Asphalt premix aggregate screening device

Abstract

The utility model discloses an asphalt premix aggregate screening device, which relates to the technical field of vibrating screens and comprises a main frame, a conveyor fixedly mounted at the lower position in the main frame, a blanking hopper fixedly mounted on the main frame above the conveyor, and a vibrating screen movably mounted in the main frame between the conveyor and the blanking hopper. A first mounting plate is fixedly mounted on the vibrating screen, and a motor is fixedly mounted on the first mounting plate. The flow slowing mechanism is arranged in the vibrating screen, the flow slowing mechanism is composed of the mounting rod, the fixing shaft, the lower swing rod, the balancing weight, the flow slowing plate and other components, the flow slowing plate can achieve the buffering effect on aggregate in the vibrating screen through the mounting rod, the fixing shaft, the lower swing rod and the balancing weight, and therefore the screening quality of the aggregate is improved; in addition, the slow flow plate can be automatically ejected open through aggregate gathered on one side of the slow flow plate, so that the discharging efficiency of the aggregate is guaranteed, and due to the arrangement of the lower swing rod and the balancing weight, the follow-in aggregate can be subjected to slow flow again after the aggregate is discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to an asphalt premix aggregate screening device. Background Art

[0002] Asphalt premix aggregate screening is a vital part of road construction, in which the vibrating screen plays a key role. The vibrating screen adopts an efficient vibration principle and can screen asphalt premix aggregate according to particle size. When the vibrating screen is working, the motor drives the screen to generate high-frequency vibration, so that the aggregate is layered and screened on the screen surface, achieving rapid separation;

[0003] For example, the Chinese utility model patent disclosed by publication number CN220258651U: an aggregate screening device. When the application is in use, the extrusion pads are first glued to the left and right sides of the baffle, and then the baffle is inserted into the inside of the slot. When the baffle enters the inside of the slot, the extrusion pads on the left and right sides of the baffle will be squeezed with the slot, so that the baffle is installed on the inner side of the screening device body. When large aggregates roll forward because the aggregate screening device is at an inclined angle, the baffle will block the rolling large aggregates. However, when screening the aggregates, the setting of the baffle will increase the time that the aggregates stay in the screening device body and improve the screening effect of aggregates of different diameters. However, the setting of the structure and the setting of the rubber sheet will make it impossible to achieve continuous screening of the aggregates, thereby reducing the screening amount of the aggregates, that is, the number of screened aggregates per unit time is reduced, thereby reducing the screening efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an asphalt premix aggregate screening device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An asphalt premix aggregate screening device comprises a main frame, a conveyor is fixedly installed at a lower position in the main frame, a lower hopper is fixedly installed on the main frame located above the conveyor, a vibrating screen is movably installed in the main frame located between the conveyor and the lower hopper, a first mounting plate is fixedly installed on the vibrating screen, a motor is fixedly installed on the first mounting plate, and the motor is electrically connected to an external controller through a connecting line, an eccentric weight is movably installed in the vibrating screen located on one side of the first mounting plate, a pulley at one end of the eccentric weight is connected to a pulley at an output end of the motor through a belt, a slow flow mechanism is also provided in the vibrating screen located between the first mounting plate and the eccentric weight, the slow flow mechanism comprises a mounting rod and a slow flow plate, fixed shafts are fixedly installed at both ends of the mounting rod, a lower swing rod is fixedly installed at one end of the fixed shaft, a counterweight block is movably installed at one end of the lower swing rod, and the slow flow plate is movably installed in the mounting rod.

[0007] As a further preferred embodiment of the present invention, second mounting plates are fixedly installed on both sides of the vibrating screen, the second mounting plates are L-shaped, and a bearing seat is fixedly installed on one side of the second mounting plate. The arrangement of the second mounting plate and the bearing seat can ensure that the mounting rod can rotate smoothly.

[0008] As a further preferred embodiment of the present invention, a mounting groove is provided in the mounting rod, and a plurality of first mounting holes are provided on both sides of the mounting groove. The mounting groove is provided in the mounting rod to provide installation conditions for the slow flow plate and adjust the installation height of the slow flow plate.

[0009] As a further preferred embodiment of the present invention, a plurality of second mounting holes are provided in the slow flow plate, the upper end of the slow flow plate is inserted and installed in the mounting groove, and bolts are inserted and installed between the first mounting holes and the corresponding second mounting holes.

[0010] As a further preferred solution of the utility model, the two fixed shafts are rotatably mounted in the corresponding second mounting plate and the first mounting plate respectively, and the slow flow plate is placed in the vibrating screen.

[0011] As a further preferred embodiment of the present invention, a clamp is fixedly installed on the upper end of the lower swing rod, and the clamp is fixedly installed on one end of the corresponding clamp. A retaining spring is clamped on the lower end of the lower swing rod, that is, the counterweight block is inserted and installed on the lower swing rod above the retaining spring. Through the arrangement of two lower swing rods and the counterweight block, the swinging and resetting of the slow flow plate in the vibrating screen can be guaranteed.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses an asphalt premix aggregate screening device, in which a slow flow mechanism is arranged in a vibrating screen, and the slow flow mechanism is composed of a mounting rod, a fixed shaft, a swing rod, a counterweight, a slow flow plate and other components, so that the slow flow plate can buffer the aggregate in the vibrating screen through the mounting rod, the fixed shaft, the swing rod and the counterweight, thereby improving the screening quality of the aggregate, and can also use the aggregates gathered on one side of the slow flow plate to automatically push the slow flow plate open, thereby ensuring the feeding efficiency of the aggregate, and the setting of the swing rod and the counterweight can re-slow the flow of the aggregate entering later after the aggregate is fed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the vibrating screen of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the slow flow mechanism of the utility model;

[0017] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0018] Figure 5 This is a schematic diagram of the installation rod structure of the utility model.

[0019] In the figure: 1. main frame; 2. conveyor; 3. lower hopper; 4. vibrating screen; 5. first mounting plate; 6. motor; 7. eccentric hammer; 8. slow flow mechanism; 9. mounting rod; 10. fixed shaft; 11. swing rod; 12. counterweight; 13. slow flow plate; 14. second mounting plate; 15. bearing seat; 16. mounting groove; 17. first mounting hole; 18. second mounting hole; 19. clamp; 20. retaining spring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 5As shown, the utility model provides an asphalt premix aggregate screening device, including a main frame 1, a conveyor 2 is fixedly installed at the lower position of the main frame 1, a lower hopper 3 is fixedly installed on the main frame 1 located above the conveyor 2, a vibrating screen 4 is movably installed in the main frame 1 between the conveyor 2 and the lower hopper 3, a first mounting plate 5 is fixedly installed on the vibrating screen 4, a motor 6 is fixedly installed on the first mounting plate 5, and the motor 6 is electrically connected to an external controller through a connecting line, an eccentric hammer 7 is also movably installed in the vibrating screen 4 located on one side of the first mounting plate 5, a pulley at one end of the eccentric hammer 7 is connected to a pulley at an output end of the motor 6 through a belt, a slow flow mechanism 8 is also arranged in the vibrating screen 4 between the first mounting plate 5 and the eccentric hammer 7, the slow flow mechanism 8 includes a mounting rod 9 and a slow flow plate 13, fixed shafts 10 are fixedly installed at both ends of the mounting rod 9, a lower swing rod 11 is fixedly installed at one end of the fixed shaft 10, a counterweight block 12 is movably installed at one end of the lower swing rod 11, and the slow flow plate 13 is movably installed in the mounting rod 9.

[0022] like Figure 2-Figure 3 As shown, the second mounting plates 14 are fixedly mounted on both sides of the vibrating screen 4, the second mounting plates 14 are L-shaped, and a bearing seat 15 is fixedly mounted on one side of the second mounting plate 14. The second mounting plate 14 and the bearing seat 15 are arranged to ensure that the mounting rod 9 can rotate smoothly.

[0023] like Figure 2-Figure 5 As shown, a mounting groove 16 is provided in the mounting rod 9, and a plurality of first mounting holes 17 are provided on both sides of the mounting groove 16. The mounting groove 16 is provided in the mounting rod 9 to provide mounting conditions for the slow flow plate 13 and to adjust the mounting height of the slow flow plate 13. A plurality of second mounting holes 18 are provided in the slow flow plate 13. The upper end of the slow flow plate 13 is inserted and installed in the mounting groove 16, and bolts are inserted and installed between the first mounting holes 17 and the corresponding second mounting holes 18. The two fixed shafts 10 are divided into The slow flow plate 13 is placed in the vibrating screen 4, and a clamp 19 is fixedly installed on the upper end of the lower swing rod 11, and the clamp 19 is fixedly installed on one end of the corresponding clamp 19. A retaining spring 20 is clamped on the lower end of the lower swing rod 11, that is, the counterweight 12 is inserted and installed on the lower swing rod 11 located above the retaining spring 20. Through the arrangement of the two lower swing rods 11 and the counterweight 12, the swinging and resetting of the slow flow plate 13 in the vibrating screen 4 can be guaranteed.

[0024] It should be noted that the utility model is an asphalt premix aggregate screening device. After the aggregate is dumped into the vibrating screen 4 through the lower hopper 3, the eccentric hammer 7 is driven by the motor 6 to rotate, so that the vibrating screen 4 vibrates, and then the vibrating screen 4 screens the aggregate. Aggregates smaller than the diameter of the screen hole fall onto the conveyor 2 and are transported to other places, while aggregates larger than the diameter of the screen hole move along the inclination direction of the vibrating screen 4 and pass through the slow flow mechanism 8 to slow down the flow, thereby preventing some small-diameter aggregates from being discharged together with large-diameter aggregates due to the presence of more aggregates in the vibrating screen 4. When the aggregate gathered on one side of the slow flow plate 13 reaches a certain weight, gravity will be used to make the aggregate push the slow flow plate 13. Then, the slow flow plate 13 drives the two fixed shafts 10 to rotate in the corresponding bearing seat 15 through the mounting rod 9, and makes the fixed shaft 10 drive the counterweight block 12 to rotate through the swing rod 11. After part of the aggregate passes through the slow flow plate 13 and is discharged to the other side of the vibrating screen 4, when the aggregate gathered in the vibrating screen 4 is not enough to push the slow flow plate 13 open, the gravity of the counterweight block 12 is used to make the fixed shaft 10 and the mounting rod 9 drive the slow flow plate 13 to reset and slow the flow of the aggregate in the vibrating screen 4.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An asphalt premix aggregate screening device, characterized in that: The invention comprises a main frame (1), wherein a conveyor (2) is fixedly installed at a lower position in the main frame (1), a lower hopper (3) is fixedly installed in the main frame (1) located above the conveyor (2), a vibrating screen (4) is movably installed in the main frame (1) located between the conveyor (2) and the lower hopper (3), a first mounting plate (5) is fixedly installed on the vibrating screen (4), a motor (6) is fixedly installed on the first mounting plate (5), and the motor (6) is electrically connected to an external controller via a connecting line, an eccentric weight (7) is movably installed in the vibrating screen (4) located on one side of the first mounting plate (5), a pulley at one end of the eccentric weight (7) is connected to a pulley at an output end of the motor (6) via a belt, and a slow flow mechanism (8) is also provided in the vibrating screen (4) located between the first mounting plate (5) and the eccentric weight (7); The flow-decelerating mechanism (8) comprises a mounting rod (9) and a flow-decelerating plate (13); fixed shafts (10) are fixedly mounted on both ends of the mounting rod (9); a swing rod (11) is fixedly mounted on one end of the fixed shaft (10); a counterweight (12) is movably mounted on one end of the swing rod (11); and the flow-decelerating plate (13) is movably mounted in the mounting rod (9).

2. The asphalt premix aggregate screening device according to claim 1, characterized in that: Second mounting plates (14) are fixedly mounted on both sides of the vibrating screen (4); the second mounting plate (14) is in an L-shaped structure; and a bearing seat (15) is fixedly mounted on one side of the second mounting plate (14).

3. The asphalt premix aggregate screening device according to claim 2, characterized in that: A mounting groove (16) is provided in the mounting rod (9), and a plurality of first mounting holes (17) are provided on both sides of the mounting groove (16).

4. The asphalt premix aggregate screening device according to claim 3, characterized in that: A plurality of second mounting holes (18) are provided in the slow flow plate (13); the upper end of the slow flow plate (13) is inserted and installed in the mounting groove (16); and bolts are inserted and installed between the first mounting holes (17) and the corresponding second mounting holes (18).

5. The asphalt premix aggregate screening device according to claim 1, characterized in that: The two fixed shafts (10) are rotatably mounted in the corresponding second mounting plate (14) and the first mounting plate (5), respectively, and the slow flow plate (13) is placed in the vibrating screen (4).

6. The asphalt premix aggregate screening device according to claim 1, characterized in that: A clamp (19) is fixedly mounted on the upper end of the lower swing rod (11), and the clamp (19) is fixedly mounted on one end of the corresponding clamp (19). A retaining spring (20) is clamped on the lower end of the lower swing rod (11), that is, the counterweight (12) is inserted and mounted on the lower swing rod (11) at a position above the retaining spring (20).

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