Automatic magnetic powder spraying device for manual flaw detection of steel casting

Abstract

The utility model discloses an automatic magnetic powder spraying device for manual flaw detection of a steel casting, which comprises a magnetic powder storage tank, a flaw detection instrument box is arranged at the bottom of the magnetic powder storage tank, and the flaw detection instrument box is connected with a cast steel flaw detection head for handheld flaw detection of the steel casting through a flaw detection connecting line. A worker can hold the cast steel flaw detection head with one hand to detect flaws of a cast steel part, and during flaw detection, the holding finger pulls the elastic reset pull rod through the pull ring to open the manual control valve, so that magnetic powder is sprayed out from the magnetic powder horn nozzle through the magnetic powder conveying pipe and the spraying plate; and the spraying plate is arranged on the face, making contact with the steel casting, of the cast steel flaw detection head, accurate spraying operation of the magnetic powder can be synchronously conducted in the flaw detection process, and the flaw detection efficiency of the steel casting is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic particle flaw detection, and particularly relates to a magnetic powder automatic spraying device for manual flaw detection of steel castings. Background Technique

[0002] Magnetic particle testing uses magnetic powder as the display medium to detect cracks and minute defects on the surface and near-surface of various small and medium-sized parts such as crankshafts, camshafts, and spline shafts caused by casting, quenching, machining, fatigue, etc. Although the existing flaw detection equipment can solve the problem that it is not convenient to fixedly place the spraying mechanism after using the magnetic powder spraying device for flaw detection, during use, the magnetic powder suspension always remains static in the magnetic powder box, and the magnetic powder in the magnetic powder suspension is prone to precipitation, which will cause the magnetic powder concentration distribution in the magnetic powder suspension to be uneven and may affect the flaw detection effect of the device.

[0003] For this reason, a magnetic powder spraying structure for magnetic particle flaw detection with the publication number of "CN220824967U" relates to the technical field of magnetic powder spraying. This magnetic powder spraying structure for magnetic particle flaw detection includes a support plate and a stirring mechanism. A storage box is fixedly installed on the top of the support plate; the stirring mechanism is arranged on the top of the storage box. The stirring mechanism includes a rotating rod, a toothed disc, a transmission chain, a hollow block, and an L-shaped pipe. A rotating rod is rotatably installed at the inner bottom of the storage box, a group of toothed discs are fixedly installed on the outer wall of the rotating rod, an L-shaped pipe is rotatably installed at the bottom of the hollow block, and another group of toothed discs are fixedly installed on the outer wall of the L-shaped pipe. The two groups of toothed discs are connected by a transmission chain and rotate continuously while the L-shaped pipe sucks the magnetic powder suspension. While not affecting the L-shaped pipe's suction of the magnetic powder suspension, it continuously stirs the magnetic powder suspension to prevent magnetic powder precipitation and keep the magnetic powder concentration in the upper and lower layers of the magnetic powder suspension uniform at all times, ensuring the flaw detection effect of the device.

[0004] However, for the above-mentioned magnetic powder spraying structure for magnetic particle flaw detection, although the output end of the pressure pump is fixedly installed with a discharge hose, and one end of the discharge hose is fixedly installed with a spray gun to achieve magnetic powder spraying, the following relatively obvious defects still exist during use: the above-mentioned spraying structure is independent and not an integrated structure design with the flaw detector head. Then, it is necessary for the staff to hold the flaw detector head with one hand and hold the magnetic powder spraying part with the other hand to perform magnetic powder spraying while flaw detecting the steel casting. This two-handed operation method is prone to inaccurately spraying the magnetic powder at the flaw detection position of the steel casting during flaw detection, so that most of the sprayed magnetic powder is sprayed on other positions of the steel casting, which will cause waste of magnetic powder. Content of the Utility Model

[0005] The purpose of the utility model is to provide a magnetic powder automatic spraying device for manual flaw detection of steel castings to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A magnetic powder automatic spraying device for manual flaw detection of cast steel parts, comprising:

[0007] A magnetic powder storage tank, a flaw detection instrument box is provided at the bottom of the magnetic powder storage tank, the flaw detection instrument box is connected through a flaw detection connection wire to a cast steel flaw detection head for manually performing flaw detection on the cast steel part, and one side of the magnetic powder storage tank is connected to a pressure pump installed on the outer side of the magnetic powder storage tank;

[0008] A spraying plate, the spraying plate is fixed at the center position of one end face of the cast steel flaw detection head, the spraying plate is connected through a magnetic powder delivery pipe to a quick-release pipe head installed on the surface of the cast steel flaw detection head and quickly detachably connected to the pressure pump, a manual control valve for manually switching on and off the spraying of magnetic powder is provided on the magnetic powder delivery pipe, and an elastic reset pull rod for pulling to switch on and off the manual control valve is movably connected to the switch handle of the manual control valve.

[0009] Preferably, one side of the surface of the cast steel flaw detection head is connected through a fixed block to a reset elastic member, and the other end of the reset elastic member is connected to the side surface of one end of the switch handle on the manual control valve. A hand-held handle is provided at one end of the cast steel flaw detection head, so that the amount of spraying can be controlled through the switch handle during the spraying of magnetic powder, and flaw detection and magnetic powder spraying can be carried out with a single hand.

[0010] Preferably, the elastic reset pull rod movably penetrates through a guiding and fixing block fixed on one side of the surface of the cast steel flaw detection head, and one end of the elastic reset pull rod is connected to a pull ring for a finger to insert and pull the elastic reset pull rod, realizing the functions of pulling and opening the manual control valve and automatically resetting and closing when released, and controlling the spraying of magnetic powder.

[0011] Preferably, a magnetic powder horn nozzle is evenly provided on one surface of the spraying plate, and an elastic hose is connected to the quick-release pipe head connected to the spraying plate, and the other end of the elastic hose is connected to the output end of the pressure pump, realizing more uniform spraying of magnetic powder.

[0012] Preferably, a stirring rod is rotatably provided inside the magnetic powder storage tank, and one end of the rotating shaft of the stirring rod is connected through transmission to the rotating shaft of a stirring motor installed at the end of the magnetic powder storage tank, so that the magnetic powder always remains in a moving state and the phenomenon of magnetic powder precipitation is avoided.

[0013] Preferably, a moving base is provided at the bottom of the flaw detection instrument box, and self-locking moving wheels for moving the flaw detection instrument box to any position are provided at the bottom of the moving base, realizing the movement of the magnetic powder storage tank following the flaw detection position, and increasing the convenience of spraying magnetic powder.

[0014] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: For the automatic magnetic powder spraying device for manual flaw detection of cast steel parts, through the spraying plate on the outer shell of the cast steel flaw detection head, the quick-release pipe head connected to the spraying plate through the magnetic powder conveying pipe, the connection of the manual control valve on the magnetic powder conveying pipe, and the combination of the elastic reset pull rod, reset elastic member, guiding and fixing block, and pull ring connected to the switch handle of the manual control valve, the staff can use one hand to hold the cast steel flaw detection head to detect the cast steel parts. During the flaw detection, the fingers holding the head can pull the elastic reset pull rod through the pull ring to open the manual control valve, allowing the magnetic powder to be ejected from the magnetic powder horn nozzle through the magnetic powder conveying pipe and the spraying plate. Therefore, the flaw detection of the cast steel parts and the precise spraying of the magnetic powder can be achieved with one hand. Moreover, the spraying plate is arranged on the side of the cast steel flaw detection head in contact with the cast steel parts, enabling the precise spraying operation of the magnetic powder to be carried out synchronously during the flaw detection process, further accelerating the flaw detection efficiency of the cast steel parts, and avoiding the situation where the magnetic powder cannot be accurately sprayed at the flaw detection position of the cast steel parts during the flaw detection, resulting in most of the ejected magnetic powder being sprayed on other positions of the cast steel parts, thereby causing waste of the magnetic powder.

[0015] Through the combination of the magnetic powder storage tank, stirring motor, stirring rod, and pressure pump, the magnetic powder liquid injected into the magnetic powder storage tank is stirred by the stirring motor driving the stirring rod, keeping the magnetic powder liquid in a moving state all the time, enabling the pressure pump to be evenly pumped out, transported through the elastic hose, and ejected, so that the substances in the magnetic powder liquid are kept in a uniformly mixed state, thus preventing the substances in the magnetic powder liquid from precipitating, which may cause the phenomenon of pipeline blockage when the pressure pump extracts the magnetic powder liquid, and preventing the occurrence of stratification, ensuring the flaw detection effect of the device, and improving the usability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a top view structural schematic diagram of the cast steel flaw detection head of the present utility model;

[0018] Figure 3 is a side view structural schematic diagram of the spraying plate of the present utility model.

[0019] In the figure: 1, magnetic powder storage tank; 2, flaw detection instrument box; 3, cast steel flaw detection head; 4, pressure pump; 5, spraying plate; 6, magnetic powder conveying pipe; 7, quick-release pipe head; 8, manual control valve; 9, elastic reset pull rod; 10, reset elastic member; 11, guiding and fixing block; 12, pull ring; 13, magnetic powder horn nozzle; 14, elastic hose; 15, hand-held handle; 16, stirring rod; 17, stirring motor; 18, moving base; 19, self-locking moving wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution: a magnetic powder automatic spraying device for manual flaw detection of cast steel parts, including:

[0022] A magnetic powder storage tank 1, a flaw detection instrument box 2 is provided at the bottom of the magnetic powder storage tank 1 to realize the flaw detection of cast steel parts. And the flaw detection instrument box 2 is connected to a cast steel flaw detection head 3 through an elastic connecting wire, and one end of the connecting wire is connected to the cast steel flaw detection head 3 through a detachable plug for quick disassembly and separation when not in use. The flaw detection instrument box 2 is connected to a cast steel flaw detection head 3 for manually detecting the flaws of cast steel parts through a flaw detection connecting wire to realize the flaw detection of cast steel parts by holding the cast steel flaw detection head 3. One side of the magnetic powder storage tank 1 is connected to a pressure pump 4 installed on the outer side of the magnetic powder storage tank 1, which can extract and spray the stored magnetic powder on the defective position of the cast steel part for marking;

[0023] A spraying plate 5, the spraying plate 5 is fixed at the center position of one end face of the cast steel flaw detection head 3, so that when the cast steel flaw detection head 3 detects a defect in the cast steel part, the spraying plate 5 accurately sprays magnetic powder on the defective position of the cast steel part, and the spraying plate 5 is at the center position between the two probes. The spraying plate 5 is connected to a quick-release pipe head 7 installed on the surface of the cast steel flaw detection head 3 and quickly detachably connected to the pressure pump 4 through a magnetic powder delivery pipe 6, so that the cast steel flaw detection head 3 can be quickly disassembled and separated from the magnetic powder storage tank 1 when not in use. A manual control valve 8 for manually switching and spraying magnetic powder is provided on the magnetic powder delivery pipe 6 to realize the on-off control of the magnetic powder ejection. An elastic reset pull rod 9 for pulling to switch the manual control valve 8 is movably connected to the switch handle of the manual control valve 8. When a defect is detected, the elastic reset pull rod 9 can be pulled in time to open the manual control valve 8 to spray magnetic powder for marking.

[0024] On one side of the surface of the steel casting flaw detector head 3, a reset elastic member 10 is connected through a fixed block provided. After the handle of the manual control valve 8 is opened to spray magnetic powder, when released, the reset elastic member 10 uses its elasticity to pull the handle to close the manual control valve 8. And the other end of the reset elastic member 10 is connected to the side surface of one end of the switch handle on the manual control valve 8, which is conducive to achieving the effect of automatic reset and closing after the switch handle of the manual control valve 8 is pulled and opened. One end of the steel casting flaw detector head 3 is provided with a hand-held handle 15, and the staff can perform flaw detection and magnetic powder spraying operations with one hand. A guiding fixed block 11 fixed on one side surface of the steel casting flaw detector head 3 movably penetrates through the elastic reset pull rod 9 to ensure that the elastic reset pull rod 9 reciprocates and maintains its position unchanged. And one end of the elastic reset pull rod 9 is connected with a pull ring 12 for a finger to insert and pull the elastic reset pull rod 9, so that the finger of the hand holding the steel casting flaw detector head 3 pulls the pull ring 12 to move the elastic reset pull rod 9 to open the manual control valve 8 for spraying magnetic powder.

[0025] On one side of the spraying plate 5, magnetic powder horn nozzles 13 are evenly arranged. When the manual control valve 8 is opened, the magnetic powder is evenly sprayed on the defects detected on the steel casting through the magnetic powder horn nozzles 13 evenly arranged on the spraying plate 5. And the quick-release pipe head 7 connected to the spraying plate 5 can be quickly disassembled and assembled with the elastic hose 14. The elastic hose 14 is connected above, and one end of the elastic hose 14 is provided with a connecting pipe head with an external thread, which can be threadedly disassembled and connected with the quick-release pipe head 7. The other end of the elastic hose 14 is connected to the output end of the pressure pump 4. Inside the magnetic powder storage tank 1, a stirring rod 16 is rotatably arranged to realize the stirring of the magnetic powder suspension. One end of the rotating shaft of the stirring rod 16 is connected in a transmission manner to the rotating shaft of a stirring motor 17 installed at the end of the magnetic powder storage tank 1 to drive the stirring rod 16 to rotate. And the stirring motor 17 is connected to an external power supply to start. At the bottom of the flaw detection instrument box 2, a moving base 18 is provided. At the bottom of the moving base 18, self-locking moving wheels 19 for moving the flaw detection instrument box 2 to any position are provided to realize the movement of the magnetic powder storage tank 1 and the flaw detection instrument box 2 to any position, so as to facilitate the flaw detection operation on the steel casting.

[0026] Specifically, during use, first, the magnetic powder storage tank 1 and the flaw detection instrument box 2 are moved to any position near the steel casting to be flaw detected by using the combination of the moving base 18 and the self-locking moving wheels 19. Then, the flexible hose 14 with an external threaded connecting pipe head is quickly connected to the quick-release pipe head 7, and the flaw detection instrument box 2 is connected to the steel casting flaw detector 3 through a connecting wire with a connecting plug. Next, magnetic powder is injected into the magnetic powder storage tank 1. The magnetic powder storage tank 1 is designed as a plastic integrally molded structure, which will not cause the magnetic powder to adsorb on the inner wall of the tank. At the same time, the stirring motor 17 drives the stirring rod 16 to stir the injected magnetic powder to keep it in a moving state. After that, a staff member holds the steel casting flaw detector 3 in one hand to perform flaw detection on the steel casting. When a defect is detected in the magnetic field flaw detection of the steel casting, the pressure pump 4 pumps out the magnetic powder and transports it to the magnetic powder delivery pipe 6 through the flexible hose 14 and the quick-release pipe head 7. At this time, a finger on the arm holding the steel casting flaw detector 3 pulls the pull ring 12, so that the elastic reset pull rod 9 pulls the switch wrench to move to one side, and the manual control valve 8 can be opened to allow high-pressure flow into the spraying plate 5 and evenly spray out through the evenly arranged magnetic powder horn nozzles 13 at the position where a defect is detected on the steel casting. After the magnetic powder is sprayed out, the pull ring 12 is released, and the elastic reset pull rod 9 is pulled back by the retraction elasticity of the stretched reset elastic member 10, and the switch handle automatically returns to the initial state, so that the manual control valve 8 is automatically closed. The spraying plate 5 is arranged at the central position between the two magnetic field flaw detectors and can accurately spray magnetic powder on the detected defect, thus avoiding the problem that the magnetic powder cannot be accurately sprayed at the flaw detection position of the steel casting during flaw detection, and most of the sprayed magnetic powder is sprayed on other positions of the steel casting, which will cause waste of magnetic powder.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic magnetic powder spraying device for manual flaw detection of cast steel parts, characterized in that, include: A magnetic powder storage tank (1), wherein a flaw detection instrument box (2) is provided at the bottom of the magnetic powder storage tank (1), wherein the flaw detection instrument box (2) is connected to a cast steel flaw detection head (3) for hand-held flaw detection of cast steel parts via a flaw detection connection line, and one side of the magnetic powder storage tank (1) is connected to a pressure pump (4) installed on one side of the outside of the magnetic powder storage tank (1); A spray plate (5) is fixed at the center of one end surface of a cast steel flaw detection head (3); the spray plate (5) is connected to a quick-release pipe head (7) installed on the surface of the cast steel flaw detection head (3) and quickly connected to a pressure pump (4) via a magnetic powder delivery pipe (6); a manual control valve (8) for manually switching on and off the spraying of magnetic powder is provided on the magnetic powder delivery pipe (6); and an elastic reset pull rod (9) for pulling on and off the manual control valve (8) is movably connected to the switch handle of the manual control valve (8).

2. The automatic magnetic powder spraying device for manual flaw detection of steel castings according to claim 1, characterized in that: One side of the surface of the cast steel flaw detection head (3) is connected to a reset elastic member (10) via a fixed block, and the other end of the reset elastic member (10) is connected to the side of one end of a switch handle on a manual control valve (8). A hand-held handle (15) is provided at one end of the cast steel flaw detection head (3).

3. An automatic magnetic powder spraying device for manual flaw detection of steel castings according to claim 1, characterized in that: The elastic reset rod (9) is movably penetrated by a guide fixing block (11) fixed to a side surface of the cast steel flaw detection head (3), and one end of the elastic reset rod (9) is connected to a pull ring (12) for inserting a finger to pull the elastic reset rod (9).

4. An automatic magnetic powder spraying device for manual flaw detection of steel castings according to claim 1, characterized in that: One side of the spray plate (5) is evenly provided with magnetic powder horn nozzles (13), and a flexible hose (14) is connected to the quick-release pipe head (7) connected to the spray plate (5), and the other end of the flexible hose (14) is connected to the output end of the pressure pump (4).

5. An automatic magnetic powder spraying device for manual flaw detection of steel castings according to claim 1, characterized in that: A stirring rod (16) is rotatably provided inside the magnetic powder storage tank (1), and one end of the rotating shaft of the stirring rod (16) passes through and is transmission-connected to the rotating shaft of a stirring motor (17) installed at the end of the magnetic powder storage tank (1).

6. The automatic magnetic powder spraying device for manual flaw detection of steel castings according to claim 1, wherein: A movable base (18) is provided at the bottom of the flaw detection instrument box (2), and a self-locking movable wheel (19) is provided at the bottom of the movable base (18) for enabling the flaw detection instrument box (2) to move to any position.

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