A multi-stage asphalt mixture screening device

Abstract

The utility model provides a kind of asphalt mixture multistage screening device, belong to asphalt mixture multistage screening device technical field, comprising: base, first support rack, second support rack, screen frame, support seat, spring support seat, fixed crossbeam, secondary damping rubber block, floating crossbeam, relaxation sieve plate, exciter group, screen and control box, the top left side of base is fixedly connected with first support rack by bolt, the utility model is equipped with three groups of screen by being installed in the inboard of relaxation sieve plate, three layers of screen are respectively coarse sieve, middle sieve and fine sieve, three layers of screen with different aperture can carry out multistage screening, the rotation axis line between exciter group is parallel to each other, and with the relaxation sieve plate at the end of inlet and outlet is inclined, so that material reaches the end of outlet carries out large vibration amplitude, the projectile force obtained by material is big, can further increase screening intensity when discharging, improve screening quality.

Description

Technical Field

[0001] This utility model relates to the field of engineering material processing equipment technology, and in particular to a multi-stage screening device for asphalt mixture. Background Technology

[0002] Asphalt mixture is a mineral mixture composed of coarse aggregate, fine aggregate, filler, and asphalt binder according to a specific gradation. Multi-stage screening of asphalt mixture refers to the process of separating asphalt mixture through multiple screening stages. The main purpose of multi-stage screening is to ensure a uniform particle size distribution in the asphalt mixture, meeting the quality requirements of road construction. Through multi-stage screening, excessively large or small particles can be removed, ensuring the uniformity and stability of the mixture, thereby improving the durability and service performance of the road.

[0003] In existing technologies, asphalt mixture screening often uses single-layer vibrating screens or manual screening, which has problems such as low efficiency, easy clogging, and inaccurate grading. In addition, traditional vibration mechanisms cannot specifically solve the problem of slow flow rate caused by the viscosity of asphalt mixtures. Although the vibrator is placed in the middle of the screen frame to make the screen frame structure compact and the force even, the flow rate of the material is low when it reaches the tension screen plate from the feed inlet. The material moves slowly on the tension screen plate, resulting in slow screening speed and affecting screening efficiency.

[0004] Therefore, this application provides a multi-stage screening device for asphalt mixtures to meet the requirements. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a multi-stage screening device for asphalt mixture.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A multi-stage screening device for asphalt mixture includes: a base, a first support frame, a second support frame, a screen frame, a support seat, a spring support seat, a fixed crossbeam, secondary vibration damping rubber blocks, a floating crossbeam, a tension screen plate, a vibrator assembly, a screen mesh, and a control box. The first support frame is bolted to the top left side of the base, and the second support frame is bolted to the top right side of the base. The screen frame is mounted on the inner side of the first and second support frames via spring support seats, and spring supports are mounted on the outer side of the screen frame. The frame includes a support base at the bottom of the spring support base, a fixed crossbeam at the upper inner end of the screen frame via bolts, a secondary vibration damping rubber block embedded at the lower inner end of the screen frame, a floating crossbeam at the upper end of the secondary vibration damping rubber block via bolts, a tension screen plate between the fixed crossbeam and the floating crossbeam, a vibrator assembly inside the screen frame, a screen mesh on the inner side of the tension screen plate via bolt clips, mounting bases welded to the corners of the screen mesh, and a control box mounted on the side of the second support frame via bolts.

[0008] Preferably, the right end of the screen frame is integrally provided with a feed inlet, the left end of the screen frame is integrally provided with a discharge outlet, and the inside of the screen frame is integrally provided with a guide plate located at the feed inlet.

[0009] Preferably, the control box is electrically connected to the vibrator assembly via wires.

[0010] Preferably, the vibrator group is provided in two sets, which are respectively set at the upper and lower ends of the tension sieve plate, and the two sets of vibrator groups are respectively set at the openings on both sides of the tension sieve plate.

[0011] Preferably, the rotation axes of the vibrators are parallel to each other and inclined to the tension screen plates at the feed inlet and discharge outlet.

[0012] Preferably, the height of the second support frame is greater than the height of the first support frame, and the screen frame is inclined downward through the first support frame and the second support frame.

[0013] Preferably, the guide plate is inclined at 30° and the opening of the guide plate is in communication with the tension screen plate.

[0014] Preferably, the inner side of the tension sieve plate is equipped with three sets of sieves, namely a coarse sieve, a medium sieve, and a fine sieve.

[0015] Preferably, the three sets of screens in the tension screen plate are arranged in a stepped inclined manner, and the inclination angle of the three sets of screens gradually increases from top to bottom.

[0016] Preferably, the vibration direction of the eccentric vibration motor of the vibrator group forms a 30° angle with the screen surface of the screen.

[0017] In the above scheme, three sets of screens are installed on the inner side of the tension screen plate. The three layers of screens are coarse, medium and fine screens, respectively. The three layers of screens with different apertures can perform multi-stage screening. The rotation axis of the vibrator group is parallel to each other and inclined to the tension screen plate at the feed port and discharge port. This makes the material at the discharge port vibrate with a large amplitude and the material has a large projectile force, which can further increase the screening force and improve the screening quality during discharge.

[0018] In the above scheme, by setting three sets of screens in the tension screen plate in a stepped inclined arrangement, the inclination angle of the three sets of screens gradually increases from top to bottom. Due to the principle of gravity, the material rolls downward through the three sets of screens and is vertically driven to vibrate the tension screen plate at the feed inlet by the vibrator group. The eccentric vibration motor of the vibrator group drives the screen surface of the screen to perform three-dimensional elliptical vibration. The vibration direction is at a 30° angle with the screen surface, which can enhance the rolling of the material and accelerate the flow of the material by using gravity, so that the material screening through the tension screen plate is faster, which is conducive to increasing the screening speed and improving the screening efficiency. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the sieve frame of this utility model;

[0022] Figure 3 This is a schematic diagram of the specific connection structure between the secondary vibration damping rubber block and the floating crossbeam of this utility model.

[0023] Figure 4 This is a schematic diagram of the specific structure of the screen of this utility model.

[0024] [Figure Labels]

[0025] 1-Base; 2-First support frame; 3-Second support frame; 4-Screen frame; 5-Support seat; 6-Spring support seat; 7-Fixed crossbeam; 8-Secondary vibration damping rubber block; 9-Floating crossbeam; 10-Tension screen plate; 11-Vibrator group; 12-Screen mesh; 13-Control box; 401-Inlet; 402-Outlet; 403-Guide plate; 1201-Mounting seat.

[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4The multi-stage screening device for asphalt mixture shown in this embodiment includes: a base 1, a first support frame 2, a second support frame 3, a screen frame 4, a support seat 5, a spring support seat 6, a fixed crossbeam 7, a secondary vibration damping rubber block 8, a floating crossbeam 9, a tension screen plate 10, a vibrator assembly 11, a screen mesh 12, and a control box 13. The first support frame 2 is bolted to the top left side of the base 1, and the second support frame 3 is bolted to the top right side of the base 1. The screen frame 4 is mounted on the inner side of the first support frame 2 and the second support frame 3 via the spring support seat 6. The side of the screen frame 4... A spring support seat 6 is installed at the outer end, and a support seat 5 is installed at the bottom of the spring support seat 6. A fixed crossbeam 7 is installed at the upper inner end of the screen frame 4 by bolts. A secondary vibration damping rubber block 8 is embedded at the lower inner end of the screen frame 4. A floating crossbeam 9 is installed at the upper end of the secondary vibration damping rubber block 8 by bolts. A tension screen plate 10 is installed between the fixed crossbeam 7 and the floating crossbeam 9. A vibrator assembly 11 is installed inside the screen frame 4. A screen mesh 12 is installed on the inner side of the tension screen plate 10 by bolts. A mounting seat 1201 is welded to the corner of the screen mesh 12. A control box 13 is installed on the side of the second support frame 3 by bolts.

[0030] In this embodiment, the right end of the screen frame 4 is integrally provided with a feed inlet 401, the left end of the screen frame 4 is integrally provided with a discharge outlet 402, and the inside of the screen frame 4 is integrally provided with a guide plate 403 located at the feed inlet 401.

[0031] In this embodiment, the control box 13 is electrically connected to the vibrator group 11 via wires. An external power source provides power to the control box 13 and the vibrator group 11, and the control box 13 controls the vibrator group 11.

[0032] In this embodiment, two sets of vibrators 11 are provided, which are respectively set at the upper and lower ends of the tension screen plate 10. The two sets of vibrators 11 are respectively set at the openings on both sides of the tension screen plate 10. The vibrators 11 generate a vibration force parallel to the tension screen plate 10. While driving the tension screen plate 10 to vibrate linearly, the floating crossbeam 9 makes linear reciprocating motion under the action of vibration inertia force and secondary damping rubber block 8. The floating crossbeam 9 drives the tension screen plates 10 on both sides to form a tensioning and relaxing motion, which relaxes and throws the material on the screen surface for screening.

[0033] In this embodiment, the rotation axes of the vibrators 11 are parallel to each other and inclined to the tension screen 10 at the feed inlet 401 and the discharge outlet 402, so that the material reaching the discharge outlet 402 undergoes a large vibration amplitude, and the material receives a large projectile force, which can further increase the screening force and improve the screening quality during discharge.

[0034] In this embodiment, the height of the second support frame 3 is greater than the height of the first support frame 2, and the screen frame 4 tilts downward through the first support frame 2 and the second support frame 3.

[0035] In this embodiment, the guide plate 403 is inclined at 30°, and the guide plate 403 is in communication with the opening of the tension screen plate 10.

[0036] In this embodiment, three sets of screens 12 are installed on the inner side of the tension sieve plate 10. The three layers of screens are coarse sieve, medium sieve and fine sieve, respectively. The three layers of screens 12 with different apertures can perform multi-stage screening.

[0037] In this embodiment, the three sets of screens 12 inside the tension screen plate 10 are arranged in a stepped inclined manner, and the inclination angle of the three sets of screens 12 gradually increases from top to bottom. Due to the principle of gravity, the material rolls downward through the three sets of screens 12 and is vertically driven to vibrate the tension screen plate 10 at the feed inlet 401 by the vibrator group 11. Gravity can be used to accelerate the flow of material, making the screening of material through the tension screen plate 10 faster, which is conducive to increasing the screening speed and improving the screening efficiency.

[0038] In this embodiment, the vibration direction of the eccentric vibration motor of the vibrator group 11 is at a 30° angle to the screen surface of the screen 12. The eccentric vibration motor of the vibrator group 11 drives the screen surface of the screen 12 to perform three-dimensional elliptical vibration, and the vibration direction is at a 30° angle to the screen surface, which can enhance the tumbling of materials.

[0039] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-stage screening device for asphalt mixtures, characterized in that, Include: Base (1), first support frame (2), second support frame (3), screen frame (4), support seat (5), spring support seat (6), fixed beam (7), secondary damping rubber block (8), floating beam (9), relaxation screen plate (10), vibrator group (11), screen (12) and control box (13), the top left side of the base (1) is fixedly connected with the first support frame (2) through the bolt, the top right side of the base (1) is fixedly connected with the second support frame (3) through the bolt, the inner side of the first support frame (2) and the second support frame (3) is provided with the screen frame (4) through the spring support seat (6), the outer end of the side of the screen frame (4) is provided with the spring support seat (6), the bottom of the spring support seat (6) is provided with the support seat (5), the inner upper end of the screen frame (4) is provided with the fixed beam (7) through the bolt, the lower end of the screen frame (4) is embeddedly provided with the secondary damping rubber block (8), the upper end of the secondary damping rubber block (8) is provided with the floating beam (9) through the bolt, the fixed beam (7) and the floating beam (9) are provided with the relaxation screen plate (10), the inner side of the screen frame (4) is provided with the vibrator group (11), the inner side of the relaxation screen plate (10) is provided with the screen (12) through the bolt buckle, the end corner of the screen (12) is welded with the mounting seat (1201), the side of the second support frame (3) is provided with the control box (13) through the bolt.

2. The multi-stage asphalt mixture screening apparatus of claim 1, wherein: The right end of the screen frame (4) is integrally provided with the feeding port (401), the left end of the screen frame (4) is integrally provided with the discharge port (402), the inner side of the screen frame (4) is integrally provided with the guide plate (403) at the feeding port (401).

3. The multi-stage asphalt mixture screening apparatus of claim 1, wherein: The control box (13) is electrically connected between the vibrator group (11) through the wire.

4. The multi-stage asphalt mixture screening apparatus of claim 1, wherein: The vibrator group (11) is provided with two groups, which are arranged at the upper and lower ends of the relaxation screen plate (10), and the two groups of vibrator groups (11) are arranged at the two side openings of the relaxation screen plate (10).

5. The multi-stage asphalt mixture screening apparatus of claim 1 or 2, wherein: The rotation axis lines between the vibrator groups (11) are parallel to each other, and are inclined to the relaxation screen plate (10) at the feeding port (401) and the discharge port (402) end.

6. The multi-stage asphalt mixture screening apparatus of claim 1, wherein: The height of the second support frame (3) is greater than the height of the first support frame (2), and the screen frame (4) is inclined downward through the first support frame (2) and the second support frame (3).

7. The multi-stage asphalt mixture screening apparatus of claim 2, wherein: The guide plate (403) is inclined by 30°, and the guide plate (403) is communicated with the opening of the relaxation screen plate (10).

8. The multi-stage asphalt mixture screening apparatus of claim 1, wherein: The inner side of the relaxation screen plate (10) is provided with three groups of screen (12), and the three layers of screen are coarse screen, medium screen and fine screen.

9. The multi-stage asphalt mixture screening apparatus of claim 8, wherein: The three groups of screen (12) in the relaxation screen plate (10) are arranged in a stepped inclined manner, and the inclination angles of the three groups of screen (12) gradually increase from top to bottom.

10. The multi-stage asphalt mixture screening apparatus of claim 1, wherein: The eccentric vibration motor vibration direction of the vibrator group (11) and the screen surface of the screen (12) form an angle of 30°.

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