Gum powder asphalt stirring mechanism

Abstract

The present application relates to rubber powder asphalt production equipment technical field, specifically for rubber powder asphalt mixing mechanism, including tank body and rotation setting in the tank body rotation axis, the tank body upper layer is provided with a plurality of anchor type upper wall scraping paddle, the tank body lower layer is provided with a plurality of anchor type lower wall scraping paddle, the tank body is provided with two respectively for controlling anchor type upper wall scraping paddle or anchor type lower wall scraping paddle adjusting adjustable gap adjustable stirring component, this rubber powder asphalt mixing mechanism, through anchor type upper wall scraping paddle and anchor type lower wall scraping paddle, the wall scraping function is divided into zones, avoid the high resistance problem that single scraping plate needs to cover the whole tank wall, reduce the stirring shaft operation load, thereby enhancing the axial material conveying capacity and overall mixing efficiency, and according to the gap between rubber powder settlement position and viscosity distribution dynamic adjustment wall scraping paddle and tank wall;Use the rotation axis directly as the heat conduction carrier, efficiently transfer heat to each area in the tank body, compensate for the temperature loss caused by rubber powder heat absorption, avoid local temperature rapid decline.

Description

TECHNICAL FIELD

[0001] The application relates to a rubber powder asphalt production equipment technical field, in particular to a rubber powder asphalt stirring mechanism. BACKGROUND

[0002] As an environmentally friendly pavement material, the mixing efficiency in the production process of rubber powder modified asphalt directly affects the product quality and energy consumption level. At present, the mechanical stirring method is generally used in the industry to realize the mixing of rubber powder and base asphalt. However, in the actual production process, due to the high heat absorption characteristics of rubber powder and the non-Newtonian fluid characteristics of the asphalt system, the mixing process faces many technical bottlenecks.

[0003] In the prior art, such as the production device shown in patent CN221753033U, an anchor type screw belt composite paddle structure is adopted to try to solve the mixing problem. The device controls the stepwise feeding mode through a rotating disc, which reduces the initial agglomeration phenomenon of rubber powder to a certain extent. However, this design still has significant defects in actual application: after the addition of rubber powder, its rapid heat absorption characteristics cause the viscosity of the asphalt system to increase sharply, that is, the thickening phenomenon. At the same time, the scraper needs to scrape the entire tank wall during rotation, which greatly increases the operating resistance of the composite stirring paddle. Specifically, the stirring shaft speed is forced to decrease, which further causes the axial material conveying capacity to decrease and the local shear force to be insufficient.

[0004] More seriously, the flow stagnation caused by the reduced speed forms a vicious cycle. In the bottom area of the tank, the settled rubber powder forms high-viscosity agglomerates due to insufficient shearing, and these agglomerates continuously absorb the heat of the surrounding asphalt, causing the local temperature to drop rapidly. The measured data shows that, without effective heat compensation, the tank bottom temperature can drop by 10-15 DEG C within 3 minutes. This temperature drop further exacerbates the increase in the viscosity of the asphalt, continuously deteriorating the rheological properties of the mixing system. Therefore, we propose a rubber powder asphalt stirring mechanism. SUMMARY

[0005] One of the technical problems to be solved by the present application is how to design a rubber powder asphalt stirring mechanism that adjusts the distance between the scraper and the tank wall according to the rubber powder reaction.

[0006] To solve the above technical problems, the rubber powder asphalt stirring mechanism provided by the embodiments of the present application comprises a tank body and a rotating shaft rotatingly arranged in the tank body. The upper layer of the tank body is provided with a plurality of anchor type upper scraping wall paddles, and the lower layer of the tank body is provided with a plurality of anchor type lower scraping wall paddles. Two gap adjustable stirring components for controlling the adjustment of the anchor type upper scraping wall paddles or the anchor type lower scraping wall paddles are arranged in the tank body. The rotating shaft is a hollow structure, and a heat transfer component for transferring heat to the rotating shaft is arranged in the tank body. The heat transfer component can drive the gap adjustable stirring component to work.

[0007] In some embodiments, the gap-adjustable stirring component comprises a plurality of support frames arranged on the tank body, a driving member arranged on the support frame, a plurality of sliding rods arranged on the side of the anchor-shaped upper wall-scraping paddle close to the rotating shaft, and a sliding member arranged between the rotating shaft and the anchor-shaped upper wall-scraping paddle.

[0008] In some embodiments, the driving member comprises a driving shaft rotatably arranged on the support frame, a transmission gear arranged on the driving shaft and the rotating shaft, and a driving motor arranged on the support frame.

[0009] In some embodiments, the sliding member comprises a plurality of sliding frames arranged on the rotating shaft, the sliding rods are slidably arranged on the adjacent sliding frames, and a deflection rod is rotatably arranged on the middle sliding rod.

[0010] In some embodiments, the sliding frame is provided with a discharging hole, and the end of the sliding rod close to the discharging hole is chamfered.

[0011] In some embodiments, the anchor-shaped upper wall-scraping paddle and the anchor-shaped lower wall-scraping paddle are all in the shape of a triangular prism, and the side close to the inner wall of the tank body is chamfered.

[0012] In some embodiments, the heat transfer component comprises an oil return cavity arranged on the outer side of the top of the rotating shaft, a pipeline member arranged on the outer side of the tank body and connected with the rotating shaft and the oil return cavity, two pressure lifting members arranged in the tank body and used for controlling the operation of the gap-adjustable stirring component, and a heat transfer member arranged on the rotating shaft.

[0013] In some embodiments, the pipeline member comprises a heat-conducting oil tank arranged on the support frame, an oil return pipe and an oil outlet pipe arranged on the heat-conducting oil tank, a fixed cavity one rotatably arranged on the outer side of the tank body through a sealing bearing, a fixed cavity two rotatably arranged on the outer side of the tank body through a sealing bearing, the oil return pipe being connected with the fixed cavity one, and the oil outlet pipe being connected with the fixed cavity two.

[0014] In some embodiments, the pressure lifting member comprises an adjusting cavity connected with the rotating shaft, the diameter of the adjusting cavity being larger than the diameter of the rotating shaft, a return spring arranged in the adjusting cavity, a lifting plate arranged at the end of the return spring, an oil discharge pipe arranged on the lifting plate, the outer wall of the oil discharge pipe being in close contact with the inner wall of the hollow part of the rotating shaft, a plurality of oil discharge holes arranged on the oil discharge pipe, a plurality of radial columns arranged on the lifting plate, and a connecting plate arranged between the radial columns.

[0015] In some embodiments, the heat transfer member comprises a plurality of hollow spiral paddles arranged on the sliding frame, the sliding frame is provided with a drainage groove communicated with the rotating shaft, and the hollow spiral paddles are connected with oil return branch pipes at the end away from the sliding frame; the oil return branch pipes located at the upper layer of the tank are communicated with the oil return cavity, and an oil return connecting pipe is arranged between the oil return branch pipes located at the upper layer of the tank and the adjacent oil return branch pipes located at the lower layer of the tank.

[0016] The present application has at least the following advantages:

[0017] 1. Layered scraping wall design: By arranging a plurality of anchor type upper scraping wall paddles at the upper layer of the tank and a plurality of anchor type lower scraping wall paddles at the lower layer of the tank, the scraping wall function is divided, the high resistance problem of a single scraping plate covering the entire tank wall is avoided, the rotation load of the stirring shaft is reduced, the stirring shaft can maintain a higher speed, and the axial material conveying capacity and overall mixing efficiency are enhanced;

[0018] 2. Gap adjustable stirring component: By two adjusting components for controlling the gap of the anchor type upper scraping wall paddle or the anchor type lower scraping wall paddle, the gap between the scraping wall paddle and the tank wall can be dynamically adjusted according to the rubber powder sedimentation position and viscosity distribution (for example, the gap at the tank bottom is adjusted to be smaller to enhance the scraping of the agglomerates, and the gap at the tank top is adjusted to be larger to reduce the invalid resistance), the local shear force is targetedly improved, and the rubber powder is prevented from accumulating to form agglomerates at the tank bottom;

[0019] 3. Hollow rotating shaft + heat transfer oil heat transfer: The rotating shaft is provided with a hollow structure and a heat transfer component, heat transfer oil is introduced into the rotating shaft for heat transfer, the rotating shaft is directly used as a heat conduction carrier, heat is efficiently transferred to each area in the tank (especially the bottom area prone to temperature drop), the temperature loss caused by the heat absorption of the rubber powder is compensated, the local temperature is prevented from rapidly dropping, and the abnormal increase of asphalt viscosity is inhibited;

[0020] 4. Reduce invalid energy consumption: The overall stirring resistance is reduced by partitioned scraping wall, and the motor load and heat energy consumption are reduced on the premise of ensuring the mixing effect by precise heat compensation of the heat transfer oil to improve the production energy efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the plane structure of the present application;

[0023] Figure 3 It is a schematic diagram of the overall local section structure of the present application;

[0024] Figure 4 It is a schematic diagram of the overall local section structure of the present application; Figure 3 It is a schematic diagram of the enlarged structure of area A in the present application;

[0025] Figure 5Structure diagram of heat transfer component of the present application;

[0026] Figure 6 Structure diagram of the whole another sectional structure of the present application;

[0027] Figure 7 Structure diagram of the whole sectional structure of the present application; Figure 6 Structure diagram of enlarged B area of the present application;

[0028] Figure 8 Structure diagram of the whole sectional structure of the present application;

[0029] Figure 9 Structure diagram of enlarged C area of the present application; Figure 8

[0030] Structure diagram of enlarged D area of the present application; Figure 10 Figure 8 Structure diagram of gap-adjustable stirring component of the present application;

[0031] Figure 11 Structure diagram of the whole sectional structure of the present application;

[0032] Figure 12 Figure 11 Structure diagram of enlarged E area of the present application;

[0033] Figure 13 Structure diagram of the whole sectional structure of the present application; Figure 12

[0034] Structure diagram of combined structure of single anchor lower wall-scraping paddle and hollow ribbon paddle of the present application; Figure 14

[0035] Structure diagram of motion state of anchor upper wall-scraping paddle and anchor lower wall-scraping paddle of the present application. Figure 15 In the figure: 1, tank body; 2, rotating shaft; 3, anchor upper wall-scraping paddle; 4, anchor lower wall-scraping paddle; 5, gap-adjustable stirring component; 51, support frame; 52, sliding rod; 6, driving member; 61, driving shaft; 62, transmission gear; 63, driving motor; 7, sliding member; 71, sliding frame; 72, deflection rod; 8, heat transfer component; 81, oil return cavity; 9, pipeline member; 91, heat conduction oil tank; 92, oil return pipe; 93, oil outlet pipe; 94, fixed cavity one; 95, fixed cavity two; 10, pressure lifting member; 101, adjusting cavity; 102, reset spring; 103, lifting plate; 104, oil discharge pipe; 105, oil discharge hole; 106, radial column; 107, connecting plate; 11, heat transfer member; 111, hollow ribbon paddle; 112, liquid discharge groove; 113, oil return branch pipe; 114, oil return connecting pipe; 12, discharge hole.

[0036] DETAILED DESCRIPTION

[0037] ​​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application. Embodiment one

[0038] Please refer to Figures 1-15 The present application provides a technical solution:

[0039] The rubber powder asphalt stirring mechanism comprises a tank body 1 and a rotating shaft 2 rotatingly arranged in the tank body 1. A plurality of anchor type upper wall scraping paddles 3 are arranged on the upper layer of the tank body 1. A plurality of anchor type lower wall scraping paddles 4 are arranged on the lower layer of the tank body 1. Two gap adjustable stirring components 5 for controlling the adjustment of the anchor type upper wall scraping paddles 3 or the anchor type lower wall scraping paddles 4 are arranged in the tank body 1. The rotating shaft 2 is a hollow structure. A heat transfer component 8 for transferring heat to the rotating shaft 2 is arranged in the tank body 1. The heat transfer component 8 can drive the gap adjustable stirring component 5 to work.

[0040] The tank body 1 is made of a material and size conforming to the chemical industry standard, and is a common structure. The tank body 1 is not described here. The anchor type upper wall scraping paddles 3 and the anchor type lower wall scraping paddles 4 are arranged in the tank body 1. They are optimized for different areas in the rubber powder mixing process to ensure the dispersion effect and mixing efficiency of the rubber powder. Please refer to Figure 15 :

[0041] The anchor type upper wall scraping paddles 3 are located in the upper part of the tank body 1, that is, the initial mixing area near the rubber powder adding point. When the rubber powder is just added, the asphalt is thickened due to heat absorption and swelling, and the resistance increases significantly. The rotating speed of the rotating shaft 2 is forced to decrease. At this time, the axial flow and local shear of the high viscosity area are insufficient. In addition, the rubber powder will preferentially absorb the heat of the surrounding asphalt, causing the viscosity to further increase.

[0042] To solve this problem, a small pressure of heat conducting oil is introduced at this time, so that the heat conducting oil can form a circulation in the initial mixing area. In addition, the anchor type upper wall scraping paddles 3 do not fit the inner wall of the tank body 1 (move), and the anchor type lower wall scraping paddles 4 do not fit the inner wall of the tank body 1 (do not move) to reduce the stirring resistance, thereby increasing the rotating speed of the rotating shaft 2 and improving the mixing efficiency. At the same time, by adjusting the position of the paddle, the shear force distribution of the initial mixing area can be optimized to promote the preliminary dispersion of the rubber powder and the asphalt.

[0043] The anchor type lower wall scraping paddle 4 is located in the lower part and the bottom of the tank body 1, that is, the rubber powder deposition area where the rubber powder is deposited near the tank bottom. In this area, the rubber powder is deposited after a period of mixing. The thickening effect caused by the heat absorption and swelling of asphalt also reduces the rotating speed of the rotating shaft 2. The axial flow and local shear of the high viscosity area are insufficient, and the rubber powder preferentially absorbs heat, which further aggravates the viscosity increase. At this time, the high-pressure heat conducting oil is introduced to enable the heat conducting oil to circulate in the initial mixing area and the rubber powder deposition area, and the anchor type upper wall scraping paddle 3 does not fit the inner wall of the tank body 1 (moves more), and the anchor type lower wall scraping paddle 4 does not fit the inner wall of the tank body 1 (moves) to reduce resistance and increase the rotating speed of the rotating shaft 2.

[0044] In addition, during the rotation of the rotating shaft 2, the heat transfer component 8 will introduce heat conducting oil into the initial mixing area and the rubber powder deposition area in turn to compensate for the temperature drop caused by the increase in viscosity, ensure the dispersion effect of the rubber powder, effectively alleviate the negative impact of temperature drop on the dispersion of the rubber powder, ensure the full mixing of asphalt and rubber powder, and the uniform heat transfer of the heat conducting oil helps to maintain the fluidity of the asphalt and avoid the problem of rubber powder agglomeration caused by local overcooling.

[0045] It should be noted that when the rubber powder is mixed, an adhesive layer will be formed on the inner wall of the tank body 1 due to the action of centrifugal force, which will also cause local temperature drop and affect the dispersion effect of the rubber powder. Therefore, after a period of mixing, the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 need to be adjusted to be close to the inner wall of the tank body 1 to timely remove the rubber powder of the adhesive layer. This operation can further improve the dispersion uniformity of the rubber powder, avoid the mixing dead angle caused by the adhesive layer, and ensure the quality stability of the final product. In order to ensure that the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 are close to the inner wall of the tank body 1 at the same time, the initial positions of the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 need to be controlled, that is, the distance between the anchor type upper wall scraping paddle 3 and the inner wall of the tank body 1 is greater than the distance between the anchor type lower wall scraping paddle 4 and the inner wall of the tank body 1.

[0046] The anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 are provided with gap adjustable stirring components 5. The following will be expanded on the anchor type upper wall scraping paddle 3.

[0047] The gap adjustable stirring component 5 includes a plurality of support frames 51 arranged on the tank body 1. The support frame 51 is provided with a driving member 6. The anchor type upper wall scraping paddle 3 is provided with a plurality of sliding rods 52 on the side close to the rotating shaft 2. The rotating shaft 2 and the anchor type upper wall scraping paddle 3 are provided with a sliding member 7.

[0048] The support frame 51 is a key component of the stability of the tank body 1 structure, and its layout needs to consider the safety of equipment operation, the convenience of operation, and the durability of long-term use. In this scheme, only part of the support frame 51 is displayed, such as the support structure for the rotating shaft 2 or the heat transfer component 8 on the top or around the tank body 1. However, in actual application, the design of the support frame 51 needs to cover more functional scenarios to meet the needs of the whole process operation:

[0049] To facilitate the entry of operating personnel into the tank body 1 for inspection, cleaning or maintenance (such as cleaning the adhesive layer of powder, checking the status of the heat transfer component 8), a special "walking support" structure needs to be set up. This type of support usually appears as a ladder, platform or guardrail system extending outside or inside the tank body 1, and the material needs to have anti-slip and corrosion-resistant properties and meet the safety standards for high-altitude work;

[0050] The tank body 1 may be at risk of deformation due to internal high-viscosity material stirring impact, temperature cycle changes (such as expansion and contraction caused by heating of heat conducting oil), or external loads (such as wind load, earthquake). Therefore, "reinforcing support" structures need to be added to the outer wall of the tank body 1, usually in the form of ribbed plates, reinforcing ribs or truss systems distributed along the longitudinal or circumferential direction of the tank body 1;

[0051] In addition, in order to completely scrape off the adhesives on the inner wall of the tank body 1, the anchor-type upper wall scraping paddle 3 and the anchor-type lower wall scraping paddle 4 can be lengthened so that they can completely cover the inner wall of the tank body 1 when combined;

[0052] The drive member 6 includes a drive shaft 61 rotatably arranged on the support frame 51, and the drive shaft 61 and the rotating shaft 2 are provided with transmission gears 62 that engage with each other. The support frame 51 is provided with a drive motor 63;

[0053] The drive motor 63 drives the rotation of the drive shaft 61, and the drive shaft 61 drives the rotation of the transmission gears 62 on it. Under the drive of the transmission gears 62, the rotating shaft 2 is driven to rotate, thereby realizing the rotation of the anchor-type upper wall scraping paddle 3 and the anchor-type lower wall scraping paddle 4;

[0054] The sliding member 7 includes a plurality of sliding frames 71 arranged on the rotating shaft 2, and the sliding rods 52 are respectively slidably arranged on adjacent sliding frames 71. The sliding rod 52 located in the middle is rotatably provided with a deflection rod 72;

[0055] The sliding frame 71 is a dynamic component in the stirring system, and its structural design directly affects the mixing efficiency of the rubber powder and asphalt and the stability of the equipment operation. In this scheme, the sliding frame 71 is designed with an inclined structure on both sides. This design not only significantly reduces the mechanical resistance during rotation, but also realizes high-efficiency shearing of the rubber powder and asphalt through fluid dynamics optimization:

[0056] The inclined sliding frame 71 surface can guide the rubber powder and asphalt mixture to the front of the rotating direction, reduce the direct impact resistance of the material to the paddle, compared with the vertical paddle, the inclined structure can more efficiently disperse the material accumulation, avoid the sudden increase of torque caused by local high pressure area; the inclination angle makes the sliding frame 71 apply shear force to the material while rotating, and at the same time, converts part of the radial force into axial component, thereby reducing the driving power required by the rotating shaft 2; the inclined surface can reduce the retention of rubber powder or asphalt at the edge of the sliding frame 71, avoid the formation of adhesive layer due to local accumulation of rubber powder or asphalt, further reduce the rotation resistance and prevent mixing dead angle;

[0057] The length of the sliding rod 52 connected with the deflection rod 72 is longer than that of the other sliding rods 52, so as to avoid that the length of the deflection rod 72 is too long to increase the resistance when rotating. Embodiment two

[0058] Please refer to Figures 1-10 , the present application provides a technical solution:

[0059] The rubber powder asphalt mixing mechanism, the sliding frame 71 is provided with a discharge hole 12, the sliding rod 52 is treated by chamfering at one end close to the discharge hole 12, the sliding frame 71 is provided with a displacement sliding groove, the discharge hole 12 is located in the displacement sliding groove and is communicated with the displacement sliding groove, the width of the discharge hole 12 is the same as the width of the displacement sliding groove on the sliding frame 71, when the sliding rod 52 moves to the side of the rotating shaft 2 along the sliding frame 71, the material in the displacement sliding groove can be discharged from the top or the discharge hole 12, especially when the asphalt mixing is completed and needs to be discharged, the material can be discharged, when the sliding rod 52 moves, the chamfer structure on the sliding rod 52 can guide the material to slide along the inclined surface, so that the material is not clamped between the sliding rod 52 and the displacement sliding groove. Embodiment three

[0060] Please refer to Figures 11-14 , the present application provides a technical solution:

[0061] The rubber powder asphalt mixing mechanism, the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 are all three-prism structures, that is, the columnar bodies with triangular cross sections, and are treated by chamfering at one side close to the inner wall of the tank body 1, the three edges of the triangle can exert periodic varying local shear force on the mixture when rotating, forming a “micro vortex” effect, such shear force distribution can not only break the rubber powder agglomerates, but also avoid energy waste caused by global high shear, at the same time, the asymmetric structure of the three-prism can promote the coupling of axial and radial flow, enhance the mixing uniformity, the three-prism structure can reduce the resistance when the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 rotate, at the same time, the chamfering treatment at one side close to the tank body 1 can make the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 more close to the inner wall of the tank body 1, improve the wall scraping effect. Embodiment four

[0062] Please refer to Figures 1-15 The present application provides a technical solution:

[0063] The heat transfer component 8 includes an oil return cavity 81 arranged on the top outer side of the rotating shaft 2, the tank body 1 is provided with a pipeline component 9 connected with the rotating shaft 2 and the oil return cavity 81, the tank body 1 is provided with two pressure lifting components 10 respectively controlling the working of the adjustable gap stirring component 5, the rotating shaft 2 is provided with a heat transfer component 11, and the oil return cavity 81 also rotates with the rotating shaft 2 and is rotatably connected with the top of the tank body 1 through a sealing bearing;

[0064] The pipeline component 9 includes a heat conducting oil tank 91 arranged on the support frame 51, the heat conducting oil tank 91 is provided with an oil return pipe 92 and an oil outlet pipe 93, the oil return cavity 81 is rotatably provided with a fixed cavity one 94 at one end of the outer side of the tank body 1 through a sealing bearing, the rotating shaft 2 is rotatably provided with a fixed cavity two 95 at one end of the outer side of the tank body 1 through a sealing bearing, the oil return pipe 92 is connected with the fixed cavity one 94, and the oil outlet pipe 93 is connected with the fixed cavity two 95;

[0065] Since the rotating shaft 2 and the oil return cavity 81 need to rotate continuously, and the heat conducting oil pipeline must be fixed, the fixed cavity one 94 and the fixed cavity two 95 are arranged between the fixed structure and the rotating component, and the two are rotatably connected through a sealing bearing, which not only ensures the smooth entry and exit of the heat conducting oil, but also effectively prevents leakage;

[0066] The sealing bearing is made of high-temperature-resistant and corrosion-resistant material (such as fluorine rubber or graphite composite material), the inner and outer rings of which are tightly matched with the fixed cavity and the rotating shaft 2, which not only ensures the flexibility of rotation, but also maintains the oil circuit sealing, the fixed cavity one 94 is responsible for oil return collection, and the fixed cavity two 95 is responsible for heat conducting oil injection, and the two cooperates to form a complete circulation path, providing stable heat conduction support for the inside of the tank body 1;

[0067] The oil outlet pipe 93 is integrated with a pressure regulating valve, a flow regulating valve and an oil heating device to form a multifunctional control module, the pressure regulating valve dynamically balances the pipeline pressure to avoid system overpressure caused by heat conducting oil expansion, the flow regulating valve accurately controls the oil inlet / outlet rate to match the stirring power and the heat load demand of the tank body 1, and the oil heating device (such as an electric heating sleeve or a circulating heating jacket) secondary heats the heat conducting oil to compensate for pipeline heat loss and ensure that the oil temperature injected into the tank body 1 is stable within the set range;

[0068] The pressure lifting piece 10 comprises an adjusting cavity 101 communicated with the rotating shaft 2, the diameter of the adjusting cavity 101 is larger than that of the rotating shaft 2, a return spring 102 is arranged in the adjusting cavity 101, the end of the return spring 102 is provided with a lifting plate 103, an oil discharge pipe 104 is arranged on the lifting plate 103, the outer wall of the oil discharge pipe 104 is in close contact with the inner wall of the hollow position of the rotating shaft 2, a plurality of oil discharge holes 105 are formed in the oil discharge pipe 104, a plurality of radial columns 106 are arranged on the lifting plate 103, and a connecting plate 107 is arranged between the radial columns 106;

[0069] The elastic force of the return spring 102 located at the upper layer of the tank body 1 is smaller than that of the return spring 102 located at the lower layer of the tank body 1, so that when the pressure of the heat conducting oil flowing in is small, the heat conducting oil can form a circulation in the initial mixing area, and the anchor-shaped upper wall scraping paddle 3 does not fit the inner wall of the tank body 1 (moves), and the anchor-shaped lower wall scraping paddle 4 does not fit the inner wall of the tank body 1 (does not move); when the pressure of the heat conducting oil flowing in is medium, the heat conducting oil can form a circulation in the initial mixing area and the rubber powder settling area, and the anchor-shaped upper wall scraping paddle 3 does not fit the inner wall of the tank body 1 (moves more), and the anchor-shaped lower wall scraping paddle 4 does not fit the inner wall of the tank body 1 (moves); when the pressure of the heat conducting oil flowing in is large, the heat conducting oil can form a circulation in the initial mixing area and the rubber powder settling area, and the anchor-shaped upper wall scraping paddle 3 and the anchor-shaped lower wall scraping paddle 4 are adjusted to be close to the inner wall of the tank body 1;

[0070] Because the return spring 102 will be fatigued after being used for a period of time, the predetermined use requirement cannot be met, so the adjusting cavity 101 and the rotating shaft 2 are connected through a flange, and when the return spring 102 cannot meet the requirement, the return spring 102 can be disassembled through the flange;

[0071] The radial column 106 movably penetrates the adjusting cavity 101, and the two ends thereof are fixed to the cavity through sealing bearings, the sealing bearings are made of high-temperature-resistant fluorine rubber material, which not only ensures the free rotation of the radial column 106, but also effectively prevents the heat conducting oil from leaking, and ensures the stability of the pressure in the adjusting cavity 101;

[0072] The connecting plate 107 is rotationally connected with the plurality of deflection rods 72, when the connecting plate 107 moves downward, it can drive the plurality of deflection rods 72 to rotate synchronously, so as to drive the plurality of sliding rods 52 to move to the periphery;

[0073] A limiting protrusion is arranged in the adjusting cavity 101, which is used for locking and limiting the lifting plate 103;

[0074] The heat transfer element 11 comprises a plurality of hollow spiral paddles 111 arranged on the sliding frame 71, the sliding frame 71 is provided with a liquid discharge groove 112 communicated with the rotating shaft 2, and the hollow spiral paddles 111 are connected with the oil return branch pipe 113 at the end away from the sliding frame 71, the oil return branch pipe 113 located at the upper layer of the tank body 1 is communicated with the oil return cavity 81, and the oil return branch pipe 113 located at the upper layer of the tank body 1 is provided with the oil return connecting pipe 114 between the adjacent oil return branch pipe 113 located at the lower layer of the tank body 1;

[0075] In the scheme, the anchor type upper wall scraping paddle 3 and the anchor type lower wall scraping paddle 4 are both provided with three, therefore, the hollow spiral paddles 111 located at the upper and lower layers of the tank body 1 are also provided with three, but the number is not limited, because the oil return branch pipe 113 and the oil return connecting pipe 114 cannot interfere with the sliding frame 71 or other structures when designed, therefore, the number of turns of the hollow spiral paddles 111 cannot be designed as an integer multiple, and the product of the number of turns and the pitch of the hollow spiral paddles 111 cannot be greater than the distance between the adjacent two sliding frames 71, and the specific number of turns and the pitch are not limited, which can be adjusted according to the actual situation.

[0076] After the heat conducting oil is introduced, the oil discharge pipe 104 moves downward, driving the lifting plate 103 and the radial column 106 to move downward, the radial column 106 drives the connecting plate 107 to move downward, the connecting plate 107 realizes the displacement of the sliding rod 52 by extruding and deflecting the rod 72, and then pushes the anchor type upper wall scraping paddle 3 outwards to the inner wall of the tank body 1, the heat conducting oil enters the adjusting cavity 101 from the oil discharge hole 105, then enters the liquid discharge groove 112 on the sliding frame 71, and then enters the oil return branch pipe 113 through the hollow spiral paddles 111 and returns to the oil return cavity 81 directly.

[0077] The heat conducting oil inside the oil return branch pipe 113 located at the lower layer of the tank body 1 needs to enter the oil return branch pipe 113 located at the upper layer of the tank body 1 through the oil return connecting pipe 114, and then return to the oil return cavity 81.

[0078] It should be noted that, in the present text, relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0079] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application.

Claims

1. A rubber powder asphalt mixing mechanism, comprising a tank (1) and a rotating shaft (2) rotatably disposed within the tank (1), characterized in that: The upper layer of the tank (1) is provided with multiple anchor-type upper wall scraping blades (3), and the lower layer of the tank (1) is provided with multiple anchor-type lower wall scraping blades (4). The tank (1) is provided with two adjustable-gap stirring components (5) for controlling the adjustment of the anchor-type upper wall scraping blades (3) or the anchor-type lower wall scraping blades (4). The rotating shaft (2) is a hollow structure. The tank (1) is provided with a heat transfer component (8) for transferring heat to the rotating shaft (2) by circulating heat transfer oil. The heat transfer component (8) can drive the adjustable-gap stirring components. The adjustable-gap stirring component (5) is in operation. The adjustable-gap stirring component (5) includes multiple support frames (51) respectively mounted on the tank body (1). A driving component (6) is mounted on each support frame (51). Multiple sliding rods (52) are mounted on the side of the anchor-type upper wall scraper (3) near the rotating shaft (2). Sliding components (7) are mounted between the rotating shaft (2) and the anchor-type upper wall scraper (3). The heat transfer component (8) includes a return oil chamber (81) located on the outer side of the top of the rotating shaft (2). The tank body (1) is provided with a pipeline (9) connected to the rotating shaft (2) and the return oil chamber (81) on the outside. The tank body (1) is provided with two pressure lifting components (10) that control the operation of the adjustable-gap stirring component (5) respectively. The rotating shaft (2) is provided with a heat transfer component (11). The pressure lifting component (10) includes an adjustment chamber (101) connected to the rotating shaft (2). The diameter of the adjustment chamber (101) is larger than the diameter of the rotating shaft (2). The adjustment chamber (101) contains... A return spring (102) is provided, and a lifting plate (103) is provided at the end of the return spring (102). An oil drain pipe (104) is provided on the lifting plate (103). The outer wall of the oil drain pipe (104) is in contact with the inner wall of the hollow position of the rotating shaft (2). Multiple oil drain holes (105) are provided on the oil drain pipe (104). Multiple radial columns (106) are provided on the lifting plate (103). A connecting plate (107) is provided between the multiple radial columns (106).

2. The asphalt mixing mechanism according to claim 1, characterized in that: The driving component (6) includes a drive shaft (61) rotatably mounted on a support frame (51), a transmission gear (62) meshing with the drive shaft (61) and the rotating shaft (2), and a drive motor (63) mounted on the support frame (51).

3. The asphalt mixing mechanism according to claim 2, characterized in that: The sliding member (7) includes multiple sliding frames (71) arranged on the rotating shaft (2), and the sliding rods (52) are respectively slidably arranged on adjacent sliding frames (71). A deflection rod (72) is rotatably arranged on the sliding rod (52) located in the middle.

4. The asphalt mixing mechanism according to claim 3, characterized in that: The sliding frame (71) has a discharge hole (12), and the end of the sliding rod (52) near the discharge hole (12) is chamfered.

5. The asphalt mixing mechanism according to claim 4, characterized in that: Both the anchor-type upper scraper (3) and the anchor-type lower scraper (4) are triangular prism structures, and the side closest to the inner wall of the tank (1) is chamfered.

6. The asphalt mixing mechanism according to claim 5, characterized in that: The pipeline component (9) includes a heat transfer oil tank (91) mounted on a support frame (51). The heat transfer oil tank (91) is provided with a return oil pipe (92) and an outlet oil pipe (93). The return oil chamber (81) is located at one end outside the tank body (1) and is rotatably provided with a fixed chamber one (94) via a sealed bearing. The rotating shaft (2) is located at one end outside the tank body (1) and is rotatably provided with a fixed chamber two (95) via a sealed bearing. The return oil pipe (92) and the fixed chamber one (94) are connected, and the outlet oil pipe (93) and the fixed chamber two (95) are connected.

7. The asphalt mixing mechanism according to claim 6, characterized in that: The heat transfer element (11) includes a plurality of hollow spiral propellers (111) respectively arranged on the sliding frame (71). Each sliding frame (71) has a drain groove (112) connected to the rotating shaft (2). The hollow spiral propellers (111) are connected to a return oil branch pipe (113) at the end away from the sliding frame (71). The return oil branch pipe (113) located on the upper layer of the tank (1) is connected to the return oil chamber (81). A return oil connecting pipe (114) is provided between the return oil branch pipe (113) located on the upper layer of the tank (1) and the adjacent return oil branch pipe (113) located on the lower layer of the tank (1).

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