Spraying device of magnetic particle flaw detector

Abstract

The utility model provides a spraying device of a magnetic powder flaw detector, and relates to the field of magnetic powder flaw detection. The spraying device of the magnetic particle flaw detector comprises an outer box, a clamping mechanism and a spraying mechanism, an adjusting mechanism is arranged on the side face of the spraying mechanism and comprises a blocking pipe and an arc-shaped plate, the inner wall of the blocking pipe is slidably connected with the surface of the spraying mechanism, the surface of the arc-shaped plate is attached to the inner wall of the spraying mechanism, and the clamping mechanism is connected with the left side of the outer box. And the spraying mechanism is connected with the top of the outer box. According to the spraying device of the magnetic particle flaw detector, the adjusting mechanism is arranged, a two-way hydraulic rod stretches out and draws back to drive a connecting plate to move to drive blocking pipes to move oppositely so as to adjust the length of a spraying opening to a target numerical value, an output shaft of a second motor in a protection box rotates to drive a rotating plate to rotate, and the rotating plate rotates to drive an arc-shaped plate to rotate so as to adjust the width of the spraying opening to a proper numerical value; the control accuracy of the spraying range is improved, the possibility of waste of spraying magnetic powder is reduced, and the operation cost of the spraying device is reduced.

Description

Technical Field

[0001] This application relates to the field of magnetic particle inspection technology, specifically to a spray device for a magnetic particle inspection machine. Background Technology

[0002] Magnetic particle testing utilizes the fact that when ferromagnetic materials are magnetized, the discontinuities cause localized distortion of the magnetic field lines on and near the workpiece surface, generating a leakage magnetic field (i.e., the magnetic field formed when magnetic induction lines leave and enter the surface). This magnetic field attracts magnetic powder applied to the workpiece surface, forming magnetic traces visible to the naked eye under suitable lighting, thus revealing the location, shape, and size of the discontinuities. During magnetic particle testing, to ensure that the magnetic field fully covers the area to be inspected, a spraying device is used to evenly adhere the magnetic powder to the workpiece surface.

[0003] CN222132271U discloses a magnetic suspension spraying device for a magnetic particle flaw detector. This device uses a spraying control module to control the number of nozzles opened, thereby controlling the final width of the sprayed magnetic powder and preventing waste. The liftable spraying control module can adapt to workpieces of different diameters. A second electric push rod extends to clamp the workpiece from both ends. A motor drives a turntable to rotate on a support, causing the fixedly connected second electric push rod to rotate, thus flipping the clamped workpiece. This, combined with the top spraying device, allows for uniform spraying of the magnetic suspension onto the surface of the object to be inspected. The purpose is to form a uniform magnetic suspension film to detect magnetic defects on the workpiece surface. However, this spraying device adjusts the spraying range by controlling the number of nozzles activated, resulting in low precision in spraying range control and room for improvement in the accuracy of controlling the amount of sprayed magnetic powder. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this application provides a spraying device for a magnetic particle flaw detector, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this application provides the following technical solution: a magnetic particle flaw detector spraying device, comprising an outer casing, a clamping mechanism for fixing and rotating a workpiece, and a spraying mechanism for uniformly spraying magnetic powder onto the surface of the workpiece. The spraying mechanism has an adjustment mechanism on its side for adjusting the spraying range. The adjustment mechanism includes a baffle and an arc plate. The inner wall of the baffle is slidably connected to the surface of the spraying mechanism, and the surface of the arc plate is in contact with the inner wall of the spraying mechanism. The clamping mechanism is connected to the left side of the outer casing, and the spraying mechanism is connected to the top of the outer casing.

[0008] By adopting the above technical solution, the length of the spray nozzle can be adjusted by using the baffle, and the width of the spray nozzle can be adjusted by using the rotation of the arc plate, thereby improving the accuracy of magnetic powder spraying and reducing magnetic powder waste.

[0009] Preferably, the adjusting mechanism further includes a bidirectional hydraulic rod and a connecting plate. The surface of the bidirectional hydraulic rod is connected to the spraying mechanism, the top of the connecting plate is connected to the bottom of the left and right ends of the bidirectional hydraulic rod, and the bottom of the connecting plate is connected to one side of the top of the baffle.

[0010] By adopting the above technical solution, the bidirectional hydraulic rod can be used to extend and retract to move the connecting plate, thereby causing the baffle pipe to move towards or away from each other, ensuring that the center point of the spray nozzle remains unchanged.

[0011] Preferably, the adjustment mechanism further includes a protective box and a second motor. The right side of the protective box is connected to the left side of the spraying mechanism, the second motor is connected to the left side of the inner wall of the protective box, and the output shaft of the second motor is connected to a rotating plate. One end of the rotating plate is connected to the left side of the arc-shaped plate.

[0012] By adopting the above technical solution, the output shaft of the second motor inside the protective box can be used to drive the rotating plate to rotate, and the rotation of the rotating plate can drive the arc plate to rotate to adjust the width of the spray nozzle.

[0013] Preferably, the outer casing also includes a casing body and a door, the top of the casing body is connected to the spraying mechanism, and the left side of the door is hinged to the left side of the inner wall of the casing body.

[0014] By adopting the above technical solution, the workpiece can be easily placed and retrieved using the box door, and the occurrence of magnetic powder falling onto the outside of the box can be reduced.

[0015] Preferably, the clamping mechanism includes a support plate and a right push rod. The right side of the support plate is connected to the lower left side of the box body, and a first motor is connected to the top of the support plate. The output shaft of the first motor is connected to a left push rod, and the right side of the right push rod is rotatably connected to the lower right side of the inner wall of the box body.

[0016] By adopting the above technical solution, the workpiece can be fixed by extending the left and right push rods simultaneously. The rotation of the first motor output shaft at the top of the support plate drives the workpiece between the left and right push rods to rotate, which facilitates uniform spraying of magnetic powder.

[0017] Preferably, the clamping mechanism further includes a clamping plate and a controller. The clamping plate is connected to one end of the left push rod and one end of the right push rod, respectively, and the right side of the controller is connected to the upper left side of the housing.

[0018] By adopting the above technical solution, the workpiece can be easily clamped and fixed using the clamping plate, and the various devices of the spraying device can be controlled to operate in coordination using the controller.

[0019] Preferably, the spraying mechanism includes a storage tank and a feed pipe. The bottom of the storage tank is connected to the center of the top of the tank body, the bottom of the feed pipe is connected to the top of the storage tank, a pump is connected to the front of the storage tank, the bottom of the pump is connected to the front of the top of the tank body, a conveying pipe is connected to the front of the pump, and the surface of the conveying pipe is connected to the top of the tank body.

[0020] By adopting the above technical solution, the magnetic powder poured from the feed pipe into the storage tank can be transported by the conveying pipe using an extraction pump, thereby providing pressure for the spraying of the magnetic powder.

[0021] Preferably, the spraying mechanism further includes an outer pipe and a fixing plate. The top right side of the outer pipe is connected to one end of the conveying pipe, the left side of the outer pipe is connected to the right side of the protective box, the center of the left side of the outer pipe is rotatably connected to the output shaft of the second motor, both sides of the outer pipe are slidably connected to the inner wall of the baffle, the inner wall of the outer pipe is in contact with the surface of the arc-shaped plate, a dividing plate is connected to the upper part of the inner wall of the outer pipe, a spray nozzle is opened at the bottom of the outer pipe, the bottom of the fixing plate is connected to the center of the top of the outer pipe, the top of the fixing plate is connected to the top of the inner wall of the box, and the center of the fixing plate is connected to the surface of the bidirectional hydraulic rod.

[0022] By adopting the above technical solution, the partition plate inside the outer tube can be used to facilitate the uniform distribution of magnetic powder. Then, the magnetic powder is sprayed out from the spray nozzle and adheres to the surface of the workpiece, ensuring the uniformity of magnetic powder spraying.

[0023] (III) Beneficial Effects

[0024] This application provides a spray device for a magnetic particle flaw detector. It has the following beneficial effects:

[0025] 1. The spraying device of this magnetic particle flaw detector, through the setting of an adjustment mechanism, uses a bidirectional hydraulic rod to extend and retract, which drives the connecting plate to move and the baffle to move in opposite directions to adjust the length of the spray nozzle to the target value. The output shaft of the second motor in the protective box rotates, which drives the rotating plate to rotate. The rotation of the rotating plate drives the arc plate to rotate, which adjusts the width of the spray nozzle to a suitable value. This improves the control accuracy of the spraying range, reduces the possibility of wasting sprayed magnetic powder, and reduces the operating cost of the spraying device.

[0026] 2. The spraying device of this magnetic particle flaw detector, by setting up a clamping mechanism, controls the left and right push rods to extend until the clamping plate is in contact with the side of the workpiece and fixes it. The output shaft of the first motor at the top of the support plate rotates, driving the left push rod to rotate. The rotation of the left push rod drives the workpiece and the right push rod to rotate, so that the magnetic powder is evenly attached to the surface of the workpiece. This reduces the energy consumption of the clamping mechanism, avoids the possibility of magnetic powder entering the first motor, and extends the service life of the first motor. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the external structure of this application from a top left view;

[0029] Figure 2 This is an enlarged schematic diagram of Part A of the structure of this application;

[0030] Figure 3 This is a schematic diagram of the right-side, upward-looking portion of the structure of this application;

[0031] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer casing from the left-side upward view of this application;

[0032] Figure 5 This is a schematic cross-sectional view of the left-side, upward-looking portion of the structure in this application;

[0033] Figure 6 This is an enlarged schematic diagram of Part B of this application.

[0034] In the diagram: 1. Outer casing; 101. Casing body; 102. Casing door; 2. Clamping mechanism; 201. Support plate; 202. First motor; 203. Left push rod; 204. Right push rod; 205. Clamping plate; 206. Controller; 3. Spraying mechanism; 301. Storage box; 302. Feed pipe; 303. Extraction pump; 304. Conveying pipe; 305. Outer pipe; 306. Fixing plate; 307. Dividing plate; 308. Spray nozzle; 4. Adjusting mechanism; 401. Two-way hydraulic rod; 402. Connecting plate; 403. Baffle pipe; 404. Protective box; 405. Second motor; 406. Rotating plate; 407. Arc plate. Detailed Implementation

[0035] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] Reference Figure 5 and Figure 6 This application provides a magnetic particle flaw detector spraying device, including an outer casing 1, a clamping mechanism 2 for fixing and rotating a workpiece, and a spraying mechanism 3 for uniformly spraying magnetic powder onto the surface of the workpiece. The spraying mechanism 3 has an adjustment mechanism 4 on its side for adjusting the spraying range. The adjustment mechanism 4 includes a baffle 403 and an arc-shaped plate 407. The inner wall of the baffle 403 is slidably connected to the surface of the spraying mechanism 3, and the surface of the arc-shaped plate 407 is in contact with the inner wall of the spraying mechanism 3. The spraying mechanism 3 is connected to a bidirectional hydraulic rod 401. Connecting plates 402 are connected to the bottom of both ends of the bidirectional hydraulic rod 401. The bottom of the connecting plates 402 is connected to one side of the top of the baffle 403. A protective box 404 is connected to the left side of the spray mechanism 3. A second motor 405 is connected to the left side of the inner wall of the protective box 404. A rotating plate 406 is connected to the output shaft of the second motor 405. One end of the rotating plate 406 is connected to the left side of the arc plate 407. The clamping mechanism 2 is connected to the left side of the outer box 1. The spray mechanism 3 is connected to the top of the outer box 1. The extension and retraction of the bidirectional hydraulic rod 401 drives the connecting plate 402 to move, which in turn drives the baffle 403 to move in opposite directions to adjust the length of the spray nozzle 308 to the target value. The output shaft of the second motor 405 inside the protective box 404 rotates, which drives the rotating plate 406 to rotate. The rotation of the rotating plate 406 drives the arc plate 407 to rotate, which adjusts the width of the spray nozzle 308 to a suitable value.

[0038] Reference Figure 1 In one aspect of this embodiment, the outer box 1 includes a box body 101 and a box door 102. The top of the box body 101 is connected to the spraying mechanism 3. The left side of the box door 102 is hinged to the left side of the inner wall of the box body 101. The box door 102 is made of transparent material. The box door 102 hinged to the box body 101 is opened.

[0039] Reference Figure 1 , Figure 2 and Figure 4In one aspect of this embodiment, the clamping mechanism 2 includes a support plate 201 and a right push rod 204. The right side of the support plate 201 is connected to the lower left side of the housing 101. A first motor 202 is connected to the top of the support plate 201. The output shaft of the first motor 202 is connected to a left push rod 203. The right side of the right push rod 204 is rotatably connected to the lower right side of the inner wall of the housing 101. One end of the left push rod 203 and one end of the right push rod 204 are both connected to a clamping plate 205. A controller 206 is connected to the upper left side of the housing 101. The controller 206 controls the operating status of each device of the spraying device. The controller 206 controls the left push rod 203 and the right push rod 204 to start extending until the clamping plate 205 is in contact with the side of the workpiece and fixes it. The output shaft of the first motor 202 at the top of the support plate 201 rotates, driving the left push rod 203 to rotate. The rotation of the left push rod 203 drives the workpiece and the right push rod 204 to rotate, so that the magnetic powder is evenly attached to the surface of the workpiece.

[0040] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 In one aspect of this embodiment, the spraying mechanism 3 includes a storage tank 301 and a feed pipe 302. The bottom of the storage tank 301 is connected to the center of the top of the housing 101, and the bottom of the feed pipe 302 is connected to the top of the storage tank 301. A pump 303 is connected to the front of the storage tank 301, and the bottom of the pump 303 is connected to the front of the top of the housing 101. A conveying pipe 304 is connected to the front of the pump 303, and the surface of the conveying pipe 304 is connected to the top of the housing 101. One end of the conveying pipe 304 is connected to an outer pipe 305, the left side of the outer pipe 305 is connected to the right side of the protective box 404, and the center of the left side of the outer pipe 305 is rotatably connected to the output shaft of the second motor 405. The outer tube 305 is slidably connected to the inner wall of the baffle 403 on both the left and right sides. The inner wall of the outer tube 305 is in contact with the surface of the arc plate 407. A dividing plate 307 is connected to the upper part of the inner wall of the outer tube 305. A spray nozzle 308 is opened at the bottom of the outer tube 305. A fixing plate 306 is connected to the center of the top of the outer tube 305. The top of the fixing plate 306 is connected to the top of the inner wall of the box 101. The center of the fixing plate 306 is connected to the surface of the bidirectional hydraulic rod 401. When the extraction pump 303 is started, the magnetic powder poured into the storage box 301 by the feed pipe 302 is transported to the outer tube 305 by the conveying pipe 304. Under the obstruction of the dividing plate 307, the magnetic powder is sprayed onto the surface of the workpiece through the spray nozzle 308.

[0041] All electrical devices in this plan are powered by an external power source.

[0042] Working principle: In use, open the door 102 hinged to the housing 101, allowing the workpiece to be positioned between the left push rod 203 and the right push rod 204. The controller 206 controls the left push rod 203 and the right push rod 204 to extend until the clamping plate 205 is in contact with the side of the workpiece and fixes it in place. Close the door 102, and the output shaft of the first motor 202 at the top of the support plate 201 rotates, driving the left push rod 203 to rotate. The rotation of the left push rod 203 causes the workpiece and the right push rod 204 to rotate. The bidirectional hydraulic rod 401 extends and retracts, causing the connecting plate 402 to move and the stop tube 403 to move. The length of the spray nozzle 308 is adjusted to the target value by moving it in opposite directions. The output shaft of the second motor 405 in the protective box 404 rotates, driving the rotating plate 406 to rotate. The rotating plate 406 rotates, driving the arc plate 407 to rotate, adjusting the width of the spray nozzle 308 to a suitable value. The center of the fixed plate 306 is connected to the surface of the bidirectional hydraulic rod 401. The extraction pump 303 is started, and the magnetic powder poured from the feed pipe 302 into the storage box 301 is transported by the conveying pipe 304 to the outer pipe 305. Under the obstruction of the dividing plate 307, the magnetic powder is sprayed from the spray nozzle 308 onto the surface of the workpiece.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetic particle flaw detector spraying device, comprising an outer casing (1), a clamping mechanism (2) for fixing and rotating a workpiece, and a spraying mechanism (3) for uniformly spraying magnetic powder onto the surface of the workpiece, characterized in that: The spraying mechanism (3) is provided with an adjustment mechanism (4) on its side for adjusting the spraying range. The adjustment mechanism (4) includes a baffle (403) and an arc plate (407). The inner wall of the baffle (403) is slidably connected to the surface of the spraying mechanism (3). The surface of the arc plate (407) is in contact with the inner wall of the spraying mechanism (3). The clamping mechanism (2) is connected to the left side of the outer box (1). The spraying mechanism (3) is connected to the top of the outer box (1).

2. The spraying device for a magnetic particle flaw detector according to claim 1, characterized in that: The adjustment mechanism (4) further includes a bidirectional hydraulic rod (401) and a connecting plate (402). The surface of the bidirectional hydraulic rod (401) is connected to the spraying mechanism (3). The top of the connecting plate (402) is connected to the bottom of the left and right ends of the bidirectional hydraulic rod (401). The bottom of the connecting plate (402) is connected to the top side of the baffle (403).

3. The spraying device for a magnetic particle flaw detector according to claim 2, characterized in that: The adjustment mechanism (4) also includes a protective box (404) and a second motor (405). The right side of the protective box (404) is connected to the left side of the spray mechanism (3). The second motor (405) is connected to the left side of the inner wall of the protective box (404). The output shaft of the second motor (405) is connected to a rotating plate (406). One end of the rotating plate (406) is connected to the left side of the arc plate (407).

4. The spraying device for a magnetic particle flaw detector according to claim 1, characterized in that: The outer box (1) also includes a box body (101) and a box door (102). The top of the box body (101) is connected to the spraying mechanism (3), and the left side of the box door (102) is hinged to the left side of the inner wall of the box body (101).

5. The spraying device for a magnetic particle flaw detector according to claim 4, characterized in that: The clamping mechanism (2) includes a support plate (201) and a right push rod (204). The right side of the support plate (201) is connected to the lower left side of the box (101). The top of the support plate (201) is connected to a first motor (202). The output shaft of the first motor (202) is connected to a left push rod (203). The right side of the right push rod (204) is rotatably connected to the lower right side of the inner wall of the box (101).

6. The spraying device for a magnetic particle flaw detector according to claim 5, characterized in that: The clamping mechanism (2) further includes a clamping plate (205) and a controller (206). The clamping plate (205) is connected to one end of the left push rod (203) and one end of the right push rod (204), respectively. The right side of the controller (206) is connected to the upper left side of the housing (101).

7. The spraying device for a magnetic particle flaw detector according to claim 6, characterized in that: The spraying mechanism (3) includes a storage tank (301) and a feed pipe (302). The bottom of the storage tank (301) is connected to the center of the top of the box body (101). The bottom of the feed pipe (302) is connected to the top of the storage tank (301). A pump (303) is connected to the front side of the storage tank (301). The bottom of the pump (303) is connected to the front side of the top of the box body (101). A conveying pipe (304) is connected to the front side of the pump (303). The surface of the conveying pipe (304) is connected to the top of the box body (101).

8. The spraying device for a magnetic particle flaw detector according to claim 7, characterized in that: The spraying mechanism (3) also includes an outer tube (305) and a fixing plate (306). The top right side of the outer tube (305) is connected to one end of the conveying pipe (304), the left side of the outer tube (305) is connected to the right side of the protective box (404), the center of the left side of the outer tube (305) is rotatably connected to the output shaft of the second motor (405), both sides of the outer tube (305) are slidably connected to the inner wall of the baffle (403), the inner wall of the outer tube (305) is in contact with the surface of the arc plate (407), a dividing plate (307) is connected above the inner wall of the outer tube (305), a spray nozzle (308) is opened at the bottom of the outer tube (305), the bottom of the fixing plate (306) is connected to the center of the top of the outer tube (305), the top of the fixing plate (306) is connected to the top of the inner wall of the box (101), and the center of the fixing plate (306) is connected to the surface of the bidirectional hydraulic rod (401).

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