Construction waste recycling concrete device

Abstract

The utility model discloses a kind of construction waste recycled concrete devices, belong to construction waste processing equipment technical field, including support plate, mounting plate, screen, screen mechanism and quick replacement mechanism, screen mechanism is by motor, multiple drive shafts, cam, gear and chain constitute, motor drives and through chain and gear linkage each drive shaft synchronous rotation, cam on drive shaft promotes mounting plate to drive screen to do high-frequency reciprocating motion, quick replacement mechanism is by mounting groove, spring and clamping plate constitute, by pressing spring by clamping plate compression, screen can be released to realize quick replacement by clamping. The utility model passes through synchronous screening structure, improves aggregate grading precision and reduces energy consumption;Through quick replacement mechanism, maintenance efficiency is improved, and production continuity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of construction waste treatment equipment, and in particular to a construction waste recycled concrete device. Background Technology

[0002] With the acceleration of urbanization, the amount of construction waste generated is increasing day by day. The resource utilization of these wastes, especially the preparation of recycled aggregates through crushing and screening for the production of recycled concrete, has become an important way to achieve sustainable development in the construction industry. The quality of recycled aggregates, especially the accuracy of their particle size distribution, directly determines the final performance of recycled concrete.

[0003] In the production process of recycled aggregates, screening is a key step to ensure the gradation of aggregates. Existing production lines generally use multi-layer vibrating screens to grade the crushed construction waste mixture. In order to drive the vibration of the multi-layer screens, the common technical solution in the industry is to equip each or several layers of screens with an independent drive motor. This multi-motor independent drive mode has exposed inherent defects in practical applications. Due to the slight differences in motor start-up, load changes and their own performance, it is difficult to ensure that the multiple motors can operate in perfect synchronization. This asynchrony will cause the vibration rhythm of each layer of screens to be misaligned, which will disrupt the normal movement trajectory of the material on the screen surface, resulting in chaotic aggregate gradation and reduced gradation accuracy, which will directly affect the quality stability of recycled concrete.

[0004] Screens are vulnerable parts that require frequent replacement due to high-intensity vibration and continuous friction with hard aggregates. Existing equipment typically uses traditional structures such as bolts and pressure plates to fix screens. Replacing them requires disassembling and assembling a large number of fasteners one by one, which is cumbersome and time-consuming. This results in excessive downtime for equipment maintenance, which seriously restricts the continuous operation capability and overall production efficiency of the entire production line.

[0005] Therefore, this utility model proposes a device for recycling concrete from construction waste to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of construction waste recycled concrete devices, such as the multiple motors independently driven in the screening mechanism leading to misalignment of screening rhythm, excessive energy consumption, and complex screen replacement structure and time-consuming maintenance, this utility model aims to provide a construction waste recycled concrete device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a device for recycling construction waste into concrete, including: a support plate, an mounting plate, and a screen fixed on the mounting plate; as well as a screening mechanism and a quick replacement mechanism.

[0008] The screening mechanism includes a motor, at least two drive shafts arranged side by side, a cam fixedly connected to the drive shaft, a gear fixedly connected to the outer periphery of the drive shaft, and a chain; the quick change mechanism includes a mounting slot opened in the mounting plate, a spring housed in the mounting slot, and a clamping plate slidably arranged in the mounting slot.

[0009] Furthermore, the drive shaft is rotatably connected to the support plate, and at least one drive shaft is driven by a motor; the mounting plate is positioned above the cam, and when the cam rotates, it abuts against and pushes the mounting plate to reciprocate; the chain is meshed with the gear to achieve synchronous rotation of at least two drive shafts; the clamping plate abuts against the spring and extends out of the mounting groove under the elastic force of the spring to clamp the screen.

[0010] Preferably, the cam is an eccentric wheel structure, which, when rotating, periodically abuts against and pushes the mounting plate through its outer protrusion, thereby achieving high-frequency up-and-down reciprocating motion and improving screening efficiency.

[0011] Preferably, when the clamp is pressed by an external force, it can slide inward and compress the spring, causing it to retract into the mounting groove, thereby conveniently releasing the clamping and fixing of the screen and facilitating disassembly.

[0012] Preferably, the mounting plate and the screen are configured as a stacked structure of at least two layers, and each layer of the mounting plate is driven by a cam on its corresponding drive shaft to achieve multi-stage precise screening of construction waste mixture.

[0013] Preferably, in order to make the transmission structure more compact and reasonable, the gear is fixedly connected to the end of the drive shaft away from the motor, so that the power transmission chain can be concentrated on one side of the device.

[0014] Preferably, the mounting groove is opened along the side wall of the mounting plate to provide stable guidance for the reciprocating motion of the clamping plate. The end of the clamping plate used for locking extends out of the groove to abut against and fix the edge of the screen, ensuring the reliability of the clamping.

[0015] Preferably, the construction waste recycled concrete device further includes a crusher and a batching machine. The screening mechanism, mounting plate and screen are used as screening components and are connected in series between the discharge end of the crusher and the feed end of the batching machine to form a complete processing line.

[0016] Preferably, as a specific workflow, construction waste is crushed by the crusher and then conveyed to the top layer of the screen by a conveying device. After being vibrated and graded by the screen, qualified aggregates that meet the requirements fall into the batching machine below, ready for subsequent concrete batching.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model solves the problems of misaligned screening rhythm, disordered aggregate gradation, and excessive energy consumption caused by multiple motors driving independently in existing devices. It achieves the technical effect of driving multiple screens synchronously and rhythmically with a small amount of power source, thereby significantly improving the aggregate grading accuracy and screening efficiency, and effectively reducing equipment energy consumption.

[0018] 2. This utility model, by setting up a quick replacement mechanism consisting of a spring, a clamping plate, and a mounting groove, quickly releases the clamping and fixing of the screen by pressing the clamping plate to compress the spring. This solves the problem that the replacement of the screen, as a vulnerable part, is cumbersome, time-consuming, and affects the continuity of production in existing devices. It achieves the technical effect of completing the screen replacement in a short time without complicated tools, significantly improving the maintenance efficiency of the equipment and ensuring the continuity of production.

[0019] 3. This utility model solves the comprehensive problem of difficulty in balancing screening accuracy, energy consumption and maintenance efficiency in existing construction waste treatment devices by organically combining a high-efficiency synchronous screening mechanism with a convenient quick screen replacement mechanism. It achieves a comprehensive technical effect of compact and reliable overall structure, stable operation, accurate screening, energy saving and high efficiency and easy maintenance, and is more suitable for the needs of industrial continuous production. Attached Figure Description

[0020] Figure 1 This is a perspective view of a construction waste-to-concrete recycling device proposed in this utility model; Figure 2 This is a structural exploded view of the screening mechanism of a construction waste recycled concrete device proposed in this utility model; Figure 3 This is a structural exploded view of the gears in a construction waste recycled concrete device proposed in this utility model; Figure 4 This is a cross-sectional view of the mounting plate of a construction waste recycled concrete device proposed in this utility model.

[0021] Legend: 1. Crusher; 2. Screening mechanism; 201. Support plate; 202. Motor 1; 203. Drive shaft; 204. Cam; 205. Gear; 206. Chain; 3. Quick change mechanism; 301. Clamping plate; 302. Mounting groove; 303. Spring; 304. Mounting plate; 305. Screen; 4. Batching machine. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0023] Please refer to Figures 1 to 4 This utility model provides a construction waste recycled concrete device, which aims to solve the problems of misaligned screening rhythm, excessive energy consumption, complex screen replacement structure, and time-consuming maintenance caused by multi-motor driven screens in existing construction waste recycled concrete devices.

[0024] like Figure 1 As shown, a construction waste-to-concrete recycling device includes a crusher 1, a batching machine 4, and a screening assembly disposed between the crusher 1 and the batching machine 4; the screening assembly includes a support plate 201 serving as the overall mounting base, and a mounting plate 304 for supporting and vibrating the screened material; as shown Figures 2 to 4 As shown, the structure of the device also includes a screening mechanism 2 for driving the vibration of the mounting plate 304 and a quick-change mechanism 3 for fixing the screen 305; the support plate 201 provides a stable mounting platform for the screening mechanism 2 and the mounting plate 304; the screening mechanism 2 is disposed between the support plate 201 and the mounting plate 304, and is used to convert power into high-frequency reciprocating motion of the mounting plate 304; the screen 305 is fixed on the upper surface of the mounting plate 304 through the quick-change mechanism 3; specifically, the screening mechanism 2 includes a motor 202 fixedly connected to the support plate 201, at least two drive shafts 203 rotatably connected to the support plate 201, a cam 204 fixedly connected to the drive shafts 203, a gear 205 fixedly connected to the outer periphery of the drive shafts 203, and... Chain 206; at least one drive shaft 203 is driven and connected to motor 202 to receive power from motor 202; mounting plate 304 is disposed above cam 204, and the outer periphery of cam 204 can abut and push mounting plate 304 when rotating; chain 206 is meshed with gears 205 on at least two drive shafts 203 for synchronous power transmission; quick change mechanism 3 includes mounting groove 302 opened in mounting plate 304, spring 303 housed in mounting groove 302, and clamping plate 301 slidably disposed in mounting groove 302; one end of clamping plate 301 abuts against spring 303, and the other end extends out of mounting groove 302 under the elastic force of spring 303 for clamping screen 305.

[0025] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the screening mechanism 2 of the construction waste recycled concrete device achieves efficient and synchronous screening function through the specific structural cooperation and connection relationship of its internal components.

[0026] Please refer to Figure 2 and Figure 3 The screening mechanism 2 consists of a motor 202, a drive shaft 203, a cam 204, a gear 205, and a chain 206. The motor 202 is fixedly connected to the side of the support plate 201, and its output shaft is connected to one of the drive shafts 203, providing power to the entire screening mechanism 2. The drive shaft 203 is horizontally rotatably connected to the support plate 201, and at least two drive shafts 203 are arranged side-by-side to accommodate multi-layer screening. The cam 204 is fixedly connected to each drive shaft 203 and is an eccentric wheel structure. The outer circumferential surface of its protrusion abuts against the bottom surface of the mounting plate 304. Its function is to periodically push the mounting plate 304 to perform high-frequency up-and-down reciprocating motion using the eccentric structure when the drive shaft 203 rotates. Simultaneously... Gears 205 are fixedly connected to the outer periphery of each drive shaft 203. Specifically, gears 205 are fixedly connected to the end of drive shaft 203 away from motor 202. Chain 206 surrounds and meshes with all gears 205, connecting the rotation of all drive shafts 203 into a rigid synchronous system. This linkage structure formed by chain 206 and gear 205 ensures that only a small number of motors 202 are needed to synchronously drive all cams 204 to rotate at the same angular velocity and phase. This ensures that the multi-layer mounting plate 304 and screen 305 can reciprocate at a high frequency with a completely synchronized rhythm. This reduces the number of power components to reduce energy consumption and avoids gradation disorder caused by power delay in multi-stage screening through the rigid synchronization of chain drive.

[0027] As a preferred embodiment, to achieve quick replacement of the screen 305, please refer to... Figure 4 The quick-change mechanism 3 achieves convenient installation and removal of the screen 305 through the specific structural cooperation and connection of its internal components. An installation groove 302 is provided on the side wall of the mounting plate 304, providing a stable and reliable movement space for the clamping plate 301 and the spring 303. The spring 303 is housed inside the mounting groove 302, with one end abutting against the bottom of the groove. The clamping plate 301 is slidably disposed within the mounting groove 302, with one end abutting against the other end of the spring 303, and its other end engaging against the edge of the screen 305. In its natural state, the spring 303 pushes the clamping plate 301 out of the mounting groove 302, thereby firmly clamping the screen 305 onto the mounting plate 304. When the screen 305 needs to be replaced, pressing the clamping plate 301 compresses the spring 303 and retracts it into the mounting groove 302, releasing the clamping fixation of the old screen 305 and achieving quick disassembly and replacement.

[0028] As another preferred embodiment, to achieve a complete construction waste treatment process, please refer to... Figure 1 The device is equipped with a crusher 1 at the feed end and a batching machine 4 at the discharge end. The screening mechanism 2, the mounting plate 304, and the screen 305 are connected in series between the discharge end of the crusher 1 and the feed end of the batching machine 4. After the construction waste is initially crushed by the crusher 1, it is sent to the uppermost screen 305 by the conveying device. After being screened by the vibration of multiple screens 305, the qualified aggregate that meets the particle size requirements falls smoothly into the batching machine 4 below for subsequent production of recycled concrete.

[0029] As another preferred embodiment, in order to adapt to different screening requirements, such as Figure 1 As shown, the mounting plate 304 and the screen 305 can be configured as a stacked structure of at least two layers; each mounting plate 304 is independently driven by a cam 204 on its corresponding drive shaft 203; through the synchronous transmission of the chain 206 and the gear 205, it is ensured that all levels of mounting plates 304 and screens 305 vibrate at the same frequency and phase, thus achieving efficient and precise multi-stage screening.

[0030] Working principle: When using this device, construction waste is crushed by the crusher 1 and then conveyed to the screen 305. Through the screening mechanism 2, the motor 202 is started, and the drive shaft 203 fixed by the support plate 201 drives the cam 204 to rotate. Utilizing the eccentric structure of the cam 204, its protrusion periodically and continuously pushes the mounting plate 304 to make high-frequency up-and-down reciprocating motion, so that the material on the screen 305 is graded and screened due to vibration. At the same time, the gears 205 outside the multiple drive shafts 203 are linked through the chain 206. Only a small number of motors 202 are needed to synchronously drive the movement of multiple screens 305. This reduces the number of power components to reduce energy consumption, and the rigid synchronization of the chain drive avoids the gradation disorder caused by power delay in multi-stage screening. It solves the problems of misaligned screening rhythm and excessive energy consumption caused by independent driving of multiple motors in existing devices, and greatly improves the aggregate grading accuracy and screening efficiency. Furthermore, when the screen 305 needs to be replaced due to long-term wear, the quick replacement mechanism 3 presses the clamp 301 installed in the mounting groove 302, causing it to compress the built-in spring 303 and retract into the mounting groove 302, thus releasing the clamping fixation on the old screen 305. At this time, the old screen 305 can be quickly removed, and after replacing it with a new screen 305, the clamp 301 is released. The spring 303 releases its elastic potential energy, pushing the clamp 301 to reset and re-clamp the new screen 305, completing the replacement. At the same time, the mounting groove 302 provides a stable movement space for the clamp 301 and the spring 303, ensuring the reliability of the locking structure and avoiding the risk of the screen 305 loosening during screening vibration. After the replacement is completed, the qualified aggregate smoothly enters the batching machine 4, ensuring the continuity of production.

Claims

1. A construction waste recycled concrete device, comprising a support plate (201), an mounting plate (304), and a screen (305) fixed to the mounting plate (304), characterized in that, The construction waste recycled concrete device also includes a screening mechanism (2) and a quick replacement mechanism (3). The screening mechanism (2) includes a motor (202), at least two drive shafts (203) arranged side by side, a cam (204) fixedly connected to the drive shaft (203), a gear (205) fixedly connected to the outer periphery of the drive shaft (203), and a chain (206). The drive shaft (203) is rotatably connected to the support plate (201), wherein at least one of the drive shafts (203) is drivenly connected to the motor (202). The mounting plate (304) is disposed above the cam (204). When the cam (204) rotates, it abuts against and pushes the mounting plate (304) to reciprocate. The chain (206) is meshed with the gear (205) to achieve synchronous rotation of the at least two drive shafts (203). The quick change mechanism (3) includes a mounting groove (302) opened in the mounting plate (304), a spring (303) housed in the mounting groove (302), and a clamping plate (301) slidably disposed in the mounting groove (302). The clamping plate (301) abuts against the spring (303) and extends out of the mounting groove (302) under the elastic force of the spring (303) to clamp the screen (305).

2. The construction waste recycled concrete device according to claim 1, characterized in that, The cam (204) is an eccentric wheel. When the cam (204) rotates, its protrusion periodically abuts against and pushes the mounting plate (304) to make high-frequency up-and-down reciprocating motion.

3. The construction waste recycled concrete device according to claim 1, characterized in that, When the clamp (301) is pressed by an external force, it can compress the spring (303) and retract into the mounting groove (302) to release the clamping and fixing of the screen (305).

4. The construction waste recycled concrete device according to claim 1, characterized in that, The mounting plate (304) and the screen (305) are provided with at least two layers, and each layer of the mounting plate (304) is driven by the cam (204) on the corresponding drive shaft (203).

5. The construction waste recycled concrete device according to claim 1, characterized in that, The gear (205) is fixedly connected to the end of the drive shaft (203) away from the motor (202).

6. The construction waste recycled concrete device according to claim 1, characterized in that, The mounting groove (302) is opened along the side wall of the mounting plate (304), and the snap-fit ​​end of the clamping plate (301) is used to abut the edge of the screen (305).

7. The construction waste recycled concrete device according to claim 1, characterized in that, It also includes a crusher (1) and a batching machine (4), wherein the screening mechanism (2), the mounting plate (304) and the screen (305) are connected in series between the discharge end of the crusher (1) and the feed end of the batching machine (4).

8. A construction waste recycled concrete device according to claim 7, characterized in that, After being crushed by the crusher (1), the construction waste is conveyed to the top layer of the screen (305) by the conveying device. The qualified aggregates after being screened and graded by the screen (305) fall into the batching machine (4).

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