A device and method for detecting the catalyst coating shedding rate

Abstract

The present application provides a catalyst coating peeling rate detection device and method, including a detection platform. A pair of slide rails are provided on the surface of the detection platform, and a bracket is arranged on the pair of slide rails. A air knife mechanism is arranged vertically on one side of the detection platform corresponding to the bracket, and a pneumatic driving mechanism for driving the bracket to slide is arranged on the detection platform. The beneficial effect of the present application is that the test piece to be tested is fixed on the bracket, and the pneumatic driving mechanism drives the bracket to slide along the slide rail, so that the bracket passes by the vertical air knife mechanism arranged on one side of the detection platform at a uniform speed. After the catalyst coating on the test piece is completely covered and blown by the vertical air knife mechanism, the unstable catalyst coating is blown off. Therefore, the mass of the test piece will change before and after the test, and the peeling rate of the catalyst coating can be indirectly measured through the mass difference of the test piece before and after the test. The operation is simple, the reliability is high, and the efficiency is high.

Description

Technical Field

[0001] The present disclosure relates to the technical field of catalyst coating detection, and particularly relates to a device and method for detecting the peeling rate of a catalyst coating. Background Art

[0002] After the honeycomb carrier catalyst coating is produced, it is necessary to detect the firmness of the coating. In the prior art, the general operation method is to manually blow the end face of the catalyst with a compressed air pipe. However, the test stability of the manual operation method is poor, the data fluctuates greatly, the accuracy is not high, and the efficiency is low. Therefore, the peeling rate of the catalyst coating cannot be accurately and efficiently detected. Summary of the Invention

[0003] The purpose of the present application is to solve the above problems and provide a device and method for detecting the peeling rate of a catalyst coating.

[0004] In a first aspect, the present application provides a device for detecting the peeling rate of a catalyst coating, including a detection platform. A pair of slide rails are provided on the surface of the detection platform, and a bracket is arranged on the pair of slide rails. A air knife mechanism is vertically arranged on one side of the detection platform corresponding to the bracket, and a pneumatic driving mechanism for driving the bracket to slide is arranged on the detection platform.

[0005] According to the technical solution provided by the embodiment of the present application, the pneumatic driving mechanism includes a cylinder connected to a gas source. The cylinder is arranged between the pair of slide rails. The telescopic direction of the piston of the cylinder is parallel to the extending direction of the slide rails. The end of the piston of the cylinder is connected to the middle of the bracket, and both sides of the bracket are slidably clamped on the pair of slide rails respectively.

[0006] According to the technical solution provided by the embodiment of the present application, a control valve is arranged between the cylinder and the gas source, and the control valve is used to control the air pressure of the cylinder.

[0007] According to the technical solution provided by the embodiment of the present application, the air knife mechanism includes an air cavity vertically arranged on one side of the detection platform. The air cavity is connected to the gas source, and a plurality of vertically arranged air outlet holes are uniformly arranged on the air cavity. Each of the air outlet holes is arranged at a set position corresponding to the slide rail.

[0008] According to the technical solution provided by the embodiment of the present application, a pressure stabilizing valve is arranged between the air cavity and the gas source, and the pressure stabilizing valve is used to control the air pressure of the air cavity.

[0009] According to the technical solution provided by the embodiment of the present application, the bracket includes a bottom plate. The end of the piston of the cylinder is connected to the bottom plate. Sleeves are respectively arranged at the bottom of the bottom plate corresponding to the pair of slide rails. The sleeves are slidably sleeved outside the slide rails, and a supporting component is connected to one side of the bottom plate away from the sleeves.

[0010] According to the technical solution provided by the embodiment of the present application, the supporting component includes a pair of supporting parts. A liftable scissors frame is arranged between the pair of supporting parts and the bottom plate. One end of the scissors frame is connected to the bottom plate, and the ends of the scissors frame far from the bottom plate are respectively connected to the bottoms of the pair of supporting parts. A supporting surface matching the surface contour of the test piece is provided on one side of the supporting part far from the scissors frame.

[0011] According to the technical solution provided by the embodiment of the present application, the scissors frame includes a first connecting rod and a second connecting rod. The middle of the first connecting rod is hinged to the middle of the second connecting rod, and the first connecting rod and the second connecting rod are cross - arranged; an electric push rod is connected between the ends of the first connecting rod and the second connecting rod close to the bottom plate side. The electric push rod includes a fixed part and a movable part. The fixed part is fixedly connected to the surface of the bottom plate, the fixed part is fixedly connected to the end of the first connecting rod, and the movable part is fixedly connected to the end of the second connecting rod; the ends of the first connecting rod and the second connecting rod far from the electric push rod are respectively connected to the bottoms of the pair of supporting parts.

[0012] Second aspect, the present application provides a method for detecting the catalyst coating peeling rate, including the following steps:

[0013] Weigh the test piece to obtain the first mass;

[0014] Place the test piece on the bracket, and control the bracket to slide on the slide rail at a set speed for a set time through the control valve and the air cylinder;

[0015] Take the test piece off the bracket and weigh the test piece to obtain the second mass;

[0016] Calculate the catalyst coating peeling rate from the difference between the first mass and the second mass.

[0017] The beneficial effects of the present invention: The present application provides a device and a method for detecting the catalyst coating peeling rate. The test piece is fixed on the bracket, and the pneumatic driving mechanism drives the bracket to slide along the slide rail, so that the bracket passes through the vertical air knife mechanism arranged on one side of the detection platform at a constant speed. After the catalyst coating on the test piece is completely blown by the vertical air knife mechanism, the unstable catalyst coating is blown off. Therefore, the mass of the test piece changes before and after the test. The peeling rate of the catalyst coating can be indirectly measured through the mass difference of the test piece before and after the test. The peeling rate detection method carried out by the detection device of the present application is simple in operation, high in reliability and high in efficiency. Description of the Drawings

[0018] Figure 1 It is a top - view structural schematic diagram of the first embodiment of the present application;

[0019] Figure 2 It is a side - view structural schematic diagram of the first embodiment of the present application;

[0020] Figure 3 This is a schematic structural diagram of the air knife mechanism in the first embodiment of the present application;

[0021] Figure 4 This is a schematic structural diagram of the bracket in the first embodiment of the present application;

[0022] Figure 5 This is a flowchart of the second embodiment of the present application;

[0023] The text markings in the figure are represented as: 100, detection platform; 200, slide rail; 300, bracket; 310, bottom plate; 320, sleeve; 330, supporting part; 341, first connecting rod; 342, second connecting rod; 351, fixing part; 352, movable part; 400, air knife mechanism; 410, air cavity; 420, air outlet hole; 430, pressure stabilizing valve; 510, air cylinder; 520, control valve; 600, air source. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present application will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present application.

[0025] As Figures 1 to 3 shown in the schematic diagram of the first embodiment of the present application, it includes a detection platform 100. A pair of slide rails 200 are provided on the surface of the detection platform 100. A bracket 300 is arranged on the pair of slide rails 200. An air knife mechanism 400 is arranged in the vertical direction corresponding to the bracket 300 on one side of the detection platform 100. A pneumatic driving mechanism for driving the bracket 300 to slide is arranged on the detection platform 100.

[0026] In this embodiment, the test piece is a carrier with honeycombs. The test piece is fixed on the bracket 300. The pneumatic driving mechanism drives the bracket 300 to slide along the slide rail 200, so that the bracket 300 passes uniformly through the vertical air knife mechanism 400 arranged on one side of the detection platform 100. After the catalyst coating on the test piece is blown over completely by the vertical air knife mechanism 400, the loose catalyst coating is blown off. Therefore, the mass of the test piece changes before and after the test. The peeling rate of the catalyst coating can be indirectly measured through the mass difference of the test piece before and after the test.

[0027] In a preferred embodiment, the pneumatic driving mechanism includes a cylinder 510 connected to a gas source 600. The cylinder 510 is disposed between a pair of slide rails 200. The extending direction of the piston of the cylinder 510 is parallel to the extending direction of the slide rails 200. The end of the piston of the cylinder 510 is connected to the middle of a bracket 300. Both sides of the bracket 300 are slidably clamped on a pair of slide rails 200 respectively.

[0028] In this preferred embodiment, the cylinder 510 drives the end of its piston to push the bracket 300 to slide along the slide rails 200. The end of the piston of the cylinder 510 is connected to the middle of the bracket 300 to ensure that the end of the piston of the cylinder 510 can stably push the bracket 300 to slide along the slide rails 200.

[0029] Preferably, a control valve 520 is disposed between the cylinder 510 and the gas source 600. The control valve 520 is used to control the air pressure of the cylinder 510. In this preferred embodiment, the control valve 520 controls the opening and closing of the cylinder 510 and the speed of the bracket 300 moving along the slide rails 200 through the cylinder 510.

[0030] In a preferred embodiment, the air knife mechanism 400 includes an air cavity 410 vertically disposed on one side of the detection platform 100. The air cavity 410 is communicated with the gas source 600. A plurality of air outlets 420 arranged vertically are uniformly disposed on the air cavity 410. Each of the air outlets 420 is disposed corresponding to a set position of the slide rails 200.

[0031] In this preferred embodiment, each of the air outlets 420 of the air cavity 410 is vertically disposed, so that the air knife mechanism 400 performs vertical full-coverage blowing on the workpiece to be tested. Through the blowing of the air knife mechanism 400, the unfastened catalyst coating on the workpiece to be tested can be blown off. By sufficiently blowing the workpiece to be tested, the amount of the catalyst coating falling off on the workpiece to be tested can be effectively detected, so as to accurately calculate the falling-off rate of the catalyst coating.

[0032] Preferably, a pressure stabilizing valve 430 is disposed between the air cavity 410 and the gas source 600. The pressure stabilizing valve 430 is used to control the air pressure of the air cavity 410. In this preferred embodiment, the blowing air volume of the air knife mechanism 400 is controlled through the pressure stabilizing valve 430, so as to ensure the consistency of each detection test and improve the accuracy of detection.

[0033] In a preferred embodiment, as Figure 4 shown, the bracket 300 includes a bottom plate 310. The end of the piston of the cylinder 510 is connected to the bottom plate 310. Sleeves 320 are respectively disposed at the bottom of the bottom plate 310 corresponding to a pair of the slide rails 200. The sleeves 320 are slidably sleeved outside the slide rails 200. One side of the bottom plate 310 away from the sleeves 320 is connected with a supporting assembly.

[0034] In this preferred embodiment, a pair of sleeves 320 are provided on the base plate 310 of the base plate 310, and the sleeves 320 are sleeved outside the slide rail 200, so that the sleeves 320 can slide along the slide rail 200, and at the same time drive the base plate 310 to move along the slide rail 200. In this preferred embodiment, the supporting assembly is provided for supporting the component to be measured, and the component to be measured is fixed on the supporting assembly.

[0035] In a preferred embodiment, the supporting assembly includes a pair of supporting parts 330. A liftable scissors frame is provided between the pair of supporting parts 330 and the base plate 310. One end of the scissors frame is connected to the base plate 310, and the ends of the scissors frame far from the base plate 310 are respectively connected to the bottoms of the pair of supporting parts 330. A supporting surface matching the surface profile of the component to be measured is provided on the side of the supporting part 330 far from the scissors frame.

[0036] In this preferred embodiment, the height of the pair of supporting parts 330 relative to the base plate 310 is adjusted by the liftable scissors frame, and then the height of the supporting parts 330 relative to the air knife mechanism 400 is adjusted according to the height of different components to be measured. In this preferred embodiment, providing a supporting surface on the supporting part 330 that matches the surface profile of the component to be measured can make the component to be measured more stable when placed on the supporting part 330, ensuring the stability of the device operation.

[0037] Preferably, the scissors frame includes a first connecting rod 341 and a second connecting rod 342. The middle of the first connecting rod 341 is hinged to the middle of the second connecting rod 342, and the first connecting rod 341 and the second connecting rod 342 are cross - arranged; an electric push rod is connected between the ends of the first connecting rod 341 and the second connecting rod 342 close to the base plate 310. The electric push rod includes a fixed part 351 and a movable part 352. The fixed part 351 is fixedly connected to the surface of the base plate 310, the fixed part 351 is fixedly connected to the end of the first connecting rod 341, and the movable part 352 is fixedly connected to the end of the second connecting rod 342; the ends of the first connecting rod 341 and the second connecting rod 342 far from the electric push rod are respectively connected to the bottoms of the pair of supporting parts 330.

[0038] In this preferred embodiment, the electric push rod is arranged between the ends on one side of the first connecting rod 341 and the second connecting rod 342. By adjusting the telescopic movement of the electric push rod, the distance between the ends on one side of the first connecting rod 341 and the second connecting rod 342 is adjusted, and further, the distance between the ends on the other side of the first connecting rod 341 and the second connecting rod 342 and the height of the overall scissor lift are adjusted, so as to achieve the purpose of adjusting the distance and height of a pair of supporting parts 330 connected to the ends on the other side of the first connecting rod 341 and the second connecting rod 342. Adjusting the height of the pair of supporting parts 330 is to adapt to the heights of different workpieces to be measured, so that workpieces of different heights can be fully covered and purged by the air knife mechanism 400. Adjusting the distance between the pair of supporting parts 330 is to adapt to the widths of different workpieces to be measured, so that workpieces of different widths can be more fittingly fixed on the pair of supporting parts 330, increasing the working stability of the device.

[0039] As Figure 5 shown in the flowchart of the second embodiment of the present application, it includes the following steps:

[0040] S1. Weigh the test piece to obtain the first mass.

[0041] S2. Place the test piece on the bracket 300, and control the bracket 300 to slide on the slide rail 200 at a set speed for a set time through the control valve 520 and the cylinder 510.

[0042] In this step, by setting an appropriate set speed and set time, the test piece fixed on the bracket 300 can pass through the purging area of the air knife mechanism 400 at an appropriate speed, and thus be fully purged, so as to ensure the accuracy of the test.

[0043] S3. Remove the test piece from the bracket 300 and weigh the test piece to obtain the second mass.

[0044] S4. Calculate the catalyst coating shedding rate from the difference between the first mass and the second mass.

[0045] In this step, the shedding rate of the catalyst coating = (the first mass - the second mass) / the first mass.

[0046] In this text, specific examples are used to elaborate on the principles and implementation manners of this application. The description of the above examples is only used to help understand the method and its core idea of this application. The above is only the preferred implementation manner of this application. It should be noted that due to the limitation of literal expression and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principles of this application, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the application to other occasions without improvement, shall all be regarded as the protection scope of this application.

Claims

1. A catalyst coating shedding rate detection device, characterized in that It includes a detection platform (100). A pair of slide rails (200) are provided on the surface of the detection platform (100). A bracket (300) is arranged on the pair of slide rails (200). An air knife mechanism (400) is vertically arranged on one side of the detection platform (100) corresponding to the bracket (300). A pneumatic driving mechanism for driving the bracket (300) to slide is arranged on the detection platform (100). The air knife mechanism (400) includes an air cavity (410) vertically arranged on one side of the detection platform (100). The air cavity (410) is communicated with an air source (600). A plurality of air outlet holes (420) arranged vertically are evenly provided on the air cavity (410). Each of the air outlet holes (420) is arranged at a set position corresponding to the slide rail (200). A pressure stabilizing valve (430) is arranged between the air cavity (410) and the air source (600). The pressure stabilizing valve (430) is used to control the purging air volume of the air knife mechanism (400).

2. The catalyst coating peeling rate detection device according to claim 1, wherein The pneumatic driving mechanism includes a cylinder (510) connected to the air source (600). The cylinder (510) is arranged between the pair of slide rails (200). The piston telescopic direction of the cylinder (510) is parallel to the extending direction of the slide rail (200). The piston end of the cylinder (510) is connected to the middle of the bracket (300). The two sides of the bracket (300) are respectively slidably clamped on the pair of slide rails (200).

3. The catalyst coating shedding rate detection device according to claim 2, wherein A control valve (520) is arranged between the cylinder (510) and the air source (600). The control valve (520) is used to control the air pressure of the cylinder (510).

4. The catalyst coating peeling rate detection device according to claim 1, characterized in that, The pressure stabilizing valve (430) is used to control the air pressure of the air cavity (410).

5. The catalyst coating peeling rate detection device according to claim 1, characterized in that The bracket (300) includes a bottom plate (310). The piston end of the cylinder (510) is connected to the bottom plate (310). Sleeves (320) are respectively arranged at the bottom of the bottom plate (310) corresponding to the pair of slide rails (200). The sleeves (320) are slidably sleeved on the outer sides of the slide rails (200). A supporting component is connected to one side of the bottom plate (310) away from the sleeves (320).

6. The catalyst coating peeling rate detection device according to claim 5, characterized in that, The supporting component includes a pair of supporting parts (330). A liftable scissors frame is arranged between the pair of supporting parts (330) and the bottom plate (310). One end of the scissors frame is connected to the bottom plate (310). The ends of the scissors frame away from the bottom plate (310) are respectively connected to the bottoms of the pair of supporting parts (330). A supporting surface matching the surface contour of the workpiece to be measured is arranged on one side of the supporting part (330) away from the scissors frame.

7. The catalyst coating peeling rate detection device according to claim 6, wherein The scissors frame includes a first connecting rod (341) and a second connecting rod (342). The middle part of the first connecting rod (341) is hinged to the middle part of the second connecting rod (342), and the first connecting rod (341) and the second connecting rod (342) are arranged in a cross shape; an electric push rod is connected between the ends of the first connecting rod (341) and the second connecting rod (342) on the side close to the bottom plate (310). The electric push rod includes a fixed part (351) and a movable part (352). The fixed part (351) is fixedly connected to the surface of the bottom plate (310), the fixed part (351) is fixedly connected to the end of the first connecting rod (341), and the movable part (352) is fixedly connected to the end of the second connecting rod (342); the ends of the first connecting rod (341) and the second connecting rod (342) far from the electric push rod are respectively connected to the bottoms of a pair of supporting parts (330).

8. A method for detecting the catalyst coating shedding rate using the detection device described in claim 3, characterized in that, Comprising the following steps: Weigh the test piece to obtain a first mass; Place the test piece on the bracket (300), and control the bracket (300) to slide on the slide rail (200) at a set speed for a set time through the control valve (520) and the cylinder (510); Remove the test piece from the bracket (300), weigh the test piece to obtain a second mass; Calculate the catalyst coating shedding rate from the difference between the first mass and the second mass.

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