Automatic concrete batching and mixing machine based on metallurgical solid waste recovery and utilization

Abstract

The invention discloses an automatic concrete batching and mixing machine based on metallurgical solid waste recovery and utilization, and relates to the technical field of concrete mixing, the automatic concrete batching and mixing machine comprises a device shell, a mixing device and a storage device, and a quantitative discharging structure is arranged on the outer wall of the middle of the device shell. According to the automatic concrete batching and mixing machine, efficient utilization of metallurgical solid waste is achieved through cooperation of multiple structures, the quantitative discharging structure drives a gear rack through a servo motor, a linkage swing frame and a leakage-proof plate precisely control opening and closing of a discharging opening, a weight detector feeds back in real time to achieve precise metering of materials, and three independent devices support multi-material layered feeding; a magnetic separation powder structure drives an upper sliding frame and a lower sliding frame to slide through a cam connecting rod, a permanent magnet is used for adsorbing metal particles, a synchronous wheel drives a swing block to disturb materials to enhance the separation effect, and an automatic cleaning scraping strip is matched to achieve metal recovery and non-metal waste discharging; the resource utilization rate of the metallurgical solid waste is obviously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete mixing, and particularly relates to an automatic concrete batching and mixing machine based on the recycling and utilization of metallurgical solid waste. Background Art

[0002] The existing automatic concrete batching and mixing machine is the core equipment for concrete production integrating automation and intelligence. It is mainly used to achieve accurate metering, efficient mixing and process control of concrete raw materials. Its core consists of batching, conveying, mixing and control systems: The batching system includes multiple storage bins, and accurately weighs raw materials such as cement, sand and gravel, water, and admixtures according to the preset mix ratio through devices such as electronic scales; the conveying system uses belt conveyors, screw conveyors, etc. to orderly convey the materials to the mixing main engine; the mixing system mostly adopts a forced mixer, and makes the materials evenly mixed by the rotation of high-speed blades; the control system takes PLC or industrial computer as the core, can input formulas, monitor processes and record data, and has a fault alarm function. The advantage of this equipment is to get rid of manual intervention and ensure the stable quality of concrete through a standardized process. For example, it can accurately control the water-cement ratio and aggregate gradation, reduce the strength fluctuation caused by human error. At the same time, it can store multiple mix ratios, flexibly switch to produce different grades of concrete such as C25 and C50, and adapt to the needs of multiple scenarios such as buildings, roads, and bridges. In addition, some equipment also integrates environmental protection designs, such as dust collection and wastewater recycling systems, to reduce production pollution.

[0003] When the existing automatic concrete batching and mixing machine produces multi-component concrete containing metallurgical solid waste, fibers, admixtures, etc., it is easy to cause chaotic feeding order and material interference. For example, when steel fibers and sand and gravel, slag powder, etc. are fed at the same time, due to the irregular shape of steel fibers and large surface friction coefficient, they are extremely easy to entangle into groups with each other. In addition, different materials will cause out-of-sync feeding when sharing a conveying pipeline - fine powders such as slag powder have high fluidity, while the recycled aggregate particles of metallurgical solid waste are rough and have a lag in flow, which may cause an imbalance in the ratio of cementitious materials to aggregates, resulting in a mixing ratio deviation of "excessive cement and lagging admixtures", directly affecting the setting time and strength development of concrete. These problems not only reduce the production efficiency of the equipment, but also may cause fluctuations in concrete performance due to out-of-control mixing ratios, increasing the risk of project quality and bringing certain adverse effects to the use process. In order to solve the deficiencies of the existing technology, we propose an automatic concrete batching and mixing machine based on the recycling and utilization of metallurgical solid waste. Summary of the Invention

[0004] The main purpose of the present invention is to provide an automatic concrete batching and mixing machine based on the recycling and utilization of metallurgical solid waste, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste, comprising a device housing, a mixing device, and a storage device. A quantitative feeding structure is provided on the outer wall of the middle part of the device housing, and a magnetic separation powder structure is provided on the upper side of the device housing; The quantitative feeding structure includes multiple groups of fixing frames fixedly installed on one side of the device housing. A first chute is opened inside each group of fixing frames. A first slider is slidably installed in each first chute. An aggregate kettle and a limiting frame are respectively rotatably installed in the middle of adjacent first sliders. A second chute is opened on the outer wall of the aggregate kettle. A second slider is slidably installed in the second chute. A first sliding rod is rotatably installed at the lower part of the second slider. Linkage frames are respectively rotatably installed on both sides of the lower part of the limiting frame. A return spring is detachably installed at the hinge joint in the middle of the linkage frame and the lower side of the limiting frame. Two weight detectors are fixedly installed on the upper side of the limiting frame.

[0006] Preferably, a first servo motor is fixedly installed inside one side of the fixing frame. A first gear is detachably installed at the rotor of the first servo motor. A second sliding rod is slidably installed on one side of the fixing frame close to the first servo motor. Auxiliary sleeve rods are rotatably installed on both sides of the second sliding rod. One end of the auxiliary sleeve rod away from the second sliding rod is rotatably connected to the outer wall of the aggregate kettle. A rack is provided on one side of the second sliding rod close to the first gear. A swing frame is rotatably installed at the upper part of the second sliding rod. An activity groove is opened on one side of the device housing close to the swing frame. A leak-proof plate is rotatably installed at one end of the swing frame away from the second sliding rod.

[0007] Preferably, the middle part of the swing frame rotates in the activity groove. The top of the weight detector is in contact with the outer wall of the aggregate kettle. The linkage frame is formed by hinging multiple long rods. The rack and the first gear mesh with each other. The fixing frame, the first chute, the first slider, the aggregate kettle, the second chute, the second slider, the first sliding rod, the limiting frame, the linkage frame, the return spring, the first servo motor, the first gear, the second sliding rod, the auxiliary sleeve rod, the weight detector, the rack, the activity groove, the swing frame, and the leak-proof plate are set as a group, and there are three groups in total.

[0008] Preferably, the magnetic separation powder structure includes two groups of third chutes opened on the upper side of the device housing. A third slider and a fourth slider are respectively and slidably installed in the two groups of third chutes. Buffer springs are arranged on both sides of the third slider and the fourth slider. A second servo motor is fixedly installed on one side of the fourth slider. A first cam is detachably installed at the rotor of the second servo motor. One end of the first cam is rotatably installed with a connecting rod. The end of the connecting rod far from the first cam is rotatably connected to the outer wall of the third slider. A lower slide is fixedly installed on one side outer wall of the fourth slider. A waste opening is opened on the lower side of the lower slide. An upper slide is slidably installed on one side of the device housing close to the lower slide. A partition plate is fixedly installed on the lower side of the upper slide.

[0009] Preferably, a fourth servo motor is fixedly installed on the upper part of one side of the upper slide. A threaded rod is detachably installed at the rotor of the fourth servo motor. A cleaning scraper is threadedly connected to the outer wall of the threaded rod. A sliding rod is slidably installed at the end of the cleaning scraper far from the threaded rod. A third servo motor is fixedly installed in the middle of the upper slide. A first synchronous pulley is detachably installed at the rotor of the third servo motor. The first synchronous pulley is respectively and drivingly installed with a second synchronous pulley and a third synchronous pulley through a transmission belt. Rotating rods are fixedly installed at the axial centers on one side of the first synchronous pulley, the second synchronous pulley and the third synchronous pulley. A plurality of swing blocks are fixedly installed at equal intervals on the outer wall of each group of rotating rods.

[0010] Preferably, the upper slide is fixedly connected to the third slider. The cleaning scraper is in contact with the side of the upper slide close to the lower slide. An arc-shaped chute is arranged in the middle of the lower slide. A permanent magnet is arranged in the middle of the upper slide. The lower slide slides on the upper part of the device housing.

[0011] Preferably, the storage device includes a first chamber, a second chamber and a third chamber opened in the middle of the device housing. A first feed port is opened on the outer wall of the device housing close to the third chamber. A second feed port is opened on the outer wall of the device housing close to the second chamber. A third feed port is opened on the upper side of the first chamber. A fifth servo motor is fixedly installed inside the upper side of the device housing close to the third feed port. A second gear is detachably installed at the rotor of the fifth servo motor. A third gear is meshed and connected to one side of the second gear. A crushing roller is detachably installed at the axial centers on the side of the third gear far from the second gear and the fifth servo motor.

[0012] Preferably, the mixing device includes a sliding plate fixedly installed on the lower side of the device housing. A mixing tank is horizontally placed on the lower side of the device housing. A sixth servo motor is fixedly installed on the upper side of the mixing tank. A mixing rod is detachably installed at the rotor of the sixth servo motor.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, through the mechanical linkage between the swing frame and the anti-leakage plate, precise opening and closing control of the discharge port of the storage device is achieved. Then, the weight detector senses the change in the weight of the material in the aggregate kettle, controls the tilt angle of the aggregate kettle, and thus adjusts the feeding speed to meet the feeding requirements of different materials. And three independent devices are used to support multi-material parallel metering. The feeding sequence is coordinated by the control system to achieve a layered feeding mode of "first filling with aggregate, then wrapping with cementitious materials, and finally dispersing fibers", effectively avoiding the direct impact between fibers and coarse aggregates to form agglomeration, improving the uniformity of the concrete mixture. The entire process requires no manual intervention. Through the coordination of the mechanical structure and intelligent control, the automation and standardization of multi-group batching are realized, significantly shortening the batching cycle, reducing human errors, and providing an efficient and stable metering solution for concrete production, especially suitable for the preparation of green concrete containing complex components such as metallurgical solid waste and fibers.

[0014] 2. In the present invention, through mechanical linkage and permanent magnet adsorption technology, efficient separation of metal and non-metal materials in metallurgical waste is achieved. The permanent magnet sweeps across the feeding area to adsorb metal particles. Then, the third servo motor drives the rotating rod and the swing block through the synchronous pulley set to continuously stir the material flow in real time, prevent agglomeration and enhance the magnetic adsorption effect. During cleaning, the cleaning scraper is driven to scrape the metal on the surface of the permanent magnet onto the partition plate, which is then processed by the crushing roller and stored. The non-metal waste is directly discharged through the arc-shaped chute. This structure integrates dynamic separation and automatic cleaning, significantly improving the resource utilization rate of metallurgical solid waste. And the fourth servo motor drives the cleaning scraper to automatically clean the metal particles adsorbed on the surface of the permanent magnet. This process requires no manual intervention, avoiding the drawback of frequent shutdown cleaning in traditional magnetic separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the internal structural schematic diagram of the device housing of the present invention; Figure 3 is the structural schematic diagram of the first feed inlet of the present invention; Figure 4 is the structural schematic diagram of the fixing frame of the present invention; Figure 5 is the structural schematic diagram of the second chute of the present invention; Figure 6 is the structural sectional schematic diagram of the fixing frame of the present invention; Figure 7 is the structural schematic diagram of the third chamber of the present invention; Figure 8 is the structural schematic diagram of the first chamber of the present invention; Figure 9It is a schematic structural diagram of the movable slot of the present invention; Figure 10 It is a schematic structural diagram of the second servo motor of the present invention; Figure 11 It is a schematic structural diagram of the lower carriage of the present invention; Figure 12 It is a schematic structural diagram of the third servo motor of the present invention; Figure 13 It is a schematic structural diagram of the blanking port of the present invention; Figure 14 It is a schematic structural diagram of the partition plate of the present invention; Figure 15 It is a schematic structural diagram of the cleaning scraping bar of the present invention; Figure 16 It is a schematic structural diagram of the sliding plate of the present invention; Figure 17 It is a schematic structural diagram of the mixing tank of the present invention.

[0016] In the figure: 1, device housing; 2, quantitative blanking structure; 21, fixed frame; 22, first chute; 23, first slider; 24, aggregate kettle; 25, second chute; 26, second slider; 27, first sliding rod; 28, limiting frame; 29, linkage frame; 210, return spring; 211, first servo motor; 212, first gear; 213, second sliding rod; 214, auxiliary sleeve rod; 215, weight detector; 216, rack; 217, movable slot; 218, swing frame; 219, anti-leakage plate; 3, magnetic separation powder structure; 31, third chute; 32, third slider; 33, fourth slider; 34, second servo motor; 35, buffer spring; 36, first cam; 37, connecting rod; 38, lower carriage; 39, upper carriage; 310, third servo motor; 311, first synchronous pulley; 312, second synchronous pulley; 313, third synchronous pulley; 314, rotating rod; 315, swing block; 316, partition plate; 317, fourth servo motor; 318, threaded rod; 319, sliding rod; 320, cleaning scraping bar; 321, waste port; 4, storage device; 41, first chamber; 42, second chamber; 43, third chamber; 44, first feed port; 45, second feed port; 46, third feed port; 47, fifth servo motor; 48, second gear; 49, third gear; 410, crushing roller; 5, mixing device; 51, sliding plate; 52, mixing tank; 53, sixth servo motor; 54, mixing rod. Detailed implementation manners

[0017] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0018] Example 1, as Figures 1-9As shown in the figure, when it is necessary to mix concrete, first start the first servo motor 211. The first gear 212 on its rotor meshes with the rack 216 of the second sliding rod 213, driving the second sliding rod 213 to move horizontally downward. Due to the downward movement of the second sliding rod 213, the swing frame 218 deflects in the movable slot 217. At the same time, the swing frame 218 forms a seesaw motion state. Therefore, when the second sliding rod 213 drives the swing frame 218 to deflect and move downward, it drives the anti-leakage plate 219 to slide upward. When the anti-leakage plate 219 slides to the upper end, the first servo motor 211 stops running, and the discharge port of the storage device 4 opens. At the same time, since the aggregate kettle 24 is aligned with the discharge port of the storage device 4, the ingredients inside the storage device 4 fall into the aggregate kettle 24. When the aggregate kettle 24 is gradually filled with ingredients, due to the weight of the ingredients, the aggregate kettle 24 gradually slides downward. Since the lower end of the aggregate kettle 24 is hinged to one end of the linkage frame 29, it realizes the pulling of the linkage frame 29. When one end of the linkage frame 29 is pressed downward by the weight of the aggregate kettle 24 and swings downward, the other end of the linkage frame 29 drives the limit frame 28 to slide upward in the first chute 22, so that the weight detector 215 contacts the outer wall of the aggregate kettle 24. After the weight detector 215 contacts the outer wall of the aggregate kettle 24, the weight detector 215 monitors the weight of the materials in the aggregate kettle 24. When the preset ratio is reached, a signal is sent to the first servo motor 211, and then the first servo motor 211 is started. The first servo motor 211 drives the second sliding rod 213 to move upward. When the second sliding rod 213 slides upward, it drives the swing frame 218 to deflect in the reverse direction, realizing the blocking of the discharge port of the storage device 4. And when the second sliding rod 213 moves upward, the auxiliary sleeve rod 214 rotatably installed on the outer wall of the aggregate kettle 24 is used to push the aggregate kettle 24 to tilt, pouring the ingredients inside the aggregate kettle 24 onto the sliding plate 51, and then entering the mixing tank 52 through the sliding plate 51. When the materials in the aggregate kettle 24 are poured out, due to the lack of weight inside the aggregate kettle 24, the first servo motor 211 drives the second sliding rod 213 to reset. And when the second sliding rod 213 resets, the thrust of the auxiliary sleeve rod 214 on the aggregate kettle 24 is reduced, making the aggregate kettle 24 return to the upright position. Then, the linkage frame 29 returns to its original position by the pulling of the return spring 210. At the same time, by adjusting the position of the auxiliary sleeve rod 214, the tilting angle of the aggregate kettle 24 is controlled to realize the adjustment of the feeding speed. Different feeding speeds can be set for the three groups of devices respectively, and the feeding sequence is coordinated by the controller to realize the layered feeding of "first aggregate, then cementitious material, and finally fiber". The raw materials after quantitative feeding slide into the mixing tank 52 through the sliding plate 51, and the sixth servo motor 53 drives the stirring rod 54 to rotate at a high speed, fully mixing the metallurgical solid waste, aggregate and additives.

[0019] Example 2, as Figures 9-17As shown, the second servo motor 34 drives the first cam 36 to rotate, and drives the third slider 32 to slide back and forth in the third sliding groove 31 through the connecting rod 37. Since the fourth slider 33 is fixedly connected to the lower frame 38, and the third slider 32 is fixedly connected to the upper slide 39, when the fourth slider 33 and the third slider 32 slide into each other, the lower frame 38 and the upper slide 39 are driven to slide synchronously. At the same time, the third servo motor 310 is started, and the first synchronous wheel 311 is driven to rotate by the third servo motor 310. The first synchronous wheel 311 drives the second synchronous wheel 312 and the third synchronous wheel 313 to deflect synchronously through the transmission belt. Then, when the first synchronous wheel 311, the second synchronous wheel 312 and the third synchronous wheel 313 deflect, the corresponding fixedly connected rotating rod 314 is deflected. When the rotating rod 314 deflects, it drives the swing block 315 to rotate, so that the swing block 315 extends from the outer wall of the upper slide 39. When the swing block 315 extends out of the outer wall of the upper slide 39, the upper slide 3 9 and the lower rack 38 slide against each other to realize the shifting of the metallurgical waste sliding down the chute. When the metal material on the permanent magnet of the upper slide 39 needs to be processed, the swing block 315 is first reset by reversing the third servo motor 310. At the same time, the material in the engaging groove of the swing block 315 can be squeezed out by the swing block 315, and the fourth servo motor 317 can be started to drive the threaded rod 318 to rotate. The rotation of the threaded rod 318 drives the cleaning scraper 320 to scrape the surface of the upper slide 39, and the material on the surface of the upper slide 39 is scraped into the partition plate 316 by the cleaning scraper 320, and then slides onto the crushing roller 410 through the partition plate 316. The crushing roller 410 is driven by the fifth servo motor 47 to process the material. After the processing is completed, it slides into the first chamber 41 through the third feed port 46 for storage, and the waste without metal material slides from the arc chute in the middle of the lower rack 38 and is then discharged from the waste port 321.

[0020] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste, comprising a device housing (1), a mixing device (5), and a storage device (4), characterized in that: In the middle of the outer wall of the device housing (1), a quantitative feeding structure (2) is provided, and a magnetic separation powder structure (3) is provided on the upper side of the device housing (1); The quantitative feeding structure (2) includes a plurality of sets of fixing frames (21) fixedly installed on one side of the device housing (1). A first sliding groove (22) is formed inside each set of fixing frames (21). A first slider (23) is slidably installed in each first sliding groove (22). An aggregate kettle (24) and a limiting frame (28) are respectively rotatably installed in the middle of adjacent sets of first sliders (23). A second sliding groove (25) is formed on the outer wall of the aggregate kettle (24). A second slider (26) is slidably installed in the second sliding groove (25). A first sliding rod (27) is rotatably installed at the lower part of the second slider (26). Linkage frames (29) are respectively rotatably installed on both sides of the lower part of the limiting frame (28). A return spring (210) is detachably installed at the middle hinge of the linkage frame (29) and the lower side of the limiting frame (28). Two weight detectors (215) are fixedly installed on the upper side of the limiting frame (28).

2. The automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 1, characterized in that: A first servo motor (211) is fixedly installed inside one side of the fixing frame (21). A first gear (212) is detachably installed at the rotor of the first servo motor (211). A second sliding rod (213) is slidably installed on one side of the fixing frame (21) close to the first servo motor (211). Auxiliary sleeve rods (214) are rotatably installed on both sides of the second sliding rod (213). One end of the auxiliary sleeve rod (214) far from the second sliding rod (213) is rotatably connected to the outer wall of the aggregate kettle (24). A rack (216) is arranged on one side of the second sliding rod (213) close to the first gear (212). A swing frame (218) is rotatably installed at the upper part of the second sliding rod (213). An activity groove (217) is formed on one side of the device housing (1) close to the swing frame (218). A leak-proof plate (219) is rotatably installed at one end of the swing frame (218) far from the second sliding rod (213).

3. An automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 2, characterized in that: The middle of the swing frame (218) rotates in the activity groove (217). The top of the weight detector (215) contacts the outer wall of the aggregate kettle (24). The linkage frame (29) is formed by hinging a plurality of long rods. The rack (216) and the first gear (212) mesh with each other. The fixing frame (21), the first sliding groove (22), the first slider (23), the aggregate kettle (24), the second sliding groove (25), the second slider (26), the first sliding rod (27), the limiting frame (28), the linkage frame (29), the return spring (210), the first servo motor (211), the first gear (212), the second sliding rod (213), the auxiliary sleeve rod (214), the weight detector (215), the rack (216), the activity groove (217), the swing frame (218), and the leak-proof plate (219) are set as a group, and a total of three groups are provided.

4. An automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 1, characterized in that: The magnetic separation powder structure (3) includes two groups of third chutes (31) opened on the upper side of the device housing (1). A third slider (32) and a fourth slider (33) are respectively and slidably installed in the two groups of third chutes (31). Buffer springs (35) are arranged on both sides of the third slider (32) and the fourth slider (33). A second servo motor (34) is fixedly installed on one side of the fourth slider (33). A first cam (36) is detachably installed at the rotor of the second servo motor (34). One end of the first cam (36) is rotatably installed with a connecting rod (37). The end of the connecting rod (37) far from the first cam (36) is rotatably connected to the outer wall of the third slider (32). A lower carriage (38) is fixedly installed on one side outer wall of the fourth slider (33). A waste outlet (321) is opened on the lower side of the lower carriage (38). An upper carriage (39) is slidably installed on one side of the device housing (1) close to the lower carriage (38). A partition plate (316) is fixedly installed on the lower side of the upper carriage (39).

5. The automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 4, wherein: A fourth servo motor (317) is fixedly installed on the upper part of one side of the upper carriage (39). A threaded rod (318) is detachably installed at the rotor of the fourth servo motor (317). A cleaning scraper bar (320) is threadedly connected to the outer wall of the threaded rod (318). A slide bar (319) is slidably installed at the end of the cleaning scraper bar (320) far from the threaded rod (318). A third servo motor (310) is fixedly installed in the middle of the upper carriage (39). A first synchronous pulley (311) is detachably installed at the rotor of the third servo motor (310). The first synchronous pulley (311) is respectively and drivingly installed with a second synchronous pulley (312) and a third synchronous pulley (313) through a transmission belt. Rotating rods (314) are fixedly installed at the axial centers on one side of the first synchronous pulley (311), the second synchronous pulley (312), and the third synchronous pulley (313). A number of swing blocks (315) are fixedly installed at equal intervals on the outer walls of each group of rotating rods (314).

6. The automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 5, characterized in that: The upper carriage (39) is fixedly connected to the third slider (32). The cleaning scraper bar (320) is in contact with the side of the upper carriage (39) close to the lower carriage (38). An arc-shaped chute is arranged in the middle of the lower carriage (38). A permanent magnet is arranged in the middle of the upper carriage (39). The lower carriage (38) slides on the upper part of the device housing (1).

7. An automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 1, characterized in that: The storage device (4) includes a first chamber (41), a second chamber (42), and a third chamber (43) which are opened in the middle of the device housing (1); a first feed port (44) is opened on the outer wall of the device housing (1) on the side close to the third chamber (43); a second feed port (45) is opened on the outer wall of the device housing (1) on the side close to the second chamber (42); a third feed port (46) is opened on the upper side of the first chamber (41); a fifth servo motor (47) is fixedly installed inside the upper side of the device housing (1) close to the third feed port (46); a second gear (48) is detachably installed on the rotor of the fifth servo motor (47); a third gear (49) is meshedly connected to one side of the second gear (48); a crushing roller (410) is detachably installed on the axis of the third gear (49) and the second gear (48) away from the fifth servo motor (47).

8. An automatic batching and mixing machine for concrete based on the recycling and utilization of metallurgical solid waste according to claim 1, characterized in that: The mixing device (5) comprises a sliding plate (51) fixedly mounted on the lower side of the device housing (1); a stirring box (52) is horizontally placed on the lower side of the device housing (1); a sixth servo motor (53) is fixedly mounted on the upper side of the stirring box (52); and a stirring rod (54) is detachably mounted on the rotor of the sixth servo motor (53).

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