Pavement recycled material screening and crushing device

Abstract

The utility model relates to the technical field of screening and crushing, and discloses a pavement recycled material screening and crushing device which comprises a box body, a circular crushing chamber is fixedly installed at the upper end of the box body, two crushing wheels are installed in the circular crushing chamber, a feeding port and a discharging port are formed in the upper end and the lower end of the circular crushing chamber respectively, and a plurality of screening units are installed in the discharging port. A conveying unit used for conducting returned material smashing on large asphalt blocks is installed in the circular smashing chamber. According to the utility model, asphalt blocks are poured into the circular crushing chamber and crushed by the crushing wheel, the crushed asphalt blocks fall onto the screening unit, the crushed blocks reaching the standard are screened out from the screening unit, and the crushed blocks with larger volume are driven by the conveying unit to rise and fall onto the crushing wheel again to be crushed again until the crushed blocks reach the standard. According to the asphalt crushing device, asphalt is automatically crushed until reaching the standard and then discharged, the crushing efficiency is improved, asphalt blocks which do not reach the standard do not need to be manually and repeatedly fed, the use is more convenient, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening and crushing, in particular to a road surface recycling material screening and crushing device. Background Art

[0002] With the accelerated development of industrialization and the increasing convenience of people's transportation, the number of highways in my country has continued to increase, and asphalt pavement is the main type of highway pavement. However, due to factors such as repeated vehicle loads, vehicle overloading, road construction, and the expiration of service life, asphalt pavements can no longer be used, resulting in a large amount of construction waste. Therefore, how to deal with asphalt pavement waste will become a problem that must be faced and solved. In addition, the construction of new roads requires a large amount of aggregates. In addition to economic factors, natural resources are limited and cannot be mined without limit. The recycling of aggregates from old asphalt pavements can save a lot of mineral materials. Therefore, from the perspective of green energy conservation and environmental protection, waste asphalt aggregates need to be further processed to reach the required fine particle level, and the asphalt pavement after processing and screening is paved with different qualities of pavement according to different degrees of asphalt particles.

[0003] Prior art, such as the patent with publication number CN214811564U, discloses an intelligent flexible crushing and screening equipment for waste asphalt mixture, which increases the technical problem of the cost of asphalt and stone when in use. The utility model includes a screening device and a crushing device. The screening device has a leakage port, a guide plate and a crushing wheel from top to bottom. The guide plate and the crushing wheel are located inside the screening device. A screening net is provided below the crushing wheel, a discharge plate is provided below the screening net, and a slope block is provided below the discharge plate. A first discharge port and a second discharge port are provided on the outside of the screening device, the screening net is connected to the second discharge port, the slope block is connected to the first discharge port, and a feed port is provided on the outside of the crushing device. The screening device and the crushing device are connected by a belt transmission device. Used for road engineering machinery, the utility model has the advantages of asphalt recovery processing and reducing the cost of asphalt and stone when using asphalt.

[0004] The existing technology still has shortcomings:

[0005] In the above-mentioned prior art, asphalt blocks are crushed by a crushing wheel, and larger asphalt blocks fall on a screening net and are discharged. In actual use, it is difficult for the crushing wheel to crush the asphalt blocks to the required size in one go, and multiple crushings are required. However, in the prior art, larger asphalt blocks are directly discharged along the screening net, and the discharged asphalt blocks need to be manually reloaded and crushed again until they meet the standards. This is too cumbersome to use, time-consuming and labor-intensive, and the crushing efficiency is low. For this reason, a road recycling material screening and crushing device is proposed. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a road surface recycled material screening and crushing device, which can automatically crush asphalt to meet the standards and improve the crushing efficiency.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a road recycling material screening and crushing device, comprising a box body, a circular crushing chamber is fixedly installed on the upper end of the box body, two crushing wheels are installed in the circular crushing chamber, a feed port and a discharge port are respectively provided at the upper and lower ends of the circular crushing chamber, a plurality of screening units are installed in the discharge port, a conveying unit for recycling and crushing large pieces of asphalt is installed in the circular crushing chamber, the conveying unit comprises a motor installed on the outer wall of the box body and gear rings rotatably connected to both sides of the inner wall of the circular crushing chamber, an output shaft of the motor passes through the box body and is fixedly connected to a turntable, one side of the turntable is fixedly connected to one side of one of the gear rings, a plurality of flaps are installed between the two gear rings, the gear ring drives the screening unit to screen the crushed asphalt blocks, and a discharge port is provided on the lower end side wall of the box body.

[0008] Preferably, the screening unit includes a rotating rod rotatably connected to the discharge port, a plurality of conveying plates are fixedly connected to the outer wall of the rotating rod, and transmission gears are fixedly connected to the outer walls at both ends of the rotating rod. The two transmission gears are respectively meshed with two gear rings, and the multiple screening units located in the discharge port are arranged along the arc of the discharge port.

[0009] Preferably, the outer wall of the conveying tray is provided with two missing corners, and the two missing corners are symmetrically distributed on the conveying tray.

[0010] Preferably, the flaps are distributed obliquely between the two gear rings.

[0011] Preferably, a feed hopper is fixedly mounted on the upper end of the circular crushing chamber, and the feed hopper is connected to the feed port.

[0012] Preferably, an inclined guide block is fixedly mounted on the inner wall of the lower end of the box body, and the inclined surface of the inclined guide block faces the discharge port.

[0013] Preferably, both sides of the circular crushing chamber are provided with clearance grooves, the tooth thickness of the gear ring is smaller than the overall thickness of the gear ring, the teeth on the gear ring are slidably connected in the clearance grooves, and the outer wall of the gear ring away from the teeth is slidably connected to the arc surface of the inner wall of the circular crushing chamber.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model pours asphalt blocks into a circular crushing chamber and crushes them with a crushing wheel. The crushed asphalt blocks fall onto a screening unit, and the crushed blocks that meet the standards are screened out from the screening unit. The crushed blocks that are still larger in volume are driven up by a conveying unit and fall back onto the crushing wheel to be crushed again until they meet the standards. The asphalt is automatically crushed until it meets the standards and then discharged, which improves the crushing efficiency. There is no need to manually repeatedly feed the asphalt blocks that do not meet the standards. It is more convenient to use and has improved practicality.

[0016] 2. The utility model utilizes the rotation of the conveying unit to drive the rotating rod in the screening unit to rotate, the rotating rod drives the conveying disc on its outer wall to rotate, and the conveying disc drives the asphalt blocks falling thereon to move, so that the asphalt blocks that meet the standards are screened out from between adjacent conveying discs, which is convenient for screening, does not require an additional driving source, and reduces costs.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the box body of the utility model;

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 This is a schematic diagram of the position structure of the conveying unit and the circular crushing chamber of the utility model;

[0022] Figure 5 It is a detailed structural schematic diagram of the conveying unit of the utility model;

[0023] Figure 6 It is a detailed structural schematic diagram of the screening unit of the utility model.

[0024] In the figure: 1. Box body; 2. Circular crushing chamber; 3. Crushing wheel; 4. Feed port; 5. Discharge port; 6. Conveying unit; 61. Gear ring; 62. Flap; 63. Turntable; 64. Motor; 7. Screening unit; 71. Rotating rod; 72. Conveying disc; 73. Transmission gear; 74. Notch; 8. Discharge port; 9. Inclined guide block; 10. Feed hopper; 11. Give way slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6The road recycling material screening and crushing device comprises a box body 1, a circular crushing chamber 2 is fixedly installed on the upper end of the box body 1, two crushing wheels 3 are installed in the circular crushing chamber 2, a feed port 4 and a discharge port 5 are respectively opened at the upper and lower ends of the circular crushing chamber 2, a plurality of screening units 7 are installed in the discharge port 5, a conveying unit 6 for recycling and crushing large pieces of asphalt is installed in the circular crushing chamber 2, the conveying unit 6 comprises a motor 64 installed on the outer wall of the box body 1 and a gear ring 61 rotatably connected to both sides of the inner wall of the circular crushing chamber 2, the output shaft of the motor 64 passes through the box body 1 and is fixedly connected to a turntable 63, one side of the turntable 63 is fixedly connected to one side of one of the gear rings 61, a plurality of flaps 62 are installed between the two gear rings 61, the gear ring 61 drives the screening unit 7 to screen the crushed asphalt blocks, and a discharge port 8 is opened on the lower end side wall of the box body 1.

[0027] like Figure 1 , 2 As shown in Figures 4 and 5, the structure of the crushing device in the utility model is similar to that of the existing crushing device, such as an intelligent flexible crushing and screening device for waste asphalt mixture disclosed in the patent with publication number CN214811564U. The main improvement of the utility model is to realize automatic crushing of asphalt to meet the standards and improve the crushing efficiency; when the road recycled material needs to be crushed, the utility model pours the asphalt blocks from the feed port 4 into the circular crushing chamber 2, and uses a driving source to drive the two crushing wheels 3 to rotate (the driving source is not shown in the figure in the prior art), and the two crushing wheels 3 rotate to crush the asphalt blocks, and the crushed asphalt blocks fall to the screening unit 7 for screening, and the qualified asphalt blocks fall from the discharge port 5, and the unqualified asphalt blocks The green block is still in the circular crushing chamber 2, and the motor 64 is started. The motor 64 drives the turntable 63 to rotate, and the turntable 63 drives the two gear rings 61 and multiple flaps 62 to rotate. The flaps 62 rotate along the inner wall of the circular crushing chamber 2, so that the flaps 62 gradually bring the substandard asphalt blocks below the circular crushing chamber 2 along the inner wall of the circular crushing chamber 2 until the asphalt blocks are directly above the crushing wheel 3. The flaps 62 are in an inclined state, and the asphalt blocks slide from the flaps 62 to the crushing wheel 3 by their own gravity for secondary crushing. This is repeated to achieve automated crushing of the asphalt until it meets the standards and is discharged, thereby improving the crushing efficiency. There is no need to manually repeatedly load the substandard asphalt blocks, making it more convenient to use and improving practicality.

[0028] Among them, the above-mentioned motor 64 can be purchased on the market. It is a mature technology and has been fully disclosed, so it is not repeated in the specification. The motor 64 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power line, and the main controller can be a conventional known device such as a computer that plays a control role.

[0029] like Figure 2 ,6 As shown, the screening unit 7 includes a rotating rod 71 rotatably connected to the discharge port 5, a plurality of conveying discs 72 are fixedly connected to the outer wall of the rotating rod 71, and transmission gears 73 are fixedly connected to the outer walls of both ends of the rotating rod 71, and the two transmission gears 73 are respectively meshed and connected with the two gear rings 61, and the plurality of screening units 7 located in the discharge port 5 are arranged along the arc of the discharge port 5; when the motor 64 drives the two gear rings 61 to rotate, the gear ring 61 drives the transmission gears 73 in the plurality of screening units 7 to rotate, the transmission gears 73 drive the rotating rod 71 to rotate, the rotating rod 71 drives the plurality of conveying discs 72 on its outer wall to rotate, and the conveying discs 72 drive the asphalt blocks fallen thereon to move, so that the qualified asphalt is screened out from the gaps between two adjacent rotating rods 71 ​​and between adjacent conveying discs 72 on the same rotating rod 71, thereby realizing the screening of asphalt materials without the need for an additional driving source, thereby reducing costs.

[0030] like Figure 6 As shown, the outer wall of the conveying disc 72 is provided with two notches 74 , which are symmetrically distributed on the conveying disc 72 ; the notches 74 can drive the asphalt blocks to move, so that the qualified asphalt blocks can move with the rotation of the conveying disc 72 and achieve a screening effect.

[0031] like Figure 2 , 4 As shown in FIG. 5 , the flap 62 is obliquely distributed between the two gear rings 61 ; the obliquely distributed flap 62 can bring the substandard asphalt blocks to the top of the two crushing wheels 3 to avoid falling halfway.

[0032] like Figure 2 , 4 As shown, a feed hopper 10 is fixedly installed at the upper end of the circular crushing chamber 2, and the feed hopper 10 is connected to the feed port 4. The feed hopper 10 can be used to buffer the asphalt poured into the circular crushing chamber 2 to avoid being blocked by the rotating flap 62 and being ejected, thereby improving adaptability.

[0033] like Figure 1 , 2 As shown, an inclined guide block 9 is fixedly installed on the inner wall of the lower end of the box body 1, and the inclined surface of the inclined guide block 9 faces the discharge port 8; the asphalt material discharged from the discharge port 5 falls on the inclined guide block 9, slides along the inclined guide block 9 to the discharge port 8 for easy collection.

[0034] like Figure 2 , 3As shown, both sides of the circular crushing chamber 2 are provided with a clearance groove 11, the tooth thickness of the gear ring 61 is smaller than the overall thickness of the gear ring 61, the teeth on the gear ring 61 are slidably connected in the clearance groove 11, and the outer wall of the gear ring 61 away from the teeth is slidably connected to the arc surface of the inner wall of the circular crushing chamber 2; the teeth on the gear ring 61 are located in the clearance groove 11, so that the arc surface outer wall of the gear ring 61 is tightly fitted with the inner wall of the circular crushing chamber 2 to avoid getting stuck in asphalt fragments and causing the phenomenon of being unable to rotate.

[0035] The implementation steps in this embodiment are as follows: when it is necessary to crush the road recycling material, pour the asphalt block from the feed port 4 into the circular crushing chamber 2, use the driving source to drive the two crushing wheels 3 to rotate, the two crushing wheels 3 rotate to crush the asphalt block, and the crushed asphalt block falls to the screening unit 7, start the motor 64 to work, the motor 64 drives the turntable 63 to rotate, the turntable 63 drives the two gear rings 61 and the multiple flaps 62 to rotate, the gear ring 61 drives the transmission gears 73 in the multiple screening units 7 to rotate, the transmission gear 73 drives the rotating rod 71 to rotate, the rotating rod 71 drives the multiple conveying discs 72 on its outer wall to rotate, and the conveying disc 72 drives the asphalt block falling thereon to move, so that the qualified asphalt is discharged from the adjacent two rotating rods. The gaps between the conveyor plates 71 and between the adjacent conveyor plates 72 on the same rotating rod 71 are screened out to realize the screening of the asphalt material. The qualified asphalt blocks fall from the discharge port 5 to the inclined guide block 9, slide along the inclined guide block 9 to the discharge port 8 for discharge, and the unqualified asphalt blocks are still in the circular crushing chamber 2. The flap 62 rotates along the inner wall of the circular crushing chamber 2, so that the flap 62 gradually brings the unqualified asphalt blocks below the circular crushing chamber 2 up along the inner wall of the circular crushing chamber 2 until the asphalt blocks are directly above the crushing wheel 3. The flap 62 is in an inclined state, and the asphalt blocks slide from the flap 62 to the crushing wheel 3 by their own gravity for secondary crushing. This is repeated to realize the automatic crushing of the asphalt until it meets the standards and is discharged.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A road recycling material screening and crushing device, comprising a box (1), characterized in that: A circular crushing chamber (2) is fixedly mounted on the upper end of the box body (1), two crushing wheels (3) are mounted in the circular crushing chamber (2), a feed inlet (4) and a discharge outlet (5) are respectively provided at the upper end and the lower end of the circular crushing chamber (2), a plurality of screening units (7) are mounted in the discharge outlet (5), a conveying unit (6) for crushing large pieces of asphalt back to the material is mounted in the circular crushing chamber (2), the conveying unit (6) comprises a motor (64) mounted on the outer wall of the box body (1) and a plurality of A gear ring (61) is rotatably connected to both sides of the inner wall of the circular crushing chamber (2); an output shaft of a motor (64) passes through the box body (1) and is fixedly connected to a rotating disk (63); one side of the rotating disk (63) is fixedly connected to one side of one of the gear rings (61); a plurality of flaps (62) are installed between the two gear rings (61); the gear rings (61) drive a screening unit (7) to screen the crushed asphalt blocks; a discharge port (8) is provided on the lower side wall of the box body (1).

2. The road recycling material screening and crushing device according to claim 1, characterized in that: The screening unit (7) comprises a rotating rod (71) rotatably connected to the discharge port (5); a plurality of conveying plates (72) are fixedly connected to the outer wall of the rotating rod (71); transmission gears (73) are fixedly connected to the outer walls at both ends of the rotating rod (71); the two transmission gears (73) are respectively meshed and connected to the two gear rings (61); and the plurality of screening units (7) located in the discharge port (5) are arranged along the arc of the discharge port (5).

3. The road surface recycled material screening and crushing device according to claim 2, characterized in that: The outer wall of the conveying tray (72) is provided with two missing corners (74), and the two missing corners (74) are symmetrically distributed on the conveying tray (72).

4. The road surface recycled material screening and crushing device according to claim 1, characterized in that: The flap (62) is obliquely distributed between the two gear rings (61).

5. The road surface recycled material screening and crushing device according to claim 1, characterized in that: A feed hopper (10) is fixedly mounted on the upper end of the circular crushing chamber (2), and the feed hopper (10) is connected to the feed port (4).

6. The road surface recycling material screening and crushing device according to claim 1, characterized in that: An inclined guide block (9) is fixedly mounted on the inner wall of the lower end of the box body (1), and the inclined surface of the inclined guide block (9) faces the discharge port (8).

7. The road surface recycled material screening and crushing device according to claim 2, characterized in that: Both sides of the circular crushing chamber (2) are provided with clearance grooves (11); the thickness of the teeth of the gear ring (61) is smaller than the overall thickness of the gear ring (61); the teeth on the gear ring (61) are slidably connected in the clearance grooves (11); and the outer wall of the gear ring (61) away from the teeth is slidably connected to the arc surface of the inner wall of the circular crushing chamber (2).

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