Screening mechanism for autoclaved fly ash-lime brick production

Abstract

The utility model provides a screening mechanism for autoclaved flyash-lime brick production, which relates to the technical field of screening and comprises a screening box, and a first rotating shaft and a second rotating shaft are rotatably connected in the screening box. According to the utility model, on one hand, the vibrating mechanism is arranged in the screening box to accelerate screening of materials, and on the other hand, the meshing device of the chain and the gear is arranged on one side of the screening box to drive the feeding box to move, so that the materials which are not completely screened can be screened for the second time, and the accelerated screening structure improves the screening efficiency by increasing the vibration frequency and amplitude. And the speed of materials passing through the screen is increased, so that the yield is improved. The materials can be further subdivided through secondary screening, it is ensured that the particle size is more uniform, too large or too small particles are removed, and the quality of the raw materials is optimized. The two structures are combined, so that the screening precision is improved, the mixing of large particles and fine powder is reduced, the strength and compactness of the autoclaved fly ash-lime bricks are guaranteed, and the production efficiency and the quality of finished products are improved.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, and in particular to a screening mechanism for the production of autoclaved fly ash bricks. Background Technology

[0002] In the production of autoclaved fly ash bricks, screening mechanisms typically employ vibrating screens or drum screens. The main function of these mechanisms is to screen raw materials (such as fly ash, lime, and gypsum) to ensure uniform particle size and prevent unqualified coarse particles from affecting the quality of the finished bricks. Vibrating screens use an electric motor to drive the screen mesh to vibrate up and down, causing material particles to pass through the screen's openings and separate, achieving the screening purpose. Drum screens utilize the rotation of the drum to force material through the screen openings. Screening mechanisms can be customized according to production scale and requirements to optimize raw material ratios, improve production efficiency, and ensure the strength and durability of the autoclaved bricks.

[0003] While existing screening mechanisms offer high screening efficiency, a small footprint, and suitability for large-scale production, and are highly adaptable to handle various materials, they lack secondary screening capabilities. This results in uneven raw material particle size, affecting the quality and strength of autoclaved fly ash bricks. Furthermore, the presence of excessively large or fine particles can lead to poor density in the finished bricks, and even impact the stability and efficiency of the production process.

[0004] Therefore, we propose a screening mechanism for the production of autoclaved fly ash bricks. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies. While existing screening mechanisms offer high screening efficiency, small footprint, suitability for large-scale production, and strong adaptability, capable of handling various materials, they lack secondary screening capabilities. This results in uneven raw material particle size, affecting the quality and strength of autoclaved fly ash bricks. Furthermore, the presence of excessive large particles or fine powder can lead to poor density in the finished bricks, and even impact the stability and efficiency of the production process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A screening mechanism for autoclaved fly ash brick production includes a screening box. A first rotating shaft and a second rotating shaft are rotatably connected inside the screening box. Crankshafts are provided at both ends of the first rotating shaft. A first connecting rod is rotatably connected to the end of the crankshaft away from the first rotating shaft. A second connecting rod is rotatably connected to the end of the first connecting rod away from the crankshaft. A vibrating plate is fixedly installed at the end of the second connecting rod away from the first connecting rod. A protective cover is fitted around the outer periphery of the crankshaft and is rotatably connected to the first rotating shaft through a bearing.

[0008] The second rotating shaft is coaxially fixedly connected to a gear at one end near the screen box, and the first and second rotating shafts are coaxially fixedly connected to pulleys at the ends away from the screen box. Belts are fitted around the outer circumferences of the two pulleys, and chains mesh around the outer circumferences of the two gears.

[0009] Preferably, a feeding box is fixedly installed on one side of the chain, and a box door is rotatably connected to the side of the feeding box near the screening box. A hole is opened on one side of the screening box to allow large particles that have not been screened to fall into the feeding box. An inclined block is fixedly installed on the top of the screening box to allow materials that have been screened for a second time to fall into the box.

[0010] Preferably, the inside of the feeding box is provided with an inclined block structure, and the side of the box door away from the feeding box is closely attached to the corresponding side of the screening box.

[0011] Preferably, a second screen is fixedly installed on the top of the vibrating plate.

[0012] Preferably, a first screen is disposed above the second screen and is fixedly connected to the screening box.

[0013] Preferably, the internal rotating part of the screening box is equipped with a crushing blade, and an external power source is added to provide power for the crushing blade to rotate.

[0014] Preferably, a motor is fixedly installed on one side of the screening box, and the output end of the motor is coaxially fixedly connected to a first rotating shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, a vibration mechanism is installed inside the screening box to accelerate material screening. Simultaneously, a chain and gear meshing device is installed on one side of the screening box to drive the movement of the feeding box, allowing for secondary screening of materials that are not fully screened. The accelerated screening structure increases the vibration frequency and amplitude, increasing the speed at which materials pass through the screen, thereby increasing output. Secondary screening further refines the material, ensuring more uniform particle size, removing excessively large or small particles, and optimizing raw material quality. The combination of these two structures not only improves screening accuracy but also reduces the mixing of large particles and fine powder, ensuring the strength and density of autoclaved fly ash bricks, and improving production efficiency and finished product quality. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a screening mechanism for autoclaved fly ash brick production provided by this utility model;

[0018] Figure 2 A cross-sectional view of the overall structure of a screening mechanism for autoclaved fly ash brick production provided by this utility model;

[0019] Figure 3 A schematic diagram of the feeding box of a screening mechanism for autoclaved fly ash brick production provided by this utility model;

[0020] Figure 4 A disassembled diagram of the vibration mechanism of a screening mechanism for autoclaved fly ash brick production provided by this utility model;

[0021] Figure 5 A schematic diagram of the overall vibration mechanism of a screening mechanism for autoclaved fly ash brick production provided by this utility model;

[0022] Figure 6 This utility model provides a disassembled diagram of the feeding mechanism of a screening mechanism for autoclaved fly ash brick production.

[0023] Legend: 1. Screening box; 2. First screen; 3. Second screen; 4. First rotating shaft; 5. Crankshaft; 6. First connecting rod; 7. Second connecting rod; 8. Vibrating plate; 9. Protective cover; 10. Second rotating shaft; 11. Gear; 12. Chain; 13. Feeding box; 14. Box door; 15. Pulley; 16. Belt; 17. Crusher blade. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example 1

[0029] like Figure 1-6 As shown, this utility model provides a technical solution: a screening mechanism for autoclaved fly ash brick production, including a screening box 1. A first rotating shaft 4 and a second rotating shaft 10 are rotatably connected inside the screening box 1. Crankshafts 5 are provided at both ends of the first rotating shaft 4. A first connecting rod 6 is rotatably connected to the end of the crankshaft 5 away from the first rotating shaft 4. A second connecting rod 7 is rotatably connected to the end of the first connecting rod 6 away from the crankshaft 5. A vibrating plate 8 is fixedly installed at the end of the second connecting rod 7 away from the first connecting rod 6. A protective cover 9 is sleeved on the outer periphery of the crankshaft 5 and rotatably connected to the first rotating shaft 4 through a bearing. By setting the crankshaft 5 as the core of the vibration mechanism, the screening efficiency of the device is accelerated, thereby increasing the output.

[0030] The second rotating shaft 10 is coaxially fixedly connected to a gear 11 at one end near the screening box 1. The first rotating shaft 4 and the second rotating shaft 10 are coaxially fixedly connected to a pulley 15 at the other end away from the screening box 1. A belt 16 is sleeved on the outer circumference of the two pulleys 15. A chain 12 meshes with the outer circumference of the two gears 11. Through the meshing structure of the gear 11 and the chain 12, the device can achieve the purpose of secondary repeated feeding, so that the material that is not completely screened can be screened a second time, thereby optimizing the quality of the raw materials.

[0031] Example 2

[0032] A feeding box 13 is fixedly installed on one side of the chain 12. A box door 14 is rotatably connected to the side of the feeding box 13 near the screen box 1. An inclined block structure is set inside the feeding box 13. The side of the box door 14 away from the feeding box 13 is close to the corresponding side of the screen box 1. By setting the structure of the box door 14 close to the side of the screen box 1, the material naturally moves towards the box door 14 due to the inclined structure inside the feeding box 13 during transportation. When it leaves the box body, the box door 14 opens, and large particles continue to fall into the box body through the inclined block fixed to the top of the box body.

[0033] Example 3

[0034] A second screen 3 is fixedly installed on the top of the vibrating plate 8. A first screen 2 is set above the second screen 3 and fixedly connected to the screening box 1. A crushing blade 17 is rotatably connected inside the screening box 1. A motor is fixedly installed on one side of the screening box 1. The output end of the motor is coaxially fixedly connected to the first rotating shaft 4. Through the cooperation of the belt 16 and the pulley 15, the purpose of one motor driving multiple structures is achieved, saving energy.

[0035] The working process of this utility model:

[0036] Step 1: Put the material to be screened into the screen box 1. Power the crusher 17 with external energy. The crushed material falls through the first screen 2, and the fine particles fall out through the second screen 3.

[0037] Step 2: The output end of the motor is coaxially and fixedly connected to the first rotating shaft 4. When the first rotating shaft 4 rotates, it drives the crankshaft 5, which is coaxially and fixedly connected to both ends of it, to rotate. The first connecting rod 6 and the second connecting rod 7 are rotatably connected to the vibrating plate 8. The top end of the vibrating plate 8 is fixedly connected to the bottom end of the second screen 3, thereby accelerating the screening of the second screen 3.

[0038] Step 3: Large particles that do not pass through the first screen 2 will fall into the feeding box 13 through the hole on one side of the screen box 1. Since the gear 11 that drives the chain 12 is connected to the first rotating shaft 4 by the structure of the belt 16 and the pulley 15, the motor will rotate and drive the gear 11 to rotate. As a result, the feeding box 13 will feed the material up and down as the chain 12 rotates.

[0039] Step four: The inside of the feeding box 13 is set with an inclined structure. The side of the feeding box 13 near the box body is rotatably connected to the box door 14. When the feeding box 13 rises to a certain height, the material will naturally move towards the box door 14 due to the slope. When it leaves the box body, the box door 14 opens, and large particles of material continue to fall into the box body through the inclined block fixed at the top of the box body for screening again.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening mechanism for autoclaved fly ash brick production, comprising a screening box (1), characterized in that: The screen box (1) is rotatably connected to a first rotating shaft (4) and a second rotating shaft (10). The first rotating shaft (4) is provided with crankshafts (5) at both ends. The end of the crankshaft (5) away from the first rotating shaft (4) is rotatably connected to a first connecting rod (6). The end of the first connecting rod (6) away from the crankshaft (5) is rotatably connected to a second connecting rod (7). The end of the second connecting rod (7) away from the first connecting rod (6) is fixedly installed with a vibrating plate (8). The outer circumference of the crankshaft (5) is fitted with a protective cover (9) and is rotatably connected to the first rotating shaft (4) through a bearing. The second rotating shaft (10) is coaxially fixedly connected to a gear (11) at one end near the screen box (1). The first rotating shaft (4) and the second rotating shaft (10) are coaxially fixedly connected to pulleys (15) at the ends away from the screen box (1). The outer circumference of the two pulleys (15) is fitted with belts (16), and the outer circumference of the two gears (11) is meshed with chains (12).

2. The screening mechanism for autoclaved fly ash brick production according to claim 1, characterized in that: A feeding box (13) is fixedly installed on one side of the chain (12), and a box door (14) is rotatably connected to the side of the feeding box (1) near the screen box (1).

3. The screening mechanism for autoclaved fly ash brick production according to claim 2, characterized in that: The feeding box (13) has an inclined block structure inside, and the side of the box door (14) away from the feeding box (13) is close to the corresponding side of the screen box (1).

4. The screening mechanism for autoclaved fly ash brick production according to claim 1, characterized in that: A second screen (3) is fixedly installed on the top of the vibrating plate (8).

5. The screening mechanism for autoclaved fly ash brick production according to claim 4, characterized in that: The first screen (2) is provided above the second screen (3) and is fixedly connected to the screening box (1).

6. The screening mechanism for autoclaved fly ash brick production according to claim 1, characterized in that: The screen box (1) is internally connected to a crushing blade (17).

7. The screening mechanism for autoclaved fly ash brick production according to claim 6, characterized in that: A motor is fixedly installed on one side of the screening box (1), and the output end of the motor is coaxially fixedly connected to the first rotating shaft (4).

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