A steel slag aggregate pretreatment device

Abstract

This application relates to a steel slag aggregate pretreatment device, belonging to the field of steel slag treatment technology. It includes a combined crushing assembly, a first conveying assembly, a screening assembly, and a second conveying assembly. Through the superimposed structure of the crushing and breaking boxes and the design of the S-shaped crushing channel in the combined crushing assembly, the steel slag is sequentially crushed by the first impact breaker, the second impact breaker, and the first, second, third, and fourth impact plates during its descent, forming a composite path of "multiple impacts + reversible crushing." After the crushed steel slag falls into the crushing box, the receiving plate is driven to rotate by a third servo motor, and the arc-shaped guide plate throws the steel slag onto the metal impact block to achieve "stone-on-stone" crushing, dispersing the crushing force to reduce wear on individual components. The first and second servo motors can independently adjust the speed of the breaker hammers to adapt to steel slag of different hardness.

Description

Technical Field

[0001] This application relates to the field of steel slag treatment technology, and in particular to a steel slag aggregate pretreatment device. Background Technology

[0002] Steel slag is a solid waste generated during the iron and steel smelting process, accounting for approximately 15% to 20% of crude steel production. Traditional stockpiling methods not only occupy land but also cause environmental pollution. In recent years, the resource utilization of steel slag has become a research hotspot, with crushing it and using it as building aggregate being one of the most important utilization methods.

[0003] However, steel slag contains unstable components such as free calcium oxide and magnesium oxide, and has high hardness and strong abrasiveness, which leads to severe wear and low processing efficiency of existing crushing equipment. In order to solve the above problems, a steel slag aggregate pretreatment device is proposed. Utility Model Content

[0004] The purpose of this application is to provide a steel slag aggregate pretreatment device that uses a combined crushing method to reduce the wear rate and solve the problems in the background technology.

[0005] The steel slag aggregate pretreatment device provided in this application adopts the following technical solution: A steel slag aggregate pretreatment device includes a combined crushing component, a first conveying component, a screening component, and a second conveying component. The combined crushing component includes a crushing box and a crushing chamber fixedly connected to the upper surface of the crushing box. An S-shaped crushing channel is opened inside the crushing chamber. A rotatable first impact breaker and a second impact breaker are installed on the inner wall of the S-shaped crushing channel. A first impact plate, a second impact plate, a third impact plate, and a fourth impact plate are installed on the inner wall of the S-shaped crushing channel from top to bottom. A first servo motor and a second servo motor are installed on the outer surface of the crushing chamber. A transfer bucket is connected to the bottom of the S-shaped crushing channel. The bottom of the transfer bucket is connected to the inner top of the crushing box.

[0006] The bottom wall of the crushing box is fixedly connected to a bottom column. A cavity is opened at the bottom end of the crushing box, and the top end of the cavity extends into the interior of the bottom column. A third servo motor is fixedly connected to the inner top wall of the cavity. A receiving plate is fixedly connected to the output end of the third servo motor. A uniformly distributed arc-shaped guide plate is fixedly connected to the upper surface of the receiving plate. A uniformly distributed metal striking block is provided on the outside of the arc-shaped guide plate. Multiple metal striking blocks are fixedly connected to the inner wall of the crushing box. A uniformly distributed material discharge port is opened at the bottom end of the crushing box.

[0007] By adopting the above technical solution, the combined crushing component uses a superimposed structure of crushing and breaking boxes, combined with an S-shaped crushing channel. During the fall, the steel slag passes through the first and second impact breaker hammers and the first, second, third, and fourth impact plates for impact crushing, forming a composite crushing path of "multiple impacts + reversal crushing". The steel slag after impact crushing falls into the crushing box for stone-on-stone crushing. After entering the crushing box, the steel slag falls onto the rotating receiving plate and the arc-shaped guide plate. Through the centrifugal force generated by the rotation, the steel slag can be thrown onto the surrounding metal impact blocks to achieve a further crushing effect. This can effectively improve the crushing efficiency while reducing the wear of individual components by dispersing the crushing force.

[0008] Preferably, the output shaft end of the first servo motor is fixedly connected to the rotating shaft end of the first impact breaker, and the output shaft end of the second servo motor is fixedly connected to the rotating shaft end of the second impact breaker.

[0009] By adopting the above technical solution, the first servo motor and the second servo motor drive the first impact breaker and the second impact breaker to rotate independently, respectively. The rotation speed can be adjusted in real time according to the hardness of the steel slag, which can not only ensure the crushing effect of high hardness steel slag, but also reduce excessive wear through rotation speed control.

[0010] Preferably, the first and second impact breakers are staggered inside the S-shaped crushing channel, the first and second impact plates are adapted to the first impact breaker, and the third and fourth impact plates are adapted to the second impact breaker.

[0011] By adopting the above technical solution, the first impact breaker and the second impact breaker are staggered in the S-shaped crushing channel, and the first impact plate, the second impact plate, the third impact plate and the fourth impact plate are set according to the crushing path gradient, so that the steel slag forms an irregular movement trajectory during the crushing process, avoiding the material from impacting the components in a single direction, thereby balancing the wear area and extending the overall service life of the combined crushing components.

[0012] Preferably, the top of the S-shaped crushing channel is connected to a feeding pipe, which is fixedly connected to the top of the crushing box.

[0013] By adopting the above technical solution, the feeding pipe is connected to the top of the S-shaped crushing channel. Its inclination angle and pipe diameter are optimized to guide the steel slag into the crushing area evenly, avoid uneven load impact during feeding, and ensure the stability of the crushing process.

[0014] Preferably, the upper surface of the crushing box is fixedly connected to two reinforcing ribs, and the top ends of the two reinforcing ribs are fixedly connected to the outer surface of the crushing box.

[0015] By adopting the above technical solution, the crushing box and the crushing box are reinforced with reinforcing ribs, which enhances the overall structural strength of the combined crushing components, effectively resists the high-frequency vibration generated during steel slag crushing, prevents the equipment from deforming due to long-term stress, and improves the durability and reliability of the device.

[0016] Preferably, the output end of the transfer bucket is located directly above the receiving plate, the bottom surface of the receiving plate is rotatably connected to the upper surface of the bottom column, and four support piles are fixedly connected to the outer surface of the crushing box.

[0017] By adopting the above technical solution, the transfer bucket accurately guides the crushed steel slag to the receiving plate, which is driven to rotate by a third servo motor. Together with the arc-shaped guide plate and the metal impact block, it forms a composite function of dispersion and crushing. It can further crush particles that do not meet the particle size requirements, and can also preliminarily screen fine powder through centrifugal force, thus optimizing the processing efficiency of subsequent screening processes.

[0018] Preferably, the first conveying component is located below the crushing box, and the discharge port is adapted to the first conveying component. The screening component includes a screening basket installed on one side of the first conveying component, and the output end of the first conveying component is adapted to the inlet of the screening basket.

[0019] By adopting the above technical solution, the first conveying component receives the material output from the bottom discharge port of the crushing box and accurately conveys it to the screening basket. The height difference and angle between the conveying path and the screening inlet are optimized to reduce the scattering and accumulation of materials during the conveying process, and ensure the continuity of the screening process and the material throughput.

[0020] Preferably, the bottom surface of the screening basket is fixedly connected with a plurality of positioning posts for locking the screening basket, and the bottom surface of the screening basket is fixedly connected with two vibrating motors, and the second conveying assembly is installed directly below the screening basket.

[0021] By adopting the above technical solution, a vibrating motor is installed at the bottom of the screening basket. The vibration causes the steel slag to jump during the screening process, which effectively prevents the screen from clogging and realizes the grading of materials, significantly improving the uniformity of aggregate particle size.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] This steel slag aggregate pretreatment device utilizes a superimposed structure of the crushing and breaking boxes within the combined crushing assembly, along with an S-shaped crushing channel design. During its descent, the steel slag undergoes sequential impact crushing via a first impact breaker, a second impact breaker, and first, second, third, and fourth impact plates, forming a composite path of "multiple impacts + reversible crushing." After the crushed steel slag falls into the crushing box, a third servo motor drives the receiving plate to rotate, which, in conjunction with an arc-shaped guide plate, flings the slag against the metal impact blocks, achieving "stone-on-stone" crushing and dispersing the crushing force to reduce wear on individual components. The first and second servo motors can independently adjust the breaker speed to accommodate steel slag of varying hardness. A vibrating motor in the screening assembly drives the screening basket to vibrate, preventing clogging and improving aggregate particle size uniformity. Compared to existing technologies, this device significantly reduces equipment wear, increases crushing efficiency, and improves aggregate qualification rate. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the overall structure of this application from below;

[0026] Figure 3 This is a schematic diagram of the first partial sectional planar structure of this application;

[0027] Figure 4 This is a partial sectional top view structural diagram of this application;

[0028] Figure 5 This is a schematic diagram of the second partial sectional planar structure of this application.

[0029] In the picture:

[0030] 1. Combined crushing assembly; 101. Crushing box; 102. Crushing chamber; 103. S-shaped crushing channel; 104. First impact breaker; 105. First impact plate; 106. Second impact plate; 107. First servo motor; 108. Second impact breaker; 109. Third impact plate; 110. Fourth impact plate; 111. Second servo motor; 112. Feeding pipe; 113. Reinforcing rib; 114. Transfer bucket; 115. Bottom column; 116. Cavity; 117. Third servo motor; 118. Receiving plate; 119. Arc-shaped guide plate; 120. Metal impact block; 121. Discharge port; 122. Support pile; 2. First conveying assembly; 3. Screening assembly; 301. Screening basket; 302. Positioning column; 303. Vibrating motor; 4. Second conveying assembly. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0032] Example 1: A steel slag aggregate pretreatment device, referring to Figure 1 , Figure 2 and Figure 3 This invention includes a steel slag aggregate pretreatment device, comprising a combined crushing assembly 1, a first conveying assembly 2, a screening assembly 3, and a second conveying assembly 4. The combined crushing assembly 1 includes a crushing box 101 and a crushing box 102 fixedly connected to the upper surface of the crushing box 101. An S-shaped crushing channel 103 is provided inside the crushing box 102. A rotatable first impact breaker 104 and a second impact breaker 108 are installed on the inner wall of the S-shaped crushing channel 103. From top to bottom, a first impact plate 105, a second impact plate 106, a third impact plate 109, and a fourth impact plate 110 are sequentially installed on the inner wall of the S-shaped crushing channel 103. A first servo motor 107 and a second servo motor 111 are installed on the outer surface of the crushing box 102. The output shaft of the first servo motor 107 is fixedly connected to the rotating shaft of the first impact breaker 104, and the output shaft of the second servo motor 111 is fixedly connected to the rotating shaft of the second impact breaker 108. The first servo motor 107 and the second servo motor 111 are connected to each other. The first impact breaker 104 and the second impact breaker 108 are driven to rotate independently, and the rotation speed can be adjusted in real time according to the hardness of the steel slag. This ensures the crushing effect on high-hardness steel slag and reduces excessive wear through rotation speed control. The first impact breaker 104 and the second impact breaker 108 are staggered inside the S-shaped crushing channel 103. The first impact plate 105 and the second impact plate 106 are adapted to the first impact breaker 104, and the third impact plate 109 and the fourth impact plate 110 are adapted to the second impact breaker 108. The first impact breaker 104 and the second impact breaker 108 are staggered in the S-shaped crushing channel 103, and the first impact plate 105, the second impact plate 106, the third impact plate 109 and the fourth impact plate 110 are set according to the crushing path gradient, so that the steel slag forms an irregular movement trajectory during the crushing process, avoiding the material from impacting the components in a single direction, thereby balancing the wear area and extending the overall service life of the combined crushing assembly 1.

[0033] Reference Figure 1 , Figure 2 and Figure 3The bottom end of the S-shaped crushing channel 103 is connected to a transfer bucket 114, and the bottom end of the transfer bucket 114 is connected to the inner top of the crushing box 101. The top end of the S-shaped crushing channel 103 is connected to a feeding pipe 112, which is fixedly connected to the top of the crushing box 102. The feeding pipe 112 is connected to the top end of the S-shaped crushing channel 103. Its inclination angle and pipe diameter are optimized to guide the steel slag into the crushing area evenly, avoid the impact of uneven load during feeding, and ensure the stability of the crushing process. Two reinforcing ribs 113 are fixedly connected to the upper surface of the crushing box 101. The top ends of the two reinforcing ribs 113 are fixedly connected to the outer surface of the crushing box 102. The crushing box 101 and the crushing box 102 are reinforced by the reinforcing ribs 113, which enhances the overall structural strength of the combined crushing component 1, effectively resists the high-frequency vibration generated during steel slag crushing, prevents the equipment from deforming due to long-term stress, and improves the durability and reliability of the device.

[0034] Example 2: A steel slag aggregate pretreatment device, referring to Figure 3 , Figure 4 and Figure 5 Based on the same concept as Embodiment 1 above, this embodiment proposes that a bottom column 115 is fixedly connected to the inner bottom wall of the crushing box 101, a cavity 116 is opened at the bottom end of the crushing box 101, the top end of the cavity 116 extends into the interior of the bottom column 115, a third servo motor 117 is fixedly connected to the inner top wall of the cavity 116, a receiving plate 118 is fixedly connected to the output end of the third servo motor 117, a uniformly distributed arc-shaped guide plate 119 is fixedly connected to the upper surface of the receiving plate 118, and uniformly distributed metal striking blocks 120 are provided on the outside of the arc-shaped guide plate 119. Multiple metal striking blocks 120 are fixedly connected to the inner wall of the crushing box 101 for crushing. The bottom of the box 101 is provided with evenly distributed discharge ports 121. The output end of the transfer bucket 114 is located directly above the receiving plate 118. The bottom surface of the receiving plate 118 is rotatably connected to the upper surface of the bottom column 115. Four support piles 122 are fixedly connected to the outer surface of the crushing box 101. The transfer bucket 114 accurately guides the crushed steel slag to the receiving plate 118. The receiving plate 118 is driven to rotate by the third servo motor 117. Together with the arc-shaped guide plate 119 and the metal impact block 120, it forms a composite function of dispersed crushing. It can further crush particles that do not meet the particle size requirements, and can also preliminarily screen fine powder through centrifugal force, thus optimizing the processing efficiency of subsequent screening processes.

[0035] Reference Figure 1 , Figure 2 and Figure 5The first conveying component 2 is located below the crushing box 101, and the discharge port 121 is adapted to the first conveying component 2. The screening component 3 includes a screening basket 301 installed on one side of the first conveying component 2. The output end of the first conveying component 2 is adapted to the inlet of the screening basket 301. The first conveying component 2 receives the material output from the discharge port 121 at the bottom of the crushing box 101 and accurately conveys it to the screening basket 301. The height difference and angle between the conveying path and the screening inlet are optimized to reduce material spillage during the conveying process. In order to ensure the continuity of the screening process and the material throughput, the bottom surface of the screening basket 301 is fixedly connected with multiple positioning columns 302 for locking the screening basket 301. The bottom surface of the screening basket 301 is also fixedly connected with two vibration motors 303. The second conveying component 4 is installed directly below the screening basket 301. The vibration motors 303 are installed at the bottom of the screening basket 301. Through vibration, the steel slag will jump during the screening process, which effectively prevents the screen from clogging and realizes the grading of materials, significantly improving the uniformity of aggregate particle size.

[0036] The implementation principle of this application embodiment is as follows: Steel slag enters the S-shaped crushing channel 103 inside the crushing box 102 through the feeding pipe 112. The first servo motor 107 and the second servo motor 111 drive the first impact crusher 104 and the second impact crusher 108 to rotate, so that the steel slag undergoes multiple impact crushing with the first impact plate 105, the second impact plate 106, the third impact plate 109 and the fourth impact plate 110 in sequence during the falling process, forming a "reverse crushing" path. The crushed material falls into the crushing box 101 through the transfer bucket 114. The third servo motor 117 drives the receiving plate 118 to rotate. Under the action of the arc-shaped guide plate 119, the steel slag is thrown towards the metal impact block 120 fixed on the inner wall of the crushing box 101, and is crushed again through the "stone-on-stone" principle. Particles that do not meet the particle size requirements continue to be crushed by impact under the action of centrifugal force, and then are discharged through the discharge port 121. Subsequently, the first conveying component 2 conveys the material to the screening basket 301. The vibrating motor 303 drives the screening basket 301 to vibrate, causing the steel slag to jump. The particle size is classified through the screen. Qualified aggregate is output by the second conveying component 4 to the next processing step. Material larger than the aperture of the screening basket 301 can be taken out and then returned to the crushing box 102 for further crushing, thereby achieving efficient pretreatment of steel slag.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel slag aggregate pretreatment device, comprising a combined crushing assembly (1), a first conveying assembly (2), a screening assembly (3) and a second conveying assembly (4), characterized in that: The combined crushing assembly (1) includes a crushing box (101) and a crushing box (102) fixedly connected to the upper surface of the crushing box (101). The crushing box (102) has an S-shaped crushing channel (103) inside. The inner wall of the S-shaped crushing channel (103) is equipped with a rotatable first impact breaker (104) and a second impact breaker (108). The inner wall of the S-shaped crushing channel (103) is equipped with a first impact plate (105), a second impact plate (106), a third impact plate (109), and a fourth impact plate (110) from top to bottom. The outer surface of the crushing box (102) is equipped with a first servo motor (107) and a second servo motor (111). The bottom end of the S-shaped crushing channel (103) is connected to a transfer bucket (114). The bottom end of the transfer bucket (114) is connected to the inner top of the crushing box (101). The bottom wall of the crushing box (101) is fixedly connected to a bottom column (115). A cavity (116) is opened at the bottom end of the crushing box (101). The top end of the cavity (116) extends into the interior of the bottom column (115). A third servo motor (117) is fixedly connected to the inner top wall of the cavity (116). A receiving plate (118) is fixedly connected to the output end of the third servo motor (117). A uniformly distributed arc-shaped guide plate (119) is fixedly connected to the upper surface of the receiving plate (118). A uniformly distributed metal striking block (120) is provided on the outside of the arc-shaped guide plate (119). Multiple metal striking blocks (120) are fixedly connected to the inner wall of the crushing box (101). A uniformly distributed material discharge port (121) is opened at the bottom end of the crushing box (101).

2. The steel slag aggregate pretreatment device according to claim 1, characterized in that: The output shaft end of the first servo motor (107) is fixedly connected to the rotating shaft end of the first impact breaker (104), and the output shaft end of the second servo motor (111) is fixedly connected to the rotating shaft end of the second impact breaker (108).

3. The steel slag aggregate pretreatment device according to claim 1, characterized in that: The first impact breaker (104) and the second impact breaker (108) are staggered inside the S-shaped crushing channel (103). The first impact plate (105) and the second impact plate (106) are both adapted to the first impact breaker (104). The third impact plate (109) and the fourth impact plate (110) are both adapted to the second impact breaker (108).

4. The steel slag aggregate pretreatment device according to claim 1, characterized in that: The top of the S-shaped crushing channel (103) is connected to a feeding pipe (112), which is fixedly connected to the top of the crushing box (102).

5. The steel slag aggregate pretreatment device according to claim 1, characterized in that: The upper surface of the crushing box (101) is fixedly connected with two reinforcing ribs (113), and the top ends of the two reinforcing ribs (113) are fixedly connected to the outer surface of the crushing box (102).

6. The steel slag aggregate pretreatment device according to claim 1, characterized in that: The output end of the transfer bucket (114) is located directly above the receiving plate (118). The bottom surface of the receiving plate (118) is rotatably connected to the upper surface of the bottom column (115). Four support piles (122) are fixedly connected to the outer surface of the crushing box (101).

7. The steel slag aggregate pretreatment device according to claim 1, characterized in that: The first conveying component (2) is located below the crushing box (101), and the discharge port (121) is adapted to the first conveying component (2). The screening component (3) includes a screening basket (301) installed on one side of the first conveying component (2), and the output end of the first conveying component (2) is adapted to the inlet of the screening basket (301).

8. A steel slag aggregate pretreatment device according to claim 7, characterized in that: The bottom surface of the screening basket (301) is fixedly connected with a plurality of positioning posts (302) for locking the screening basket (301), and the bottom surface of the screening basket (301) is fixedly connected with two vibration motors (303). The second conveying assembly (4) is installed directly below the screening basket (301).

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