pointed corner on the other side.

[0013] For this purpose, as a preferred embodiment of the ore coarse screening device of this utility model, a discharge port is provided on one side of the hopper.

[0014] The beneficial effects of this utility model are as follows: The scraping mechanism uses a scraper with a ∧-shaped notch to flatly push large-sized ore blocks on the upper layer of crushed ore. During the scraping process, the bottom of the scraper can swing slightly. Therefore, the mechanism can scrape a large area at one time, which is highly efficient in removing large-sized ore blocks. It can also screen small ore particles. In addition, the scraping amount can be adjusted by the height of the scraping mechanism, thereby achieving the effect of quickly removing large-sized ore blocks and improving the efficiency of coarse screening of ore. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is the utility model Figure 1 Schematic diagram at point A;

[0017] Figure 3 This is a cross-sectional view of the screening frame and hopper after installation according to this utility model;

[0018] Figure 4 This is a top view of the screening frame and hopper of this utility model before installation;

[0019] Figure 5 This is a schematic diagram of the scraping structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the separate structure of the scraper and the spring sheet of this utility model.

[0021] Reference numerals in the attached drawings: 1. Conveyor; 101. Baffle; 2. Screening frame; 201. Screen mesh; 202. Rounded corner guard; 3. Hydraulic cylinder one; 301. Mounting frame; 4. Hopper; 401. Cross support bar; 402. Electromagnet; 403. Discharge port; 404. Base; 405. Hydraulic cylinder two; 5. Scraper; 501. ∧-shaped notch; 502. Slide groove; 503. Mounting plate; 6. Spring; 601. Slider; 7. Push plate; 701. Hydraulic cylinder three; 8. Support; 9. Combined belt conveyor; 901. Conveyor belt one; 902. Conveyor belt two. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Please see Figures 1-6 The present invention provides the following technical solution:

[0025] An ore coarse screening device includes:

[0026] Conveyor 1: Screening frame 2, which is used to convey ore to the right;

[0027] Screening frame 2: A screen 201 is provided at its bottom. The screening frame 2 stops moving when it is conveyed to the rear side of the hopper 4.

[0028] Hydraulic cylinder 3: It has a mounting bracket 301 installed at its bottom. Hydraulic cylinder 3 is used to move the screening frame 2 horizontally to the upper side of the hopper 4.

[0029] The hopper 4 has a cross support bar 401 fixedly connected to its top opening. Several electromagnets 402 are fixed to the top edge of the hopper 4. A discharge port 403 is provided on one side of the hopper 4. A base 404 is fixed to the bottom of the hopper 4. A hydraulic cylinder 405 is fixedly installed on the outside of the base 404. When the screening frame 2 is located on the upper side of the hopper 4, the top edge of the screening frame 2 is temporarily fixed to the bottom edge of the hopper 4 by the electromagnets 402. The hydraulic cylinder 405 drives the screening frame 2 to move and shake. During the shaking process, smaller ore particles in the frame fall into the hopper 4 through the screen 201.

[0030] The scraping mechanism is located above the screening frame 2. Large pieces of ore in the upper layer of the screening frame 2 are scraped off by the scraping mechanism.

[0031] Support bracket 8 is used to support hydraulic cylinder 405, hydraulic cylinder 701, and combined belt conveyor 9 to ensure the stable operation of the entire transport line and the entire device. Support bracket 8 has the function of adjusting the overall height of the scraping mechanism. By changing the height of the scraping mechanism, the amount of large pieces of ore scraped from the upper layer can be adjusted.

[0032] The combined belt conveyor 9 includes a first conveyor belt 901 and a second conveyor belt 902. The first conveyor belt 901 is located above the second conveyor belt 902. Large pieces of ore scraped off by the scraping mechanism are transported through the first conveyor belt 901, and small particles of ore in the hopper 4 are discharged to the first conveyor belt 901 and transported to the next screening location.

[0033] As a technical optimization of this utility model: the scraping mechanism includes a scraper 5, a spring 6, and a push plate 7. The scraper 5 and the push plate 7 are hinged together, and the right-angled spring 6 is installed at the angle between the scraper 5 and the push plate 7. Several hydraulic cylinders 701 are fixedly installed on the end of the push plate 7 away from the scraper 5. A groove 502 is opened on the side of the scraper 5 near the spring 6. A slider 601 that cooperates with the groove 502 is fixedly connected to the outside of the spring 6. The slider 601 is slidably connected to the groove 502, and the spring 6... The top of the scraper 5 is fixedly connected to the bottom of the push plate 7; the two ends of the top of the scraper 5 are fixed with mounting plates 503, and the opposite sides of the two mounting plates 503 are hinged to the push plate 7 by a shaft pin; a rounded corner guard 202 is fixedly provided on one side of the screening frame 2, the rounded corner guard 202 facing the inside of the screening frame 2 has a rounded chamfer, the rounded corner guard 202 is higher than the other guards of the screening frame 2, and a ∧-shaped notch 501 is opened at the bottom of the scraper 5, the bottom surface of the sharp corner of the ∧-shaped notch 501 away from the spring plate 6 is higher than the bottom surface of the other sharp corner.

[0034] In this embodiment: When the scraping mechanism is running, the hydraulic cylinder 701 is activated, driving the push plate 7 to move to the left. The push plate 7 pushes the scraper 5 to move horizontally to the left simultaneously. During the horizontal movement of the scraper 5, large pieces of ore in the upper layer of the screening frame 2 can be scraped off. The scraped large pieces of ore fall onto the left-side conveyor belt 901 and are transported by the conveyor belt 901 to the next processing location. The bottom of the scraper 5 is higher than the right, front, and rear side guards of the screening frame 2, so the scraper 5 can move smoothly from right to left. When the scraper 5 moves to the rounded corner guard 202, the scraper 5 swings to the right. At this time, the spring 6 bends and the included angle decreases. At the same time, the slider 601 slides in the groove 502. The left sharp corner of the ∧-shaped notch 501 is higher and can pass over the rounded corner guard 202 first, and then drive the other sharp corner to pass over the rounded corner guard 202, thereby moving the scraper 5 as a whole to the left side of the screening frame 2. At this time, the scraper 5 returns to its natural vertical state. By restarting hydraulic cylinder 3 701, scraper 5 can be moved to the right. At this time, the right tip of the ∧-shaped notch 501 of scraper 5 is too low to pass the rounded edge 202. Therefore, after turning off the electromagnet 402 switch, scraper 5 can pull the whole screening frame 2 to the right. Then, the robot, forklift or manual transport it together with the ore left in the frame after screening to the next processing point. After hydraulic cylinder 3 701 is reset, hydraulic cylinder 1 3 can push the next screening frame 2 onto the hopper 4 so that the above operation can be repeated for the next coarse screening of ore.

[0035] In the scraping structure, the size and weight requirements of the scraper 5 are different for different ore screening quantities. When pushing the ore block to the left, it mainly relies on the squeezing force generated by the self-weight of the scraper 5. Therefore, the setting of the right-angle spring 6 makes the scraper 5 always in a natural vertical hanging state under normal conditions. When in contact with the ore block, the spring 6 acts as an elastic damper to push the ore block.

[0036] Working principle and usage process of this utility model:

[0037] Conveyor 1 conveys the screening frame 2, which holds the ore, to the right. When the screening frame 2 reaches the rear of the hopper 4, it stops moving. Hydraulic cylinder 3 is activated to move the screening frame 2 horizontally to the top of the hopper 4. Electromagnet 402 is activated to temporarily fix the top edge of the screening frame 2 to the bottom edge of the hopper 4. Hydraulic cylinder 405 drives the screening frame 2 to move horizontally and shake. During the shaking, smaller ore particles in the frame fall through the screen 201 into the hopper 4. The small ore particles in the hopper 4 are discharged from the outlet 403 to the conveyor belt 901 and transported to the next screening location. During the shaking screening process, the scraping mechanism operates. Hydraulic cylinder 701 is activated to move the push plate 7 to the left. The push plate 7 pushes the scraper 5 to move horizontally to the left at the same time. During the horizontal movement of the scraper 5, the upper layer of large ore in the screening frame 2 can be scraped off. The scraped large ore falls onto the left side of the conveyor belt 901 and is transported by the conveyor belt 901 to the next processing location. After scraping off large pieces of ore, the scraper 5 passes over the rounded corner guard 202 and is located on the left side of the screening frame 2. Therefore, after turning off the electromagnet 402 switch, the scraper 5 can pull the entire screening frame 2 to the right. Then, the robot, forklift, or manual transports it together with the ore left in the frame after screening to the next processing point. After the hydraulic cylinder 3 701 is reset, the hydraulic cylinder 1 3 can push the next screening frame 2 onto the hopper 4 for the next coarse screening of ore.

[0038] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An ore coarse screening device, characterized in that, include: A screening frame (2) is provided with a screen (201) at its bottom; The hopper (4) has a cross support bar (401) fixedly connected to its top opening. Several electromagnets (402) are fixed to the edge of the top of the hopper (4). A base (404) is fixed to the bottom of the hopper (4). A hydraulic cylinder (405) is fixedly installed on the outside of the base (404). The scraping mechanism is located above the screening frame (2).

2. The ore coarse screening device according to claim 1, characterized in that: The scraping mechanism includes a scraper (5), a spring (6) and a push plate (7). The scraper (5) and the push plate (7) are hinged together, and the right-angled spring (6) is installed at the angle between the scraper (5) and the push plate (7). Several hydraulic cylinders (701) are fixedly installed on the end of the push plate (7) away from the scraper (5).

3. The ore coarse screening device according to claim 2, characterized in that: The scraper (5) has a groove (502) on the side near the spring (6), and a slider (601) that cooperates with the groove (502) is fixedly connected to the outside of the spring (6).

4. The ore coarse screening device according to claim 2, characterized in that: The scraper (5) has mounting plates (503) fixed at both ends of its top. The two mounting plates (503) are hinged to the push plate (7) on opposite sides by a pivot pin.

5. The ore coarse screening device according to claim 2, characterized in that: A rounded corner guard (202) is fixedly provided on one side of the screening frame (2). The rounded corner guard (202) has a rounded chamfer on the side facing the inside of the screening frame (2). The rounded corner guard (202) is higher than the guard of the screening frame (2). A ∧-shaped notch (501) is provided at the bottom of the scraper (5). The bottom of the ∧-shaped notch (501) on the side away from the spring (6) is higher than the bottom of the other side.

6. The ore coarse screening device according to claim 5, characterized in that: The hopper (4) has a discharge port (403) on one side.

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