A crushing device for steel slag treatment

Abstract

This disclosure relates to the technical field of steel slag processing equipment. One embodiment of this disclosure provides a crushing device for steel slag processing, comprising: a feed pipe disposed inside the top of a crushing shell; an outer support fixed to the outside of the crushing shell; a discharge screening assembly disposed at the bottom of the crushing shell; a feed crushing assembly disposed on the feed pipe; and a grinding crushing assembly disposed inside the crushing shell. The feed crushing assembly includes a high-speed motor mounted on one side surface of the crushing shell. A pair of connecting pipes are disposed at the bottom of the feed pipe, and a rotating shaft is rotatably connected between the connecting pipes. One end of the rotating shaft is connected to the output end of the high-speed motor, and a pair of crushing frames are disposed on the rotating shaft, each located inside the connecting pipe. This technical solution solves the technical bottlenecks of traditional steel slag crushing devices in the prior art, which generally suffer from inconsistent particle sizes and cumbersome subsequent screening, making it difficult to meet the refined processing requirements for the resource utilization of steel slag.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of steel slag treatment equipment, specifically to a crushing device for steel slag treatment. Background Technology

[0002] In the field of steel slag recycling, the uniformity of crushing by the crushing device directly affects the steel slag purification efficiency and subsequent processing costs. However, traditional steel slag crushing devices generally suffer from technical bottlenecks such as inconsistent particle size and cumbersome subsequent screening, making it difficult to meet the refined processing requirements for steel slag resource utilization.

[0003] Existing crushing equipment suffers from significant structural defects: First, the crushing chamber design is rudimentary, often employing single-shaft hammer or jaw crushing methods. The movement trajectory of the hammer or jaw plate is fixed, resulting in uneven impact force on the steel slag within the crushing chamber. When processing components containing ferromagnetic and non-ferromagnetic materials of varying hardness, single-shaft crushing cannot specifically adjust the crushing force, leading to significant differences in the degree of crushing between hard silicon manganese oxide lumps and iron particles in the steel slag. For example, iron particles in the steel slag are easily over-crushed into fine powder, while high-hardness calcium silicate lumps remain as large particles, resulting in a wide particle size distribution of the crushed products. Second, there is a lack of a staged crushing mechanism. Traditional equipment does not have multi-layer crushing chambers or particle size adaptive adjustment structures. The steel slag undergoes only a single crushing after entering through the feed inlet, failing to achieve progressive refinement based on the material particle size. The crushed steel slag particles are of varying sizes, and the fine powder and coarse lumps mixed in need to be screened and classified through multiple stages using equipment such as vibrating screens and magnetic separators. Thirdly, the wear problem of the inner wall of the crushing chamber and the hammer is prominent. Traditional devices use crushing parts made of high manganese steel or cast iron. When processing steel slag with sharp edges, grooves or protrusions are easily formed on the surface of the parts, causing steel slag to accumulate in the wear pits, further aggravating the uneven crushing. Moreover, the worn parts need to be replaced frequently, increasing maintenance costs.

[0004] As the utilization of steel slag resources develops towards higher added value, uniform crushing and reduced subsequent screening have become core requirements for crushing equipment. Traditional equipment, due to its drawbacks such as "single crushing method, lack of grading structure, and severe wear," often results in low purification efficiency due to uneven crushing when dealing with large-scale steel slag processing in steel enterprises. There is an urgent need to develop new crushing equipment for steel slag purification with multi-stage crushing and adaptive particle size adjustment functions to solve the industry problems of "uneven particle size and cumbersome screening." Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a crushing device for steel slag treatment, which solves the technical bottlenecks of inconsistent particle size and cumbersome subsequent screening in traditional steel slag crushing devices in the prior art, making it difficult to meet the fine processing requirements for steel slag resource utilization.

[0006] According to one aspect, at least one embodiment of this disclosure provides a crushing apparatus for steel slag treatment, comprising:

[0007] The crushing shell and the feeding pipe are disposed inside the top of the crushing shell;

[0008] An outer support frame and a discharge sieving assembly are provided. The outer support frame is fixed to the outside of the crushing shell, and the discharge sieving assembly is located at the bottom of the crushing shell.

[0009] A feeding and crushing assembly is disposed on the feeding pipe;

[0010] A grinding and pulverizing assembly, wherein the grinding and pulverizing assembly is disposed inside the pulverizing shell;

[0011] The feeding and crushing assembly includes a high-speed motor, which is installed on one side surface of the crushing shell. A pair of connecting pipes are provided at the bottom of the feeding pipe, and a rotating shaft is rotatably connected between the connecting pipes. One end of the rotating shaft is connected to the output end of the high-speed motor, and a pair of crushing frames are provided on the rotating shaft, which are respectively located inside the connecting pipes.

[0012] As a further technical solution, a feeding hopper is provided at the top of the feeding pipe, and a horizontal shaft is provided inside the feeding pipe. The horizontal shaft is rotated by a motor, and a pair of spiral blades are provided on the horizontal shaft. The spiral blades correspond to the position of the connecting pipe.

[0013] As a further technical solution, the grinding and pulverizing assembly includes a pulverizing roller, which is rotatably connected inside the pulverizing shell. A main motor is provided on one side of the pulverizing shell, and the output end of the main motor is connected to the pulverizing roller. The surface of the pulverizing roller is provided with a plurality of pulverizing protrusions.

[0014] As a further technical solution, the discharge sieving assembly includes a discharge hood, which is connected to the bottom of the crushing shell and is offset from the center of the crushing shell. A sieve plate is movably connected inside the discharge hood.

[0015] As a further technical solution, a sliding hole is provided on one end surface of the sieve plate, a drive motor is provided on one side of the discharge hood, and an eccentric shaft is provided at the output end of the drive motor. One end of the eccentric shaft is slidably fitted into the sliding hole.

[0016] As a further technical solution, the surface of the pulverizing protrusion has an arc-shaped transition protrusion structure.

[0017] As a further technical solution, the feeding hopper is located in the center between the pair of connecting pipes.

[0018] As a further technical solution, a sealing plate is provided inside the crushing shell, and the sealing plate is fitted onto the outside of the lower end of the connecting pipe.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the feeding crushing component is driven by a high-speed motor to rotate the crushing frame at high speed in the connecting pipe, which performs impact shearing and preliminary crushing of the steel slag. The spiral blades push the steel slag evenly into the connecting pipe to avoid accumulation. The crushing frame is made of high-strength wear-resistant material, which can adapt to the high hardness of the steel slag. It completes the preliminary crushing before the steel slag enters the main crushing area, reduces the subsequent grinding pressure, makes the steel slag particles more uniform in size, and reduces the amount of subsequent screening work.

[0021] 2. In this disclosure, the main motor of the grinding and crushing component drives the crushing roller to rotate. The crushing protrusions on the roller surface are arranged in an alternating manner to squeeze and grind the initially crushed steel slag, further refining the particles. The double-layer composite structure of the crushing roller has an inner support layer and an outer wear-resistant layer, which effectively resists wear and impact. The arc-shaped transition protrusion structure allows large particles that are not fully crushed to roll back and grind again, ensuring that the crushing is sufficient and that the particle size of the steel slag is more in line with the requirements of subsequent processing, thereby improving the uniformity of crushing.

[0022] 3. In this disclosure, the drive motor of the discharge screening component drives the screen plate to reciprocate in an elliptical trajectory through the eccentric shaft frame to screen the crushed steel slag. The conical screen holes of the screen plate prevent clogging, and the off-center design of the discharge hood causes the insufficiently crushed particles to roll back and be ground again. The screening efficiency is high, and qualified particles can be quickly separated from unqualified particles, reducing manual screening, improving the efficiency of steel slag treatment, and reducing labor intensity. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0025] Figure 2 This is an isometric drawing of the present disclosure;

[0026] Figure 3 This is an isometric sectional view of the present disclosure;

[0027] Figure 4 This is another isometric sectional view of this disclosure;

[0028] Figure 5Appendix to this disclosure Figure 1 Enlarged view of part A in the middle;

[0029] In the diagram: 1. Crushing shell; 2. Feed pipe; 3. Outer support; 4. Feeding and crushing assembly; 4-1. High-speed motor; 4-2. Connecting pipe; 4-3. Rotating shaft; 4-4. Crushing frame; 4-5. Feed hopper; 4-6. Horizontal shaft; 4-7. Spiral blades; 5. Grinding and crushing assembly; 5-1. Crushing roller; 5-2. Main motor; 5-3. Crushing protrusion; 6. Discharge and sieving assembly; 6-1. Discharge hood; 6-2. Screen plate; 6-3. Sliding hole; 6-4. Drive motor; 6-5. Eccentric shaft frame; 7. Sealing plate. Detailed Implementation

[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0031] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1-5 As shown, a crushing apparatus for steel slag treatment is illustrated in one embodiment of this disclosure, comprising:

[0037] The crushing shell 1 and the feeding pipe 2 are disposed inside the top of the crushing shell 1;

[0038] The outer support 3 and the discharge screening assembly 6 are provided. The outer support 3 is fixed to the outside of the crushing shell 1, and the discharge screening assembly 6 is provided at the bottom of the crushing shell 1.

[0039] Feeding and crushing assembly 4, which is disposed on the feeding pipe 2;

[0040] Grinding and pulverizing assembly 5, wherein the grinding and pulverizing assembly 5 is disposed inside the pulverizing housing 1;

[0041] The feeding and crushing assembly 4 includes a high-speed motor 4-1, which is mounted on one side of the crushing housing 1. A pair of connecting pipes 4-2 are provided at the bottom of the feeding pipe 2, and a rotating shaft 4-3 is rotatably connected between the connecting pipes 4-2. One end of the rotating shaft 4-3 is connected to the output end of the high-speed motor 4-1. A pair of crushing frames 4-4 are provided on the rotating shaft 4-3, and the crushing frames 4-4 are respectively located inside the connecting pipes 4-2. A feeding hopper 4-5 is provided at the top of the feeding pipe 2. A horizontal shaft 4-6 is provided inside the feeding pipe 2, and the horizontal shaft 4-6 is rotated by a motor. A pair of spiral blades 4-7 are provided on the horizontal shaft 4-6, and the spiral blades 4-7 are positioned corresponding to the connecting pipes 4-2.

[0042] In some examples, a feeding and crushing assembly 4 is designed to achieve preliminary crushing of large steel slag particles. This assembly uses a pair of connecting pipes 4-2 at the bottom of the feeding pipe 2 as material channels. A high-speed motor 4-1 drives a rotating shaft 4-3, causing the crushing frame 4-4 to rotate at high speed within the connecting pipes 4-2. When the steel slag enters the feeding pipe 2 from the feeding hopper 4-5, the spiral blades 4-7 on the horizontal shaft 4-6, driven by the motor, push the steel slag to the inlet of the connecting pipes 4-2. The high-speed rotating crushing frame 4-4 impacts and shears the steel slag, breaking large particles into smaller sizes. The pushing action of the spiral blades 4-7 ensures that the steel slag is evenly distributed into the connecting pipes 4-2, preventing material accumulation that could affect crushing efficiency. The crushing frame 4-4 is made of high-strength alloy steel with a hardened surface, exhibiting good wear resistance and impact resistance, and is adaptable to the high hardness of the steel slag. Through the synergistic action of the high-speed rotating crusher 4-4 and the spiral blades 4-7, the feeding crushing component 4 completes the initial crushing of the steel slag before it enters the main crushing area, reducing the subsequent grinding pressure and improving the overall crushing efficiency.

[0043] like Figures 1-5 As shown in the figure, the grinding and pulverizing assembly 5 in this embodiment includes a pulverizing roller 5-1, which is rotatably connected inside the pulverizing shell 1. A main motor 5-2 is provided on one side of the pulverizing shell 1, and the output end of the main motor 5-2 is connected to the pulverizing roller 5-1. A plurality of pulverizing protrusions 5-3 are provided on the surface of the pulverizing roller 5-1.

[0044] In some examples, a grinding and pulverizing assembly 5 is designed to further reduce the size of the steel slag. This assembly centers on a pulverizing roller 5-1 within the pulverizing housing 1. A main motor 5-2 drives the roller 5-1 to rotate. The pulverizing protrusions 5-3 on the roller surface employ an alternating serrated structure to increase the contact area and grinding force with the steel slag. When the initially pulverized steel slag falls into the area of ​​the pulverizing roller 5-1, the protrusions 5-3 compress and grind it, breaking it into smaller particles. The pulverizing roller 5-1 adopts a double-layer composite structure: an inner layer of high-strength alloy steel provides support, while the outer layer is a high-chromium alloy wear-resistant layer, effectively resisting wear and impact from the steel slag. Through the combined design of the pulverizing roller 5-1 and the protrusions 5-3, the grinding and pulverizing assembly 5 can further refine the particle size of the steel slag, meeting the size requirements of subsequent processing techniques.

[0045] like Figures 1-5As shown in the figure, the discharge sieving assembly 6 proposed in this embodiment includes a discharge hood 6-1, which is connected to the bottom of the crushing shell 1. The discharge hood 6-1 is offset from the center of the crushing shell 1. A screen plate 6-2 is movably fitted inside the discharge hood 6-1. A sliding hole 6-3 is opened on one end surface of the screen plate 6-2. A drive motor 6-4 is provided on one side of the discharge hood 6-1. An eccentric shaft bracket 6-5 is provided at the output end of the drive motor 6-4. One end of the eccentric shaft bracket 6-5 is slidably fitted into the sliding hole 6-3.

[0046] In some examples, a discharge sieve assembly 6 is designed to achieve efficient active screening. This assembly uses a discharge hood 6-1, offset from the center of the crushing shell 1, as the screening space. A screen plate 6-2 is movably fitted inside the discharge hood 6-1. A drive motor 6-4, through the cooperation of an eccentric shaft 6-5 and the sliding holes 6-3 of the screen plate 6-2, drives the screen plate 6-2 to perform a reciprocating motion along an elliptical trajectory. When the crushed steel slag falls onto the screen plate 6-2, the rapid shaking of the screen plate 6-2 accelerates the screening process. The screen plate 6-2 is made of high-strength spring steel, possessing good elasticity and fatigue resistance. The screen holes on its surface are conical, wider at the top and narrower at the bottom to prevent clogging. The connection point between the discharge hood 6-1 and the crushing shell 1 is higher than the bottom center position. Thus, when the crushing roller 5-1 rotates, larger particles that are not fully crushed will roll back through the surface curvature and be ground again, preventing them from directly entering the discharge hood 6-1.

[0047] The eccentric drive of the drive motor 6-4 and the rapid shaking of the screen plate 6-2 enable the crushed steel slag to be discharged quickly.

[0048] For example, such as Figure 3 As shown, the surface of the crushing protrusion 5-3 has an arc-shaped transition protrusion structure.

[0049] In some examples, the curved transition of the boss design allows larger steel slag to slide back for secondary crushing and grinding, resulting in a more thorough processing effect.

[0050] For example, such as Figure 4 As shown, the feeding hopper 4-5 is located in the center between the pair of connecting pipes 4-2.

[0051] In some examples, by setting it in the center, the incoming steel slag can be dispersed and conveyed to both sides, and then crushed simultaneously by two crushing racks 4-4, which can speed up the process.

[0052] For example, such as Figure 4 As shown, a sealing plate 7 is provided inside the crushing shell 1, and the sealing plate 7 is fitted onto the outside of the lower end of the connecting pipe 4-2.

[0053] In some examples, by providing a sealing plate 7, the top of the crushing shell 1 can be sealed, reducing the environmental impact of dust generation.

[0054] In actual use: the outer bracket 3 is fixed to the ground, the crushing shell 1 is installed on the outer bracket 3, the feed pipe 2 is set on the top of the crushing shell 1, the high-speed motor 4-1 of the feeding crushing assembly 4 is installed on one side of the crushing shell 1, the connecting pipe 4-2 is fixed to the bottom of the feed pipe 2, the rotating shaft 4-3 is rotatably connected between the connecting pipes 4-2 and one end is connected to the output end of the high-speed motor 4-1, the crushing frame 4-4 is installed on the rotating shaft 4-3 and located inside the connecting pipe 4-2, the feeding hopper 4-5 is installed on the top of the feed pipe 2, the horizontal shaft 4-6 is installed inside the feed pipe 2 through the motor, the spiral blade 4-7 is installed on the horizontal shaft 4-6 and corresponds to the position of the connecting pipe 4-2, the crushing roller 5-1 of the grinding and crushing assembly 5 is rotatably connected inside the crushing shell 1, and the main motor... 5-2 is installed on one side of the crushing shell 1 and its output end is connected to the crushing roller 5-1. The crushing protrusion 5-3 is installed on the surface of the crushing roller 5-1. The discharge hood 6-1 of the discharge screening assembly 6 is connected to the bottom of the crushing shell 1 and is off-center. The screen plate 6-2 is movably fitted inside the discharge hood 6-1. The drive motor 6-4 is installed on one side of the discharge hood 6-1. One end of the eccentric shaft bracket 6-5 is connected to the output end of the drive motor 6-4 and the other end is slidably fitted inside the sliding hole 6-3 of the screen plate 6-2. The sealing plate 7 is fitted outside the lower end of the connecting pipe 4-2. When in use, the steel slag enters from the feeding hopper 4-5, the spiral blade 4-7 pushes it to the connecting pipe 4-2, the high-speed motor 4-1 drives the crushing frame 4-4 to crush it, and after falling into the crushing shell 1, the crushing roller 5-1 grinds it. Finally, the screen plate 6-2 screens and discharges it.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A crushing device for steel slag treatment, characterized by, include: The crushing shell (1) and the feeding pipe (2) are disposed inside the top of the crushing shell (1); The outer support (3) and the discharge sieve assembly (6) are provided. The outer support (3) is fixed outside the crushing shell (1), and the discharge sieve assembly (6) is provided at the bottom of the crushing shell (1). Feeding and crushing assembly (4), the feeding and crushing assembly (4) is disposed on the feeding pipe (2); Grinding and pulverizing assembly (5), wherein the grinding and pulverizing assembly (5) is disposed inside the pulverizing shell (1); The feeding and crushing assembly (4) includes a high-speed motor (4-1), which is installed on one side surface of the crushing shell (1). A pair of connecting pipes (4-2) are provided at the bottom of the feeding pipe (2). A rotating shaft (4-3) is rotatably connected between the connecting pipes (4-2). One end of the rotating shaft (4-3) is connected to the output end of the high-speed motor (4-1). A pair of crushing racks (4-4) are provided on the rotating shaft (4-3), and the crushing racks (4-4) are respectively located inside the connecting pipes (4-2).

2. The crushing device for steel slag treatment according to claim 1, characterized by The top of the feeding pipe (2) is provided with a feeding hopper (4-5), and a horizontal shaft (4-6) is provided inside the feeding pipe (2). The horizontal shaft (4-6) is rotated by a motor. A pair of spiral blades (4-7) are provided on the horizontal shaft (4-6), and the spiral blades (4-7) are positioned corresponding to the connecting pipe (4-2).

3. The crushing device for steel slag treatment according to claim 1, characterized by The grinding and pulverizing assembly (5) includes a pulverizing roller (5-1), which is rotatably connected inside the pulverizing shell (1). A main motor (5-2) is provided on one side of the pulverizing shell (1), and the output end of the main motor (5-2) is connected to the pulverizing roller (5-1). A plurality of pulverizing protrusions (5-3) are provided on the surface of the pulverizing roller (5-1).

4. The crushing device for steel slag treatment according to claim 1, characterized by The discharge sieving assembly (6) includes a discharge hood (6-1), which is connected to the bottom of the crushing shell (1). The discharge hood (6-1) is offset from the center of the crushing shell (1), and a sieve plate (6-2) is movably fitted inside the discharge hood (6-1).

5. The crushing device for steel slag treatment according to claim 4, characterized by The sieve plate (6-2) has a sliding hole (6-3) on one end surface. A drive motor (6-4) is provided on one side of the discharge hood (6-1). An eccentric shaft bracket (6-5) is provided at the output end of the drive motor (6-4). One end of the eccentric shaft bracket (6-5) is slidably fitted into the sliding hole (6-3).

6. The crushing device for steel slag treatment according to claim 3, characterized by The surface of the crushing protrusion (5-3) has an arc-shaped transition protrusion structure.

7. The crushing device for steel slag treatment according to claim 2, characterized by The feeding hopper (4-5) is located in the center between the pair of connecting pipes (4-2).

8. The crushing device for steel slag treatment according to claim 1, characterized by The crushing shell (1) is provided with a sealing plate (7) inside, and the sealing plate (7) is fitted onto the outside of the lower end of the connecting pipe (4-2).

Images