A concrete mixing device to prevent sedimentation

Abstract

This invention provides a concrete mixing device for preventing sedimentation, belonging to the field of concrete mixing technology. It includes a vertical cylindrical low-speed mixing assembly, with an anti-settling plate fixedly installed on the mixing shaft assembly. The anti-settling plate comprises a sleeve and an arc-shaped plate, the arc-shaped plate being fixedly connected to the outside of the sleeve, and the arc-shaped plate including an integrally formed rising section and a falling section. This invention, through the design of the anti-settling plate, allows it to rotate with the mixing shaft assembly. The arc-shaped plate of the anti-settling plate includes integrally formed rising and falling sections. Concrete moves upward along the rising section of the anti-settling plate and then descends along the falling section, remixing with the liquid exposed below the anti-settling plate, thus preventing concrete sedimentation and achieving a good anti-settling effect.

Description

Technical Field

[0001] This utility model relates to the field of concrete mixing technology, specifically to a concrete mixing device that prevents sedimentation. Background Technology

[0002] Material sedimentation during concrete mixing has always been a key challenge affecting mixing quality and construction safety. Concrete consists of multiple components, including cement, coarse and fine aggregates, water, and admixtures. Due to the differences in density among these materials (sand and gravel density is approximately 2.6 g / cm³), sedimentation can occur. 3 Cement is approximately 3.1 g / cm³. 3 During the stirring process, sedimentation and stratification are very likely to occur.

[0003] Traditional concrete mixers (such as gravity-fed and forced-mix mixers) rely on the mechanical force generated by the rotation of blades to mix materials. When the mixing speed is below the critical value (usually <30 r / min) or when the machine is stopped to wait for materials, heavy aggregates such as sand and gravel will quickly settle to the bottom of the mixing drum, forming a sediment layer with a thickness of 10-20 cm, while cement paste will float to the top, resulting in a "thin on top, thick on bottom" segregation phenomenon in the concrete mixture. This sedimentation problem directly leads to the deterioration of concrete performance: excessive aggregate in the sedimentation zone reduces the slump of the concrete by 30%-50%, and easily causes pipeline blockage during pumping; in the cement paste-rich zone, due to the imbalance of water-cement ratio, the risk of shrinkage cracking after hardening increases by more than 40%. Therefore, it is necessary to design a concrete mixing device to prevent sedimentation. Utility Model Content

[0004] To address the problem of concrete sedimentation affecting usability, this invention provides a concrete mixing device that prevents sedimentation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A concrete mixing device for preventing sedimentation includes a vertical cylindrical low-speed mixing assembly, wherein an anti-settling plate is fixedly installed on the mixing shaft assembly of the vertical cylindrical low-speed mixing assembly, and the anti-settling plate is close to the inner bottom of the mixing cylinder of the vertical cylindrical low-speed mixing assembly.

[0007] The anti-deposition plate includes:

[0008] A sleeve, which is fixedly installed with the stirring shaft assembly;

[0009] An arc-shaped plate is fixedly connected to the outside of the sleeve, and the arc-shaped plate includes an integrally formed rising section and a falling section.

[0010] As a further description of the above technical solution:

[0011] The stirring speed of the vertical cylindrical low-speed stirring component is less than 30 r / min.

[0012] As a further description of the above technical solution:

[0013] The vertical cylindrical low-speed stirring assembly includes:

[0014] A stirring drum, wherein the top of the stirring drum is open;

[0015] A stirring shaft assembly is rotatably mounted at the center of the inner bottom of the stirring drum, and the bottom end of the stirring shaft assembly penetrates through the inner bottom of the stirring drum.

[0016] A stirring motor is fixedly installed with the stirring drum, and the output end of the stirring motor is connected to the stirring shaft assembly through a transmission assembly.

[0017] As a further description of the above technical solution:

[0018] The transmission component is a speed reduction transmission.

[0019] As a further description of the above technical solution:

[0020] The transmission assembly includes:

[0021] A first pulley is fixedly mounted on the output shaft of the stirring motor;

[0022] A second pulley is fixedly mounted on the stirring shaft assembly;

[0023] A belt assembly is installed between two pulleys, and the diameter of the second pulley is larger than the diameter of the first pulley.

[0024] As a further description of the above technical solution:

[0025] The stirring shaft assembly includes:

[0026] Shaft body;

[0027] A stirring component is fixedly installed on a shaft, and the stirring component is provided with multiple layers along the length direction of the shaft.

[0028] The stirring component includes a connecting cylinder, side blades, and vertical blades. The side blades are horizontally fixedly connected to the outside of the connecting cylinder, and the vertical blades are fixedly installed on the side blades.

[0029] As a further description of the above technical solution:

[0030] The bottom of the arc-shaped plate is fixedly connected with reinforcing ribs.

[0031] As a further description of the above technical solution:

[0032] The gap between the outer side of the arc-shaped plate and the inner wall of the mixing cylinder is less than 1 cm, and the gap between the bottom of the arc-shaped plate and the inner bottom of the mixing cylinder is less than 1 cm.

[0033] The beneficial effects of this utility model are:

[0034] This invention, through the design of an anti-settling plate, rotates with the mixing shaft assembly. The arc-shaped plate of the anti-settling plate includes an integrally set rising section and a falling section. The concrete moves upward along the rising section of the anti-settling plate and then falls down along the falling section of the anti-settling plate, remixing with the liquid exposed from below the anti-settling plate, thus avoiding concrete deposition and achieving a good anti-settling effect. Attached Figure Description

[0035] The following figures illustrate a concrete mixing device designed to prevent sedimentation more clearly.

[0036] Figure 1 This is a perspective view of the present utility model;

[0037] Figure 2 This is a front view of the present invention;

[0038] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0039] Figure 4 This is a schematic diagram of the anti-deposition plate of this utility model.

[0040] The labels in the attached diagram;

[0041] 100. Mixing drum; 200. Mixing motor; 300. Transmission assembly; 301. First pulley; 302. Second pulley; 303. Belt assembly; 400. Mixing shaft assembly; 401. Shaft body; 402. Mixing component; 4021. Connecting cylinder; 4022. Side blade; 4023. Vertical blade; 500. Anti-settling plate; 501. Sleeve; 502. Arc plate; 5021. Rising section; 5022. Falling section; 503. Reinforcing rib. Detailed Implementation

[0042] Please refer to the attached document. Figures 1-4 This application illustrates a concrete mixing device for preventing sedimentation, used to mix concrete or maintain the uniformity of the mixed concrete (to prevent sedimentation). Specifically, it includes a vertical cylindrical low-speed mixing assembly. An anti-settling plate 500 is fixedly installed on the mixing shaft assembly 400 of the vertical cylindrical low-speed mixing assembly. The anti-settling plate 500 is close to the inner bottom of the mixing drum 100 of the vertical cylindrical low-speed mixing assembly.

[0043] The anti-settling plate 500 rotates with the stirring shaft assembly 400. The anti-settling plate 500 specifically includes a sleeve 501 and an arc-shaped plate 502.

[0044] The sleeve 501 is fixedly installed with the stirring shaft assembly 400. The sleeve 501 is generally sleeved on the stirring shaft assembly 400, and a threaded hole is opened on the stirring shaft assembly 400. A screw is used to pass through the round hole on the sleeve 501 and then installed into the threaded hole to fix the sleeve 501 and the stirring shaft assembly 400 together. The arc plate 502 is fixedly connected to the outside of the sleeve 501, and the arc plate 502 includes an integrally formed rising section 5021 and a falling section 5022.

[0045] First, it's important to understand that sedimentation typically occurs when solids are at the bottom and water or liquids are at the top. Therefore, to prevent sedimentation, the positions of the solids and liquids at the bottom need to be interchanged to remix them. In this solution, the anti-sedimentation plate 500 rotates, and the concrete moves upward along the rising section 5021 of the anti-sedimentation plate 500. The concrete then descends along the falling section of the anti-sedimentation plate 500, remixing with the liquid exposed below the anti-sedimentation plate 500, thus preventing concrete sedimentation and achieving a good anti-sedimentation effect.

[0046] For example, in the process of concrete pumping construction, the mixer truck injects concrete into the bottom of the mixing drum 100 of the vertical cylindrical high-speed mixing component, and relies on the mixing of the vertical cylindrical high-speed mixing component and the mixing of the anti-settling plate 500 to prevent the concrete from settling.

[0047] In one embodiment, the vertical cylindrical low-speed mixing component has a mixing speed of less than 30 r / min. Low-speed mixing saves energy and can work for a long time during concrete construction.

[0048] In one embodiment, the vertical cylindrical low-speed stirring assembly includes: a stirring drum 100, a stirring shaft assembly 400, a stirring motor 200, and a transmission assembly 300.

[0049] The top of the mixing drum 100 is open, and the stirring shaft assembly 400 is rotatably installed at the center of the inner bottom of the mixing drum 100. The bottom end of the stirring shaft assembly 400 penetrates the inner bottom of the mixing drum 100. The stirring motor 200 is fixedly installed with the mixing drum 100, and the output end of the stirring motor 200 is connected to the stirring shaft assembly 400 through the transmission assembly 300.

[0050] The stirring motor 200 is generally a geared motor, which drives the transmission assembly 300 as a power component, and then drives the stirring shaft assembly 400 to rotate. The stirring shaft assembly 400 stirs the material inside the stirring drum 100.

[0051] In one embodiment, the transmission component 300 is a speed reduction transmission, which enables the stirring speed of the stirring shaft assembly 400 to be less than 30 r / min.

[0052] In one embodiment, the transmission assembly 300 includes: a first pulley 301 fixedly mounted on the output shaft of the stirring motor 200, a second pulley 302 fixedly mounted on the stirring shaft assembly 400, and a belt 303 installed between the first pulley 301 and the first pulley 302. The diameter of the second pulley 302 is larger than the diameter of the first pulley 301. The whole assembly realizes speed reduction transmission, and the belt pulley transmission has low noise and smooth transmission.

[0053] In one embodiment, the stirring shaft assembly 400 includes a shaft body 401 and a stirring element 402 fixedly mounted on the shaft body 401. The stirring element 402 is provided with multiple layers along the length direction of the shaft body 401 so that it can fully stir the upper and lower layers.

[0054] The specific stirring component 402 includes: a connecting cylinder 4021, a side blade 4022, and a vertical blade 4023. The side blade 4022 is horizontally fixedly connected to the outside of the connecting cylinder 4021, and the vertical blade 4023 is fixedly installed on the side blade 4022.

[0055] Both the side blade 4022 and the vertical blade 4023 participate in the mixing of concrete, resulting in better mixing effect.

[0056] In one embodiment, a reinforcing rib 503 is fixedly connected to the bottom of the arc plate 502 to increase the structural stability of the arc plate 502 and prevent large deformation of the arc plate 502 during use.

[0057] In one embodiment, the gap between the outer side of the arc plate 502 and the inner wall of the stirring cylinder 100 is less than 1 cm, and the gap between the bottom of the arc plate 502 and the inner bottom of the stirring cylinder 100 is less than 1 cm, so as to prevent solid particles from falling from the gap and ensure the effect of use.

[0058] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0059] It should be understood that relational terms such as "first" and "second" are used merely 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. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A sedimentation-preventing concrete mixing device, comprising a vertical shaft low-speed mixing assembly, characterized in that: a sedimentation-preventing plate (500) is fixedly installed on a mixing shaft assembly (400) of the vertical shaft low-speed mixing assembly, and the sedimentation-preventing plate (500) is close to an inner bottom of a mixing drum (100) of the vertical shaft low-speed mixing assembly; the sedimentation-preventing plate (500) comprises: a sleeve (501) fixedly installed with the mixing shaft assembly (400); and an arc-shaped plate (502) fixedly connected to an outer side of the sleeve (501) and comprising an integral rising section (5021) and a falling section (5022). The mixing speed of the vertical shaft low-speed mixing assembly is less than 30 r / min. The vertical shaft low-speed mixing assembly comprises: the mixing drum (100) with an open top end; the mixing shaft assembly (400) rotatably installed at a central position of an inner bottom of the mixing drum (100) and having a bottom end penetrating through the inner bottom of the mixing drum (100); and a mixing motor (200) fixedly installed with the mixing drum (100) and having an output end drivingly connected with the mixing shaft assembly (400) through a transmission assembly (300). The transmission assembly (300) is a speed-reducing transmission. The transmission assembly (300) comprises: a first pulley (301) fixedly installed on an output shaft of the mixing motor (200); a second pulley (302) fixedly installed on the mixing shaft assembly (400); and a belt member (303) installed between the first pulley (301) and the second pulley (302), wherein the second pulley (302) has a diameter greater than that of the first pulley (301).

2. An anti-deposition concrete mixing apparatus as claimed in claim 1, wherein: The mixing shaft assembly (400) comprises: a shaft body (401); and a plurality of mixing members (402) fixedly installed on the shaft body (401) and arranged along a length direction of the shaft body (401).

3. A depositions preventing concrete mixing apparatus as claimed in claim 1 wherein, The mixing member (402) comprises: a connecting cylinder (4021); a lateral leaf (4022) fixedly connected to an outer side of the connecting cylinder (4021); and a vertical leaf (4023) fixedly installed on the lateral leaf (4022). A reinforcing rib (503) is fixedly connected to a bottom of the arc-shaped plate (502). A gap between an outer side of the arc-shaped plate (502) and an inner side wall of the mixing drum (100) is less than 1 cm, and a gap between a bottom of the arc-shaped plate (502) and an inner bottom of the mixing drum (100) is less than 1 cm. ​ 4. A depositions preventing concrete mixing apparatus as claimed in claim 3 wherein: ​ 5. A depositions preventing concrete mixing apparatus as claimed in claim 4 wherein: ​ ​ ​ ​ 6. A depositions preventing concrete mixing apparatus as claimed in claim 5 wherein, ​ ​ ​ ​ 7. A depositions preventing concrete mixing apparatus as claimed in claim 1 wherein: ​ 8. A depositions preventing concrete mixing apparatus as defined in claim 1 wherein: ​

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