A chute special for indoor single-sleeve mixer

Abstract

The utility model belongs to concrete conveying equipment technical field, and disclose a kind of chute special for indoor single couch axis mixer, including concrete chute body, concrete chute body is sequentially provided with mixer discharge end butt joint section, material receiving chute middle part and outlet flow guide section along material flow direction, increase level homogenization component on the surface of concrete chute body, and multiple level homogenization component can realize separation to concrete and carry out mixing design, break the segregation tendency of concrete, make coarse aggregate and powder fully mixed, improve the uniformity of concrete discharge, through the above scheme, it solves the traditional concrete chute more for integrated straight slot structure, when concrete flows in chute, due to the density difference of coarse aggregate and powder, segregation phenomenon of coarse aggregate subsidence, powder floating easily occurs, leading to concrete proportion imbalance, and then affect the strength accuracy of subsequent concrete test block production or the quality problem of prefabricated component.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete conveying equipment, specifically a special chute for an indoor single-shaft mixer. Background Technology

[0002] When unloading, indoor forced single-shaft concrete mixers typically use a chute to guide the concrete into a receiving container.

[0003] Traditional concrete chutes are mostly one-piece straight chute structures. When concrete flows in the chute, due to the density difference between coarse aggregate and powder, segregation phenomenon easily occurs, with coarse aggregate settling and powder floating. This leads to an imbalance in the concrete mix proportion, which in turn affects the strength accuracy of subsequent concrete test blocks or the quality of precast components. In addition, the sidewalls of traditional chutes are mostly designed at right angles, which easily leads to material accumulation and splashing during unloading, increasing the workload of subsequent cleaning. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a special chute for indoor single-shaft mixers, which features a multi-stage homogenization component in the middle of the chute to achieve dispersion and aggregation mixing of concrete, solving the segregation problem. At the same time, it optimizes the chute structure to reduce material accumulation and improve unloading efficiency and uniformity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a special chute for an indoor single-shaft mixer, comprising a concrete chute body, wherein the concrete chute body is provided with a mixer discharge end docking section, a receiving chute middle section and an outlet guide section in sequence along the material flow direction; A multi-stage homogenization assembly is fixedly installed on the inner wall of the middle part of the receiving chute. The multi-stage homogenization assembly includes a V-shaped main branch structure fixedly connected to the inner wall of the concrete chute body. The discharge end of the V-shaped main branch structure is connected to a V-shaped branch structure. An inverted V-shaped structure is provided below the V-shaped branch structure. A guide plate is fixed on the inner wall of the inverted V-shaped structure. Guide vanes are installed on both sides of the discharge end of the inverted V-shaped structure.

[0006] Preferably, the V-shaped main branch structure is symmetrically arranged, with a branch angle of 60°.

[0007] Preferably, the V-shaped branch structure and the V-shaped main branch structure are integrally formed, and the end of each set of V-shaped main branch structures is connected to two sets of V-shaped branch structures, and the branch angle of the V-shaped branch structures is 60°.

[0008] Preferably, the inverted V-shaped structure has an included angle of 90°, the guide plate is set to fit the inclined surface of the inverted V-shaped structure, and the guide plate is a polyurethane wear-resistant liner.

[0009] Preferably, the air deflector is inclined, and the angle between it and the bottom of the inverted V-shaped structure is 30°.

[0010] Preferably, the slope of the concrete chute body is between 20° and 60°, the top of the side flanges on both sides is rounded, and the inner wall of the concrete chute body is set as a smooth plane.

[0011] Preferably, the total length of the multi-stage homogenization component is 35cm, accounting for one-third of the length of the concrete chute body, and it is seamlessly connected to the inner wall of the concrete chute body. The wear-prone parts of the multi-stage homogenization component are inlaid with high-manganese steel linings, and the remaining parts are made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model adds a multi-stage homogenization component, which can separate concrete before mixing, breaking the segregation trend of concrete, making coarse aggregate and powder fully mixed, improving the uniformity of concrete discharge, ensuring the quality of subsequent concrete products, and the overall structure is compact and can be directly connected to an indoor forced single-shaft concrete mixer without major modifications to existing equipment.

[0013] 2. This utility model eliminates right-angle dead corners by using a rounded transition treatment on the chute edge. Combined with the slope design with an adjustable cleaning angle, it reduces the probability of material adhesion and jamming, reduces the amount of cleaning work, and is convenient to install and use. The leveling component is made of a composite material of high manganese steel and stainless steel, and high manganese steel lining is embedded in easily worn parts to extend the overall service life. The one-piece molded structure design ensures the stability of the connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the material crossing structure of this utility model; Figure 3 This is a schematic diagram of the structure of the guide plate of this utility model; Figure 4 This is a schematic diagram of the inclined air guide vane structure of this utility model; Figure 5 This is a schematic diagram of the inverted V-shaped structure of this utility model, showing the flow of the outlet towards the guide vane.

[0015] In the diagram: 1. Concrete chute body; 11. Mixer discharge end connection section; 12. Middle part of receiving chute; 13. Outlet guide section; 2. Multi-stage homogenization components; 21. V-shaped main branch structure; 22. V-shaped branch structure; 23. Inverted V-shaped structure; 24. Deflector plate; 25. Deflector vane. Detailed Implementation

[0016] 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.

[0017] like Figures 1 to 5 As shown, this utility model provides a special chute for an indoor single-shaft mixer, including a concrete chute body 1. The concrete chute body 1 is provided with a mixer discharge end docking section 11, a receiving chute middle section 12 and an outlet guide section 13 in sequence along the material flow direction. A multi-stage homogenization component 2 is fixedly installed on the inner wall of the middle part 12 of the receiving chute. The multi-stage homogenization component 2 includes a V-shaped main branch structure 21 fixedly connected to the inner wall of the concrete chute body 1. A V-shaped branch structure 22 is connected to the discharge end of the V-shaped main branch structure 21. An inverted V-shaped structure 23 is provided below the V-shaped branch structure 22. A guide plate 24 is fixed on the inner wall of the inverted V-shaped structure 23. Guide vanes 25 are installed on both sides of the discharge end of the inverted V-shaped structure 23.

[0018] In this example, before the multi-stage homogenization component 2 is installed on the surface of the concrete chute body 1, the concrete will flow directly from the inclined surface of the concrete chute body 1. During the flow, due to the inconsistent density of powder and aggregate in the concrete, segregation occurs during the downward movement. To address this issue, a multi-stage homogenization component 2 is added. As the concrete slides along the concrete chute body 1, it encounters a V-shaped main branch structure 21 for diversion, breaking the original initial distribution of concentrated coarse aggregate in the center and excessive powder at the edges. After passing through the V-shaped branch structure 22, the previous two-component flow is transformed into a four-component flow. The two main material flows are then further divided into four fine streams by secondary branches. At this point, coarse aggregate, stone powder, and slurry are initially mixed in each fine stream. Furthermore, the blocking effect of the multi-stage branch plate slows down the falling speed of the material, prolonging the residence time of the material in the concrete chute body 1 and reserving buffer space for subsequent convergence and mixing. Simultaneously, due to their large mass and high falling speed, the coarse aggregate separates from the powder. The lower layer of coarse aggregate, due to its greater weight and higher speed, will first impact the two inclined surfaces of the inverted V-shaped structure 23, changing its original vertical downward trajectory. Instead of sliding straight down, it will extend along the sides of the inverted V-shaped structure 23 and surge upwards at an angle. In other words, although the powder in the upper layer of concrete is lighter and slower, it will also be carried by the impact of the coarse aggregate or blocked by the inclined surfaces, changing its direction from floating to falling downwards at an angle. This step breaks the previous layered inertia where the coarse aggregate only sinks and the powder only floats upwards, forcing the two materials to intersect. The coarse aggregate on the left is guided to surge upwards to the right, and the coarse aggregate on the right is guided to surge upwards to the left, while the upper layer of powder is guided to fall downwards towards the center. Thus, the upward-rushing coarse aggregate and the downward-falling powder will converge at the inverted V-shaped structure 23. The direct collision near the top of the mold causes the gaps between the coarse aggregates to be filled with powder during the extrusion process. At the same time, the powder is carried away by the coarse aggregates and will no longer drift away due to its lightness. Moreover, the cement paste in the concrete is sticky and will act like glue to stick the coarse aggregates and powder together during extrusion, further preventing separation.

[0019] Specifically, the V-shaped main branch structure 21 is symmetrically arranged, with a branch angle of 60°. The 60° angle can disperse the material into three uniform fine streams, avoiding uneven distribution.

[0020] Furthermore, the V-shaped branch structure 22 and the V-shaped main branch structure 21 are integrally formed. Each set of V-shaped main branch structures 21 is connected to two sets of V-shaped branch structures 22 at its end, and the branch angle of the V-shaped branch structures 22 is 60°.

[0021] Furthermore, the inverted V-shaped structure 23 has an included angle of 90°. The 90° included angle allows multiple fine streams to form a counter-pressure and extrusion, resulting in the best mixing effect. The guide plate 24 is set to fit the inclined surface of the inverted V-shaped structure 23. The guide plate 24 is a polyurethane wear-resistant liner, which takes into account both elasticity and wear resistance.

[0022] It is worth noting that the guide vane 25 is set at an angle, with an angle of 30° between it and the bottom of the inverted V-shaped structure 23, which guides the converged material to flow smoothly to the outlet of the concrete chute body 1, avoiding secondary stratification.

[0023] It is worth noting that the slope of the concrete chute body 1 is between 20° and 60°, and the top of the side walls on both sides is rounded. The material flow direction is slowly transitioned, and the material can move forward at a more uniform speed, reducing local accumulation. Even if a small amount of material temporarily contacts the rounded surface, and the inner wall of the concrete chute body 1 is set as a smooth plane, it will slide down under the push of subsequent materials or its own gravity, and will not form a stable accumulation layer.

[0024] It is worth mentioning that the total length of the multi-stage homogenization component 2 is 35cm. It is seamlessly connected to the inner wall of the concrete chute body 1. The wear-prone parts of the multi-stage homogenization component 2 are inlaid with high manganese steel lining, while the rest are made of stainless steel. The high manganese steel lining in the wear-prone parts extends the overall service life, and the one-piece molded structure design ensures the stability of the connection.

[0025] The concrete chute body 1 is existing technology and will not be described in detail here. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this patent and will not be described in detail here. The "front, back, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0026] Working principle: Connect the discharge end section 11 of the concrete chute body 1 to the discharge port of the indoor forced single-shaft concrete mixer, and adjust the tilt angle of the concrete chute body 1 according to the characteristics of the concrete. For viscous concrete, the tilt angle needs to be increased to prevent the concrete from sticking to the surface of the concrete chute body 1. For concrete with high water content, the tilt angle of the concrete chute body 1 needs to be reduced to avoid segregation of the concrete due to excessive tilt angle in the traditional sense. After the angle of the concrete chute body 1 is adjusted, the concrete is discharged from the mixer and first enters the discharge end docking section 11 of the mixer, and then flows into the middle part 12 of the receiving chute. When the concrete flows through the V-shaped main branch structure 21, it is divided into two symmetrical material flows, and then further divided into four thin streams by the V-shaped branch structure 22, breaking the initial stratification state of coarse aggregate and powder. When the thin stream falls to the inverted V-shaped structure 23, it is guided by the guide plate 24 to cross and collide and squeeze, and the coarse aggregate and powder are fully mixed. Finally, it is smoothly introduced into the outlet guide section 13 through the guide vane 25 to complete the uniform unloading. At the same time, the chute slope adjusted beforehand ensures smooth material flow, and the rounded edge effectively reduces material accumulation and splashing.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chute specifically for an indoor single-shaft mixer, comprising a concrete chute body (1), characterized in that: The concrete chute body (1) is provided with a mixer discharge end docking section (11), a receiving chute middle section (12) and an outlet guide section (13) in sequence along the material flow direction. A multi-stage homogenization component (2) is fixedly installed on the inner wall of the middle part (12) of the receiving chute. The multi-stage homogenization component (2) includes a V-shaped main branch structure (21) fixedly connected to the inner wall of the concrete chute body (1). The discharge end of the V-shaped main branch structure (21) is connected to a V-shaped branch structure (22). An inverted V-shaped structure (23) is provided below the V-shaped branch structure (22). A guide plate (24) is fixed on the inner wall of the inverted V-shaped structure (23). Guide vanes (25) are installed on both sides of the discharge end of the inverted V-shaped structure (23).

2. The chute for an indoor single-shaft mixer according to claim 1, characterized in that: The V-shaped main branch structure (21) is symmetrically arranged, and its branch angle is 60°.

3. The chute for an indoor single-shaft mixer according to claim 1, characterized in that: The V-shaped branch structure (22) and the V-shaped main branch structure (21) are integrally formed. Each V-shaped main branch structure (21) has two V-shaped branch structures (22) connected to its end. The branch angle of the V-shaped branch structure (22) is 60°.

4. The chute for an indoor single-shaft mixer according to claim 1, characterized in that: The inverted V-shaped structure (23) has an included angle of 90°, and the guide plate (24) is set to fit the inclined surface of the inverted V-shaped structure (23). The guide plate (24) is a polyurethane wear-resistant liner.

5. A special chute for an indoor single-shaft mixer according to claim 1, characterized in that: The guide vane (25) is set at an angle, and the angle between it and the bottom of the inverted V-shaped structure (23) is 30°.

6. A special chute for an indoor single-shaft mixer according to claim 1, characterized in that: The slope of the concrete chute body (1) is between 20° and 60°, the top of the side walls on both sides are rounded, and the inner wall of the concrete chute body (1) is set as a smooth plane.

7. A special chute for an indoor single-shaft mixer according to claim 1, characterized in that: The total length of the multi-stage homogenization component (2) is 35cm, which occupies one-third of the length of the concrete chute body (1). It is seamlessly connected to the inner wall of the concrete chute body (1). The wear-prone parts of the multi-stage homogenization component (2) are inlaid with high manganese steel lining, and the rest are made of stainless steel.

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