An aggregate crusher for producing concrete
By introducing an automatic conveying system and dust removal device into the aggregate crusher, the problems of equipment failure and dust pollution in traditional aggregate crushers have been solved, and stable operation and healthy production of the equipment have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHENGDA PIPE PILE CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional aggregate crushers suffer from problems such as high-altitude material falling and hitting the crushing rollers, causing equipment failure and serious dust pollution, which affect the lifespan of the equipment and the health of the operators.
An aggregate crusher with side supports and conveying rollers was designed to achieve automatic aggregate conveying. A dust exhaust fan and buffer guide plate were installed on the top to reduce dust and impact. Wear-resistant materials and a corrugated surface design were used to improve crushing efficiency.
It effectively protects the concentric shaft of the crushing roller, reduces equipment failure, lowers maintenance costs, creates a healthy and environmentally friendly working environment, extends equipment life, and improves crushing efficiency and equipment performance.
Smart Images
Figure CN224321489U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of concrete aggregate crushing technology, and in particular relates to an aggregate crusher for concrete production. Background Technology
[0002] Concrete aggregates, as granular loose materials that act as the skeleton or filler in concrete, are divided into coarse aggregates (such as pebbles and crushed stone) and fine aggregates (such as natural sand and manufactured sand). Before being put into use, they usually need to be pre-crushed by a crusher. However, traditional aggregate crushers currently exhibit many problems in practical applications. On the one hand, most traditional equipment relies on manual handling to transport and feed aggregates into the crusher from top to bottom. This operation causes the aggregates falling from a height to directly impact the crushing rollers. Over time, this not only causes the concentric axis of the crushing rollers to shift but also easily leads to malfunctions in the crushing rollers themselves, seriously affecting the normal operation and service life of the equipment, and increasing equipment maintenance costs and downtime. On the other hand, the aggregate crushing process generates a large amount of dust, which accumulates around the crushing rollers. The presence of dust not only harms the health of operators, and long-term inhalation may lead to occupational diseases such as pneumoconiosis, but also accelerates the wear and tear of equipment parts and reduces equipment performance.
[0003] Therefore, it is essential to invent an aggregate crusher for concrete production. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an aggregate crusher for concrete production, including an aggregate crusher body, a feed hopper, a dust exhaust fan, support legs, side supports, conveyor rollers, a conveyor motor, a conveyor belt, crushing rollers, and a crushing motor. The aggregate crusher body has a feed hopper on one side of its upper part, and a dust exhaust fan is fixedly installed on its top. Support legs are fixedly installed at the four lower corners of the aggregate crusher body. Two symmetrically arranged side supports are fixedly installed on the side of the aggregate crusher body. Conveyor rollers are rotatably installed on the upper ends of the two side supports and inside the aggregate crusher body. One end of one of the conveyor rollers rotatably protrudes from the aggregate crusher body and is fixed to the output end of the conveyor motor fixedly installed outside the aggregate crusher body. Conveyor belts are mounted on the two conveyor rollers. One end of the corresponding crushing roller rotatably installed inside the aggregate crusher body rotatably protrudes outside and is fixed to the output end of the corresponding crushing motor fixedly installed outside the aggregate crusher body.
[0005] Preferably, the aggregate crusher body includes a shell, a buffer guide plate, a spring, a crushing side seat, a filter plate, and a large discharge port. A feed hopper is provided on the upper side of the shell, a dust exhaust fan is fixedly installed on its top, and a support leg is fixedly installed on its bottom. Two side supports are fixedly installed on the outer surface of the shell. The conveying motor and the crushing motor are fixedly installed on the outside of the shell. A crushing roller and a conveying roller are rotatably installed inside the shell. The buffer guide plate rotatably installed inside the shell is elastically connected to one of the crushing side seats through a spring. The crushing side seat fixedly installed inside the shell is located on one side of the crushing roller. A filter plate is installed at the bottom of the shell, and a large discharge port is provided through its lower side.
[0006] Preferably, a conveying roller is rotatably mounted inside the housing, located below the dust exhaust fan and above the buffer guide plate. The conveying roller can drive the conveyor belt and allow the aggregate carried above it to enter the housing through the feed hopper.
[0007] Preferably, the aggregate on the conveyor belt can fall onto the inclined rotating buffer guide plate, the inner side of the buffer guide plate is elastically connected to the crushing side seat below by a spring, and the buffer guide plate is located above the crushing side seat and the crushing roller.
[0008] Preferably, the two crushing rollers are symmetrically fixed between the two crushing side seats on the inner wall of the housing. The two crushing rollers interlock with each other, and their shapes are perfectly adapted to the inner surface of the crushing side seats. The upper inner surface of the crushing side seats is a wavy surface that is inclined toward the crushing rollers.
[0009] Preferably, the lower part of the housing is provided with an opening structure, at which a filter plate is fixedly installed. The filter plate is located directly below the two crushing rollers and has an inverted "V" shape structure. Its two ends extend and are fixed to the inner sidewall of the large discharge port symmetrically opened at the bottom of the housing.
[0010] Compared with the prior art, the present invention has the following beneficial effects:
[0011] This invention achieves automatic feeding of aggregates by installing two symmetrical side supports on the side of the aggregate crusher body, and rotatably mounting conveyor rollers on the upper end of the side supports and inside the aggregate crusher body, in conjunction with a conveyor motor and conveyor belt. This avoids the direct impact on the crushing rollers caused by manual high-altitude throwing of aggregates, effectively protecting the concentric shaft of the crushing rollers, reducing the probability of equipment failure, extending the service life of the crushing rollers and the overall equipment, lowering equipment maintenance costs and downtime frequency, and improving production efficiency.
[0012] This invention features a dust extraction fan fixedly installed on the top of the aggregate crusher body, which can promptly discharge dust generated during the crushing process, significantly reducing dust accumulation around the crushing rollers and in the working area. This creates a healthier and more environmentally friendly working environment for operators, reducing the risk of occupational diseases; it also reduces dust corrosion of equipment parts, slows down equipment wear, ensures stable equipment operation, improves equipment performance and reliability, and meets environmental protection production requirements, reducing the risk of environmental violations for enterprises.
[0013] Furthermore, the buffer guide plate, rotatably mounted inside the housing of this invention, is elastically connected to the crushing side seat via a spring. When aggregate from the conveyor belt falls onto the buffer guide plate, the buffer guide plate, under the action of the spring, provides a buffering and shock-absorbing effect, further reducing the impact force of the aggregate on the crushing roller below. Moreover, the two crushing rollers are located between the symmetrically fixed crushing side seats on the inner wall of the housing, interlocking with each other and adapting to the inner surface of the crushing side seats. The wavy curved surface design on the upper inner side of the crushing side seats helps guide the aggregate into the crushing rollers, improving crushing efficiency and effect. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a partial cross-sectional structural diagram of the present invention.
[0016] Figure 3 This is a schematic diagram of the bottom structure of this utility model.
[0017] In the picture:
[0018] 1. Main body of aggregate crusher, 11. Shell, 12. Buffer guide plate, 13. Spring, 14. Crushing side seat, 15. Filter plate, 16. Large block discharge port, 2. Feed hopper, 3. Dust exhaust fan, 4. Support leg, 5. Side support, 6. Conveying roller, 7. Conveying motor, 8. Conveying belt, 9. Crushing roller body, 10. Crushing motor. Detailed Implementation
[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.
[0021] As attached Figure 1 To be continued Figure 3 As shown:
[0022] This utility model provides an aggregate crusher for concrete production, comprising an aggregate crusher body 1, a feed hopper 2, a dust exhaust fan 3, support legs 4, side supports 5, a conveyor roller 6, a conveyor motor 7, a conveyor belt 8, a crushing roller body 9, and a crushing motor 10. The aggregate crusher body 1 has a feed hopper 2 on one side of its upper part, and a dust exhaust fan 3 is fixedly installed on its top. Support legs 4 are fixedly installed at the four lower corners of the aggregate crusher body 1. Two symmetrically arranged side supports 5 are fixedly installed on the sides of the aggregate crusher body 1. Conveying rollers 6 are rotatably installed on the upper ends of the two side supports 5 and inside the aggregate crusher body 1. One end of one of the conveying rollers 6 rotatably protrudes out of the aggregate crusher body 1 and is fixed to the output end of the conveying motor 7 fixedly installed outside the aggregate crusher body 1. Conveying belts 8 are mounted on the two conveying rollers 6. One end of the crushing roller body 9 rotatably installed inside the aggregate crusher body 1 rotatably protrudes out and is fixed to the output end of the corresponding crushing motor 10 fixedly installed outside the aggregate crusher body 1.
[0023] Furthermore, the core components of the aggregate crusher body 1 include a shell 11, a buffer guide plate 12, a spring 13, a crushing side seat 14, a filter plate 15, and a large discharge port 16. The shell 11 is welded from high-strength wear-resistant steel, with a feed hopper 2 on one side for aggregate input; a dust exhaust fan 3 is fixedly installed at the top to promptly remove dust generated during the crushing process, ensuring a clean working environment; support legs 4 are bolted to the bottom to support the entire crusher. Two side supports 5 are also welded to the outer surface of the shell 11, providing a rotating mounting base for the conveyor roller 6. The conveyor motor 7 and the crushing motor 10 are bolted to the outside of the shell 11, providing power to the conveyor roller 6 and the crushing roller 9, respectively. Inside the shell 11, the crushing roller 9 and the conveyor roller 6 are rotatably mounted via bearings, enabling stable rotational movement. The buffer guide plate 12, which is rotatably installed inside the housing 11, is elastically connected to one of the crushing side seats 14 via a spring 13, and can play a buffering role when the aggregate impacts. The crushing side seat 14, which is fixedly installed inside the housing 11, is located on one side of the crushing roller body 9 and provides installation support for the crushing roller body 9. A filter plate 15 is installed below the housing 11, and a large discharge port 16 is opened through the lower side to discharge large aggregates that do not meet the crushing particle size requirements.
[0024] Furthermore, a conveyor roller 6 is rotatably mounted inside the housing 11 via bearings. This conveyor roller 6 is located below the dust exhaust fan 3 and above the buffer guide plate 12. The conveyor roller 6 is driven to rotate by the conveyor motor 7 via belt drive, which in turn drives the conveyor belt 8 to run synchronously. The conveyor belt 8 is made of wear-resistant rubber with anti-slip textures on its surface, allowing the aggregate it carries to smoothly enter the housing 11 through the feed hopper 2, achieving efficient aggregate conveying.
[0025] Furthermore, when the aggregate on the conveyor belt 8 reaches its end, it falls onto the inclined, rotating buffer guide plate 12. The buffer guide plate 12 is made of high-manganese steel, possessing excellent wear resistance and toughness. Its inner side is elastically connected to the crushing side seat 14 below via a high-strength compression spring 13. This elastic connection allows the buffer guide plate 12 to undergo a certain displacement when impacted by the aggregate, effectively buffering the impact force and evenly guiding the aggregate into the crushing area below. The buffer guide plate 12 is located above the crushing side seat 14 and the crushing roller 9, ensuring that the aggregate accurately enters the working range of the crushing roller 9.
[0026] Furthermore, two crushing rollers 9 are symmetrically fixed between two crushing side seats 14 on the inner wall of the housing 11, and are mounted on the crushing side seats 14 via high-precision bearings. The two crushing rollers 9 interlock, and their shapes perfectly match the inner surfaces of the crushing side seats 14, enabling efficient crushing operations. The crushing rollers 9 are made of high-chromium alloy, and their surfaces undergo special hardening treatment, resulting in extremely high wear resistance and crushing capacity. The crushing side seats 14 are made of cast steel, with a wavy surface on the upper inner side. This surface is inclined towards the crushing rollers 9, guiding the aggregate smoothly into the interlocking area of the crushing rollers 9 and improving crushing efficiency.
[0027] Furthermore, the lower interior of the housing 11 is designed with an opening, through which a filter plate 15 is bolted and installed. The filter plate 15 is located directly below the two crushing rollers 9, and is an inverted "V" shape. It is made of stainless steel and has evenly distributed screen holes on its surface for screening the crushed aggregate. Both ends of the filter plate 15 extend and are welded to the inner walls of symmetrically opened large discharge ports 16 at the bottom of the housing 11. Large aggregate pieces that do not pass through the screen holes of the filter plate 15 will be discharged from the large discharge ports 16 for secondary crushing.
[0028] The working principle is as follows: First, the aggregate is placed on the conveyor belt 8 through the feed hopper 2. The conveyor motor 7 drives the conveyor roller 6 to rotate, thereby driving the conveyor belt 8 to transport the aggregate into the main body 1 of the aggregate crusher. Next, the aggregate on the conveyor belt 8 reaches the end and falls onto the inclined buffer guide plate 12. The buffer guide plate 12 is elastically connected to the crushing side seat 14 through the spring 13, which can buffer the impact force of the aggregate and evenly guide the aggregate into the crushing area below. Then, the crushing motor 10 drives the crushing roller body 9 to rotate. The two interlocking crushing roller bodies 9, supported by the crushing side seat 14, crush the incoming aggregate. The wavy surface on the inner side of the crushing side seat 14 can guide the aggregate smoothly into the interlocking area of the crushing roller body 9. Afterward, the crushed aggregate falls onto the filter plate 15. The filter plate 15 screens the aggregate. Aggregate that meets the particle size requirements is discharged through the screen holes, while large aggregate that does not pass through the screen holes is discharged from the large aggregate discharge port 16 for secondary crushing. Meanwhile, throughout the crushing process, the dust exhaust fan 3 works continuously to promptly remove the dust generated during crushing and maintain a clean working environment.
[0029] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.
Claims
1. An aggregate crusher for producing concrete, characterized in that, The aggregate crusher includes a main body (1), a feed hopper (2), a dust exhaust fan (3), support legs (4), side supports (5), a conveyor roller (6), a conveyor motor (7), a conveyor belt (8), a crushing roller body (9), and a crushing motor (10). The feed hopper (2) is located on one side of the upper part of the main body (1), and a dust exhaust fan (3) is fixedly installed on its top. Support legs (4) are fixedly installed at the four lower corners of the main body (1). Two symmetrically arranged side supports (5) are fixedly installed on the side of the main body (1). (5) The upper end of the aggregate crusher body (1) is rotatably installed with conveying rollers (6), one end of one of the conveying rollers (6) rotates out of the aggregate crusher body (1) and is fixed to the output end of the conveying motor (7) fixedly installed outside the aggregate crusher body (1). The two conveying rollers (6) are equipped with conveying belts (8); one end of the crushing roller body (9) rotatably installed inside the aggregate crusher body (1) rotates out and is fixed to the output end of the corresponding crushing motor (10) fixedly installed outside the aggregate crusher body (1).
2. The aggregate crusher for producing concrete as described in claim 1, characterized in that: The main body (1) of the aggregate crusher includes a shell (11), a buffer guide plate (12), a spring (13), a crushing side seat (14), a filter plate (15), and a large discharge port (16). A feed hopper (2) is provided on the upper side of the shell (11), a dust exhaust fan (3) is fixedly installed on its top, and a support leg (4) is fixedly installed on its bottom. Two side supports (5) are fixedly installed on the outer surface of the shell (11). The conveying motor (7) and the crushing motor (10) are fixedly installed on the outside of the shell (11). A crushing roller (9) and a conveying roller (6) are rotatably installed inside the shell (11). The buffer guide plate (12) rotatably installed inside the shell (11) is elastically connected to one of the crushing side seats (14) through the spring (13). The crushing side seat (14) fixedly installed inside the shell (11) is located on one side of the crushing roller (9). A filter plate (15) is installed below the shell (11), and a large discharge port (16) is opened through the lower side.
3. The aggregate crusher for producing concrete as described in claim 2, characterized in that: The conveying roller (6) is rotatably installed inside the housing (11). The conveying roller (6) is located below the dust exhaust fan (3) and above the buffer guide plate (12). The conveying roller (6) can drive the conveying belt (8) and allow the aggregate carried above it to enter the housing (11) through the feed hopper (2).
4. The aggregate crusher for producing concrete as described in claim 3, characterized in that: The aggregate on the conveyor belt (8) can fall onto the inclined rotating buffer guide plate (12). The inner side of the buffer guide plate (12) is elastically connected to the crushing side seat (14) below by a spring (13). The buffer guide plate (12) is located above the crushing side seat (14) and the crushing roller (9).
5. The aggregate crusher for producing concrete as described in claim 4, characterized in that: The two crushing rollers (9) are symmetrically fixed between the two crushing side seats (14) on the inner wall of the housing (11). The two crushing rollers (9) interlock with each other, and their shape is perfectly matched with the inner side of the crushing side seat (14). The upper inner side of the crushing side seat (14) is a wavy surface, which is inclined towards the crushing rollers (9).
6. The aggregate crusher for producing concrete as described in claim 5, characterized in that: The lower part of the housing (11) is provided with an opening structure, and a filter plate (15) is fixedly installed at the opening. The filter plate (15) is located directly below the two crushing rollers (9) and has an inverted "V" shape structure. Its two ends extend and are fixed to the inner side wall of the large discharge port (16) symmetrically opened below the housing (11).