Mixing drum and mixing truck

Abstract

The utility model provides a kind of stirring drum and mixing truck, comprising: cylinder, for accommodating material to be stirred;Blade assembly, along the axis of cylinder spiral setting in the inner wall of cylinder;Material guiding cabin, set in cylinder and for material input or output cylinder;Material sealing mechanism, fixed in blade assembly and including spiral baffle and material sealing baffle, spiral baffle extends along the spiral line direction of blade assembly and and material sealing baffle enclose material sealing cavity, material sealing baffle is between spiral baffle and material guiding cabin, material sealing baffle is provided with avoidance slot relative to material guiding cabin, and make material sealing baffle and material guiding cabin form material guiding space.The utility model extends along the spiral line direction of blade assembly by spiral baffle and and material sealing baffle enclose material sealing cavity, and material sealing baffle is provided with avoidance slot relative to material guiding cabin, mechanical structure is simple, cost is lower, and can avoid material, make the in-out material efficiency of stirring drum higher.

Description

Technical Field

[0001] This utility model belongs to the field of concrete mixing technology, and in particular relates to a mixing drum and a mixer truck. Background Technology

[0002] Existing solutions for large-capacity mixing drums include adding a sealing device with a power and control system at the rear of the drum, and installing a material isolation chamber at the rear of the drum. Both solutions can increase the concrete loading capacity, but adding a power and control system is costly, structurally complex, and has multiple additional points of failure. On the other hand, the sealed structure of the material isolation chamber has multiple angles, which can easily lead to material accumulation. The small space between the chamber and the discharge port affects the feeding and discharging speed, resulting in low feeding and discharging efficiency. Utility Model Content

[0003] The main purpose of this utility model is to propose a mixing drum and a mixing truck, which aims to solve the technical problems of high cost and low feeding and discharging efficiency of the mixing drum in the prior art.

[0004] To achieve the above objectives, this utility model provides a mixing drum, comprising: a drum body for containing materials to be mixed; a blade assembly spirally disposed on the inner wall of the drum body along the axis of the drum body; a material guide chamber disposed within the drum body for inputting or outputting materials into or out of the drum body; and a sealing mechanism fixed to the blade assembly and including a spiral partition and a sealing baffle, wherein the spiral partition extends in the spiral direction of the blade assembly and forms a sealing cavity with the sealing baffle, the sealing baffle is located between the spiral partition and the material guide chamber, and the sealing baffle is provided with an avoidance groove relative to the material guide chamber, thereby forming a material guiding space between the sealing baffle and the material guide chamber.

[0005] In this embodiment of the invention, the blade assembly includes two sets of helical blades, which extend helically along the axis of the cylinder, and the two sets of helical blades are symmetrically arranged along the axis of the cylinder.

[0006] In this embodiment of the invention, the spiral partition is connected between the two sets of spiral blades, and the edge of the spiral partition is attached to the edge of the two sets of spiral blades.

[0007] In this embodiment of the utility model, the spiral partition is provided with a plurality of spiral exhaust holes, which are arranged sequentially at intervals along the spiral direction of the spiral partition.

[0008] In this embodiment of the utility model, the sealing baffle is provided with an anti-accumulation notch, which is located on the clearance groove near the rear end of the guide chamber.

[0009] In this embodiment of the utility model, the sealing baffle includes a sealing plate with an arc edge and a vertical plate spliced ​​with the sealing plate. The arc edge is fitted and connected to the edge of the blade assembly. The vertical plate is connected to the edge of the spiral partition. The sealing plate and the vertical plate form the clearance groove, and an exhaust notch is provided at the center of the clearance groove.

[0010] In this embodiment of the utility model, both the sealing plate and the vertical plate are provided with exhaust holes.

[0011] In this embodiment of the utility model, the vent hole provided on the sealing plate is a waist hole, and the long side of the waist hole can be perpendicular to the material liquid level during rotation; and / or, the vent hole provided on the vertical plate is a round hole.

[0012] In this embodiment of the invention, the included angle between the sealing plate and the vertical plate is an obtuse angle.

[0013] This utility model also proposes a mixer truck, which includes the mixing drum as described above.

[0014] Through the above technical solution, the stirring tank provided by this utility model embodiment has the following beneficial effects: In this embodiment, the spiral baffle is smoothly welded to the blade assembly inside the cylinder, resulting in smoother rotation of concrete within the sealing mechanism. This also significantly reduces the sharp angles between the sealing mechanism and the blade assembly, further lowering the risk of material accumulation between them. Furthermore, because the spiral baffle is welded to the spiral direction of the blade assembly, and the sealing baffle has a clearance groove relative to the guide chamber, the guiding space between the sealing baffle and the guide chamber is larger and more efficient, increasing the feed rate and improving the feeding efficiency of the mixing drum. Compared to existing power and control systems, the sealing mechanism is simpler in structure, lower in cost, requires no additional maintenance, and has higher mechanical reliability. In this invention, the mixing drum extends along the spiral direction of the blade assembly via the spiral baffle, forming a sealing cavity with the sealing baffle. The sealing baffle also has a clearance groove relative to the guide chamber, resulting in a simple mechanical structure, lower cost, and prevention of material accumulation, thus improving the feeding efficiency of the mixing drum.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1This is a schematic diagram of the structure of the stirring cylinder according to one embodiment of the present invention; Figure 2 This is a structural schematic diagram of the material guiding chamber and sealing mechanism in the mixing cylinder according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the sealing mechanism in the mixing drum according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the sealing baffle in the mixing drum according to one embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The stirring tank according to the present invention is described below with reference to the accompanying drawings.

[0020] like Figures 1 to 4 As shown in the embodiment of this utility model, the mixing drum 100 includes a drum body 1, a blade assembly 2, a material guide chamber 3, and a sealing mechanism 4. The drum body 1 is used to contain the material to be mixed. The blade assembly 2 is spirally arranged on the inner wall of the drum body 1 along the axis of the drum body 1. The material guide chamber 3 is disposed inside the drum body 1 and is used to input or output the material into or out of the drum body. The sealing mechanism 4 is fixed to the blade assembly 2 and includes a spiral partition 41 and a sealing baffle 42. The spiral partition 41 extends in the spiral direction of the blade assembly 2 and forms a sealing cavity 411 with the sealing baffle 42. The sealing baffle 42 is located between the spiral partition 41 and the material guide chamber 3. The sealing baffle 42 is provided with an avoidance groove 426 relative to the material guide chamber 3, and a material guide space 5 is formed between the sealing baffle 42 and the material guide chamber 3. Understandably, the mixing drum 100 in this embodiment is mainly used for concrete mixing and transportation. The material guide chamber 3 is located at the tail end of the drum body 1 and is connected to the opening of the drum body 1. Material can be fed into and out of the drum body 1 through the material guide chamber 3.

[0021] In this embodiment, the spiral baffle 41 is smoothly welded to the blade assembly 2 inside the cylinder 1, resulting in smoother rotation of the concrete within the sealing mechanism 4. This also significantly reduces the sharp angles between the sealing mechanism 4 and the blade assembly 2, further lowering the risk of material accumulation between them. Furthermore, because the spiral baffle 41 is welded to the spiral direction of the blade assembly 2, and the sealing baffle 42 has a clearance groove 426 relative to the guide chamber 3, the guide space 5 formed between the sealing baffle 42 and the guide chamber 3 is larger and more efficient, increasing the feed rate of the mixing drum 100 and improving feed efficiency. Moreover, compared to existing power and control systems, the sealing mechanism 4 has a simpler structure, lower cost, requires no additional maintenance, and boasts higher mechanical reliability. In this embodiment, the mixing drum 100 extends along the spiral direction of the blade assembly 2 through the spiral partition 41 and forms a sealing cavity 411 with the sealing baffle 42. The sealing baffle 42 is provided with an avoidance groove 426 relative to the guide chamber 3. The mechanical structure is simple, the cost is low, and it can avoid material accumulation, so that the feeding and discharging efficiency of the mixing drum 100 is high.

[0022] In this embodiment, by using a three-dimensional sealing mechanism 4 that smoothly fits the blade assembly 2, the concrete is concentrated inside the sealing mechanism 4 within the drum 1 during mixing and transportation. The sealing chamber 411 can increase the maximum liquid level, thereby increasing the concrete loading capacity and preventing spillage on uphill or bumpy roads, thus improving the economic efficiency of the mixer truck. Furthermore, compared to the large-capacity mixing drum 100 solution that adds power and control systems, the structure is simpler, more reliable, and lower in cost. Compared to the existing mixing drum 100 with an added material compartment, the structural design is more rational, reducing the risk of material accumulation, lowering weight and cost, and minimizing the impact on material feeding and discharging speeds.

[0023] It should be noted that the material guide chamber 3 is located at the tail end of the cylinder 1. The material guide chamber 3 may include a material guide sealing plate 32 and a material guide cylinder 31 arranged sequentially in the front-to-back direction. The material guide cylinder 31 may be a hollow column. The material guide sealing plate 32 may include two plates symmetrically arranged along the axis of the cylinder 1. The material guide sealing plate 32 may be provided with multiple air holes 321. When the concrete moves inside the material guide sealing plate 32, the pressure can be discharged from the air holes 321, ensuring the air pressure balance inside and outside the material guide sealing plate 32. Figure 1 As shown, the upper and lower ends of the material guide sealing plate 32 can be provided with V-shaped grooves that are recessed relative to the sealing mechanism 4, which can further increase the material guiding space 5 between the sealing mechanism 4 and the material guide chamber 3.

[0024] In one embodiment, such as Figure 1As shown, the blade assembly 2 includes two sets of helical blades 21. The helical blades 21 extend helically along the axis of the cylinder 1, and the two sets of helical blades 21 are symmetrically arranged along the axis of the cylinder 1. Each set of helical blades 21 includes multiple helical blades. By using the two sets of helical blades 21 symmetrically arranged along the axis of the cylinder 1, it can be ensured that the blade assembly 2 mixes the concrete more evenly during the rotation of the cylinder 1.

[0025] It should be noted that the spiral baffle 41 is connected between the two sets of spiral blades 21, and the edge of the spiral baffle 41 is in contact with the edge of the two sets of spiral blades 21. The spiral baffle 41 is installed between the two spiral blades 21 at the rear cone of the cylinder 1 and is connected to the sealing baffle 42 and the guiding baffle 32. The sealing baffle 42 is installed at the cylinder opening end of the spiral baffle 41 near the cylinder 1 and is connected to the guiding baffle 32. In one embodiment, both the spiral baffle 41 and the sealing baffle 42 can be connected by welding, bolting, or riveting using an arc plate. Both the spiral baffle 41 and the sealing baffle 42 can adopt an axisymmetric structure and be arranged along the axial direction of the cylinder 1.

[0026] like Figure 2 and Figure 3 As shown, the spiral baffle 41 is provided with multiple spiral vent holes 412, which are arranged at intervals along the spiral direction of the spiral baffle 41. The spiral baffle 41 can be composed of multiple separate plates welded together, each of which is provided with a spiral vent hole 412. The spiral vent holes 412 arranged at intervals along the spiral direction of the spiral baffle 41 ensure smooth venting during the rotation of the spiral baffle 41. In another embodiment, both the spiral baffle 41 and the sealing baffle 42 can have holes. When the concrete moves inside the cylinder 1, the pressure will be discharged from the holes, ensuring the air pressure balance inside and outside the cylinder 1.

[0027] It should be noted that the baffle plate can be welded from sheet metal, or it can be replaced by castings or stampings. In one embodiment, the spiral baffle 41 can be welded from arc-shaped sheet metal, or it can be welded from sheet metal of other polyhedral shapes, such as a groove. The sealing baffle 42 can be welded from flat sheet metal, or it can be welded from arc-shaped sheet metal. In one embodiment, the sealing baffle 42 can be welded from sheet metal, or it can be replaced by castings or stampings.

[0028] In the embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the sealing baffle 42 is provided with an anti-accumulation notch 421, which is located on the clearance groove 426 near the rear end of the guide chamber 3. In this embodiment, the anti-accumulation notch 421 is provided at the junction of the spiral baffle 41, the sealing baffle 42, and the guide sealing plate 32. This not only increases the theoretical exhaust area but also compensates for errors generated during the welding of the sealing mechanism 4 and prevents concrete from accumulating at the tip of the sealing mechanism 4. Figure 2As shown, the material guide plate 32 is provided with two V-shaped tips facing the sealing mechanism 4. The two V-shaped tips are connected to the sealing baffle 42, and the anti-accumulation notch 421 is provided corresponding to the V-shaped tips.

[0029] Specifically, the sealing baffle 42 includes a sealing plate 422 with an arc edge and a vertical plate 423 spliced ​​with the sealing plate 422. The arc edge is fitted and connected to the edge of the blade assembly 2. The vertical plate 423 is connected to the edge of the spiral partition 41. The sealing plate 422 and the vertical plate 423 form a clearance groove 426, and an exhaust notch 424 is provided at the center of the clearance groove 426. Figure 4 As shown, in one embodiment, the sealing baffle 42 may include four fan-shaped plates as sealing plates 422, the four fan-shaped plates being symmetrically arranged with respect to the axis of the cylinder 1, and two triangular plates as vertical plates 423, the two triangular plates being symmetrically arranged with respect to the axis of the cylinder 1. In the embodiment, the sealing baffle 42 is provided with an exhaust notch 424 at the center, which increases the theoretical exhaust area, can also make up for the error generated during the welding of the sealing baffle 42, and prevent concrete from accumulating at the tip of the sealing baffle 42.

[0030] In one embodiment, both the sealing plate 422 and the vertical plate 423 are provided with vent holes 425. Vent holes 425 are provided on all four fan-shaped plates and two vertical plates 423 to increase the venting area, ensuring that the sealing baffle 42 can always vent during rotation. The number of vent holes 425 on each plate can be set according to actual usage requirements.

[0031] It should be noted that the vent hole 425 on the sealing plate 422 is a waist-shaped hole, and the long side of the waist-shaped hole can be perpendicular to the material liquid level during rotation; and the vent hole 425 on the vertical plate 423 is a round hole. Figure 3 and Figure 4 As shown, the vent hole 425 on the sealing plate 422 is a long, narrow hole with a large area, which can ensure the venting area and improve the venting efficiency when the concrete liquid level is low. In addition, the length direction of the holes on the four fan-shaped plates is different, so that the vent hole 425 on different sealing plates 422 can be perpendicular to the material liquid level during the rotation of the cylinder 1, ensuring the venting efficiency of the vent hole 425.

[0032] In this embodiment of the invention, the included angle between the sealing plate 422 and the vertical plate 423 is an obtuse angle. In one embodiment, the included angle between the sealing plate 422 and the vertical plate 423 is greater than 90 degrees and less than 135 degrees, making the included angle between the sealing plate 422 and the vertical plate 423 an obtuse angle, thereby increasing the sealing space between the sealing plate 422 and the vertical plate 423.

[0033] This utility model also proposes a mixer truck, which includes the mixing drum 100 as described above. The specific structure of the mixing drum 100 is as described in the above embodiments. Since the mixer truck adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0034] A sealing mechanism 4 is arranged at the rear cone of the mixing drum 100. During the concrete mixing process, the sealing mechanism 4 can prevent concrete from overflowing and allow it to flow back into the mixing drum 100, increasing the maximum liquid level of concrete within the mixing drum 100. This prevents concrete from overflowing when going uphill or over bumpy roads, thereby increasing the concrete loading capacity of the mixer truck by up to 15%, improving transportation efficiency, and enhancing the economic benefits of mixer truck operation. It should be noted that the sealing mechanism 4 can be made of high-strength wear-resistant materials to extend its service life.

[0035] A concrete mixer truck equipped with a mixing drum 100, as described above, continuously rotates the drum 100 during operation. The blade assembly 2 drives the concrete to rotate, and under centrifugal force, the concrete overflows from the end of the blade assembly 2 away from the drum wall. Upon reaching the spiral baffle 41, it flows towards the sealing baffle 42 under the guidance of the spiral baffle 41. Under the obstruction of the sealing baffle 42, it flows back, enriching the concrete inside the sealing mechanism 4, raising the liquid level, and increasing the concrete loading capacity by up to 15%, thus improving transportation efficiency. The entire working process of the mixer truck is as follows: during loading, the concrete enters the drum 1 through the guide drum 31 and the guide sealing plate 32; during transportation, the concrete is mixed inside the drum 1 under the action of the blade assembly 2 and the sealing mechanism 4, maintaining homogeneity; during unloading, the concrete is discharged through the guide sealing plate 32 and the guide drum 31, driven by the rotation of the blade assembly 2.

[0036] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A stirring tank, characterized in that, The stirring tank (100) includes: The cylinder (1) is used to contain the material being stirred; The blade assembly (2) is spirally disposed on the inner wall of the cylinder (1) along the axis of the cylinder (1); The material guide chamber (3) is disposed inside the cylinder (1) and is used to input or output materials into or out of the cylinder (1). The sealing mechanism (4) is fixed to the blade assembly (2) and includes a spiral partition (41) and a sealing baffle (42). The spiral partition (41) extends in the spiral direction of the blade assembly (2) and forms a sealing cavity (411) with the sealing baffle (42). The sealing baffle (42) is located between the spiral partition (41) and the guide chamber (3). The sealing baffle (42) is provided with a clearance groove (426) relative to the guide chamber (3) and forms a guide space (5) between the sealing baffle (42) and the guide chamber (3).

2. The stirring tank according to claim 1, characterized in that, The blade assembly (2) includes two sets of helical blades (21), which extend helically along the axis of the cylinder (1) and are arranged symmetrically along the axis of the cylinder (1).

3. The stirring tank according to claim 2, characterized in that, The spiral partition (41) is connected between the two sets of spiral blades (21), and the edge of the spiral partition (41) is attached to the edge of the two sets of spiral blades (21).

4. The stirring tank according to claim 1, characterized in that, The spiral partition (41) is provided with a plurality of spiral exhaust holes (412), and the plurality of spiral exhaust holes (412) are arranged sequentially at intervals along the spiral direction of the spiral partition (41).

5. The stirring tank according to any one of claims 1 to 4, characterized in that, The sealing baffle (42) is provided with an anti-accumulation notch (421), which is located on the clearance groove (426) near the rear end of the guide chamber (3).

6. The stirring tank according to any one of claims 1 to 4, characterized in that, The sealing baffle (42) includes a sealing plate (422) with an arc edge and a vertical plate (423) spliced ​​with the sealing plate (422). The arc edge is attached to the edge of the blade assembly (2). The vertical plate (423) is connected to the edge of the spiral partition (41). The sealing plate (422) and the vertical plate (423) form the clearance groove (426), and an exhaust notch (424) is provided at the center of the clearance groove (426).

7. The stirring tank according to claim 6, characterized in that, Both the sealing plate (422) and the vertical plate (423) are provided with exhaust holes (425).

8. The stirring tank according to claim 7, characterized in that, The vent hole (425) provided on the sealing plate (422) is a waist hole, and the long side of the waist hole can be perpendicular to the material liquid level during rotation; And / or, The exhaust hole (425) provided on the vertical plate (423) is a round hole.

9. The stirring tank according to claim 7, characterized in that, The included angle between the sealing plate (422) and the vertical plate (423) is an obtuse angle.

10. A mixer truck, characterized in that, The mixer truck includes the mixing drum (100) as described in any one of claims 1 to 9.

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