High-strength concrete recycled aggregate preparation mechanism

Abstract

The utility model relates to the technical field of concrete recycled aggregate preparation, and discloses a high-strength concrete recycled aggregate preparation mechanism which comprises an outer fixing cylinder which is transversely and horizontally distributed, and a screen cylinder is rotatably installed in the outer fixing cylinder and attached to the inner cylinder wall of the outer fixing cylinder. And two grinding rollers which are horizontally distributed in parallel and are communicated to the interior of the screen drum are installed on the drum wall of the left end in the outer fixing drum, a synchronous driving mechanism for synchronously driving the two grinding rollers to rotate is installed on the end face of the left side of the exterior of the outer fixing drum, and the right end of the outer fixing drum is not closed and is provided with a drum driving mechanism for driving the internal screen drum to rotate. The concrete recycled aggregate preparation mechanism realizes an efficient and continuous crushing and screening process through a unique structural design and a cooperative working principle of the concrete recycled aggregate preparation mechanism. And through cooperative work of the crushing roller and the screen drum, it is ensured that large-particle materials can be continuously turned over and crushed again, and therefore the quality and uniformity of recycled aggregate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete recycled aggregate preparation, in particular to a high-strength concrete recycled aggregate preparation mechanism. Background Art

[0002] Recycled aggregate is the process of crushing and screening waste concrete to convert it into aggregate that can be reused in concrete production. This technology not only reduces reliance on natural aggregates but also effectively reduces the emission of construction waste, with significant economic and environmental benefits.

[0003] Deficiencies of existing high-strength concrete recycled aggregate preparation mechanisms

[0004] Although the preparation technology of recycled aggregate for high-strength concrete is of great significance, the existing preparation mechanism still has some shortcomings in practical application:

[0005] Low crushing efficiency:

[0006] Existing preparation mechanisms are often inefficient at crushing larger concrete blocks. Due to inadequate crushing equipment design, some materials cannot be fully crushed, affecting the quality and uniformity of the recycled aggregate.

[0007] Poor screening effect:

[0008] Traditional straight-cylinder crushing devices are prone to accumulation and clogging, which results in some larger particles of materials that have not been crushed in the early stage being unable to be effectively screened, affecting the particle size distribution of the recycled aggregate. Utility Model Content

[0009] (1) Technical problems solved

[0010] In view of the deficiencies in the prior art, the utility model provides a high-strength concrete recycled aggregate preparation mechanism to solve the above problems.

[0011] (2) Technical solution

[0012] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength concrete recycled aggregate preparation mechanism, comprising a transversely horizontally distributed external fixed cylinder, a screen cylinder rotatably installed on the inner cylinder wall of the external fixed cylinder, two horizontally parallel crushing rollers that lead to the interior of the screen cylinder are installed on the left end cylinder wall of the internal part of the external fixed cylinder, a synchronous driving mechanism that synchronously drives the two crushing rollers to rotate is installed on the left end surface of the external part of the external fixed cylinder, and the right end of the external fixed cylinder is not closed and is equipped with a roller driving mechanism that drives the internal screen cylinder to rotate.

[0013] Preferably, the synchronous drive mechanism specifically includes the following structure:

[0014] A motor mounting bracket mounted on the left end surface of the outer fixing cylinder;

[0015] A first reduction motor mounted on a motor mounting bracket;

[0016] A first driving gear connected to the output end of the first reduction motor;

[0017] a driving shaft connected to the left ends of the two crushing rollers respectively;

[0018] The transmission gears are respectively connected to one end of the outer sides of the two drive shafts, and the two transmission gears are meshed with each other, and the first drive gear is meshed with the right transmission gear.

[0019] Preferably, the transmission ratio between the first driving gear and the transmission gear is set to 3:1.

[0020] Preferably, a plurality of sieve holes are evenly arranged on the sieve drum, and a plurality of material-moving columns are evenly arranged on the inner wall of the sieve drum.

[0021] Preferably, the roller driving mechanism specifically includes the following structure:

[0022] A second reduction motor installed above the right side port of the outer fixed cylinder;

[0023] A second driving gear connected to the output end of the second reduction motor;

[0024] The transmission gear ring is docked on the right port of the screen drum, and the second driving gear is meshed with the transmission gear ring.

[0025] Preferably, a discharge port is provided at the bottom of the outer fixed cylinder.

[0026] Preferably, brackets are installed on the left and right ends of the bottom of the outer fixed cylinder, and a feed ramp is installed on the right side of the right bracket through an inclined support, and the left end of the feed ramp leads to the right port of the screen cylinder.

[0027] Compared with the prior art, the present invention provides a high-strength concrete recycled aggregate preparation mechanism, which has the following beneficial effects:

[0028] Highly efficient crushing and re-crushing capabilities:

[0029] This recycled concrete aggregate preparation mechanism uses the coordinated work of the crushing roller and screen drum to effectively initially crush larger concrete blocks. The tumbling and re-crushing operations within the screen drum ensure that all materials reach the required particle size. This design significantly improves crushing efficiency and reduces material waste.

[0030] Continuous turning and re-crushing:

[0031] The ingenious design of the material-discharging column inside the screen drum continuously flips the larger particles upwards, allowing them to contact the crushing rollers again for processing. This continuous flipping and re-crushing operation ensures that all materials are fully crushed, avoiding material accumulation and the residue of uncrushed particles, thereby improving the quality and uniformity of the recycled aggregate.

[0032] Automation and efficient screening:

[0033] Precisely controlled by the drum drive and synchronous drive mechanisms, the screen drum rotates continuously, ensuring that the material is constantly tumbled by the paddles on the inner wall of the screen drum, improving screening efficiency. Smaller particles quickly pass through the screen apertures and enter the discharge port, while larger particles continue to tumble within the screen drum until they reach the desired particle size. This automated and efficient screening process significantly reduces manual intervention and improves production efficiency.

[0034] This recycled concrete aggregate preparation mechanism achieves efficient and continuous crushing and screening through its unique structural design and collaborative working principle. The coordinated operation of the crushing roller and screen drum ensures that larger particles are continuously turned and re-crushed, thereby improving the quality and uniformity of the recycled aggregate. The precise control of the synchronous drive mechanism and the drum drive mechanism further enhances the efficiency of crushing and screening, reducing material waste. Overall, this recycled concrete aggregate preparation mechanism offers significant advantages in improving the quality and production efficiency of recycled aggregates, providing strong technical support for the sustainable utilization of concrete waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the utility model;

[0036] Figure 2 This is a schematic diagram of explosion separation of the utility model;

[0037] Figure 3 This is a structural diagram of the synchronous drive mechanism of the utility model;

[0038] Figure 4 This is a structural diagram of the roller drive mechanism of the utility model.

[0039] Among them: 1. External fixed cylinder; 2. Bracket; 3. Crushing roller; 4. Synchronous drive mechanism; 5. Screen drum; 6. Drum drive mechanism; 7. Feed ramp;

[0040] 11. Discharge port;

[0041] 41. Motor mounting bracket; 42. First reduction motor; 43. First drive gear; 44. Transmission gear; 45. Drive shaft;

[0042] 51. Sieve hole; 52. Material shifting column;

[0043] 61. Second reduction motor; 62. Second driving gear; 63. Transmission gear ring;

[0044] 71. Inclined pillar. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is apparent that the embodiments described are only a portion of the embodiments of the utility model, not all of them. The embodiments and features in the embodiments of this application may be combined with each other unless there is a conflict. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the utility model without creative effort are also within the scope of protection of the utility model.

[0046] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0047] In addition, "multiple" means more than two. Furthermore, the technical solutions of the various embodiments may be combined with each other, but this must be based on the premise that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions is mutually inconsistent or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0048] See also Figure 1-4 , a high-strength concrete recycled aggregate preparation mechanism:

[0049] Structural composition:

[0050] The main components of this recycled concrete aggregate production mechanism include an external fixed drum 1, a screen drum 5, crushing rollers 3, a synchronous drive mechanism 4, and a roller drive mechanism 6. The external fixed drum 1 serves as the outer shell of the entire device, securing and supporting the internal components and ensuring the stability of the internal structure. The right end of the external fixed drum 1 is connected to the roller drive mechanism 6, which drives the screen drum 5. Two crushing rollers 3 are located at the left end of the external fixed drum 1 for the initial crushing of larger concrete blocks.

[0051] Crushing system:

[0052] The two crushing rollers 3 installed at the left end of the outer fixed cylinder 1 are the core device for initially crushing the large pieces of concrete entering the device. The two crushing rollers 3 are arranged horizontally and parallel, with a certain gap between them, so that the large pieces of material can be effectively crushed.

[0053] The synchronous drive mechanism 4 ensures the synchronized operation of the two crushing rollers 3. This mechanism achieves power transmission through a motor-driven gear transmission. A reduction motor 42 is used to control the speed of the crushing rollers, ensuring a smooth and efficient crushing process. The precise meshing between the transmission gear 44 and the drive shaft 45 ensures that the two crushing rollers rotate in opposite directions, further increasing the crushing force and preventing material from slipping and not being crushed.

[0054] Screening system:

[0055] The sieve drum 5 is a crucial component of the device for separating recycled aggregate. Its evenly distributed mesh holes 51 enable separation of crushed material into different particle sizes. After crushing, the material enters the sieve drum 5. As the sieve drum 5 rotates, the material is continuously tumbled by the diverter pins 52 on its inner wall, ensuring full contact with the sieve holes and improving screening efficiency. The diverter pins are designed to prevent material from accumulating at the bottom of the sieve drum while simultaneously tilting larger particles upward for processing by the crushing rollers 3.

[0056] As the screen drum 5 rotates, smaller particles pass through the screen holes and enter the lower discharge port 11 and are transported to the collection area, while larger unscreened materials continue to tumble in the screen drum until they are further crushed and reach a suitable particle size.

[0057] Drum drive system:

[0058] The rotation of the sieve drum 5 is controlled by a drum driving mechanism 6 , which includes a second reduction motor 61 installed above the right port of the outer fixed drum 1 , which engages with a transmission gear ring 63 at the right end of the sieve drum through a second driving gear 62 to realize the rotation of the sieve drum 5 .

[0059] Discharging system:

[0060] A discharge port 11 is provided at the bottom of the external fixed cylinder 1, through which the sieved recycled aggregate meeting the requirements is discharged.

[0061] Support and feeding system:

[0062] Two brackets 2 are mounted at the bottom of the outer fixed cylinder 1, supporting the entire device and ensuring stability during operation. The right bracket 2 supports a feed ramp 7 via a diagonal support 71. This ramp is used to feed concrete waste into the right end of the screen drum 5. The slope of the feed ramp has been precisely calculated to ensure smooth entry of the material into the screen drum 5.

[0063] Working principle:

[0064] Feeding: Concrete waste enters the right port of the screen drum 5 from the feeding ramp 7 on the right.

[0065] Crushing: Larger concrete blocks are crushed into smaller particles after being crushed by the crushing rollers 3. The synchronous drive mechanism 4 ensures the synchronous operation of the two crushing rollers 3, improving the crushing efficiency and avoiding uneven crushing.

[0066] Screening: The crushed material enters the screen drum 5. With the rotation of the screen drum 5 and the push of the material-selecting column 52, the material keeps tumbling and gradually passes through the screen holes 51 for screening. Aggregates that meet the particle size requirements fall into the discharge port 11 through the screen holes, while aggregates that do not meet the requirements continue to tumble in the screen drum until they are of the right size and are discharged through the screen holes.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0069] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-strength concrete recycled aggregate preparation mechanism, comprising a horizontally distributed external fixed cylinder (1), characterized in that: A screen drum (5) is rotatably mounted on the inner wall of the outer fixed cylinder (1), and two horizontally parallel crushing rollers (3) are mounted on the left end wall of the inner wall of the outer fixed cylinder (1) and are connected to the inner wall of the screen drum (5). A synchronous driving mechanism (4) for synchronously driving the two crushing rollers (3) to rotate is mounted on the left end face of the outer side of the outer fixed cylinder (1), and the right end of the outer fixed cylinder (1) is not closed and is mounted with a roller driving mechanism (6) for driving the inner screen drum (5) to rotate.

2. The high-strength concrete recycled aggregate preparation mechanism according to claim 1, characterized in that: The synchronous drive mechanism (4) specifically includes the following structure: A motor mounting bracket (41) mounted on the outer left end surface of the outer fixed cylinder (1); a first reduction motor (42) mounted on the motor mounting frame (41); a first driving gear (43) connected to the output end of the first reduction motor (42); a driving shaft (45) connected to the left ends of the two crushing rollers (3); The transmission gears (44) are respectively connected to one end of the outer sides of the two driving shafts (45), and the two transmission gears (44) are meshed with each other. The first driving gear (43) is meshed with the right transmission gear (44).

3. The high-strength concrete recycled aggregate preparation mechanism according to claim 2, characterized in that: The transmission ratio between the first driving gear (43) and the transmission gear (44) is set to 3:

1.

4. The high-strength concrete recycled aggregate preparation mechanism according to claim 1, characterized in that: A plurality of sieve holes (51) are evenly arranged on the sieve cylinder (5), and a plurality of material-moving columns (52) are evenly arranged on the inner wall of the sieve cylinder (5).

5. The high-strength concrete recycled aggregate preparation mechanism according to claim 1, characterized in that: The roller driving mechanism (6) specifically includes the following structure: a second reduction motor (61) mounted above the right side port of the outer fixed cylinder (1); a second driving gear (62) connected to the output end of the second reduction motor (61); The second driving gear (62) is connected to the transmission gear ring (63) on the right end of the screen drum (5), and the second driving gear (62) is meshed with the transmission gear ring (63).

6. The high-strength concrete recycled aggregate preparation mechanism according to claim 1, characterized in that: A discharge port (11) is provided at the bottom of the outer fixed cylinder (1).

7. The high-strength concrete recycled aggregate preparation mechanism according to claim 1, characterized in that: The left and right ends of the bottom of the outer fixed cylinder (1) are both equipped with brackets (2), and a feed ramp (7) is installed on the right side of the bracket (2) via an inclined support (71), and the left end of the feed ramp (7) is connected to the right end of the screen cylinder (5).

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