Device for detecting magnetic powder on inner surface of blind hole of roll shaft

Abstract

The utility model relates to a roller shaft blind hole inner surface magnetic particle detection device which comprises a magnetic suspension applying assembly, a magnetization probe assembly and a magnetization host, the magnetization probe assembly comprises a mounting plate, and an operating rod used for moving the magnetization probe assembly is arranged on the upper side of the mounting plate; a spray head is arranged on the lower surface of the mounting plate and is connected with the magnetic suspension applying assembly through a hose; electromagnets are arranged at the four corners of the lower surface of the mounting plate respectively, the electromagnetic polarities of the lower ends of every two adjacent non-diagonal electromagnets are opposite, a graduated scale is arranged between every two adjacent non-diagonal electromagnets, and a camera used for observing the graduated scale is mounted on one side of the mounting plate; and the electromagnet is connected with the magnetizing host through a magnetizing cable. According to the utility model, the magnetization probe assembly is moved through the operating rod to carry out magnetic powder detection on the blind hole of the roller press roller shaft, the blind hole defect is measured through the graduated scale, the product quality is guaranteed, the service life of the roller press roller shaft is prolonged, the detection efficiency is high, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of nondestructive testing, and particularly relates to a magnetic particle detection device for the inner surface of a blind hole of a roller shaft. Background Art

[0002] Conventional magnetic particle detectors cannot perform magnetic particle detection on the surface of the blind hole of the roller shaft of a roller press. As an important equipment component in the grinding field, defects on the surface of the blind hole of the roller shaft will affect the service life of the roller shaft. If there are defects on the surface, in use, it will cause equipment safety accidents and economic losses at least, and will affect the personal safety of the personnel at the production site at worst. For this reason, this application proposes a magnetic particle detection device for the inner surface of a blind hole of a roller shaft. Summary of the Utility Model

[0003] In view of the above problems, the utility model proposes a magnetic particle detection device for the inner surface of a blind hole of a roller shaft, and the specific technical solutions are as follows:

[0004] A magnetic particle detection device for the inner surface of a blind hole of a roller shaft includes a magnetic suspension liquid application component, a magnetization probe component and a magnetization main engine. The magnetization probe component includes a mounting plate, and an operating rod for moving the magnetization probe component is arranged on the upper side of the mounting plate; a nozzle is arranged on the lower surface of the mounting plate, and the nozzle is connected to the magnetic suspension liquid application component through a hose; electromagnets are respectively arranged at the four corners of the lower surface of the mounting plate, the electromagnetic polarities of the lower ends of two adjacent non-diagonal electromagnets are opposite, a scale is arranged between two adjacent non-diagonal electromagnets, and a camera for observing the scale is installed on one side of the mounting plate; the electromagnets are connected to the magnetization main engine through magnetization cables.

[0005] Further, the magnetic suspension liquid application component includes a magnetic suspension liquid storage tank, a stirring motor and a gear pump; a stirring shaft is arranged in the magnetic suspension liquid storage tank, and the stirring motor is coaxially connected to the stirring shaft; one end of the gear pump is connected to the magnetic suspension liquid storage tank through a pipeline, the other end of the gear pump is respectively connected to the hose and a return pipe through a three-way joint, the other end of the return pipe is connected into the magnetic suspension liquid storage tank, and the other end of the hose is connected to the nozzle.

[0006] Further, the operating rod is a T-shaped rod.

[0007] Further, the scale is a transparent scale.

[0008] Further, the gear pump is a speed-regulating gear pump, a first regulating valve and a solenoid valve are installed on the hose, and a second regulating valve is installed on the return pipe.

[0009] Further, it further includes a remote controller, a display screen is arranged on the remote controller, and the remote controller controls the operation of the solenoid valve, the camera, the gear pump, the stirring motor and the magnetization main engine respectively through wireless connection.

[0010] The beneficial effects of the utility model are as follows:

[0011] The magnetization probe assembly is moved by the operating rod to perform magnetic particle inspection on the blind holes of the roll shaft of the roll press. The defects of the blind holes are measured by the scale, which is beneficial to ensuring the product quality, extending the service life of the roll shaft of the roll press, and having high detection efficiency, which is beneficial to improving the production efficiency. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a structural schematic diagram of the magnetic particle inspection device for the inner surface of the blind hole of the roll shaft described in the present invention.

[0014] In the figure: 1, camera; 2, nozzle; 3, electromagnet; 4, scale; 5, hose; 6, operating rod; 7, solenoid valve; 8, tee joint; 9, gear pump; 10, magnetization cable; 11, return pipe; 12, magnetization host; 13, stirring motor; 14, magnetic suspension liquid storage tank; 15, mounting plate. Detailed Embodiments

[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0016] The present invention provides the following specific implementation schemes:

[0017] As Figure 1As shown in the figure, the utility model provides a magnetic particle testing device for the inner surface of a roller shaft blind hole, which includes a magnetic suspension liquid application component, a magnetization probe component, and a magnetization mainframe 12. The magnetization probe component includes a rectangular installation plate 15. An operating rod 6 for moving the magnetization probe component is provided on the upper side of the installation plate 15 by welding. A nozzle 2 is provided on the lower surface of the installation plate 15. The nozzle 2 is located at the center of the installation plate 15. The nozzle 2 is connected to the magnetic suspension liquid application component through a hose 5. Electromagnets 3 are respectively provided at the four corners of the lower surface of the installation plate 15. The electromagnetic polarities of the lower ends of two adjacent non-diagonal electromagnets 3 are opposite. A scale 4 is provided between the lower ends of two adjacent non-diagonal electromagnets 3. A camera 1 for observing the scale 4 is installed on one side of the installation plate 15. The electromagnets 3 are connected to the magnetization mainframe 12 through a magnetization cable 10 after being connected in series.

[0018] Preferably, the magnetic suspension liquid application component includes a magnetic suspension liquid storage tank 14, a stirring motor 13, and a gear pump 9. A stirring shaft is provided in the magnetic suspension liquid storage tank 14, and blades are installed on the stirring shaft. The stirring motor 13 is coaxially connected to the stirring shaft. One end of the gear pump 9 is connected to the magnetic suspension liquid storage tank 14 through a pipeline. The other end of the gear pump 9 is respectively connected to the hose 5 and a return pipe 11 through a tee joint 8. The other end of the return pipe 11 is connected into the magnetic suspension liquid storage tank 14. The other end of the hose 5 is connected to the nozzle 2. After the gear pump 9 pumps the magnetic suspension liquid out of the magnetic suspension liquid storage tank 14, a part of the magnetic suspension liquid enters the nozzle 2 through the hose 5, and another part flows back into the magnetic suspension liquid storage tank 14 through the return pipe 11, so as to achieve the purpose of reducing the pressure of the magnetic suspension liquid in the hose 5.

[0019] Preferably, the operating rod 6 is a T-shaped rod, which is more convenient for the testing personnel to move or rotate the magnetization probe component.

[0020] Preferably, the scale 4 is a transparent scale 4, and the size of the defect in the blind hole can be captured more conveniently through the camera 1.

[0021] Preferably, the gear pump 9 is a speed-regulating gear pump 9. A first regulating valve and a solenoid valve 7 are installed on the hose 5, and a second regulating valve is installed on the return pipe 11. The pressure of the magnetic suspension liquid in the hose 5 can be further adjusted by adjusting the rotation speed of the speed-regulating gear pump 9, the passage size of the first regulating valve, and the passage size of the second regulating valve.

[0022] Preferably, it further includes a remote controller. A display screen for displaying the image captured by the camera 1 is provided on the remote controller. The remote controller controls the operation of the solenoid valve 7, the camera 1, the gear pump 9, the stirring motor 13, and the magnetization mainframe 12 through wireless connection respectively.

[0023] When conducting the detection, initially adjust the passage sizes of the first regulating valve and the second regulating valve according to the required magnetic suspension liquid pressure in the hose 5. Send the magnetization probe assembly into the roller blind hole through the operating rod 6. Turn on the stirring motor 13 through the remote control to stir the magnetic suspension liquid. Subsequently, turn on the camera 1, the gear pump 9, the solenoid valve 7, and the magnetization mainframe 12. A part of the magnetic suspension liquid flows back into the magnetic suspension liquid storage tank 14 through the return pipe 11, and another part of the magnetic suspension liquid is sprayed into the roller blind hole to be detected after passing through the hose 5 and the nozzle 2 successively. Observe the spraying situation of the magnetic suspension liquid, adjust the rotational speed of the gear pump 9 through the remote control to further adjust the magnetic suspension liquid pressure in the hose 5. At the same time, energize the electromagnet 3, observe the situation inside the roller blind hole through the camera 1. When a defect is found, use the scale 4 to measure the size of the defect. Rotate and move the magnetization probe assembly through the operating rod 6 to conduct a comprehensive detection of the roller blind hole. After the detection is completed, first turn off the stirring motor 13, the camera 1, the solenoid valve 7, and the magnetization mainframe 12. Subsequently, reverse the gear pump 9 to pump back the unsprayed magnetic suspension liquid into the magnetic suspension liquid storage tank 14, and finally turn off the gear pump 9.

[0024] Move the magnetization probe assembly through the operating rod 6 to conduct magnetic particle detection inside the roller blind hole of the roller press, and measure the blind hole defect through the scale 4, which is beneficial to ensuring product quality, extending the service life of the roller shaft of the roller press. At the same time, the detection efficiency is high, which is beneficial to improving production efficiency. At the same time, after the detection is completed, the unused magnetic suspension liquid is pumped back into the magnetic suspension liquid storage tank 14, which is more environmentally friendly.

[0025] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A magnetic particle testing device for the inner surface of a blind hole of a roller shaft, characterized in that: It includes a magnetic suspension liquid application component, a magnetization probe component and a magnetization mainframe (12). The magnetization probe component includes a mounting plate (15). An operating rod (6) for moving the magnetization probe component is provided on the upper side of the mounting plate (15); a nozzle (2) is provided on the lower surface of the mounting plate (15), and the nozzle (2) is connected to the magnetic suspension liquid application component through a hose (5); electromagnets (3) are respectively provided at the four corners of the lower surface of the mounting plate (15). The electromagnetic polarities of the lower ends of two adjacent non-diagonal electromagnets (3) are opposite. A scale (4) is provided between two adjacent non-diagonal electromagnets (3). A camera (1) for observing the scale (4) is installed on one side of the mounting plate (15); the electromagnets (3) are connected to the magnetization mainframe (12) through magnetization cables (10).

2. The magnetic particle inspection device for the inner surface of the blind hole of the roller shaft according to claim 1, wherein: The magnetic suspension liquid application component includes a magnetic suspension liquid storage tank (14), a stirring motor (13), and a gear pump (9); a stirring shaft is provided in the magnetic suspension liquid storage tank (14), and the stirring motor (13) is coaxially connected to the stirring shaft; one end of the gear pump (9) is connected to the magnetic suspension liquid storage tank (14) through a pipeline. The other end of the gear pump (9) is respectively connected to the hose (5) and a return pipe (11) through a three-way joint (8). The other end of the return pipe (11) is connected into the magnetic suspension liquid storage tank (14), and the other end of the hose (5) is connected to the nozzle (2).

3. The magnetic particle testing device for the inner surface of the blind hole of the roller shaft according to claim 1, wherein: The operating rod (6) is a T-shaped rod.

4. A magnetic particle inspection device for the inner surface of a blind hole of a roller shaft according to claim 1, characterized in that: The scale (4) is a transparent scale (4).

5. The magnetic particle inspection device for the inner surface of the blind hole of the roller shaft according to claim 1, characterized in that: The gear pump (9) is a speed-regulating gear pump (9). A first regulating valve and a solenoid valve (7) are installed on the hose (5), and a second regulating valve is installed on the return pipe (11).

6. The magnetic particle testing device for the inner surface of the blind hole of a roller shaft according to claim 5, wherein: It further includes a remote controller. A display screen is provided on the remote controller. The remote controller controls the operation of the solenoid valve (7), the camera (1), the gear pump (9), the stirring motor (13) and the magnetization mainframe (12) respectively through wireless connection.

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