Gravel collecting screen for cement stabilized macadam layer

Abstract

The utility model discloses a broken stone collecting sieve for a cement stabilized broken stone layer, and belongs to the technical field of collecting sieves. The gravel collecting screen for the cement stabilized gravel layer comprises an inclined screening barrel, the upper end of the screening barrel is fixedly connected with a fixing ring, and a screening mechanism is arranged in the screening barrel; the screening mechanism comprises a grid cylinder located in the screening cylinder, a plurality of stirring strips are fixedly connected to the inner wall of the grid cylinder, blocking strips on the inner wall of the grid cylinder collide with rotating broken stones, the broken stones move irregularly, the contact opportunity of the broken stones and mesh holes of the grid cylinder is increased, and the broken stones are prevented from falling off. When the grid cylinder rotates, the outer wall blocking strips push the extending strips to compress the springs, after the blocking strips pass through, the springs rebound to drive the extending strips to impact the grid cylinder, the grid cylinder vibrates, the broken stones clamped in the meshes are vibrated off, the meshes are prevented from being blocked, and the screening efficiency and accuracy are improved. And the screening process is ensured to be smooth and uninterrupted.

Description

Technical Field

[0001] This application relates to the field of aggregate screening technology, and more specifically, to a crushed stone aggregate screen for cement-stabilized crushed stone layers. Background Technology

[0002] A crushed stone aggregate sieve for cement-stabilized crushed stone layers is a specialized piece of equipment used during the construction of cement-stabilized crushed stone layers to screen and grade crushed stone aggregates. It uses a screen to filter the size of crushed stone particles, removing particles that do not meet the gradation requirements, ensuring uniform aggregate particle size, and providing qualified raw materials for the strength and stability of the cement-stabilized crushed stone layer.

[0003] In actual use, traditional screening equipment results in a single trajectory for the crushed stone when processing it, insufficient contact between the crushed stone and the screen, and the screen is easily clogged by the crushed stone, leading to a decrease in screening efficiency and insufficient continuity of construction.

[0004] In view of this, this application proposes a crushed stone aggregate screen for cement-stabilized crushed stone layers. Utility Model Content

[0005] The purpose of this application is to provide a crushed stone aggregate screen for cement-stabilized crushed stone layers, which solves the technical problems mentioned in the background art.

[0006] This application provides a crushed stone aggregate screen for cement-stabilized crushed stone layer, including an inclined screen cylinder, a fixing ring fixedly connected to the upper end of the screen cylinder, and a screening mechanism provided inside the screen cylinder;

[0007] The screening mechanism includes a mesh cylinder located inside the screening cylinder. Multiple actuating strips are fixedly connected to the inner wall of the mesh cylinder, and multiple blocking strips are fixedly connected to the outer wall of the mesh cylinder. A pair of fixed frames are fixedly connected to the inner wall of the screening cylinder. An extension strip is slidably inserted into one end of the fixed frame, and multiple springs are fixedly connected between the fixed frame and the extension strip.

[0008] Optionally, an extension plate is fixedly connected to the outer wall of the fixing ring, and a gear block is rotatably connected to one side of the extension plate.

[0009] Optionally, a motor is fixedly connected to the other side of the extension plate, and the output end of the motor is fixedly connected to the gear block.

[0010] Optionally, an extension ring is fixedly connected to the upper end face of the mesh cylinder, and the outer ring of the extension ring is rotatably connected to the inner ring of the fixed ring.

[0011] Optionally, a gear ring is fixedly connected to the upper end of the extension ring, and the gear ring meshes with the gear block.

[0012] Optionally, a discharge frame connected to the inside of the screening cylinder is fixedly connected to the lower part of the outer wall of the screening cylinder, and a discharge pipe connected to the lower part of the lower end of the screening cylinder is fixedly connected to the lower part of the screening cylinder.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] This application utilizes the collision between the obstructing strips on the inner wall of the mesh cylinder and the rotating crushed stone, causing the crushed stone to move irregularly. This increases the contact opportunity between the crushed stone and the mesh openings of the mesh cylinder, allowing crushed stone of the correct size to pass through the mesh openings and fall into the screening cylinder more quickly, improving screening efficiency and accuracy. When the mesh cylinder rotates, the obstructing strips on the outer wall push the extension strips to compress the springs. After the obstructing strips pass, the springs rebound, causing the extension strips to impact the mesh cylinder, generating vibration and dislodging the crushed stone stuck in the mesh openings, preventing mesh blockage and ensuring a smooth and uninterrupted screening process. Crushed stone of the correct size falls through the mesh cylinder into the screening cylinder and is discharged from the discharge frame; larger crushed stone remains in the mesh cylinder and is collected through the discharge pipe, achieving automatic separation of crushed stone of different sizes, facilitating subsequent classification, sorting, and reprocessing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the crushed stone aggregate screen for cement-stabilized crushed stone layer disclosed in the embodiments of this application;

[0016] Figure 2 This is a cross-sectional view of the crushed stone aggregate sieve for cement-stabilized crushed stone layer disclosed in the embodiments of this application;

[0017] Figure 3 This is a schematic diagram of the internal structure of the screening cylinder of the crushed stone aggregate screen for cement-stabilized crushed stone layer disclosed in the embodiments of this application;

[0018] The following are the labels in the diagram: 1. Screening cylinder; 2. Discharge frame; 3. Discharge pipe; 4. Fixing ring; 5. Extension plate; 6. Gear block; 7. Motor; 8. Screening mechanism; 801. Grid cylinder; 802. Extension ring; 803. Gear ring; 804. Actuating bar; 805. Blocking bar; 806. Fixing frame; 807. Extension bar; 808. Spring. Detailed Implementation

[0019] The present application will be further described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1-3This application provides a crushed stone aggregate screen for cement-stabilized crushed stone layers, including an inclined screen cylinder 1. A fixing ring 4 is fixedly connected to the upper end of the screen cylinder 1. A screening mechanism 8 is provided inside the screen cylinder 1. The screening mechanism 8 includes a grid cylinder 801 located inside the screen cylinder 1. Multiple actuating strips 804 are fixedly connected to the inner wall of the grid cylinder 801. The blocking strips 805 on the inner wall of the grid cylinder 801 collide with the rotating crushed stone, causing the crushed stone to move irregularly, increasing the contact opportunity between the crushed stone and the mesh of the grid cylinder 801, allowing crushed stone that meets the specifications to pass through the mesh and fall into the screen cylinder 1 more quickly, thereby improving screening efficiency and accuracy.

[0021] Multiple blocking strips 805 are fixedly connected to the outer wall of the mesh cylinder 801, and a pair of fixed frames 806 are fixedly connected to the inner wall of the screening cylinder 1. An extension strip 807 is slidably inserted into one end of the fixed frame 806. Multiple springs 808 are fixedly connected between the fixed frame 806 and the extension strip 807. When the mesh cylinder 801 rotates, the outer wall blocking strips 805 push the extension strips 807 to compress the springs 808. After the blocking strips 805 pass, the springs 808 rebound and drive the extension strips 807 to hit the mesh cylinder 801, causing it to vibrate and shake off the gravel stuck in the mesh holes, avoiding mesh blockage and ensuring a smooth and uninterrupted screening process.

[0022] An extension plate 5 is fixedly connected to the outer wall of the fixed ring 4. A gear block 6 is rotatably connected to one side of the extension plate 5, and a motor 7 is fixedly connected to the other side of the extension plate 5. The output end of the motor 7 is fixedly connected to the gear block 6. An extension ring 802 is fixedly connected to the upper end face of the mesh cylinder 801. The outer ring of the extension ring 802 is rotatably connected to the inner ring of the fixed ring 4. A gear ring 803 is fixedly connected to the upper end of the extension ring 802. The gear ring 803 meshes with the gear block 6. The motor 7 drives the gear block 6 to rotate. The gear block 6 meshes with the gear ring 803 to transmit power stably to the extension ring 802 and the mesh cylinder 801, ensuring continuous and stable operation of the screening process and reducing the risk of vibration and failure during equipment operation.

[0023] A discharge frame 2, which communicates with the interior of the screening cylinder 1, is fixedly connected to the lower part of the outer wall of the screening cylinder 1. A discharge pipe 3, which communicates with the lower part of the screening cylinder 1, is fixedly connected to the lower part of the lower end of the screening cylinder 1. Crushed stones that meet the specifications fall into the screening cylinder 1 through the grid cylinder 801 and are discharged from the discharge frame 2. Larger crushed stones remain in the grid cylinder 801 and are collected through the discharge pipe 3, realizing the automatic separation of crushed stones of different specifications, which is convenient for subsequent classification, sorting and reprocessing.

[0024] Working principle: When in use, start motor 7. Motor 7 drives the output end to rotate, which in turn drives gear block 6 to rotate. Gear block 6 drives the meshing gear ring 803 to rotate, which in turn drives the extension ring 802 and the mesh cylinder 801 to rotate synchronously. The operator pours the crushed stone to be screened into the mesh cylinder 801. The rotation of the mesh cylinder 801 will cause the crushed stone inside the mesh cylinder 801 to rotate. Multiple blocking strips 805 are fixedly connected to the inner wall of the mesh cylinder 801. The rotating crushed stone will continuously hit the rotating blocking strips 805, thereby changing the trajectory of the movement and causing the crushed stone to move irregularly, thereby speeding up the screening rate. The crushed stone that meets the specifications will pass through the mesh cylinder 801 and fall into the screening cylinder 1. The crushed stone in the screening cylinder 1 will finally be discharged from the discharge frame 2, while the larger crushed stone will remain in the mesh cylinder 801.

[0025] During the rotation of the mesh cylinder 801, multiple blocking strips 805 on the outer wall will rotate. The blocking strips 805 will pass through the extension strips 807 on both sides of the inner wall of the screening cylinder 1. When the blocking strips 805 move, they will push the extension strips 807 into the fixed frame 806. Multiple springs 808 inside the fixed frame 806 will retract. After the blocking strips 805 pass through the extension strips 807, the multiple springs 808 will rebound, causing the extension strips 807 to pop out. The popped extension strips 807 will hit the mesh cylinder 801. After the multiple blocking strips 805 have passed through, the extension strips 807 will continue to hit the mesh cylinder 801, causing the mesh cylinder 801 to vibrate, thereby shaking off the gravel stuck in the mesh holes of the mesh cylinder 801, preventing the holes from clogging and affecting the screening effect. After screening is completed, open the valve of the discharge pipe 3, turn off the motor 7, and collect the larger gravel inside the mesh cylinder 801.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A crushed stone aggregate screen for cement-stabilized crushed stone layers, comprising an inclined screen cylinder (1), characterized in that: The upper end of the screening cylinder (1) is fixedly connected to a fixing ring (4), and the screening mechanism (8) is provided inside the screening cylinder (1). The screening mechanism (8) includes a mesh cylinder (801) located inside the screening cylinder (1). Multiple actuating strips (804) are fixedly connected to the inner wall of the mesh cylinder (801). Multiple blocking strips (805) are fixedly connected to the outer wall of the mesh cylinder (801). A pair of fixed frames (806) are fixedly connected to the inner wall of the screening cylinder (1). An extension strip (807) is slidably inserted into one end of the fixed frame (806). Multiple springs (808) are fixedly connected between the fixed frame (806) and the extension strip (807).

2. The crushed stone aggregate screen for cement-stabilized crushed stone layer according to claim 1, characterized in that: An extension plate (5) is fixedly connected to the outer wall of the fixed ring (4), and a gear block (6) is rotatably connected to one side of the extension plate (5).

3. The crushed stone aggregate screen for cement-stabilized crushed stone layer according to claim 2, characterized in that: A motor (7) is fixedly connected to the other side of the extension plate (5), and the output end of the motor (7) is fixedly connected to the gear block (6).

4. The crushed stone aggregate screen for cement-stabilized crushed stone layer according to claim 3, characterized in that: An extension ring (802) is fixedly connected to the upper end face of the mesh cylinder (801), and the outer ring of the extension ring (802) is rotatably connected to the inner ring of the fixed ring (4).

5. The crushed stone aggregate screen for cement-stabilized crushed stone layer according to claim 4, characterized in that: The upper end of the extension ring (802) is fixedly connected to a gear ring (803), and the gear ring (803) meshes with the gear block (6).

6. The crushed stone aggregate screen for cement-stabilized crushed stone layer according to claim 1, characterized in that: A discharge frame (2) that communicates with the inside of the screen cylinder (1) is fixedly connected to the lower part of the outer wall of the screen cylinder (1), and a discharge pipe (3) that communicates with the lower part of the screen cylinder (1) is fixedly connected to the lower part of the screen cylinder (1).

Images