An automatic angle adjustment system for pneumatic sorting nozzles

Abstract

The present invention discloses an automatic angle adjustment system for pneumatic sorting nozzles, which is a part of a sorting device, and includes a frame, an air blowing device, a rotating shaft mounted on the frame in a rotatable manner, and a rotating motor for driving the rotating shaft to rotate. The air blowing device includes an air blowing seat, an air pump, and a plurality of nozzles. The air blowing seat is connected to the rotating shaft in a transmission manner, and each nozzle is mounted on the air blowing seat. The air inlet end of each nozzle is connected to the air outlet end of the air pump through an air pipe, and each air pipe is respectively installed with a solenoid valve for controlling the on-off of the air pump and the corresponding nozzle; the sorting device includes an industrial computer for adjusting the rotation angle of the air blowing seat and the blowing time of the nozzle according to the size of the material, the position coordinates of the collection box corresponding to the material, and the angle position of the current air blowing seat. The present invention has two actions of jetting and rotating. The rotating motor can drive the air blowing seat to rotate to adjust the air blowing angle of the nozzle to adapt to the sorting of different types of materials and improve the sorting accuracy.

Description

Technical Field

[0001] The invention relates to the field of pneumatic sorting, and more particularly to an automatic angle adjustment system for a pneumatic sorting nozzle. Background Art

[0002] Construction waste refers to solid waste generated during the construction process or the maintenance and demolition of old buildings, including soil, stones, concrete blocks, broken bricks, wood, metal, pipes, electrical appliances and other materials. At present, the sorting of construction waste is usually done by manual sorting, picking sorting and pneumatic sorting. With the continuous improvement of the degree of automation, picking sorting and pneumatic sorting have gradually replaced manual sorting. In particular, pneumatic technology has developed rapidly in recent years with the rapid development of the pneumatic industry. Pneumatic technology has been widely used in various industries.

[0003] At present, there are many kinds of pneumatic sorting systems, but the air jets of pneumatic sorting systems are fixed, that is, the air blowing direction of the air blowing device in the pneumatic sorting system is fixed, and only the air blowing intensity can be changed. The air blowing angle has a great influence on the air blowing distance of the material, resulting in reduced sorting accuracy and increased subsequent manual sorting costs. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic angle adjustment system for a pneumatic sorting nozzle, which can adjust the air blowing angle of an air blowing device to adapt to different sorting environments and improve the sorting accuracy.

[0005] To achieve the above object, the solution of the present invention is:

[0006] An automatic angle adjustment system for a pneumatic sorting nozzle, which is a part of a sorting device, the sorting device comprises a conveyor belt and a collection box installed on the rear side of the conveyor belt, the automatic angle adjustment system comprises a frame, an air blowing device, a rotating shaft installed on the frame in a rotatable manner, and a rotating motor for driving the rotating shaft to rotate, the air blowing device comprises an air blowing seat, an air pump and a plurality of nozzles, the air blowing seat is drivingly connected to the rotating shaft, each of the nozzles is installed on the air blowing seat, the air inlet end of each nozzle is connected to the air outlet end of the air pump through an air pipe, and each of the air pipes is respectively installed with an electromagnetic valve for controlling the on-off of the air pump and the corresponding nozzle;

[0007] The sorting device also includes an industrial computer for adjusting the rotation angle of the air blowing seat and the blowing time of the nozzle according to the size of the material to be sorted, the position coordinates of the collection box corresponding to the material to be sorted, and the current angular position of the air blowing seat. Each of the solenoid valves is electrically connected to the output end of the industrial computer, and the driving end of the air pump is electrically connected to the output end of the industrial computer.

[0008] The air blowing seat comprises a nozzle section and two mounting sections, the two mounting sections are respectively mounted on the nozzle section, and the nozzle section and the two mounting sections are in an N shape as a whole.

[0009] Both ends of the rotating shaft are rotatably mounted at the mounting section, and a rotating gear is provided on the outer sleeve of the first end of the rotating shaft, and a motor gear is provided on the outer sleeve of the output shaft of the rotating motor, and the rotating gear and the motor gear are meshed with each other.

[0010] Each of the nozzles is mounted on the nozzle section, and each of the nozzles is sequentially arranged along the length direction of the nozzle section.

[0011] A rotary encoder for detecting the rotation angle and rotation position of the air blowing seat is installed on the rotary motor, and the output end of the rotary encoder is electrically connected to the input end of the industrial computer.

[0012] The industrial computer is provided with a storage unit with three material quantity ranges preset to match the speed of the conveyor belt respectively.

[0013] A limit switch is arranged at the rear end of the conveyor belt, and the limit switch is located on the rotation path of the air blowing seat.

[0014] After adopting the above structure, the present invention has the following beneficial effects: the setting of the air blowing device has two actions of jetting and rotation. After the rotating motor obtains the control signal, the rotating motor drives the air blowing seat to rotate counterclockwise or clockwise, and adjusts the air blowing angle of the nozzle to adapt to the sorting of different types of materials and improve the sorting accuracy. In addition, the connection setting between the air pump and each nozzle and the industrial controller adjusts the air pressure of each nozzle to perform precise pneumatic sorting on the materials to be sorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a material sorting device including an automatic angle adjustment system;

[0016] Figure 2 It is a structural schematic diagram of the automatic angle adjustment system;

[0017] Figure 3 It is a circuit block diagram of the present invention.

[0018] In the figure:

[0019] 11-Industrial camera; 12-Conveyor belt;

[0020] 13-collection box; 20-post;

[0021] 30-rotating shaft; 31-rotating gear;

[0022] 32-coupling; 33-universal bearing with seat;

[0023] 41-air blowing seat; 411-nozzle section;

[0024] 412-installation section; 42-air pump;

[0025] 43-nozzle; 50-rotating motor;

[0026] 51-motor gear; 52-rotary encoder;

[0027] 60-Limit switch. DETAILED DESCRIPTION

[0028] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0029] The invention discloses an automatic angle adjustment system for a pneumatic sorting nozzle, which is installed below a conveying device for building materials and is a part of an existing sorting device. The mixed materials may be bricks, plastics, concrete blocks and / or cardboard.

[0030] like Figure 1 As shown, the sorting device includes a conventional conveying device, a detection device, an industrial computer and a collection box 13. The detection device includes an industrial camera 11 and a detection encoder. The conveying device includes a conveyor belt 12, which is used to convey materials. The conveying direction of the conveyor belt 12 is from front to back. The conveyor belt 12 is connected to the detection encoder in a conventional manner. The detection encoder is used to detect the speed of the conveyor belt 12. The industrial camera 11 is mounted above the conveyor belt 12, and the camera head of the industrial camera 11 faces the belt surface of the conveyor belt 12. The section of the belt surface of the conveyor belt 12 photographed by the industrial camera 11 is the working section.

[0031] The collecting box 13 is placed behind the conveyor belt 12, and the collecting boxes 13 are arranged in sequence along the front-to-back direction. If the mixed materials are concrete blocks and bricks, there are two collecting boxes 13, corresponding to collecting box 1 and collecting box 2, respectively. The collecting box 1 is located in front of the collecting box 2, and the collecting box 1 is located at the landing position of the free fall of the concrete block when the conveyor belt 12 is conveyed. The collecting box 2 is used to collect bricks. In this embodiment, the position coordinates of the collecting box 2 and the characteristic information of the materials to be sorted corresponding to the collecting box 2 are preset in the industrial computer. The characteristic information of the materials to be sorted can be size, texture, edge, grayscale and / or corner point, etc., so as to determine the type of the corresponding material in the mixed materials on the conveyor belt 12 through the characteristic information of the materials to be sorted.

[0032] The driving end of the motor of the conveying device is electrically connected to the output end of the industrial computer so that the opening and closing of the conveying device can be controlled by the industrial computer. The output end of the detection encoder is connected to the input end of the industrial computer so that the detection encoder transmits the collected data to the industrial computer. The output end of the industrial camera 11 is connected to the input end of the industrial computer. The industrial computer receives the pictures taken by the industrial camera 11 and processes the transmitted pictures. Specifically, the industrial computer has an image processing unit. The image processing unit processes and calculates the transmitted pictures to obtain the characteristic information of the mixed materials, the position coordinates of each material to be sorted, and the number of materials to be sorted in the working section of the conveyor belt 12. Among them, this method of processing the picture by the image processing unit to obtain the characteristic information of the mixed materials, the position coordinates of the materials to be sorted, and the number of materials to be sorted is a conventional and well-known technology in the sorting device.

[0033] In the present invention, the industrial computer mentioned above is an existing conventional industrial computer with image processing function, such as the Advantech industrial computer with model IPC-510.

[0034] In the present invention, the automatic angle adjustment system is installed below the rear end of the conveyor belt 12 and is located at the front side of each collecting box 13 .

[0035] like Figure 1-3 As shown, the automatic angle adjustment system includes a frame 20, an air blowing device, a rotating shaft 30 and a rotating motor 50; the rotating shaft 30 is mounted on the frame 20 in a rotatable manner, the rotating motor 50 is used to drive the rotating shaft 30 to rotate, the air blowing device includes an air blowing seat 41, an air pump 42 and a plurality of nozzles 43, the air blowing seat 41 is in transmission connection with the rotating shaft 30, each nozzle 43 is mounted on the air blowing seat 41, and the air inlet end of each nozzle 43 is connected to the air outlet end of the air pump 42 through an air pipe, each air pipe is respectively installed with a solenoid valve, each solenoid valve is used to control the on-off between the air pump 42 and the corresponding nozzle 43, and the air pump 42 is installed below the conveyor belt 12. Among them, the position coordinates of each nozzle 43 are preset in the above-mentioned industrial computer.

[0036] The driving end of the air pump 42 is connected to the output end of the industrial computer, and the control end of each solenoid valve is connected to the output end of the industrial computer, so as to control the on and off of a single solenoid valve or multiple solenoid valves through the industrial computer, so as to connect or disconnect the air pump 42 and the corresponding nozzle 43. The industrial computer is also used to adjust the rotation angle of the air blowing seat 41 and the blowing time of the nozzle 43 according to the size of the material to be sorted, the position coordinates of the collection box 2 corresponding to the material to be sorted, and the current angular position of the air blowing seat 41.

[0037] Specifically, the air blowing seat 41 includes a nozzle section 411 and two mounting sections 412. The two mounting sections 412 are respectively mounted on the corresponding ends of the nozzle section 411, and the nozzle section 411 and the two mounting sections 412 are in an N shape as a whole. The nozzle section 411 is arranged below the rear end of the conveyor belt 12 in a manner that its length direction is arranged along the width direction of the conveyor belt 12, and each nozzle 43 is mounted on the nozzle section 411, and each nozzle 43 is sequentially arranged along the length direction of the nozzle section 411. Among them, the above-mentioned collection box 13 is located within the spraying range of each nozzle 43, and the materials dropped from the conveyor belt 12 are located within the spraying range of the corresponding nozzle 43.

[0038] The two ends of the rotating shaft 30 correspond to the two mounting sections 412 one by one, and the two ends of the rotating shaft 30 are respectively mounted on the corresponding mounting sections 412 in a rotatable manner. The mounting structure of the rotating shaft 30 and the mounting section 412 is a conventional structure. For example, the two ends of the rotating shaft 30 are respectively mounted on the corresponding mounting sections 412 through couplings 32. A rotating gear 31 is tightly sleeved on the first end of the rotating shaft 30, and the first end is the end close to the collecting box. A motor gear 51 is tightly sleeved on the output shaft of the rotating motor 50, and the rotating gear 31 and the motor gear 51 are meshed with each other.

[0039] Two universal bearings 33 with seats are installed on the rotating shaft 30. The universal bearings 33 with seats include a bearing seat and a bearing installed in the bearing seat. The bearing seat is installed on the frame, and the rotating shaft 30 is installed in the bearing. The two ends of the rotating shaft 30 are installed according to the above structure, so that the rotating shaft 30 can be rotatably installed on the frame 20. Preferably, the frame 20 includes two oppositely arranged columns, and the two columns 20 are arranged in the axial direction of the rotating shaft 30 in turn. Two bearings 33 with seats are installed on the rotating shaft 30. The two bearing seats are respectively matched with the two columns one by one. The two bearing seats are respectively installed on the corresponding columns, and the rotating shaft 30 is penetrated in the two bearings to further firmly support the rotating shaft 30 and prevent it from shaking.

[0040] The rotation process of the air blowing device is as follows: the rotation of the rotating motor 50 drives the motor gear 51 to rotate. Since the motor gear 52 and the rotating gear 31 are meshed with each other, the rotation of the motor gear 52 drives the rotating gear 31 to rotate, so that the rotating shaft 30 rotates following the rotating gear 31, thereby driving the air blowing seat 41 to rotate, and then causing each nozzle 43 to rotate, thereby realizing the change of the position angle of each nozzle 43, that is, changing the angle of each nozzle 43 relative to the opening surface of the collecting box 2.

[0041] Furthermore, a rotary encoder 52 is conventionally mounted on the rotating motor 50. The rotary encoder 52 is a conventionally known rotary encoder, and is used to detect the rotation angle and rotation position of the air blowing seat 41. The output end of the rotary encoder 52 is connected to the input end of the industrial computer, and the data detected by the rotary encoder 52 is transmitted to the industrial computer.

[0042] In the present invention, the speed of the conveyor belt 12 is divided into slow, medium and fast, with the slow speed of the conveyor belt 12 being 0.2 m / s, the medium speed being 0.6 m / s and the fast speed being 1 m / s. The speed of the conveyor belt 12 can be manually set according to the actual sorting materials.

[0043] The industrial computer has a storage unit with three preset material quantity ranges, which correspond to the first quantity range, the second quantity range and the third quantity range respectively. The first quantity range is 0-19, the second quantity range is 20-50, and the third quantity range is above 50. When the industrial computer processes the image taken by the industrial camera 11 and obtains the number of materials to be sorted on the working section of the conveyor belt 12, the industrial computer matches the number of materials to be sorted on the current working section with the three material quantity ranges. The matching results are as follows:

[0044] 1. If the number of mixed materials in the current working section is within the first quantity range, the industrial computer controls the speed of the conveyor belt 12 to switch to fast;

[0045] 2. If the number of mixed materials in the current working section is within the second quantity range, the industrial computer controls the speed of the conveyor belt 12 to switch to medium speed;

[0046] 3. If the number of mixed materials in the current working section is within the third quantity range, the industrial computer controls the speed of the conveyor belt 12 to switch to a slow speed.

[0047] Furthermore, a limit switch 60 is installed at the rear side of the conveying frame of the conveying device, the trigger end of the limit switch 60 faces the rear side, and the limit switch 60 is located on the rotation path of the nozzle section 411 of the air blowing seat 41. When the air blowing seat 41 rotates more than 90 degrees, the air blowing seat 41 touches the trigger end of the limit switch 60, so that the limit switch 60 is actuated and the switch signal is transmitted to the industrial computer. After receiving the switch signal of the limit switch 60, the industrial computer controls the rotating motor 50 to stop rotating or reset the rotating motor 50, thereby limiting the rotation of the air blowing seat 41 and playing a protective role.

[0048] In the present invention, the working process of the sorting device is that when the conveyor belt 12 conveys the mixed material, the industrial camera shoots the working section of the conveyor belt 12 in real time, and transmits the shot image to the industrial computer. The industrial computer processes the image shot by the industrial camera to obtain the characteristic information of the mixed material on the working section, and compares the characteristic information of each material with the preset characteristic information therein to obtain the number, size and position information of the materials to be sorted in the mixed material on the current working section at the time of shooting. Then the industrial computer adjusts the speed of the conveyor belt 12 according to the number of materials to be sorted on the working section. At the same time, the industrial computer determines the type of materials to be sorted according to the characteristic information of the materials to be sorted. Then the industrial computer combines the speed of the conveyor belt to calculate the position where the materials to be sorted are sprayed, and matches the nozzle 43 at the corresponding position. When the material falls, the industrial computer controls the angle to automatically adjust the system action.

[0049] The working process of the present invention is as follows: the industrial computer controls the solenoid valve on the nozzle 43 to open according to the nozzle 43 that matches the fallen material to be sorted. At the same time, the industrial computer adjusts the rotation angle of the air blowing seat 41 and the air blowing time of the corresponding nozzle according to the angular position of the current air blowing seat 41, the position coordinates of the collecting box 2 corresponding to the type of the material to be sorted, the unit mass corresponding to the type of the material to be sorted, and the size of the material to be sorted. In this process, the industrial computer obtains the switch state of the limit switch 60 in real time. If the switch signal of the limit switch 60 is obtained, the rotating motor 50 is controlled to stop working.

[0050] In the present invention, the adjustment principle of the automatic angle adjustment system is that the larger the particle size of the same material to be sorted, that is, the heavier it is, the larger the angle of the nozzle 43 relative to the horizontal plane is, and the spraying time is correspondingly prolonged. In addition, combined with the position coordinates of the collection box 13, the angle position and spraying time of the nozzle 43 are appropriately adjusted.

[0051] Taking concrete blocks and bricks as an example, the relationship between the size of the materials and the angle of the nozzle 43 is as follows.

[0052] When the particle size of the bricks is 2-4 cm, the nozzle section 411 of the air blowing seat 41 is 30° relative to the horizontal plane, that is, each nozzle 43 is 30° relative to the horizontal plane;

[0053] When the particle size of the bricks is 5-6 cm, the nozzle section 411 of the air blowing seat 41 is 50° relative to the horizontal plane, that is, each nozzle 43 is 50° relative to the horizontal plane.

[0054] In this way, the mixed material conveyed to the rear end by the conveyor belt 12, under the conveyance of the conveyor belt 12, the concrete blocks directly fall into the collecting box 1, and the bricks are sprayed into the collecting box 2 by the corresponding nozzles 43 according to the above-mentioned angle relationship.

[0055] It should be noted that the air pressure of the nozzle 43 is generally selected from an industrial standard air source, and the pressure is maintained by a gas tank, and the pressure is generally not adjusted, and is generally 0.55-0.8 MPa.

[0056] The above-mentioned particle size refers to the minimum circular diameter that can wrap the concrete blocks to be sorted.

[0057] Among the construction waste, other larger materials such as wood and steel bars are generally sorted out, and the remaining concrete blocks and bricks are crushed and screened, so that the particle size of the waste is relatively fixed, generally 2-6cm.

[0058] In the present invention, the relationship between the particle size of the material to be sorted and the angle of the nozzle, as well as the spraying time of the nozzle can be obtained through a large number of experiments, so they will not be described in detail.

[0059] After the industrial computer determines the type and size of the material to be sorted, it adjusts the angle of the current air blowing seat 41 according to the position information of the current air blowing seat 41 relative to the horizontal plane, and then controls the air pressure of the corresponding nozzle 43 according to the position coordinates of the corresponding collection box 13 so that the material to be sorted can be blown into the corresponding collection box 13.

[0060] The above description is only a preferred embodiment of the present embodiment, and all equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. An automatic angle adjustment system for a pneumatic sorting nozzle, which is a part of a sorting device, the sorting device comprising a conveyor belt and a collection box mounted on the rear side of the conveyor belt, characterized in that: The automatic angle adjustment system includes a frame, an air blowing device, a rotating shaft rotatably mounted on the frame, and a rotating motor for driving the rotating shaft to rotate, the air blowing device includes an air blowing seat, an air pump and a plurality of nozzles, the air blowing seat is transmission-connected to the rotating shaft, each of the nozzles is mounted on the air blowing seat, the air inlet end of each nozzle is connected to the air outlet end of the air pump through an air pipe, and each of the air pipes is respectively installed with an electromagnetic valve for controlling the on-off of the air pump and the corresponding nozzle; the sorting device also includes an industrial computer for adjusting the rotation angle of the air blowing seat and the blowing time of the nozzle according to the size of the material to be sorted, the position coordinates of the collection box corresponding to the material to be sorted, and the current angular position of the air blowing seat, each of the electromagnetic valves is electrically connected to the output end of the industrial computer, and the driving end of the air pump is electrically connected to the output end of the industrial computer; The automatic angle adjustment method is as follows: the industrial computer matches the nozzle according to the fallen material to be sorted, controls the solenoid valve on the nozzle to open, and at the same time, the industrial computer adjusts the rotation angle of the air blowing seat and the air blowing time of the corresponding nozzle according to the angle position of the current air blowing seat, the position coordinates of the collecting box corresponding to the type of the material to be sorted, the unit mass corresponding to the type of the material to be sorted, and the size of the material to be sorted; wherein, the larger the particle size of the same material to be sorted, the larger the angle of the nozzle relative to the horizontal plane, and the spraying time is correspondingly extended.

2. The automatic angle adjustment system for a pneumatic sorting nozzle according to claim 1, characterized in that: The air blowing seat comprises a nozzle section and two mounting sections, the two mounting sections are respectively mounted on the nozzle section, and the nozzle section and the two mounting sections are in an N shape as a whole.

3. The automatic angle adjustment system for a pneumatic sorting nozzle according to claim 2, characterized in that: Both ends of the rotating shaft are rotatably mounted at the mounting section, and a rotating gear is provided on the outer sleeve of the first end of the rotating shaft, and a motor gear is provided on the outer sleeve of the output shaft of the rotating motor, and the rotating gear and the motor gear are meshed with each other.

4. The automatic angle adjustment system for a pneumatic sorting nozzle according to claim 1, characterized in that: Each of the nozzles is installed on the nozzle section, and each of the nozzles is arranged in sequence along the length direction of the nozzle section.

5. The automatic angle adjustment system for a pneumatic sorting nozzle according to claim 1, characterized in that: A rotary encoder for detecting the rotation angle and rotation position of the air blowing seat is installed on the rotary motor, and the output end of the rotary encoder is electrically connected to the input end of the industrial computer.

6. The automatic angle adjustment system for pneumatic sorting nozzles according to claim 1, characterized in that: The industrial computer is provided with a storage unit with three material quantity ranges preset to match the speed of the conveyor belt respectively.

7. The automatic angle adjustment system for pneumatic sorting nozzles according to claim 1, characterized in that: A limit switch is arranged at the rear end of the conveyor belt, and the limit switch is located on the rotation path of the air blowing seat.

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