Blowing device at outlet of flaw detection roller way

Abstract

The utility model discloses a flaw detection roller way outlet blowing device which comprises an annular air knife, the annular air knife comprises a first annular plate and a second annular plate, an annular groove is formed in the inner end face of the first annular plate, a first outer side end face and a first inner side end face are arranged on the two sides of the annular groove, and the first outer side end face is fixedly matched with the inner end face of the second annular plate in a sealing mode. A gap is formed between the first inner side end face and the inner end face of the second annular plate to form a gas outlet, and a gas inlet is formed in the first annular plate, communicated with the annular groove and connected with a hot air flow source. Compressed air flows into the annular groove through the air inlet, the interval / gap between the inner end face of the second annular plate and the end face of the first inner side leaks out at a high speed to form an air knife which blows to the bar, a negative pressure area is formed on the rear side of the air knife, and a large amount of air forms an air ring along with high-speed airflow to blow water drops and sundries on the surface of the bar.

Description

Technical Field

[0001] This utility model relates to a technology for cleaning residual water on the surface of steel at the exit of a flaw detection line, specifically to a blowing device at the exit of a flaw detection roller conveyor. Background Technology

[0002] During the flaw detection process in the finishing workshop, the surface of the steel needs to be moistened with water. However, steel with water on its surface is very prone to corrosion. Therefore, it is necessary to install an air blowing ring to dry the surface moisture of the steel to ensure that the steel remains dry and clean after flaw detection.

[0003] In the current flaw detection line, the air ring is fixed to the flaw detection line outlet by a bracket. The air ring has several air holes on its circumference, which can play a certain drying role. However, since the air holes are distributed at intervals, the air is emitted in bundles. The overall area of ​​the air holes is small, resulting in small air flow and uneven air output. The air ring has a poor drying effect and cannot completely dry the moisture on the surface of the steel, and the steel often rusts. Summary of the Invention

[0004] This invention addresses the problems existing in the prior art by proposing an air blowing device at the outlet of a flaw detection roller conveyor. Compressed air flows into an annular groove through a gas inlet, and is released at high speed at the gap / spacing between the inner end face of the second ring plate and the first inner end face to form an air knife, which blows towards the bar. A negative pressure zone is formed behind the air knife, and a large amount of air follows the high-speed airflow to form an air ring that sweeps away water droplets and debris from the surface of the bar.

[0005] The technical solution adopted by this utility model is: an air blowing device at the outlet of the flaw detection roller, including an annular air knife. The annular air knife includes a first annular plate and a second annular plate. The inner end face of the first annular plate has an annular groove. The two sides of the annular groove are a first outer end face and a first inner end face. The first outer end face is fixedly sealed with the inner end face of the second annular plate. There is a gap between the first inner end face and the inner end face of the second annular plate to form a gas outlet. The first annular plate has a gas inlet, which is connected to the annular groove and connected to a hot gas flow source.

[0006] Based on the above scheme, as a preferred option, a sealing gasket is provided between the first outer end face and the second ring plate.

[0007] Based on the above scheme, as a preferred option, bolts are used to fix the three together by passing through the first ring plate, the sealing gasket, and the second ring plate.

[0008] Based on the above scheme, as a preferred option, the hot air source includes an air compressor, the air outlet of which is connected to the air inlet of the heating device, and the air inlet of the heating device is connected to a gas inlet via a pipeline.

[0009] Based on the above scheme, as a preferred embodiment, the heating device includes a housing and a resistive element fixedly installed inside the housing. The resistive element is connected to a power source, and an airflow duct is installed inside the housing. The airflow duct's inlet and outlet are located outside the housing.

[0010] Based on the above scheme, as a preferred option, the airflow duct has a spiral section, and the resistive element is located at the center of the spiral section.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] Compressed air flows into the annular groove through the gas inlet, and is released at high speed at the gap / slot between the inner end face of the second ring plate and the first inner end face to form an air knife, which blows towards the bar. A negative pressure zone is formed behind the air knife, and a large amount of air follows the high-speed airflow to form an air ring to sweep away water droplets and debris from the surface of the bar.

[0013] The first and second ring plates are designed separately and are sealed to prevent air leakage.

[0014] The heating device heats the gas to the required temperature, up to 80°C, which can effectively dry the moisture on the surface of the steel.

[0015] The spiral section design extends the gas flow time within the casing, increasing the gas temperature. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a ring-shaped air knife;

[0017] Figure 2 It is a 3D diagram of a ring-shaped air knife;

[0018] Figure 3 This is a schematic diagram of the structure of the first ring plate;

[0019] Figure 4 This is an exploded view of a ring-shaped air knife;

[0020] Figure 5 This is a schematic diagram of the annular air knife and heating device.

[0021] Figure 6 This is a schematic diagram of the heating device;

[0022] Figure 7 A schematic diagram of the interaction between the resistive element and the airflow duct. Detailed Implementation

[0023] The present invention will be further described below through embodiments, but the scope of the present invention is not limited thereto.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] like Figure 1-7 As shown, the air blowing device at the outlet of the flaw detection roller conveyor includes an annular air knife. The annular air knife includes a first annular plate 1 and a second annular plate 2. The inner end face of the first annular plate has an annular groove 3. The two sides of the annular groove are a first outer end face 4 and a first inner end face 5. The first outer end face is fixedly sealed with the inner end face of the second annular plate. There is a gap between the first inner end face and the inner end face of the second annular plate to form a gas outlet 6. The first annular plate has a gas inlet 7. The gas inlet is connected to the annular groove and is connected to a hot gas flow source.

[0026] Preferably, there are several gas inlets 15, which are evenly distributed in the circumferential direction to improve the air intake effect and make the air output more uniform.

[0027] The annular air knife is fixed on the bracket 10.

[0028] Compressed air flows into the annular groove through the gas inlet, and is released at high speed at the gap / slot between the inner end face of the second ring plate and the first inner end face to form an air knife, which blows towards the bar 9. A negative pressure zone is formed behind the air knife, and a large amount of air follows the high-speed airflow to form an air ring to sweep away water droplets and debris on the surface of the bar.

[0029] Preferably, the intervals can be set at an angle, such as the second inner end face being a slope with the slope direction facing the second ring plate, or the corresponding part of the second inner end face and the inner end face of the second ring plate being a parallel slope.

[0030] A sealing gasket 8 is provided between the first outer end face and the second ring plate. The sealing gasket can also be a sealing ring, such as an O-ring placed within a groove designed on the first outer end face. The bolts that securely connect the first and second ring plates are located outside the groove. The first and second ring plates are separate designs, employing a sealing mechanism to prevent air leakage.

[0031] Bolts pass through the first ring plate, the sealing gasket, and the second ring plate to securely connect the three.

[0032] The hot air source can be hot air generated from any channel. In this application, the hot air source includes an air compressor. The air outlet of the air compressor is connected to the air inlet of the heating device, and the air inlet of the heating device is connected to a gas inlet via a pipeline. The heating device heats the gas to the required temperature, up to 80°C, which can effectively dry the moisture on the surface of the steel.

[0033] The heating device includes a housing 11 and a resistive element 12 fixedly installed inside the housing. The resistive element is connected to a power source. An airflow duct is installed inside the housing, with the air inlet 13 and outlet 14 located outside the housing. This structural design is easy to obtain materials for and manufacture.

[0034] The airflow duct has a spiral section, with the resistive element located at the center of the spiral section. The spiral section design extends the gas flow time within the casing, increasing the gas temperature.

[0035] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. A flaw detection roller conveyor outlet air blowing device, characterized in that, The device includes an annular air knife, which comprises a first annular plate and a second annular plate. The inner end face of the first annular plate has an annular groove, and the two sides of the annular groove are a first outer end face and a first inner end face. The first outer end face is fixedly sealed to the inner end face of the second annular plate. There is a gap between the first inner end face and the inner end face of the second annular plate to form a gas outlet. The first annular plate has a gas inlet, which is connected to the annular groove and connected to a hot gas flow source.

2. The air blowing device at the outlet of the flaw detection roller conveyor as described in claim 1, characterized in that, A sealing gasket is provided between the first outer end face and the second ring plate.

3. The air blowing device at the outlet of the flaw detection roller conveyor as described in claim 1, characterized in that, Bolts pass through the first ring plate, the sealing gasket, and the second ring plate to securely connect the three.

4. The air blowing device at the outlet of the flaw detection roller conveyor as described in claim 1, characterized in that, The hot air source includes an air compressor, the air outlet of which is connected to the air inlet of the heating device, and the air inlet of the heating device is connected to the gas inlet via a pipeline.

5. The air blowing device at the outlet of the flaw detection roller conveyor as described in claim 4, characterized in that, The heating device includes a housing and a resistive element fixedly installed inside the housing. The resistive element is connected to a power source. An airflow duct is installed inside the housing, with the air inlet and outlet of the airflow duct located outside the housing.

6. The air blowing device at the outlet of the flaw detection roller conveyor as described in claim 1, characterized in that, The airflow duct has a spiral section, and the resistive element is located at the center of the spiral section.

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