Iron ore crushing and screening device

Abstract

The invention discloses an iron ore crushing and screening device which comprises a crushing box and a crushing assembly, the crushing assembly is arranged in the crushing box, the crushing assembly is arranged in the crushing box and comprises a first sieve plate and a second sieve plate which are installed in the crushing box, and the first sieve plate and the second sieve plate are both obliquely installed at the bottom end of the crushing assembly; the first sieve plate and the second sieve plate are both internally provided with steel wire assemblies, the section of each steel wire assembly is in a rhombus shape, and each steel wire assembly comprises a fixing shaft installed on the inner wall of the first sieve plate and the inner wall of the second sieve plate. And due to the design that the fixed shaft and the steel shaft wheel are installed in the screen, the durability of the screen is greatly improved. The steel wire assemblies and the steel shaft wheels not only improve the strength and wear resistance of the screen, but also reduce direct impact on the screen through rotation of the steel balls, so that the service life of the screen is prolonged.

Description

Technical Field

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

[0002] Iron ore is a mineral aggregate containing iron or iron compounds that can be economically utilized. Natural iron ore is gradually separated into iron concentrate through crushing, grinding, magnetic separation, flotation, gravity separation and other processes. Iron concentrate is the main forging raw material for iron products.

[0003] Traditional iron ore crushing equipment usually adopts simple mechanical crushing methods, such as jaw crusher, cone crusher, etc. These devices can effectively crush iron ore into smaller particles, and then screen them through screens, which is convenient for subsequent sorting of iron ore. However, when screening iron ore powder, the screen is easily shortened due to long-term impact and friction, and it is also easy to replace the screen. At the same time, when screening a large amount of ore powder, the screening efficiency is low. Summary of the invention

[0004] The object of the present invention is to provide an iron ore crushing and screening device to solve the problem in the above background technology that when iron ore powder is screened, the screen is easily reduced in service life due to long-term impact and friction.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an iron ore crushing and screening device, comprising a crushing box and a crushing assembly, wherein the crushing assembly is arranged inside the crushing box, and the crushing assembly is arranged inside the crushing box, and the crushing assembly comprises screen plate 1 and screen plate 2 installed inside the crushing box, and the screen plate 1 and screen plate 2 are both obliquely installed at the bottom end of the crushing assembly, and the screen plate 1 and screen plate 2 are both installed with a steel wire assembly inside, and the cross-section of the steel wire assembly is diamond-shaped, and the steel wire assembly comprises a fixed shaft installed on the inner wall of the screen plate 1 and the screen plate 2, and a steel shaft wheel composed of steel balls is rotatably installed on the outer surface of the fixed shaft, and four spikes are installed on the outer surface of the steel shaft wheel, and an installation group frame is installed between every two of the spikes, and a protective pad is installed on the outer surface of the spikes.

[0006] As a preferred technical solution of the present invention, a support frame supporting sieve plate 1 and sieve plate 2 is installed inside the crushing box, the cross-section of the support frame is semicircular, and the sieve plate 1 and sieve plate 2 are both slidably installed inside the crushing box.

[0007] As a preferred technical solution of the present invention, a feed assembly is installed at the top of the crushing box, and the feed assembly includes a feed hopper installed on the top of the crushing box, a rotating wheel is rotatably installed inside the feed hopper, a drive motor is installed on the outer surface of the feed hopper, the output shaft of the drive motor is fixedly connected to the rotating wheel, the rotating wheel includes a plurality of rotating plates installed on the output shaft of the drive motor, and a space is formed between every two rotating plates, and a cutting knife is installed on the inner wall of the feed hopper close to the rotating wheel.

[0008] As a preferred technical solution of the present invention, a buffer mechanism is installed inside the crushing box, and the interior of the buffer mechanism includes a collecting barrel installed inside the crushing box, and the collecting barrel is located between the crushing assembly and the screening mechanism, and a spiral impeller is installed inside the collecting barrel, and a second driving motor is installed on the outer surface of the crushing box, and the output shaft of the second driving motor is installed with the spiral impeller, and a plurality of conical rods are installed on the surface of the collecting barrel close to the spiral impeller, and a plurality of protrusions are installed on the outer surface of the spiral impeller.

[0009] As a preferred technical solution of the present invention, a circulation mechanism is provided on the outer surface of the crushing box, and the circulation mechanism includes a cylinder installed on the outer surface of the crushing box, a feed port is installed between the bottom end of the cylinder and the screen plate one, a discharge port connected to the crushing box is installed on the top of the cylinder, a lifting screw rod is rotatably installed inside the cylinder, a drive motor three is installed on the top of the cylinder, the drive motor three is installed with the lifting screw rod, a spiral groove is opened on the outer surface of the lifting screw rod, and a plurality of clamping plates are installed inside the spiral groove.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The iron ore crushing and screening device of the present invention greatly enhances the durability of the screen by introducing the screen plate 1 and the screen plate 2 with diamond-shaped cross-section steel wire components, and the design of installing a fixed shaft and a steel shaft wheel inside. The steel wire component and the steel shaft wheel not only improve the strength and wear resistance of the screen, but also reduce the direct impact on the screen through the rotation of the steel ball, thereby extending the service life of the screen. In addition, the design of the screen plate makes it more convenient to replace the screen, thereby improving the maintenance efficiency of the equipment.

[0011] The present invention reduces the direct impact of iron ore powder on the screen by setting a spiral impeller, reduces the wear of the screen, and achieves effective buffering of the iron ore powder. The spiral impeller and cone rod design in the buffer mechanism can also perform spiral crushing on the stones that are not completely crushed in the iron ore, and the spiral conveying method helps to evenly distribute the crushed ore particles on the screen, avoiding the blockage and overload of the screen, thereby improving the screening efficiency and ore processing capacity.

[0012] The present invention realizes the cyclic screening of substandard ore powder by setting a circulation mechanism. The lifting screw rod and the card plate design in the circulation mechanism can return the ore powder that does not pass through the screen to the crushing assembly for re-crushing until it reaches the required particle size standard. This design not only improves the utilization rate of ore powder, but also ensures the accuracy and consistency of screening results, and more importantly, significantly improves the crushing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the crushing box of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the internal structure of the crushing box of the present invention; Figure 4 It is a schematic diagram of the structure of the screening plate 1 and the screening plate 2 of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the steel wire assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the runner of the present invention; Figure 7 It is a schematic diagram of the spiral impeller structure of the present invention; Figure 8 It is a schematic diagram of the lifting screw rod structure of the present invention.

[0014] In the figure: 1. crushing box; 2. feeding assembly; 21. feeding hopper; 22. driving motor 1; 23. rotating wheel; 24. cutting knife; 3. buffer mechanism; 31. collecting barrel; 32. spiral impeller; 33. cone rod; 34. bump; 35. driving motor 2; 4. screening mechanism; 41. sieve plate 1; 42. sieve plate 2; 43. steel wire assembly; 431. spikes; 432. protective pad; 433. mounting assembly frame; 444. steel shaft wheel; 445. fixed shaft; 44. supporting frame; 5. circulation mechanism; 51. cylinder; 52. feeding port; 53. lifting screw rod; 54. clamping plate; 55. driving motor 3; 56. discharging port; 6. crushing assembly. DETAILED DESCRIPTION

[0015] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0016] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0017] See also Figure 1-8 An iron ore crushing and screening device provided in an embodiment of the present application includes a crushing box 1 and a crushing assembly 6. The crushing assembly 6 is arranged inside the crushing box 1. The crushing assembly 6 is arranged inside the crushing box 1. The crushing assembly 6 includes a sieve plate 1 41 and a sieve plate 2 42 installed inside the crushing box 1. The sieve plate 1 41 and the sieve plate 2 42 are both obliquely installed at the bottom end of the crushing assembly 6. A wire assembly 43 is installed inside the sieve plate 1 41 and the sieve plate 2 42.

[0018] Among them, the screen plate 1 41 uses transverse steel wires, and the screen plate 2 42 uses longitudinal steel wires. At this time, the grid structure formed by the cross arrangement of the transverse and longitudinal steel wires can more finely capture iron ore powder particles of different sizes, and the combination of the transverse and longitudinal steel wires helps to improve the flow performance of the material on the screen and reduce blockage and accumulation. This can not only improve the screening efficiency, but also reduce the wear of the screen and extend the service life. At the same time, the screen has a stronger ability to distinguish fine particles, which can ensure that a more uniform powder product that meets the specific particle size requirements is screened out.

[0019] In the technical solution of the embodiment of the present application, the cross-section of the steel wire assembly 43 is diamond-shaped, and the steel wire assembly 43 includes a fixed shaft 445 installed on the inner walls of the sieve plate 1 41 and the sieve plate 2 42. The outer surface of the fixed shaft 445 is rotatably installed with a steel shaft wheel 444 composed of steel balls. The outer surface of the steel shaft wheel 444 is installed with four spikes 431, and an installation assembly frame 433 is installed between every two spikes 431. The outer surface of the spike 431 is installed with a protective pad 432.

[0020] Among them, the design of the diamond cross-section steel wire increases the surface area of ​​the sieve plate 1 41 and the sieve plate 2 42, so that more iron ore powder can contact the sieve plate 1 41 and the sieve plate 2 42 at the same time, thereby increasing the screening rate. In addition, the rotation of the steel wire on the steel shaft wheel 444 helps the material to pass through the sieve plate 1 41 and the sieve plate 2 42 more smoothly, reducing blockage and accumulation, and further improving the screening efficiency. The diamond cross-section steel wire assembly 43 can disperse the direct impact force of the material on the sieve plate 1 41 and the sieve plate 2 42, and through the design of the protective pad 432, the degree of wear of the sieve plate 1 41 and the sieve plate 2 42 is effectively reduced. At the same time, the rotation of the steel ball on the fixed shaft 445 plays a role of buffering and lubrication, further extending the service life of the sieve plate 1 41 and the sieve plate 2 42.

[0021] In some examples, a support frame 44 for supporting sieve plate 1 41 and sieve plate 2 42 is installed inside the crushing box 1 , and the cross-section of the support frame 44 is semicircular. Both sieve plate 1 41 and sieve plate 2 42 are slidably installed inside the crushing box 1 .

[0022] Among them, the semicircular support frame 44 can not only support the sieve plate 1 41 and the sieve plate 2 42, but also position the sieve plate 1 41 and the sieve plate 2 42, so as to facilitate the replacement and adjustment of the spacing between the sieve plates 1 41 and the sieve plate 2 42 to achieve screening of different apertures. At the same time, the semicircular shape can prevent the gravel from stacking on the support frame 44 and affecting the installation accuracy of the sieve plates 1 41 and the sieve plates 2 42.

[0023] In other examples, a feed assembly 2 is installed at the top of the crushing box 1, and the feed assembly 2 includes a feed hopper 21 installed on the top of the crushing box 1. A rotating wheel 23 is rotatably installed inside the feed hopper 21. The rotating wheel 23 includes a plurality of rotating plates installed on the output shaft of a driving motor 22, and a space is formed between every two rotating plates. A driving motor 22 is installed on the outer surface of the feed hopper 21, and the output shaft of the driving motor 22 is fixedly connected to the rotating wheel 23.

[0024] Among them, the iron ore feed amount can be controlled by the rotating wheel 23 composed of multiple rotating plates. The rotating wheel 23 composed of multiple rotating plates can accurately control the iron ore feed amount by adjusting the rotation speed of the rotating plates, which can reduce the damage or shutdown of the crushing component 6 caused by material accumulation or shortage, thereby improving the overall production efficiency.

[0025] In some other examples, a cutting knife 24 is installed on the inner wall of the feed hopper 21 close to the rotating wheel 23 .

[0026] Among them, the iron ore on the surface of the wheel 23 can be cut by the cutting knife 24, so that the iron ore can fill the inside of the rotating plate, thereby avoiding the jamming of the rotating plate, and the wheel 23 can stably and quantitatively guide the iron ore into the crushing component for crushing, thereby improving the stability of the feeding.

[0027] In other examples, a buffer mechanism 3 is installed inside the crushing box 1, and the interior of the buffer mechanism 3 includes a collecting barrel 31 installed inside the crushing box 1, and the collecting barrel 31 is located between the crushing assembly 6 and the screening mechanism 4, and a spiral impeller 32 is installed inside the collecting barrel 31. A drive motor 2 35 is installed on the outer surface of the crushing box 1, and the output shaft of the drive motor 2 35 is installed with the spiral impeller 32.

[0028] Among them, the crushing component 6 and the screening mechanism 4 are provided with a spiral impeller 32. When the material enters the crushing area, the spiral impeller 32 can push the material to move along a specific path, ensuring that the material can pass through the crushing component 6 evenly and quickly, and then enter the screening mechanism 4 for screening, and help reduce the residence time of the material between the crushing component 6 and the screening mechanism 4, thereby improving the overall processing efficiency; at the same time, the spiral impeller 32 helps to reduce the direct impact of the material on the crushing component 6 and the screening mechanism 4. Through the buffering effect of the spiral impeller 32, the material can enter the crushing component 6 and the screening mechanism 4 more smoothly, thereby reducing the wear of these components and extending the service life of the equipment.

[0029] In some other examples, a plurality of cone rods 33 are installed on the surface of the collecting barrel 31 close to the spiral impeller 32 , and a plurality of protrusions 34 are installed on the outer surface of the spiral impeller 32 .

[0030] The bumps 34 on the surface of the spiral impeller 32 can increase the contact area with the material, so that the material can be more effectively stirred during the rotation process, and the material can be more evenly distributed around the spiral impeller 32; the bumps 34 will exert a certain impact force on the material during the rotation process, which helps to break up larger material particles and make it easier for them to pass through the subsequent screening net. In addition, the design of the cone rod 33 can change the flow state of the material around the spiral impeller 32, reducing the accumulation and blockage of the material on the blade surface.

[0031] In other examples, a circulation mechanism 5 is provided on the outer surface of the crushing box 1, and the circulation mechanism 5 includes a cylinder 51 installed on the outer surface of the crushing box 1, a feed port 52 is installed between the bottom end of the cylinder 51 and the screen plate 41, a discharge port 56 connected to the crushing box 1 is installed at the top of the cylinder 51, a lifting screw rod 53 is rotatably installed inside the cylinder 51, a drive motor 55 is installed on the top of the cylinder 51, the drive motor 55 is installed with the lifting screw rod 53, a spiral groove is opened on the outer surface of the lifting screw rod 53, and a plurality of clamping plates 54 are installed inside the spiral groove.

[0032] Among them, after the sieve plate 1 41 and the sieve plate 2 42 screen the iron ore powder, some larger stones produced can be transported back to the crushing component 6 through the spiral groove formed by the lifting screw rod 53 and the cylinder 51 until the required particle size standard is reached, which not only improves the utilization rate of the ore powder, but also ensures the accuracy and consistency of the screening results. The spiral groove and the clamping plate 54 can continuously limit the stones, reduce sliding, and ensure stable transportation and crushing quality of the stones.

[0033] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. An iron ore crushing and screening device, comprising a crushing box (1) and a crushing assembly (6), characterized in that: The crushing assembly (6) is arranged inside the crushing box (1); the crushing assembly (6) is arranged inside the crushing box (1); The crushing assembly (6) comprises a sieve plate 1 (41) and a sieve plate 2 (42) installed inside the crushing box (1); the sieve plate 1 (41) and the sieve plate 2 (42) are both installed at an angle at the bottom end of the crushing assembly (6); and a wire assembly (43) is installed inside the sieve plate 1 (41) and the sieve plate 2 (42); The cross section of the steel wire assembly (43) is rhombus-shaped. The steel wire assembly (43) comprises a fixed shaft (445) mounted on the inner wall of the first sieve plate (41) and the second sieve plate (42). A steel shaft wheel (444) composed of steel balls is rotatably mounted on the outer surface of the fixed shaft (445). Four spikes (431) are mounted on the outer surface of the steel shaft wheel (444). An installation assembly frame (433) is mounted between every two of the spikes (431). A protective pad (432) is mounted on the outer surface of the spike (431).

2. The iron ore crushing and screening device according to claim 1, characterized in that: A support frame (44) for supporting sieve plate 1 (41) and sieve plate 2 (42) is installed inside the crushing box (1); the cross section of the support frame (44) is semicircular; the sieve plate 1 (41) and sieve plate 2 (42) are both slidably installed inside the crushing box (1).

3. The iron ore crushing and screening device according to claim 1, characterized in that: The top of the crushing box (1) is connected to a feed assembly (2), the feed assembly (2) comprising a feed hopper (21) mounted on the top of the crushing box (1), a rotating wheel (23) rotatably mounted inside the feed hopper (21), a drive motor (22) mounted on the outer surface of the feed hopper (21), and an output shaft of the drive motor fixedly connected to the rotating wheel (23); The rotating wheel (23) comprises a plurality of rotating plates mounted on the output shaft of a driving motor (22), and a space is formed between every two rotating plates. A cutting knife (24) is mounted on the inner wall of the feeding hopper (21) close to the rotating wheel (23).

4. The iron ore crushing and screening device according to claim 1, characterized in that: A buffer mechanism (3) is installed inside the crushing box (1), the buffer mechanism (3) includes a collecting barrel (31) installed inside the crushing box (1), and the collecting barrel (31) is located between the crushing assembly (6) and the screening mechanism (4), a spiral impeller (32) is installed inside the collecting barrel (31), and a second drive motor (35) is installed on the outer surface of the crushing box (1), and the output shaft of the second drive motor (35) is installed with the spiral impeller (32); A plurality of conical rods (33) are installed on the surface of the collecting barrel (31) close to the spiral impeller (32), and a plurality of protrusions (34) are installed on the outer surface of the spiral impeller (32).

5. The iron ore crushing and screening device according to claim 1, characterized in that: The outer surface of the crushing box (1) is provided with a circulation mechanism (5), the circulation mechanism (5) comprising a cylinder (51) mounted on the outer surface of the crushing box (1), a feed port (52) being mounted between the bottom end of the cylinder (51) and the screen plate 1 (41), a discharge port (56) being mounted on the top end of the cylinder (51) and being connected to the crushing box (1), a lifting screw rod (53) being rotatably mounted inside the cylinder (51), a drive motor 3 (55) being mounted on the top end of the cylinder (51), the drive motor 3 (55) being mounted on the lifting screw rod (53), a spiral groove being formed on the outer surface of the lifting screw rod (53), and a plurality of clamping plates (54) being mounted inside the spiral groove.

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