Step-by-step material distribution type red brick content measuring device for construction waste recycled aggregate

Abstract

The utility model discloses a step-by-step distributing type red brick content measuring device for construction waste recycled aggregate, which comprises an aggregate conveying pipe, a belt conveyor, an aggregate dispersing and ironing device, a camera, a computer and a step-by-step distributing machine, an outlet of the aggregate conveying pipe is positioned above a conveying belt, and the step-by-step distributing machine comprises a base and a tank body, a plurality of material distributing partition plates are arranged in the tank body and form a plurality of material distributing inner cavities, a plurality of material leaking through holes are formed in the material distributing partition plates, a rotating main shaft driven by a material distributing motor penetrates through all the material distributing partition plates, and a material distributing push rod connected with the rotating main shaft is arranged in each material distributing inner cavity. The cavity wall of each material distribution inner cavity is provided with a material distribution outlet, the end of each material distribution outlet is provided with a discharging switch, and all the material distribution outlets are communicated with an aggregate conveying pipe. According to the utility model, the problem of inaccurate image acquisition and determination analysis caused by the fact that small-size aggregate is shielded by large-size aggregate is avoided as much as possible, and the determination accuracy of the content of the red bricks in the construction waste recycled aggregate is improved.

Description

Technical Field

[0001] The utility model relates to a red brick content measuring device, in particular to a step-by-step material separation type red brick content measuring device used for construction waste recycled aggregate. Background Art

[0002] Recycling construction waste into recycled aggregate for use in transportation and civil engineering projects can facilitate the large-scale recycling of construction waste. However, the application of recycled aggregate from construction waste in transportation and civil engineering projects requires certain strength requirements. The demolition of numerous brick-concrete buildings generates a significant amount of construction waste containing red bricks. Because red bricks are weaker in strength and stability than concrete blocks, the mechanical properties of recycled aggregate from construction waste containing a high content of red bricks are insufficient to meet the requirements of transportation and civil engineering projects.

[0003] According to existing research, a mixture containing 45% recycled aggregate from construction waste, with a brick-concrete ratio of 1:2, not only meets the regulatory requirements for the base course of second-class and lower highways, but also meets the regulatory requirements for the subbase course of expressways and first-class highways. Furthermore, the compressive strength of a mixture with a brick-concrete ratio of 1:2 is 1.3 to 1.5 times higher than that of a mixture with a brick-concrete ratio of 2:1. The smaller the brick-concrete ratio, the better the performance of the mixture. Therefore, the content of red brick aggregate in recycled aggregate from construction waste largely determines the road performance of recycled aggregate from construction waste.

[0004] However, the current solid waste treatment technology for construction waste has not yet achieved the screening function of red bricks in aggregates. Therefore, only by measuring the red brick content in the recycled aggregates of construction waste and then using this as the basis for achieving a certain brick-concrete ratio and adding an appropriate amount of concrete can the construction strength requirements be reliably met.

[0005] In traditional technology, the invention patent application with application number "202210942052.5" discloses a device for measuring the content of red bricks in recycled brick-concrete aggregates from construction waste, which is mainly composed of an aggregate conveying system, a torque adaptive adjustment system, an aggregate ironing and dispersion system, and an image acquisition and analysis system.

[0006] The above invention application has the following defects: the recycled aggregates from construction waste are directly placed on a conveyor belt without being screened and then imaged for quantitative analysis of red bricks. Large, medium, and small aggregates are mixed together, medium aggregates are blocked by large aggregates, and small aggregates are blocked by medium and large aggregates. This affects the results of image acquisition and quantitative analysis of red bricks, ultimately leading to inaccurate red brick content determination results. Utility Model Content

[0007] The purpose of the utility model is to provide a step-by-step material separation type red brick content determination device for construction waste recycled aggregate in order to solve the above problems, which has more accurate determination results.

[0008] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0009] A step-by-step material separation type red brick content determination device for construction waste recycled aggregate, comprising an aggregate conveying pipe, a belt conveyor, an aggregate dispersing and smoothing device, a camera and a computer, wherein the outlet of the aggregate conveying pipe is located above the transverse conveyor belt at one end of the belt conveyor, the aggregate dispersing and smoothing device is installed above the conveyor belt and close to the outlet of the aggregate conveying pipe, the camera is installed above the conveyor belt and located between the aggregate dispersing and smoothing device and the other end of the belt conveyor, the signal output end of the camera is connected to the signal input end of the computer, the step-by-step material separation type red brick content determination device for construction waste recycled aggregate also includes a step-by-step material separation machine, the step-by-step separation machine ... The feed machine includes a base and a tank body, the tank body is installed on the base, the top of the tank body is provided with a feed port, a plurality of horizontal dividing partitions are provided in the tank body to form a plurality of vertically arranged dividing cavities, a plurality of vertical leakage holes are provided on the dividing partitions, the leakage holes of the upper dividing partitions are larger than the leakage holes of the lower dividing partitions, a vertical rotating spindle driven by a dividing motor passes through all the dividing partitions, each of the dividing cavities is provided with a horizontal dividing push rod connected to the rotating spindle, the cavity wall of each dividing cavity is provided with a dividing outlet and a discharge switch is installed at the end of the dividing outlet, and all the dividing outlets are connected to the aggregate conveying pipe.

[0010] Preferably, in order to facilitate assembly and improve driving efficiency, the material distribution motor is installed in the base, the lower end of the rotating spindle is connected to the rotating shaft of the material distribution motor, and the rotating spindle and the tank body, and the rotating spindle and the material distribution partition are connected respectively through bearings.

[0011] Preferably, in order to realize the rocking and shaking functions of the tank body to improve the aggregate screening efficiency, the bottom of the tank body is connected to the base through a plurality of elastic support columns, and triangular cams are respectively provided on both sides of the lower side of the tank body. The triangular cams are mounted on the base through columns and can rotate freely. The rotating spindle is connected to the two triangular cams through a transmission device and can drive the triangular cams to rotate. During the rotation process, the two triangular cams can intermittently contact the bottom of the tank body to cause it to rock and shake.

[0012] Preferably, in order to drive the triangular cam to rotate by rotating the main shaft, the transmission device includes a first bevel gear, a second bevel gear and a synchronous belt. The first bevel gear is mounted on the rotating main shaft through its own through hole, and the second bevel gear is meshed with the first bevel gear. One end of the second bevel gear and one end of the triangular cam are respectively provided with a transmission wheel, and the synchronous belt is simultaneously connected to the transmission wheel of the second bevel gear and the transmission wheels of the two triangular cams.

[0013] Preferably, in order to improve the camera's picture clarity and enhance the aggregate surface texture to improve the measurement accuracy, the step-by-step red brick content measurement device for construction waste recycled aggregate also includes a line laser emitter, which is installed above the conveyor belt and located between the aggregate dispersing and ironing device and the camera.

[0014] Preferably, in order to detect the conveyor belt speed in real time for easy control, the step-by-step red brick content determination device for construction waste recycled aggregate also includes a speed sensor, which is installed next to the rotating shaft that drives the conveyor belt to rotate and is used to detect the rotation speed of the rotating shaft. The signal output end of the speed sensor is connected to the signal input end of the computer.

[0015] Preferably, in order to realize the aggregate dispersing and smoothing function, the aggregate dispersing and smoothing device includes a shell and a spiral shaft, an aggregate inlet is provided on the side of the shell close to the aggregate conveying pipe, and an aggregate outlet is provided on the side of the shell close to the camera, and the spiral shaft is placed in the shell and its two ends are respectively connected to the two ends of the shell through bearings.

[0016] Preferably, in order to improve the clarity of photographs, the camera is a light field camera, and the two side frames of the belt conveyor are respectively provided with a plurality of standard patches for cooperating with the camera.

[0017] The beneficial effects of the present invention are:

[0018] The utility model adds a step-by-step classifier to first perform multi-stage screening on the recycled aggregate from construction waste. Each photo is taken for the same batch of aggregates in the same size range, which avoids the problem of inaccurate image acquisition and measurement and analysis caused by small-sized aggregates being blocked by large-sized aggregates. The accuracy of measurement of red brick content in recycled aggregate from construction waste is improved, laying a solid foundation for adding an appropriate amount of concrete when using recycled aggregate from construction waste. It can not only reliably meet the construction strength requirements, but also reduce the amount of concrete used and reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a step-by-step material separation type red brick content determination device for construction waste recycled aggregates according to the present invention;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of the aggregate dispersing and smoothing device of the step-by-step material separation type red brick content determination device for construction waste recycled aggregates according to the present invention;

[0021] Figure 3 The utility model is a schematic side view of the structure of the spiral shaft of the aggregate dispersing and ironing device of the step-by-step material separation type red brick content determination device for construction waste recycled aggregate. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figure 1 、 Figure 2 and Figure 3 As shown, the step-by-step material distribution type red brick content determination device for construction waste recycled aggregate of the present invention includes an aggregate conveying pipe 11, a belt conveyor 4, an aggregate dispersing and smoothing device 8, a camera 3, a computer 1 and a step-by-step material distributor. The outlet of the aggregate conveying pipe 11 is located above the horizontal conveyor belt 7 at one end of the belt conveyor 4. The aggregate dispersing and smoothing device 8 is installed above the conveyor belt 7 and close to the outlet of the aggregate conveying pipe 11. The camera 3 is installed above the conveyor belt 7 and is located between the aggregate dispersing and smoothing device 8 and the other end of the belt conveyor 4. The signal output end of the camera 3 is connected to the signal input end of the computer 1. The step-by-step material distributor includes a base 23 and a tank body 15. The tank body 15 is installed on the base 23. The top of the tank body 15 is provided with a feed port 13. The tank body 15 is provided with a plurality of horizontal distribution ports. The material partitions (not marked in the figure) form a plurality of vertically arranged material distribution cavities 17, and the material distribution partitions are provided with a plurality of vertical leakage holes (not visible in the figure). The leakage holes of the upper material distribution partitions are larger than the leakage holes of the lower material distribution partitions, so that the step-by-step material distribution function is realized. The vertical rotating spindle 19 driven by the material distribution motor (not visible in the figure) passes through all the material distribution partitions, and each material distribution cavity 17 is provided with a horizontal material distribution push rod 18 connected to the rotating spindle 19. The cavity wall of each material distribution cavity 17 is provided with a material distribution outlet 12 and a discharge switch 16 is installed at the end of the material distribution outlet 12. The discharge switch 16 can be an electric switch such as a solenoid valve, or a manual switch, depending on actual needs. All material distribution outlets 12 are connected to the aggregate conveying pipe 11.

[0024] like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention also discloses the following multiple more optimized specific structures:

[0025] In order to facilitate assembly and improve driving efficiency, the material distribution motor is installed in the base 23, and the lower end of the rotating main shaft 19 is connected to the rotating shaft of the material distribution motor. The rotating main shaft 19 and the tank body 15, and the rotating main shaft 19 and the material distribution partition are connected respectively through bearings (not visible in the figure).

[0026] In order to realize the rocking and shaking functions of the tank body 15 to improve the aggregate screening efficiency, the bottom of the tank body 15 is connected to the base 23 through a plurality of elastic support columns 22 (the specific structure is determined according to actual needs and is a conventional component in the prior art). Triangular cams 21 are respectively provided on both sides of the lower side of the tank body 15. The triangular cams 21 are mounted on the base 23 through columns (not marked in the figure) and can rotate freely. The rotating main shaft 19 is connected to the two triangular cams 21 through a transmission device (a conventional reversing rotation transmission + synchronous belt transmission structure, refer to the following content for the specific structure) and can drive the triangular cams 21 to rotate. During the rotation process, the two triangular cams 21 can intermittently contact the bottom of the tank body 15 to cause it to rock and shake.

[0027] In order to drive the triangular cam 21 to rotate by rotating the main shaft 19, the transmission device includes a first bevel gear (not shown in the figure), a second bevel gear (not shown in the figure) and a synchronous belt 20. The first bevel gear is mounted on the rotating main shaft 19 through its own through hole, and the second bevel gear is meshed with the first bevel gear. One end of the second bevel gear and one end of the triangular cam 21 are respectively provided with a transmission wheel (not shown in the figure), and the synchronous belt 20 is simultaneously connected to the transmission wheel of the second bevel gear and the transmission wheels of the two triangular cams 21.

[0028] In order to improve the camera 3's picture clarity and enhance the aggregate surface texture to improve the measurement accuracy, the step-by-step material separation red brick content measurement device for construction waste recycled aggregate also includes a line laser emitter 4, which is installed above the conveyor belt 7 and located between the aggregate dispersing and smoothing device 8 and the camera 3.

[0029] In order to detect the speed of the conveyor belt 7 in real time for easy control, the step-by-step red brick content determination device for construction waste recycled aggregate also includes a speed sensor 2. The speed sensor 2 is installed next to the rotating shaft that drives the conveyor belt 7 to rotate and is used to detect the rotation speed of the rotating shaft. The signal output end of the speed sensor 2 is connected to the signal input end of the computer 1.

[0030] In order to realize the aggregate dispersing and smoothing function, the aggregate dispersing and smoothing device 8 includes a shell 82 and a spiral shaft 83. An aggregate inlet 84 is provided on the side of the shell 82 close to the aggregate conveying pipe 11, and an aggregate outlet 81 is provided on the side of the shell 82 close to the camera 3. The spiral shaft 83 is placed in the shell 82 and its two ends are respectively connected to the two ends of the shell 82 through bearings 9.

[0031] In order to improve the clarity of the photos, the camera 3 is a light field camera, and the two side frames of the belt conveyor 4 are respectively provided with multiple (6 in the figure) standard patches 6 for cooperating with the camera 3.

[0032] Figure 1 Also shown is an observation port 14 on the top of the tank body 15 , and rollers 10 are installed at the bottom of the four legs of the belt conveyor 4 , which is a conventional adaptive structure.

[0033] like Figure 1-Figure 3 As shown, when used, the construction waste recycled aggregate is fed from the feed port 13 of the tank body 15 into the uppermost distribution cavity 17 in the tank body 15. Under the rotation and pushing action of the distribution push rod 18, all aggregates whose sizes are smaller than the leakage through-hole diameter of the distribution partition at the bottom of the distribution cavity 17 fall into the distribution cavity 17 of the next layer, and large aggregates will not fall. When the corresponding discharge switch 16 is turned on, during the continuous swinging and shaking of the tank body 15, under the rotation and pushing action of the distribution push rod 18, the large aggregates fall onto the conveyor belt 7 through the distribution outlet 12 and the aggregate conveying pipe 11, and then are dispersed and flattened by the aggregate dispersing and smoothing device 8, and then are photographed multiple times by the camera 3. The computer 1 saves and processes the image information of the camera 3, and obtains the determination result of the red brick content after relevant image analysis. Aggregates of different size ranges are sent to the conveyor belt 7 in batches according to the aggregate content in the different material separation cavities 17, and photographed and analyzed in the above manner, ultimately realizing the function of determining the red brick content in batches after all aggregates are screened step by step.

[0034] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A step-by-step material separation red brick content determination device for recycled aggregate from construction waste, comprising an aggregate conveying pipe, a belt conveyor, an aggregate dispersing and smoothing device, a camera, and a computer. The outlet of the aggregate conveying pipe is located above the transverse conveyor belt at one end of the belt conveyor. The aggregate dispersing and smoothing device is mounted above the conveyor belt and near the outlet of the aggregate conveying pipe. The camera is mounted above the conveyor belt and located between the aggregate dispersing and smoothing device and the other end of the belt conveyor. The signal output of the camera is connected to the signal input of the computer. The device is characterized by: The step-by-step material separation type red brick content determination device for construction waste recycled aggregate also includes a step-by-step material separation machine, which includes a base and a tank body. The tank body is installed on the base, and a feed port is provided on the top of the tank body. A plurality of horizontal material separation partitions are provided in the tank body to form a plurality of vertically arranged material separation cavities. A plurality of vertical leakage holes are provided on the material separation partitions. The leakage hole diameter of the upper material separation partition is larger than the leakage hole diameter of the lower material separation partition. A vertical rotating main shaft driven by a material separation motor passes through all the material separation partitions. A horizontal material separation push rod connected to the rotating main shaft is provided in each of the material separation cavities. A material separation outlet is provided on the cavity wall of each material separation cavity, and a discharge switch is installed at the end of the material separation outlet. All the material separation outlets are connected to the aggregate conveying pipe.

2. The step-by-step material separation type red brick content measuring device for construction waste recycled aggregate according to claim 1 is characterized in that: The material distribution motor is installed in the base, the lower end of the rotating shaft is connected to the rotating shaft of the material distribution motor, and the rotating shaft and the tank body, and the rotating shaft and the material distribution partition are connected respectively through bearings.

3. The step-by-step material separation type red brick content measuring device for construction waste recycled aggregate according to claim 2 is characterized in that: The bottom of the tank body is connected to the base through a plurality of elastic support columns. Triangular cams are respectively provided on both sides of the lower side of the tank body. The triangular cams are mounted on the base through columns and can rotate freely. The rotating spindle is connected to the two triangular cams through a transmission device and can drive the triangular cams to rotate. During the rotation process, the two triangular cams can intermittently contact the bottom of the tank body to cause it to swing and shake.

4. The step-by-step material separation type red brick content measuring device for construction waste recycled aggregate according to claim 3 is characterized in that: The transmission device includes a first bevel gear, a second bevel gear and a synchronous belt. The first bevel gear is mounted on the rotating main shaft through its own through hole. The second bevel gear is meshed with the first bevel gear. One end of the second bevel gear and one end of the triangular cam are respectively provided with a transmission wheel. The synchronous belt is simultaneously connected to the transmission wheel of the second bevel gear and the transmission wheels of the two triangular cams.

5. The step-by-step material separation red brick content measuring device for construction waste recycled aggregate according to any one of claims 1 to 4, characterized in that: The step-by-step material separation type red brick content measuring device for construction waste recycled aggregate also includes a line laser transmitter, which is installed above the conveyor belt and located between the aggregate dispersing and smoothing device and the camera.

6. The step-by-step material separation red brick content measuring device for construction waste recycled aggregate according to any one of claims 1 to 4, characterized in that: The step-by-step red brick content determination device for construction waste recycled aggregate also includes a speed sensor, which is installed next to the rotating shaft that drives the conveyor belt to rotate and is used to detect the rotation speed of the rotating shaft. The signal output end of the speed sensor is connected to the signal input end of the computer.

7. The step-by-step material separation red brick content measuring device for construction waste recycled aggregate according to any one of claims 1 to 4, characterized in that: The aggregate dispersing and ironing device includes a shell and a spiral shaft. An aggregate inlet is provided on the side of the shell close to the aggregate conveying pipe, and an aggregate outlet is provided on the side of the shell close to the camera. The spiral shaft is placed in the shell and its two ends are respectively connected to the two ends of the shell through bearings.

8. The step-by-step material separation red brick content measuring device for construction waste recycled aggregate according to any one of claims 1 to 4, characterized in that: The camera is a light field camera, and the two side frames of the belt conveyor are respectively provided with a plurality of standard patches for cooperating with the camera.

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