Device and method for detecting performance of inner container of electric water heater

Abstract

The invention belongs to the technical field of electric water heater inner container performance detection, and particularly relates to electric water heater inner container performance detection equipment which comprises a base, a clamping mechanism used for vertically positioning a water heater inner container is arranged on the base, and a scanning detector is further arranged above the base. The scanning detector is connected with a driving mechanism used for driving the scanning detector to scan the inner container of the water heater according to a preset path, and the base is further provided with a sliding mechanism used for controlling the driving mechanism to move to give way when the clamping mechanism discharges materials. The driving mechanism comprises a telescopic rotating assembly connected with the sliding mechanism, and an insertion pipe capable of rotating around the axis of the insertion pipe is connected to the telescopic rotating assembly. The inner wall of the water heater inner container is scanned and detected in a sectional mode, dead-corner-free scanning of the inner wall of the water heater inner container is achieved, the problem that detection operation is difficult due to space view limitation of the curved surface positions of the upper end and the lower end is effectively solved, and meanwhile the problem that scanning omission is likely to happen through manual operation is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of performance detection of inner tank of electric water heater, and particularly relates to a performance detection device and method for inner tank of electric water heater. BACKGROUND

[0002] As a common hot water supply device in family, the corrosion resistance of the inner tank of the electric water heater directly determines the service life and safety of the product. The corrosion-resistant coating coated on the inner wall of the inner tank is the key barrier to resist water erosion, and whether the coating has a missing coating point becomes a core factor affecting the corrosion resistance of the inner tank. Therefore, accurate detection of the missing coating point is an important link in the production process of the electric water heater.

[0003] At present, the industry generally adopts the mode of manually holding an electric spark detector probe to move and scan inside the inner tank to complete the missing coating point detection. However, this detection mode has significant limitations: manual operation is difficult to achieve comprehensive coverage scanning of the inner wall of the tank body, and it is easy to form a missed scanning area due to differences in operation method and scanning path; especially at the curved surface parts of the upper and lower ends of the inner tank, due to the restriction of factors such as narrow internal space and limited field of view, the detection probe is difficult to fit the curved surface for stable scanning, not only the operation difficulty is great, but also the risk of missing detection is greatly increased, which hides the quality of the inner tank.

[0004] In order to solve the drawbacks of manual detection, the prior art attempts to introduce a mechanical hand to replace manual operation to complete the scanning detection work. However, the mechanical hand scheme has the problem of high cost, and the purchase, installation and later maintenance all need to invest a lot of funds, which significantly increases the cost burden of the production enterprise; at the same time, the debugging and daily maintenance of the mechanical hand require high professional skills of the operator, and need to be equipped with special technical personnel for management, the operation process is complex and tedious, and it is difficult to popularize and apply in small and medium-sized production enterprises, so there is an urgent need for an electric water heater inner tank performance detection device with appropriate cost, simple operation and comprehensive detection. SUMMARY

[0005] In order to solve the above problems, the present application provides an electric water heater inner tank performance detection device and method for solving the problems mentioned in the background art.

[0006] In order to achieve the above object, the embodiment of the present application provides the following technical scheme: the present application provides a kind of electric water heater liner performance detection equipment, including base, the clamping mechanism for the vertical positioning of water heater liner is provided on the base, scanning detector is also provided on the upper side of the base, scanning detector is connected with the drive mechanism for driving scanning detector to carry out scanning to water heater liner according to predetermined path, sliding mechanism for controlling drive mechanism to move and give way when clamping mechanism discharges is also provided on the base.The drive mechanism includes telescopic rotating component connected with sliding mechanism, telescopic rotating component is connected with the pipe that can rotate around its own axis, the lower end of pipe is connected with the spring telescopic frame of adjustable length by angle adjusting component, camera is fixedly arranged on spring telescopic frame, spring telescopic frame is connected with connecting seat, the side away from spring telescopic frame of connecting seat is fixedly connected with scanning detector, and position-adjustable guide frame is also provided on the connecting seat.Scanning detector moves along the vertical section of water heater by telescopic rotating component and when moving to end surface area, spring telescopic frame on scanning detector cooperates with angle adjusting component, drives scanning detector to rotate relative to pipe and scans from the curved surface inner wall of water heater.

[0007] According to advantageous embodiments, the clamping mechanism includes a bearing table fixedly arranged on the upper side of the base and circular, and a centering fixing assembly for centering and fixing the water heater liner is fixedly arranged on the bearing table.

[0008] According to advantageous embodiments, the upper side of the bearing table is rotatably provided with a plurality of uniformly distributed support balls to support the water heater liner and reduce the friction between the water heater liner and the bearing table during centering adjustment.

[0009] According to advantageous embodiments, the centering drive assembly includes a plurality of support rods fixedly arranged on the circumferential side of the bearing table, and a ring plate is fixedly connected between the plurality of support rods. Three electric push rods are fixedly arranged on the ring plate in a circumferential direction, and an output shaft of the electric push rod is movably penetrated through the side wall of the ring plate and fixedly provided with a centering push plate.

[0010] According to advantageous embodiments, the telescopic rotating component includes an electric push rod two connected with the sliding mechanism, an electric motor one is fixedly connected to the upper end of the electric push rod two through a connecting plate, and an output shaft of the electric motor one is movably penetrated through the connecting plate and fixedly connected with the pipe through a connecting frame.

[0011] According to an advantageous embodiment, the angle adjusting assembly comprises an adjusting screw one rotatably arranged inside the insertion tube, the lower end of the adjusting screw one is threadedly connected with a driving seat, the driving seat is slidably arranged inside the insertion tube, the lower side of the driving seat is fixedly connected with a rack, the lower end of the insertion tube is provided with a notch groove, the position of the lower end of the insertion tube close to the notch groove is rotatably arranged with a gear through a rotating shaft, a part of the gear extends to the inside of the insertion tube through the notch groove and is engaged with the rack, the connecting frame is fixedly provided with a motor two, the output shaft of the motor two is movably penetrated through the upper end of the insertion tube and extends to the inside thereof and is fixedly connected with the upper end of the adjusting screw one.

[0012] According to an advantageous embodiment, the spring telescopic frame comprises a telescopic plate fixedly connected with the gear and adjustable in length, the camera is arranged on the telescopic plate, the end of the telescopic plate away from the gear is fixedly connected with a spring telescopic rod, the movable end of the spring telescopic rod is fixedly connected with the connecting seat.

[0013] According to an advantageous embodiment, the guide frame comprises a sliding plate slidably arranged on the surface of the connecting seat, the side of the sliding plate away from the spring telescopic frame is fixedly provided with two front and back symmetrical inclined support plates, the side of the two inclined support plates away from the sliding plate is rotatably arranged with a guide ball, the surface of the connecting seat is rotatably arranged with an adjusting screw two through an ear seat, the adjusting screw two is threadedly connected with the sliding plate.

[0014] According to an advantageous embodiment, the sliding mechanism comprises a driving screw rotatably arranged on the upper side of the base, the driving screw is threadedly connected with a sliding seat, the upper side of the sliding seat is fixedly connected with the second electric push rod, the base is further fixedly provided with a motor three, the output shaft of the motor three is fixedly connected with one end of the driving screw.

[0015] In addition, the scheme also provides a kind of electric water heater liner performance detection method, using above-mentioned one kind of electric water heater liner performance detection equipment is completed in cooperation, it include the following steps: S1, discharging, insertion tube is removed from the upper of clamping mechanism by sliding mechanism, then hot water tank is vertically placed on clamping mechanism and insertion tube is reset by artificial or external machine.

[0016] S2, centering and fixing, hot water tank is fixed in specified position by clamping mechanism, so that the axis of hot water tank is aligned with the axis of insertion tube.

[0017] S3, scanning detection is carried out to hot water tank, insertion tube is inserted into hot water tank by telescopic rotating assembly, and the inner wall of hot water tank is fully scanned and detected by telescopic rotating assembly in cooperation with angle adjusting assembly.

[0018] S4, discharging, after detection, insertion tube is extracted from hot water tank by telescopic rotating assembly and is removed from the upper of hot water tank by sliding mechanism, and then hot water tank is taken out from clamping mechanism.

[0019] Compared with the prior art, the electric water heater liner performance detection device and method provided by the embodiment of the present application has the following beneficial effects: 1. In the present application, the telescopic rotating assembly and the angle adjusting assembly cooperate to control the movement of the scanning detector probe along the predetermined path. The scanning detector probe is first controlled to rotate and adjust different scanning areas by the telescopic rotating assembly, and a scanning overlap area is reserved to cover the vertical section of the water heater liner for scanning. At the same time, the scanning detector probe is controlled to rotate and adaptively extend along the curved section of the water heater liner by cooperation of the angle spring telescopic frame, the angle adjusting assembly and the telescopic rotating assembly, so that the inner wall of the water heater liner is scanned in a segmented manner, the inner wall of the water heater liner is scanned without dead angle, the problem of difficult detection operation of the upper and lower curved surface positions due to space visual field limitation is effectively solved, and the problem of easy missed scanning caused by manual operation is avoided.

[0020] 2. In the present application, the device adopts conventional mechanical components such as electric push rod one, motor one and adjusting screw one, and the overall structure is simple and compact. Compared with the complex mechanical hand, the purchase cost and later maintenance cost are significantly reduced, and the cost burden of the production enterprise is effectively reduced. At the same time, the device debugging only needs to focus on the basic parameters such as telescopic length and rotation angle, and the skill requirement of the operator is low, which is convenient for quick start and daily operation and maintenance. While realizing automatic detection, the defects of high cost, complex maintenance and debugging and difficult popularization in small and medium-sized enterprises of the existing mechanical hand scheme are overcome. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an overall three-dimensional structure diagram of the present application.

[0022] Figure 2 It is a front view cross-sectional three-dimensional structure diagram of the present application.

[0023] Figure 3 It is a front view cross-sectional plane structure diagram of the present application.

[0024] Figure 4 It is an external three-dimensional structure diagram of the driving mechanism in the present application.

[0025] Figure 5 It is an external three-dimensional structure diagram of the angle adjusting assembly and the spring telescopic frame in the present application.

[0026] Figure 6 It is a front view cross-sectional plane structure diagram of the angle adjusting assembly and the spring telescopic frame in the present application.

[0027] Figure 7 It is a state diagram when the scanning detector scans the vertical section of the water heater liner in the present application.

[0028] Figure 8 It is a state diagram when the scanning detector scans the curved section above the water heater liner in the present application.

[0029] Figure 9 This is a schematic diagram showing the state of the scanning detector scanning the curved section below the inner tank of the water heater in this invention.

[0030] Figure reference numerals: 1. Base; 2. Clamping mechanism; 21. Support platform; 22. Centering fixing assembly; 221. Support rod; 222. Ring plate; 223. Electric actuator one; 224. Centering push plate; 3. Scanning detector; 4. Drive mechanism; 41. Telescopic rotation assembly; 411. Electric actuator two; 412. Motor one; 413. Connecting frame; 42. Insertion tube; 43. Angle adjustment assembly; 431. Adjusting screw one; 4 32. Drive base; 433. Rack; 434. Gear; 435. Motor II; 44. Spring telescopic frame; 441. Telescopic plate; 442. Spring telescopic rod; 45. Connecting seat; 46. Guide frame; 461. Slide plate; 462. Diagonal brace plate; 463. Guide ball; 464. Adjusting screw II; 5. Sliding mechanism; 51. Drive screw; 52. Slide seat; 53. Motor III; 6. Camera; 7. Water heater inner tank. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will be described in further detail.

[0032] Please refer to the following: Figure 1 and Figure 2 A performance testing device for the inner tank of an electric water heater is disclosed, used to detect any missing coating on the anti-corrosion coating of the inner wall of the inner tank 7. The testing device includes a base 1, on which a clamping mechanism 2 is mounted for vertical positioning of the inner tank 7. A scanning detector 3 is mounted above the base 1, and a drive mechanism 4 is connected to the scanning detector 3 to drive it to scan the inner tank 7 along a predetermined path. A sliding mechanism 5 is also provided on the base 1 to control the movement of the drive mechanism 4 and allow it to move aside when the clamping mechanism 2 releases material. The inner tank 7 is centered and fixed in a designated position by the clamping mechanism 2. The sliding mechanism 5 and the drive mechanism 4 work together to insert the scanning detector 3 into the inner tank 7 and control the probe of the scanning detector 3 to move along the inner wall of the inner tank 7 along a predetermined path. An alarm is triggered when a missing coating point is detected. In this design, the scanning detector 3 is an electric spark detector, and the probe is a flat, brush-shaped part with a certain degree of flexibility and deformation. The specific model of the electric spark tester should be selected based on the actual water heater inner tank 7 being tested.

[0033] See Figures 1-3The clamping mechanism 2 includes a circular support platform 21 fixedly mounted on the upper side of the base 1. A centering and fixing assembly 22 for centering and fixing the inner tank 7 of the water heater is fixedly mounted on the support platform 21. Multiple evenly distributed support balls are rotatably mounted on the upper side of the support platform 21 to support the inner tank 7 of the water heater and reduce friction when it slides relative to the support platform 21 during centering adjustment. The centering drive assembly includes multiple support rods 221 fixedly mounted on the periphery of the support platform 21. A ring plate 222 is fixedly connected to the multiple support rods 221. Three evenly distributed electric push rods 223 are fixedly mounted on the ring plate 222 along its circumference. The output shaft of each electric push rod 223 movably passes through the side wall of the ring plate 222 and is fixedly mounted with a centering push plate 224.

[0034] In practice, initially, the initial spacing of the three centering push plates 224 is adjusted according to the diameter of the inner tank 7 of the water heater to be tested. This ensures that when the inner tank 7 is vertically inserted into the ring plate 222, the three centering push plates 224 can initially limit the inner tank 7, preventing it from tilting excessively. During the centering and fixing of the water heater, the three centering push plates 224 move together towards the center under the drive of their respective electric push rods 223, gradually centering the inner tank 7. The lower end face of the inner tank 7 slides through the support balls until the inner tank 7 remains centered and perpendicular to the support platform 21.

[0035] See Figure 1 and Figures 3-5 The drive mechanism 4 includes a telescopic rotating assembly 41 connected to the sliding mechanism 5. A rotatable tube 42 is connected to the telescopic rotating assembly 41. The lower end of the tube 42 is connected to an adjustable-length spring telescopic frame 44 via an angle adjustment assembly 43. A camera 6 is fixedly mounted on the spring telescopic frame 44, and a connecting seat 45 is connected to it. The side of the connecting seat 45 away from the spring telescopic frame 44 is fixedly connected to the scanning detector 3, and the connecting seat 45 also has an adjustable-position guide frame 46. The camera 6 in this solution is a small camera 6, synchronously equipped with a corresponding display end, used to understand the internal condition of the water heater inner tank 7, facilitating equipment debugging.

[0036] In practical operation, the scanning detector 3 in this solution is an electric spark detector, and the specific model of the electric spark detector is selected according to the actual water heater inner tank 7 being tested. The sliding mechanism 5 drives the insertion tube 42 to move and maintain center alignment with the fixed water heater inner tank 7. The telescopic rotation component 41 can drive the insertion tube 42 and the scanning detector 3 to move up and down. The angle adjustment component 43 can rotate the spring telescopic frame 44 and the scanning detector 3 together relative to the insertion tube 42. The spring telescopic frame 44 can be compressed when the guide frame 46 is under pressure.

[0037] The specific scanning principle is as follows: the sliding mechanism 5 moves the insertion tube 42 to directly above the inner tank 7 of the water heater. Then, the telescopic rotating assembly 41 drives the insertion tube 42 and the scanning detector 3 into the inner tank 7. At this time, the spring telescopic frame 44 is in a folded state. After the lower end of the insertion tube 42 enters a certain depth inside the inner tank 7, the angle adjustment assembly 43 controls the spring telescopic frame 44 to rotate and unfold, so that the guide frame 46 and the probe of the scanning detector 3 are in contact with the inner wall of the inner tank 7. Figure 3 As shown.

[0038] During scanning, firstly, when scanning the inner wall of the vertical section of the water heater's inner tank 7, the probe of the scanning detector 3 moves to the middle of the vertical section of the water heater's inner tank 7. Then, through the telescopic rotating assembly 41, the probe of the scanning detector 3 moves up and down along the vertical section of the water heater's inner tank 7 to perform scanning and detection. Figure 7 As shown. After a single position movement is completed, the telescopic rotating component 41 can also drive the insertion tube 42 to rotate, thereby changing the scanning area of ​​the scanning detector 3 probe in the vertical direction. This controls the scanning detector 3 probe to repeatedly move up and down to scan and detect different areas of the vertical section of the water heater inner tank 7. This cycle can complete the scanning of the vertical section of the water heater inner tank 7. Furthermore, the scanning area of ​​the scanning detector 3 probe after the change overlaps with the previous scanning area, avoiding missed areas.

[0039] The scanning and detection of the curved section above the inner wall of the water heater inner tank 7 is performed as follows: First, the probe of the scanning instrument 3 is moved to the junction position between the vertical section and the upper curved section of the inner wall of the water heater inner tank 7 by the telescopic rotation component 41. Then, the probe of the scanning instrument 3 is controlled to rotate clockwise by the angle adjustment component 43. Under the guidance of the guide frame 46, the probe of the scanning instrument 3 moves from the vertical section of the inner wall of the water heater inner tank 7 towards the upper curved section. At the same time, the telescopic rotation component 41 also drives the spring telescopic frame 44 to move up and down, so that the spring telescopic frame 44 adaptively extends and retracts, ensuring that the scanning instrument 3 is always in contact with the curved section of the inner wall of the water heater inner tank 7. Figure 8As shown. Until the probe of the scanning detector 3 rotates to the upper port position of the water heater inner tank 7, the guide frame 46 loses the support of the inner wall of the water heater inner tank 7 and naturally extends from the upper port position of the water heater inner tank 7 under the action of the spring telescopic frame 44. Then, the angle adjustment component 43 further drives the probe of the scanning detector 3 to rotate clockwise, causing the spring telescopic frame 44 to fold completely. Then, the telescopic rotation component 41 drives the scanning detector 3 to move down, re-entering the interior of the water heater inner tank 7 and moving back to the initial position. At this point, one scan from the vertical section of the inner wall of the water heater inner tank 7 to the upper curved section is completed. Then, the telescopic rotation component 41 controls the insertion tube 42 to drive the scanning detector 3 to rotate a certain angle, adjusting the scanning area of ​​the scanning detector 3 probe, and ensuring that the area scanned on the next side partially overlaps with the area scanned previously. The above operation is repeated to complete the scanning and detection of all positions on the upper curved section of the water heater inner tank 7.

[0040] The method described above can be repeated on the lower curved section of the inner wall of the water heater's inner tank 7 to complete the scanning and detection of all positions on the inner wall of the water heater's inner tank 7. Figure 9 As shown.

[0041] See Figures 1-3 The telescopic rotating assembly 41 includes a second electric actuator 411 connected to the sliding mechanism 5. The upper end of the second electric actuator 411 is fixedly connected to a first motor 412 via a connecting plate. The output shaft of the first motor 412 movably passes through the connecting plate and is fixedly connected to the insertion tube 42 via a connecting bracket 413. The telescopic extension of the second electric actuator 411 can drive the insertion tube 42 and the scanning detector 3 to move up and down, adjusting the vertical position of the scanning detector 3. Simultaneously, the first motor 412 can drive the insertion tube 42 to rotate, thereby adjusting the horizontal position of the scanning detector 3.

[0042] See Figures 2-6 In order to control the scanning detector 3 to scan and detect the curved section of the inner tank 7 of the water heater, the angle adjustment component 43 includes an adjustment screw 431 rotatably disposed inside the insertion tube 42. The lower end of the adjustment screw 431 is threadedly connected to a drive seat 432. The drive seat 432 is slidably disposed inside the insertion tube 42. A rack 433 is fixedly connected to the lower side of the drive seat 432. A notch is opened at the lower end of the insertion tube 42. A gear 434 is rotatably disposed at the lower end of the insertion tube 42 near the notch via a rotating shaft. A part of the gear 434 passes through the notch and extends into the insertion tube 42 and meshes with the rack 433. A motor 435 is fixedly disposed on the connecting bracket 413. The output shaft of the motor 435 movably passes through the upper end of the insertion tube 42 and extends into it, and is fixedly connected to the upper end of the adjustment screw 431. The motor 435 drives the adjusting screw 431 to rotate, which in turn moves the drive seat 432, causing the rack 433 to move up and down and cooperate with the gear 434 to rotate the spring telescopic frame 44 to adjust the angle.

[0043] See 2. Figure 4 and Figure 5 The spring telescopic frame 44 includes a telescopic plate 441 with adjustable length, fixedly connected to the gear 434. A spring telescopic rod 442 is fixedly connected to the end of the telescopic plate 441 away from the gear 434, and the movable end of the spring telescopic rod 442 is fixedly connected to the connecting seat 45. The telescopic plate 441 consists of two interlocking long strips, fixedly connected by bolts and nuts. One long strip is fixedly connected to the gear 434, and the camera 6 is fixedly mounted on this long strip. The other long strip is fixedly connected to the spring telescopic rod 442. Initially, the maximum distance of the guide frame 46 when perpendicular to the insertion pipe 42 is controlled by adjusting the length of the telescopic plate 441, ensuring that the guide frame 46 can contact the inner wall of the water heater inner tank 7 and has a certain amount of telescopic space.

[0044] It should be noted that, in addition to using camera 6 to record the electrical sparks, a high frame rate CMOS sensor or an infrared imaging sensor can also be used.

[0045] See Figure 2 as well as Figures 4-6 The guide frame 46 includes a slide plate 461 slidably fitted onto the surface of the connecting seat 45. Two symmetrically arranged diagonal braces 462 are fixedly mounted on the side of the slide plate 461 away from the spring telescopic frame 44. Guide balls 463 are rotatably mounted on the side of the two diagonal braces 462 away from the slide plate 461. An adjusting screw 464 is rotatably mounted on the surface of the connecting seat 45 via an ear seat. The adjusting screw 464 is threadedly connected to the slide plate 461. An adjusting knob is fixedly mounted on one end of the adjusting screw 464. Rotating the adjusting knob causes the adjusting screw 464 to rotate, controlling the slide plate 461 to move the diagonal braces 462 relative to the connecting seat 45, thus adjusting the relative position of the guide balls 463 and the probe of the scanning detector 3. The tip of the scanning detector 3 probe always protrudes beyond the guide ball 463, ensuring that when the two diagonal braces 462 on the guide frame 46 move against the inner wall of the water heater tank 7 via the guide ball 463, the tip of the scanning detector 3 probe will always contact the inner wall of the water heater tank 7. By having the guide ball 463 conform to the inner wall of the tank, it ensures that the scanning detector 3 probe always points towards the inner wall and avoids excessive contact between the scanning detector 3 probe and the inner wall of the water heater tank 7.

[0046] See Figure 1 and Figure 2The sliding mechanism 5 includes a drive screw 51 rotatably mounted on the upper side of the base 1, a slide block 52 threadedly connected to the drive screw 51, a guide rod for guiding the slide block 52 between the base 1 and the slide block 52, a pulley on the lower side of the slide block 52 for sliding on the base 1, and an electric push rod 411 fixedly connected to the upper side of the slide block 52. A motor 53 is also fixedly mounted on the base 1, and the output shaft of the motor 53 is fixedly connected to one end of the drive screw 51. The motor 53 controls the rotation of the drive screw 51, causing the slide block 52 to move, which in turn moves the electric push rod 411 and the corresponding insert 42, allowing the insert 42 to be positioned for easy feeding, and ensuring that the insert 42 aligns with the fixed inner tank 7 of the water heater after resetting.

[0047] The telescopic rotation component 41, in conjunction with the angle adjustment component 43, controls the scanning detector 3 to enter the inner tank 7 of the water heater. The probe of the scanning detector 3 moves along a predetermined path. By controlling the up and down movement of the probe of the scanning detector 3, and simultaneously rotating to adjust different scans and reserving a scan overlap area, it covers the vertical section of the inner tank 7 of the water heater for scanning. At the same time, through the cooperation of the angle spring telescopic frame 44, the angle adjustment component 43, and the telescopic rotation component 41, the probe of the scanning detector 3 is controlled to rotate and adaptively telescopically move along the curved surface section of the inner tank 7 of the water heater for scanning. The inner wall of the inner tank 7 of the water heater is scanned in segments, realizing a scan of the inner wall of the inner tank 7 of the water heater without dead angles. This effectively solves the problem of difficult operation due to the limited field of vision at the upper and lower curved surfaces, and avoids the problem of missed scans that are easy to occur during manual operation.

[0048] Furthermore, the main components of the equipment in this solution are conventional mechanical parts such as the electric actuator-223, the motor-412, and the adjusting screw-431. The overall structure is simple and compact, significantly reducing purchase and maintenance costs compared to complex robotic arms, effectively alleviating the cost burden on manufacturing enterprises. At the same time, equipment debugging only requires focusing on basic parameters such as extension length and rotation angle, requiring lower skill levels from operators, facilitating quick learning and daily maintenance. While achieving automated detection, it overcomes the shortcomings of existing robotic arm solutions, such as high cost, complex maintenance and debugging, and difficulty in widespread adoption by small and medium-sized enterprises.

[0049] In addition, this solution also provides a method for testing the performance of the inner tank 7 of an electric water heater, which is completed in conjunction with the aforementioned device for testing the performance of the inner tank 7 of an electric water heater. The method includes the following steps: S1, feeding the material, using motor 3 53 to control the slide 52 to drive the electric push rod 2 411 to move, moving the insertion tube 42 away from the support platform 21, and then using manual labor or an external machine to vertically place the inner tank 7 of the water heater on the support platform 21 and reset the insertion tube 42.

[0050] S2. Centering and fixing: Through the cooperation of three electric push rods 223 and their respective centering push plates 224, the inner tank 7 of the water heater is pushed to slide and be aligned from multiple directions, and finally the inner tank 7 of the water heater is fixed in the center of the support platform 21, so that the axis of the inner tank 7 of the water heater is aligned with the axis of the insertion pipe 42.

[0051] S3. Scan and inspect the inner tank 7 of the water heater. Insert the insertion tube 42 into the inner tank 7 of the water heater through the telescopic rotation component 41. First, the telescopic rotation component 41, in conjunction with the angle adjustment component 43, performs a comprehensive scan and inspection of the inner wall of the vertical section of the inner tank 7 of the water heater.

[0052] Then, the telescopic rotation component 41, together with the angle adjustment component 43, scans and detects the inner wall of the curved section above the inner tank 7 of the water heater.

[0053] Secondly, the telescopic rotation component 41, together with the angle adjustment component 43, scans and detects the inner wall of the curved section below the inner tank 7 of the water heater.

[0054] S4. After the material is unloaded and the inspection is completed, the telescopic rotating component 41 drives the insertion tube 42 to be pulled out from the inner tank 7 of the water heater. Then, the insertion tube 42 is moved away from the support platform 21 again through the slide 52. The centering push plate 224 is reset to release the fixation of the inner tank 7 of the water heater. Then, the inner tank 7 of the water heater is removed from the support platform 21.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 limitations on this invention.

[0056] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the performance of an electric water heater inner tank, comprising a base, characterized in that: The base is provided with a clamping mechanism for vertically positioning the inner tank of the water heater. A scanning detector is also provided above the base. The scanning detector is connected to a driving mechanism for driving the scanning detector to scan the inner tank of the water heater along a predetermined path. The base is also provided with a sliding mechanism for controlling the movement of the driving mechanism to make way for the clamping mechanism when it releases material. The driving mechanism includes a telescopic rotating assembly connected to a sliding mechanism. The telescopic rotating assembly is connected to an insertion tube that can rotate around its own axis. The lower end of the insertion tube is connected to a length-adjustable spring telescopic frame through an angle adjustment assembly. A camera is fixedly installed on the spring telescopic frame. A connecting seat is connected to the spring telescopic frame. The side of the connecting seat away from the spring telescopic frame is fixedly connected to a scanning detector. The connecting seat is also provided with a position-adjustable guide frame. The scanning detector moves along the vertical section of the water heater's inner tank via a telescopic rotating assembly. When it reaches the curved surface area at the end, the spring telescopic frame on the scanning detector works in conjunction with the angle adjustment assembly to drive the scanning detector to rotate relative to the insertion tube and sweep across the inner wall of the curved surface of the water heater's inner tank.

2. The electric water heater inner tank performance testing device according to claim 1, characterized in that, The clamping mechanism includes a circular support platform fixedly mounted on the upper side of the base, and an alignment and fixing component for aligning and fixing the inner tank of the water heater is fixedly mounted on the support platform.

3. The electric water heater inner tank performance testing device according to claim 2, characterized in that, The upper side of the support platform is rotatably equipped with multiple evenly distributed support balls to support the inner tank of the water heater and reduce the friction between the inner tank and the support platform during centering adjustment.

4. The electric water heater inner tank performance testing device according to claim 2, characterized in that, The centering drive assembly includes multiple support rods fixedly disposed on the periphery of the support platform. A ring plate is fixedly connected to the multiple support rods. Three electric actuators are evenly distributed on the ring plate along its circumference. The output shaft of the electric actuator 1 movably passes through the side wall of the ring plate and is fixedly disposed on a centering push plate.

5. The electric water heater inner tank performance testing device according to claim 1, characterized in that, The telescopic rotation assembly includes an electric actuator 2 connected to a sliding mechanism. The upper end of the electric actuator 2 is fixedly connected to a motor 1 via a connecting plate. The output shaft of the motor 1 movably passes through the connecting plate and is fixedly connected to the insertion tube via a connecting frame.

6. The electric water heater inner tank performance testing device according to claim 5, characterized in that, The angle adjustment assembly includes an adjusting screw 1 rotatably disposed inside the insertion tube. The lower end of the adjusting screw 1 is threadedly connected to a drive seat, which is slidably disposed inside the insertion tube. A rack is fixedly connected to the lower side of the drive seat. A notch is provided at the lower end of the insertion tube. A gear is rotatably disposed at the lower end of the insertion tube near the notch via a rotating shaft. A portion of the gear passes through the notch and extends into the insertion tube, meshing with the rack. A motor 2 is fixedly disposed on the connecting frame. The output shaft of the motor 2 movably passes through the upper end of the insertion tube and extends into its interior, where it is fixedly connected to the upper end of the adjusting screw 1.

7. The electric water heater inner tank performance testing device according to claim 6, characterized in that, The spring telescopic frame includes a telescopic plate that is fixedly connected to the gear and has an adjustable length. The camera is mounted on the telescopic plate. A spring telescopic rod is fixedly connected to the end of the telescopic plate away from the gear. The movable end of the spring telescopic rod is fixedly connected to the connecting seat.

8. The electric water heater inner tank performance testing device according to claim 1, characterized in that, The guide frame includes a slide plate that is slidably sleeved on the surface of the connecting seat. Two symmetrical diagonal braces are fixedly installed on the side of the slide plate away from the spring telescopic frame. Guide balls are rotatably installed on the side of the two diagonal braces away from the slide plate. An adjusting screw is rotatably installed on the surface of the connecting seat through an ear seat. The adjusting screw is threadedly connected to the slide plate.

9. The electric water heater inner tank performance testing device according to claim 5, characterized in that, The sliding mechanism includes a drive screw rotatably mounted on the upper side of the base, a slide block threaded onto the drive screw, an upper side of the slide block fixedly connected to an electric push rod two, and a motor three fixedly mounted on the base, the output shaft of the motor three being fixedly connected to one end of the drive screw.

10. A method for testing the performance of the inner tank of an electric water heater, characterized in that, The test is performed using the electric water heater inner tank performance testing equipment as described in claim 1, and includes the following steps: S1. Discharge: The insert tube is moved away from the clamping mechanism by the sliding mechanism, and then the inner tank of the water heater is placed vertically on the clamping mechanism by manual labor or external machine and the insert tube is reset. S2. Centering and fixing: The water heater inner tank is centered and fixed in a designated position by the clamping mechanism, so that the axis of the water heater inner tank is aligned with the axis of the insertion pipe. S3. Scan and inspect the inner tank of the water heater. Insert the tube into the inner tank of the water heater through the telescopic and rotating assembly. The telescopic and rotating assembly, together with the angle adjustment assembly, performs a comprehensive scan and inspection of the inner wall of the inner tank of the water heater. S4. After the material is unloaded and the inspection is completed, the telescopic rotating component drives the insertion tube to be pulled out from the inner tank of the water heater and moves it away from the top of the inner tank of the water heater through the sliding mechanism, and then the inner tank of the water heater is removed from the clamping mechanism.

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