Foam concrete mixing device and mixing method

Abstract

The application discloses a foamed concrete stirring device and stirring method, and relates to the technical field of stirring equipment, wherein the foamed concrete stirring device comprises a stirring tank and a stirrer; the stirring tank is provided with a stirring space in a V-shaped structure, and a stirrer is arranged on each side of the stirring space; the stirrer is provided with a stirring shaft with stirring blades, which is used for pressing the slurry downwards while stirring the slurry, so that the slurry rolls upwards along the side wall of the stirring tank. The internal structure of the stirring tank is optimized and designed, and the single horizontal stirring mode of the existing stirring shaft is changed, so that the slurry rolls upwards along the side wall of the stirring tank while rotating horizontally, thereby realizing three-dimensional stirring, effectively improving the stirring efficiency, ensuring that the slurry is stirred uniformly and mixed sufficiently, and further ensuring that the slurry specific gravity is uniform, the rupture or perforation of bubbles in the foaming process is avoided, and the quality of the foamed concrete is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stirring equipment, in particular to a foamed concrete stirring device and stirring method. BACKGROUND

[0002] Foamed concrete, also known as expanded concrete, is a new type of lightweight thermal insulation material containing a large number of closed pores, which is formed by mixing and stirring a slurry made of cementing materials, admixtures, modifiers, brine, etc., and then pouring and curing. It has the advantages of low bulk density, good waterproofness, significant moisture retention and thermal insulation performance, excellent sound absorption and sound insulation performance, and high strength, making it an ideal choice for external wall insulation materials.

[0003] The existing foamed concrete mostly uses ordinary concrete stirring equipment to realize the mixing and stirring process during production, which easily causes uneven stirring, poor mixing effect, bubble rupture, and serious perforation, etc., and thus the product quality cannot be guaranteed. SUMMARY

[0004] The present application provides a foamed concrete stirring device and stirring method, which mainly aims to solve the problem of uneven stirring, poor mixing effect, bubble rupture, and serious perforation, etc. during the stirring process of the existing foamed concrete.

[0005] The present application adopts the following technical solutions:

[0006] A foamed concrete stirring device, comprising a stirring tank and a stirrer; the stirring tank has a V-shaped stirring space, and a stirrer is arranged on each side of the stirring space; the stirrer is provided with a stirring shaft with stirring blades, which is used to press down the slurry while stirring the slurry, so that the slurry rolls upward along the side wall of the stirring tank.

[0007] Further, the stirring tank comprises two tank bodies arranged symmetrically and in the shape of inclined columns, the bottoms of the two tank bodies are connected to each other, thereby forming a V-shaped stirring space; each of the two tank bodies is provided with a stirrer.

[0008] Further, the included angle between the two tank bodies is 30-70°.

[0009] Further, the stirring tank further comprises a cover body detachably arranged above the tank body, the cover body is provided with a feeding port and an observation window.

[0010] Further, the bottoms of the two tank bodies are each provided with a discharge port, and a gate valve for opening and closing the discharge port is arranged.

[0011] Further, the stirring blades are helical blades, and the outer diameter of the helical blades gradually increases from top to bottom.

[0012] Further, the stirrer further comprises a scraper detachably arranged at the bottom of the stirring shaft for scraping the slurry deposited at the bottom of the stirring tank.

[0013] Further, the stirrer further comprises two driving motors fixedly arranged at the two sides of the top of the stirring tank, and the output shafts of the driving motors extend into the stirring tank and are connected with the stirring shaft.

[0014] The method for stirring the foam concrete comprises the following steps: pressing the slurry while stirring the slurry, so that the slurry in the stirring tank rotates horizontally and rolls back and forth from bottom to top.

[0015] Further, the stirring method further comprises the following step: scraping the slurry deposited at the bottom of the stirring tank while stirring the slurry, so as to ensure uniform mixing of the slurry.

[0016] Compared with the prior art, the method has the following beneficial effects:

[0017] 1. The internal structure of the stirring tank is optimized and designed, and the single horizontal stirring mode of the stirring shaft is changed, so that the slurry rolls upward along the side wall of the stirring tank while rotating horizontally, thereby realizing three-dimensional stirring, effectively improving the stirring efficiency, ensuring uniform stirring and sufficient mixing of the slurry, and further ensuring uniform specific gravity of the slurry, avoiding rupture or perforation of the bubbles during foaming, and effectively improving the quality of the foam concrete.

[0018] 2. The stirring tank in the method is composed of two tank bodies in the shape of inclined columns and connected at the bottom, and a stirrer is arranged in each tank body. When working, the stirring shafts of the two stirrers drive the stirring blades to rotate in the same direction, so that the slurry in the two tank bodies circulates and rolls up and down, thereby effectively improving the stirring efficiency and mixing effect and the yield of the stirring tank.

[0019] 3. The included angle α between the two tank bodies is 30-70°, which can ensure sufficient and uniform stirring of the slurry in the shortest time, thereby ensuring the stirring effect and effectively improving the stirring efficiency.

[0020] 4. The stirring blade is a spiral blade, and the outer diameter of the spiral blade gradually increases from top to bottom, so that the force generated by the stirring shaft gradually increases from top to bottom, thereby forming a tendency to press the slurry, so that the slurry rolls back and forth from bottom to top while rotating horizontally, thereby effectively improving the stirring effect and ensuring uniform mixing of the slurry.

[0021] 5. The design of the scraper in the present invention can not only scrape off the slurry to ensure that there is no residue of the slurry, but also stir the slurry horizontally. A gap of 0.5 cm is reserved between the scraper and the bottom and side walls of the tank body, thereby ensuring that the slurry is scraped off without dead angles while avoiding wear and tear, effectively extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of Example 1 of the present invention.

[0023] Figure 2 It is a side view of embodiment 1 of the present invention.

[0024] Figure 3 It is a top view of Example 1 of the present invention.

[0025] Figure 4 Schematic diagram of the structure of the stirrer in the second embodiment of the present invention (the driving motor is not shown).

[0026] In the figure: 1. mixing tank; 10. mixing space; 11. tank body; 111. reinforcement plate; 12. cover; 121. feeding port; 122. observation window; 13. gate valve; 2. agitator; 21. stirring shaft; 22. stirring blade; 23. scraper; 24. drive motor. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0028] Example 1:

[0029] Reference Figures 1 to 3 A foam concrete mixing device comprises a mixing tank 1 and an agitator 2; the mixing tank 1 has a V-shaped mixing space 10, and an agitator 2 is provided on each side of the mixing space 10; the agitator 2 is provided with a mixing shaft 21 with a mixing blade 22, which is used to press down the slurry while stirring the slurry, causing the slurry to roll upward along the side wall of the mixing tank 1. The present invention optimizes the internal structure of the mixing tank 1 and changes the existing single horizontal stirring mode of the mixing shaft 21, so that the slurry rolls upward along the side wall of the mixing tank 1 while rotating horizontally, thereby achieving three-dimensional stirring, effectively improving the stirring efficiency, ensuring that the slurry is stirred evenly and fully mixed, and further ensuring that the slurry has a uniform specific gravity, avoiding the rupture or perforation of bubbles during the foaming process, and effectively improving the quality of the foamed concrete.

[0030] The following is a detailed introduction to the structure and characteristics of the mixing tank 1:

[0031] Reference Figures 1 to 3The mixing tank 1 comprises two symmetrically arranged, obliquely columnar tank bodies 11. The two tank bodies 11 are interconnected at their bottoms, forming a V-shaped mixing chamber 10. An agitator 2 is housed within each tank body 11. During operation, two stirring shafts 21 drive stirring blades 22 to rotate in the same direction, causing the slurry within the two tank bodies 11 to circulate and tumble upward and downward, significantly enhancing stirring efficiency and mixing effects, and effectively increasing the output of the mixing tank 1. To improve structural strength and stability, a reinforcement plate 111 may be installed between the two tank bodies 11.

[0032] Reference Figures 1 to 3 , the angle α between the two tank bodies 11 is 30-70°, that is, the inclination angle β of the side wall of the tank body 11 is 15-35°. During stirring, the slurry at the bottom of the mixing tank 1 rolls upward under the action of the agitator 2. This action can be approximately equivalent to a parabolic motion. Therefore, the present invention strictly designs the inclination angle β of the side wall of the tank body 11 so that the slurry just falls on the outer wall of the mixing tank 1 when it moves to the apex of the parabola, thereby ensuring that the slurry is fully and evenly stirred in the shortest time, thereby ensuring the stirring effect and fully improving the stirring efficiency. It should be noted that the value range of the inclination angle β in the present invention is a suitable range obtained based on multiple tests. During actual design and production, those skilled in the art can refer to the above description and combine the specific specifications of the mixing tank 1 and the stirring rate of the agitator 2 to make calculations to obtain an optimized value.

[0033] Reference Figures 1 to 3 The two tank bodies 11 are detachably provided with a cover 12 on top. The cover 12 is provided with a feeding port 121 and an observation window 122, so that the operator can feed the material and observe the stirring status of the slurry at any time. In order to facilitate the discharge of the material, the bottom of the two tank bodies 11 is provided with a discharge port and a gate valve 13 for opening and closing the discharge port.

[0034] The following is a detailed introduction to the structure and characteristics of the agitator:

[0035] Reference Figures 1 to 3 The agitator 2 includes a stirring shaft 21, stirring blades 22, a scraper 23, and a drive motor 24. The two drive motors 24 are respectively fixed to the lids 12 of the two tanks 11, and their output shafts extend into the interior of the tanks 11 and are connected to the stirring shaft 21. The outer wall of the stirring shaft 21 is provided with stirring blades 22, and the bottom of the stirring shaft 21 is detachably provided with a scraper 23 for scraping off slurry deposited on the bottom of the stirring tank 1.

[0036] Reference Figures 1 to 3Specifically, the stirring blade 22 is a spiral blade, and the outer diameter of the spiral blade gradually increases from top to bottom. This design allows the force generated by the stirring shaft 21 to gradually increase from top to bottom, thereby forming a downward pressure on the slurry, causing the slurry to roll back and forth from bottom to top while rotating horizontally, thereby fully improving the stirring effect and ensuring uniform mixing of the slurry.

[0037] Reference Figures 1 to 3 Specifically, the scraper 23 is a flat scraper. The design of the scraper 23 can not only scrape off the slurry to ensure that there is no residue of the slurry, but also stir the slurry horizontally. More specifically, the scraper 23 includes a connecting rod and a rubber plate. The connecting rod is vertically fixed to the bottom of the stirring shaft, and the connecting rod is detachably provided with a rubber plate. In actual production, the rubber plate can be fixed to the bottom of the connecting rod by bolts, thereby ensuring a reliable connection between the two while facilitating the removal and replacement of the rubber plate. A gap of 0.5 cm is reserved between the rubber plate and the bottom and side walls of the tank body 11, thereby ensuring that the slurry is scraped off without dead angles while avoiding wear and tear, effectively extending its service life.

[0038] The following introduces a mixing method based on the above-mentioned foam concrete mixing device:

[0039] A method for mixing foam concrete comprises the following steps: (1) pressing down the slurry while stirring the slurry so that the slurry in the mixing tank rotates horizontally and rolls back and forth from bottom to top; (2) scraping off the slurry deposited on the bottom of the mixing tank while stirring the slurry to ensure that the slurry is mixed evenly.

[0040] Example 2:

[0041] Reference Figures 1 to 4 Different from the first embodiment, the scrapers 23 in this embodiment are preferably two arc-shaped scrapers arranged in a centrally symmetrical manner, thereby improving the scraping effect and horizontal stirring effect of the scrapers 23.

[0042] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A foam concrete mixing device, comprising a mixing tank and a stirrer; characterized in that: The mixing tank has a V-shaped mixing space, and an agitator is provided on each side of the mixing space; the agitator is provided with a mixing shaft with a mixing blade, which is used to press down the slurry while stirring the slurry, so that the slurry rolls upward along the side wall of the mixing tank; The mixing tank comprises two symmetrically arranged oblique columnar tank bodies, the bottoms of the two tank bodies being interconnected to form a V-shaped mixing space, and an agitator is installed in each of the two tank bodies; the angle between the two tank bodies is 30-70 degrees, so that the slurry just falls on the outer wall of the mixing tank when it moves to the vertex of the parabola; when working, the two stirring shafts drive the stirring blades to rotate in the same direction, so that the slurry in the two tank bodies circulates and rolls up and down, fully improving the stirring efficiency and mixing effect; The stirring blade is a spiral blade, and the outer diameter of the spiral blade gradually increases from top to bottom, so that the force generated by the stirring shaft gradually increases from top to bottom, thereby forming a tendency to press the slurry downward, causing the slurry to roll back and forth from bottom to top while rotating horizontally, thereby fully improving the stirring effect and ensuring that the slurry is evenly mixed.

2. A foam concrete mixing device according to claim 1, characterized in that: The invention also comprises a cover body which is detachably arranged on the top of the tank body, and the cover body is provided with a feeding port and an observation window.

3. A foam concrete mixing device according to claim 1, characterized in that: The bottoms of the two tanks are both provided with discharge ports and are equipped with gate valves for opening and closing the discharge ports.

4. A foam concrete mixing device according to claim 1, characterized in that: The agitator further comprises a scraper detachably arranged at the bottom of the agitator shaft for scraping off the slurry deposited at the bottom of the agitator tank.

5. A foam concrete mixing device according to claim 1, characterized in that: The stirrer also includes a driving motor. Two driving motors are fixed on both sides of the top of the stirring tank, and the output shafts of the driving motors extend into the interior of the stirring tank and are connected to the stirring shaft.

6. A method for mixing foamed concrete, using the foamed concrete mixing device according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: while stirring the slurry, pressing the slurry downward so that the slurry in the stirring tank rotates horizontally and rolls back and forth from bottom to top.

7. A foam concrete mixing method according to claim 6, characterized in that: The method further includes the following steps: scraping off the slurry deposited on the bottom of the stirring tank while stirring the slurry to ensure that the slurry is evenly mixed.

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