Portable magnetic powder spraying device for steel structure weld detection

Abstract

The utility model discloses a portable magnetic powder spraying device for steel structure weld joint detection relates to metal material detection technical field, including the jar body, the upper portion or bottom of jar body is installed with servo motor, the drive end of servo motor is connected with the connecting rod, the outer wall fixed mounting of connecting rod has helical blade, in the utility model, servo motor starts behind driving connecting rod rotation, makes helical blade rotate and produces the push of going up to magnetic suspension liquid, while connecting rod drives the synchronous rotation of inclined stirring vane, forms the lateral stirring, makes the full mixing of magnetic powder and carrier liquid, avoids the settlement. The helical blade can prevent the magnetic powder from accumulating in the tank bottom, the inclined stirring vane enhances the mixing effect from different directions, ensures that the concentration of magnetic suspension liquid is uniform, makes the distribution of the magnetic powder sprayed to the weld joint consistent, improves the detection accuracy, and can quickly restore the uniformity of the magnetic suspension liquid after the device is temporarily stopped, reduces the preparation time, improves the efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal material testing technology, specifically a portable magnetic powder spraying device for inspecting steel structure welds. Background Technology

[0002] In the quality inspection of steel structure welds, magnetic particle testing is one of the commonly used non-destructive testing methods. Its principle is to apply a magnetic field to the weld to generate a leakage magnetic field at the defect, and then use the magnetic powder attracted by the leakage magnetic field to form a magnetic trace to determine the location of the defect.

[0003] In the magnetic particle inspection of steel structure welds, portable magnetic particle spraying devices are crucial for applying magnetic suspension to the weld surface, and their performance directly affects the accuracy of defect detection. Existing devices suffer from several problems: the magnetic suspension is composed of magnetic powder and a carrier liquid; the magnetic powder has a high density and tends to settle easily when left to stand, leading to stratification within the tank—the bottom layer has an excessively high magnetic powder concentration, while the upper layer is relatively thin. During spraying, the initial spray of magnetic suspension, due to excessive magnetic powder, tends to accumulate on the weld surface, masking minor defects; the later spray, due to insufficient magnetic powder, fails to form clear magnetic traces at defects, affecting detection accuracy. Furthermore, if the device is restarted after a short pause, the settled magnetic powder cannot be quickly and evenly mixed, requiring additional time for manual stirring, prolonging the preparation process and reducing work efficiency. In addition, traditional stirring structures are mostly unidirectional, resulting in limited mixing effects and difficulty in completely preventing magnetic powder accumulation at the bottom of the tank, making it impossible to consistently maintain the uniformity of the magnetic suspension concentration, thus hindering reliable inspection of steel structure welds. Utility Model Content

[0004] The purpose of this invention is to provide a portable magnetic powder spraying device for inspecting weld seams in steel structures, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a portable magnetic powder spraying device for inspecting weld seams of steel structures, including a tank. A servo motor is installed at the bottom of the tank. A connecting rod is connected to the drive end of the servo motor. A spiral blade is fixedly installed on the outer wall of the connecting rod. A connecting rod is fixedly installed on the spiral blade. A stirring blade is fixedly installed at the end of the connecting rod away from the connecting rod. The stirring blade is inclined.

[0006] Furthermore, the stirring blades are arranged in a wavy shape.

[0007] Furthermore, a battery is fixedly installed inside the tank near the servo motor, and a cap is fixedly installed at the bottom of the tank.

[0008] Furthermore, a belt is fixedly installed on one side of the tank, a female buckle is fixedly installed at one end of the belt, and a female buckle is fixedly installed at the other end of the belt.

[0009] Furthermore, an elastic buckle is fixedly installed on the belt, and the elastic buckle is C-shaped.

[0010] Furthermore, a sprayer is provided on the belt, a pump body is provided on the sprayer, and a connecting pipe is fixedly installed between the tank and the pump body.

[0011] Furthermore, the sprayer also has a battery inside, and a spray switch is provided on the handle of the sprayer.

[0012] Furthermore, the elastic buckle is a highly elastic polymer buckle.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this invention, after the servo motor starts, it drives the connecting rod to rotate, causing the spiral blades to rotate and generate an upward pushing force on the magnetic suspension. Simultaneously, the connecting rod drives the inclined stirring blades to rotate synchronously, forming a transverse stirring effect. This ensures that the magnetic powder and the carrier liquid are fully mixed, preventing sedimentation. The spiral blades prevent magnetic powder from accumulating at the bottom of the tank, and the inclined stirring blades enhance the mixing effect from different directions, ensuring uniform concentration of the magnetic suspension. This results in a consistent distribution of magnetic powder sprayed onto the weld, improving detection accuracy. Furthermore, the device can quickly restore the uniformity of the magnetic suspension after a short period of inactivity, reducing preparation time and improving efficiency.

[0014] 2. In this utility model, the waist belt on one side of the tank can be fixed to the operator's waist by the cooperation of the female buckle and the female buckle, eliminating the need to hold the tank, reducing the burden on the hands when carrying it, and facilitating flexible movement of the operator during movement or climbing. The connection method of the female buckle and the female buckle is simple, and it can be quickly put on or taken off, adapting to the rapid switching of different testing scenarios and improving the portability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the connection structure between the tank and the battery in this utility model; Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0016] In the diagram: 1. Tank body; 2. Servo motor; 3. Connecting rod; 4. Spiral blade; 5. Connecting rod; 6. Agitator blade; 7. Belt; 8. Female buckle; 9. Female buckle; 10. Connecting pipe; 11. Sprayer; 12. Elastic buckle; 13. Pump body; 14. Battery. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This utility model provides a technical solution: Example 1 See Figure 1 , Figure 3 and Figure 4 A portable magnetic powder spraying device for inspecting weld seams of steel structures includes a tank body 1. A servo motor 2 is installed at the bottom of the tank body 1. A connecting rod 3 is connected to the drive end of the servo motor 2. A spiral blade 4 is fixedly installed on the outer wall of the connecting rod 3. A connecting rod 5 is fixedly installed on the spiral blade 4. A stirring blade 6 is fixedly installed at the end of the connecting rod 5 away from the connecting rod 3. The stirring blade 6 is inclined.

[0019] After the servo motor 2 at the bottom of the tank 1 is started, its drive end drives the connecting rod 3 to rotate. The spiral blades 4 on the outer wall of the connecting rod 3 rotate together. When the spiral blades 4 rotate, they will generate an upward pushing force on the magnetic suspension liquid in the tank 1. At the same time, the connecting rod 5 on the spiral blades 4 drives the inclined stirring blades 6 to rotate synchronously. During the rotation, the stirring blades 6 form a lateral stirring effect on the magnetic suspension liquid, so that the magnetic powder and the carrier liquid are fully mixed and the magnetic powder is prevented from settling due to static settling.

[0020] The servo motor 2 drives the spiral blades 4 to continuously push the magnetic suspension liquid at the bottom of the tank 1 upwards, preventing magnetic powder from accumulating at the bottom of the tank. The inclined stirring blades 6, in conjunction with the movement of the spiral blades 4, stir the magnetic suspension liquid from different directions, enhancing the mixing effect, reducing magnetic powder sedimentation, and ensuring uniform magnetic suspension liquid concentration. This results in a consistent distribution of magnetic powder sprayed onto the weld surface, improving the accuracy of defect detection. The rotation of the stirring blades 6 can also break the static stratification state of the magnetic suspension liquid. Even if the device is restarted after a short shutdown, the uniformity of the magnetic suspension liquid can be quickly restored, reducing preparation time before detection and improving detection efficiency.

[0021] See Figure 3 The stirring blade 6 is set in a wavy shape.

[0022] The stirring blade 6 is designed in a wave shape, which increases the contact area with the magnetic suspension when rotating, allowing the magnetic suspension to form more eddies around the blade, enhancing the stirring effect on the magnetic powder, making the magnetic powder and carrier liquid mix more thoroughly, reducing the agglomeration or precipitation of magnetic powder. At the same time, the wave-shaped structure can reduce the resistance during stirring, making the stirring process more stable, helping to maintain the uniformity of the magnetic suspension concentration, and improving the reliability of subsequent spray detection.

[0023] See Figure 3 A battery 14 is fixedly installed at the bottom of the inner part of the tank 1, and a cap is fixedly installed at the bottom of the tank 1.

[0024] The battery 14 at the bottom of the tank 1 can provide stable power to components such as the servo motor 2 without the need for an external power source, thus improving the portability and flexibility of the device and adapting it to different testing scenarios. The cap at the bottom of the tank 1 can effectively protect the battery 14, preventing the magnetic suspension fluid from leaking into the battery 14 and causing damage. It can also prevent external dust and moisture from entering and affecting the performance of the battery 14, thus extending the battery 14's service life.

[0025] See Figure 1 A belt 7 is fixedly installed on one side of the tank body 1. A female buckle 8 is fixedly installed at one end of the belt 7, and a male buckle 9 is fixedly installed at the other end of the belt 7.

[0026] The elastic buckle 12 is durable in daily use, lightweight and with appropriate elasticity, meeting the needs of repeated clamping and placement of the sprayer 11, suitable for the device's regular use scenarios. The waist belt 7 on one side of the tank 1, through the cooperation of the female buckle 8 and the female buckle 9, can fix the device to the operator's waist without having to hold the tank 1, reducing the burden on the hands when carrying it, and facilitating flexible movement of the operator during movement or climbing. The connection method of the female buckle 8 and the female buckle 9 is simple, allowing for quick putting on or taking off, adapting to the rapid switching of different detection scenarios, and improving the portability of the device.

[0027] See Figure 1 An elastic buckle 12 is fixedly installed on the waist belt 7, and the elastic buckle 12 is C-shaped.

[0028] The C-shaped elastic buckle 12 on the belt 7 can flexibly hold the sprayer 11 and fix it when the sprayer 11 is not in use, preventing the sprayer 11 from shaking or falling, freeing the operator's hands and facilitating other test preparation work. The elastic design allows the buckle to adapt to sprayers 11 of different sizes, clamping firmly and taking them out and putting them away easily, improving safety and efficiency during operation.

[0029] See Figure 1 A sprayer 11 is installed on the belt 7, and a pump body 13 is installed on the sprayer 11. A connecting pipe 10 is fixedly installed between the tank 1 and the pump body 13.

[0030] The sprayer 11 on the belt 7 can be hand-held and controlled by the operator. Together with the pump body 13, it draws magnetic suspension liquid from the tank 1 through the connecting pipe 10. This allows for flexible adjustment of the spray angle and range according to the weld position, ensuring that the magnetic suspension liquid accurately covers the detection area. The connecting pipe 10 stably connects the tank 1 and the pump body 13, ensuring smooth delivery of the magnetic suspension liquid and preventing leakage. The pump body 13 can provide continuous power, making the spray pressure stable, reducing the waste of magnetic suspension liquid, and improving detection efficiency and effect.

[0031] See Figure 1 The sprayer 11 also has a battery 14 inside, and a spray switch is provided on the handle of the sprayer 11.

[0032] like Figure 4 As shown, the female buckle 8 and the female buckle 9 are secured by interlocking. When the operator wraps the belt 7 around their waist, they insert the female buckle 9 into the female buckle 8 and fasten it, thus securing the belt 7 firmly to the body and preventing the device from slipping during movement. The battery 14 inside the sprayer 11 provides independent power to the pump body 13, eliminating the need for additional wiring and making the operation of the sprayer 11 more flexible. The spray switch on the handle allows the operator to control the start and stop of the spray at any time, and can precisely control the timing and amount of magnetic suspension spray according to the testing requirements, reducing unnecessary waste and improving the convenience and accuracy of operation.

[0033] See Figure 1 The elastic buckle 12 is a high-elasticity polymer (PA) buckle, and the top of the tank 1 is provided with a feed port, which is threaded with a sealing cap.

[0034] The elastic buckle 12 is made of plastic, which is lightweight and has good elasticity. It can reduce the overall weight of the belt 7 and reduce the wear on the surface of the sprayer 11. The feed port at the top of the tank 1 is easy to seal with the threaded cap, which facilitates the addition of magnetic suspension liquid. The threaded structure can enhance the sealing performance, prevent the magnetic suspension liquid from leaking when the device is moved or turned over, ensure the cleanliness of the inside of the tank 1, and also prevent external impurities from entering and affecting the quality of the magnetic suspension liquid.

[0035] Example 2 The difference between this embodiment and Embodiment 1 is: Figure 2 As shown, a servo motor 2 is installed on the upper part of the tank 1, and a battery 14 is fixedly installed on the upper inner part of the tank 1.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A portable magnetic powder spraying device for inspecting weld seams in steel structures, comprising a tank (1), characterized in that: A servo motor (2) is installed on the upper or lower part of the tank (1). A connecting rod (3) is connected to the drive end of the servo motor (2). A spiral blade (4) is fixedly installed on the outer wall of the connecting rod (3). A connecting rod (5) is fixedly installed on the spiral blade (4). A stirring blade (6) is fixedly installed at the end of the connecting rod (5) away from the connecting rod (3). The stirring blade (6) is inclined.

2. The portable magnetic powder spraying device for inspecting steel structure welds as described in claim 1, characterized in that: The stirring blade (6) is arranged in a wavy shape.

3. The portable magnetic powder spraying device for inspecting steel structure welds as described in claim 2, characterized in that: A battery (14) is fixedly installed inside the tank (1) on the side near the servo motor (2), and a cap is fixedly installed at the bottom of the tank (1).

4. The portable magnetic powder spraying device for inspecting steel structure welds as described in claim 3, characterized in that: A belt (7) is fixedly installed on one side of the tank (1), a female buckle (8) is fixedly installed at one end of the belt (7), and a female buckle (9) is fixedly installed at the other end of the belt (7).

5. The portable magnetic powder spraying device for inspecting steel structure welds as described in claim 4, characterized in that: An elastic buckle (12) is fixedly installed on the belt (7), and the elastic buckle (12) is C-shaped.

6. The portable magnetic powder spraying device for inspecting steel structure welds as described in claim 5, characterized in that: A sprayer (11) is provided on the belt (7), and a pump body (13) is provided on the sprayer (11). A connecting pipe (10) is fixedly installed between the tank (1) and the pump body (13).

7. A portable magnetic powder spraying device for inspecting steel structure welds as described in claim 6, characterized in that: The sprayer (11) also has a battery (14) inside, and a spray switch is provided on the handle of the sprayer (11).

8. The portable magnetic powder spraying device for inspecting steel structure welds as described in claim 7, characterized in that: The elastic buckle (12) is a highly elastic polymer buckle.

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