Purging system for strip steel surface quality detection system

Abstract

The utility model relates to a purging system for a strip steel surface quality detection system, and belongs to the technical field of cold-rolled strip steel production equipment in the metallurgical industry. According to the technical scheme, the tail end of a compressed air main pipe is communicated with a transverse pipe (5), and a nozzle (6) is installed on a supporting rod (7); the air blower (13) and the box-type filter (14) are arranged in the air purification chamber (12), an air outlet (17) of the air purification chamber is connected with the sensor chamber and the light source chamber through a pipeline, and the pressure sensors (15) are respectively arranged on the inner walls of the sensor chamber (11) and the light source chamber (10). The utility model has the beneficial effects of effectively preventing impurities such as oil gas, dust and the like from polluting the window, ensuring clear imaging, radiating the camera and light source equipment, ensuring stable operation of the equipment and prolonging the service life of the equipment.

Description

Technical Field

[0001] The utility model relates to a purging system for a strip steel surface quality detection system, belonging to the technical field of cold-rolled strip steel production equipment in the metallurgical industry. Background Art

[0002] The strip surface quality inspection system is a key equipment to ensure the surface quality of the strip. It is generally arranged in the exit area of ​​the production line to detect surface defects of the strip so that quality inspectors can grade the surface quality of the strip. Its working principle is based on visual recognition technology. The upper and lower surfaces of the running strip are continuously scanned and photographed by a high-speed camera to form a clear surface image of the strip. Then, the image is analyzed by a certain algorithm through the processing unit, and the defects are extracted. Finally, the defect category is obtained through the decision classification algorithm and presented through the computer system (including defect category, location, size and other information). A clear strip surface image is a prerequisite for ensuring the efficient operation of the strip surface quality inspection system. The traditional design is to place detection elements such as cameras in the sensor room, and the corresponding light source equipment is placed in the light source room. The sensor room and the light source room are equipped with windows with glass to protect the equipment from contamination by impurities such as oil, gas, dust, etc. on site. Since there is no corresponding purge device, maintenance personnel are required to wipe the windows of the sensor room and the light source room regularly to ensure the detection effect. This design has the following problems: First, the surface quality inspection system is an online device, arranged above and below the strip, and cannot be wiped during production line operation, which affects the inspection effect over time; second, the equipment is located in a relatively closed space, and equipment heat dissipation in summer becomes a hidden danger to the stable operation of the system. Utility Model Content

[0003] The utility model aims to provide a purging system for a strip steel surface quality detection system. By periodically purging the windows of the sensor chamber and the light source chamber, and controlling the micro-positive pressure in the sensor chamber and the light source chamber, it can effectively prevent impurities such as oil, gas, and dust from contaminating the windows, ensure clear imaging, and dissipate heat for the camera and light source equipment, thereby ensuring stable operation of the equipment and extending the service life of the equipment, thereby solving the above-mentioned problems existing in the background technology.

[0004] The technical scheme of the utility model is: a purge system for a strip surface quality detection system, comprising a window purge system and an indoor purge system, the window purge system comprising a compressed air main pipe and two branches, the compressed air main pipe is arranged with a compressed air flow control valve, a filter, a solenoid valve and a bypass hand valve, and the two branches are respectively arranged with a transverse pipe, a support rod, an air guide pipe and a nozzle; the end of the compressed air main pipe is connected with the transverse pipe, the nozzle is installed on the support rod, matched with the position of the light source chamber and the sensor chamber, and the transverse pipe is connected with the nozzle through the air guide pipe;

[0005] The indoor purge system includes a clean air chamber, a blower, a box filter and a pressure sensor. The blower and the box filter are arranged in the clean air chamber, the box filter is arranged on the air inlet side of the clean air chamber, the blower is arranged in the middle of the clean air chamber, and the air outlet of the clean air chamber is connected to the sensor room and the light source room through a pipeline. The pressure sensors are respectively installed on the inner walls of the sensor room and the light source room.

[0006] The nozzle is set at an oblique blowing angle to the windows of the light source chamber and the sensor chamber. The nozzle blowing range above the light source chamber fully covers the entire window of the light source chamber, and the nozzle position above the sensor chamber matches the camera window on the sensor chamber.

[0007] The compressed air flow control valve, filter, solenoid valve and bypass hand valve are connected to the compressed air main pipe by threaded connection.

[0008] The end of the compressed air main pipe is connected to the middle position of the cross pipe by welding, the cross pipe and the nozzle are provided with quick connectors, and the air guide pipe is a plastic hose.

[0009] An adjusting handle is arranged at one end of the support rod, and a bolt hole is dug on the side surface of the support rod, and the nozzle is fixed through the bolt hole.

[0010] It also includes a blower slot and a box filter chute, which are arranged in the clean air chamber, the blower is installed in the blower slot, and the box filter is installed in the box filter chute.

[0011] One side of the air inlet of the clean air chamber is a square opening, and the air outlet of the clean air chamber is a circular opening.

[0012] A known control system is also provided, which is respectively connected to the solenoid valve and the pressure sensor.

[0013] The beneficial effects of the utility model are as follows: by periodically purging the windows of the sensor chamber and the light source chamber, and controlling the micro-positive pressure in the sensor chamber and the light source chamber, impurities such as oil, gas, and dust can be effectively prevented from contaminating the windows, ensuring clear imaging, and dissipating heat for the camera and light source equipment, ensuring stable operation of the equipment and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the blowing direction of the nozzle of the utility model;

[0016] Figure 3 It is a front view of the support rod of the utility model;

[0017] Figure 4 It is a side view of the support rod of the utility model;

[0018] Figure 5 This is the front view of the clean air chamber of the utility model;

[0019] Figure 6 It is a side view of the clean air chamber of the utility model;

[0020] In the figure: compressed air flow control valve 1, filter 2, solenoid valve 3, bypass hand valve 4, cross pipe 5, nozzle 6, support rod 7, adjustment handle 8, air guide pipe 9, light source chamber 10, sensor chamber 11, clean air chamber 12, blower 13, box filter 14, pressure sensor 15, control system 16, clean air chamber air outlet 17, blower slot 18, box filter chute 19. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the implementation cases of the utility model clearer, the technical solution in the implementation cases of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the utility model, rather than all the implementation cases. Based on the implementation cases in the utility model, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.

[0022] A purge system for a strip steel surface quality detection system comprises a window purge system and an indoor purge system, wherein the window purge system comprises a compressed air main pipe and two branches, wherein a compressed air flow control valve 1, a filter 2, a solenoid valve 3 and a bypass hand valve 4 are arranged on the compressed air main pipe, and a transverse pipe 5, a support rod 7, an air guide pipe 9 and a nozzle 6 are arranged on the two branches respectively; the end of the compressed air main pipe is connected to the transverse pipe 5, the nozzle 6 is installed on the support rod 7, and matches the position of the light source chamber 10 and the sensor chamber 11, and the transverse pipe 5 is connected to the nozzle 6 through the air guide pipe 9;

[0023] The indoor purge system includes a clean air chamber 12, a blower 13, a box filter 14 and a pressure sensor 15. The blower 13 and the box filter 14 are arranged in the clean air chamber 12. The box filter 14 is arranged on the air inlet side of the clean air chamber 12. The blower 13 is arranged in the middle of the clean air chamber 12. The clean air chamber air outlet 17 is connected to the sensor room and the light source room through a pipeline. The pressure sensor 15 is respectively installed on the inner walls of the sensor room 11 and the light source room 10.

[0024] The nozzle 6 is set at an oblique blowing angle to the windows of the light source chamber 10 and the sensor chamber 11. The blowing range of the nozzle 6 above the light source chamber 10 fully covers the entire window of the light source chamber 10, and the position of the nozzle 6 above the sensor chamber 11 matches the camera window on the sensor chamber 11.

[0025] The compressed air flow control valve 1, the filter 2, the solenoid valve 3 and the bypass hand valve 4 are connected to the compressed air main pipe by threaded connection.

[0026] The end of the compressed air main pipe is connected to the middle position of the cross pipe 5 by welding. The cross pipe 5 and the nozzle 6 are provided with quick connectors. The air guide pipe 9 is a plastic hose.

[0027] An adjusting handle 8 is provided at one end of the support rod 7 , and bolt holes are dug on the side of the support rod 7 , through which the nozzle 6 is fixed.

[0028] It also includes a blower slot 18 and a box filter chute 19 , which are arranged in the clean air chamber 12 , the blower 13 is installed in the blower slot 18 , and the box filter 14 is installed in the box filter chute 19 .

[0029] One side of the air inlet of the clean air chamber 12 is a square opening, and the air outlet 17 of the clean air chamber is a circular opening.

[0030] The control system 16 is connected to the solenoid valve 3 and the pressure sensor 15 respectively.

[0031] In actual application, in the window purge system, the compressed air flow control valve 1, the filter 2, the solenoid valve 3, and the bypass hand valve 4 are connected to the compressed air main pipe by threaded connection. The filter 2 is used to filter the compressed air, remove impurities, ensure the quality of the purge air, and avoid damage to the window glass; the bypass hand valve 4 is used for maintenance and is connected in parallel with the solenoid valve 3; the cross pipe 5, the air guide pipe 9 and the nozzle 6 are arranged on each branch, and the end of the compressed air main pipe is connected to the middle position of the cross pipe 5 by welding to ensure the balance of air pressure at all nozzles 6; the cross pipe 5 and the nozzle 6 are connected by the air guide pipe 9, and the cross pipe 5 and the nozzle 6 are provided with quick connectors. The air guide pipe 9 adopts a plastic hose to facilitate the disassembly and position adjustment of the nozzle.

[0032] The nozzle 6 forms an oblique blowing angle a with the windows of the light source chamber 10 and the sensor chamber 11 to ensure the purging effect. The blowing range of the nozzle 6 above the light source chamber 10 fully covers the entire window of the light source chamber 10 , and the position of the nozzle 6 above the sensor chamber 11 is adapted to the camera window on the sensor chamber 11 .

[0033] One end of the support rod 7 is provided with an adjustment handle 8 for adjusting the nozzle spray angle. A bolt hole is dug on the side of the support rod 7 for fixing the nozzle 6.

[0034] In the indoor purge system, the blower 13 is installed in the blower slot 18 in the clean air chamber 12, which is convenient for the maintenance of the blower 13; the box filter 14 is installed in the box filter slide 19 in the clean air chamber 12, which is convenient for the replacement of the box filter 14; the pressure sensor 15 is respectively installed on the inner walls of the light source chamber 10 and the sensor chamber 11 to measure the indoor pressure of the light source chamber 10 and the sensor chamber 11.

[0035] The outside air is sucked into the clean air chamber 12 by the blower 13, and after dust removal by the box filter 14, it flows out of the clean air chamber 12 through the clean air chamber outlet 17 under the action of the blower 13, and then enters the light source chamber 10 and the sensor chamber 11 from one side through two pipelines respectively, and then flows out from the narrow gap on the other side of the light source chamber 10 and the sensor chamber 11.

[0036] The workflow of this utility model is:

[0037] 1) Window purge system working process:

[0038] During the installation and debugging stage, first use the adjustment handle 8 to adjust the purge angle of the nozzle 6 and the plane where the windows of the light source chamber 10 and the sensor chamber 11 are located, so that the purge gas blows to the window at a certain oblique angle a to ensure the purge effect, and then adjust the compressed air flow control valve 1 to obtain a sufficient amount of purge gas; during the use stage, the control system 16 opens the solenoid valve 3 according to the set time t to periodically purge the window, which can save the use of compressed air while ensuring the quality of purge; during the maintenance stage, the bypass hand valve 4 can be opened to use compressed air to inspect and maintain the nozzle.

[0039] 2) Indoor purge system workflow:

[0040] The pressure sensor 15 installed on the side walls of the light source room 10 and the sensor room 11 uploads the indoor pressure to the control system 16 in real time. The control system 16 controls the rotation speed of the blower 13 according to the smaller value of the two pressure values, thereby controlling the purge gas flow rate to ensure a slight positive pressure in the room to achieve the purpose of purging and cooling.

[0041] The outside air is sucked into the clean air chamber 12 by the blower 13, filtered by the box filter 14 and then flows out through the clean air chamber outlet 17, and then divided into two branches to enter from one side of the light source chamber 10 and the sensor chamber 11 respectively, and then flows out from the narrow gap on the other side of the light source chamber 10 and the sensor chamber 11, thereby achieving the cooling effect on the equipment.

Claims

1. A purge system for a strip steel surface quality detection system, characterized in that: The invention comprises a window purge system and an indoor purge system. The window purge system comprises a compressed air main pipe and two branches. The compressed air main pipe is provided with a compressed air flow control valve (1), a filter (2), a solenoid valve (3) and a bypass hand valve (4). The two branches are provided with a transverse pipe (5), a support rod (7), an air guide pipe (9) and a nozzle (6). The end of the compressed air main pipe is connected to the transverse pipe (5). The nozzle (6) is installed on the support rod (7) and matches the position of the light source chamber (10) and the sensor chamber (11). The transverse pipe (5) is connected to the nozzle (6) through the air guide pipe (9). The indoor purge system comprises a clean air chamber (12), a blower (13), a box filter (14) and a pressure sensor (15). The blower (13) and the box filter (14) are arranged in the clean air chamber (12), the box filter (14) is arranged on the air inlet side of the clean air chamber (12), the blower (13) is arranged in the middle of the clean air chamber (12), the clean air chamber air outlet (17) is connected to the sensor chamber and the light source chamber through a pipeline, and the pressure sensor (15) is respectively installed on the inner wall of the sensor chamber (11) and the light source chamber (10).

2. The purging system for a strip steel surface quality detection system according to claim 1, characterized in that: The nozzle (6) is arranged at an oblique blowing angle to the windows of the light source chamber (10) and the sensor chamber (11); the blowing range of the nozzle (6) above the light source chamber (10) fully covers the window of the entire light source chamber (10); and the position of the nozzle (6) above the sensor chamber (11) matches the camera window on the sensor chamber (11).

3. The purging system for a strip steel surface quality detection system according to claim 1, characterized in that: The compressed air flow control valve (1), the filter (2), the solenoid valve (3) and the bypass hand valve (4) are connected to the compressed air main pipe by means of threaded connection.

4. The purging system for a strip steel surface quality detection system according to claim 1, characterized in that: The end of the compressed air main pipe is connected to the middle position of the cross pipe (5) by welding, the cross pipe (5) and the nozzle (6) are provided with quick connectors, and the air guide pipe (9) is a plastic hose.

5. The purging system for a strip steel surface quality detection system according to claim 1, characterized in that: An adjustment handle (8) is provided at one end of the support rod (7), and a bolt hole is dug on the side of the support rod (7), through which the nozzle (6) is fixed.

6. The purging system for a strip steel surface quality detection system according to claim 1, characterized in that: It also comprises a blower slot (18) and a box-type filter chute (19), wherein the blower slot (18) and the box-type filter chute (19) are arranged in the clean air chamber (12), the blower (13) is installed in the blower slot (18), and the box-type filter (14) is installed in the box-type filter chute (19).

7. The purging system for a strip steel surface quality detection system according to claim 1, characterized in that: One side of the air inlet of the clean air chamber (12) is a square opening, and the air outlet (17) of the clean air chamber is a circular opening.

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