A recycled concrete aggregate conveying device

Abstract

The utility model provides a kind of recycled concrete aggregate conveying device, including conveying frame plate, the conveying frame plate and mobile support are equipped with two, and the two are mutually installed together;Conveying roller is installed between conveying frame plate, conveying roller and the limiting roller of belt cleaning unit are equipped with conveying belt, belt cleaning unit is installed on conveying frame plate, and the driving component installed on conveying frame plate is connected with conveying roller;Dust arrestor is arranged on conveying frame plate, dust arrestor is laid with dust extraction fan, dust extraction fan is located in the inner side of the flow guide channel fixedly installed outside dust arrestor, and flow guide channel is connected with the collecting box installed on conveying frame plate;The utility model washes conveying belt by high pressure water beam and limiting roller cooperation, water absorption cotton roller and squeeze water roller reduce liquid residue, high pressure gas beam auxiliary cleaning, ensure that conveying belt is efficiently cleaned.Highly compact machine set structure, it is convenient to maintain, and it is installed below conveying frame plate.Cleaning cover is equipped with drain pipe mouth to communicate sewage tank, timely pollution discharge, maintain efficient cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of aggregate conveying technology, and in particular relates to a recycled concrete aggregate conveying device. Background Technology

[0002] In the production process of a concrete mixing plant, to prepare concrete that meets the requirements, a belt conveyor is used to transport concrete aggregates into the mixer, where they are thoroughly mixed with other raw materials. To effectively reduce aggregate residue adhering to the conveyor belt surface, various self-cleaning conveyor devices have emerged on the market. Among them, a concrete aggregate conveyor with a cleaning function described in Chinese utility model patent document CN 222081687 U is quite representative. This device uses a liquid medium and high-pressure jetting to clean aggregate residues from the conveyor belt surface.

[0003] While the high-pressure water jets in this device can effectively remove aggregate residue from the conveyor belt surface to some extent, significant shortcomings have been revealed in practical applications. After cleaning, a large amount of liquid inevitably remains on parts of the conveyor belt surface. This residual liquid alters the physical properties of the conveyor belt surface, making it easier for subsequently transported aggregate to adhere to it. This not only increases the difficulty of cleaning the conveyor belt, but over time, the accumulated aggregate can also affect its normal operation, reduce conveying efficiency, and even lead to equipment failure, increasing maintenance costs and downtime, thus adversely impacting the continuous production of the concrete mixing plant. Furthermore, the lack of any diversion or treatment mechanism for subsequent wastewater causes it to flow extensively around the device.

[0004] Therefore, it is essential to invent a recycled concrete aggregate conveying device. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a recycled concrete aggregate conveying device, comprising a conveyor frame, a movable support, conveyor rollers, a belt cleaning unit, a conveyor belt, a drive component, a dust cover, a dust extraction fan, a guide channel, and a collection box. Two conveyor frames and movable supports are provided and installed together. Two conveyor rollers are rotatably mounted between the two conveyor frames. The conveyor belt is mounted on the conveyor rollers and the limiting rollers of the belt cleaning unit. The belt cleaning unit is mounted on the conveyor frame. The output end of the drive component fixedly mounted on one of the conveyor frames is connected to one of the conveyor rollers. A dust cover is installed on both conveyor frames, and several dust extraction fans are arranged on the dust cover. The dust extraction fans are located inside the guide channel fixedly mounted outside the dust cover, and the guide channel is connected to the collection box fixedly mounted on one of the conveyor frames.

[0006] Preferably, a drive unit and a collection box are respectively installed on the sides of the two conveyor frame plates, the drive unit and the collection box are installed separately, and the inside of the collection box is filled with porous absorbent cotton; a belt cleaning unit is installed below the conveyor frame plates.

[0007] Preferably, the belt cleaning unit includes a cleaning hood, a limiting roller, a flushing water pipe, a water injection port, and high-pressure nozzles. The cleaning hood is fixedly installed below the two conveyor frame plates. The limiting roller is rotatably installed inside the cleaning hood, and two flushing water pipes are fixedly installed thereon. Each flushing water pipe is provided with several high-pressure nozzles. The flushing water pipes are all connected to the water injection port installed outside the cleaning hood.

[0008] Preferably, the two flushing water pipes are located on one side of the limiting roller, and the high-pressure nozzles on the flushing water pipes spray high-pressure water jets that can act on the surface of the conveyor belt; and the conveyor belt can form an arc-shaped surface under the action of the limiting rollers, which is tangent to the high-pressure water jets sprayed by the high-pressure nozzles.

[0009] Preferably, one side of one of the flushing pipes is provided with a water-absorbing cotton roller, which is rotatably installed inside the cleaning hood. The water-absorbing cotton of the water-absorbing cotton roller is in contact with the conveyor belt. Water-squeezing rollers are arranged around the water-absorbing cotton roller, which are rotatably installed inside the cleaning hood. The water-squeezing rollers are in close contact with the water-absorbing cotton of the water-absorbing cotton roller and squeeze it.

[0010] Preferably, the high-pressure air pipe fixedly installed inside the cleaning hood is located on one side of the absorbent cotton roller and the squeezing roller. The high-pressure air pipe is connected to the output end of the high-pressure pump fixedly installed outside the cleaning hood. The high-pressure air pipe is equipped with a high-pressure air nozzle, and the high-pressure air jet generated therefrom can act on the surface of the conveyor belt.

[0011] Preferably, a drain outlet is provided at the lowest point of the cleaning hood, and the drain outlet is connected to the sewage tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model's belt cleaning unit features a clever design. High-pressure nozzles on the flushing water pipes spray high-pressure water jets, which, in conjunction with limiting rollers, form an arc-shaped surface on the conveyor belt tangential to the water jets. This reduces the required deployment area and number of nozzles, enabling more comprehensive and efficient rinsing away of aggregate residue from the conveyor belt surface. Simultaneously, absorbent cotton rollers contact the conveyor belt to absorb residual liquid, while surrounding squeezing rollers press the absorbent cotton to expel water, significantly reducing liquid residue on the conveyor belt surface. This effectively lowers the likelihood of subsequent aggregate adhesion, avoiding aggregate adhesion problems caused by liquid residue and simplifying the conveyor belt cleaning process.

[0014] This invention utilizes a high-pressure air jet generated by a high-pressure air nozzle on a high-pressure air pipe. This jet further blows away residual fine aggregates and moisture from the conveyor belt surface, aiding in cleaning. Combined with high-pressure water jet rinsing and water-absorbing cotton rollers, it enhances the overall cleaning effect, ensuring the conveyor belt maintains a consistently clean state. This helps prevent the continuous accumulation of adhering aggregates, thus preventing disruptions to the normal operation of the conveyor belt, such as preventing jamming and slippage. It effectively guarantees conveying efficiency, reduces equipment failures, lowers maintenance costs and downtime, and ensures continuous and stable production at the concrete mixing plant.

[0015] This utility model belt cleaning unit is independently installed below the conveyor frame plate. Its compact structure facilitates disassembly and maintenance, allowing workers to easily inspect and replace parts. A drain pipe at the lowest point of the cleaning hood connects to a wastewater tank, ensuring timely drainage of wastewater generated during cleaning. This prevents wastewater accumulation inside the cleaning hood, maintaining high efficiency and reducing the risk of corrosion from wastewater. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a half-sectional structural diagram of the belt cleaning unit and conveyor belt of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the belt cleaning unit of this utility model.

[0020] In the picture:

[0021] 1. Conveyor frame plate; 2. Movable support; 3. Conveyor roller; 4. Belt cleaning unit; 41. Cleaning hood; 42. Limiting roller; 43. Flushing water pipe; 44. Water injection port; 45. High-pressure nozzle; 46. Water-absorbing cotton roller; 47. Water-squeezing roller; 48. High-pressure air pipe; 49. High-pressure pump; 40. Drainage port; 5. Conveyor belt; 6. Drive unit; 7. Dustproof cover; 8. Dust extraction fan; 9. Guide channel; 10. Collection box. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] As attached Figure 1 To be continued Figure 4 As shown:

[0025] This utility model provides a recycled concrete aggregate conveying device, comprising a conveyor frame plate 1, a movable support 2, conveyor rollers 3, a belt cleaning unit 4, a conveyor belt 5, a drive component 6, a dust cover 7, a dust extraction fan 8, a guide channel 9, and a collection box 10. Two conveyor frame plates 1 and two movable supports 2 are provided and installed together. Two conveyor rollers 3 are rotatably mounted between the two conveyor frame plates 1. The conveyor rollers 3 and the limit rollers 42 of the belt cleaning unit 4 are equipped with the conveyor belt 5. The belt cleaning unit 4 is mounted on the conveyor frame plate 1. The output end of the drive component 6, which is fixedly mounted on one of the conveyor frame plates 1, is connected to one of the conveyor rollers 3. Dust covers 7 are installed on both conveyor frame plates 1, and several dust extraction fans 8 are arranged on the dust covers 7. The dust extraction fans 8 are located inside the guide channel 9, which is fixedly mounted outside the dust cover 7. The guide channel 9 is connected to the collection box 10, which is fixedly mounted on one of the conveyor frame plates 1.

[0026] Furthermore, a drive unit 6 and a collection box 10 are respectively installed on the sides of the two conveyor frame plates 1, and the drive unit 6 and the collection box 10 are installed separately. This separate installation design avoids the vibration and heat generated during the operation of the drive unit 6 from affecting the collection box 10, ensuring the normal dust collection function of the collection box 10. The drive unit 6 can be a motor, fixedly connected to the conveyor frame plate 1 by bolts or other means. The output shaft of the motor is connected to one of the conveyor rollers 3, providing power for the operation of the conveyor belt 5. The collection box 10 is also fixed to the side of the conveyor frame plate 1 by bolts or other connecting parts, and its interior is filled with porous absorbent cotton. The porous absorbent cotton can be made of polyurethane, which has good adsorption performance and can effectively adsorb dust particles entering the collection box 10, preventing dust leakage into the surrounding environment. A belt cleaning unit 4 is installed below the conveyor frame plate 1, and the two can be fixed together by welding or bolts to ensure the stable and reliable operation of the belt cleaning unit 4.

[0027] Furthermore, the belt cleaning unit 4 includes a cleaning hood 41, a limiting roller 42, flushing water pipes 43, water inlets 44, and high-pressure nozzles 45. The cleaning hood 41 is made of stainless steel, possessing good corrosion resistance and strength, and is fixedly installed below the two conveyor frame plates 1 by welding or bolting. The cleaning hood 41 protects the internal components and prevents cleaning water from splashing out. Inside the cleaning hood 41, the limiting roller 42 is rotatably mounted via bearings. Both ends of the limiting roller 42 are mounted on bearing seats, which are fixedly connected to the cleaning hood 41, ensuring the limiting roller 42 can rotate freely. Simultaneously, two flushing water pipes 43 are fixedly installed inside the cleaning hood 41 via pipe clamps, etc., and each flushing water pipe 43 is equipped with several high-pressure nozzles 45 via threaded connections. The flushing water pipes 43 are all connected to the water inlets 44 installed outside the cleaning hood 41. The water inlets 44 can be connected to an external water source via flanges or threaded connections to introduce water into the flushing water pipes 43.

[0028] Furthermore, the two flushing water pipes 43 are located on one side of the limiting roller 42, with their specific positions rationally arranged according to the running direction of the conveyor belt 5 and the cleaning requirements. The high-pressure water jets sprayed from the high-pressure nozzles 45 mounted on the flushing water pipes 43 can act on the surface of the conveyor belt 5. When the conveyor belt 5 passes the limiting roller 42, it forms an arc-shaped surface due to the action of the limiting roller 42. To ensure that the high-pressure water jets can fully act on the surface of the conveyor belt 5, this arc-shaped surface is tangent to the high-pressure water jets sprayed from the high-pressure nozzles 45. This tangential design allows the high-pressure water jets to clean the surface of the conveyor belt 5 with maximum impact force and coverage area, improving the cleaning effect and more effectively removing aggregate residues from the surface of the conveyor belt 5.

[0029] Furthermore, one side of one of the flushing water pipes 43 is equipped with a water-absorbing cotton roller 46. The water-absorbing cotton roller 46 is rotatably mounted inside the cleaning cover 41 via bearings, and the bearing seats at both ends are fixed to the inner wall of the cleaning cover 41. The water-absorbing cotton of the water-absorbing cotton roller 46 is made of highly absorbent and wear-resistant fiber material, and it is in close contact with the conveyor belt 5. When the conveyor belt 5 passes over the water-absorbing cotton roller 46, the water-absorbing cotton can absorb the residual moisture on the surface of the conveyor belt 5. Water-squeezing rollers 47 are arranged around the water-absorbing cotton roller 46. The water-squeezing rollers 47 are also rotatably mounted inside the cleaning cover 41 via bearings, and the bearing seats of the water-squeezing rollers 47 are fixedly connected to the cleaning cover 41. The water-squeezing rollers 47 are in close contact with the water-absorbing cotton of the water-absorbing cotton roller 46 and squeeze it. During the rotation of the water-absorbing cotton roller 46, the water-squeezing rollers 47 continuously squeeze the water-absorbing cotton, squeezing out the absorbed water, so that the water-absorbing cotton can maintain good water absorption performance, thereby further reducing the liquid residue on the surface of the conveyor belt 5.

[0030] Furthermore, a high-pressure air pipe 48, fixedly installed inside the cleaning hood 41 via pipe clamps or other means, is located on one side of the absorbent cotton roller 46 and the squeezing roller 47. The high-pressure air pipe 48 is connected to the output end of a high-pressure pump 49 fixedly installed outside the cleaning hood 41 via a flange or threaded connection. The high-pressure pump 49 can compress air and deliver it to the high-pressure air pipe 48. A high-pressure air nozzle is provided on the high-pressure air pipe 48, and the high-pressure air nozzle is installed on the high-pressure air pipe 48 via a threaded connection. The high-pressure air jet generated by the nozzle can act on the surface of the conveyor belt 5. When the conveyor belt 5 passes near the high-pressure air pipe 48, the high-pressure air jet can further blow away the fine aggregates and moisture remaining on the surface of the conveyor belt 5, performing secondary cleaning and drying of the conveyor belt 5, and improving the cleanliness and dryness of the conveyor belt 5.

[0031] Furthermore, a drain outlet 40 is provided at the lowest point of the cleaning hood 41, and the drain outlet 40 is connected to the wastewater tank. The drain outlet 40 can be connected to the cleaning hood 41 by welding or threading, ensuring a good seal at the connection to prevent wastewater leakage. During the cleaning of the conveyor belt 5, the wastewater generated will flow to the lowest point of the cleaning hood 41 under gravity, and then be discharged into the wastewater tank through the drain outlet 40. The wastewater tank can be cleaned regularly to ensure the normal operation of the drainage system and prevent wastewater from accumulating inside the cleaning hood 41, which would affect the normal operation of the belt cleaning unit 4.

[0032] The working principle is as follows: First, the entire conveying device is moved to the designated working area of ​​the concrete mixing plant using the mobile support 2. The position of the device is adjusted so that the feed end of the conveyor belt 5 is aligned with the discharge port of the concrete aggregate and the discharge end is aligned with the feed port of the mixer.

[0033] Next, the drive unit 6 is started. If the drive unit 6 is a motor, the output shaft rotates after the motor is powered on, driving the conveyor roller 3 connected to it to rotate. With the cooperation of the two conveyor rollers 3 and the limit roller 42 of the belt cleaning unit 4, the conveyor belt 5 starts to run, and the concrete aggregate falls from the discharge port onto the conveyor belt 5 and is transported into the mixer as the conveyor belt 5 runs.

[0034] During the aggregate conveying process, the dust hood 7 functions to confine the dust generated during conveying within a certain space. Several dust collectors 8 start up, generating suction to draw the dust from inside the dust hood 7 into the guide channel 9, where it enters the collection box 10. The collection box 10 is filled with porous polyurethane absorbent cotton, which effectively absorbs dust particles and prevents dust from leaking into the surrounding environment.

[0035] When cleaning of the conveyor belt 5 is required after the aggregate conveying task is completed or during the process of conveying aggregate (when the drive unit 6 needs to be activated), first connect an external water source through the water injection port 44, and water enters the flushing water pipe 43 through the water injection port 44. Activate the high-pressure nozzle 45 on the flushing water pipe 43, and the high-pressure nozzle 45 sprays out a high-pressure water jet. At this time, the conveyor belt 5 forms an arc-shaped surface tangential to the high-pressure water jet under the action of the limiting roller 42. The high-pressure water jet cleans the surface of the conveyor belt 5 with maximum impact force and coverage area, washing away the aggregate residue on the surface of the conveyor belt 5.

[0036] During the cleaning process, the cleaning water carries aggregate residue and other impurities into the cleaning hood 41. Simultaneously, the cleaned conveyor belt 5 passes over the absorbent cotton roller 46 during operation. The absorbent cotton on the roller 46 comes into close contact with the conveyor belt 5, absorbing residual moisture on its surface and causing the roller 46 to rotate. During rotation, the squeezing rollers 47 around the roller 46 continuously squeeze the absorbent cotton, squeezing out the absorbed water and maintaining its good absorbency, further reducing liquid residue on the surface of the conveyor belt 5.

[0037] Subsequently, the conveyor belt 5 continues to run to the vicinity of the high-pressure air pipe 48, and the high-pressure pump 49 is started. The high-pressure pump 49 compresses the air and delivers it to the high-pressure air pipe 48. The high-pressure air nozzle on the high-pressure air pipe 48 sprays out a high-pressure air jet, which acts on the surface of the conveyor belt 5 to further blow away the fine aggregates and moisture remaining on the surface of the conveyor belt 5, and perform secondary cleaning and drying of the conveyor belt 5, thereby improving the cleanliness and dryness of the conveyor belt 5.

[0038] During the entire cleaning process, the wastewater generated flows to the lowest point of the cleaning hood 41 under gravity and is discharged into the wastewater tank connected to it through the drain pipe 40. The wastewater tank can be placed below or around the device. The wastewater tank can be cleaned regularly to ensure the normal operation of the drainage system and prevent wastewater from accumulating inside the cleaning hood 41 and affecting the normal operation of the belt cleaning unit 4. In this way, through the coordinated work of the above-mentioned components, efficient conveying of recycled concrete aggregate and effective cleaning of the conveyor belt 5 are achieved.

[0039] 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. A recycled concrete aggregate conveying device, characterized in that, The system includes a conveyor frame (1), a movable support (2), conveyor rollers (3), a belt cleaning unit (4), a conveyor belt (5), a drive unit (6), a dust cover (7), a dust extraction fan (8), a guide channel (9), and a collection box (10). Two conveyor frame plates (1) and two movable supports (2) are provided and installed together. Two conveyor rollers (3) are rotatably mounted between the two conveyor frame plates (1). The conveyor rollers (3) and the limit rollers (42) of the belt cleaning unit (4) are equipped with the conveyor belt (5). The belt cleaning unit (4) is installed on the conveyor frame plate (1). The output end of the drive component (6) fixedly installed on one of the conveyor frame plates (1) is connected to one of the conveyor rollers (3). Dustproof covers (7) are installed on two of the conveyor frame plates (1). Several dust suction fans (8) are arranged on the dustproof covers (7). The dust suction fans (8) are located inside the guide channel (9) fixedly installed outside the dustproof cover (7). The guide channel (9) is connected to the collection box (10) fixedly installed on one of the conveyor frame plates (1).

2. The recycled concrete aggregate conveying device as described in claim 1, characterized in that: A drive unit (6) and a collection box (10) are respectively installed on the sides of the two conveyor frame plates (1). The drive unit (6) and the collection box (10) are installed separately. The collection box (10) is filled with porous absorbent cotton. A belt cleaning unit (4) is installed below the conveyor frame plate (1).

3. The recycled concrete aggregate conveying device as described in claim 2, characterized in that: The belt cleaning unit (4) includes a cleaning cover (41), a limiting roller (42), a flushing water pipe (43), a water injection port (44), and a high-pressure nozzle (45). The cleaning cover (41) is fixedly installed below the two conveyor frame plates (1). The limiting roller (42) is rotatably installed inside the cleaning cover (41), and two flushing water pipes (43) are fixedly installed. Several high-pressure nozzles (45) are arranged on each flushing water pipe (43). The flushing water pipes (43) are all connected to the water injection port (44) installed outside the cleaning cover (41).

4. The recycled concrete aggregate conveying device as described in claim 3, characterized in that: The two flushing water pipes (43) are located on one side of the limiting roller (42). The high-pressure nozzles (45) installed on the flushing water pipes (43) can spray high-pressure water jets that can act on the surface of the conveyor belt (5). The conveyor belt (5) can form an arc-shaped surface under the action of the limiting roller (42), and the arc-shaped surface is tangent to the high-pressure water jets sprayed by the high-pressure nozzles (45).

5. A recycled concrete aggregate conveying device as described in claim 4, characterized in that: One of the flushing pipes (43) is provided with a water-absorbing cotton roller (46) on one side. The water-absorbing cotton roller (46) is rotatably installed inside the cleaning cover (41). The water-absorbing cotton of the water-absorbing cotton roller (46) is in contact with the conveyor belt (5). Water-squeezing rollers (47) are arranged around the water-absorbing cotton roller (46). The water-squeezing rollers (47) are rotatably installed inside the cleaning cover (41). The water-squeezing rollers (47) are in close contact with the water-absorbing cotton of the water-absorbing cotton roller (46) and squeeze it.

6. The recycled concrete aggregate conveying device as described in claim 5, characterized in that: The high-pressure air pipe (48) fixedly installed inside the cleaning hood (41) is located on one side of the absorbent cotton roller (46) and the squeezing roller (47). The high-pressure air pipe (48) is connected to the output end of the high-pressure pump (49) fixedly installed outside the cleaning hood (41). The high-pressure air pipe (48) is equipped with a high-pressure air nozzle, and the high-pressure air jet generated therefrom can act on the surface of the conveyor belt (5).

7. A recycled concrete aggregate conveying device as described in claim 6, characterized in that: The lowest point of the cleaning cover (41) is provided with a drain pipe (40), which is connected to the sewage tank.

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