Aggregate crushing and screening integrated machine

Abstract

The application relates to the technical field of aggregate processing equipment, in particular to an aggregate breaking and screening all-in-one machine. In the aggregate breaking and screening all-in-one machine provided in the embodiment of the application, a centrifugal material conveying fan is arranged between a breaking and screening chamber and a dust collecting hood, the centrifugal material conveying fan is communicated with the breaking and screening chamber through an air duct, and is communicated with the dust collecting hood through an air outlet pipe. In addition, a fog gun is arranged at the opening of the other end of the dust collecting hood. In this way, the dust generated in the breaking and screening operation process can be adsorbed into the dust collecting hood through the centrifugal material conveying fan, and the dust can be settled through the spraying of the fog gun. The design of the cooperation of the dust collecting hood and the fog gun can make the spraying end of the fog gun extend into the dust collecting hood, and make the water mist and the dust fully contact, thereby greatly improving the dust settling effect.

Description

Technical Field

[0001] This application relates to the field of aggregate processing equipment technology, and more specifically, to an integrated aggregate crushing and screening machine. Background Technology

[0002] Asphalt concrete is a composite material made by mixing artificially selected mineral aggregates with a specific gradation and a certain proportion of road asphalt materials under strict process control. Asphalt concrete mainly includes the following types of materials: asphalt, mineral aggregates, aggregates, fillers and additives. Aggregates are the core component of asphalt concrete, and they are usually made from natural gravel or crushed stone.

[0003] In related technologies, the uniformity of aggregate size has a crucial impact on the service life and safety of roads, and different road specifications require aggregates of different sizes. Therefore, to meet the specific needs of roads, aggregates need to be crushed and screened. Traditionally, integrated crushing and screening machines are typically used for the combined crushing and screening of aggregates.

[0004] However, in actual crushing and screening operations, aggregates generate a large amount of dust during crushing and screening. This dust, dispersed in the air, affects the surrounding environment and the health of workers. Furthermore, the excessive dust emissions do not meet modern green environmental protection requirements. Traditional integrated crushing and screening machines often use simple covers for dust prevention, achieving a dust collection rate of less than 60%, and lack targeted settling measures, making it difficult to completely eliminate the dust problem. Utility Model Content

[0005] In view of this, the present application provides an integrated aggregate crushing and screening machine to solve the problems of incomplete dust collection and low settling efficiency in related technologies.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions: An integrated aggregate crushing and screening machine includes: frame; The crushing and screening mechanism includes a crushing and screening shell, which is located on the top of the frame. A crushing roller is rotatably installed inside the crushing roller, and an arc-shaped screen plate is arranged around the crushing roller. The crushing and screening shell is also connected to the feeding channel. A centrifugal conveying fan is fixedly installed on the top of the frame and located next to the screen crusher shell, and is connected to the screen crusher shell through an air duct; A dust collection hood is installed on the top of the frame and located next to the centrifugal conveying fan, and is connected to the air outlet pipe of the centrifugal conveying fan. A fog cannon is fixedly installed on the top of the frame and located next to the dust collection hood. The fog cannon is used to spray water mist into the dust collection hood through the side opening.

[0007] In some possible implementations, the air duct is located in the area below the feed channel and beside the arc-shaped screen plate.

[0008] In some possible implementations, the arc-shaped screen plate is fixedly connected to the inner surface of the crushing shell, and is located below the crushing roller.

[0009] In some possible implementations, the beginning of the arc-shaped screen plate is connected to the end of the feed channel to form a continuous structure.

[0010] Among some possible implementation methods, guide rollers are also included; The guide roller is fixedly mounted on the frame by a bracket, located above the feed channel, and rotates toward the screen shell.

[0011] Among the possible implementation methods is a buffer bed; The buffer bed is located inside the dust collection hood, and its upper surface is covered with non-woven fabric, which is located below the air outlet duct.

[0012] The aggregate crushing and screening integrated machine provided in this application embodiment has at least the following beneficial effects: In the aggregate crushing and screening integrated machine provided in this application embodiment, a centrifugal conveying fan is installed between the crushing and screening chamber and the dust collection hood. The centrifugal conveying fan is connected to the crushing and screening chamber through an exhaust pipe and to the dust collection hood through an exhaust pipe. Furthermore, a mist cannon is installed at the other end of the dust collection hood. In this way, the centrifugal conveying fan can adsorb the dust generated during the crushing and screening process into the dust collection hood, and the mist cannon sprays the dust to cause it to settle. This design, which combines the dust collection hood and the mist cannon, allows the mist cannon's spray tip to extend into the dust collection hood, ensuring sufficient contact between the water mist and the dust, thereby greatly improving the dust settling effect. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is a schematic diagram of the integrated aggregate crushing and screening machine provided in the embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the side structure; Figure 3 for Figure 2 Schematic diagram of the internal structure of the intermediate crusher screen shell; Figure 4 for Figure 3 Assembly diagram of the centrifugal conveying fan with the crushing screen shell and dust collection hood; Figure 5 for Figure 4 Side sectional view of the dust collection hood; Figure 6 for Figure 5 Exploded view of the centrifugal conveying fan, dust collection hood, and buffer bed; Figure 7 for Figure 6 Schematic diagram of the intermediate buffer bed; Figure 8 This is a schematic diagram of the guide roller assembly provided for another embodiment of this application.

[0015] In the picture: 100. Frame; 200. Crushing screen shell; 210. Crushing roller; 220. Arc screen plate; 300. Feed channel; 400. Centrifugal conveying fan; 410. Exhaust duct; 420. Exhaust duct; 500. Dust collection hood; 510. Opening; 600. Fog cannon; 700. Guide roller; 800. Buffer bed; 900. Non-woven fabric. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0017] like Figures 1-7 As shown in the figure, the aggregate crushing and screening integrated machine provided in this application embodiment includes a frame, a crushing and screening mechanism, a centrifugal conveying fan, a dust collection hood, and a mist cannon. The frame is the supporting structure of the entire crushing and screening integrated machine and is welded from multiple 304 stainless steel square tubes. The crushing and screening mechanism is fixedly installed on the top of the frame with bolts. The crushing and screening mechanism is used to crush large aggregates and perform subsequent screening.

[0018] The crushing and screening mechanism consists of a crushing screen shell, crushing rollers, and an arc-shaped screen plate. The crushing screen shell is fixedly installed on the top of the frame. Inside the crushing screen shell, a crushing roller driven by a motor is rotatably connected. The length of the crushing roller is adapted to the length of the crushing screen shell, and multiple crushing teeth are evenly distributed on its exterior. Preferably, the crushing teeth can be made of high-manganese steel with high hardness.

[0019] An arc-shaped screen plate is fixedly installed around the crushing roller. Specifically, the side of the arc-shaped screen plate is fixedly connected to the crushing screen shell by welding. The arc-shaped screen plate is located below the crushing roller, and there is a certain distance between them. Furthermore, the arc-shaped screen plate has multiple screen holes along its thickness direction, and the diameter of the screen holes can be adjusted according to the required aggregate specifications. In addition, a feed channel is connected to the feed inlet of the crushing screen shell. The feed channel is mounted on the top of the frame via a support frame at the bottom, and the feed channel has an overall downward inclined structure.

[0020] In this embodiment, a dust collection hood is also provided on the top of the frame. The dust collection hood is located in the side area of ​​the crushing and screening shell. The first end of the dust collection hood along its length is a sealed structure, and the second end has an opening. A centrifugal conveying fan is provided between the dust collection hood and the crushing and screening shell. The air intake pipe of the centrifugal conveying fan is connected to the crushing and screening shell, and the air outlet pipe of the centrifugal conveying fan is connected to the first end of the dust collection hood to ensure that it can generate sufficient negative pressure to pour dust into the dust collection hood. When large pieces of aggregate slide down into the crushing and screening shell through the feed channel and undergo subsequent crushing and screening operations, the generated dust will be conveyed to the dust collection hood by the centrifugal conveying fan.

[0021] like Figure 6 and Figure 7 As shown, a mist cannon is also fixedly installed on the top of the frame, located beside the second opening of the dust collection hood. The spray nozzle of the mist cannon is located inside the opening. In actual use, water mist can be sprayed into the dust collection hood through the mist cannon, thereby causing the dust entering the hood to settle and preventing dust pollution of the environment and its impact on the health of workers.

[0022] In the aggregate crushing and screening integrated machine provided in this application embodiment, a centrifugal conveying fan is installed between the crushing and screening chamber and the dust collection hood. The centrifugal conveying fan is connected to the crushing and screening chamber through an exhaust pipe and to the dust collection hood through an exhaust pipe. Furthermore, a mist cannon is installed at the other end of the dust collection hood. In this way, the centrifugal conveying fan can adsorb the dust generated during the crushing and screening process into the dust collection hood, and the mist cannon sprays the dust to cause it to settle. This design, which combines the dust collection hood and the mist cannon, allows the mist cannon's spray tip to extend into the dust collection hood, ensuring sufficient contact between the water mist and the dust, thereby greatly improving the dust settling effect.

[0023] In some embodiments, the exhaust duct is located in the area below the feed channel and beside the arc-shaped screen plate. This allows the exhaust duct to be closer to the source of dust generation within the crushing chamber, thereby enhancing the directional capture capability of dust. Simultaneously, this structural design reduces the probability of dust escaping after spreading within the crushing chamber, thus significantly improving the dust collection efficiency of the centrifugal conveying fan.

[0024] In some embodiments, the beginning of the arc-shaped screen plate is connected to the end of the feed channel to form a continuous structure. This structural design achieves a seamless transition of aggregate from feeding to screening, avoiding accumulation and jamming of aggregate at the junction of the feed channel and the arc-shaped screen plate, thus ensuring smooth material conveying. Simultaneously, the continuous structure reduces secondary dust generated by the impact gap between aggregates, further optimizing dust control and improving the overall operating efficiency of the equipment.

[0025] In some embodiments, such as Figure 8 As shown, it also includes a guide roller, which is fixedly mounted on the frame by a bracket. It is located above the feed channel and rotates towards the crusher shell. The active rotation of the guide roller provides an auxiliary pushing force to the aggregate in the feed channel, especially for large, moist, and easily sticky aggregates. This design effectively prevents aggregate blockage in the feed channel, thus ensuring uniform feeding.

[0026] In some possible ways of implementation, such as Figure 6 and Figure 7 As shown, it also includes a buffer bed located inside the dust collection hood, with a non-woven fabric covering the upper surface of the buffer bed, positioned below the exhaust duct. When the centrifugal conveying fan sends the dust-laden airflow through the exhaust duct into the dust collection hood, the non-woven fabric can absorb the water mist sprayed by the mist cannon and the settled dust, preventing the dust from being re-entrained inside the dust collection hood. Furthermore, the non-woven fabric can be easily replaced, reducing equipment maintenance costs and further enhancing the long-term effectiveness of the dust control system.

[0027] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0028] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0029] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0030] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0031] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0032] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).

[0033] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure, or between any pairs of lateral planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated aggregate crushing and screening machine, characterized in that, include: frame; The crushing and screening mechanism includes a crushing and screening shell, which is located on the top of the frame. A crushing roller is rotatably installed inside the crushing roller, and an arc-shaped screen plate is arranged around the crushing roller. The crushing and screening shell is also connected to the feeding channel. A centrifugal conveying fan is fixedly installed on the top of the frame and located next to the screen crusher shell, and is connected to the screen crusher shell through an air duct; A dust collection hood is installed on the top of the frame and located next to the centrifugal conveying fan, and is connected to the air outlet pipe of the centrifugal conveying fan. A mist cannon is fixedly installed on the top of the frame and located next to the dust collection hood. The mist cannon is used to spray water mist into the dust collection hood through the side opening.

2. The aggregate crushing and screening integrated machine according to claim 1, characterized in that: The air duct is located in the area below the feed channel and next to the arc-shaped screen plate.

3. The aggregate crushing and screening integrated machine according to claim 1, characterized in that: The arc-shaped screen plate is fixedly connected to the inner surface of the screen shell and is located below the crushing roller.

4. The aggregate crushing and screening integrated machine according to claim 3, characterized in that: The beginning of the arc-shaped screen plate is connected to the end of the feed channel to form a continuous structure.

5. The aggregate crushing and screening integrated machine according to claim 1, characterized in that: It also includes guide rollers; The guide roller is fixedly mounted on the frame by a bracket, located above the feed channel, and rotates toward the screen shell.

6. The aggregate crushing and screening integrated machine according to claim 1, characterized in that: It also includes a buffer bed; The buffer bed is located inside the dust collection hood, and its upper surface is covered with non-woven fabric, which is located below the air outlet duct.

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