Single green body smoke leakage detection device for silicon carbide honeycomb ceramic carrier

Abstract

The invention provides a single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier, which can detect the smoke leakage condition of a single green body in advance, greatly reduce the reject ratio during finished product detection, and reduce the reworking difficulty of subsequent procedures. An exhaust fume collecting hood is arranged at the upper end of the water mist generator; the green body clamping mechanism comprises a green body supporting plate, the green body supporting plate is arranged at the upper end of the exhaust fume collecting hood and provided with a plurality of fog penetrating areas corresponding to green bodies, the green bodies are arranged on the fog penetrating areas, the green body supporting plate is provided with a plurality of green body clamping air bags, and the green body clamping air bags clamp the green bodies to seal the peripheries of the green bodies. Water mist generated by the water mist generating mechanism can only pass through the mist penetrating area to penetrate through the green body from the lower end of the green body from bottom to top. The laser emitting mechanism comprises a laser generator, laser emitted by the laser generator can penetrate through water mist flowing through the green body, and the laser emitting mechanism is used for judging the smoke leakage condition of the green body according to the color depth of the laser.

Description

Technical Field

[0001] The invention relates to the technical field of production and application of honeycomb ceramic carriers, in particular to a single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier. Background Art

[0002] Silicon carbide honeycomb ceramic carrier is a porous ceramic material with a high specific surface area and porosity, so it can be used as a carrier to carry various catalysts, adsorbents and other active substances. Honeycomb ceramic carriers are widely used in automobile exhaust purification, industrial waste gas treatment, catalyst carriers and other fields. In order to ensure that the filtration and adsorption performance of silicon carbide carriers meet the requirements of National VI, the finished silicon carbide carriers are currently required to undergo smoke leakage detection. If smoke leakage is detected, the finished silicon carbide carrier needs to be reworked or even scrapped.

[0003] However, due to the limitations of material properties, it is difficult to directly process the silicon carbide honeycomb ceramic carrier into a configuration size suitable for the engine after-treatment system, and it needs to be spliced ​​later. For example, a Chinese invention with announcement number CN220635097U discloses an auxiliary splicing device for a silicon carbide honeycomb ceramic carrier. The current conventional carrier is spliced ​​by 16 blanks. If the finished silicon carbide honeycomb ceramic carrier is directly tested, once multiple blanks leak smoke or a single blank leaks smoke in multiple places, it will cause difficulties in rework, increase the scrap rate, and greatly increase the production cost. Summary of the invention

[0004] In view of the above problems, the present invention provides a single green body smoke leakage detection device for silicon carbide honeycomb ceramic carrier, which can detect the smoke leakage of a single green body in advance, greatly reduce the unqualified rate during finished product inspection, and also reduce the difficulty of rework in subsequent processes.

[0005] The technical solution is as follows: a single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier, characterized in that it includes:

[0006] A water mist generating mechanism, the water mist generating mechanism comprising a water mist generator, and a smoke collecting hood is arranged at the upper end of the water mist generator;

[0007] A blank clamping mechanism, the blank clamping mechanism comprises a blank support plate, the blank support plate is arranged at the upper end of the smoke hood, the blank support plate is provided with a plurality of mist penetration areas corresponding to the blank, the blank is placed on the mist penetration areas, a plurality of blank clamping airbags are arranged on the blank support plate, the blank clamping airbags clamp the blank and can close the surrounding of the blank, and the water mist generated by the water mist generating mechanism can only pass through the mist penetration areas and pass through the blank from the lower end of the blank from bottom to top;

[0008] The laser emitting mechanism comprises a laser generator. The laser emitted by the laser generator can pass through the water mist flowing through the blank, and is used to judge the smoke leakage of the blank according to the color depth of the laser.

[0009] Furthermore, the blank support plate is installed on the detection table, and an installation groove support frame is arranged on the blank support plate. The installation groove support frame surrounds the outer side of the fog-permeable area, and an airbag installation groove is arranged on the upper end of the installation groove support frame. The blank clamping airbag is installed in the airbag installation groove.

[0010] Furthermore, the airbag mounting groove includes a supporting base plate, and a matching airbag mounting upper plate and an airbag mounting lower plate are provided at the upper end of the supporting base plate. The supporting base plate and the airbag mounting upper plate and the airbag mounting lower plate are fixed together by bolts. The airbag mounting upper plate and the airbag mounting lower plate have airbag positioning cavities corresponding to the blank clamping airbag, and the airbag mounting upper plate and the airbag mounting lower plate are also provided with airbag pipeline avoidance grooves.

[0011] Furthermore, the blank clamping mechanism also includes a protective cover, and a window area is correspondingly arranged on the protective cover.

[0012] Furthermore, the protective cover includes a protective cover outer frame and a protective cover inner frame, the protective cover outer frame is provided with a plurality of height adjustment holes, the protective cover inner frame is provided with fixing holes, and the protective cover outer frame and the protective cover inner frame are fixed together by bolts and nuts in cooperation with the height adjustment holes and the fixing holes.

[0013] Furthermore, the mounting groove support frame includes a support frame outer frame and a support frame inner frame, the protective cover outer frame is provided with a plurality of height adjustment holes, the support frame inner frame is provided with fixing holes, and the support frame outer frame and the support frame inner frame are fixed together by bolts and nuts in cooperation with the height adjustment holes and the fixing holes.

[0014] Furthermore, the laser emitting mechanism also includes a mounting bracket, and the laser generator is mounted on the mounting bracket.

[0015] Furthermore, the mounting bracket includes an adjustable base, the adjustable base is provided with a long hole, the adjustable base is fixed to the detection table by bolts, the mounting bracket is provided with a vertical adjustment groove, and also includes a second bracket, the second bracket is provided with an adjustment groove, the second bracket is fixed together with the mounting bracket by bolts and nuts and the vertical adjustment groove and the adjustment groove, and the laser generator is installed on the second bracket.

[0016] Furthermore, the blank clamping airbag is connected to a pneumatic device via an airbag pipeline, and the pneumatic device includes an air source and a reversing valve.

[0017] Furthermore, the detection table is installed on a stand, and the stand is also provided with a light shield.

[0018] The present invention has the following advantages:

[0019] The single green body smoke leakage detection device of the silicon carbide honeycomb ceramic carrier of the present invention performs smoke leakage detection at the single green body stage, replacing the detection of the finished product of the silicon carbide honeycomb ceramic carrier, thereby avoiding the situation where the smoke leakage problem is discovered after the subsequent assembly is completed. The single green body with the smoke leakage problem can be screened out at an early stage, thereby reducing the scrap rate of the overall product, greatly reducing the cost loss caused by batch scrapping, reducing the production cost and rework cost, and improving the economic benefits of the enterprise;

[0020] The single-body smoke leakage detection device for the silicon carbide honeycomb ceramic carrier provided by the present invention is simple and intuitive to use. Water mist is generated by a water mist generating mechanism, and the body is clamped by a body clamping mechanism so that the water mist only passes through the single body from the inside of the body, thereby ensuring the reliability of detection. The detection only requires observing the color change of the laser emitted by the laser emitting mechanism passing through the water mist to determine whether there is a smoke leakage phenomenon. The detection work can be completed without the need for professional and complex testing equipment and technicians, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier in an embodiment;

[0022] Figure 2 It is a front view of a single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier in the embodiment;

[0023] Figure 3 A top view of a single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier in an embodiment;

[0024] Figure 4 A stereoscopic diagram of a blank clamping mechanism in an embodiment viewed from top to bottom at a first viewing angle;

[0025] Figure 5 is a stereoscopic view of a blank clamping mechanism in the embodiment from a second perspective viewed from bottom to top;

[0026] Figure 6 It is a schematic diagram of a separation airbag of a blank clamping mechanism after being installed on a plate in an embodiment;

[0027] Figure 7 It is a three-dimensional diagram of another single green body smoke leakage detection device of a silicon carbide honeycomb ceramic carrier with a protective cover in the embodiment;

[0028] Figure 8 is a three-dimensional diagram of the laser emitting mechanism in the embodiment;

[0029] Fig. 9 It is a three-dimensional view of another single-body smoke leakage detection device of a silicon carbide honeycomb ceramic carrier with a light shield in the embodiment. DETAILED DESCRIPTION

[0030] As described in the background technology, the common problem encountered in the production process of silicon carbide honeycomb ceramic carriers is smoke leakage. The traditional detection method is to perform it in the entire carrier finished product stage, which is not only inefficient, but also often requires a lot of rework or scrapping once defects are found, thereby significantly increasing production costs. In view of the defects of the detection method, this application proposes a single green body smoke leakage detection device for silicon carbide honeycomb ceramic carriers, which performs smoke leakage detection at the single green body stage.

[0031] See Figures 1 to 6 In the embodiment, the single green body smoke leakage detection device of the silicon carbide honeycomb ceramic carrier comprises:

[0032] The water mist generating mechanism 100 comprises a water mist generator 101, and a smoke collecting hood 102 is arranged at the upper end of the water mist generator 101;

[0033] The blank clamping mechanism 200 includes a blank support plate 201, which is arranged at the upper end of the smoke hood 102. The blank support plate 201 is provided with a plurality of mist penetration areas 202 corresponding to the blank, and the blank 1 is placed on the mist penetration area 202. In the embodiment, the mist penetration area is made of a mesh plate. In other embodiments, a perforated plate, a filter screen, a screen, etc. can be used. The blank support plate 201 is provided with a plurality of blank clamping airbags 203. The blank clamping airbags 203 can be square or annular, as long as they can surround the blank 1. The blank clamping airbags 203 clamp the blank 1 to close the surrounding of the blank 1. The water mist generated by the water mist generating mechanism 100 can only pass through the mist penetration area 202 and pass through the blank 1 from the lower end of the blank 1 from bottom to top;

[0034] The laser emitting mechanism 300 includes a laser generator 301 . The laser emitted by the laser generator 301 can pass through the water mist flowing through the blank 1 , and is used to judge the smoke leakage of the blank 1 according to the color depth of the laser.

[0035] Water mist is a suspension composed of a large number of tiny water droplets. These tiny particles have a strong scattering effect on light. When light passes through the mist, scattering occurs, causing the light to scatter in all directions. Light of different wavelengths scatters differently in the mist. Light with shorter wavelengths scatters more strongly, while light with longer wavelengths scatters less strongly. Since lasers have high directivity and brightness, when the laser beam passes through water mist, the scattered light can still maintain a certain brightness and directionality due to its narrow beam and concentrated energy. This enables the laser beam to form a relatively bright and visible light path in the water mist. For billets with severe smoke leakage, there is also a lot of water mist passing through the billet. Therefore, the smoke leakage can be judged by the depth of the laser color. If the color is dark, there is smoke leakage, and vice versa, if the color is light, there is no smoke leakage.

[0036] The single-piece smoke leakage detection device of the silicon carbide honeycomb ceramic carrier in the embodiment effectively improves product quality and reduces production costs by introducing earlier detection points in the production process; through the combination of the laser emission mechanism and the water mist generation mechanism, an intuitive and simple way is provided for operators to observe and judge the smoke leakage of the body. This design improves the detection efficiency and reduces the dependence on the professional skills of the operator, realizing a batch of single-piece smoke leakage detection devices, which can accurately identify potential smoke leakage problems in the early stages of honeycomb ceramic carrier production, which helps to remove defective products in time, prevent defective products from entering the subsequent production process, and improve the quality of the final product. By performing smoke leakage detection in the early stages of production, the additional costs caused by rework and scrapping can be greatly reduced.

[0037] In one embodiment of the present invention, a blank support plate 201 is installed on a detection table 204, and a mounting groove support frame 205 is arranged on the blank support plate 201. The mounting groove support frame 205 surrounds the outer side of the mist penetration area 202, and an airbag mounting groove 206 is arranged on the upper end of the mounting groove support frame 205. The blank clamping airbag 203 is installed in the airbag mounting groove 206. The mounting groove support frame 205 and the airbag mounting groove 206 are sealed around and at the upper end of the mist penetration area, which can further prevent fog leakage, so that the fog will not leak out from the area outside the mist penetration area 202. The blank clamping airbag 203 is inflated, clamped and sealed around the blank, so that the fog flows on the inner wall of the blank.

[0038] In the embodiment, the airbag mounting groove includes a supporting base plate 206C, and the upper end of the supporting base plate 206C is provided with a matching airbag mounting upper plate 206A and an airbag mounting lower plate 206B. The supporting base plate 206C, the airbag mounting upper plate 206A and the airbag mounting lower plate 206C are fixed together by bolts. The airbag mounting upper plate 206A and the airbag mounting lower plate 206B have an airbag positioning cavity 207 corresponding to the blank clamping airbag. The airbag mounting upper plate 206A and the airbag mounting lower plate 206B are also provided with an airbag pipeline avoidance groove 208. The setting of the airbag mounting groove can also prevent the airbag from aging and cracking and injuring people.

[0039] See Figure 7 In one embodiment, the blank clamping mechanism also includes a protective cover 209, and a window area is correspondingly arranged on the protective cover 209 to allow the blank clamping airbag and the blank to be exposed. The setting of the protective cover 209 protects the operator from possible airbag rupture and the equipment itself from damage by adding a protective cover around the blank clamping mechanism, thereby improving the safety and stability of the entire device.

[0040] In one embodiment, the protective cover includes a protective cover outer frame 209A and a protective cover inner frame 209B. The protective cover outer frame 209A is provided with a plurality of height adjustment holes 209C, and the protective cover inner frame 209B is provided with fixing holes. The protective cover outer frame and the protective cover inner frame are fixed together by bolts, nuts, the height adjustment holes and the fixing holes. The setting of the protective cover outer frame 209A and the protective cover inner frame 209B can flexibly adjust the height of the protective cover to meet the protection requirements of different models of height blanks.

[0041] In one embodiment, the mounting groove support frame 205 includes a support frame outer frame 205A and a support frame inner frame 205B. The protective cover outer frame 205A is provided with a plurality of height adjustment holes 205C, and the support frame inner frame is provided with fixing holes. The support frame outer frame and the support frame inner frame are fixed together by bolts, nuts, height adjustment holes and fixing holes. The detection height can be flexibly adjusted to meet the detection requirements of different models of height blanks.

[0042] See Figure 8In one embodiment, the laser emitting mechanism 300 also includes a mounting bracket 302, the mounting bracket includes an adjustable base 303, the adjustable base 303 is provided with a long hole 304, the adjustable base 303 is fixed to the detection table 204 by bolts, the mounting bracket 302 is provided with a vertical adjustment slot 305, and also includes a second bracket 306, the second bracket 306 is provided with an adjustment slot 307, the second bracket 306 is fixed to the mounting bracket 302 by bolts, nuts, the vertical adjustment slot 305 and the adjustment slot 307, the laser generator 101 is installed on the second bracket 306, and through the setting of the mounting bracket, the position and height of the laser emitter can also be adjusted accordingly, which can meet the detection requirements of blanks of different models and heights.

[0043] In the embodiment, the laser emitting mechanism 100, the mounting slot support frame 205 and the protective cover 209 all have a height adjustment function, which can adapt to the requirements of blank detection at different heights, so that the same set of devices can be applied to products of various models, thereby improving the versatility and utilization rate of the equipment.

[0044] In one embodiment, the blank clamping airbag is connected to a pneumatic device through an airbag pipeline 212, and the pneumatic device includes an air source and a reversing valve 210. When inflation is required, the reversing valve switches to the inflation channel, so that the air source is connected to the blank clamping airbag, and compressed air enters the blank clamping airbag to expand it, and the blank clamping airbag embraces and clamps the blank; when deflation is required, the reversing valve switches to the deflation channel, so that the blank clamping airbag is connected to the atmosphere or the exhaust system, and the gas in the blank clamping airbag is discharged. In addition, in some embodiments, the deflation channel may not be provided, and the air source supply may be cut off by controlling the reversing valve, and the elasticity of the blank clamping airbag itself or an external exhaust device may be used to achieve deflation, and the blank may be taken out after deflation.

[0045] See Fig. 9 In one embodiment, the detection table 204 is installed on a stand 211, and the stand 211 is also provided with a light shield 213. The setting of the light shield 213 can further facilitate the observation of water mist.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier, characterized in that: include: A water mist generating mechanism, the water mist generating mechanism comprising a water mist generator, and a smoke collecting hood is arranged at the upper end of the water mist generator; A blank clamping mechanism, the blank clamping mechanism comprises a blank support plate, the blank support plate is arranged at the upper end of the smoke hood, the blank support plate is provided with a plurality of mist penetration areas corresponding to the blank, the blank is placed on the mist penetration areas, a plurality of blank clamping airbags are arranged on the blank support plate, the blank clamping airbags clamp the blank and can close the surrounding of the blank, and the water mist generated by the water mist generating mechanism can only pass through the mist penetration areas and pass through the blank from the lower end of the blank from bottom to top; The laser emitting mechanism comprises a laser generator. The laser emitted by the laser generator can pass through the water mist flowing through the blank, and is used to judge the smoke leakage of the blank according to the color depth of the laser.

2. The single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier according to claim 1, characterized in that: The blank support plate is installed on the detection table, and a mounting groove support frame is arranged on the blank support plate. The mounting groove support frame surrounds the outer side of the mist penetration area, and an airbag mounting groove is arranged on the upper end of the mounting groove support frame. The blank clamping airbag is installed in the airbag mounting groove.

3. The single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier according to claim 2, characterized in that: The airbag mounting groove includes a supporting base plate, and a matching airbag mounting upper plate and an airbag mounting lower plate are provided at the upper end of the supporting base plate. The supporting base plate and the airbag mounting upper plate and the airbag mounting lower plate are fixed together by bolts. The airbag mounting upper plate and the airbag mounting lower plate have airbag positioning cavities corresponding to the blank clamping airbag, and the airbag mounting upper plate and the airbag mounting lower plate are also provided with airbag pipeline avoidance grooves.

4. The single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier according to claim 1, characterized in that: The blank clamping mechanism further comprises a protective cover, and a window area is correspondingly arranged on the protective cover.

5. The single green body smoke leakage detection device for silicon carbide honeycomb ceramic carrier according to claim 4, characterized in that: The protective cover comprises an outer frame and an inner frame. The outer frame is provided with a plurality of height adjustment holes, and the inner frame is provided with fixing holes. The outer frame and the inner frame are fixed together by bolts and nuts in cooperation with the height adjustment holes and the fixing holes.

6. A single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier according to claim 2, characterized in that: The mounting groove support frame includes a support frame outer frame and a support frame inner frame. The protective cover outer frame is provided with a plurality of height adjustment holes, and the support frame inner frame is provided with fixing holes. The support frame outer frame and the support frame inner frame are fixed together by bolts and nuts in cooperation with the height adjustment holes and the fixing holes.

7. The single green body smoke leakage detection device for silicon carbide honeycomb ceramic carrier according to claim 1, characterized in that: The laser emitting mechanism also includes a mounting bracket, and the laser generator is mounted on the mounting bracket.

8. The single green body smoke leakage detection device for a silicon carbide honeycomb ceramic carrier according to claim 7, characterized in that: The mounting bracket includes an adjustable base, which is provided with a long hole, and the adjustable base is fixed to the detection table by bolts. The mounting bracket is provided with a vertical adjustment groove, and also includes a second bracket, which is provided with an adjustment groove, and the second bracket is fixed to the mounting bracket by bolts, nuts, the vertical adjustment groove and the adjustment groove, and the laser generator is installed on the second bracket.

9. The single green body smoke leakage detection device for silicon carbide honeycomb ceramic carrier according to claim 1, characterized in that: The blank clamping airbag is connected to a pneumatic device through an airbag pipeline, and the pneumatic device includes an air source and a reversing valve.

10. The single green body smoke leakage detection device for silicon carbide honeycomb ceramic carrier according to claim 2, characterized in that: The detection table is installed on a stand, and the stand is also provided with a light shield.

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