Endoscopic flaw detector

Abstract

The present invention provides an endoscope flaw detection instrument, comprising an endoscope host, a display and a flaw detection light arranged on the endoscope host, a connecting assembly connecting the endoscope host with an endoscope probe, and an optical fiber light guide that transmits the flaw detection light of the flaw detection light to the endoscope probe, the endoscope probe comprising an endoscope sleeve and an endoscope, the endoscope being placed in the endoscope sleeve and close to the viewing port of the endoscope sleeve; one end of the optical fiber light guide is connected to the flaw detection light, and the other end of the optical fiber light guide is placed in the endoscope sleeve and extends to the viewing port of the endoscope sleeve. The endoscope flaw detection instrument of the present invention is provided with a display and a flaw detection light on the endoscope host, and the flaw detection light emitted by the flaw detection light is transmitted to the viewing port of the endoscope probe through the optical fiber light guide, and the fluorescent imaging signal at the internal defect of the casting is transmitted to the display through the endoscope and the connecting cable, so that the user can effectively detect the internal defects of the casting intuitively and accurately by observing the display.

Description

Technical Field

[0001] The invention belongs to the field of flaw detection equipment, and more specifically, relates to an endoscopic flaw detection instrument for internal defects of casting parts. Background Art

[0002] Casting inspection is an important means of discovering product defects and a key process to ensure product quality. There are many methods for non-destructive testing of castings, the most commonly used of which are magnetic particle testing, fluorescent testing, ultrasonic testing, and radiographic testing. Fluorescent testing is an effective means of quality control (safety, reliability, and service life of castings). Fluorescent testing is to apply fluorescent liquid on the surface of the casting. The fluorescent liquid has strong fluorescence under ultraviolet light, which can quickly, intuitively, and accurately detect open casting defects on the surface of the casting.

[0003] However, existing fluorescent flaw detectors can usually only detect casting defects on the surface of castings, but still cannot detect defects deep inside the castings. Summary of the invention

[0004] The purpose of the present invention is to provide an endoscopic flaw detector, aiming to solve the problem that the fluorescent flaw detector in the prior art can usually only detect casting defects on the surface of the casting, but still cannot detect internal defects of the casting.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide an endoscope flaw detection instrument, including an endoscope host and a display arranged on the endoscope host; the endoscope flaw detection instrument also includes a flaw detection lamp arranged on the endoscope host, an endoscope probe for viewing internal defects of castings, a connecting component for connecting the endoscope host and the endoscope probe, and at least one optical fiber guide light beam for transmitting the flaw detection light of the flaw detection lamp to the endoscope probe, the endoscope probe includes an endoscope sleeve and an endoscope, one end of the endoscope sleeve has a viewing port, and the endoscope is placed in the endoscope sleeve and close to the viewing port; the connecting component includes a connecting cable, one end of the connecting cable is connected to the display, and the other end of the connecting cable is connected to the endoscope; one end of each of the optical fiber guide light beams is respectively connected to the flaw detection lamp, and the other end of each of the optical fiber guide light beams is respectively placed in the endoscope sleeve and extends to the viewing port.

[0006] Furthermore, the connecting assembly also includes a cannula for inserting the endoscopic probe into the interior of the casting, one end of the cannula is connected to the endoscope host, the other end of the endoscopic sleeve has a connecting port, the other end of the cannula is connected to the connecting port, and the connecting cable and each of the optical fiber light guides are placed in the cannula.

[0007] Furthermore, the endoscope sleeve is provided with two isolation baffles extending along the axial direction of the endoscope sleeve, and the two isolation baffles are arranged in parallel and spaced apart, and the endoscope is installed between the two isolation baffles; both side edges of each isolation baffle are respectively connected to the inner side wall of the endoscope sleeve, and a side surface of each isolation baffle away from the endoscope forms optical fiber grooves distributed on both sides of the endoscope with the inner side wall of the endoscope sleeve, and each optical fiber light guide is respectively accommodated in the corresponding optical fiber groove.

[0008] Furthermore, a lens barrel for installing the endoscope is provided between the two isolation baffles, the endoscope is installed in the lens barrel, and a receiving groove is formed between the outer wall of the lens barrel and a side surface of each isolation baffle close to the endoscope, and at least one lighting lamp is provided in the receiving groove.

[0009] Furthermore, the connecting component also includes a multi-directional bending snake bone arranged between the cannula and the endoscope sleeve, one end of the multi-directional bending snake bone is connected to the other end of the cannula, and the other end of the multi-directional bending snake bone is connected to the connecting port of the endoscope sleeve, and the multi-directional bending snake bone is provided with an inner cavity through which the connecting cable and each of the optical fiber light guides pass along its axial direction, and the connecting cable and each of the optical fiber light guides are placed in the inner cavity.

[0010] Furthermore, the endoscopic flaw detection instrument also includes an infusion tube for conveying flaw detection liquid into the interior of the casting, the infusion tube having a liquid inlet port and a liquid spray port, and one end of the infusion tube having the liquid spray port is placed in the endoscopic sleeve and extends to the viewing port.

[0011] Furthermore, the endoscopic flaw detection instrument also includes a liquid supply system for spraying flaw detection liquid into the interior of the casting, and the liquid supply system includes a spraying device, and the spraying device is connected to the liquid inlet port of the infusion tube.

[0012] Furthermore, the spraying device includes a fluorescent liquid storage tank, a developing liquid storage tank and a liquid supply pump, the input port of the liquid supply pump is connected to the flaw detection liquid storage tank and the developing liquid storage tank respectively, and the output port of the liquid supply pump is connected to the liquid inlet port of the infusion tube.

[0013] Furthermore, the spraying device also includes a cleaning liquid storage tank connected to the input port of the liquid supply pump.

[0014] Furthermore, the endoscopic flaw detector also includes a steering component for adjusting the direction of the endoscopic probe, the steering component includes a rotating sphere rotatably arranged on the endoscope host, a rotating handle for controlling the rotation of the rotating sphere, a plurality of lugs evenly distributed on the circumference of the rotating sphere, and a plurality of traction ropes for pulling the endoscopic probe in a steering direction, the rotating handle is arranged on the top of the rotating sphere, each of the lugs is fixed on the rotating sphere, one end of each of the traction ropes is respectively connected to the corresponding lug, and the other end of each of the traction ropes is respectively connected to the endoscope sleeve, and the endoscope sleeve is rotatably connected to the endoscope host.

[0015] The beneficial effect of the endoscopic flaw detection instrument provided by the present invention is that: compared with the prior art, the endoscopic flaw detection instrument provided by the present invention is provided with a display and a flaw detection lamp on the endoscope host, and the flaw detection light emitted by the flaw detection lamp is transmitted to the viewing port of the endoscope probe through at least one optical fiber light guide, and the flaw detection light transmitted by each optical fiber light guide is used to produce a fluorescent effect on the flaw detection liquid that penetrates the internal defects of the casting, and then the internal defects that produce the fluorescent effect are imaged and detected through the endoscope of the endoscope probe, and the endoscope transmits the detected fluorescent imaging signal to the display through a connecting cable, and the user can observe the image information displayed on the display to conveniently, quickly and accurately perform effective detection of the internal defects of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of the endoscope flaw detector provided by the present invention;

[0018] Figure 2 A partially cutaway schematic diagram of the structure of the endoscope flaw detector provided by the present invention Figure 1 ;

[0019] Figure 3 A partially cutaway schematic diagram of the structure of the endoscope flaw detector provided by the present invention Figure 2 ;

[0020] Figure 4 A schematic diagram of the structure of the endoscope probe provided by the present invention connected to the connecting component Figure 1 ;

[0021] Figure 5 A schematic diagram of the structure of the endoscope probe provided by the present invention connected to the connecting component Figure 2 ;

[0022] Figure 6 A schematic diagram of the structure of an endoscope probe provided by an embodiment of the present invention;

[0023] Figure 7 A schematic cross-sectional structural diagram of an endoscope probe provided in an embodiment of the present invention.

[0024] Among them, the main marks of the drawings in the figure are:

[0025] 1-endoscope host; 11-display; 2-steering component; 21-rotating sphere; 22-rotating handle; 23-lug; 24-traction rope; 25-through hole; 26-limiting flange; 27-limiting hole; 28-limiting groove; 3-flaw detection lamp; 4-endoscopic probe; 41-endoscopic sleeve; 411-visualization port; 42-endoscope; 43-optical fiber groove; 44-lens barrel; 45-accommodation groove; 46-illumination lamp; 47-light-transmitting protective sheet; 5-connecting assembly; 51-connecting cable; 52-cannula; 53-multi-directional bending snake bone; 54-flexible sleeve; 6-optical fiber guide light; 7-isolation baffle; 8-infusion tube; 81-spray port; 9-spraying device; 91-fluorescent liquid storage tank; 92-imaging liquid storage tank; 93-cleaning liquid storage tank. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Please also read Figures 1 to 7 The endoscope flaw detector provided by the present invention is now described. The endoscope flaw detector provided by the present invention comprises an endoscope host 1, a display 11 arranged on the endoscope host 1, a flaw detection lamp 3 arranged on the endoscope host 1, an endoscope probe 4 for inspecting internal defects of a casting, a connecting component 5 for connecting the endoscope host 1 with the endoscope probe 4, and at least one optical fiber light guide 6 for transmitting the flaw detection light of the flaw detection lamp 3 to the endoscope probe 4. The endoscope probe 4 comprises an endoscope sleeve 41 and an endoscope 42. The endoscope sleeve 41 has a One end has a viewing port 411, and the endoscope 42 is placed in the endoscope sleeve 41 and close to the viewing port 411 of the endoscope sleeve 41; the connecting component 5 includes a connecting cable 51, one end of the connecting cable 51 is connected to the display 11, and the other end of the connecting cable 51 is connected to the endoscope 42; one end of each optical fiber light guide 6 is respectively connected to the flaw detection lamp 3, and the other end of each optical fiber light guide 6 is respectively placed in the endoscope sleeve 41 and extends to the viewing port 411 of the endoscope sleeve 41.

[0031] The basic working principle of the endoscopic flaw detector provided by the present invention is as follows: first, the casting to be inspected is placed in a fluorescent liquid tank for immersion, and after the fluorescent liquid fully penetrates into the crack defects inside the casting to be inspected, the excess fluorescent liquid inside the casting to be inspected is removed, and then the fluorescent imaging liquid (powder) is sprayed into the casting to be inspected; secondly, the working power switch of the endoscope host 1 is turned on, and in a dark room, the endoscope probe 4 is placed inside the casting to be inspected for internal flaw detection, and the optical fiber guide light 6 transmits the flaw detection light emitted by the flaw detection lamp 3 set on the endoscope host 1 to the viewing port 411 of the endoscope sleeve 41 of the endoscope probe 4, and then the flaw detection light is transmitted to the endoscope. The fluorescent developer (powder) on the internal defects of the casting will produce a strong fluorescent effect under the irradiation of the flaw detection light; then, the internal defects that produce the fluorescent effect are imaged and inspected through the endoscope 42 placed in the endoscope sleeve 41 and close to the inspection port 411 of the endoscope sleeve 41, and the endoscope 42 transmits the detected fluorescent imaging signal to the display 11 set on the endoscope host 1 through the connecting cable 51; finally, the user can conveniently use the image information displayed on the display 11 to quickly, intuitively and accurately conduct effective detection of cracking defects deep inside the casting.

[0032] Compared with the prior art, the endoscopic flaw detection instrument provided by the present invention is provided with a display 11 and a flaw detection lamp 3 on the endoscope host 1, and the flaw detection light emitted by the flaw detection lamp 3 is transmitted to the viewing port 411 of the endoscope probe 4 through at least one optical fiber light guide 6, and the flaw detection light transmitted by each optical fiber light guide 6 is used to produce a fluorescent effect on the fluorescent imaging liquid (powder) on the internal defects of the casting, and then the internal defects producing the fluorescent effect are imaged and inspected by the endoscope 42 placed in the endoscope sleeve 41, and the endoscope 42 transmits the fluorescent imaging signal detected by the inspection to the display 11 through the connecting cable 51, so that the user can use the image information displayed on the display 11 to conveniently, quickly, intuitively and accurately perform effective detection on defects such as cracks deep inside the casting.

[0033] Preferably, the flaw detection lamp 3 is an ultraviolet flaw detection lamp 3 that emits ultraviolet rays. The fluorescent liquid has strong fluorescence under ultraviolet rays. Under the irradiation of the ultraviolet light emitted by the flaw detection lamp 3, the internal defects of the casting in the dark room appear bright white.

[0034] For further information, please also refer to Figure 4 and Figure 5 As a specific embodiment of the endoscopic flaw detector provided by the present invention, the connecting component 5 also includes a cannula 52 for inserting the endoscopic probe 4 deep inside the casting, one end of the cannula 52 is connected to the endoscope host 1, the other end of the endoscopic sleeve 41 has a connecting port, the other end of the cannula 52 is connected to the connecting port of the endoscopic sleeve 41, and the connecting cable 51 and each optical fiber light guide 6 are placed in the cannula 52.

[0035] In this embodiment, a cannula 52 is provided on the endoscope host 1 for facilitating the insertion of the endoscopic probe 4 into the deep interior of the casting or into the narrow and deep gaps of the casting, and the connecting cable 51 and each optical fiber guide beam 6 are housed in the cannula 52, so as to facilitate the user to quickly and efficiently detect defects such as cracks deep inside the casting or in the narrow and deep gaps of the casting.

[0036] For further information, please also refer to Figure 6 and Figure 7 As a specific embodiment of the endoscope flaw detector provided by the present invention, two isolation baffles 7 extending along the axial direction of the endoscope sleeve 41 are provided in the endoscope sleeve 41, and the two isolation baffles 7 are arranged in parallel and spaced apart, and the endoscope 42 is installed between the two isolation baffles 7; the two side edges of each isolation baffle 7 are respectively connected to the inner side wall of the endoscope sleeve 41, and the sides of each isolation baffle 7 away from the endoscope 42 are respectively formed with the inner side wall of the endoscope sleeve 41 to form optical fiber grooves 43 distributed on both sides of the endoscope 42, and each optical fiber light guide 6 is respectively accommodated in the corresponding optical fiber groove 43.

[0037] In this embodiment, two isolation baffles 7 extending along the axial direction of the endoscope sleeve 41 are provided in the endoscope sleeve 41, and the two baffles arranged in parallel and spaced apart form optical fiber grooves 43 with the inner side walls of the endoscope sleeve 41, and each optical fiber light guide 6 is respectively accommodated in the corresponding optical fiber groove 43, and the endoscope 42 is installed between the two isolation baffles 7. Under the isolation and shielding effect of the two isolation baffles 7 and the lens barrel 44, the flaw detection light beams transmitted by each optical fiber light guide 6 will not leak and be projected to the lens of the endoscope 42 to affect the imaging effect, thereby improving the accuracy of the flaw detection of the flaw detection light beam of the endoscope flaw detector.

[0038] In this embodiment, the optical fiber grooves 43 formed between each isolation baffle 7 and the inner wall of the endoscope sleeve 41 are symmetrically distributed on both sides of the endoscope 42, so that the flaw detection light of the endoscope probe 4 is more uniform, and will not cause uneven brightness such as local light being brighter and local light being darker, thereby enhancing the imaging effect of the flaw detection light irradiating the fluorescent liquid at the internal defects of the casting, and improving the accuracy of the flaw detection of the flaw detection light of the endoscope flaw detector.

[0039] For further information, please also refer to Figure 6 As a specific embodiment of the endoscopic flaw detector provided by the present invention, the cross-section of each optical fiber groove 43 is arc-shaped, which saves more space. Without affecting the cross-sectional area of ​​each optical fiber light guide 6 for transmitting the flaw detection light, the diameter of the endoscope sleeve 41 of the optical fiber probe can be reduced, thereby making it easier to place the endoscope probe 4 in the narrow and deep gap space inside the casting for flaw detection.

[0040] For further information, please also refer to Figure 6 and Figure 7 As a specific implementation of the endoscopic flaw detector provided by the present invention, a lens barrel 44 for installing an endoscope 42 is arranged between the two isolation baffles 7, and the endoscope 42 is installed in the lens barrel 44. An accommodating groove 45 is formed between the outer wall of the lens barrel 44, the inner wall of the endoscope sleeve 41 and the side surfaces of the two isolation baffles 7 close to the endoscope 42, and at least one lighting lamp 46 is arranged in the accommodating groove 45.

[0041] Preferably, the lighting lamp 46 adopts an energy-efficient LED (Light-Emitting Diode), and other types of lighting sources for lighting may also be adopted, which are selected according to actual needs and are not limited here.

[0042] In this embodiment, a barrel 44 for installing an endoscope 42 is provided between two mutually parallel and spaced baffles, so that the endoscope 42 is isolated and placed in the barrel 44, and a receiving groove 45 is formed between the outer wall of the barrel 44, the inner wall of the endoscope sleeve 41 and the two isolation baffles 7, and a lighting lamp 46 for providing lighting and inspection inside the casting is installed in the receiving groove 45, and the lighting lamp 46 is used to illuminate the deep and dark space inside the casting, so as to quickly find the target position that needs to be inspected. In this embodiment, the illumination, inspection light inspection and imaging of the endoscope probe 4 are integrated, which is particularly suitable for the inspection and detection of defects in the narrow and deep space inside the casting, which is convenient and practical.

[0043] In this embodiment, the endoscope 42 is installed in the lens barrel 44, so that the lens barrel 44 forms an isolation cover for the lens of the endoscope 42 to prevent the lens of the endoscope 42 from being contaminated during the process of flaw detection inside the casting, affecting the imaging quality and effect, thereby improving the accuracy of the flaw detection of the endoscope flaw detector using the flaw detection light.

[0044] For further information, please also refer to Figure 7 As a specific embodiment of the endoscope flaw detector provided by the present invention, a light-transmitting protective sheet 47 for protecting the lens of the endoscope 42 is provided in a port of the lens barrel 44 close to the lens of the endoscope 42, so as to protect the lens of the endoscope 42 and prevent the lens of the endoscope 42 from being contaminated.

[0045] For further information, please also refer to Figure 5 As a specific embodiment of the endoscopic flaw detector provided by the present invention, the connecting component 5 also includes a multi-directional curved snake bone 53 arranged between the cannula 52 and the endoscope sleeve 41, one end of the multi-directional curved snake bone 53 is connected to the other end of the cannula 52, and the other end of the multi-directional curved snake bone 53 is connected to the other end of the endoscope sleeve 41. The multi-directional curved snake bone 53 is axially penetrated by an inner cavity for the connecting cable 51 and each optical fiber light guide 6 to pass through, and the connecting cable 51 and each optical fiber light guide 6 are placed in the inner cavity.

[0046] In this embodiment, a multi-directional bending snake bone is provided between the cannula 52 and the endoscope sleeve 41, so that the endoscope probe 4 can be bent quickly and smoothly according to the internal conditions. The endoscope probe can also be bent in different directions and at different angles as needed to adapt to the flaw detection of different castings under different working conditions. It is especially suitable for the flaw detection of irregular narrow spaces or curved channel defects inside castings, thereby enhancing the versatility of the flaw detection of the endoscope flaw detector.

[0047] Preferably, a flexible sleeve 54 is mounted on the multi-directional bending snake bone 53 to protect the multi-directional bending snake bone 53 and prevent the multi-directional bending snake bone 53 from being worn during the flaw detection inside the casting.

[0048] For further information, please also refer to Figure 3 and Figure 5 As a specific embodiment of the endoscopic flaw detector provided by the present invention, the endoscopic flaw detector also includes an infusion tube 8 for conveying flaw detection liquid into the interior of the casting, the infusion tube 8 has a liquid inlet port and a liquid spray port 81, and one end of the infusion tube 8 with the liquid spray port 81 is placed in the endoscope sleeve 41 and extends to the viewing port 411 of the endoscope sleeve 41.

[0049] In this embodiment, the endoscope flaw detector is provided with an infusion tube 8 for conveniently conveying the flaw detection liquid into the casting, and the infusion tube 8 is integrated into the endoscope sleeve 41 of the endoscope probe 4, so that the user can conveniently convey the flaw detection liquid into the casting and improve the flaw detection efficiency. Moreover, the optical fiber light guides 6, the endoscope 42, the lighting lamp 46 and the infusion tube 8 for transmitting the flaw detection light are integrated into the endoscope sleeve 41 of the endoscope probe 4, so that the illumination, delivery of the flaw detection liquid, flaw detection by flaw detection light and imaging of the endoscope probe 4 are realized in one, which is convenient and practical.

[0050] For further information, please also refer to Figure 3 As a specific embodiment of the endoscopic flaw detector provided by the present invention, the endoscopic flaw detector also includes a liquid supply system for spraying the flaw detection liquid into the casting, and the liquid supply system includes a spraying device 9, and the spraying device 9 is connected to the liquid inlet port of the liquid infusion tube 8. In this embodiment, the spraying device 9 of the liquid supply system automatically sprays the flaw detection liquid into the casting through the liquid infusion tube 8, thereby improving the flaw detection efficiency, reducing the labor intensity of the user's flaw detection work, and having a high degree of automation.

[0051] For further information, please also refer to Figure 3 As a specific embodiment of the endoscopic flaw detector provided by the present invention, the spraying device 9 includes a fluorescent liquid storage tank 91, an imaging liquid storage tank 92 and a liquid supply pump (not shown in the figure), the input port of the liquid supply pump (not shown in the figure) is respectively connected to the fluorescent liquid storage tank 91 and the imaging liquid storage tank 92, and the output port of the liquid supply pump (not shown in the figure) is connected to the liquid inlet port of the infusion tube 8.

[0052] In this embodiment, the liquid supply pump (not shown in the figure) automatically sprays the fluorescent liquid in the fluorescent liquid storage tank 91 and the developer in the developer storage tank 92 into the interior of the casting through the infusion tube 8, thereby improving the flaw detection efficiency, reducing the labor intensity of the user's flaw detection work, and having a high degree of automation.

[0053] For further information, please also refer to Figure 3As a specific embodiment of the endoscopic flaw detector provided by the present invention, the spraying device 9 also includes a cleaning liquid storage tank 93 connected to the input port of the liquid supply pump (not shown in the figure). In this embodiment, the spraying device 9 automatically controls the fluorescent liquid storage tank 91, the imaging liquid storage tank 92 and the cleaning liquid storage tank 93 according to the needs of flaw detection, completes the cleaning of the inside of the casting, sprays the fluorescent liquid and the imaging liquid, is easy to operate and control, has a high degree of automation, and has strong versatility.

[0054] Furthermore, as a specific embodiment of the endoscopic flaw detector provided by the present invention, the spray port 81 of the infusion tube 8 is installed with a nozzle (not shown in the figure) to quickly and evenly spray the flaw detection liquid onto the internal defects of the casting, thereby improving the flaw detection efficiency and improving the flaw detection liquid spraying effect.

[0055] Preferably, the liquid supply system adopts a portable micro-spraying system, which is convenient for users to carry. The portable micro-spraying system includes a spraying device 9 specially designed for ultraviolet fluorescent flaw detection endoscopes. The spraying device 9 can be fixed on the operator's belt to facilitate on-site flaw detection. The spraying device 9 is built with fluorescent liquid, cleaning liquid, imaging liquid, power management module, pump body, etc. The portable micro-spraying system uses a power switch and a liquid spraying selection key to control the working mode of the spraying device 9 through a control module. The power switch controls the on and off of the spraying device 9, and the liquid spraying selection key cyclically controls which liquid (any one of the fluorescent liquid, cleaning liquid, and imaging liquid) is selected. When the spraying device 9 sprays which liquid (any one of the fluorescent liquid, cleaning liquid, and imaging liquid), the corresponding liquid light will prompt. The infusion tube 8 passes through the cannula 52 until it reaches the end face (viewing port 411) of the endoscope probe 4, and the liquid is sprayed from the spraying port on the end face of the endoscope probe 4 and sprayed on the object to be detected.

[0056] For further information, please also refer to Figure 1 and Figure 2 As a specific embodiment of the endoscope flaw detector provided by the present invention, the endoscope flaw detector also includes a steering component 2 for adjusting the direction of the endoscope probe 4, the steering component 2 includes a rotating sphere 21 rotatably arranged on the endoscope host 1, a rotating handle 22 for controlling the lateral rotation of the rotating sphere 21, a plurality of lugs 23 evenly distributed on the axial direction of the rotating sphere 21, and a plurality of traction ropes 24 for pulling the endoscope probe 4 to turn, the rotating handle 22 is arranged on the top of the rotating sphere 21, and each lug 23 is fixed on the rotating sphere 21; one end of each traction rope 24 is respectively connected to the corresponding lug 23, and the other end of each traction rope 24 is respectively connected to the endoscope sleeve 41 of the endoscope probe 4, and the endoscope sleeve 41 is rotatably connected to the endoscope host 1 and is located directly below the rotating sphere 21.

[0057] In this embodiment, a steering component 2 for adjusting the steering of the endoscopic probe 4 is provided on the endoscope host 1. The rotating handle 22 on the top of the rotating sphere 21 is manually rotated, and the rotating handle 22 drives the rotating sphere 21 to rotate on the endoscope host 1. During the rotation of the rotating sphere 21, the rotating lugs 23 are driven to rotate along the rotation direction of the rotating sphere 21. During the rotation, each lug 23 provides traction to the corresponding traction rope 23. Under the action of the traction force, each traction rope 23 drives the endoscope sleeve 41 to rotate, thereby realizing 360° all-round rotation and infinite steering of the endoscope sleeve 41 at the front end of the cannula controlled by the endoscope sleeve 41, so as to adapt to the endoscope flaw detector to adjust the orientation of the endoscope probe 4 in the small corners of the narrow channel or narrow gap inside the casting, so as to achieve the purpose of quickly and accurately detecting defects in the corners of the narrow space inside the casting.

[0058] For further information, please also refer to Figure 2 As a specific embodiment of the endoscopic flaw detector provided by the present invention, each lug 23 is provided with a through hole 25 for fixedly connecting each traction rope 24, and each lug 23 is provided with a limiting groove 28 for limiting the traction rope 24 on the lug 23 at a position corresponding to the through hole 25.

[0059] In this embodiment, a through hole 25 and a limiting groove 28 corresponding to the through hole 25 are opened on each lug 23, so as to fix each traction rope 24 to the lug 23 and confine each lug 23 in the limiting groove of each lug 23 to prevent each traction rope 24 from slipping on the lug 23 and affecting the accuracy of the azimuth adjustment of the endoscopic sleeve of the endoscopic probe 4 controlled by the rotating sphere 21.

[0060] For further information, please also refer to Figure 2 As a specific embodiment of the endoscopic flaw detector provided by the present invention, a limiting flange 26 is arranged between the rotating sphere 21 and the endoscopic sleeve 41, and limiting holes 27 are respectively arranged at positions corresponding to each lug 23 on the limiting flange 26, and the other ends of each traction rope 24 respectively pass through the other ends of the corresponding traction ropes 24 and are connected to the endoscopic sleeve 41 of the endoscopic probe 4.

[0061] In the present embodiment, when the lugs 23 on the rotating sphere 21 rotate and pull the corresponding traction ropes 23, the corresponding traction ropes 23 are limited by the limiting holes 27 on the limiting flange 26 to prevent the traction ropes 24 from swinging, thereby improving the accuracy of the azimuth adjustment of the endoscopic sleeve of the endoscopic probe 4 controlled by the rotating sphere 21, thereby enabling the endoscopic probe 4 to quickly and accurately detect defects in the corners of the narrow space inside the casting.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An endoscope flaw detector, comprising an endoscope host and a display arranged on the endoscope host; characterized in that: The endoscope flaw detector also includes a flaw detection lamp arranged on the endoscope host, an endoscope probe for detecting internal defects of the casting, a connection component for connecting the endoscope host and the endoscope probe, and at least one optical fiber guide light beam for transmitting the flaw detection light of the flaw detection lamp to the endoscope probe, the endoscope probe includes an endoscope sleeve and an endoscope, one end of the endoscope sleeve has a viewing port, the endoscope is placed in the endoscope sleeve and close to the viewing port; the connection component includes a connecting cable, one end of the connecting cable is connected to the display, and the other end of the connecting cable is connected to the endoscope; one end of each optical fiber guide light beam is respectively connected to the flaw detection lamp, and the other end of each optical fiber guide light beam is respectively placed in the endoscope sleeve and extends to the viewing port; The endoscope flaw detector also includes a steering component for adjusting the direction of the endoscope probe, the steering component includes a rotating sphere rotatably arranged on the endoscope host, a rotating handle for controlling the rotation of the rotating sphere, a plurality of lugs evenly distributed on the circumference of the rotating sphere, and a plurality of traction ropes for pulling the endoscope probe in a directional manner, the rotating handle is arranged on the top of the rotating sphere, each of the lugs is fixed on the rotating sphere, one end of each of the traction ropes is respectively connected to the corresponding lug, and the other end of each of the traction ropes is respectively connected to the endoscope sleeve, and the endoscope sleeve is rotatably connected to the endoscope host.

2. The endoscope flaw detector according to claim 1, characterized in that: The connection assembly also includes a cannula for inserting the endoscopic probe into the casting, one end of the cannula is connected to the endoscope host, the other end of the endoscopic sleeve has a connection port, the other end of the cannula is connected to the connection port, and the connecting cable and each of the optical fiber light guides are placed in the cannula.

3. The endoscope flaw detector according to claim 2, characterized in that: The endoscope sleeve is provided with two isolation baffles extending in the axial direction of the endoscope sleeve, and the two isolation baffles are arranged in parallel and spaced apart, and the endoscope is installed between the two isolation baffles; the two side edges of each isolation baffle are respectively connected to the inner side wall of the endoscope sleeve, and the side surface of each isolation baffle away from the endoscope forms optical fiber grooves distributed on both sides of the endoscope with the inner side wall of the endoscope sleeve, and each optical fiber light guide is respectively accommodated in the corresponding optical fiber groove.

4. The endoscope flaw detector according to claim 3, characterized in that: A lens barrel for installing the endoscope is arranged between the two isolation baffles, and the endoscope is installed in the lens barrel. A receiving groove is formed between the outer wall of the lens barrel and a side surface of each isolation baffle close to the endoscope, and at least one lighting lamp is arranged in the receiving groove.

5. The endoscope flaw detector according to claim 2, characterized in that: The connecting assembly also includes a multi-directional bending snake bone arranged between the cannula and the endoscopic sleeve, one end of the multi-directional bending snake bone is connected to the other end of the cannula, and the other end of the multi-directional bending snake bone is connected to the connecting port of the endoscopic sleeve. The multi-directional bending snake bone is provided with an inner cavity along its axial direction for the connecting cable and each of the optical fiber light guides to pass through, and the connecting cable and each of the optical fiber light guides are placed in the inner cavity.

6. The endoscope flaw detector according to claim 1, characterized in that: The endoscopic flaw detector also includes an infusion tube for conveying flaw detection liquid into the casting, wherein the infusion tube has a liquid inlet port and a liquid spray port, and one end of the infusion tube having the liquid spray port is placed in the endoscopic sleeve and extends to the viewing port.

7. The endoscope flaw detector according to claim 6, characterized in that: The endoscopic flaw detection instrument also includes a liquid supply system for spraying flaw detection liquid into the interior of the casting, and the liquid supply system includes a spraying device, and the spraying device is connected to the liquid inlet port.

8. The endoscope flaw detector according to claim 7, characterized in that: The spraying device comprises a fluorescent liquid storage tank, a developing liquid storage tank and a liquid supply pump, wherein the input port of the liquid supply pump is respectively connected to the flaw detection liquid storage tank and the developing liquid storage tank, and the output port of the liquid supply pump is connected to the liquid inlet port of the infusion tube.

9. The endoscope flaw detector according to claim 8, characterized in that: The spraying device also includes a cleaning liquid storage tank connected to the input port of the liquid supply pump.

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