A flaw detection apparatus for liquid heater processing

Abstract

The application relates to the field of fluorescent flaw detection technology, in particular to a flaw detection equipment for liquid heater processing; the equipment comprises a cylindrical machine case, a rack fixedly connected to the top of the machine case, a concentric flaw detection groove arranged on the front side of the machine case, an annular structure of the flaw detection groove, a plurality of partition plates rotationally connected in the inside of the flaw detection groove, the width of the partition plates being adapted to the thickness of the flaw detection groove, a circular groove arranged on the front side of the machine case, a circular plate rotationally and sealingly connected in the circular groove, and the plurality of partition plates being fixedly connected with the circular plate; in the process of the spiral plate passing through the flaw detection area, the spiral plate rolls by itself and moves axially at the same time, the length direction position of the spiral plate in the flaw detection cavity is changed, the problem that the plate surface of the spiral plate far from the flaw detection camera is shielded by the plate surface close to the flaw detection camera and cannot be detected is avoided, the spiral plate can realize flaw detection without dead angle, and the flaw detection accuracy and precision are improved.

Description

Technical Field

[0001] This invention relates to the field of fluorescent flaw detection technology, specifically a flaw detection device for the processing of liquid heaters. Background Technology

[0002] A liquid heater is a device that heats liquids to a specific temperature. It plays a crucial role in various fields, providing a reliable and effective solution for liquid heating. Typically, during operation, liquid enters a container tube through an inlet pipe and flows downwards along a straight pipe inside the tube. After reaching the bottom of the tube, the liquid flows upwards along the gap between the outer wall of the straight pipe and the inner wall of the container tube. A heating wire inside the tube heats the liquid, causing it to flow out through an outlet pipe. A spiral plate is installed between the outer wall of the straight pipe and the inner wall of the container tube, allowing the fluid flowing from the lower end of the straight pipe to flow upwards along the spiral gap formed by the plate and be heated. This extends the flow path of the fluid within the container tube and improves the heating effect of the liquid heater.

[0003] As a core component of liquid heaters, spiral plates inevitably have defects such as cracks after processing. Therefore, flaw detection is required after processing to meet quality requirements. Fluorescent penetrant testing can quickly, intuitively, and accurately detect defects on the surface of the fittings. The main steps of fluorescent penetrant testing are as follows: First, a fluorescent liquid is applied to the surface of the part to be tested. The fluorescent liquid has strong fluorescence under ultraviolet light and will penetrate along the defects on the surface of the part. Then, the excess fluorescent liquid on the surface of the part is removed, and developing powder is sprinkled on it. The fluorescent liquid at the defect location is absorbed by the developing powder due to capillary action. Under fluorescent light, the defects in the part in the dark room appear bright white. See patent CN119757390B for details on a flaw detection device for liquid heater processing.

[0004] To make surface defects on parts more clearly visible, flaw detection needs to be performed in a dark environment. In darkness, the fluorescence emitted by tiny defects is more easily observed. In bright light, the fluorescence may be masked, hindering accurate defect detection. In continuous flaw detection equipment, the light-shielding curtain needs to be opened during the entry and exit of parts from the inspection chamber. Frequent opening of the curtain affects the accuracy of fluorescence flaw detection for other parts. Furthermore, the flaw detection camera in the equipment has a fixed and divergent beam direction. For parts like spiral plates, flaw detection is required not only on the outer surface but also on the plate surface. If only rolling flaw detection is performed on the spiral plate without axial flaw detection, the portion of the spiral plate near the camera will obstruct the view of the portion farther from the camera, creating blind spots and affecting the accuracy of flaw detection. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a flaw detection device for liquid heater processing. In this invention, as the spiral plate passes through the flaw detection zone, the spiral plate rolls while also moving axially, changing its position along its length within the flaw detection chamber. This avoids the problem of the spiral plate surface away from the flaw detection camera being blocked by the surface closer to the camera, thus enabling the spiral plate to achieve flaw detection without blind spots, thereby improving the accuracy and precision of flaw detection.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A flaw detection device for processing liquid heaters, comprising a cylindrical chassis and a frame fixedly connected to the top of the chassis; a concentric flaw detection groove is provided on the front side of the chassis; the flaw detection groove has an annular structure and multiple partition plates are rotatably connected inside; the width of the partition plates is adapted to the thickness of the flaw detection groove; a circular groove is provided on the front side of the chassis; a circular plate is rotatably and sealingly connected inside the circular groove; multiple partition plates are fixedly connected to the circular plate; a strip-shaped feed hopper is provided on the right side of the top of the chassis; a strip-shaped discharge hopper is provided at the bottom of the chassis; both the feed hopper and the discharge hopper are connected to the flaw detection groove. The flaw detection groove is equipped with a transparent cover embedded in its inner surface. The outer surface of the transparent cover is adapted to the inner surface of the flaw detection groove. A flaw detection camera is fixedly connected inside the transparent cover. Ultraviolet lamps are provided on both sides of the flaw detection camera. The coverage arc of the flaw detection camera and the ultraviolet lamps is smaller than the arc distance between the feed hopper and the discharge hopper. An inner arc plate is fixedly connected to the inner surface of the flaw detection groove. An outer arc plate is fixedly connected to the outer surface of the flaw detection groove. The inner and outer edges of the partition plate are provided with inner arc grooves and outer arc grooves corresponding to the inner and outer arc plates. The arc direction of the inner and outer arc plates is consistent with the movement direction of the partition plate, and the ends do not exceed the feed hopper and the discharge hopper.

[0007] Preferably, the bottom of the flaw detection groove is provided with an annular toothed groove; the area of ​​the flaw detection groove covered by the transparent cover is the flaw detection area; the toothed groove is fixedly connected to the outer inner wall and the upper half of the flaw detection area; the toothed groove is fixedly connected to the inner inner wall and the lower half of the flaw detection area; a transmission groove is provided through both sides of the partition plate; a driven rod and a driving rod are rotatably connected in the transmission groove; a transmission belt is drivenly connected to the outer wall of the driven rod and the driving rod; the end of the driving rod extends into the toothed groove; a gear is fixedly connected to the end of the driving rod; the gear can mesh with the inner tooth or the outer tooth for transmission.

[0008] Preferably, the inner and outer walls of the tooth grooves located away from the flaw detection area are smoothly arranged.

[0009] Preferably, the flaw detection groove is provided with two annular tracks on its outer inner wall; the two annular tracks are located close to each other at the middle section of the flaw detection area and have a curved contraction; multiple track bars are movably connected within the annular tracks; the ends of the track bars extend to the space between two adjacent partition plates.

[0010] Preferably, the inner arc plate and the outer arc plate are disconnected from the corresponding position of the flaw detection groove contraction section.

[0011] Preferably, the feed hopper is slidably connected to two guide plates; the upper half of the two guide plates is in the shape of an inverted V; the guide plates are fixedly connected to the outer wall of the corresponding annular track.

[0012] Preferably, the flaw detection groove has an annular adjustment groove on its outer inner wall; an annular track is movably connected within the two adjustment grooves; an adjustment bolt is rotatably connected to the two annular tracks on opposite sides; the adjustment bolt is threadedly connected to the chassis.

[0013] Preferably, the outer walls of the two corresponding track bars are fixedly connected to an extrusion plate; the contraction section is corrugated.

[0014] Preferably, a shielding plate is fixed to the edge of the partition plate near the adjustment groove; the shielding plate is made of an elastic material.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. In the process of the spiral plate passing through the flaw detection zone, the spiral plate rolls while also moving axially, changing its position along the length of the spiral plate within the flaw detection chamber. This avoids the problem of the spiral plate surface away from the flaw detection camera being blocked by the surface closer to the camera, thus enabling the spiral plate to achieve flaw detection without blind spots and improving the accuracy and precision of flaw detection.

[0017] 2. This invention utilizes the combination of gears and a transmission belt to enable the transmission belt to adapt to changes in the position of the spiral plate, thereby making the transmission of the spiral plate more stable and ensuring the smooth progress of flaw detection.

[0018] 3. In this invention, the spiral plate will enter the disconnected position of the inner arc plate and the outer arc plate, and the track bar will enter the contraction part along its respective annular track. The two track bars will squeeze the two ends of the spiral plate, so that the spiral plate is compressed. The compressed spiral plate will make it easier to expose defects such as cracks, thereby improving the accuracy of flaw detection. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a diagram showing the position of the tooth grooves in this invention;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a perspective view of the present invention without the chassis and rack;

[0024] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 yes Figure 4 Enlarged view of point C in the middle;

[0026] Figure 7 yes Figure 4 Enlarged view at point D;

[0027] Figure 8 This is a perspective view of the partition plate and the circular plate in this invention;

[0028] Figure 9 yes Figure 8 Enlarged view at point E in the middle;

[0029] Figure 10 This is a cross-sectional view of the partition plate in this invention;

[0030] Figure 11 This is a three-dimensional view of the circular track in this invention;

[0031] Figure 12 This is a perspective view of the transparent cover, flaw detection camera, and ultraviolet lamp in this invention;

[0032] Figure 13 This is a cross-sectional view of the present invention;

[0033] Figure 14 This is a perspective view of the spiral plate in the liquid heater of the present invention.

[0034] In the diagram: 1. Chassis; 11. Frame; 12. Flaw detection groove; 121. Flaw detection area; 122. Adjustment groove; 13. Circular groove; 14. Transparent cover; 141. Flaw detection camera; 142. Ultraviolet lamp; 15. Inner arc plate; 16. Outer arc plate; 17. Gear groove; 171. Outer tooth; 172. Inner tooth; 2. Partition plate; 21. Inner arc groove; 22. Outer arc groove; 23. Transmission groove; 24. Driven rod; 25. Drive belt; 26. Gear; 27. Shielding plate; 28. Circular plate; 3. Feed bin; 4. Guide plate; 41. Discharge bin; 5. Circular track; 6. Shrinkage section; 61. Track bar; 62. Adjustment bolt; 63. Extrusion plate; 64. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 14 As shown, the present invention includes the following embodiments:

[0037] Example 1: A flaw detection device for processing liquid heaters includes a cylindrical chassis 1 and a frame 11 fixedly connected to the top of the chassis 1; a concentric flaw detection groove 12 is provided on the front side of the chassis 1; the flaw detection groove 12 has an annular structure and multiple partition plates 2 are rotatably connected inside; the width of the partition plates 2 is adapted to the thickness of the flaw detection groove 12; a circular groove 13 is provided on the front side of the chassis 1; a circular plate 3 is rotatably and sealingly connected inside the circular groove 13; multiple partition plates 2 are fixedly connected to the circular plate 3; a strip-shaped feed hopper 4 is provided on the right side of the top of the chassis 1; a strip-shaped discharge hopper 5 is provided at the bottom of the chassis 1; both the feed hopper 4 and the discharge hopper 5 are connected to the flaw detection groove 12; a transparent material is embedded in the inner surface of the flaw detection groove 12. Cover 14; the outer surface of the transparent cover 14 is adapted to the inner surface of the flaw detection groove 12; a flaw detection camera 141 is fixedly connected inside the transparent cover 14; ultraviolet lamps 142 are provided on both sides of the flaw detection camera 141; the coverage arc of the flaw detection camera 141 and the ultraviolet lamps 142 is smaller than the arc distance between the feed hopper 4 and the discharge hopper 5; an inner arc plate 15 is fixedly connected to the inner surface of the flaw detection groove 12; an outer arc plate 16 is fixedly connected to the outer surface of the flaw detection groove 12; the inner and outer edges of the partition plate 2 are provided with inner arc grooves 21 and outer arc grooves 22 corresponding to the inner arc plate 15 and the outer arc plate 16; the arc direction of the inner arc plate 15 and the outer arc plate 16 is consistent with the movement direction of the partition plate 2, and the ends do not exceed the feed hopper 4 and the discharge hopper 5.

[0038] After the spiral plate is processed, its surface includes the plate face, end face, inner edge, and outer edge. The plate face refers to the surface excluding the end face, inner edge, and outer edge, and it occupies a large portion of the spiral plate's surface. The spiral plate needs to be coated with fluorescent liquid, which will seep into the surface defects. Next, excess fluorescent liquid is removed from the spiral plate surface, and developing powder is sprinkled on top. The fluorescent liquid at the defect locations is drawn out by the developing powder due to capillary action. Then, the spiral plate is fed into the feed hopper 4 of the flaw detection equipment, and the spiral plate will move along the feed... The feed hopper 4 enters the flaw detection groove 12, which is movably connected to multiple partition plates 2. Two adjacent partition plates 2 form a flaw detection chamber. The spiral plate enters the flaw detection chamber. Since the feed hopper 4 is located on the top right of the casing 1, after the spiral plate falls into the flaw detection chamber, it exerts a clockwise thrust on the partition plate 2, causing the spiral plate to move along the annular flaw detection groove 12. The spiral plate moves with the flaw detection chamber, which in turn drives the spiral plate into the area of ​​the inner arc plate 15 and the outer arc plate 16. The cross section 15 is adapted to the cross section of the inner arc groove 21, and the cross section of the outer arc plate 16 is adapted to the cross section of the outer arc groove 22. The area of ​​the flaw detection groove 12 covered by the transparent cover 14 is the flaw detection area 121. Taking the central axis of the chassis 1 as the dividing point, it is divided into the upper half and the lower half of the flaw detection area 121. In the upper half of the flaw detection area 121, the spiral plate will contact the inner surface of the flaw detection groove 12, so the spiral plate will be stuck on the inner arc plate 15. The fluorescent liquid has strong fluorescence under the irradiation of the ultraviolet lamp 142, showing a bright white color. Thus, on the surface of the spiral plate... The appearance of bright white spots on the surface indicates defects or cracks, indicating that the product is unqualified. As the flaw detection chamber moves downward along the upper half of the flaw detection area 121, the flaw detection chamber will cause the spiral plate to roll and rub against the inner surface of the flaw detection groove 12. Under the action of friction, the spiral plate will roll and get stuck on the inner arc plate 15. Therefore, during the rolling process, the spiral plate will move away from the circular plate 3, changing the angle and direction of the spiral plate surface being captured by the flaw detection camera 141, so that more of the spiral plate is recorded by the flaw detection camera 141.After the flaw detection chamber drives the spiral plate into the lower half of the flaw detection area 121, the spiral plate will contact the outer surface of the flaw detection groove 12 and get stuck on the outer arc plate 16. The flaw detection chamber will cause the spiral plate to roll and rub against the outer surface of the flaw detection groove 12. Under the action of friction, the spiral plate will roll. Since the spiral plate is stuck on the outer arc plate 16, it will move closer to the circular plate 3 during the rolling process, changing the angle and direction of the spiral plate surface being captured by the flaw detection camera 141, so that more of the spiral plate surface is captured by the flaw detection camera 141. Thus, as the spiral plate passes through the flaw detection area 121, while rolling, the spiral plate will also move axially, changing the position of the spiral plate in the length direction within the flaw detection chamber, preventing the plate surface of the spiral plate that is far away from the flaw detection camera 141 from being approached for flaw detection. The problem of the camera 141 being unable to detect defects due to obstruction of the plate surface is solved, allowing the spiral plate to achieve defect detection without blind spots, thus improving the accuracy and precision of defect detection. After passing through the defect detection zone 121, the spiral plate enters the defect detection chamber and reaches the position where the defect detection slot 12 connects to the discharge bin 5. The spiral plate then separates from the inner arc plate 15 and outer arc plate 16 and falls out of the discharge bin 5. Because the spiral plate in the defect detection zone 121 is separated by the partition plate 2, external light cannot enter the defect detection zone 121, making the feeding, defect detection, and discharge processes of the spiral plate independent and unaffected. This achieves continuous defect detection while avoiding the influence of light on the detection process. Furthermore, the rotation of the circular plate 3 can also be driven by an independent motor, which is the second driving method. In this embodiment, the entire circular plate 3 is driven to rotate by the gravity of the spiral plate, which is more energy-efficient.

[0039] Example 2: The bottom of the flaw detection groove 12 is provided with an annular toothed groove 17; the area of ​​the flaw detection groove 12 covered by the transparent cover 14 is the flaw detection area 121; the toothed groove 17 is fixedly connected to the outer inner wall and the upper half of the flaw detection area 121 with an external tooth 171; the toothed groove 17 is fixedly connected to the inner inner wall and the lower half of the flaw detection area 121 with an internal tooth 172; the partition plate 2 has a transmission groove 23 running through both sides; the driven rod 24 and the driving rod 25 are rotatably connected in the transmission groove 23; the outer walls of the driven rod 24 and the driving rod 25 are connected to a transmission belt 26; the end of the driving rod 25 extends into the toothed groove 17; the end of the driving rod 25 is fixedly connected to a gear 27; the gear 27 can mesh with the internal tooth 172 or the external tooth 171 for transmission.

[0040] In this embodiment, the inner and outer walls of the tooth groove 17 located away from the flaw detection area 121 are smoothly arranged.

[0041] In the upper part of the flaw detection area 121, the spiral plate approaches the angle formed by the inner surface of the flaw detection groove 12 and the partition plate 2. The spiral plate simultaneously contacts the inner wall of the flaw detection groove 12 and the transmission belt 26 on the partition plate 2. From the front view, the flaw detection chamber rotates clockwise. The spiral plate in the flaw detection chamber rotates clockwise due to friction against the inner wall of the flaw detection groove 12. The partition plate 2 drives the gear 27 to move clockwise within the tooth groove 17. The gear 27 meshes with the external teeth 171 within the tooth groove 17, so the gear 27 rotates counterclockwise. The gear 27 drives the driving rod. 25 rotates counterclockwise. The outer walls of the driving rod 25 and the driven rod 24 can be provided with teeth that mesh with the inner surface of the transmission belt 26, thereby increasing friction and preventing slippage. During the counterclockwise rotation of the driving rod 25, it will drive the transmission belt 26 to rotate counterclockwise. This allows the transmission belt 26 to provide a clockwise frictional force to the spiral plate in the flaw detection chamber. The direction of rotation of the spiral plate due to friction from the transmission belt 26 is the same as the direction of rotation due to friction from the inner surface of the flaw detection groove 12, so that the spiral plate can rotate smoothly in the upper half of the flaw detection area 121.

[0042] In the lower half of the flaw detection area 121, the spiral plate approaches the angle formed by the outer surface of the flaw detection groove 12 and the partition plate 2. The spiral plate simultaneously contacts the inner wall of the flaw detection groove 12 and the transmission belt 26 on the spiral plate. From a frontal view, the flaw detection chamber rotates clockwise, and the spiral plate inside the flaw detection chamber rotates counterclockwise due to friction against the inner wall of the flaw detection groove 12. The partition plate 2 drives the gear 27 to move clockwise within the tooth groove 17. The gear 27 moves from the range of the outer tooth 171 to the range of the inner tooth 172, meshing with the inner tooth 172. Therefore, the gear 27 rotates clockwise, driving the driving rod 25 to rotate clockwise, thus causing the transmission belt 26 to rotate clockwise. The transmission belt 26 provides power to the flaw detection chamber. A counterclockwise frictional force on the spiral plate causes the spiral plate to rotate in the same direction as the friction from the inner surface of the flaw detection groove 12, allowing the spiral plate to rotate smoothly in the lower half of the flaw detection area 121. After the gear 27 moves away from the flaw detection area 121 along the tooth groove 17, the gear 27 disengages from the internal teeth 172. Without the internal teeth 172 or external teeth 171 engaged, the gear 27 will not rotate, reducing the running resistance in the non-flaw detection area 121. In this embodiment, through the cooperation of the gear 27 and the transmission belt 26, the transmission belt 26 can adapt to the change in the position of the spiral plate, thereby making the transmission of the spiral plate more stable and ensuring the smooth progress of flaw detection.

[0043] Example 3: The flaw detection groove 12 is provided with two annular tracks 6 near the outer inner wall; the two annular tracks 6 are located close to each other at the middle section of the flaw detection area 121 with curved contraction parts 61; multiple track rods 62 are movably connected inside the annular tracks 6; the ends of the track rods 62 extend to the space between two adjacent partition plates 2.

[0044] In this embodiment, the inner arc plate 15 and the outer arc plate 16 are disconnected from the corresponding position of the shrinkage part 61 of the flaw detection groove 12.

[0045] Two track bars 62 are located between two adjacent partition plates 2. The two track bars 62 are movably connected within the corresponding annular track 6. Each flaw detection chamber contains two track bars 62. The track bars 62 move along the inner side of the corresponding annular track 6 as the partition plate 2 moves. The flaw detection area 121 is divided into three sections: upper, middle, and lower. The constriction section 61 of the annular track 6 corresponds to the middle section of the flaw detection area 121. The distance between the two annular tracks 6 at other locations is greater than the distance between the constriction sections 61. The distance between the two annular tracks 6 near the feed hopper 4 is relatively large, so the spiral plate to be tested can smoothly enter the flaw detection chamber along the feed hopper 4. In the upper section of the flaw detection area 121, the two track bars 62 within the flaw detection chamber have a large distance, so it does not affect the axial movement of the spiral plate. The flaw detection chamber drives the spiral plate into the flaw detection area 121. After the middle section, the spiral plate will enter the disconnected position of the inner arc plate 15 and the outer arc plate 16. The track bars 62 will enter the contraction section 61 along their respective annular tracks 6. The two track bars 62 will squeeze the two ends of the spiral plate, causing the spiral plate to be compressed. The compressed spiral plate will make it easier to expose defects such as cracks, thus improving the accuracy of flaw detection. The spiral plate will also return to the middle position of the axial direction of the flaw detection groove 12, preparing for the spiral drive of the spiral plate in the lower section of the flaw detection area 121. After the flaw detection chamber enters the lower section of the flaw detection area 121, the track bars 62 will separate from the contraction section 61 along the annular tracks 6. The two track bars 62 in the flaw detection chamber will move away from each other, creating a gap for the spiral drive of the spiral plate. Then the spiral plate will roll and move axially under the action of the outer arc plate 16. After completing the flaw detection, the spiral plate will finally fall down along the discharge bin 5.

[0046] Example 4: The feed hopper 4 is slidably connected to two guide plates 41; the upper half of the two guide plates 41 is in the shape of an inverted V; the guide plates 41 are fixedly connected to the outer wall of the corresponding annular track 6.

[0047] In this embodiment, the flaw detection groove 12 is provided with an annular adjustment groove 122 on the outer inner wall; an annular track 6 is movably connected in the two adjustment grooves 122; the two annular tracks 6 are rotatably connected to the two opposite sides of each other by an adjustment bolt 63; the adjustment bolt 63 is threadedly connected to the housing 1.

[0048] Before using the flaw detection equipment to inspect the spiral plate in the liquid heater, the adjusting bolt 63 is turned to move the corresponding annular track 6 back and forth in the adjusting groove 122. The position of the annular track 6 in the adjusting groove 122 is adjusted, thereby changing the distance between the two annular tracks 6. This allows the annular track 6 to be used for flaw detection of spiral plates of different lengths. In addition, a guide plate 41 is set in the feed hopper 4. The guide plate 41 guides the spiral plate entering the feed hopper 4, so that the spiral plate can be smoothly guided into the flaw detection chamber.

[0049] Example 5: The outer walls of the two corresponding track bars 62 are fixedly connected to the extrusion plate 64, which is close to each other; the contraction part 61 is corrugated.

[0050] During the process of the two corresponding track bars 62 approaching each other and pressing the spiral plate, the outer walls of the two track bars 62 are fixed to the rolling plate, so that the two track bars 62 press the spiral plate through the rolling plate. The contraction part 61 is corrugated and the two corresponding contraction parts 61 are symmetrically arranged. During the process of the track bars 62 passing through the contraction part 61, the two track bars 62 will move closer and further away, so that the spiral plate is compressed and unfolded back and forth, making it easier to expose defects such as cracks on the spiral plate. The two extrusion plates 64 in the same flaw detection chamber are rolled and embedded with balls (not shown in the figure) on one side. The transmission belt 26 has a rough surface. In the middle position of the flaw detection tube 121, the spiral plate only needs to keep compressing and unfolding back and forth, so that defects on the spiral plate are easier to be exposed and detected.

[0051] Example 6: A shielding plate 28 is fixedly connected to the edge of the partition plate 2 near the adjustment groove 122; the shielding plate 28 is made of elastic material.

[0052] The elastic shielding plate 28 extends into the adjustment groove 122. Two annular tracks 6 are provided in the adjustment groove 122. The positions in the adjustment groove 122 where no annular tracks 6 are provided are blocked by the shielding plate 28, thus achieving the purpose of shading. Since the shielding plate 28 is made of elastic material, it can bend with the movement of the annular tracks 6. The areas where no annular tracks 6 are provided are blocked by the shielding plate 28.

[0053] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the present invention, "fixed connection" refers to a fixed connection.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flaw detection device for processing liquid heaters, characterized in that: The device includes a cylindrical chassis and a frame fixedly connected to the top of the chassis; concentric flaw detection grooves are provided on the front side of the chassis; the flaw detection grooves are annular structures and have multiple partition plates rotatably connected inside; the width of the partition plates is adapted to the thickness of the flaw detection grooves; a circular groove is provided on the front side of the chassis; a circular plate is rotatably and sealingly connected inside the circular groove; multiple partition plates are fixedly connected to the circular plate; a strip-shaped feed hopper is provided on the right side of the top of the chassis; a strip-shaped discharge hopper is provided at the bottom of the chassis; both the feed hopper and the discharge hopper are connected to the flaw detection grooves; a transparent cover is embedded in the inner surface of the flaw detection grooves; The outer surface of the transparent cover is adapted to the inner surface of the flaw detection groove; a flaw detection camera is fixedly connected inside the transparent cover; ultraviolet lamps are provided on both sides of the flaw detection camera; the coverage arc of the flaw detection camera and ultraviolet lamps is smaller than the arc distance from the feed hopper to the discharge hopper; an inner arc plate is fixedly connected to the inner surface of the flaw detection groove; an outer arc plate is fixedly connected to the outer surface of the flaw detection groove; the inner and outer edges of the partition plate are provided with inner arc grooves and outer arc grooves corresponding to the inner and outer arc plates; the arc direction of the inner and outer arc plates is consistent with the movement direction of the partition plate, and the ends do not exceed the feed hopper and the discharge hopper.

2. The flaw detection equipment for processing liquid heaters according to claim 1, characterized in that: The bottom of the flaw detection groove is provided with an annular toothed groove; the area of ​​the flaw detection groove covered by the transparent cover is the flaw detection area; the toothed groove is fixedly connected to the outer inner wall and the upper half of the flaw detection area; the toothed groove is fixedly connected to the inner inner wall and the lower half of the flaw detection area; a transmission groove is provided through both sides of the partition plate; a driven rod and a driving rod are rotatably connected in the transmission groove; a transmission belt is drivenly connected to the outer wall of the driven rod and the driving rod; the end of the driving rod extends into the toothed groove; a gear is fixedly connected to the end of the driving rod; the gear can mesh with the inner tooth or the outer tooth for transmission.

3. The flaw detection equipment for processing liquid heaters according to claim 2, characterized in that: The inner and outer walls of the tooth groove, located away from the flaw detection area, are smoothly designed.

4. The flaw detection equipment for processing liquid heaters according to claim 2, characterized in that: The flaw detection groove is provided with two annular tracks on its outer inner wall; the two annular tracks are located close to each other and have a curved contraction section in the middle of the flaw detection area; multiple track bars are movably connected inside the annular tracks; the ends of the track bars extend to the space between two adjacent partition plates.

5. A flaw detection device for processing liquid heaters according to claim 4, characterized in that: The inner arc plate and the outer arc plate are disconnected from the corresponding position of the flaw detection groove contraction section.

6. A flaw detection device for processing liquid heaters according to claim 4, characterized in that: The feeding hopper is slidably connected to two guide plates; the upper half of the two guide plates is in the shape of an inverted V; the guide plates are fixedly connected to the outer wall of the corresponding annular track.

7. A flaw detection device for processing liquid heaters according to claim 6, characterized in that: The flaw detection slot has an annular adjustment groove on its outer inner wall; two annular tracks are movably connected within the two adjustment grooves; the two annular tracks are rotatably connected to an adjustment bolt on opposite sides; the adjustment bolt is threadedly connected to the chassis.

8. A flaw detection device for processing liquid heaters according to claim 4, characterized in that: The outer walls of the two corresponding track bars are fixedly connected to the extrusion plate, which is close to each other; the contraction section is corrugated.

9. A flaw detection device for processing liquid heaters according to claim 4, characterized in that: A shielding plate is fixed to the edge of the partition plate near the adjustment groove; the shielding plate is made of elastic material.

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