A synchronous and precise feeding system for modifiers used in in-situ thermal recycling

Abstract

This utility model relates to the field of feeding machine technology and discloses a synchronous and precise feeding system for modifiers used in on-site thermal recycling. It includes a hollow cylinder with a feeding auger installed inside, a rotating tube, a linkage component, and a striking component. Multiple discharge pipes are connected in a ring array on the rotating tube. When the feeding auger rotates and feeds material to the rotating tube, the linkage component causes the rotating tube to rotate synchronously. The striking component is located outside the hollow cylinder. This utility model, through the cooperation of multiple discharge pipes arranged in a ring array with the linkage component, can drive the rotating tube to rotate synchronously while the feeding auger rotates and feeds material. It can periodically switch the discharge state of the discharge pipes, ensuring that at least one discharge pipe always maintains an effective downward discharge state during operation. This solves the problem of material interruption caused by the upward-facing pipe opening in traditional single-pipe rotating feeding, allowing for uninterrupted modifier feeding throughout the entire process.

Description

Technical Field

[0001] This utility model relates to the field of feeding machine technology, and in particular to a synchronous and precise feeding system for modifiers used in on-site thermal recycling. Background Technology

[0002] In-situ thermal recycling is a technology that uses specialized in-situ thermal recycling equipment to heat and mill asphalt pavement, and mix in a certain amount of new asphalt, new asphalt mixture, and recycling agent on-situ. After hot mixing, paving, and compaction, the asphalt concrete pavement within a certain depth range on the surface is recycled in one go. In-situ thermal recycling technology is widely used in the field of asphalt pavement maintenance.

[0003] Existing equipment, such as the in-situ thermal recycling modifier synchronous feeding machine with authorization announcement number CN215758361U, can feed materials through a feeding auger and rotate the discharge pipe 360 ​​degrees, but it has certain defects in actual use. When the discharge pipe is rotated to face upwards, it is difficult to discharge materials, which can easily lead to material interruption. Secondly, during the feeding process, the modifier is prone to forming an adhesion layer or "bridging" structure in the discharge pipe due to inter-particle forces or moisture agglomeration, which can cause blockage and affect the continuity and accuracy of feeding, making it difficult to meet the requirements of high-quality in-situ thermal recycling construction. Utility Model Content

[0004] This invention proposes a synchronous and precise feeding system for modifiers used in on-site thermal recycling, which solves the problems of material interruption when the discharge pipe is facing upward and the modifier easily caking and clogging the discharge pipe, affecting the continuity and accuracy of feeding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a synchronous and precise feeding system for modifiers used in in-situ thermal recycling, comprising a hollow cylinder with a feeding auger installed inside, and further comprising: A rotating tube is rotatably connected to the end of the hollow cylinder, and multiple discharge tubes are connected in a ring array on the rotating tube; A linkage component is connected between the end of the feeding auger's rotating shaft and the rotating tube. When the feeding auger rotates to feed material to the rotating tube, the linkage component causes the rotating tube to rotate synchronously. A striking component is disposed outside the hollow cylinder. When the rotating tube rotates, the striking component strikes the downward-facing discharge tube.

[0006] Preferably, the linkage component includes: An annular plate, wherein an internal toothed ring is fixed to one end of the inner circumference of the annular plate near the hollow cylinder; An external toothed ring is fixed outside the rotating tube, and the external toothed ring and the internal toothed ring are meshed together.

[0007] Preferably, the linkage component further includes a connector, which consists of a connecting column and multiple support rods. The connecting column is fixed to the end of the rotating shaft of the feeding auger, and the support rods are connected between the connecting column and the annular plate.

[0008] Preferably, the striking component includes: A fixing block is fixed to the lower end of the hollow cylinder by a collar, and a protrusion is fixed on the fixing block; The striking element has one end movably mounted on the protrusion, and the striking element can deflect back and forth by means of the hinge axis of the protrusion.

[0009] Preferably, the striking element includes a movable rod hinged to the protrusion, a striking ball is fixed to the end of the movable rod away from the protrusion, and a return spring is connected between the movable rod and the fixed block.

[0010] Preferably, a first convex ring is fixed to one end of the rotating tube near the hollow cylinder, and a second convex ring is fixed to the outside of the hollow cylinder, with the first convex ring rotatably connected to the second convex ring.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: (1) By cooperating with multiple discharge pipes arranged in a ring array, the rotating pipe can be driven to rotate synchronously while the feeding auger rotates to feed material. The discharge state of the discharge pipe can be switched periodically to ensure that at least one discharge pipe always maintains an effective discharge state facing downward during the operation. This solves the problem of material interruption caused by the pipe opening facing upward when feeding material with a traditional single pipe rotating pipe. It allows the modifier to be added without interruption throughout the process, meeting the requirements of continuous material supply for on-site thermal recycling construction.

[0012] (2) The linkage component is directly connected to the rotating shaft and rotating tube of the feeding auger, so that the rotation speed of the rotating tube and the feeding rate of the feeding auger are matched, avoiding material accumulation or interruption caused by the mismatch between the discharge speed and the feeding speed, and further ensuring the stability of the feeding process.

[0013] (3) When the discharge pipe is rotated to discharge downwards, the pipe wall is knocked by a ball. This can effectively break the "bridging" structure formed by the adsorption and friction of the modifier particles. At the same time, it can promote the material that is close to the pipe wall to detach from the adhesion layer, avoid the material from clumping and blocking in the pipe, and ensure that the discharge channel is always unobstructed. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an appearance drawing of the present utility model; Figure 3 This utility model Figure 2 An exterior view from another angle; Figure 4 This is a schematic diagram of the structure of the rotating tube and the annular plate of this utility model in their disassembled state; Figure 5 This is a schematic diagram of the structure of the striking component of this utility model;

[0016] In the diagram: 1. Hollow cylinder; 2. Feeding auger; 3. Rotating tube; 4. Linkage assembly; 41. Annular plate; 42. Internal toothed ring; 43. External toothed ring; 44. Connector; 5. Striking assembly; 51. Fixing block; 52. Protrusion; 53. Movable rod; 54. Striking ball; 55. Return spring; 6. Discharge tube; 7. First protruding ring; 8. Second protruding ring. Detailed Implementation

[0017] 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.

[0018] like Figures 1-4As shown, a synchronous and precise feeding system for modifiers used in in-situ thermal recycling includes a hollow cylinder 1, which is mounted on a vehicle frame. A material bin is installed on the hollow cylinder 1, and a feeding auger 2 is installed inside the hollow cylinder 1. Both ends of the rotating shaft of the feeding auger 2 extend to the outside of the hollow cylinder 1, and one end of the rotating shaft of the feeding auger 2 can be connected to a drive component (such as a motor), or connected to the shaft of the recycling vehicle's gearbox via a gear component (similar to the connection method disclosed in application number 202121453758.2, a synchronous feeding machine for modifiers used in in-situ thermal recycling, which is prior art and will not be detailed here). (To be repeated) In addition, it also includes a rotating tube 3 and a linkage assembly 4. The rotating tube 3 is rotatably connected to the end of the hollow cylinder 1. Specifically, a first protruding ring 7 is fixed to the outside of the rotating tube 3 near the end of the hollow cylinder 1, and a second protruding ring 8 is fixed to the outside of the hollow cylinder 1 near the end of the rotating tube 3. The first protruding ring 7 is rotatably connected to the second protruding ring 8, and multiple discharge tubes 6 are connected in a ring array on the rotating tube 3. The linkage assembly 4 is connected between the end of the rotating shaft of the feeding auger 2 and the rotating tube 3. When the feeding auger 2 rotates to feed material to the rotating tube 3, the rotating tube 3 is made to rotate synchronously through the linkage assembly 4.

[0019] The following is a detailed explanation regarding the rotatable connection between the first convex ring 7 and the second convex ring 8: An annular slide bar can be provided on the side of the first convex ring 7 facing the second convex ring 8, and an annular groove is provided on the side of the second convex ring 8 facing the first convex ring 7. The annular groove is larger inside and smaller outside, and the annular slide bar is set accordingly. This can prevent the annular slide bar from dislodging from the annular groove while ensuring rotation.

[0020] Among them, see Figures 3-4 As shown, the linkage component 4 includes an annular plate 41, an external gear ring 43, and a connector 44. An internal gear ring 42 is fixed to one end of the inner circumference of the annular plate 41 near the hollow cylinder 1. The external gear ring 43 is fixed to the outside of the rotating tube 3, and the external gear ring 43 and the internal gear ring 42 are meshed together. The connector 44 consists of a connecting column and multiple support rods. The connecting column is fixed to the end of the rotating shaft of the feeding auger 2, and the support rods are fixedly connected between the connecting column and the annular plate 41. During the operation of the recycling vehicle, the feeding auger 2 can discharge the material (modifier) ​​in the material bin and guide the material to the rotating tube. Material can be discharged through three downward-facing discharge pipes 6. When the feeding auger 2 rotates, it can drive the connecting piece 44 to rotate, which in turn drives the annular plate 41 with the inner toothed ring 42 to rotate, thereby driving the rotating pipe 3 with the outer toothed ring 43 to rotate. The discharge pipe 6 can be switched periodically to discharge material, so that at least one discharge pipe 6 always remains in a downward-facing state, avoiding the material interruption problem that may occur in the traditional single discharge method. This dynamic discharge mode enables the modifier to be continuously and evenly added to the designated position, reducing the addition error and improving the accuracy of the modified material processing.

[0021] In addition, see Figures 1-3and Figure 5 As shown, it also includes a striking component 5, which is disposed outside the hollow cylinder 1. When the rotating tube 3 rotates, the striking component 5 strikes the downward-facing discharge tube 6.

[0022] Among them, see Figure 3 and Figure 5 As shown, the striking assembly 5 includes a fixing block 51 and a striking member. The fixing block 51 is fixed to the lower end of the hollow cylinder 1 by a collar, and a protrusion 52 is fixed on the fixing block 51. One end of the striking member is movably disposed on the protrusion 52, and the striking member can be deflected back and forth by means of the hinge axis of the protrusion 52.

[0023] The striking element includes a movable rod 53 hinged to the protrusion 52, and a striking ball 54 fixed at the end of the movable rod 53 away from the protrusion 52. The striking ball 54 is made of a highly elastic and wear-resistant material, and a return spring 55 is connected between the movable rod 53 and the fixed block 51.

[0024] As described above, during the feeding process of rotating tube 3, each discharge tube 6 rotates and passes through the downward discharge process. During this process, the discharge tube 6 will strike the ball 54 at the end of the movable rod 53. At the moment of impact with the discharge tube 6, the impact force can be transmitted to the tube wall of the discharge tube 6, causing the tube wall to generate high-frequency micro-amplitude vibration. On the one hand, this can break the bridging structure formed by the adsorption and friction between the material particles, avoiding blockage in the tube. On the other hand, the vibration can also reduce the frictional resistance between the material and the tube wall. The material that was originally tightly attached to the tube wall due to friction will detach from the tube wall under the action of vibration, forming a smoother material flow channel. This ensures that the material in the tube falls quickly at a faster flow rate and in a more uniform state, reducing the probability of blockage and ensuring the continuity of feeding operations. The impact vibration makes the material in the discharge tube 6 fall quickly, reducing the occurrence of blockage. Moreover, after the discharge tube 6 passes the ball 54, during the process of the return spring 55 returning to its original state, the ball 54 can quickly return to its original position to strike the next discharge tube 6.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modifier synchronous precise feeding system for hot in-place recycling, comprising a hollow cylinder (1) in which a feeding auger (2) is installed, characterized in that, Also includes: Rotary tube (3) is rotatably connected to the end of the hollow cylinder (1), and multiple discharge tubes (6) are connected in a ring array on the rotating tube (3). The linkage component (4) is connected between the end of the rotating shaft of the feeding auger (2) and the rotating tube (3). When the feeding auger (2) rotates to feed material to the rotating tube (3), the linkage component (4) makes the rotating tube (3) rotate synchronously. The striking component (5) is located outside the hollow cylinder (1). When the rotating tube (3) rotates, the striking component (5) strikes the downward-facing discharge tube (6).

2. The precise and synchronous modifier feeding system for hot in-place recycling according to claim 1, characterized in that, The linkage component (4) includes: An annular plate (41) has an internal toothed ring (42) fixed at one end of its inner circumference near the hollow cylinder (1). An external toothed ring (43) is fixed outside the rotating tube (3), and the external toothed ring (43) and the internal toothed ring (42) are meshed together.

3. The precise and synchronous modifier feeding system for hot-in-place recycling according to claim 2, characterized in that: The linkage component (4) also includes a connector (44), which consists of a connecting column and multiple support rods. The connecting column is fixed to the end of the rotating shaft of the feeding auger (2), and the support rods are connected between the connecting column and the annular plate (41).

4. The precise and synchronous modifier feeding system for hot in-place recycling according to claim 1, characterized in that, The striking component (5) includes: The fixing block (51) is fixed to the lower end of the hollow cylinder (1) by a collar, and a protrusion (52) is fixed on the fixing block (51). The striking element has one end movably disposed on the protrusion (52), and the striking element can be deflected back and forth by means of the hinge axis of the protrusion (52).

5. The precise and synchronous modifier feeding system for hot-in-place recycling according to claim 4, characterized in that, The striking element includes a movable rod (53) hinged to the protrusion (52), with a striking ball (54) fixed at one end of the movable rod (53) away from the protrusion (52), and a return spring (55) connected between the movable rod (53) and the fixed block (51).

6. The precise and synchronous modifier feeding system for hot-in-place recycling according to claim 1, characterized in that, A first protruding ring (7) is fixed to one end of the rotating tube (3) near the hollow cylinder (1), and a second protruding ring (8) is fixed to the outside of the hollow cylinder (1). The first protruding ring (7) is rotatably connected to the second protruding ring (8).

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