High-precision fluorescent magnetic particle flaw detector

Abstract

The utility model provides a high-precision fluorescent magnetic powder flaw detector, which belongs to the field of fluorescent magnetic powder flaw detection and comprises a base, a flaw detection device body is mounted on the base, a collecting tank is arranged on the base, a liquid storage tank is arranged on the base, and the collecting tank is communicated with the liquid storage tank through a connector. A spraying assembly and a sealing assembly are installed on the base. Magnetic suspension is pumped out through the infusion pump and sprayed out through the spraying head, redundant magnetic suspension can be collected through the collecting tank, the magnetic suspension can be filtered through the filter screen, equipment blockage caused by impurity accumulation is avoided, the service life of the magnetic suspension is prolonged, the movable sealing plate can cover a pipe opening of the connecting pipe, and therefore the magnetic suspension is prevented from being blocked. Impurities such as dust, metal chippings and water in the environment can be prevented from being mixed, pollution of the magnetic suspension is prevented, stability of the magnetic suspension is maintained, flaw detection sensitivity is ensured, a user can conveniently mount and dismount the fixing frame, the user can conveniently clean the filter screen, and portability is improved.

Description

Technical Field

[0001] This utility model relates to the field of fluorescent magnetic particle flaw detection technology, and in particular to a high-precision fluorescent magnetic particle flaw detector. Background Technology

[0002] Fluorescent magnetic particle flaw detectors are non-destructive testing equipment specifically designed to detect defects such as cracks and pores on or near the surface of ferromagnetic materials. They are widely used in the quality control of key components in fields such as machinery manufacturing, rail transportation, and aerospace.

[0003] A high-precision fluorescent magnetic particle flaw detector, application number CN202221611908.2, includes a body, sleeves movably connected on both sides inside the body, a hanging rod movably connected between the sleeves, and flaw detection components fixedly installed on both sides inside the body. A reduction motor is installed on the left side of the body, and an inclined plate is installed inside the body. The bottom surface of the inclined plate is connected to a liquid outlet pipe, a valve is connected to the middle part of the liquid outlet pipe, and a magnetic suspension liquid assembly is connected to the bottom of the liquid outlet pipe. This utility model uses a pump body and a suction pipe to draw magnetic suspension liquid into an input pipe. The input pipe continuously pours magnetic suspension liquid into the body until the magnetic suspension liquid completely soaks the workpiece to be tested, so that the outer surface of the workpiece is uniformly adhered with magnetic suspension liquid, avoiding uneven adhesion of magnetic suspension liquid on the outer surface of the workpiece, which helps to ensure the accuracy of the test. At the same time, by opening the valve, the magnetic suspension liquid flows back from the liquid outlet pipe to the magnetic suspension liquid tank, allowing the magnetic suspension liquid to be recycled. However, directly recycling the magnetic suspension may introduce impurities, which could clog the device and affect the lifespan of the magnetic suspension. Furthermore, the lack of sealing in the magnetic suspension tank can lead to contamination of the magnetic suspension. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-precision fluorescent magnetic particle flaw detector.

[0005] This utility model provides a high-precision fluorescent magnetic particle flaw detector, comprising: a base, a flaw detector body mounted on the base, a collection groove and a liquid storage tank on the base, the collection groove and the liquid storage tank being connected by a connection port, a spray assembly and a sealing assembly mounted on the base, the spray assembly including a fixed frame slidingly penetrating the base, a filter screen fixedly mounted on the inner wall of the fixed frame, a movable cavity on the base, a spring fixedly connected to the inner wall of the movable cavity, and a movable plate slidably connected within the movable cavity. A locking block is fixedly connected and slides through the base. The moving plate is fixedly connected to the spring. A slot is opened on the side wall of the fixed frame, and the locking block matches the slot. A toggle groove is opened on the inner wall of the moving cavity, and a toggle rod is slidably connected in the toggle groove. The toggle rod is fixedly connected to the moving plate. A liquid pump is fixedly installed on the side wall of the base. The liquid pump's liquid pump end is connected to a liquid storage tank. A support frame is fixedly connected to the upper end face of the base. An infusion pipe is installed on the support frame. Multiple spray heads are installed on the infusion pipe, and the infusion pipe is connected to the liquid pump's outlet end.

[0006] Furthermore, the sealing assembly includes a sliding cavity and a rotating cavity disposed on the base. A threaded rod is rotatably connected to the inner wall of the sliding cavity, and a sliding plate is slidably connected inside the sliding cavity. The threaded rod is threaded through the sliding plate, and a sealing plate is fixedly connected to the sliding plate. The sealing plate slidably passes through the base, and the sealing plate matches the inner wall of the connection port. A first bevel gear and a second bevel gear are rotatably connected to the inner wall of the rotating cavity. The first bevel gear and the second bevel gear mesh with each other, and the first bevel gear is fixedly connected to the threaded rod. A rotating rod rotatably passes through the base, and the rotating rod is fixedly connected to the second bevel gear.

[0007] Furthermore, the base is connected to an injection pipe and a drain pipe, both of which are equipped with valves. Both the injection pipe and the drain pipe are connected to a liquid storage tank, and each of the multiple spray heads is equipped with a solenoid valve.

[0008] Furthermore, a handle is fixedly connected to the fixed frame, and a toggle block is fixedly connected to the toggle lever.

[0009] Furthermore, a handle is fixedly connected to the rotating rod, and the handle is provided with an anti-slip pad layer.

[0010] Furthermore, the lower end face of the base is provided with anti-slip texture, and multiple connecting brackets are fixedly connected to the support frame, with the infusion tube fixedly connected to the multiple connecting brackets.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The pump draws out the magnetic suspension and sprays it out through the spray head. At the same time, the flaw detection device magnetizes the magnetic suspension on the workpiece to be tested. After spraying, the excess magnetic suspension will be collected in the collection tank, and the filter screen will filter the magnetic suspension to avoid the accumulation of impurities that may cause equipment blockage and extend the service life of the magnetic suspension.

[0013] 2. When the magnetic suspension is stored in the storage tank, the user rotates the handle to cover the opening of the connecting pipe with the sealing plate. This prevents impurities such as dust, metal shavings, and moisture from entering the magnetic suspension, thus preventing contamination, maintaining the stability of the magnetic suspension, and ensuring the sensitivity of the flaw detection.

[0014] 3. Furthermore, the fixing frame is secured using clips and slots, making it easy for users to install and remove. This also facilitates cleaning the filter and enhances the portability of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a high-precision fluorescent magnetic particle flaw detector as described in an embodiment of this utility model.

[0016] Figure 2 This is a three-dimensional sectional view of the structure of a high-precision fluorescent magnetic particle flaw detector as described in this embodiment of the utility model.

[0017] Figure 3 This is a three-dimensional sectional view of a high-precision fluorescent magnetic particle flaw detector as described in an embodiment of this utility model.

[0018] Figure 4 This is a three-dimensional sectional view of the moving cavity structure of a high-precision fluorescent magnetic particle flaw detector as described in this embodiment of the present invention.

[0019] In the above figures: 1 base, 2 flaw detection device body, 3 collection tank, 4 liquid storage tank, 5 fixed frame, 6 filter screen, 7 moving cavity, 8 spring, 9 locking block, 10 sliding cavity, 11 rotating cavity, 12 threaded rod, 13 sealing plate, 14 first bevel gear, 15 second bevel gear, 16 liquid pump, 17 support frame, 18 connecting frame. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-4As shown, a high-precision fluorescent magnetic particle flaw detector includes: a base 1, on which a liquid injection pipe and a drain pipe are connected, and valves are installed on both the liquid injection pipe and the drain pipe. Both the liquid injection pipe and the drain pipe are connected to a liquid storage tank 4. Solenoid valves are installed on multiple spray heads. The solenoid valves can individually control the liquid output of the spray heads, thereby improving the practicality of the device. A flaw detector body 2 is installed on the base 1. The flaw detector body 2 is existing technology and mainly consists of a clamping device, a magnetizing device, an ultraviolet light source, and a control device. Its core principle is that the clamping device clamps and fixes the object to be tested, and then the magnetizing device applies a magnetic field to the workpiece, causing the magnetic lines of force inside the workpiece to be distorted at the defect to form a leakage magnetic field. This causes the magnetic particles in the magnetic suspension to be attracted by the leakage magnetic field and accumulate at the defect. After being excited by ultraviolet light, fluorescent traces appear, thereby intuitively revealing the location and shape of the defect. Further details are omitted here.

[0022] A collection tank 3 and a liquid storage tank 4 are provided on the base 1. The collection tank 3 and the liquid storage tank 4 are connected by a connection port. A spray assembly and a sealing assembly are installed on the base 1. The spray assembly includes a fixed frame 5 that slides through the base 1. A filter screen 6 is fixedly installed on the inner wall of the fixed frame 5. A movable cavity 7 is provided on the base 1. A spring 8 is fixedly connected to the inner wall of the movable cavity 7. A movable plate is slidably connected in the movable cavity 7. A locking block 9 is fixedly connected to the movable plate. The locking block 9 is wedge-shaped and slides through the base 1. The movable plate is fixedly connected to the spring 8. A slot is provided on the side wall of the fixed frame 5. The locking block 9 matches the slot. A toggle groove is provided on the inner wall of the movable cavity 7.

[0023] A toggle lever is slidably connected in the toggle slot. The toggle lever is fixedly connected to the moving plate. A liquid pump 16 is fixedly installed on the side wall of the base 1. The liquid pump 16's liquid pump end is connected to the liquid storage tank 4. A support frame 17 is fixedly connected to the upper end face of the base 1. An infusion pipe is installed on the support frame 17. Multiple spray heads are installed on the infusion pipe. The infusion pipe is connected to the liquid pump 16's liquid outlet end. The lower end face of the base 1 is provided with anti-slip texture to improve the stability of the device. Multiple connecting frames 18 are fixedly connected to the support frame 17. The infusion pipe is fixedly connected to the multiple connecting frames 18 to improve the stability of the infusion pipe. A handle is fixedly connected to the fixed frame 5 to facilitate the user to pull the fixed frame 5. A toggle block is fixedly connected to the toggle lever to facilitate the user toggle the toggle lever and improve the device's portability.

[0024] The sealing assembly includes a sliding cavity 10 and a rotating cavity 11 disposed on the base 1. A threaded rod 12 is rotatably connected to the inner wall of the sliding cavity 10. A sliding plate is slidably connected inside the sliding cavity 10. The threaded rod 12 is threaded through the sliding plate. A sealing plate 13 is fixedly connected to the sliding plate. The sealing plate 13 slidably passes through the base 1. The sealing plate 13 matches the inner wall of the connection port. A first bevel gear 14 and a second bevel gear 15 are rotatably connected to the inner wall of the rotating cavity 11. The first bevel gear 14 and the second bevel gear 15 mesh with each other. The first bevel gear 14 is fixedly connected to the threaded rod 12. A rotating rod is rotatably passed through the base 1. The rotating rod is fixedly connected to the second bevel gear 15. A handle is fixedly connected to the rotating rod. The handle is provided with an anti-slip pad to facilitate the user's rotation of the rotating rod and improve portability.

[0025] This invention fixes the object to be tested onto the flaw detection device body 2. Then, by rotating the handle, the threaded rod 12 rotates under the transmission of the first bevel gear 14 and the second bevel gear 15, causing the sealing plate 13 to slide, thus exposing the connecting pipe opening. The pump 16 then extracts the magnetic suspension and sprays it through the spray head. Simultaneously, the flaw detection device body 2 magnetizes the magnetic suspension on the workpiece. Excess magnetic suspension after spraying is collected in the collection tank 3, and the filter screen 6 filters the magnetic suspension, preventing impurities from accumulating and clogging the equipment, thus extending the service life of the magnetic suspension. When disassembling the fixing frame 5, the user moves the toggle block, causing the spring 8 to contract and the locking block 9 to move out of the slot. Then, pulling the fixing frame 5 allows the fixing to be removed. When frame 5 is pulled out, the user can clean the filter screen 6. After cleaning, the user inserts the fixed frame 5, which will contact the locking block 9. The locking block 9 receives a pushing force, the spring 8 contracts, and the locking block 9 temporarily contracts into the moving cavity 7. When the locking block 9 is aligned with the slot, the spring 8 returns to its original position, and the locking block 9 automatically moves into the slot, thus fixing the fixed frame 5. The user can easily install and remove the fixed frame 5, which facilitates cleaning the filter screen 6 and improves the portability of the device. When the magnetic suspension is stored in the storage tank 4, the user rotates the handle to cover the opening of the connecting pipe with the sealing plate 13, which can prevent dust, metal debris, moisture and other impurities in the environment from entering the storage tank 4, prevent magnetic suspension from being contaminated, maintain the stability of the magnetic suspension, and ensure the sensitivity of the flaw detection.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-precision fluorescent magnetic particle flaw detector, characterized in that, include: A base (1) is provided, on which a flaw detection device body (2) is installed. A collection groove (3) is provided on the base (1), and a liquid storage tank (4) is provided on the base (1). The collection groove (3) and the liquid storage tank (4) are connected by a connection port. A spray assembly and a sealing assembly are provided on the base (1). The spray assembly includes a fixed frame (5) that slides through the base (1). A filter screen (6) is fixedly installed on the inner wall of the fixed frame (5). A movable cavity (7) is provided on the base (1). A spring (8) is fixedly connected to the inner wall of the movable cavity (7). A movable plate is slidably connected in the movable cavity (7). A locking block (9) is fixedly connected to the movable plate. The card block (9) slides through the base (1), the moving plate is fixedly connected to the spring (8), the side wall of the fixed frame (5) has a card slot, the card block (9) matches the card slot, the inner wall of the moving cavity (7) has a toggle groove, a toggle rod is slidably connected in the toggle groove, the toggle rod is fixedly connected to the moving plate, the side wall of the base (1) is fixedly installed with a liquid pump (16), the liquid pump (16) is connected to the liquid storage tank (4), the upper end face of the base (1) is fixedly connected with a support frame (17), an infusion pipe is installed on the support frame (17), multiple spray heads are installed on the infusion pipe, and the infusion pipe is connected to the liquid outlet of the liquid pump (16).

2. The high-precision fluorescent magnetic particle flaw detector according to claim 1, characterized in that: The sealing assembly includes a sliding cavity (10) and a rotating cavity (11) disposed on the base (1). A threaded rod (12) is rotatably connected to the inner wall of the sliding cavity (10). A sliding plate is slidably connected inside the sliding cavity (10). The threaded rod (12) is threaded through the sliding plate. A sealing plate (13) is fixedly connected to the sliding plate. The sealing plate (13) slidably passes through the base (1). The sealing plate (13) matches the inner wall of the connection port. A first bevel gear (14) and a second bevel gear (15) are rotatably connected to the inner wall of the rotating cavity (11). The first bevel gear (14) and the second bevel gear (15) mesh with each other. The first bevel gear (14) and the threaded rod (12) are fixedly connected. A rotating rod is rotatably passed through the base (1). The rotating rod is fixedly connected to the second bevel gear (15).

3. The high-precision fluorescent magnetic particle flaw detector according to claim 1, characterized in that: The base (1) is connected to an injection pipe and a drain pipe. Both the injection pipe and the drain pipe are equipped with valves. Both the injection pipe and the drain pipe are connected to a storage tank (4). Solenoid valves are installed on multiple spray heads.

4. A high-precision fluorescent magnetic particle flaw detector according to claim 1, characterized in that: A handle is fixedly connected to the fixed frame (5), and a toggle block is fixedly connected to the toggle rod.

5. A high-precision fluorescent magnetic particle flaw detector according to claim 2, characterized in that: A handle is fixedly connected to the rotating rod, and the handle is provided with an anti-slip pad layer.

6. A high-precision fluorescent magnetic particle flaw detector according to claim 1, characterized in that: The lower end face of the base (1) is provided with anti-slip texture, and multiple connecting frames (18) are fixedly connected to the support frame (17), and the infusion tube is fixedly connected to the multiple connecting frames (18).

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