Screw conveyor for self-healing concrete

Abstract

The utility model relates to the technical fields of concrete conveying, in particular to a spiral conveyor for self -repairing concrete, first spiral material guide axle and second spiral material guide axle are assembled in the both ends of material guide pipe respectively, and first spiral material guide axle and second spiral material guide axle are rotatably connected, and the material guide pipe corresponding to first spiral material guide axle is equipped with the connecting mouth, and the connecting mouth is connected the discharge gate of concrete mixing plant, is equipped with the discharge mouth in the one end of material guide pipe corresponding first spiral material guide axle, and the material guide pipe corresponding to second spiral material guide axle is equipped with the storage bin, and the concrete finished product can be discharged through first spiral material guide axle, and the second spiral material guide axle that sets up and first spiral material guide axle cooperates to convey the self -repairing microcapsule particle to first spiral material guide axle, and makes concrete and self -repairing microcapsule particle realize conveying and mixing in material guide pipe while first spiral material guide axle drives concrete to advance.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete conveying, specifically relating to a screw conveyor for self-healing concrete. Background Technology

[0002] With the development of concrete technology, self-healing microcapsule particles have been widely used. When using self-healing microcapsule particles, they need to be mixed with concrete. Before mixing, the concrete needs to be mixed first, and then the self-healing microcapsule particles are added to the concrete mixing equipment and mixed again. Compared with conventional concrete, the production of self-healing concrete requires the addition of the self-healing microcapsule particle mixing process, and there is a risk of damage to the self-healing microcapsule particles when they are mixed in the mixing equipment.

[0003] Screw conveyors can propel materials along conveying pipelines by rotating screw blades. They are often used to transport viscous materials such as concrete. Screw conveyors have a mixing function during the screw propulsion process of concrete. If the mixing function can be integrated into the screw conveyor, the production process of self-healing concrete can be simplified and the risk of breakage of self-healing microcapsule particles can be reduced.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a screw conveyor for self-healing concrete.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A screw conveyor for self-healing concrete includes a guide pipe, a first screw guide shaft, a second screw guide shaft, a connecting nozzle, and a storage bin. The first and second spiral guide shafts are respectively mounted on both ends of the guide tube and are rotatably connected to each other. The guide tube corresponding to the first spiral guide shaft is provided with the connecting nozzle, which is connected to the discharge port of the concrete mixing equipment. A discharge nozzle is provided at one end of the guide tube corresponding to the first spiral guide shaft, and a storage bin is provided on the guide tube corresponding to the second spiral guide shaft. The two ends of the guide tube are provided with drive devices that are respectively connected to the first spiral guide shaft and the second spiral guide shaft.

[0007] Preferably, the first spiral guide shaft and the second spiral guide shaft are connected by a connecting sleeve, and the two ends of the connecting sleeve are respectively provided with mounting holes corresponding to the first spiral guide shaft and the second spiral guide shaft.

[0008] Preferably, the end of the first spiral guide shaft extends out with an extension shaft, and the end of the second spiral guide shaft is provided with an assembly hole corresponding to the extension shaft.

[0009] Preferably, the guide tube includes a first tube section and a second tube section that are adapted to the first spiral guide shaft and the second spiral guide shaft respectively, and the first tube section and the second tube section are fixed together by a flange.

[0010] Preferably, both the first and second pipe sections are provided with end plates at their ends that are far apart from each other. The end plates are provided with through holes, and the first and second spiral guide shafts are provided with shoulders to stop the end plates.

[0011] Preferably, the outer diameter of the first spiral guide shaft is smaller than the outer diameter of the second spiral guide shaft.

[0012] Beneficial effects: This device is installed at the discharge port of the concrete mixing equipment. The finished concrete can be discharged through the first spiral guide shaft. A second spiral guide shaft is set up to cooperate with the first spiral guide shaft, thereby conveying the self-healing microcapsule particles to the first spiral guide shaft. While the first spiral guide shaft drives the concrete forward, the concrete and the self-healing microcapsule particles are conveyed and mixed in the middle of the guide tube, thereby simplifying the concrete production process and reducing the risk of damage to the self-healing microcapsule particles. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein: Figure 1 This is a simplified structural diagram of the conveyor in a specific embodiment of the present invention; Figure 2 This is a simplified cross-sectional view of the conveyor in a specific embodiment of the present invention.

[0014] In the diagram: 1. First pipe section; 2. Second pipe section; 3. Discharge nozzle; 4. Connecting nozzle; 5. Storage bin; 6. First spiral guide shaft; 7. Second spiral guide shaft. Detailed Implementation

[0015] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0016] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0018] like Figure 1 , 2 As shown, a screw conveyor for self-healing concrete is suitable for concrete transport in the construction of small and medium-sized buildings. It includes a guide pipe, a first screw guide shaft 6, a second screw guide shaft 7, a connecting nozzle 4, and a storage bin 5. The guide pipe is a metal pipe and is located below the concrete mixing equipment. The guide pipe is used for discharging finished concrete and also serves as a mixing chamber for self-healing microcapsule particles and concrete. The entire device is made of high-strength wear-resistant steel. The first spiral guide shaft 6 and the second spiral guide shaft 7 are respectively assembled at both ends of the guide pipe. Both the first spiral guide shaft 6 and the second spiral guide shaft 7 include a main shaft and a spiral plate extending spirally along the main shaft. The first spiral guide shaft 6 and the second spiral guide shaft 7 are rotatably connected, so that they can rotate independently and thus propel materials at different speeds. The guide pipe corresponding to the first spiral guide shaft 6 is provided with a connecting nozzle 4, which is connected to the discharge port of the concrete mixing equipment through a flange, so that the finished concrete is discharged through the first spiral guide shaft 6. The guide pipe corresponding to the second spiral guide shaft 7 is provided with a storage bin 5, which contains self-healing microcapsule particles. One end of the guide pipe corresponding to the first spiral guide shaft 6 extends to a preset pouring point, and a discharge nozzle 3 is provided below this end. Of course, the guide pipe can also extend to a hopper for concrete pouring.

[0019] At both ends of the guide pipe are drive devices that connect to the first spiral guide shaft 6 and the second spiral guide shaft 7, respectively. As the first spiral guide shaft 6 and the second spiral guide shaft 7 rotate independently, while the first spiral guide shaft 6 discharges the finished concrete, the second spiral guide shaft 7 guides the self-healing microcapsule particles in the storage bin 5 to the first spiral guide shaft 6. The first spiral guide shaft 6 can simultaneously discharge and guide the self-healing microcapsule particles and the finished concrete. During this process, the concrete and the self-healing microcapsule particles are conveyed and mixed by spiral propulsion. The two can be transported according to a predetermined ratio. While ensuring that the uniformity of the microcapsule particles in the self-healing concrete meets the construction requirements, the breakage rate of the microcapsule particles can be greatly reduced.

[0020] The diameters of the first spiral guide shaft 6 and the second spiral guide shaft 7 can be the same or have a diameter difference. When the diameters of the first spiral guide shaft 6 and the second spiral guide shaft 7 are the same, the rotation speed ratio of the first spiral guide shaft 6 and the second spiral guide shaft 7 is 100:1-100:5, so that one to five percent of self-healing microcapsule particles can be mixed into the finished concrete.

[0021] Furthermore, to avoid an excessively large difference in rotational speed between the first spiral guide shaft 6 and the second spiral guide shaft 7, the outer diameter of the first spiral guide shaft 6 can be designed to be larger than that of the second spiral guide shaft 7. Specifically, the main shaft diameters and pitches of the first spiral guide shaft 6 and the second spiral guide shaft 7 are the same, the outer diameter corresponding to the spiral plate of the first spiral guide shaft 6 is twice that of the spiral plate of the second spiral guide shaft 7, and the inner diameter of the guide tube is adapted to the first spiral guide shaft 6 and the second spiral guide shaft 7.

[0022] Since the self-healing microcapsule particles and concrete have similar material transport characteristics within the feed pipe, their material filling coefficients can be considered to be the same. The formula for calculating the volumetric conveying capacity V per unit time of the spiral feed shaft is: .

[0023] Where, πD 2 / 4: Cross-sectional area of ​​the spiral guide shaft (the guide tube and the spiral guide shaft are matched, the gap is small, and the influence of the gap on the cross-sectional area can be ignored); S: Pitch; ψ: Material filling coefficient; n: Spiral guide shaft speed.

[0024] In actual use, the driving device is a speed-regulating motor. The two speed-regulating motors drive the first spiral guide shaft 6 and the second spiral guide shaft 7 independently. The rotation speed of the first spiral guide shaft 6 and the second spiral guide shaft 7 can be calculated based on the volume ratio requirement of the self-healing microcapsule particles mixed into the finished concrete.

[0025] In an optional embodiment, the first spiral guide shaft 6 and the second spiral guide shaft 7 are connected by a connecting sleeve. The outer diameter of the connecting sleeve is smaller than the inner diameter of the guide tube so as not to affect the normal transmission of materials. The two ends of the connecting sleeve are respectively provided with mounting holes corresponding to the first spiral guide shaft 6 and the second spiral guide shaft 7. The mounting holes are provided with bearings corresponding to the main shafts of the first spiral guide shaft 6 and the second spiral guide shaft 7.

[0026] Alternatively, the main shaft end of the first spiral guide shaft 6 has an extension shaft extending out, and the main shaft end of the second spiral guide shaft is provided with an assembly hole corresponding to the extension shaft, and a bearing corresponding to the extension shaft is provided in the assembly hole.

[0027] Alternatively, a bushing corresponding to the connection between the first spiral guide shaft 6 and the second spiral guide shaft 7 is provided inside the guide tube. The two ends of the bushing are rotatably connected to the main shafts of the first spiral guide shaft 6 and the second spiral guide shaft 7, respectively. The outer wall of the bushing is supported on the inner wall of the guide tube by spokes, so as not to affect the normal conveying of materials.

[0028] Furthermore, to facilitate maintenance and assembly, the guide pipe includes a first pipe section 1 and a second pipe section 2 that are adapted to the first spiral guide shaft 6 and the second spiral guide shaft 7, respectively, and the first pipe section 1 and the second pipe section 2 are fixed together by flanges.

[0029] To ensure the compact assembly of the first spiral guide shaft 6 and the second spiral guide shaft 7, each of the two ends of the first tube section 1 and the second tube section 2 that are far apart from each other is provided with an end plate with a through hole. The first spiral guide shaft 6 and the second spiral guide shaft 7 are provided with shoulders that stop the end plates, thereby limiting the position of the first spiral guide shaft 6 and the second spiral guide shaft 7 in the axial direction and ensuring the stability of the rotational connection between the two.

[0030] 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 shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A screw conveyor for self-healing concrete, characterized in that, It includes a feed tube, a first spiral feed shaft, a second spiral feed shaft, a connecting nozzle, and a storage bin; The first and second spiral guide shafts are respectively mounted on both ends of the guide tube and are rotatably connected. The guide tube corresponding to the first spiral guide shaft is provided with the connecting nozzle, which is connected to the discharge port of the concrete mixing equipment. A discharge nozzle is provided at one end of the guide tube corresponding to the first spiral guide shaft, and a storage bin is provided on the guide tube corresponding to the second spiral guide shaft. The two ends of the guide tube are provided with drive devices that are respectively connected to the first spiral guide shaft and the second spiral guide shaft.

2. The screw conveyor for self-healing concrete according to claim 1, characterized in that, The first spiral guide shaft and the second spiral guide shaft are connected by a connecting sleeve, and the two ends of the connecting sleeve are respectively provided with mounting holes corresponding to the first spiral guide shaft and the second spiral guide shaft.

3. The screw conveyor for self-healing concrete according to claim 1, characterized in that, The first spiral guide shaft has an extension shaft extending from its end, and the second spiral guide shaft has an assembly hole corresponding to the extension shaft at its end.

4. A screw conveyor for self-healing concrete according to claim 1, characterized in that, The feed tube includes a first tube section and a second tube section that are adapted to the first spiral feed shaft and the second spiral feed shaft respectively, and the first tube section and the second tube section are fixed together by a flange.

5. A screw conveyor for self-healing concrete according to claim 4, characterized in that, Both the first and second pipe sections have end plates at their ends that are far apart from each other. The end plates have through holes, and the first and second spiral guide shafts have shoulders that stop the end plates.

6. A screw conveyor for self-healing concrete according to claim 1, characterized in that, The outer diameter of the first spiral guide shaft is smaller than the outer diameter of the second spiral guide shaft.

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