A raw material mixing device for autoclaved aerated concrete (AAC) brick production

Abstract

This utility model discloses a raw material mixing device for autoclaved aerated concrete (AAC) brick production, comprising: a mixing tank, a storage tank, and a mixing assembly; the top of the mixing tank is provided with a platform, and a square hole is opened near the center of the platform. The storage tank is installed on the platform, and the mixing assembly is installed on the side of the square hole. A drive motor drives the mixing rod to rotate circumferentially within a ring, thoroughly mixing the injected gas-generating agent with the slurry, thus completing the mixing of the AAC brick raw materials. The storage tank can store the gas-generating agent, which is slowly injected into the mixing tank through a drain pipe, eliminating the need for manual intervention and freeing up labor. Furthermore, bottom protrusions and side protrusions are provided on the bottom and side walls of the mixing tank, which can prevent the slurry from rotating in one direction during mixing, causing the slurry to collide with each other and move irregularly during mixing. This ensures thorough mixing of the slurry and the gas-generating agent, resulting in bricks that meet quality standards.

Description

Technical Field

[0001] This utility model belongs to the technical field of mixing devices, specifically relating to a raw material mixing device for the production of autoclaved aerated bricks. Background Technology

[0002] Autoclaved aerated concrete (AAC) bricks are a new type of wall material made from stone powder, cement, and lime as the main raw materials. They are prepared by casting, cutting, and curing under high pressure with steam. In the production of autoclaved aerated concrete (AAC) bricks, various raw materials are mixed with water to form a slurry, which is then poured into molds to solidify. During the mixing process, a suitable amount of a foaming agent needs to be added. This foaming agent is a chemical substance that transforms liquid into gas under pressure. Its addition to the slurry is primarily to create air bubbles in the subsequently produced bricks, reducing the density and weight of the AAC bricks. Currently, factories mainly add foaming agents manually. The foaming agent is stored in a plastic bucket and poured into the mixing tank during the raw material mixing process. This method requires workers to remain constantly beside the mixing tank, adding a bucket of foaming agent periodically, increasing the factory's workload. Furthermore, existing raw material mixing tanks rotate in one direction during mixing, causing the mixed slurry to rotate uniformly. The foaming agent added midway cannot mix with all the slurry and is thus rotated along with it, failing to fully mix with the slurry in the tank. This results in some AAC bricks being of substandard quality, others having small pores, and some exceeding weight limits. Utility Model Content

[0003] In order to overcome the problems in the background art, this utility model provides a raw material mixing device for the production of autoclaved aerated bricks.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A raw material mixing device for autoclaved aerated concrete (AAC) block production includes: a mixing tank, a storage tank, and a mixing assembly; the top of the mixing tank is provided with a platform, and a square hole is opened near the center of the platform. The storage tank is installed on the platform, and the mixing assembly is installed on the side of the square hole. The mixing assembly includes a mounting plate, a rotating shaft sleeve, a mixing rod, and a drive motor. The mounting plate is fixed to the platform by bolts, the rotating shaft sleeve is installed on the mounting plate, the mixing rod is installed on the rotating shaft sleeve and extends into the mixing tank from the square hole, and the drive motor is fixed to the mounting plate.

[0006] Furthermore, the mounting plate has an L-shaped structure, consisting of a base plate and a vertical plate. Reinforcing ribs are provided between the base plate and the vertical plate. Several bolts are provided on the base plate to fix the mounting plate to the platform. The vertical plate is set perpendicular to the base plate. A fixed arm and a rotating arm are provided at the front end of the vertical plate. The fixed arm is located at the upper left position of the vertical plate, and the rotating arm is located at the lower left position of the vertical plate.

[0007] Furthermore, the fixed arm is provided with a circular hole for installing the rotating shaft sleeve. The rotating shaft sleeve is composed of a circular rod, a driven pulley, and a cylinder, which are integrally formed. The circular rod is installed in the circular hole, the driven pulley is located at the lower end of the circular rod, the cylinder is set below the driven pulley and the cylinder is set at an angle to the circular rod, and the top of the stirring rod is fixedly installed inside the cylinder.

[0008] Furthermore, the length of the round rod is greater than the depth of the round hole. After the round rod is installed in the round hole, the remaining part of the round rod is threaded. A collar is provided on the top of the round rod, and the collar is threaded inside. The collar is installed onto the round rod through the threaded hole.

[0009] Furthermore, the rotating arm is provided with a ring, and the stirring rod is provided with a spherical assembly at the middle position, with the stirring rod passing through the ring and the spherical assembly located inside the ring.

[0010] Furthermore, the drive motor is mounted on the right side of the upright plate, and a drive pulley is mounted on the output shaft of the drive motor. The drive pulley and the driven pulley are connected by a belt.

[0011] Furthermore, a drain pipe is provided on the side of the storage tank, and a valve is installed on the drain pipe.

[0012] Furthermore, the mixing tank is provided with a ladder on its side, and a guardrail is installed on the side near the square hole of the ladder. The bottom and inner wall of the mixing tank are provided with a number of bottom protrusions and side protrusions respectively.

[0013] Furthermore, a water inlet pipe is provided at a lower position on the side wall of the mixing tank, and a slurry pump is installed on the water inlet pipe.

[0014] The beneficial effects of this utility model are:

[0015] The mixing assembly of this invention uses a drive motor to rotate the mixing rod in a circular ring, thoroughly mixing the injected gas-generating agent with the slurry to complete the mixing of the aerated brick raw materials. The storage tank can store the gas-generating agent, which is slowly injected into the mixing tank through a drain pipe, eliminating the need for manual intervention and freeing up labor. Furthermore, bottom protrusions and side protrusions are provided on the bottom and side walls of the mixing tank, which can prevent the slurry from rotating in one direction during mixing, causing the slurry to collide with each other and move irregularly during mixing. This ensures that the slurry and gas-generating agent are thoroughly mixed, resulting in bricks that meet the quality standards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a three-dimensional schematic diagram of the device of this utility model;

[0018] Figure 2 is a schematic diagram of the stirring assembly structure of this utility model;

[0019] Figure 3 is an exploded view of the stirring assembly of this utility model;

[0020] Figure 4 is a schematic diagram of the mounting plate structure of this utility model;

[0021] Figure 5 is a schematic diagram of the rotating sleeve structure of this utility model;

[0022] Figure 6 is a schematic diagram of the internal structure of the stirring tank of this utility model;

[0023] 1 - Mixing tank, 11 - Square hole, 12 - Ladder, 13 - Guardrail, 101 - Platform, 102 - Bottom protrusion, 103 - Side protrusion, 2 - Storage tank, 21 - Drain pipe, 22 - Pipe valve, 3 - Mixing assembly, 31 - Mounting plate, 311 - Vertical plate, 312 - Base plate, 313 - Reinforcing rib, 32 - Rotating shaft sleeve, 321 - Round rod, 322 - Driven pulley, 323 - Cylinder, 33 - Mixing rod, 331 - Spherical assembly, 34 - Drive motor, 341 - Drive pulley, 342 - Belt, 35 - Collar, 301 - Fixed arm, 302 - Rotating arm, 303 - Round hole, 304 - Circular ring, 4 - Water inlet pipe, 41 - Slurry pump. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Referring to Figures 1 to 6, this utility model discloses a raw material mixing device for autoclaved aerated concrete (AAC) block production, comprising: a mixing tank 1, a storage tank 2, and a mixing assembly 3; the mixing tank 1 has a platform 101 at the top, and a square hole 11 is opened near the center of the platform 101. The storage tank 2 is installed on the platform 101, and the mixing assembly 3 is installed on the side of the square hole 11. The mixing assembly 3 further includes a mounting plate 31, a rotating shaft sleeve 32, a mixing rod 33, and a drive motor 34. The mounting plate 31 is fixed to the platform 101 by bolts, the rotating shaft sleeve 32 is installed on the mounting plate 31, the mixing rod 33 is installed on the rotating shaft sleeve 32 and extends into the mixing tank 1 from the square hole 11, and the drive motor 34 is fixed to the mounting plate 31.

[0026] It should be noted that, referring to Figures 1, 2, and 3, this device is mainly used to mix the gas-generating agent with the slurry of autoclaved aerated bricks. The mixing tank 1 is a cylinder with an internal cavity. The gas-generating agent is stored in the storage tank 2. The gas-generating agent flows from the storage tank 2 into the mixing tank 1 in equal amounts. The mixing component 3 mixes the gas-generating agent into the slurry. The slurry is mainly a mixture of stone powder, cement, lime, and water. After being stirred to a viscous state, it can be poured into a mold to solidify into a blank. The mixing component 3 is the most important component, responsible for fully mixing the gas-generating agent into the slurry. The mixing component is mainly installed on the mounting plate 31. The drive motor 34 drives the rotating shaft sleeve 32 to rotate. The rotating shaft sleeve 32 drives the mixing rod 33 to make a circular motion, thereby stirring the slurry in the mixing tank 1.

[0027] In this embodiment, the mounting plate 31 has an L-shaped structure, consisting of a base plate 312 and a vertical plate 311. A reinforcing rib 313 is provided between the base plate 312 and the vertical plate 311. Several bolts are provided on the base plate 312 to fix the mounting plate 31 to the platform 101. The vertical plate 311 is set perpendicular to the base plate 312. The front end of the vertical plate 311 is provided with a fixed arm 301 and a rotating arm 302. The fixed arm 301 is located at the upper left position of the vertical plate 311, and the rotating arm 302 is located at the lower left position of the vertical plate 311.

[0028] It should be noted that, referring to Figure 4, the mounting plate 31 is used to mount the drive motor 34 and the fixed rotating sleeve 32. The fixed arm 301 and the rotating arm 302 set on the left side of the mounting plate 31 are used to limit the stirring rod 33. The fixed arm 301 is mainly used to mount the rotating sleeve 32. The rotating sleeve 32 rotates on the fixed arm 301, driving the stirring rod 33 to rotate. The rotating arm 302 provides a fulcrum for the rotation of the stirring rod 33. Since the stirring rod 33 is inclined, the rotating sleeve 32 only drives the stirring rod 33 to rotate. The position of the rotating arm 302 is the fulcrum for the rotation of the stirring rod 33.

[0029] In this embodiment, the fixed arm 301 is provided with a circular hole 303 for mounting the rotating shaft sleeve 32. The rotating shaft sleeve 32 is composed of a circular rod 321, a driven pulley 322, and a cylinder 323, which are integrally formed. The circular rod 321 is installed in the circular hole 303, the driven pulley 322 is located at the lower end of the circular rod 321, and the cylinder 323 is arranged below the driven pulley 322 and at an angle to the circular rod 321. The top of the stirring rod 33 is fixedly installed inside the cylinder 323.

[0030] In this embodiment, the drive motor 34 is mounted on the right side of the upright plate 311, and a drive pulley 341 is mounted on the output shaft of the drive motor 34. The drive pulley 341 and the driven pulley 322 are connected by a belt 342.

[0031] It should be noted that, as shown in Figures 2 and 5, the rotating sleeve 32 is composed of a round rod 321, a driven pulley 322, and a cylinder 323, which are integrally formed. The round rod 321 is used to install the entire component onto the fixed arm 301. The driven pulley 322 is used to connect the belt 342 to transmit the power of the driving pulley 341. The driving pulley 341 drives the entire rotating sleeve 32 to rotate at the round hole 303 of the fixed arm 301. The cylinder 323 is set on the lower side of the driven pulley 322 and is set at an angle to the round rod 321. In this way, after the top of the stirring rod 33 is fixedly installed in the cylinder 323, the stirring rod 33 is inclined. When rotating, it will perform a circular motion with the rotating arm 302 as the fulcrum, thereby agitating the slurry in the mixing tank 1.

[0032] In this embodiment, the length of the round rod 321 is greater than the depth of the round hole 303. After the round rod 321 is installed in the round hole 303, the remaining part of the round rod 321 is provided with threads. A collar 35 is provided above the round rod 321. The collar 35 is provided with a threaded hole inside. The collar 35 is installed on the round rod 321 through the threaded hole.

[0033] It should be noted that, as shown in Figures 2 and 3, when installing the rotating sleeve 32, the round rod 321 is fitted upwards from the lower end of the round hole 303. After installation, a collar 35 needs to be installed to fix it and prevent the rotating sleeve 32 from sliding down from the round hole 303. The collar 35 is installed on the round rod 321 through a threaded hole, so that the rotating sleeve 32 can only rotate on the fixed arm 301 and cannot move up and down.

[0034] In this embodiment, the rotating arm 302 is provided with a ring 304, and the stirring rod 33 is provided with a spherical kit 331 at the middle position. The stirring rod 33 passes through the ring 304 and the spherical kit 331 is located inside the ring 304.

[0035] It should be noted that, as shown in Figures 2 and 3, the rotating arm 302 is positioned as the fulcrum for the rotation of the stirring rod 33. The stirring rod 33 rotates around this fulcrum. The spherical assembly 331, located in the middle of the stirring rod 33, is precisely within the ring 304 of the rotating arm 302. This allows the spherical assembly 331 to smoothly contact the ring 304 during the rotation of the stirring rod 33, and also enables the stirring rod 33 to rotate more effectively within the ring 304.

[0036] In this embodiment, a drain pipe 21 is provided on the side of the storage tank 2, and a pipe valve 22 is installed on the drain pipe 21.

[0037] It should be noted that, as shown in Figures 1 and 6, the drain pipe 21 is used to discharge the gas-generating agent in the storage tank 2 into the mixing tank 1. This cannot be done manually. The flow rate of the gas-generating agent is controlled by the set valve 22, which can better control the mixing of the gas-generating agent and the slurry. This eliminates the need for workers to stand by and operate the addition of the gas-generating agent, thus freeing up productivity.

[0038] In this embodiment, a ladder 12 is provided on the side of the mixing tank 1, and a guardrail 13 is installed on the side near the square hole 11 of the ladder 12. Several bottom protrusions 102 and side protrusions 103 are respectively provided on the bottom and inner side wall of the mixing tank 1.

[0039] It should be noted that, as shown in Figures 1 and 6, the square hole 11 is used for the installation of the drain pipe 21, and also facilitates workers to observe the situation inside the mixing tank 1. The guardrail 13 installed on one side of the square hole 11 can prevent workers from falling into the mixing tank 1 while working on the platform 101 and causing danger.

[0040] Because existing raw material mixing tanks rotate in one direction during the mixing process, the mixed slurry rotates uniformly in one direction. The gas-generating agent added midway cannot mix with all the slurry and is also rotated along with it, failing to fully mix with the slurry in the tank. This results in some aerated bricks being of substandard quality, others having small pores, and bricks exceeding the weight limit. Therefore, bottom protrusions 102 and side protrusions 103 are set on the bottom and inner wall of the mixing tank 1. The bottom protrusions 102 and side protrusions 103 can prevent the slurry from rotating in one direction, causing the slurry to collide with each other and move irregularly during mixing. This can fully mix the slurry with the gas-generating agent, so that the quality of the produced bricks meets the standards.

[0041] In this embodiment, a water inlet pipe 4 is provided at a lower position on the side wall of the mixing tank 1, and a slurry pump 41 is installed on the water inlet pipe 4.

[0042] It should be noted that, as shown in Figures 1 and 6, after the slurry and the gas-generating agent are fully mixed, the slurry needs to be pumped into a storage tank and finally injected into a mold to solidify into a blank. The water pipe 4 connects the mixing tank 1 to the storage tank. The slurry pump 41 set in the middle is used to pump the slurry in the mixing tank 1. The main function of the slurry pump 41 is to transport the slurry containing solid particles. By using the centrifugal force (the rotation of the pump impeller), the energy of the solid-liquid mixture is increased, thereby quickly pumping the mixed slurry of stone powder, cement, lime and water into the storage tank, reducing transportation costs.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A raw material stirring device for steam pressure aerated brick production, characterized by, include: A mixing tank (1), a storage tank (2), and a mixing assembly (3) are provided. The mixing tank (1) is provided with a platform (101) at the top. A square hole (11) is provided on the platform (101) near the middle. The storage tank (2) is installed on the platform (101). The mixing assembly (3) is installed on the side of the square hole (11). The mixing assembly (3) includes a mounting plate (31), a rotating shaft sleeve (32), a stirring rod (33), and a drive motor (34). The mounting plate (31) is fixed to the platform (101) by bolts. The rotating shaft sleeve (32) is installed on the mounting plate (31). The stirring rod (33) is installed on the rotating shaft sleeve (32) and extends into the mixing tank (1) from the square hole (11). The drive motor (34) is fixed on the mounting plate.

2. The raw material stirring device for producing a steam pressure autoclaved aerated brick according to claim 1, characterized in that, The mounting plate (31) has an L-shaped structure and is divided into a base plate (312) and a vertical plate (311). A reinforcing rib (313) is provided between the base plate (312) and the vertical plate (311). Several bolts are provided on the base plate (312) to fix the mounting plate (31) to the platform (101). The vertical plate (311) is set perpendicular to the base plate (312). The front end of the vertical plate (311) is provided with a fixed arm (301) and a rotating arm (302). The fixed arm (301) is set at the upper left position of the vertical plate (311), and the rotating arm (302) is set at the lower left position of the vertical plate.

3. The raw material stirring device for producing steam-bonded autoclaved aerated concrete according to claim 2, characterized in that, The fixed arm (301) is provided with a circular hole (303) for installing the rotating shaft sleeve (32). The rotating shaft sleeve (32) is composed of a round rod (321), a driven pulley (322), and a cylinder (323), which are integrally formed. The round rod (321) is installed in the circular hole (303), the driven pulley (322) is located at the lower end of the round rod (321), and the cylinder (323) is set on the lower side of the driven pulley (322) and the cylinder (323) is set at an angle with the round rod (321). The top of the stirring rod (33) is fixedly installed in the cylinder (323).

4. The raw material stirring device for producing a steam-bonded autoclaved aerated concrete block according to claim 3, characterized in that, The length of the round rod (321) is greater than the depth of the round hole (303). After the round rod (321) is installed in the round hole (303), the remaining part of the round rod (321) is threaded. A collar (35) is provided above the round rod (321). The collar (35) is provided with a threaded hole inside. The collar (35) is installed on the round rod (321) through the threaded hole.

5. The raw material stirring device for producing a steam-bonded autoclaved aerated concrete block according to claim 3, characterized in that, The rotating arm (302) is provided with a ring (304), and the stirring rod (33) is provided with a spherical kit (331) at the middle position. The stirring rod (33) passes through the ring (304) and the spherical kit (331) is located inside the ring (304).

6. The raw material stirring device for producing a steam-bonded aerated brick according to claim 3, characterized in that, The drive motor (34) is mounted on the right side of the upright plate (311), and a drive pulley (341) is mounted on the output shaft of the drive motor (34). The drive pulley (341) and the driven pulley (322) are connected by a belt (342).

7. The raw material mixing device for autoclaved aerated concrete (AAC) brick production according to claim 1, characterized in that, The storage tank (2) is provided with a drain pipe (21) on its side, and a pipe valve (22) is installed on the drain pipe (21).

8. The raw material stirring device for producing a steam-bonded autoclaved aerated concrete block according to claim 1, characterized in that, The mixing tank (1) is provided with a ladder (12) on its side, and a guardrail (13) is installed on the side of the square hole (11) near the ladder (12). The bottom and inner wall of the mixing tank (1) are provided with a number of bottom protrusions (102) and side protrusions (103).

9. The raw material stirring device for producing a steam-bonded autoclaved aerated concrete block according to claim 1, characterized in that, A water inlet pipe (4) is provided on the lower side wall of the mixing tank (1), and a slurry pump (41) is installed on the water inlet pipe (4).

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