Aggregate recovery device of belt conveyor

Abstract

The utility model belongs to the technical field of material conveying equipment, and relates to an aggregate recovery device of a belt conveyor, which comprises a main material receiving conveyor, a material returning conveyor and a programmable logic controller (PLC), the main material receiving conveyor is located under the inclined belt conveyor and comprises a first electric roller and a main material receiving belt. The return conveyor is located on the outer side of the flat belt conveyor, the receiving end of the return conveyor is located obliquely below the discharging end of the main receiving conveyor, and the discharging end of the return conveyor is located obliquely above the flat belt conveyor; the material returning conveyor comprises a second electric roller and a material returning belt; the PLC is in communication connection with the two electric rollers; after the first electric roller is started, aggregate falling on the main material receiving belt by the inclined belt conveyor is conveyed to the material returning belt; and after the second electric roller is started, the aggregate on the material returning belt is conveyed to the flat belt conveyor. According to the utility model, the falling aggregate of the belt conveyor can be automatically recovered and reutilized, and the waste of the aggregate and the environmental pollution are reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of material conveying equipment, specifically relating to an aggregate recycling device for a belt conveyor. Background Technology

[0002] In the concrete production process at a batching plant, belt conveyors are typically used to transport aggregates such as sand and small stones. Many belt conveyors consist of a horizontal belt conveyor and an inclined belt conveyor arranged sequentially. The horizontal belt conveyor first transports the aggregates from a lower position horizontally to the inclined belt conveyor, which then tilts the aggregates upwards and transports them to the pre-storage hopper of the mixer at a higher position. It can be understood that a conveyor typically includes an electric drum, a redirecting drum, and a belt wrapped around both. The electric drum is located at the front end of the outgoing belt (the drive end), and the redirecting drum is located at the rear end of the outgoing belt (the driven end). The front end of the outgoing belt is the discharge end of the conveyor, and the rear end is the receiving end.

[0003] Because aggregates such as sand and small stones have a high moisture content, they tend to stick to the belts during transport by flat and inclined belt conveyors. When the belts return, vibration causes the aggregates adhering to the belt surface to fall onto the ground below. Due to the larger conveying angle and greater vibration of inclined belt conveyors, the aggregates mainly fall onto the ground below them. Over time, this results in a buildup of sand and small stones on the ground below the inclined belt conveyors, leading to aggregate waste and environmental pollution.

[0004] Currently, most of the aggregate falling off the belt conveyor is handled manually, with workers shoveling it away next to the conveyor. This is very labor-intensive and carries a high risk of being hit by falling aggregate, resulting in injury or death, and poor work safety. In addition, the working environment at the mixing plant is harsh, making it difficult for workers to adapt to long hours of work, leading to untimely handling of falling aggregate and low work efficiency. Utility Model Content

[0005] In view of the shortcomings of the related technologies, this utility model provides a belt conveyor aggregate recycling device to solve the technical problems mentioned in the background art.

[0006] This utility model provides a belt conveyor aggregate recycling device, which is used in conjunction with a flat belt conveyor and an inclined belt conveyor. The belt conveyor aggregate recycling device includes:

[0007] The main receiving conveyor is located directly below the return belt of the inclined belt conveyor; the main receiving conveyor includes a first electric drum, a first redirecting drum, and a main receiving belt wrapped around both of them; the main receiving belt is used to receive aggregates that fall off the return belt of the inclined belt conveyor.

[0008] The return conveyor is located outside the flat belt conveyor; the receiving end of the return conveyor is located obliquely below the discharge end of the main receiving conveyor and is connected to the discharge end of the main receiving conveyor via a receiving chute; the discharge end of the return conveyor is located obliquely above the flat belt conveyor and is connected to the outgoing belt of the flat belt conveyor via a return chute; the return conveyor includes a second electric drum, a second redirecting drum, and a return belt wrapped around both of them;

[0009] The PLC controller is communicatively connected to both the first and second electric rollers to control their start, stop, and operation. After the first electric roller starts, it drives the main receiving belt to transport the aggregate on the main receiving belt to the return belt via the receiving chute. After the second electric roller starts, it drives the return belt to transport the aggregate on the return belt to the outgoing belt of the flat belt conveyor via the return chute.

[0010] In some embodiments, vibrators are installed on both the receiving chute and the return chute.

[0011] In some embodiments, the main receiving conveyor is arranged horizontally, and the receiving range of the main receiving belt is larger than the vertical projection surface of the inclined belt conveyor.

[0012] In some embodiments, a first weight sensor is installed on the main receiving conveyor to monitor the weight of the aggregate on the main receiving belt; a second weight sensor is installed on the return conveyor to monitor the weight of the aggregate on the return belt.

[0013] The PLC controller is communicatively connected to both the first and second weight sensors to control the operating speed of the first electric roller based on the weight of the aggregate on the main receiving belt and to control the operating speed of the second electric roller based on the weight of the aggregate on the return belt.

[0014] In some embodiments, the belt conveyor aggregate recovery device further includes an auxiliary receiving conveyor located directly below the return belt of the flat belt conveyor; the discharge end of the auxiliary receiving conveyor is higher than the receiving end of the return conveyor and is connected to the return belt via a feeding chute; the auxiliary receiving conveyor includes a third electric drum, a third redirecting drum, and an auxiliary receiving belt wrapped around both of them, the auxiliary receiving belt being used to receive aggregate falling from the return belt of the flat belt conveyor; a PLC controller is communicatively connected to the third electric drum to control the operation of the third electric drum; after the third electric drum starts, it drives the auxiliary receiving belt to rotate, so as to transport the aggregate on the auxiliary receiving belt to the return belt via the feeding chute.

[0015] In some embodiments, vibrators are installed on the receiving chute, the return chute, and the feeding chute.

[0016] In some embodiments, both the main receiving conveyor and the auxiliary receiving conveyor are arranged horizontally; the receiving range of the main receiving belt is larger than the vertical projection of the inclined belt conveyor belt; and the width of the auxiliary receiving belt is larger than the belt width of the flat belt conveyor.

[0017] In some embodiments, a first weight sensor is installed on the main receiving conveyor to monitor the weight of aggregate on the main receiving belt; a second weight sensor is installed on the return conveyor to monitor the weight of aggregate on the return belt; and a third weight sensor is installed on the auxiliary receiving conveyor to monitor the weight of aggregate on the auxiliary receiving belt.

[0018] The PLC controller is communicatively connected to the first, second, and third weight sensors to control the operating speed of the first electric roller based on the weight of the aggregate on the main receiving belt, the operating speed of the second electric roller based on the weight of the aggregate on the return belt, and the operating speed of the third electric roller based on the weight of the aggregate on the auxiliary receiving belt.

[0019] Based on the above technical solution, the aggregate recycling device for belt conveyors in this embodiment of the present invention can automatically collect aggregates that fall off the return belt during the feeding process of the belt conveyor and transport them back to the belt conveyor. This realizes the automatic recycling and reuse of aggregates that fall off the belt conveyor, reduces aggregate waste and environmental pollution, improves the processing efficiency and operational safety of aggregates that fall off the belt conveyor, and greatly reduces the labor intensity and operational risks of manually cleaning up fallen aggregates. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a front view of the aggregate recycling device for a belt conveyor according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a top view of the aggregate recycling device for a belt conveyor according to Embodiment 1 of this utility model;

[0023] Figure 3 This is a front view of the belt conveyor aggregate recycling device according to Embodiment 2 of this utility model;

[0024] Figure 4 This is a top view of the aggregate recycling device for the belt conveyor according to Embodiment 2 of this utility model.

[0025] In the diagram: 11. Flat belt conveyor; 12. Inclined belt conveyor; 13. Electric roller; 14. Idling roller; 15. Belt; 16. Aggregate; 20. Main receiving conveyor; 21. First electric roller; 22. First idling roller; 23. Main receiving belt; 24. Receiving chute; 30. Return conveyor; 31. Second electric roller; 32. Second idling roller; 33. Return belt; 34. Return chute; 40. Auxiliary receiving conveyor; 41. Third electric roller; 42. Third idling roller; 43. Auxiliary receiving belt; 44. Feeding chute. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1:

[0031] refer to Figure 1 , Figure 2As shown, this utility model provides an aggregate recovery device for a belt conveyor, used to process aggregates that fall during the feeding process of the belt conveyor. The belt conveyor includes a flat belt conveyor 11 and an inclined belt conveyor 12 arranged in sequence; the flat belt conveyor 11 and the inclined belt conveyor 12 are respectively installed on the ground by a frame. The flat belt conveyor 11 first transports the aggregates 16 at a lower position horizontally to the inclined belt conveyor 12, and the inclined belt conveyor 12 then tilts the aggregates 16 upwards and transports them to the pre-storage hopper of the mixer at a higher position. It is understood that both the flat belt conveyor 11 and the inclined belt conveyor 12 include an electric drum 13, a redirecting drum 14, and a belt 15 wrapped around both of them; wherein, the electric drum 13 is located at the front end of the belt 15 in the outgoing direction, and the redirecting drum 14 is located at the rear end of the belt 15 in the outgoing direction; the front end of the outgoing belt 15 is the unloading end of the conveyor, and the rear end of the outgoing belt 15 is the receiving end of the conveyor; after the electric drum 13 is started, it drives the belt 15 and the redirecting drum 14 to rotate, thereby realizing the conveying of aggregate 16.

[0032] The belt conveyor aggregate recycling device is used in conjunction with the flat belt conveyor 11 and the inclined belt conveyor 12; the belt conveyor aggregate recycling device includes a main receiving conveyor 20, a return conveyor 30 and a PLC controller.

[0033] The main receiving conveyor 20 is located directly below the return belt 15 of the inclined belt conveyor 12. The main receiving conveyor 20 includes a first motorized drum 21, a first redirecting drum 22, and a main receiving belt 23 wrapped around both; the main receiving belt 23 is used to receive aggregate falling from the return belt 15 of the inclined belt conveyor 12. Further, the first motorized drum 21 is located below the redirecting drum 14 of the inclined belt conveyor 12, and the first redirecting drum 22 is located below the motorized drum 13 of the inclined belt conveyor 12.

[0034] The return conveyor 30 is located outside the flat belt conveyor 11. The receiving end of the return conveyor 30 is located obliquely below the discharge end of the main receiving conveyor 20, and the receiving end of the return conveyor 30 is connected to the discharge end of the main receiving conveyor 20 via a receiving chute 24. The discharge end of the return conveyor 30 is located obliquely above the flat belt conveyor 11, and the discharge end of the return conveyor 30 is connected to the outgoing belt 15 of the flat belt conveyor 11 via a return chute 34. The return conveyor 30 includes a second electric roller 31, a second redirecting roller 32, and a return belt 33 wrapped around both. Further, the second electric roller 31 is located obliquely above the outgoing belt 15 of the flat belt conveyor 11, and the second redirecting roller 32 is located obliquely below the first electric roller 21 of the main receiving conveyor 20.

[0035] The PLC controller is communicatively connected to both the first electric roller 21 and the second electric roller 31 to control their start-up, stop, and operation. Specifically, the PLC controller has a built-in aggregate recycling control program, which pre-sets the start-up and stop times and operating speeds of the first electric roller 21 and the second electric roller 31.

[0036] To further explain, after the first electric drum 21 is started by the PLC controller, the first electric drum 21 rotates and drives the main receiving belt 23 and the first redirecting drum 22 to operate, so as to transport the dropped aggregate received on the main receiving belt 23 to the return belt 33 via the receiving chute 24; after the second electric drum 31 is started by the PLC controller, the second electric drum 31 rotates and drives the return belt 33 and the second redirecting drum 32 to operate, so as to transport the aggregate on the return belt 33 to the outgoing belt 15 of the flat belt conveyor 11 via the return chute 34, and then transport it again to the pre-storage hopper of the mixer via the flat belt conveyor 11 and the inclined belt conveyor 12; this cycle is repeated to realize the recycling and reuse of dropped aggregate from the belt conveyor.

[0037] The above illustrative embodiment, through the setting of the main receiving conveyor 20 and the return conveyor 30 and the application of the PLC controller, can automatically collect the aggregate falling on the return belt 15 of the inclined belt conveyor 12 and transport it back to the belt conveyor, realizing the automatic recycling and reuse of the fallen aggregate. This solves the current problem of dealing with a large amount of fallen aggregate on the ground below the inclined belt conveyor 12, reduces aggregate waste and environmental pollution, improves the processing efficiency and operational safety of fallen aggregate from the belt conveyor, and greatly reduces the labor intensity and operational risks of manually cleaning up fallen aggregate.

[0038] In some embodiments, vibrators (not shown) are installed on both the receiving chute 24 and the return chute 34; the PLC controller is communicatively connected to the vibrator to control its switching. When aggregate is conveyed through the receiving chute 24 or the return chute 34, the vibrator is turned on. The high-frequency vibration of the vibrator can prevent aggregate from accumulating or clogging in the chute, and prevent aggregate from sticking or agglomerating, thus promoting smoother and faster flow of aggregate in the chute.

[0039] refer to Figure 1 , Figure 2 As shown, in some embodiments, the main receiving conveyor 20 is arranged horizontally, and the receiving range of the main receiving belt 23 is larger than the vertical projection surface of the belt 15 of the inclined belt conveyor 12, thereby ensuring that the aggregate falling on the return belt 15 of the inclined belt conveyor 12 can be received more comprehensively by the main receiving belt 23.

[0040] In some embodiments, the main receiving conveyor 20 is equipped with a first weight sensor (not shown) to monitor the weight of aggregate on the main receiving belt 23; the return conveyor 30 is equipped with a second weight sensor (not shown) to monitor the weight of aggregate on the return belt 33. The PLC controller is communicatively connected to both the first and second weight sensors to control the operating speed of the first electric roller 21 based on the weight of aggregate on the main receiving belt 23, and to control the operating speed of the second electric roller 31 based on the weight of aggregate on the return belt 33. Specifically, when the detected aggregate weight is low, the electric roller 13 can operate at a low speed; when the detected aggregate weight is high, the electric roller 13 operates at a medium to high speed; when the detected aggregate weight is excessive or fluctuates abnormally, an alarm is triggered to stop the belt conveyor or aggregate recycling device for inspection or maintenance.

[0041] The above illustrative embodiment can monitor the weight of aggregates on the main receiving belt 23 and the return belt 33 in real time, and intelligently control the operating speed of the first electric roller 21 and the second electric roller 31 accordingly, so as to ensure the timeliness of handling fallen aggregates and reduce the operating cost of the equipment.

[0042] The following is combined Figures 1-2 The main working process of the belt conveyor aggregate recycling device of Embodiment 1 of this utility model is briefly described as follows:

[0043] 1) The belt conveyor starts feeding; specifically, the flat belt conveyor 11 and the inclined belt conveyor 12 start in sequence, and the aggregate 16 at the lower position is conveyed to the inclined belt 15 via the flat belt 15, and then conveyed to the pre-storage hopper of the mixer at the higher position via the inclined belt 15.

[0044] When the belt 15 of the inclined belt conveyor 12 returns, the aggregate adhering to the return belt 15 will fall onto the main receiving belt 23 of the main receiving conveyor 20.

[0045] 2) The PLC controller starts the first electric drum 21 of the main receiving conveyor 20, which drives the main receiving belt 23 to rotate, so as to transport the aggregate on the main receiving belt 23 to the return conveyor 30 through the receiving chute 24; after the first electric drum 21 runs for n1 seconds, the vibrator on the receiving chute 24 is turned on.

[0046] 3) After the first electric roller 21 runs for n2 seconds, the PLC controller starts the second electric roller 31 of the return conveyor 30, which drives the return belt 33 to run, so as to transport the aggregate on the return belt 33 back to the flat belt conveyor 11 via the return chute 34; after the second electric roller 31 runs for n3 seconds, the vibrator on the return chute 34 is turned on.

[0047] 4) After the first electric drum 21 runs for n4 seconds, the PLC controller stops the vibrators on the first electric drum 21 and the receiving chute 24 in sequence; after the second electric drum 31 runs for n5 seconds, the PLC controller stops the vibrators on the second electric drum 31 and the return chute 34 in sequence.

[0048] 5) After the second electric roller 31 stops running for n6 seconds, repeat steps 2)-5) until the belt conveyor stops feeding.

[0049] It should be noted that the specific values ​​of n1, n2, n3, n4, n5, and n6 in the above steps have been preset in the aggregate recycling control program and can be adjusted according to actual needs.

[0050] Example 2:

[0051] Based on Embodiment 1, an auxiliary receiving conveyor 40 is added directly below the return belt 15 of the flat belt conveyor 11 to recycle a small amount of aggregate that falls on the ground below the flat belt conveyor 11, thereby further reducing aggregate waste and environmental pollution during belt conveyor feeding.

[0052] The auxiliary receiving conveyor 40 is located directly below the return belt 15 of the flat belt conveyor 11. The discharge end of the auxiliary receiving conveyor 40 is higher than the receiving end of the return conveyor 30, and the discharge end of the auxiliary receiving conveyor 40 is connected to the return belt 33 via a feeding chute 44. The auxiliary receiving conveyor 40 includes a third electric roller 41, a third redirecting roller 42, and an auxiliary receiving belt 43 wrapped around both of them; the auxiliary receiving belt 43 is used to receive aggregate falling from the return belt 15 of the flat belt conveyor 11. Further, the third electric roller 41 is located below the electric roller 13 of the flat belt conveyor 11, and the third redirecting roller 42 is located below the redirecting roller 14 of the flat belt conveyor 11.

[0053] The PLC controller is communicatively connected to the third electric roller 41 to control its start, stop, and operation. The aggregate recycling control program built into the PLC controller has preset start and stop times and operating speeds for the third electric roller 41. Further, after the third electric roller 41 is started by the PLC controller, it rotates, driving the auxiliary receiving belt 43 and the third redirecting roller 42 to operate. This allows the dropped aggregate received on the auxiliary receiving belt 43 to be conveyed via the feeding chute 44 to the return belt 33, and then to the outgoing belt 15 of the flat belt conveyor 11.

[0054] The above illustrative embodiment, through the setting of the auxiliary receiving conveyor 40 and the application of the PLC controller, can automatically collect the aggregate falling off the return belt 15 of the flat belt conveyor 11 and transport it back to the belt conveyor, realizing the automatic recycling and reuse of the aggregate falling off the flat belt conveyor 11, further reducing aggregate waste and environmental pollution during belt conveyor feeding.

[0055] In some embodiments, a vibrator (not shown) is also installed on the feeding chute 44; the PLC controller controls the switching on and off of the vibrator. When the aggregate is conveyed through the feeding chute 44, the vibrator is turned on. The high-frequency vibration of the vibrator can prevent the aggregate from accumulating or blocking in the chute, and prevent the aggregate from sticking or clumping, thus promoting a smoother and faster flow of the aggregate in the chute.

[0056] To further explain, during the feeding process of the belt conveyor, the PLC controller starts the third electric roller 41 of the auxiliary receiving conveyor 40, driving the auxiliary receiving belt 43 to rotate, so as to convey the aggregate on the auxiliary receiving belt 43 to the return conveyor 30 via the feeding chute 44; after the third electric roller 41 runs for n7 seconds, the vibrator on the feeding chute 44 is turned on; after the third electric roller 41 runs for n8 seconds, the PLC controller sequentially stops the third electric roller 41 and the vibrator on the feeding chute 44; after the third electric roller 41 stops running for n9 seconds, it is restarted, and the above steps are repeated until the belt conveyor stops feeding. The specific values ​​of n7, n8, and n9 are preset in the aggregate recycling control program and can be adjusted according to actual needs.

[0057] refer to Figure 3 , Figure 4 As shown, in some embodiments, the auxiliary receiving conveyor 40 is arranged horizontally; the width of the auxiliary receiving belt 43 is greater than the width of the belt 15 of the flat belt conveyor 11, so as to ensure that the aggregate falling on the return belt 15 of the flat belt conveyor 11 can be received more comprehensively by the auxiliary receiving belt 43.

[0058] In some embodiments, the secondary receiving conveyor 40 is equipped with a third weight sensor (not shown) to monitor the weight of aggregate on the secondary receiving belt 43; the PLC controller is connected in communication with the third weight sensor to control the operating speed of the third electric roller 41 according to the weight of aggregate on the secondary receiving belt 43, so as to ensure the timely handling of fallen aggregate while reducing equipment operating costs.

[0059] In summary, the aggregate recycling device for belt conveyors of this invention, through the configuration of the main receiving conveyor 20, the auxiliary receiving conveyor 40, and the return conveyor 30, and the application of a PLC controller, can automatically collect aggregates that fall off the return belt 15 during the feeding process of the belt conveyor and transport them back to the belt conveyor. This achieves automatic recycling and reuse of aggregates that fall off the belt conveyor. Actual verification shows that the aggregate recycling rate can reach over 85%, reducing aggregate waste and environmental pollution, improving the processing efficiency and operational safety of aggregates that fall off the belt conveyor, and greatly reducing the labor intensity and operational risks of manually cleaning up fallen aggregates.

[0060] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A belt conveyor aggregate recycling device, used in conjunction with a flat belt conveyor and an inclined belt conveyor, characterized in that, The belt conveyor aggregate recycling device includes: The main receiving conveyor is located directly below the return belt of the inclined belt conveyor; the main receiving conveyor includes a first electric drum, a first redirecting drum, and a main receiving belt wrapped around both of them; the main receiving belt is used to receive aggregates that fall off the return belt of the inclined belt conveyor. A return material conveyor is located outside the flat belt conveyor; the receiving end of the return material conveyor is located obliquely below the unloading end of the main receiving conveyor and is connected to the unloading end of the main receiving conveyor via a receiving chute; the unloading end of the return material conveyor is located obliquely above the flat belt conveyor and is connected to the outgoing belt of the flat belt conveyor via a return material chute; the return material conveyor includes a second electric roller, a second redirecting roller, and a return material belt wrapped around both of them; The PLC controller is communicatively connected to both the first and second electric rollers to control their start, stop, and operation. After the first electric roller starts, it drives the main receiving belt to transport the aggregate on the main receiving belt to the return belt via the receiving chute. After the second electric roller starts, it drives the return belt to transport the aggregate on the return belt to the outgoing belt of the flat belt conveyor via the return chute.

2. The aggregate recycling device for a belt conveyor according to claim 1, characterized in that, Both the receiving chute and the return chute are equipped with vibrators.

3. The aggregate recycling device for a belt conveyor according to claim 1, characterized in that, The main receiving conveyor is arranged horizontally, and the receiving range of the main receiving belt is larger than the vertical projection surface of the inclined belt conveyor.

4. The aggregate recycling device for a belt conveyor according to claim 1, characterized in that, The main receiving conveyor is equipped with a first weight sensor to monitor the weight of the aggregate on the main receiving belt; the return conveyor is equipped with a second weight sensor to monitor the weight of the aggregate on the return belt. The PLC controller is communicatively connected to both the first and second weight sensors to control the operating speed of the first electric roller based on the weight of the aggregate on the main receiving belt and to control the operating speed of the second electric roller based on the weight of the aggregate on the return belt.

5. The aggregate recycling device for a belt conveyor according to claim 1, characterized in that, The aggregate recycling device of the belt conveyor also includes an auxiliary receiving conveyor, which is located directly below the return belt of the flat belt conveyor; the discharge end of the auxiliary receiving conveyor is higher than the receiving end of the return conveyor, and is connected to the return belt via a feeding chute; the auxiliary receiving conveyor includes a third electric drum, a third redirecting drum, and an auxiliary receiving belt wrapped around the two, the auxiliary receiving belt being used to receive aggregate falling from the return belt of the flat belt conveyor; the PLC controller is communicatively connected to the third electric drum to control the start, stop, and operation of the third electric drum; after the third electric drum starts, it drives the auxiliary receiving belt to rotate, so as to transport the aggregate on the auxiliary receiving belt to the return belt via the feeding chute.

6. The aggregate recycling device for a belt conveyor according to claim 5, characterized in that, Vibrators are installed on the receiving chute, return chute and feeding chute.

7. The aggregate recycling device for a belt conveyor according to claim 5, characterized in that, Both the main receiving conveyor and the auxiliary receiving conveyor are arranged horizontally; the receiving range of the main receiving belt is larger than the vertical projection of the inclined belt conveyor; the width of the auxiliary receiving belt is larger than the belt width of the flat belt conveyor.

8. The aggregate recycling device for a belt conveyor according to claim 5, characterized in that, The main receiving conveyor is equipped with a first weight sensor to monitor the weight of the aggregate on the main receiving belt; the return conveyor is equipped with a second weight sensor to monitor the weight of the aggregate on the return belt; and the auxiliary receiving conveyor is equipped with a third weight sensor to monitor the weight of the aggregate on the auxiliary receiving belt. The PLC controller is communicatively connected to the first weight sensor, the second weight sensor, and the third weight sensor to control the operating speed of the first electric roller based on the weight of the aggregate on the main receiving belt, the operating speed of the second electric roller based on the weight of the aggregate on the return belt, and the operating speed of the third electric roller based on the weight of the aggregate on the auxiliary receiving belt.

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