Construction waste crushing and separating device

Abstract

The application provides a building waste crushing and separating device, which comprises a base, a crushing mechanism arranged on the base, a feeding mechanism and a dissociation mechanism arranged on the two sides of the crushing mechanism respectively, the feeding mechanism is arranged on one side of a feeding port of the crushing mechanism, and the building waste in a feeding cavity is quantitatively pushed to a receiving bin through a pushing assembly and then pushed to the crushing mechanism through a second discharging mechanism to ensure that the crushing mechanism crushes quantitatively each time; the crushed building waste is pushed to the dissociation mechanism through a first discharging mechanism, and the concrete and the steel are completely separated through the mutual cooperation of an upper track group and a lower track group of the dissociation mechanism. The building waste crushing and separating device realizes the quantitative conveying of the building waste to the crushing mechanism through the feeding mechanism, reduces the overflow of the building waste in the separating mechanism, and thus improves the crushing stability of the crushing mechanism; and the dissociation mechanism improves the separation effect of the concrete and the steel.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, and in particular to a construction waste crushing and separating device. Background Technology

[0002] With the increasing number of building demolition projects and urban renewal projects, the amount of construction waste generated is growing year by year, of which waste reinforced concrete accounts for a large proportion. In order to improve resource utilization and reduce the environmental impact of construction waste, it is usually necessary to crush waste concrete to separate the concrete aggregate from the internal steel reinforcement so that they can be recycled separately.

[0003] Currently, the main methods for processing reinforced concrete include manual demolition and mechanical crushing. Manual demolition relies on manual labor combined with crushing tools to gradually break up the concrete and separate the reinforcing steel from the concrete. This method is labor-intensive and inefficient, making it difficult to meet the needs of large-scale construction waste processing. Mechanical crushing typically uses equipment such as jaw crushers and hammer crushers to break up reinforced concrete. However, due to the irregular distribution of reinforcing steel inside the concrete, the steel bars are prone to entanglement and jamming in the crushing mechanism during the crushing process, leading to equipment blockage or even damage, affecting the continuous and stable operation of the equipment.

[0004] To address the aforementioned issues, existing technologies employ crushing and rolling methods to separate reinforced concrete. These methods use relatively positioned rolling mechanisms to compress construction waste, causing cracks in the concrete and gradually separating it from the reinforcing bars. This reduces the risk of the reinforcing bars jamming the crushing equipment.

[0005] However, the above-mentioned equipment using the extrusion and compaction method still has the following shortcomings in actual use: First, construction waste is usually directly fed into the compaction mechanism through the feed inlet, lacking effective control over the feed amount and feeding state. When the instantaneous feed amount is too large or the construction waste is unevenly piled up, the construction waste is prone to overflow from the sides or corners of the compaction mechanism and enter the gaps between the equipment, causing the compaction mechanism to be unable to perform effective compaction operations. Second, after one extrusion and compaction, the concrete block often only cracks, while a lot of concrete is still attached to the surface of the reinforcing steel. The concrete and reinforcing steel are not fully separated, resulting in low sorting efficiency of the subsequent reinforcing steel and concrete aggregates, affecting the overall recycling effect of construction waste. Although the above-mentioned compaction method reduces the risk of reinforcing steel jamming, the construction waste still needs to further achieve full separation of reinforcing steel and concrete.

[0006] Therefore, how to provide a construction waste treatment equipment that can effectively control the feed amount, prevent construction waste from leaking out and getting stuck in the compaction mechanism, and further improve the separation effect of concrete and steel bars has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a construction waste crushing and separation device that solves the technical problems of construction waste overflow caused by direct connection between the crushing mechanism and the feeding mechanism during the crushing process, as well as the incomplete separation of concrete and steel bars in the crushed construction waste.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution: A construction waste crushing and separating device includes a base, on which are provided: A crushing mechanism, mounted on the base, is used to crush the construction waste. The crushing mechanism includes an inlet and an outlet. A feeding mechanism is provided on one side near the feed inlet of the crushing mechanism for quantitatively feeding construction waste into the crushing tank; A separation mechanism is located on the side of the crushing mechanism away from the feeding mechanism, and is used to separate concrete and steel bars in the crushed construction waste. The separation mechanism includes an upper track assembly and a lower track assembly. The upper track assembly is located above the lower track assembly and the two are spaced apart from each other. The upper track assembly moves along a first direction, and the lower track moves along a second direction opposite to the first direction. The upper track assembly and the lower track assembly move at different speeds. The surfaces of the upper track assembly and the lower track assembly are provided with uneven protrusions.

[0009] According to one aspect of the above technical solution, the crushing mechanism includes a frame, a crushing trough, and a crushing assembly. The frame is mounted on the base; the crushing trough is mounted on the base and connected to the frame, and the crushing trough has the feed inlet and the discharge outlet; the crushing assembly is located above the crushing trough and connected to the frame, and cooperates with the crushing trough to crush the construction waste in the crushing trough.

[0010] According to one aspect of the above technical solution, the crushing mechanism further includes a first discharge mechanism, which is disposed on the side of the crushing tank opposite to the discharge port, and is used to push the construction waste in the crushing tank toward the discharge port and discharge it from the crushing tank through the discharge port.

[0011] According to one aspect of the above technical solution, the crushing mechanism further includes a sealing assembly, which is located near the discharge port and connected to the frame, for opening or closing the discharge port. The sealing assembly includes a mounting bracket fixedly connected to the frame, a baffle slidably connected to the mounting bracket, and a baffle driving assembly fixedly connected to the mounting bracket. The baffle driving assembly is used to drive the baffle to slide along the mounting bracket.

[0012] According to one aspect of the above technical solution, the feeding mechanism includes a housing, and the housing is provided with a feeding chamber, a metering chamber, and a receiving bin arranged from top to bottom. A receiving platform is provided at intervals at the lower end of the feeding chamber. A pushing component is provided on the receiving platform. The metering chamber is provided on the pushing component. A discharge port is provided on the side of the receiving platform near the receiving bin. The pushing component slides between the receiving platform and the discharge port so that the metering chamber can selectively communicate with the feeding chamber or the receiving bin. A second discharge mechanism is provided on one side of the receiving bin to push out the construction waste inside the receiving bin.

[0013] According to one aspect of the above technical solution, a sealing cover is provided above the receiving hopper and slidably connected to the shell. The sealing cover is used to shut off the connection between the receiving hopper and the discharge port, so that the receiving hopper forms a closed discharge channel.

[0014] According to one aspect of the above technical solution, the lower track assembly includes a first bracket, a first transmission belt disposed on the first bracket, and a first driving component disposed on the first bracket, wherein the first driving component is used to drive the first transmission belt to circulate. The upper track assembly includes a second bracket, a first roller, a second roller, a third roller, a second transmission belt, and a second drive component. The first roller and the second roller are spaced apart and located on the side closest to the first transmission belt. The third roller is located above the first roller and the second roller. The second transmission belt is wound around the outside of the first roller, the second roller, and the third roller to form a ring transmission structure. The first roller and the second roller are slidably connected to the second bracket in a vertical direction via a first connecting rod, and a first elastic element is provided between the first connecting rod and the second bracket. The third roller is slidably connected to the second bracket in a vertical direction via a second connecting rod, and a second elastic element is provided between the second connecting rod and the second bracket. The second drive component is driven by the first roller or the second roller to drive the second transmission belt to circulate. Wherein, the first elastic element is used to apply an elastic preload force toward the first connecting rod toward the first transmission belt, so that the first roller and the second roller press the second transmission belt together; the second elastic element is used to apply an elastic thrust force toward the second connecting rod, so that the third roller has a tendency to move away from the first roller and the second roller, so as to keep the second transmission belt in a taut state.

[0015] According to one aspect of the above technical solution, the second driving component includes a second driving motor, a first pulley, a second pulley, a belt, and a belt tensioning mechanism. The second pulley is disposed on the output shaft of the second driving motor. The first pulley is coaxially connected to the first roller or the second roller. The belt is wrapped around the outside of the first pulley, the second pulley, and the belt tensioning mechanism to transmit the power of the second driving motor to the first roller or the second roller.

[0016] According to one aspect of the above technical solution, the speed of the upper track assembly is greater than the speed of the lower track assembly, and the ratio of the speed of the upper track assembly to the speed of the lower track assembly is between 2.5:1 and 3:1.

[0017] According to one aspect of the above technical solution, the construction waste crushing and separating device further includes a magnetic separation mechanism, which is located at the end of the separation mechanism away from the feeding mechanism, and is used to separate the reinforcing bars in the construction waste.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: A feeding mechanism on the feed inlet side of the crushing mechanism, through the sliding of the feeding component between the support platform and the discharge port, selectively connects the quantitative receiving chamber with the feeding chamber or receiving bin, thereby pushing the construction waste that slides into the quantitative receiving chamber from the rubber chamber to the receiving bin. Then, the second discharge mechanism pushes the construction waste from the feed inlet into the crushing trough, achieving quantitative feeding of the crushing mechanism. This avoids the direct connection between the discharge port of the traditional feeding mechanism and the crushing trough, which leads to a large amount of construction waste directly entering the crushing trough and causing overflow, resulting in the crushing mechanism malfunctioning. Furthermore, by setting a separation mechanism at one end of the discharge port of the crushing mechanism, the relative movement of the upper and lower track components of the separation mechanism forms a crushing and tearing effect on the construction waste sandwiched between the upper and lower track components, ensuring complete separation of the concrete and reinforcing steel from the crushed construction waste, thereby improving the subsequent separation effect of concrete and reinforcing steel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a construction waste crushing and separating device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the crushing mechanism in one embodiment of the present invention; Figure 3 This is a schematic diagram of the sealing assembly in one embodiment of the present invention; Figure 4 This is a schematic diagram of the feeding mechanism in one embodiment of the present invention; Figure 5 This is a schematic diagram of the dissociation mechanism in one embodiment of the present invention; Explanation of key component symbols: 1-Base; 2-Crushing mechanism, 21-Frame, 211-First chute; 22-Crushing trough, 221-Inlet, 222-Outlet, 23-Crushing assembly, 231-Crushing drive assembly, 232-Crushing plate, 233-Conical spike, 234-First slider, 24-First discharge mechanism, 241-Push plate, 242-Push plate drive assembly, 25-Sealing assembly, 251-Mounting bracket, 252-Baffle, 253-Screw, 254-Linkage rod, 255-Baffle drive motor; 3-Feeding mechanism, 31-Shell, 32-Feeding chamber, 33-Pushing assembly, 331-Push frame body, 3311-Quantitative receiving chamber, 3312-Isolation part, 3313-Support part, 332-Push frame drive assembly, 34-Receiving platform, 35-Discharge port, 36-Receiving bin, 37-Sealing cover, 38-Second discharge mechanism; 4-Disengagement mechanism, 41-Upper track assembly, 411-Second bracket, 412-First roller, 413-Second roller, 414-Third roller, 415-Second transmission belt, 416-Second drive component, 4161-Second drive motor, 4162-First pulley, 4163-Second pulley, 4164-Belt tensioning mechanism, 4165-Belt, 417-First connecting rod, 418-Second connecting rod, 419-First elastic element, 420-Second elastic element, 42-Lower track assembly, 421-First bracket, 422-First transmission belt, 423-First drive component, 43-Protrusion, 44-Guardrail plate; The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Please see Figure 1 An embodiment of the present invention provides a construction waste crushing and separating device, which includes a crushing mechanism 2, a feeding mechanism 3, and a separation mechanism 4.

[0024] The crushing mechanism 2 is installed on the base 1 and is used to initially crush the construction waste. The feeding mechanism 3 is installed on one side of the feed inlet 221 of the crushing mechanism 2 and is used to quantitatively transport the construction waste into the crushing mechanism 2. The separation mechanism 4 is installed at the discharge outlet 222 of the crushing mechanism 2 and is used to receive the construction waste crushed by the crushing mechanism 2 and further separate the concrete and steel bars from the construction waste.

[0025] See Figure 2The crushing mechanism 2 includes a frame 21, a crushing trough 22, and a crushing assembly 23. The frame 21 is mounted on a base 1. The crushing trough 22 is located near the lower part of the frame 21, and its bottom is connected to the base 1. The crushing trough 22 forms a crushing cavity for crushing construction waste. An inlet 221 is located on one side of its top, and an outlet 222 is located on its side. The crushing assembly 23 is located directly above the crushing trough 22 and is fixedly connected to the frame 21. Specifically, the crushing assembly... Component 23 includes a crushing drive assembly 231 fixedly connected at one end to the frame 21. The crushing drive assembly 231 can be specifically a hydraulic cylinder. A crushing plate 232 is provided at the output end of the crushing drive assembly 231. The size of the crushing plate 232 is adapted to the size of the crushing trough 22. Multiple conical spikes 233 are provided on the lower surface of the crushing plate 232 to increase the pressure at the crushing contact surface during the crushing of construction waste, making the construction waste easier to crush and crack. Notably, to ensure the smooth movement of the crushing plate 232, a first slider 234 is provided on the crushing plate 232, and a first sliding groove 211 adapted to the first slider 234 is provided on the frame 21. During operation, the hydraulic cylinder pushes the crushing plate 232 downwards along the vertical direction of the frame 21, entering the crushing trough 22 to crush the construction waste within. Furthermore, the crushing mechanism 2 also includes a first discharge mechanism 24, which is located on the opposite side of the discharge port 222 of the crushing trough 22. The discharge mechanism 24 includes a push plate 241 and a push plate drive assembly 242 located on the side of the push plate 241 away from the crushing trough 22. The push plate drive assembly 242 is one of an electric push rod, a hydraulic push rod, or a cylinder, and is fixedly connected to the base 1. After the crushing operation of the crushing assembly 23 is completed, it retracts to its highest point. Then, the push plate drive assembly 242 pushes the push plate 241 to move towards the discharge port 222, pushing the crushed construction waste out of the discharge port 222 from the crushing trough 22, allowing the crushed construction waste to enter the next step, the separation mechanism 4.

[0026] See Figure 3Since the crushing tank 22 has a discharge port 222, in order to prevent construction waste from sliding out from the discharge port 222 side during the crushing process, in some embodiments, the crushing mechanism 2 also includes a sealing component 25 disposed on the side of the discharge port 222 for opening or closing the discharge port 222. More specifically, the sealing assembly 25 includes a mounting frame 251 and a baffle 252. The mounting frame 251 is fixedly connected to the frame 21. The baffle 252 is disposed on the mounting frame 251 and can slide within a second sliding groove provided in the mounting frame 251. A baffle driving assembly for driving the baffle 252 to slide is provided on the mounting frame 251. The baffle driving assembly includes two lead screws 253, a linkage rod 254, and a baffle driving motor 255 disposed on the mounting frame 251. Both lead screws 253 are rotatably connected to the mounting frame 251 and slidably connected to the baffle 252. A bevel gear that meshes with the linkage rod 254 is provided at the same end of both lead screws 253. The baffle driving motor 255 is disposed on one side of the linkage rod 254. Start the baffle drive motor 255, which drives the linkage rod 254 to rotate, thereby driving the two lead screws 253 to rotate synchronously, and then driving the baffle 252 to slide in the second slide groove, realizing the opening and closing operation of the discharge port 222.

[0027] See Figure 4The feeding mechanism 3 includes a housing 31, within which are a feeding chamber 32, a metering chamber 3311, and a receiving bin 36. The feeding chamber 32 is inclined, and a receiving platform 34 is spaced apart at the lower end of the feeding chamber 32. Construction waste slides from the feeding chamber 32 onto the receiving platform 34. A pushing assembly 33 is provided between the feeding chamber 32 and the receiving platform 34, and the metering chamber 3311 is located on the pushing assembly 33. A discharge port 35 is provided on one side of the receiving platform 34, and the receiving bin 36 is located at the lower end of the discharge port 35. The pushing assembly 33 is slidably connected to the housing 31, allowing the metering chamber 3311 in the pushing assembly 33 to move between the receiving platform 34 and the discharge port 35. During operation, construction waste enters the feeding chamber 32 and covers the quantitative receiving chamber 3311. Then, the pushing component 33 slides, pushing the construction waste in the quantitative receiving chamber 3311 to the discharge port 35, and then dropping it into the receiving bin 36 through the discharge port 35. This achieves quantitative separation of construction waste. Specifically, the pusher assembly 33 includes a pusher body 331, wherein the middle part of the pusher body 331 is hollow to form the quantitative receiving cavity 3311. The pusher body 331 includes an isolation part 3312 disposed on one side. The lower end of the isolation part 3312 is provided with a support part 3313, which is used to support the entire pusher body 331. The support part 3313 is slidably connected to the receiving platform 34. A third slider (not shown in the figure) is provided on one side of the pusher body 331. A third sliding groove adapted to the third slider is provided on the housing 31. A pusher drive assembly 332 is provided on one side of the pusher body 331, wherein the pusher drive assembly 332 is disposed at the lower end of the isolation part 3312 and fixedly connected to the housing 31. When the pusher drive assembly 332 is activated, the pusher body 331 is initially positioned on the receiving platform 34, connecting the quantitative receiving cavity 3311 with the feeding cavity 32. Construction waste enters the quantitative receiving cavity 3311 from the feeding cavity 32. As the pusher drive assembly 332 pushes, the pusher body 331 moves towards the lower discharge port 35. The construction waste located at the upper end of the quantitative receiving cavity 3311 is blocked onto the isolation part 3312, while the construction waste inside the quantitative receiving cavity 3311 moves with the pusher body 331. When the pusher body 331 is positioned above the discharge port 35, the quantitative receiving cavity 3311 is connected to the receiving bin 36, thereby quantitatively conveying the construction waste in the quantitative receiving cavity 3311 to the receiving bin 36, achieving quantitative conveying of construction waste. After the conveying is completed, the pusher drive assembly 332 is retracted, driving the pusher body 331 to reset. As the isolation part 3312 retracts, the construction waste falls back into the quantitative receiving cavity 3311, filling the quantitative receiving cavity 3311. The above steps are repeated to enable the feeding mechanism 3 to achieve intermittent quantitative conveying of construction waste.Furthermore, a second discharge mechanism 38 is provided on one side of the receiving bin 36 to push out the construction waste in the receiving bin 36. It can be understood that the construction waste is pushed out of the receiving bin 36 through the second discharge mechanism 38 and enters the crushing tank 22 from the feed port 221 of the crushing mechanism 2, thus completing the quantitative conveying of construction waste by the feeding mechanism 3 to the crushing mechanism 2. Preferably, a sealing cover 37 is provided above the receiving bin 36 and slidably connected to the housing 31. The sealing cover 37 is used to shut off the connection between the receiving bin 36 and the discharge port 35, so that the receiving bin 36 forms a closed discharge channel. When construction waste falls into the receiving bin 36 and forms a cone shape, the sealing cover 37 can be used to flatten the end. The sealing cover 37 and the receiving bin 36 form a discharge channel, so that the pushing component 33 can smoothly push the construction waste out of the receiving bin 36. It is worth noting that a power component for pushing the sealing cover 37 to slide is provided on the housing 31. The power component can be an electric push rod or a cylinder.

[0028] See Figure 5 The separation mechanism 4 includes an upper track assembly 41 and a lower track assembly 42. The upper track assembly 41 is positioned above the lower track assembly 42, and the two are spaced a certain distance apart to form a separation channel for construction waste to pass through.

[0029] The lower track assembly 42 includes a first support 421, a first transmission belt 422 disposed on the first support 421, and a first drive component 423. The first drive component 423 includes a first drive motor and a reducer, and is used to drive the first transmission belt 422 in cyclic motion. The upper track assembly 41 includes a second support 411, a first roller 412, a second roller 413, a third roller 414, a second transmission belt 415, and a second drive component 416. The first roller 412 and the second roller 413 are horizontally spaced above the first transmission belt 422, and the third roller 414 is positioned above the first roller 412 and the second roller 413. The first transmission belt 422 is wound around the outside of the first roller 412, the second roller 413, and the third roller 414 to form a ring-shaped transmission structure.

[0030] Both the first roller 412 and the second roller 413 are slidably connected to the second bracket 411 in a vertical direction via a first connecting rod 417. A first elastic element 419, which is a compression spring, is provided between the first connecting rod 417 and the second bracket 411. The third roller 414 is positioned above the second bracket 411 and is slidably connected to the second bracket 411 in a vertical direction via a second connecting rod 418. A second elastic element 420, which is also a compression spring, is provided between the second connecting rod 418 and the second bracket 411. Under normal conditions, both the first elastic element 419 and the second elastic element 420 are in a compressed state, and the portion of the second transmission belt 415 between the first roller 412 and the second roller 413 is arranged parallel to the first transmission belt 422. The first elastic element 419 is used to apply an elastic preload force toward the first transmission belt 422 to the first connecting rod 417 so that the first roller 412 and the second roller 413 press the second transmission belt 415 together. The second elastic element 420 is used to apply an elastic thrust force to the second connecting rod 418 so that the third roller 414 has a tendency to move away from the first roller 412 and the second roller 413, thereby ensuring that the second transmission belt 415 is in a taut state in real time. When construction waste enters the separation channel, the height of some construction waste is greater than the interval distance. At this time, the second transmission belt 415 is lifted, thereby pushing the first roller 412 or the second roller 413 to move upward and compressing the first elastic element 419. At the same time, the second elastic element 420 pushes the third roller 414 to move upward to compensate for the upward movement distance of the first roller 412 or the second roller 413, so that the second transmission belt 415 is always in a taut state.

[0031] Furthermore, in this embodiment, the second driving component 416 includes a second driving motor 4161, a first pulley 4162, a second pulley 4163, a belt 4165, and a belt tensioning mechanism 4164. Specifically, the second pulley 4163 is disposed on the output shaft of the second driving motor 4161, the first pulley 4162 is coaxially connected to the first roller 412, and the belt 4165 is wound around the outside of the first pulley 4162, the second pulley 4163, and the belt tensioning mechanism 4164 to transmit the power of the second driving motor 4161 to the first roller 412, thereby realizing power transmission. When the first roller 412 moves upward under force, it drives the first pulley 4162 to move upward. In order to ensure continuous power transmission, the first pulley 4162 drives the belt 4165 to squeeze the belt tensioning mechanism 4164 to deform it, so as to compensate for the upward movement distance of the first pulley 4162, thereby adapting to the up and down swing of the first roller 412 and maintaining the continuous power transmission of the entire second drive component 416.

[0032] See Figure 5The second drive belt 415 of the upper track assembly 41 moves along a first direction, and the first drive belt 422 of the lower track assembly 42 moves along a second direction opposite to the first direction, and the two run at different speeds. More specifically, in this embodiment, the first direction is the movement of the upper surface of the first drive belt 422 away from the crushing mechanism 2, and conversely, the second direction is the movement of the lower surface of the second drive belt 415 towards the crushing mechanism 2. Further, both the second drive belt 415 and the first drive belt 422 are provided with uneven protrusions 43, wherein the protrusions 43 can be configured as toothed or corrugated protrusions. Under the action of relative motion and differential speed, they generate kneading, squeezing and shearing forces on the crushed construction waste, so that the concrete attached to the surface of the reinforcing steel is fully peeled off.

[0033] In some embodiments, the upper track assembly 41 moves at a speed greater than the lower track assembly 42, and the ratio of the upper track assembly 41 speed to the lower track speed is between 2.5:1 and 3:1. Preferably, the first transmission belt 422 moves at a speed of 0.3 m / s, the second transmission belt 415 moves at a speed of 0.8 m / s, and the ratio of the second transmission belt 415 to the first transmission belt 422 is 2.67:1, which is within the optimal range of 2.5:1 to 3:1. This speed configuration enables the separation mechanism 4 to have a stable and effective separation effect, meeting actual production needs. It is worth mentioning that, to improve the operational stability of the separation mechanism 4, the lower track assembly 42 is provided with a discharge port 222 at its lower end, and the horizontal length of the upper track assembly 41 is less than the horizontal length of the lower track assembly 42. Furthermore, to prevent construction waste from falling out from the side plate of the first transmission belt 422, guardrails 44 are provided on both sides of the first support 421.

[0034] In some embodiments, the construction waste crushing and separating device further includes a magnetic separation mechanism, which is disposed at the output end of the dissociation mechanism and is used to perform magnetic separation on the dissociated construction waste to separate magnetic metal materials such as reinforcing bars. The magnetic separation mechanism can be a commonly used magnetic separation device in the art, and its specific structure and working principle are prior art and will not be described in detail here.

[0035] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A construction waste crushing and separating device, comprising a base, characterized in that, The base is provided with: A crushing mechanism, mounted on the base, is used to crush the construction waste. The crushing mechanism includes an inlet and an outlet. A feeding mechanism is provided on one side near the feed inlet of the crushing mechanism for quantitatively feeding construction waste into the crushing tank; A separation mechanism is disposed on the side of the crushing mechanism near the discharge port, and is used to separate concrete and steel bars in the crushed construction waste. The separation mechanism includes an upper track assembly and a lower track assembly. The upper track assembly is disposed above the lower track assembly and the two are spaced apart from each other. The upper track assembly moves along a first direction, and the lower track assembly moves along a second direction opposite to the first direction. The upper track assembly and the lower track assembly move at different speeds. The surfaces of the upper track assembly and the lower track assembly are provided with uneven protrusions.

2. The construction waste crushing and separating device according to claim 1, characterized in that, The pulverizing mechanism includes: The frame is mounted on the base. A crushing tank is disposed on the base and connected to the frame. The crushing tank is provided with the inlet and the outlet. The crushing assembly, located above the crushing trough and connected to the frame, works in conjunction with the crushing trough to crush construction waste within it.

3. The construction waste crushing and separating device according to claim 2, characterized in that, The crushing mechanism further includes a first discharge mechanism, which is disposed on the side of the crushing tank opposite to the discharge port, and is used to push the construction waste in the crushing tank toward the discharge port and discharge it from the crushing tank through the discharge port.

4. The construction waste crushing and separating device according to claim 2, characterized in that, The crushing mechanism further includes a sealing assembly, which is located near the discharge port and connected to the frame. The sealing assembly is used to open or close the discharge port. The sealing assembly includes a mounting bracket fixedly connected to the frame, a baffle slidably connected to the mounting bracket, and a baffle driving assembly fixedly connected to the mounting bracket. The baffle driving assembly is used to drive the baffle to slide along the mounting bracket.

5. The construction waste crushing and separating device according to claim 1, characterized in that, The feeding mechanism includes a housing, inside which a feeding chamber, a metering chamber, and a receiving bin are arranged from top to bottom. A receiving platform is provided at intervals at the lower end of the feeding chamber. A pushing component is provided on the receiving platform. The metering chamber is provided on the pushing component. A discharge port is provided on the side of the receiving platform near the receiving bin. The pushing component slides between the receiving platform and the discharge port so that the metering chamber can selectively communicate with the feeding chamber or the receiving bin. A second discharge mechanism is provided on one side of the receiving bin for discharging construction waste from the receiving bin.

6. The construction waste crushing and separating device according to claim 5, characterized in that, The receiving hopper is provided with a sealing cover that is slidably connected to the shell. The sealing cover is used to shut off the connection between the receiving hopper and the discharge port, so that the receiving hopper forms a closed discharge channel.

7. The construction waste crushing and separating device according to claim 1, characterized in that, The lower track assembly includes a first bracket, a first transmission belt disposed on the first bracket, and a first drive component disposed on the first bracket. The first drive component is used to drive the first transmission belt to move in a cyclic motion. The upper track assembly includes a second bracket, a first roller, a second roller, a third roller, a second transmission belt, and a second drive component. The first roller and the second roller are spaced apart and located near the first transmission belt. The third roller is located above the first roller and the second roller. The second transmission belt is wound around the outside of the first roller, the second roller, and the third roller to form a ring transmission structure. The first roller and the second roller are slidably connected to the second bracket in a vertical direction via a first connecting rod, and a first elastic element is provided between the first connecting rod and the second bracket. The third roller is slidably connected to the second bracket in a vertical direction via a second connecting rod, and a second elastic element is provided between the second connecting rod and the second bracket. The second drive component is driven by the first roller or the second roller to drive the second transmission belt to circulate. Wherein, the first elastic element is used to apply an elastic preload force toward the first connecting rod toward the first transmission belt, so that the first roller and the second roller press the second transmission belt together; the second elastic element is used to apply an elastic thrust force toward the second connecting rod, so that the third roller has a tendency to move away from the first roller and the second roller, so as to keep the second transmission belt in a taut state.

8. The construction waste crushing and separating device according to claim 7, characterized in that, The second driving component includes a second driving motor, a first pulley, a second pulley, a belt, and a belt tensioning mechanism. The second pulley is mounted on the output shaft of the second driving motor. The first pulley is coaxially connected to the first roller or the second roller. The belt is wound around the outside of the first pulley, the second pulley, and the belt tensioning mechanism to transmit the power of the second driving motor to the first roller or the second roller.

9. The construction waste crushing and separating device according to claim 1, characterized in that, The speed of the upper track assembly is greater than that of the lower track assembly, and the ratio of the speed of the upper track assembly to that of the lower track assembly is between 2.5:1 and 3:

1.

10. The construction waste crushing and separating device according to claim 1, characterized in that, The construction waste crushing and separating device also includes a magnetic separation mechanism, which is located at the end of the separation mechanism away from the feeding mechanism, and is used to separate the reinforcing bars in the construction waste.

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