Steel slag multistage collaborative crushing device based on hydraulic regulation

Abstract

The utility model discloses a kind of steel slag multistage collaborative crushing device based on hydraulic regulation and control, belong to steel slag crushing technical field, its technical scheme main points include first crusher frame, the bottom of the first crusher frame is fixedly connected with second crusher frame, the inside of the first crusher frame is provided with double hydraulic crushing assembly, the inside of the second crusher frame is provided with hydraulic grinding assembly, the double hydraulic crushing assembly includes servo hydraulic cylinder fixedly connected in the inside of first crusher frame, the output end of the servo hydraulic cylinder is fixedly connected with connecting plate, can solve the current steel slag multistage collaborative crushing device usually lack accurate driving force control structure, inconvenient according to steel slag hardness real-time balanced distribution crushing force, so as to easily appear lining abnormal wear, affect crushing efficiency stability, and when carrying out secondary crushing, inconvenient dynamic adaptation steel slag granularity completed by primary crushing, affect its crushing precision problem.

Description

Technical Field

[0001] This utility model relates to the field of steel slag crushing technology, and in particular to a multi-stage coordinated crushing device for steel slag based on hydraulic control. Background Technology

[0002] With the rapid development of the steel industry, the output of steel slag is also increasing. my country is a major steel producer with an annual steel output of nearly 700 million tons and a steel slag output of about 90 million tons. Steel slag contains 7%-15% recyclable steel, and some components can be used in industries such as cement and building materials. It has high recycling value. Effective treatment and comprehensive utilization of steel slag can not only realize the recycling and reuse of resources, but also reduce environmental pollution and generate huge economic and social benefits.

[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing multi-stage co-processing crushing devices for steel slag typically lack an accurate drive force control structure, making it difficult to distribute the crushing force evenly in real time according to the hardness of the steel slag. This can easily lead to abnormal wear of the liner plates, affecting the stability of crushing efficiency. Furthermore, during secondary crushing, it is not easy to dynamically adapt to the particle size of the steel slag after primary crushing, thus affecting the crushing accuracy.

[0004] To address this, a multi-stage synergistic crushing device for steel slag based on hydraulic control is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage co-crushing device for steel slag based on hydraulic control. This device can solve the problems that existing multi-stage co-crushing devices for steel slag usually lack an accurate driving force control structure, making it difficult to distribute the crushing force evenly in real time according to the hardness of the steel slag. This can easily lead to abnormal wear of the liner, affecting the stability of crushing efficiency. Moreover, during secondary crushing, it is not easy to dynamically adapt to the particle size of the steel slag after primary crushing, affecting the crushing accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage synergistic crushing device for steel slag based on hydraulic control, comprising a first crushing frame, a second crushing frame fixedly connected to the bottom of the first crushing frame, a dual hydraulic crushing assembly inside the first crushing frame, and a hydraulic grinding assembly inside the second crushing frame.

[0007] The dual hydraulic crushing assembly includes a servo hydraulic cylinder fixedly connected inside the first crusher frame. A connecting plate is fixedly connected to the output end of the servo hydraulic cylinder. A movable jaw plate is fixedly connected to the outer side of the connecting plate. The movable jaw plate is slidably connected to the first crusher frame. A limit rod is fixedly connected to the rear side of the connecting plate. An overload protection spring is provided on the outer side of the limit rod. A buffer support is fixedly connected inside the first crusher frame. A fixed jaw plate is fixedly connected to the outer side of the buffer support. The fixed jaw plate is located in front of the movable jaw plate.

[0008] Preferably, the hydraulic grinding assembly includes a hydraulic grinding roller fixedly connected inside the second crusher frame, a driving hydraulic cylinder fixedly connected inside the second crusher frame, and a movable guide plate fixedly connected to the output end of the driving hydraulic cylinder, the movable guide plate being located in front of the hydraulic grinding roller.

[0009] Preferably, a limiting connecting rod is fixedly connected inside the second crusher frame, and the limiting connecting rod is fixedly connected to the moving guide plate.

[0010] Preferably, a protective box is fixedly connected to the outside of the second crusher frame, and a drive mechanism is provided inside the protective box. The drive mechanism is fixedly connected to the hydraulic grinding roller.

[0011] Preferably, a feed baffle is fixedly connected to the top of the first crusher frame, and an inclined guide plate is fixedly connected to the inner side of the feed baffle.

[0012] Preferably, a maintenance box is fixedly connected to the rear side of the first crusher frame, and a warning light is provided on the top of the maintenance box.

[0013] Preferably, a limiting groove is fixedly connected inside the second crusher frame, and a limiting slider is fixedly connected inside the limiting groove. The limiting slider is fixedly connected to the moving guide plate.

[0014] Preferably, the bottom of the second crusher frame is fixedly connected to a support leg, and the bottom of the support leg is fixedly connected to a buffer base plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application achieves efficient coarse crushing by setting up a dual hydraulic crushing component to crush large pieces of steel slag to medium particle size. At the same time, the crushing force can be dynamically adjusted according to the hardness of the steel slag through precise control of the hydraulic cylinder, avoiding the impact of load fluctuation on crushing efficiency. Moreover, it can make the crushing force evenly distributed on the steel slag material, avoiding the uneven load problem of traditional single cylinder drive, ensuring balanced force in the crushing chamber, reducing equipment vibration and liner wear caused by uneven force, and improving overall operational stability.

[0017] 2. This application can adjust the distance between the hydraulic grinding roller and the inner wall by setting up a hydraulic grinding component to adapt to different steel slag hardness, feed particle size and finished product particle size requirements, and meet different precision crushing requirements. At the same time, through the synergistic effect of the squeezing, shearing and grinding forces generated by the high-speed rotation of the grinding roller, medium-sized steel slag can be further refined and the metallic iron and slag phase can be effectively separated, thereby improving the efficiency of subsequent processing. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the hydraulically controlled multi-stage synergistic crushing device for steel slag according to this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the dual hydraulic crushing assembly of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the hydraulic grinding assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first crusher frame of this utility model;

[0022] Figure 5 This is a cross-sectional view of the second crusher frame of this utility model.

[0023] In the diagram, 1. First crusher frame; 2. Second crusher frame; 3. Feed baffle; 4. Dual hydraulic crushing assembly; 401. Servo hydraulic cylinder; 402. Connecting plate; 403. Moving jaw plate; 404. Limiting rod; 405. Overload protection spring; 406. Buffer support; 407. Fixed jaw plate; 5. Hydraulic grinding assembly; 501. Hydraulic grinding roller; 502. Drive hydraulic cylinder; 503. Moving guide plate; 504. Limiting connecting rod; 505. Protective box; 506. Drive mechanism; 6. Inclined guide plate; 7. Maintenance box; 8. Warning light; 9. Limiting slide; 10. Limiting slider; 11. Support leg; 12. Buffer base plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A multi-stage synergistic crushing device for steel slag based on hydraulic control includes a first crushing frame 1, a second crushing frame 2 fixedly connected to the bottom of the first crushing frame 1, a dual hydraulic crushing component 4 inside the first crushing frame 1, and a hydraulic grinding component 5 inside the second crushing frame 2.

[0027] The dual hydraulic crushing assembly 4 includes a servo hydraulic cylinder 401 fixedly connected inside the first crusher frame 1. A connecting plate 402 is fixedly connected to the output end of the servo hydraulic cylinder 401. A movable jaw plate 403 is fixedly connected to the outer side of the connecting plate 402. The movable jaw plate 403 is slidably connected to the first crusher frame 1. A limit rod 404 is fixedly connected to the rear side of the connecting plate 402. An overload protection spring 405 is provided on the outer side of the limit rod 404. A buffer support 406 is fixedly connected inside the first crusher frame 1. A fixed jaw plate 407 is fixedly connected to the outer side of the buffer support 406. The fixed jaw plate 407 is located in front of the movable jaw plate 403.

[0028] In this embodiment: by activating the servo hydraulic cylinder 401, the piston of the servo hydraulic cylinder 401 extends, pushing the movable jaw plate 403 towards the fixed jaw plate 407 fixed to the buffer support 406 via the connecting plate 402 at the output end. The two form a crushing chamber that is wider at the top and narrower at the bottom. The steel slag is subjected to gradually increasing compressive force in the gap between the movable jaw plate 403 and the fixed jaw plate 407. When the pressure exceeds the compressive strength of the steel slag, the steel slag fractures and is initially crushed into medium-sized particles. During the sliding process of the movable jaw plate 403, the limiting rod 404 on the rear side of the connecting plate 402 moves backward synchronously. The overload protection spring 405 on the outside of the moving jaw plate 403 is always in a compressed state, forming an elastic buffer structure. When the steel slag is mixed with ultra-hard iron blocks or the feed volume suddenly increases, causing the crushing force to exceed the set threshold, the moving jaw plate 403 drives the limit rod 404 to compress the spring backward, instantly increasing the crushing gap, so that the iron blocks or overloaded materials can be discharged, avoiding damage to the servo hydraulic cylinder 401 due to hard impact. At the same time, the buffer support 406 fixed to the first crusher frame 1 absorbs the impact energy through its own elastic deformation, further reducing the impact force of the moving jaw plate 403 on the frame and protecting the core components of the equipment.

[0029] Specifically, such as Figure 3 As shown, the hydraulic grinding assembly 5 includes a hydraulic grinding roller 501 fixedly connected inside the second crusher frame 2. A driving hydraulic cylinder 502 is fixedly connected inside the second crusher frame 2. A movable guide plate 503 is fixedly connected to the output end of the driving hydraulic cylinder 502. The movable guide plate 503 is located in front of the hydraulic grinding roller 501.

[0030] Specifically, such as Figure 3 As shown, a limiting connecting rod 504 is fixedly connected inside the second crusher frame 2, and the limiting connecting rod 504 is fixedly connected to the moving guide plate 503.

[0031] Specifically, such as Figure 3 As shown, a protective box 505 is fixedly connected to the outside of the second crusher frame 2. A drive mechanism 506 is installed inside the protective box 505. The drive mechanism 506 is fixedly connected to the hydraulic grinding roller 501.

[0032] In this embodiment: the steel slag after coarse crushing falls into the interior of the second crusher frame 2 through the discharge port at the bottom of the first crusher frame 1. First, the drive hydraulic cylinder 502 is triggered, then the piston of the drive hydraulic cylinder 502 extends, pushing the hydraulic grinding roller 501 horizontally via the moving guide plate 503 at the output end. This adjusts the gap between the grinding roller and the inner wall of the grinding chamber to accommodate different particle size crushing requirements. When fine-grained steel slag needs to be produced, the drive hydraulic cylinder 502 pushes the moving guide plate 503 forward, reducing the distance between the grinding roller and the inner wall. If medium-grained steel slag needs to be processed, the gap is increased by adjusting in the opposite direction. During the translation of the moving guide plate 503, the space behind it... The fixed limiting connecting rod 504 moves synchronously to ensure that the moving guide plate 503 moves accurately and avoids uneven grinding gap due to skew. Then, the drive mechanism 506 in the protective box 505 is activated, driving the hydraulic grinding roller 501 to rotate at high speed. After the steel slag enters the grinding chamber, it is first rolled into the gap between the roller surface and the inner wall by the rotating grinding roller and crushed by the squeezing action. At the same time, the teeth or ridges on the surface of the grinding roller form a shearing force with the inner wall liner, further tearing and refining the steel slag particles. For steel slag or metallic iron particles with high hardness, the hydraulic drive system of the grinding roller can increase the pressure in real time and transmit it to the grinding roller through the moving guide plate 503 to ensure that the crushing force is continuously effective.

[0033] Specifically, such as Figure 1 As shown, a feed baffle 3 is fixedly connected to the top of the first crusher frame 1, and an inclined guide plate 6 is fixedly connected to the inner side of the feed baffle 3.

[0034] Specifically, such as Figure 4 As shown, a maintenance box 7 is fixedly connected to the rear side of the first crusher frame 1, and a warning light 8 is installed on the top of the maintenance box 7.

[0035] In this embodiment: by setting up a feed baffle 3 and an inclined guide plate 6, when steel slag is poured into the feed port at the top of the first crusher frame 1, it first contacts the inclined guide plate 6 on the inner side of the feed baffle 3. Under the action of gravity, the steel slag slowly slides down the inclined surface of the inclined guide plate 6, which can make the steel slag fall evenly between the moving jaw plate 403 and the fixed jaw plate 407, ensuring that the crushing chamber is subjected to uniform force and avoiding uneven wear of the equipment due to local overload. By setting up a maintenance box 7 and a warning light 8, after the equipment is stopped, the operator can open the sealed door of the maintenance box 7 to inspect, lubricate or replace key components such as the servo hydraulic cylinder 401, overload protection spring 405, and moving jaw plate 403 inside the dual hydraulic crushing assembly 4. When the equipment is running, the warning light 8 displays the status in real time. When it is green, it indicates normal operation. When it is yellow, it indicates abnormal system pressure and requires warning and adjustment. When it is red, it indicates overload or malfunction. The operator can quickly judge the status of the equipment by color and respond in a timely manner.

[0036] Specifically, such as Figure 5 As shown, the second crusher frame 2 is internally fixedly connected to a limiting groove 9, and the limiting groove 9 is internally fixedly connected to a limiting slider 10, which is fixedly connected to the moving guide plate 503.

[0037] Specifically, such as Figure 1 As shown, the bottom of the second crusher frame 2 is fixedly connected to a support leg 11, and the bottom of the support leg 11 is fixedly connected to a buffer base plate 12.

[0038] In this embodiment: By setting a limiting groove 9 and a limiting slider 10, when the driving hydraulic cylinder 502 pushes the moving guide plate 503 to move forward or backward, the limiting sliders 10 fixed on both sides of the moving guide plate 503 slide synchronously in the limiting groove 9, forming a rigid guiding constraint. When the steel slag is unevenly distributed in the grinding chamber, resulting in a large pressure on one side, the limiting slider 10 can provide reverse support force through the side wall of the groove, avoiding the moving guide plate 503 from tilting or getting stuck, and improving the reliability of the grinding assembly. By setting a support leg 11 and a buffer base plate 12, when the equipment is installed, the buffer base plate 12 at the bottom of the support leg 11 directly contacts the ground. The support leg 11 is a hollow steel structure filled with damping material. The vibration generated during the crushing process is transmitted to the support leg 11 through the frame, and then absorbed and attenuated by the rubber damping layer of the buffer base plate 12 and the damping material inside the support leg 11, avoiding the risk of displacement or overturning caused by vibration.

[0039] Working Principle: In the process of using the multi-stage co-crushing device for steel slag, the steel slag first enters through the feed inlet at the top of the first crusher frame 1, is guided by the inner inclined guide plate 6, and falls evenly into the interior of the dual hydraulic crushing assembly 4. A servo hydraulic cylinder 401 is fixed inside the first crusher frame 1 of the dual hydraulic crushing assembly 4. Its output end is rigidly connected to the moving jaw plate 403 via a connecting plate 402. When the piston of the servo hydraulic cylinder 401 extends, it pushes the connecting plate 402, causing the moving jaw plate 403 to move towards the fixed jaw plate 403 fixed to the buffer support 406. The jaws move in seven directions, forming a crushing chamber that is wider at the top and narrower at the bottom. The steel slag is subjected to compressive force during the relative movement of the moving jaw plate 403 and the fixed jaw plate 407. When its compressive strength exceeds the material's limit, it breaks down, initially crushing large pieces of steel slag to a medium particle size. During this process, the overload protection spring 405, sleeved on the outside of the limit rod 404, remains compressed. When ultra-hard iron blocks are mixed into the steel slag or the instantaneous load is too large, the moving jaw plate 403 drives the limit rod 404 to push the spring back, preventing overload damage to the servo hydraulic cylinder 401. The buffer support 406 absorbs impact energy through elastic deformation, further protecting the core components of the equipment. Then, the coarsely crushed steel slag enters the interior of the second crusher frame 2 through the discharge port at the bottom of the first crusher frame 1. The driving hydraulic cylinder 502 is fixed inside the frame, and its output end is connected to the moving guide plate 503. The guide plate can be pushed back and forth by hydraulic oil, thereby adjusting the distance between the hydraulic grinding roller 501 and the inner wall of the fixed grinding chamber. When the steel slag enters the grinding chamber, the driving mechanism 506 in the protective box 505 drives the hydraulic grinding roller 501 to rotate at high speed, generating a combined force of squeezing, shearing and grinding on the steel slag, further crushing the medium-sized steel slag to the micro powder level. During this process, the driving hydraulic cylinder 502 is started, and then the driving hydraulic cylinder 502 pushes the moving guide plate 503 to slide inside the second crusher frame 2. While moving, the limiting slider 10 on the outside of the moving guide plate 503 slides inside the limiting groove 9 to ensure the straightness and stability of the guide plate during translation, and avoid uneven grinding gap due to skew, which would affect the output particle size.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage synergistic crushing device for steel slag based on hydraulic control, comprising a first crushing frame (1), characterized in that: The bottom of the first crusher frame (1) is fixedly connected to the second crusher frame (2). The first crusher frame (1) is equipped with a double hydraulic crushing assembly (4), and the second crusher frame (2) is equipped with a hydraulic grinding assembly (5). The dual hydraulic crushing assembly (4) includes a servo hydraulic cylinder (401) fixedly connected inside the first crusher frame (1). The output end of the servo hydraulic cylinder (401) is fixedly connected to a connecting plate (402). A movable jaw plate (403) is fixedly connected to the outside of the connecting plate (402). The movable jaw plate (403) is slidably connected to the first crusher frame (1). A limit rod (404) is fixedly connected to the rear side of the connecting plate (402). An overload protection spring (405) is provided on the outside of the limit rod (404). A buffer support (406) is fixedly connected inside the first crusher frame (1). A fixed jaw plate (407) is fixedly connected to the outside of the buffer support (406). The fixed jaw plate (407) is located in front of the movable jaw plate (403).

2. The multi-stage coordinated crushing device for steel slag based on hydraulic control according to claim 1, characterized in that: The hydraulic grinding assembly (5) includes a hydraulic grinding roller (501) fixedly connected inside the second crusher frame (2). A driving hydraulic cylinder (502) is fixedly connected inside the second crusher frame (2). A movable guide plate (503) is fixedly connected to the output end of the driving hydraulic cylinder (502). The movable guide plate (503) is located in front of the hydraulic grinding roller (501).

3. The multi-stage synergistic crushing device for steel slag based on hydraulic control according to claim 2, characterized in that: The second crusher frame (2) is internally fixedly connected to a limiting connecting rod (504), which is fixedly connected to a moving guide plate (503).

4. The multi-stage coordinated crushing device for steel slag based on hydraulic control according to claim 2, characterized in that: A protective box (505) is fixedly connected to the outside of the second crusher frame (2). A drive mechanism (506) is provided inside the protective box (505). The drive mechanism (506) is fixedly connected to the hydraulic grinding roller (501).

5. A multi-stage coordinated crushing device for steel slag based on hydraulic control according to claim 1, characterized in that: The top of the first crusher frame (1) is fixedly connected to a feed baffle (3), and the inner side of the feed baffle (3) is fixedly connected to an inclined guide plate (6).

6. The multi-stage coordinated crushing device for steel slag based on hydraulic control according to claim 1, characterized in that: A maintenance box (7) is fixedly connected to the rear side of the first crusher frame (1), and a warning light (8) is provided on the top of the maintenance box (7).

7. A multi-stage synergistic crushing device for steel slag based on hydraulic control according to claim 3, characterized in that: The second crusher frame (2) is internally fixedly connected to a limiting groove (9), and the limiting groove (9) is internally fixedly connected to a limiting slider (10), which is fixedly connected to a moving guide plate (503).

8. The multi-stage synergistic crushing device for steel slag based on hydraulic control according to claim 1, characterized in that: The bottom of the second crusher frame (2) is fixedly connected to a support leg (11), and the bottom of the support leg (11) is fixedly connected to a buffer base plate (12).

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