Iron ore screening device

Abstract

The utility model relates to the field of iron ore crushing and screening, and discloses an iron ore screening device which comprises a crushing box, a feeding hopper is fixedly installed on the left side of the crushing box, a driven wheel is arranged on the front surface of the lower end of the crushing box, a screening roller is arranged at the lower end of the inner wall of the crushing box, and the screening roller is arranged on the rear surface of the driven wheel. A crushing roller is arranged on the inner wall of the crushing box, a feeding assembly is arranged on the inner wall of the crushing box and close to the upper portion of the crushing roller, the feeding assembly comprises a baffle, and the baffle is inserted into the left side of the crushing box and close to the lower portion of the feeding hopper. According to the device, the guide groove is aligned with the clamping block by rotating the limiting disc, the pull rod is pulled outwards, the baffle is driven to move outwards, the downward falling amount of iron ore can be controlled by controlling the opening degree of the baffle, and therefore control can be conducted according to requirements; the problems of equipment failure, production interruption and the like caused by unstable or unreasonable material supply are reduced, the production efficiency is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of iron ore crushing and screening, in particular to an iron ore screening device. Background Art

[0002] Iron ore is an important raw material for the steel industry, and its mining and processing are of great significance to the development of the national economy. In the processing of iron ore, screening is a key link. Its purpose is to separate the mined ore according to particle size, magnetic properties and other characteristics to improve the grade and quality of the iron ore and provide high-quality raw materials for subsequent smelting and processing.

[0003] After searching, Chinese patent announcement number: CN221245335U discloses an integrated iron ore crushing and screening device, which belongs to the field of iron ore crushing and screening, including a bottom plate, a frame is provided on one side above the bottom plate, a crushing box is provided above the frame, crushing rollers are symmetrically installed inside the crushing box through bearings, a power box is provided on one side of the crushing box, the two crushing roller power gears are placed inside the power box, and the two crushing roller power teeth are meshed with each other, a discharge port is provided at the bottom of the crushing box, and lower extension plates are symmetrically provided above the inside of the bottom plate, the two lower extension plates are downward, and a rear baffle is provided on the rear side between the two lower extension plates, and the crushing roller and the screening roller are respectively driven to rotate by the same motor. When the ore enters the equipment, the ore is first crushed by the rotation of the crushing roller, and then falls to the surface of the screening roller, and the iron element in the ore powder is adsorbed and separated by the internal magnetic block.

[0004] In the above technology, although iron ore can be added into the crushing box for crushing operations, in actual operation, the iron ore added into the crushing box directly falls onto the crushing roller for crushing. When the amount of iron ore poured is large, a large amount of iron ore acts on the crushing roller at the same time, which brings a huge load to the crushing roller, requiring the crushing roller to operate under high load conditions, accelerating the wear of the crushing roller, shortening its service life, and may also cause the crushing roller to malfunction due to overload, affecting the normal progress of the entire crushing process and reducing production efficiency. For this reason, an iron ore screening device is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an iron ore screening device, which aims to improve the problem in the prior art that "due to the lack of control over the amount of iron ore feed, when more iron ore is poured in, the load on the crushing roller is greater, thereby reducing the service life."

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an iron ore screening device, comprising a crushing box, a feed hopper is fixedly installed on the left side of the crushing box, a driven wheel is provided on the front surface of the lower end of the crushing box, a screening roller is provided on the lower end of the inner wall of the crushing box, and the screening roller is provided on the rear surface of the driven wheel, the inner wall of the crushing box is provided with a crushing roller, and a feed assembly is provided on the inner wall of the crushing box near the top of the crushing roller, and the feed assembly includes a baffle, which is inserted into the left side of the crushing box near the bottom of the feed hopper, and the left side of the baffle is fixedly connected to a pull rod, and the middle part of the bottom end of the baffle is fixedly connected to a card block and multiple groups are provided, and card slots are opened between the multiple groups of the card blocks, and the left side of the crushing box is rotatably connected to a limit plate near the bottom of the pull rod, and the right side of the limit plate is fixedly connected to a rubber pad.

[0007] As a further description of the above technical solution:

[0008] An extrusion assembly is provided on the inner wall of the middle part of the crushing box, close to the top of the screening roller and below the crushing roller. The extrusion assembly includes a rotating rod. A motor is fixedly connected to the left side of the rotating rod. The motor is installed in the middle of the crushing box. The rotating rod passes through and is rotatably connected to the left side of the crushing box. A sliding groove is provided on the outer wall of the rotating rod.

[0009] As a further description of the above technical solution:

[0010] Guide plates are fixedly connected to the inner walls of the left and right sides of the crushing box near the upper part of the baffle, and the top ends of the two groups of guide plates are both set as inclined surfaces.

[0011] As a further description of the above technical solution:

[0012] The rubber pad is rotatably connected to the left side of the crushing box, and a guide groove is provided on the top of the limiting plate.

[0013] As a further description of the above technical solution:

[0014] The left side of the limiting plate is fixedly connected with a shifting rod, and the top end of the limiting plate is fixedly connected with a second stopper.

[0015] As a further description of the above technical solution:

[0016] The left side of the crushing box is fixedly connected to the rear surface of the stopper 2, the block slides on the inner wall of the guide groove, and the limiting plate slides on the inner wall of the slot.

[0017] As a further description of the above technical solution:

[0018] The chute is arranged in an inclined shape, and the outer wall of the chute is slidably connected with a slider.

[0019] As a further description of the above technical solution:

[0020] The top end of the sliding block is fixedly connected with a push plate, and the rotating rod passes through and is rotatably connected to the inner wall of the push plate.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the guide groove is aligned with the card block by rotating the limit plate. At this time, the pull rod can be pulled outward to drive the baffle to move outward. The iron ore in the crushing box can fall downward by moving the baffle. By controlling the size of the baffle opening, the amount of iron ore falling downward can be controlled, thereby effectively controlling the actual production needs and the carrying capacity of the equipment, reducing equipment failures, production interruptions and other problems caused by unstable or unreasonable material supply, and improving production efficiency and service life.

[0023] 2. In the utility model, the motor drives the rotating rod to rotate, and the rotating rod drives the chute to rotate. The chute is set to an inclined shape, and the slider slides on the inner wall of the chute, so that the chute rotates to push the slider to move back and forth, and drives the push plate to move back and forth. The iron ore can be squeezed by the movement of the push plate to prevent the iron ore from accumulating and blocking above the screening roller, affecting the feeding, thereby improving the feeding efficiency and the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the crushing box in the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the limit plate and the baffle in the utility model;

[0027] Figure 4 This is a bottom-up schematic diagram of the three-dimensional cross-section of the crushing box in the present invention;

[0028] Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the push plate in the utility model.

[0029] Legend:

[0030] 1. Crushing box; 2. Driven wheel; 3. Feed hopper; 4. Pull rod; 5. Motor; 41. Baffle; 42. Limit plate; 43. Stopper 1; 44. Guide plate; 45. Stopper 2; 46. Clamping block; 47. Clamping slot; 48. Guide slot; 51. Rotating rod; 52. Push plate; 53. Slider; 54. Slide slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 2 and Figure 3 The utility model provides an embodiment of an iron ore screening device, comprising a crushing box 1 for crushing and screening iron ore, a feed hopper 3 for adding iron ore is fixedly installed on the left side of the crushing box 1, a driven wheel 2 is provided on the front surface of the lower end of the crushing box 1 to drive the screening roller to run, a screening roller for screening the crushed iron ore is provided on the lower end of the inner wall of the crushing box 1, and the screening roller is provided on the rear surface of the driven wheel 2, a crushing roller for crushing the iron ore is provided on the inner wall of the crushing box 1, and a feeding assembly is provided near the upper part of the crushing roller on the inner wall of the crushing box 1, and the feeding assembly includes a baffle 41 that can block the iron ore and control the amount of iron ore fed by moving the baffle 41. The baffle 41 is inserted into the left side of the crushing box 1 near the bottom of the feed hopper 3. The left side of the baffle 41 is fixedly connected to the pull rod 4 that drives the baffle 41 to move. The middle part of the bottom end of the baffle 41 is fixedly connected with a block 46 that cooperates with the card slot 47 and the limit plate 42 to limit the baffle 41. There are multiple groups of card blocks 46, and the limit plates 42 are rotated into the card slots 47 to limit the block 46 and the baffle 41. The left side of the crushing box 1 is rotatably connected to the bottom of the pull rod 4, and the right side of the limit plate 42 is fixedly connected to a rubber pad that increases the friction with the crushing box 1 to improve the limiting effect of the limit plate 42.

[0033] Reference Figure 1 、 Figure 4 and Figure 5 , an extrusion assembly is provided on the middle inner wall of the crushing box 1, near the top of the screening roller and below the crushing roller. The extrusion assembly includes a rotating rod 51 that drives the slide 54 to rotate. A motor 5 is fixedly connected to the left side of the rotating rod 51. The motor 5 can drive the rotating rod 51 to rotate. The motor 5 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The motor 5 is installed in the middle of the crushing box 1, and the rotating rod 51 passes through and is rotatably connected to the left side of the crushing box 1. The outer wall of the rotating rod 51 is provided with a slide 54 for the sliding of the slider 53.

[0034] Reference Figure 1 、 Figure 2 and Figure 3The left and right inner walls of the crushing box 1 are fixedly connected with guide plates 44 near the top of the baffle 41. The tops of the two sets of guide plates 44 are set to be inclined. The iron ore can be made to fall down along the inclined surface through the two sets of guide plates 44 set to be inclined. At the same time, when the baffle 41 moves, the iron ore above the baffle 41 can be pushed to fall down through the guide plates 44. The rubber pad is rotatably connected to the left side of the crushing box 1. The top of the limit plate 42 is provided with a guide groove 48 for the card block 46 to slide out. The baffle 41 can be moved outward to adjust the size of the opening through the guide groove 48. At the same time, the limit plate 42 can be rotated to make the limit plate 42 slide into the card slot 47 to limit the adjusted baffle 41.

[0035] Reference Figure 1 、 Figure 2 and Figure 3 The left side of the limit plate 42 is fixedly connected with a toggle lever for driving the limit plate 42 to rotate. The top of the limit plate 42 is fixedly connected with a second stopper 45. When it contacts the first stopper 43, the limit plate 42 can be limited to prevent the second stopper 45 from continuing to rotate. The left side of the crushing box 1 is fixedly connected with a matching second stopper 45 near the rear surface of the second stopper 45, which can limit the limit plate 42 to prevent the first stopper 43 from continuing to rotate. The blocking block 46 slides on the inner wall of the guide groove 48, and the limit plate 42 slides on the inner wall of the blocking groove 47.

[0036] Reference Figure 1 、 Figure 4 and Figure 5 The chute 54 is set to an inclined shape. The chute 54 is set to an inclined shape, so that the slider 53 slides along the inclined chute 54. The inclined chute 54 can make the slider 53 move left and right, thereby driving the push plate 52 to move left and right. The push plate 52 moves left and right to break up the accumulated iron ore to prevent it from being blocked above the screening roller and affecting the processing efficiency, thereby improving the feeding efficiency and improving the processing efficiency. The outer wall of the chute 54 is slidably connected to the slider 53 that drives the push plate 52 to move. The top of the slider 53 is fixedly connected to the push plate 52 that can push the iron ore by movement and push the iron ore away. The rotating rod 51 passes through and is rotatably connected to the inner wall of the push plate 52.

[0037] Working principle: When in use, first, the operator adds the iron ore to be screened into the crushing box 1 through the feed hopper 3. When the iron ore feed amount needs to be adjusted, the operator drives the limit plate 42 to rotate by toggling the lever. When the guide groove 48 of the limit plate 42 is aligned with the block 46, the stop block 1 43 and the stop block 2 45 contact and cooperate with each other to prevent the limit plate 42 from excessive rotation. The pull rod 4 is pulled outward, and the pull rod 4 drives the baffle 41 to move outward. The baffle 41 opens an opening of a certain size. By controlling the size of the opening of the baffle 41, the amount of iron ore falling downward is controlled. The iron ore falls downward along the two groups of guide plates 44 set as inclined planes. When the position of the baffle 41 is adjusted, the limit plate 42 is rotated in the opposite direction to make the limit plate 42 slide into the slot 47, and the baffle 41 with the adjusted position is limited and fixed. The rubber pad increases the friction between the limit plate 42 and the crushing box 1, thereby improving the limiting effect.

[0038] The fallen iron ore falls on the crushing roller, and the crushing roller crushes the iron ore. The crushed iron ore continues to fall to the screening roller. When the crushed iron ore falls from under the crushing roller, the motor 5 drives the rotating rod 51 to rotate. An inclined chute 54 is opened through the outer wall of the rotating rod 51, and the slider 53 is slidably connected to the outer wall of the chute 54. As the slider 53 moves left and right along the inclined chute 54, it drives the push plate 52 to move left and right. The push plate 52 moves left and right to squeeze the iron ore, which can break up and push the accumulated iron ore to prevent the iron ore from being blocked above the screening roller, thereby improving the feeding efficiency and processing efficiency. The iron ore broken up by the push plate 52 finally falls on the screening roller, and the screening roller screens the crushed iron ore to complete the entire iron ore screening process.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An iron ore screening device, comprising a crushing box (1), characterized in that: A feed hopper (3) is fixedly mounted on the left side of the crushing box (1), a driven wheel (2) is provided on the front surface of the lower end of the crushing box (1), a screening roller is provided on the lower end of the inner wall of the crushing box (1), and the screening roller is provided on the rear surface of the driven wheel (2), a crushing roller is provided on the inner wall of the crushing box (1), and a feed assembly is provided on the inner wall of the crushing box (1) near the upper side of the crushing roller, and the feed assembly includes a baffle (41), and the baffle (41) Inserted on the left side of the crushing box (1) near the bottom of the feed hopper (3), the left side of the baffle (41) is fixedly connected to the pull rod (4), the middle part of the bottom end of the baffle (41) is fixedly connected to the clamping block (46) and multiple groups are provided, and a clamping slot (47) is provided between the multiple groups of the clamping blocks (46), the left side of the crushing box (1) is rotatably connected to the bottom of the pull rod (4), and the right side of the limit plate (42) is fixedly connected to the rubber pad.

2. An iron ore screening device according to claim 1, characterized in that: An extrusion assembly is provided on the inner wall of the middle portion of the crushing box (1), close to the upper portion of the screening roller and below the crushing roller. The extrusion assembly comprises a rotating rod (51). A motor (5) is fixedly connected to the left side of the rotating rod (51). The motor (5) is installed in the middle portion of the crushing box (1). The rotating rod (51) passes through and is rotatably connected to the left side of the crushing box (1). A sliding groove (54) is provided on the outer wall of the rotating rod (51).

3. The iron ore screening device according to claim 1, characterized in that: Guide plates (44) are fixedly connected to the inner walls of the left and right sides of the crushing box (1) near the upper side of the baffle (41), and the top ends of the two groups of guide plates (44) are both arranged as inclined surfaces.

4. The iron ore screening device according to claim 1, characterized in that: The rubber pad is rotatably connected to the left side of the crushing box (1), and a guide groove (48) is provided on the top of the limiting plate (42).

5. The iron ore screening device according to claim 4, characterized in that: The left side of the limiting plate (42) is fixedly connected with a shifting rod, and the top end of the limiting plate (42) is fixedly connected with a second stopper (45).

6. The iron ore screening device according to claim 5, characterized in that: The left side of the crushing box (1) is fixedly connected to the rear surface of the second stopper (45), the first stopper (43), the clamping block (46) slides on the inner wall of the guide groove (48), and the limiting plate (42) slides on the inner wall of the clamping groove (47).

7. The iron ore screening device according to claim 2, characterized in that: The slide groove (54) is arranged in an inclined shape, and the outer wall of the slide groove (54) is slidably connected with a slider (53).

8. The iron ore screening device according to claim 7, characterized in that: The top end of the slider (53) is fixedly connected to a push plate (52), and the rotating rod (51) passes through and is rotatably connected to the inner wall of the push plate (52).

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