Box girder blowing device and box girder assembly

Abstract

The utility model discloses a box girder blowing device and a box girder assembly. The box girder blowing device comprises an air source, an air supply pipeline and a first nozzle. Purging gas is stored in the gas source; an inlet of the air supply pipeline is connected with an air source, and an outlet of the air supply pipeline is connected with the first nozzle. The first nozzles are arranged in the box girder to be purged. According to the box girder blowing device and the box girder assembly, on one hand, high-pressure gas stored in the gas source is blown into the box girder through the nozzles, positive air pressure in the box girder is formed, dust is prevented from entering the box girder, and it is guaranteed that the interior of the box girder is clean; on the other hand, the blowing gas fed into the box girder is used for blowing and cooling the strip steel surface detection mechanism in the box girder, so that the temperature of the strip steel surface detection mechanism is prevented from being too high.

Description

Technical Field

[0001] The utility model relates to Box beam The technical field relates to a box beam blowing device and a box beam assembly used in a rolling line. Background Art

[0002] During the strip rolling process, a surface detection device is used to capture images of the strip surface to detect surface defects of the strip. In order to protect the surface detection device, the surface detection device is usually protected by a box girder. A transparent window facing the rolling line is provided on the box girder to facilitate the surface detection device to capture images of the strip surface.

[0003] When the dust on site adheres to the box girder, the image of the strip surface taken by the surface detection device will not be clear enough, resulting in missed detection and misjudgment of surface defects, affecting the quality and efficiency of strip production. Utility Model Content

[0004] In view of the above problems, the present application is proposed to provide a box beam blowing device and a box beam assembly that overcome the above problems or at least partially solve the above problems.

[0005] In a first aspect, a box beam purge device is provided, comprising: an air source, an air delivery pipeline, and a first nozzle;

[0006] The gas source stores purge gas;

[0007] The inlet of the air supply pipeline is connected to the air source, and the outlet of the air supply pipeline is connected to the first nozzle;

[0008] The first nozzle is arranged inside the box beam to be purged.

[0009] Optionally, it also includes at least one group of second nozzles, which are connected to the outlet of the air supply pipe; wherein one side of the box beam has a transparent window, and the second nozzles are arranged on the side of the outside of the box beam close to the transparent window.

[0010] Optionally, the second nozzle has at least one ejection port, and an angle is formed between the axis of the ejection port and the transparent window, and the angle is greater than 0° and less than or equal to 45°.

[0011] Optionally, two groups of second nozzles are arranged opposite to each other on both sides of the box beam, and the spray outlets of the two groups of second nozzles are arranged opposite to each other.

[0012] Optionally, it also includes a controller and multiple solenoid valves; the air supply pipeline includes a main pipeline and multiple branch pipelines, the inlet of the main pipeline is connected to the air source, the outlet of the main pipeline is connected to the inlet of the multiple branch pipelines, the outlet of each branch pipeline is connected to the first nozzle or the second nozzle, and the solenoid valves are arranged one by one on the multiple branch pipelines; the controller is electrically connected to the solenoid valves for controlling the conduction or disconnection of the solenoid valves.

[0013] Optionally, an oil-water separator is also included, and the oil-water separator is arranged on the main pipeline.

[0014] Optionally, a human-computer interaction device is also included, and the controller is electrically connected to the human-computer interaction device.

[0015] In a second aspect, a box girder assembly is provided, comprising a box girder and the box girder blowing device of the first aspect, wherein a box girder cover is arranged outside a strip surface detection mechanism on a rolling line.

[0016] Optionally, the strip surface detection mechanism includes a first surface detector and a second surface detector, the first surface detector is arranged on the upper side of the rolling line, and the second surface detector is arranged on the lower side of the rolling line;

[0017] The box beam comprises: an upper box beam and a lower box beam; the upper box beam cover is arranged outside the first surface detector, and the lower box beam cover is arranged outside the second surface detector.

[0018] Optionally, an air outlet is provided on the box girder, and a filtering mechanism is filled in the air outlet.

[0019] The technical solution provided by this application has at least the following technical effects or advantages:

[0020] The box beam purge device and box beam assembly provided by the present application, on the one hand, use a nozzle to blow high-pressure gas stored in a gas source into the interior of the box beam, forming a positive air pressure inside the box beam, preventing dust from entering, and ensuring the cleanliness of the interior of the box beam. On the other hand, the purge gas sent into the interior of the box beam blows air to cool the strip steel surface detection mechanism in the box beam, preventing the strip steel surface detection mechanism from being overheated.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of a strip steel surface detection device in an embodiment of the present application;

[0024] Figure 2 This is a block diagram of the box beam purge device in the embodiment of the present application;

[0025] Figure 3 This is a structural diagram of the box girder blowing device in an embodiment of the present application. DETAILED DESCRIPTION

[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0027] Various structural schematic diagrams according to embodiments of the present application are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may further design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0028] In order to better understand the above-mentioned technical scheme, the above-mentioned technical scheme will be described in detail below in combination with specific implementation methods. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical scheme of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0029] In the field of steel processing and production, the strip surface detection device 101 is used to detect surface defects of the strip on the rolling line, such as Figure 1 As shown, eight strip surface detection devices 101 are transversely arranged in groups of four on the upper and lower sides of the longitudinally moving strip 100. The strip surface detection devices 101 are provided with lighting lamps and cameras. The lighting lamps illuminate the surface of the strip 100 to be detected, and the cameras photograph the surface of the strip 100. The photographs taken are used to obtain defects on the surface of the strip 100.

[0030] In order to protect the strip surface detection device 101, the box beam 102 is covered on the outside of the strip surface detection device 101, and a transparent window is set on the side of the box beam 102 close to the strip 100 for the lighting and camera to work. When the iron oxide dust at the rolling line site adheres to the transparent window or the camera, the image taken by the camera will be unclear or missed, which will reduce the production quality and efficiency. Therefore, it is very important to clean the strip surface detection device 101 and the box beam 102. Since the strip surface detection device 101 is in the production line, if it is cleaned manually, the body needs to be inclined towards the production line, so if the strip 100 is running, it is likely to cause a safety accident of personal injury.

[0031] In view of this, the present application provides a box beam purge device, please refer to Figure 2 , 3 , Figure 2This is a block diagram of the box beam purge device in the embodiment of this application. Figure 3 The box beam purge device 200 in the embodiment of the present application is a structural diagram. The box beam purge device 200 comprises: a gas source 201, a gas delivery pipeline 202, and a first nozzle 203. The gas source 201 stores purge gas, and the purge gas can be compressed gas in the factory. The inlet of the gas delivery pipeline 202 is connected to the gas source 201, and the outlet of the gas delivery pipeline 202 is connected to the first nozzle 203. The first nozzle 203 is arranged inside the box beam 102 to be purged.

[0032] The high-pressure gas stored in the gas source 201 is blown into the box beam 102 by a nozzle to form a positive air pressure inside the box beam 102, thereby preventing dust from entering and ensuring the cleanliness of the box beam 102. On the other hand, the purge gas sent into the box beam 102 cools the strip surface detection mechanism in the box beam 102 to prevent the strip surface detection mechanism from being overheated.

[0033] In order to inspect the upper and lower sides of the steel strip 100, the steel strip surface inspection mechanism includes a first surface inspection instrument and a second surface inspection instrument. The first surface inspection instrument is arranged on the upper side of the rolling line to take pictures of the upper surface of the steel strip 100, and the second surface inspection instrument is arranged on the lower side of the rolling line to take pictures of the lower surface of the steel strip 100. Two sets of corresponding box beams 102 are also required, specifically including: an upper box beam 102 and a lower box beam 102; the upper box beam 102 is covered outside the first surface inspection instrument, and the lower box beam 102 is covered outside the second surface inspection instrument.

[0034] For the lower box beam 102, its transparent window faces upward, facing the lower surface of the strip steel 100, so it is easy for dust to fall on the window. Therefore, in some feasible implementations, Figure 2 As shown, the box beam blowing device 200 further includes at least one set of second nozzles 204, and the second nozzles 204 are connected to the outlet of the air supply pipe 202; wherein, a transparent window is provided on one side of the box beam 102, and the second nozzles 204 are arranged on a side of the outside of the box beam 102 close to the transparent window. The second nozzle 204 has at least one ejection port, and an angle is formed between the axis of the ejection port and the transparent window, and the angle is greater than 0° and less than or equal to 45°.

[0035] For example, Figure 3 As shown, two groups of second nozzles 204 are arranged oppositely on both sides of the box beam 102, and each second nozzle 204 has two nozzles. The two groups of four nozzles are used for opposite-shooting and sweeping, and the iron oxide and other dust on the upper surface of the lower box beam 102 are blown away by convection wind, and no dust is left on the transparent window, thereby achieving better dust removal requirements and eliminating the insecurity of manual cleaning.

[0036] In some optional embodiments, Figure 3As shown, the box girder blowing device 200 also includes a controller 205 and multiple solenoid valves 206; the air supply pipeline 202 includes a main pipeline 2021 and multiple branch pipelines 2022, the inlet of the main pipeline 2021 is connected to the air source 201, the outlet of the main pipeline 2021 is connected to the inlet of the multiple branch pipelines 2022, the outlet of each branch pipeline 2022 is connected to the first nozzle 203 or the second nozzle 204, and the solenoid valves 206 are arranged one by one on the multiple branch pipelines 2022; the controller 205 is electrically connected to the solenoid valve 206, and is used to control the solenoid valve 206 to be turned on or off.

[0037] The box girder 102 is movably installed on the side of the rolling line and can be pulled out or pushed forward laterally along the rolling line. The branch pipe 2022 can adopt a soft air pipe and be wrapped by a tank chain. It can move with the box girder 102 being pushed forward or pulled out, so that the soft air pipe is not exposed to the outside. It is not only beautiful but also does not affect the blowing effect. It can also effectively protect the branch pipe 2022 from being damaged by scratching or the like caused by external factors.

[0038] In some optional embodiments, Figure 3 As shown, the box beam purge device 200 also includes an oil-water separator 207, which is arranged on the main pipeline 2021. The oil-water separator 207 filters the purge gas to prevent particulate impurities from being blown into the box beam 102. A hand valve 208 is also arranged on the main pipeline 2021, and the hand valve 208 is located between the oil-water separator 207 and the gas source 201, so that the operator can manually close the box beam purge device 200.

[0039] In some optional embodiments, Figure 3 As shown, the box beam blowing device 200 also includes a human-machine interaction device 209 , and the controller 205 is electrically connected to the human-machine interaction device 209 .

[0040] The specific process steps of the box beam blowing device 200 provided in the embodiment of the present application for application in a rolling line are as follows:

[0041] (1) Plan a reasonable compressed air pipeline route based on the actual situation on site.

[0042] (2) Connect the Φ20 galvanized steel pipe on site from the compressed air duct network in the factory as the air supply pipeline, and connect the galvanized pipe and three-way connector and air pipe connector on the frame of the strip surface detection component (i.e., the first surface detector 1011 and the second surface detector 1012).

[0043] (3) Install the front-end control hand valve 208, and then connect the air pipe inlet to the oil-water separator 207. To avoid impurities such as water and oil in the compressed air, install the oil-water separator 207 for air filtration to ensure the quality of the purging compressed air and prevent impurities from being blown out and causing stains on the surface of the detection device.

[0044] (4) The oil-water separation outlet is connected to the air inlet of the gas-passing solenoid valve group (i.e., solenoid valve 206) using a 16mm PU high-pressure air pipe. The 16mm PU high-pressure air pipe is connected from the galvanized pipe tee to the double-ended flat air nozzles (first nozzle 203) on both sides. The other two air pipes are connected to the upper box beam 1021 and the lower box beam 1022 through tank chains. Then, the PLC signal controls the solenoid valve 206 according to the compressed air with different functions to achieve the purpose of purging.

[0045] (5) After connecting the field device, connect the signal cable from the PLC control cabinet to the solenoid valve 206 head, find the output signal point in the DO module of the PLC (i.e., the controller 205), and connect the signal cable. Make the logic in the program, and then add the solenoid valve 206 switch control button and the open and close display status from the HMI screen (i.e., the human-computer interaction device 209).

[0046] (6) Open the on-site manual valve 208, adjust the air pressure of the oil-water separator 207, and put it into use after checking for leaks.

[0047] (7) The first control of the air-through solenoid valve group is to blow the air against the transparent window of the lower box beam 1022. A 16mm PU high-pressure air pipe is connected from the air-through solenoid valve group to one end of the Φ20 galvanized air pipe fixed on site. The total length of the galvanized air pipe on site is 4 meters. A three-way joint is added at two meters to connect the 16mm PU high-pressure air pipe to the double flat-head air blowing joint and then fixed to the steel beam on the transmission side of the rolling line. The air is blown toward the operating side, facing the transparent window of the lower box beam 1022. The top end of the galvanized air pipe is also connected to the double flat-head air blowing joint and fixed to the steel beam on the operating side of the rolling line. The air is blown toward the transparent window of the lower box beam 1022, facing the transmission side.

[0048] The convection compressed wind formed by the two sets of double flat head air blowing joints (i.e., the second nozzle 204) can effectively remove the iron oxide dust dropped from the strip steel 100. (The blowing direction of the air nozzle of the double flat head air blowing joint can be adjusted according to the angle of the site to achieve a better blowing effect. The automatic control logic is that when the production line is running, the PLC (controller 205) issues a valve opening command, and the solenoid valve 206 opens to allow compressed air to blow. When the production line stops, the PLC (controller 205) issues a valve closing command, and the solenoid valve 206 closes to save energy. The operator can also manually control the blowing switch in the HMI screen (i.e., the human-computer interaction device 209).

[0049] (8) The second and third control paths of the air-through solenoid valve group are used for the positive pressure purge air inside the first surface detector 1011 and the lower box beam 1022. The 8mm PU high-pressure air duct is connected from the air-through solenoid valve group through the cable tank chain on the upper and lower surfaces, and is respectively connected to the air outlet connection at one end of the upper box beam 1021 and the lower box beam 1022, forming positive air pressure inside the upper box beam 1021 and the lower box beam 1022. Its control logic is that the PLC instruction is the valve normally open state, and the air pressure and cooling inside the upper box beam 1021 and the lower box beam 1022 are always maintained. The manual control switch can also be selected in the HMI screen to turn off the air when the production line is shut down for maintenance, thereby saving energy.

[0050] Based on the same inventive concept, an embodiment of the present application further provides a box girder assembly, including a box girder 102 and a box girder blowing device 200 of the above embodiment, wherein the box girder 102 is covered on the outside of a strip surface detection mechanism on a rolling line.

[0051] In some optional embodiments, the strip surface detection mechanism includes a first surface detector 1011 and a second surface detector 1012. The first surface detector 1011 is arranged on the upper side of the rolling line, and the second surface detector 1012 is arranged on the lower side of the rolling line. The box beam 102 includes: an upper box beam 1021 and a lower box beam 1022; the upper box beam 1021 is covered on the outside of the first surface detector 1011, and the lower box beam 1022 is covered on the outside of the second surface detector 1012.

[0052] In some optional embodiments, an air outlet 1023 is provided on the box beam 102 , and the air outlet 1023 is filled with a filtering mechanism, such as filter cotton and a dustproof net, to prevent dust from entering the box beam 102 through the air outlet 1023 .

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0054] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

Claims

1. A box beam purge device, characterized in that: include: An air source, an air delivery pipeline, a first nozzle and at least one set of second nozzles; The gas source stores a purge gas; The inlet of the air supply pipeline is connected to the air source, and the outlet of the air supply pipeline is connected to the first nozzle and the second nozzle; The first nozzle is arranged inside the box beam to be purged, the box beam cover is arranged outside the strip surface detection mechanism on the rolling line, and one side of the box beam has a transparent window; The second nozzle is arranged on a side of the outside of the box beam close to the transparent window.

2. The box beam purging device according to claim 1, characterized in that: The second nozzle has at least one ejection port, and an included angle is formed between an axis of the ejection port and the transparent window, and the included angle is greater than 0° and less than or equal to 45°.

3. The box beam purging device according to claim 2, characterized in that: The two groups of the second nozzles are arranged oppositely on both sides of the box beam, and the spray outlets of the two groups of the second nozzles are arranged oppositely.

4. The box beam purging device according to claim 1, characterized in that: It also includes a controller and multiple solenoid valves; the air supply pipeline includes a main pipeline and multiple branch pipelines, the inlet of the main pipeline is connected to the air source, the outlet of the main pipeline is connected to the inlet of the multiple branch pipelines, the outlet of each branch pipeline is connected to the first nozzle or the second nozzle, and the solenoid valves are arranged one by one on the multiple branch pipelines; the controller is electrically connected to the solenoid valves, and is used to control the conduction or disconnection of the solenoid valves.

5. The box beam purging device according to claim 4, characterized in that: It also includes an oil-water separator, which is arranged on the main pipeline.

6. The box beam purging device according to claim 4, characterized in that: It also includes a human-computer interaction device, and the controller is electrically connected to the human-computer interaction device.

7. A box beam assembly, characterized in that: It comprises a box girder and a box girder blowing device as described in any one of claims 1 to 6.

8. The box beam assembly according to claim 7, characterized in that: The strip steel surface detection mechanism comprises a first surface detector and a second surface detector, wherein the first surface detector is arranged on the upper side of the rolling line, and the second surface detector is arranged on the lower side of the rolling line; The box beam comprises: an upper box beam and a lower box beam; the upper box beam cover is arranged outside the first surface detector, and the lower box beam cover is arranged outside the second surface detector.

9. The box beam assembly according to claim 7, characterized in that: An air outlet is arranged on the box beam, and a filter mechanism is filled in the air outlet.

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