Microcellular foaming forming machine for heat-insulating stone-chip-resistant coating

Abstract

The utility model relates to the technical field of coating production equipment, in particular to a microcellular foaming forming machine for a heat-preservation stone-chip-resistant coating. Comprising a mixing stirrer, raw material storage tanks connected with the interior of the mixing stirrer through pipelines, a plurality of metering pumps arranged on the pipelines and in one-to-one correspondence with the raw material storage tanks and a gas introduction device connected with the interior of the mixing stirrer, and a rotating shaft is arranged in the mixing stirrer through a driving device; three layers of blades of a spiral structure are sequentially arranged on the rotating shaft in the axial direction of the rotating shaft, and sawteeth are arranged on the edges of the front ends of the blades. By optimizing the paddle, the efficient stirring and mixing of the coating are realized, and better conditions are provided for foaming, so that the foaming effect of the coating is greatly improved.

Description

A microporous foaming molding machine for thermal insulation and stone impact resistant coating Technical Field

[0001] This utility model relates to the field of coating production equipment technology, and in particular to a microporous foaming molding machine for thermal insulation and stone impact resistant coating. Background Technology

[0002] Currently, thermal insulation and stone-impact resistant coatings are increasingly widely used in numerous industrial sectors such as automobile manufacturing, aerospace, and construction. These coatings not only provide excellent thermal insulation performance and reduce energy loss, but also effectively resist external impacts such as stone chips, protecting the substrate from damage. However, existing microporous foaming molding machines for thermal insulation and stone-impact resistant coatings on the market have certain shortcomings in the mixing process. Traditional stirring blades have simple structures, making it difficult to fully and evenly mix various raw materials during the mixing process, resulting in poor foaming effects and unstable coating performance. Furthermore, the interaction between the blades and the raw materials during mixing is not ideal, failing to generate sufficient shear force and turbulence, affecting the foaming quality and production efficiency of the coating. Therefore, developing a microporous foaming molding machine for thermal insulation and stone-impact resistant coatings with efficient mixing capabilities is of significant practical importance. Summary of the Invention

[0003] Therefore, in view of the above problems, this utility model proposes a microporous foaming molding machine for thermal insulation and stone impact resistant coating.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a microporous foaming molding machine for heat-insulating and stone-impact-resistant coating, comprising a mixing agitator, a raw material storage tank connected to the inside of the mixing agitator via a pipeline, a plurality of metering pumps disposed on the pipeline and corresponding one-to-one with each of the raw material storage tanks, and a gas introduction device connected to the inside of the mixing agitator. The mixing agitator is provided with a rotating shaft by a driving device, and three layers of helical blades are arranged sequentially along the axial direction of the rotating shaft, the front edge of the blades having serrations.

[0005] A further improvement is made, wherein the tooth tip angle of the saw teeth is 60°-90°.

[0006] Further improvements include a saw tooth height of 2-4 mm and a tooth pitch of 3-6 mm.

[0007] As a further improvement, the surface of the blade is uniformly distributed with diamond-shaped pits.

[0008] In a further improvement, the side length of the rhomboid recess is 3-6mm, the depth is 1-3mm, and the spacing between adjacent rhomboid recesses is 5-10mm.

[0009] In a further improvement, the four inner corners of the rhomboid recess are all rounded, with a radius of 0.5-1mm.

[0010] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This utility model achieves efficient stirring and mixing of coatings by optimizing the paddle blades, providing better conditions for foaming, thereby greatly improving the foaming effect of the coatings. Specifically, the serrated edge design of the impeller in this invention increases the contact area and shear force between the impeller and the raw materials during mixing, making the raw materials easier to disperse and mix, thus greatly improving the mixing effect. Simultaneously, the angle range of the serrated tooth apex angle ensures that the serrations provide sufficient shear force while maintaining the structural strength of the impeller, preventing damage due to excessive force during mixing. Furthermore, the appropriate tooth height and tooth pitch allow the serrations to function better, promoting the mixing and dispersion of raw materials and further improving mixing efficiency. Furthermore, the presence of the rhomboid recesses increases the surface roughness of the impeller, generating more turbulence during mixing, further promoting the mixing of raw materials, and also playing a role in breaking up air bubbles, resulting in more uniform foaming. At the same time, the size of the rhomboid recesses maximizes their mixing and foaming effects while ensuring the structural strength of the impeller. Furthermore, the four inner corners of the rhomboid recesses are rounded, reducing material residue within the recesses, facilitating the flow and mixing of raw materials within the recesses, and preventing stress concentration during mixing, thus extending the service life of the impeller. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the mixing stirrer of this utility model;

[0012] Figure 2 is an enlarged view of point A in Figure 1.

[0013] icon:

[0014] 1. Mixing agitator; 2. Rotating shaft; 3. Blade; 31. Serrated edge; 32. Diamond-shaped pit. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] Referring to Figures 1-2, this embodiment provides a microporous foaming molding machine for thermal insulation and stone impact-resistant coatings, including a mixing mixer 1, a raw material storage tank connected to the inside of the mixing mixer 1 via a pipe, multiple metering pumps mounted on the pipe and corresponding to each of the raw material storage tanks, and a gas introduction device connected to the inside of the mixing mixer 1. The mixing mixer 1 has a rotating shaft 2 installed inside via a drive device. Three layers of helical blades 3 are sequentially arranged along the axial direction of the rotating shaft 2. To increase the contact area and shear force between the blades 3 and the raw materials during mixing, making the raw materials easier to disperse and mix, and greatly improving the mixing effect, the front edge of the blades 3 has serrations 31. Simultaneously, to ensure that the serrations 31 provide sufficient shear force while maintaining the structural strength of the blades 3, preventing damage due to excessive force during mixing, promoting the mixing and dispersion of the raw materials, and further improving mixing efficiency, the serrations 31 have a tooth tip angle of 75°, a tooth height of 3mm, and a tooth pitch of 4.5mm.

[0017] In this embodiment, to further promote the mixing of raw materials and also to break up air bubbles to make foaming more uniform, the surface of the impeller 3 is uniformly distributed with rhomboid pits 32. The side length of each rhomboid pit 32 is 4.5 mm, the depth is 2 mm, the distance between adjacent rhomboid pits 32 is 7.5 mm, and the four inner corners of each rhomboid pit 32 are rounded with a radius of 0.75 mm. The size and shape of the rhomboid pits 32 can maximize the stirring and foaming effect of the rhomboid pits 32 while ensuring the structural strength of the impeller 3. At the same time, it reduces the residue of materials in the rhomboid pits 32, which is conducive to the flow and mixing of raw materials in the pits. It also avoids stress concentration during stirring and improves the service life of the impeller 3.

[0018] This invention optimizes the paddle 3 to achieve efficient mixing of the coating, providing better conditions for foaming and thus greatly improving the foaming effect of the coating.

[0019] During operation, various raw materials are precisely metered from the raw material storage tank by a metering pump and then enter the mixing agitator 1. A gas inlet device introduces gas into the mixing agitator 1. The drive device drives the rotating shaft 2 to rotate, and the blades 3 rotate accordingly. The serrated edges 31 and the diamond-shaped pits 32 thoroughly mix the raw materials, making them evenly dispersed and generating uniform bubbles, ultimately completing the foaming of the thermal insulation and stone chip resistance coating.

[0020] In practical applications, the blades 3 are not limited to three layers. The number and layers of blades 3 can be flexibly adjusted according to actual needs to meet different production scales and process requirements.

[0021] In practical applications, the apex angle of the serration 31 is preferably 60°-90°, the tooth height of the serration 31 is preferably 2-4mm, the tooth pitch is preferably 3-6mm, the side length of the rhomboid recess 32 is preferably 3-6mm, the depth is preferably 1-3mm, the spacing between adjacent rhomboid recesses 32 is preferably 5-10mm, and the four inner corners of the rhomboid recess 32 are all rounded with a radius of 0.5-1mm. The above specific values ​​are preferred technical parameters that can achieve the best stirring effect in practical applications to ensure foaming quality.

[0022] In this embodiment, the raw material storage tank, metering pump, gas introduction device, and drive device all adopt common structures, and will not be described in detail here.

[0023] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A microporous foaming molding machine for thermal insulation and stone impact resistance coating, comprising a mixing agitator, a raw material storage tank connected to the inside of the mixing agitator via a pipeline, a plurality of metering pumps disposed on the pipeline and corresponding one-to-one with the raw material storage tank, and a gas introduction device connected to the inside of the mixing agitator, characterized in that: The mixing agitator has a rotating shaft inside via a drive device. Three layers of helical blades are arranged sequentially along the axial direction of the rotating shaft, and the front edge of each blade has serrations.

2. A microcellular foamed molding machine for thermal shock resistant coating according to claim 1, wherein: The apex angle of the saw teeth is 60°-90°.

3. A microcellular foamed molding machine for thermal shock resistant coating according to claim 1, wherein: The tooth height of the saw teeth is 2-4 mm, and the tooth pitch is 3-6 mm.

4. The machine for forming microcellular foamed articles of thermal and stone impact resistant coating material according to claim 1, characterized in that: The surface of the blade is uniformly distributed with diamond-shaped pits.

5. The microporous foaming molding machine for thermal insulation and stone impact resistant coating according to claim 4, characterized in that: The diamond-shaped pit has a side length of 3-6mm, a depth of 1-3mm, and a distance of 5-10mm between adjacent diamond-shaped pits.

6. A microcellular foamed molding machine for thermal shock resistant, temperature resistant, and electrically insulating foam formed articles according to claim 4, wherein: The four inner corners of the rhomboid recess are all rounded, with a radius of 0.5-1mm.

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