A powder spraying mechanism for a pressure vessel

Abstract

The utility model relates to a pressure container powder spraying mechanism belongs to powder spraying equipment technical field, including powder spraying cylinder, be equipped with vertical powder spraying pipe in powder spraying cylinder, the inside of powder spraying pipe has the powder spraying head fixedly up and down, and powder spraying pipe is connected with infusion pipe, and the other end of infusion pipe is connected with liquid pump, and the other end of liquid pump is connected with liquid storage jar through pipeline, and the bottom of powder spraying cylinder middle is fixed with bottom spray head, and the top of bottom spray head is equipped with elevating system, and elevating system is connected with rotating electrical machine, and the output shaft fixed connection of rotating electrical machine has fixed end head. The utility model discloses through elevating system and fixed end head can drive pressure container to go in and out powder spraying cylinder, and the pressure container is sprayed to in powder spraying cylinder through powder spraying head, and the pressure container can be driven to rotate through rotating electrical machine, and powder spraying is more uniform, and better prevent the magnetic powder suspension spatter when powder spraying, cause pollution.

Description

Technical Field

[0001] This utility model relates to a powder spraying mechanism for pressure vessels, belonging to the technical field of powder spraying equipment. Background Technology

[0002] Magnetic particle testing is a non-destructive testing method that uses the magnetic traces formed by magnetic particles being attracted to defects on the surface of a pressure vessel in a strong magnetic field to reveal defects. Before magnetic particle testing, a magnetic particle suspension is sprayed onto the surface of the pressure vessel, and then inspectors use magnetic particle testing equipment to perform the testing. However, currently, the magnetic particle is sprayed manually, resulting in uneven distribution of the magnetic particle suspension on the pressure vessel surface, affecting the accuracy of the testing results. Furthermore, the magnetic particle suspension is prone to spillage during spraying, causing contamination. Utility Model Content

[0003] This invention provides a powder spraying mechanism for pressure vessels, which solves the problems existing in the background art.

[0004] This utility model relates to a powder spraying mechanism for a pressure vessel, including a powder spraying cylinder, a vertical powder spraying pipe inside the powder spraying cylinder, powder spraying nozzles fixed at the top and bottom of the inner side of the powder spraying pipe, a liquid delivery pipe connected to the powder spraying pipe, a liquid pump connected to the other end of the liquid delivery pipe, and a liquid storage tank connected to the other end of the liquid pump through a pipe, a bottom nozzle fixed in the middle of the bottom of the powder spraying cylinder, a lifting mechanism provided directly above the bottom nozzle, a rotary motor connected to the lifting mechanism, and a fixed end fixedly connected to the output shaft of the rotary motor.

[0005] As a preferred embodiment, multiple fixed ends are provided, with different diameters, and these fixed ends are detachably mounted on the bottom of the output shaft of the rotary motor via bolts. By changing the fixed ends, pressure vessels of various diameters can be accommodated.

[0006] As a preferred embodiment, the infusion tube is fitted with a fixing sleeve, which is fixed to the powder spraying cylinder. The fixing sleeve is equipped with a locking bolt. A corrugated pipe is installed on the infusion tube outside the fixing sleeve. An infusion hose is fixed to the bottom of the powder spraying tube, and the other end of the infusion hose is fixedly connected to the bottom nozzle. The position of the powder spraying tube can be adjusted according to the diameter of the powder spraying cylinder.

[0007] As a preferred embodiment, the inner wall of the fixing sleeve is provided with a guide groove, and a guide block is provided in the guide groove along the axial direction of the infusion tube. The guide block is fixed to the outer wall of the infusion tube. This prevents relative rotation between the infusion tube and the fixing sleeve, which could cause the powder spraying tube to become misaligned.

[0008] As a preferred embodiment, a vertical cleaning nozzle is fixed to the inner wall of the powder spraying cylinder. The inner wall of the cleaning nozzle is equipped with a cleaning nozzle that sprays liquid towards the central axis of the powder spraying cylinder. A cleaning pipe is connected to the bottom of the cleaning nozzle, and the other end of the cleaning pipe is connected to the outlet of a liquid pump. The inlet of the liquid pump is connected to a water suction pipe, which is connected to a clean water tank. This allows for convenient cleaning of pressure vessels.

[0009] As a preferred embodiment, the lifting mechanism includes a lifting column, a mounting frame fixed to the bottom of the lifting column, a rotary motor fixed to the mounting frame, a rack fixed to one side of the lifting column, a lifting slide rail fixed to the side of the lifting column away from the rack, a lifting slider connected to the lifting slide rail, a U-shaped mounting plate fixedly mounted on the lifting slider, a movable slide plate fixedly connected to the mounting plate, a drive shaft rotatably mounted on the mounting plate, a drive gear meshing with the rack fixed on the drive shaft, a lifting motor fixed to the drive shaft, and the lifting motor fixed to the movable slide plate. This allows for convenient movement of the pressure vessel into the powder spraying cylinder.

[0010] As a preferred embodiment, a movable slider is fixed to the bottom of the movable slide, the movable slider is connected to a movable slide rail, a gantry is fixed to the bottom of the movable slide rail, and synchronous pulleys are rotatably installed at both ends of the gantry. The two synchronous pulleys are connected by a synchronous belt, and a movable motor is fixedly connected to one of the synchronous pulleys. The movable motor is fixed on the gantry.

[0011] As a preferred embodiment, a waste liquid collection tank is provided below the powder spraying cylinder, and a drain pipe connected to the waste liquid collection tank is provided at the bottom of the powder spraying cylinder. The waste liquid collection tank is connected to a suction pipe, the other end of which is connected to the inlet of a liquid pump. The outlet of the liquid pump is connected to a waste liquid reuse conveying pipe. This allows for the centralized collection of waste liquid, which can then be recycled and reused, reducing waste.

[0012] As a preferred embodiment, a base plate is provided on the lower left side of the gantry frame, and a placement rack is mounted on the base plate. A placement plate is fixed to the top of the placement rack, and the placement plate has multiple placement holes evenly distributed along the left and right direction. The pressure vessel to be processed can be placed in the placement holes for easy installation.

[0013] This utility model has the following beneficial effects:

[0014] The pressure vessel can be lifted and lowered into and out of the powder spraying cylinder by the lifting mechanism and fixed end. Powder is sprayed onto the pressure vessel through the powder spraying nozzle inside the powder spraying cylinder. The powder spraying pressure vessel can be rotated by a rotary motor, which makes the powder spraying more uniform and better prevents the magnetic powder suspension from spilling and causing pollution during the powder spraying process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 for Figure 1Partial structural diagram;

[0017] Figure 3 This is a schematic diagram of a structure with a shelf.

[0018] Figure 4 This is a schematic diagram of a structure with a waste liquid collection tank;

[0019] In the diagram: 1. Clean water tank; 2. Storage tank; 3. Liquid pump; 4. Infusion pipe; 5. Corrugated pipe; 6. Cleaning pipe; 7. Powder spraying cylinder; 8. Fixed end; 9. Rotary motor; 10. Powder spraying pipe; 11. Moving slide plate; 12. Lifting column; 13. Rack; 14. Moving slide rail; 15. Gantry frame; 16. Moving motor; 17. Lifting motor; 18. Placement rack; 19. Placement plate; 20. Placement base plate; 21. Waste liquid collection tank; 22. Liquid extraction pipe; 23. Waste liquid reuse conveying pipe; 24. Fixed sleeve; 25. Cleaning spray pipe. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, as Figures 1 to 4 As shown, this utility model is a powder spraying mechanism for a pressure vessel, including a powder spraying cylinder 7, a vertical powder spraying pipe 10 inside the powder spraying cylinder 7, powder spraying nozzles fixed at the top and bottom of the inner side of the powder spraying pipe 10, a liquid delivery pipe 4 connected to the powder spraying pipe 10, a liquid pump 3 connected to the other end of the liquid delivery pipe 4, and a liquid storage tank 2 connected to the other end of the liquid pump 3 through a pipe. A bottom nozzle is fixed in the middle of the bottom of the powder spraying cylinder 7, and a lifting mechanism is provided directly above the bottom nozzle. The lifting mechanism is connected to a rotary motor 9, and a fixed end 8 is fixedly connected to the output shaft of the rotary motor 9. The top of the fixed end 8 is a convex arc shape, and a connecting disc is provided at the bottom of the output shaft of the rotary motor 9. The fixed end 8 is fixed in the threaded hole of the connecting disc by bolts. A mounting flange is provided on the outer side of the fixed end 8 for connection with the top flange of the pressure vessel to be tested.

[0022] During operation, the lifting mechanism raises the fixed end 8, and then the flange of the pressure vessel to be tested is fixed to the mounting flange of the fixed end 8 with bolts. Then, the lifting mechanism lowers the fixed end 8, and the rotary motor 9 rotates the pressure vessel to be tested. At this time, the liquid pump 3 draws magnetic powder suspension from the storage tank 2 and atomizes it from the powder spraying nozzle and bottom nozzle in the powder spraying cylinder 7 to uniformly spray powder onto the outer wall of the pressure vessel to be tested. After the powder spraying is completed, the liquid pump 3 is turned off, and then the lifting mechanism raises the fixed end 8 to lift the pressure vessel to be tested out of the powder spraying cylinder 7. Then, the magnetic particle inspection can be performed manually.

[0023] In Example 2, based on Example 1, multiple fixed ends 8 are provided, each with a different diameter. These multiple fixed ends 8 are detachably mounted on the bottom of the output shaft of the rotary motor 9 using bolts. Before operation, a suitable fixed end 8 is selected based on the diameter of the pressure vessel to be tested.

[0024] The infusion tube 4 is fitted with a fixing sleeve 24, which is fixed to the powder spraying cylinder 7. The fixing sleeve 24 is equipped with a locking bolt. A corrugated pipe 5 is attached to the infusion tube 4 outside the fixing sleeve 24. An infusion hose is fixed to the bottom of the powder spraying tube 10, and the other end of the infusion hose is fixedly connected to the bottom nozzle. Before operation, the locking bolt can be loosened, and the left and right positions of the infusion tube 4 within the fixing sleeve 24 can be moved to adjust the left and right positions of the powder spraying nozzle. After adjustment, the locking bolt should be tightened.

[0025] The inner wall of the fixed sleeve 24 is provided with a guide groove, and a guide block is provided in the guide groove along the axial direction of the infusion tube 4. The guide block is fixed on the outer wall of the infusion tube 4.

[0026] A vertical cleaning nozzle 25 is fixed on the inner wall of the powder spraying cylinder 7. A cleaning nozzle is provided on the inner side wall of the cleaning nozzle 25, spraying liquid towards the central axis of the powder spraying cylinder 7. A cleaning pipe 6 is connected to the bottom of the cleaning nozzle 25, and the other end of the cleaning pipe 6 is connected to the outlet of the liquid pump 3. A water suction pipe is connected to the inlet of the liquid pump 3, and the water suction pipe is connected to a clean water tank 1. After flaw detection of the pressure vessel is completed, the lifting mechanism drives the fixed end 8 to descend, and the rotary motor 9 drives the pressure vessel to be tested to rotate. The liquid pump 3 draws clean water from the clean water tank 1 and then sprays it out through the cleaning nozzle of the cleaning nozzle 25 via the cleaning pipe 6 to clean the outer wall of the pressure vessel.

[0027] The lifting mechanism includes a lifting column 12, with a mounting bracket fixed to its bottom. A rotary motor 9 is fixed to the mounting bracket. A rack 13 is fixed to one side of the lifting column 12, and a lifting slide rail is fixed to the side of the lifting column 12 away from the rack 13. A lifting slider is connected to the lifting slide rail, and a U-shaped mounting plate is fixedly mounted on the lifting slider. A movable slide plate 11 is fixedly connected to the mounting plate, and a drive shaft is rotatably mounted on the mounting plate. A drive gear that meshes with the rack 13 is fixed on the drive shaft, and a lifting motor 17 is fixed to the drive shaft and mounted on the movable slide plate 11. When the lifting motor 17 rotates, it drives the drive shaft to rotate, which in turn drives the drive gear to rotate. This, in turn, drives the lifting column 12 to move vertically up and down along the lifting slide rail and the guide of the lifting slider via the rack 13.

[0028] A movable slider is fixed to the bottom of the movable slide plate 11. The movable slider is connected to a movable slide rail 14. A gantry frame 15 is fixed to the bottom of the movable slide rail 14. Synchronous pulleys are rotatably mounted at both ends of the gantry frame 15. The two synchronous pulleys are connected by a synchronous belt. A movable motor 16 is fixedly connected to one of the synchronous pulleys and is fixed to the gantry frame 15. The rotation of the movable motor 16 drives the synchronous pulley to rotate, thereby driving the synchronous belt to rotate around the synchronous pulley, which in turn drives the movable slide plate 11 to slide along the movable slide rail 14. This allows the pressure vessel to be tested to move closer to and away from the powder spraying cylinder 7, facilitating the installation and removal of the pressure vessel and enabling manual magnetic particle inspection. The inner wall of the liquid pump 3 is lined with a fluorine layer. The liquid pump 3 is made of stainless steel, as are the aforementioned pipes, the powder spraying cylinder 7, and the storage tank 2.

[0029] Below the powder spraying cylinder 7 is a waste liquid collection tank 21. At the bottom of the powder spraying cylinder 7 is a drain pipe connected to the waste liquid collection tank 21. The waste liquid collection tank 21 is connected to a suction pipe 22, the other end of which is connected to the inlet of a liquid pump 3. The outlet of the liquid pump 3 is connected to a waste liquid reuse conveying pipe 23. Waste liquid from powder spraying and cleaning flows into the waste liquid collection tank 21 through the drain pipe. When cleaning is required, the valves on the waste liquid reuse conveying pipe 23 and the suction pipe 22 can be opened, while the valves on the suction pipe, cleaning pipe 6, delivery pipe 4, and the bottom pipe of the storage tank 2 can be closed to convey the waste liquid out for reuse and reconstitution.

[0030] A base plate 20 is located on the lower left side of the gantry frame 15. A placement rack 18 is mounted on the base plate 20. A placement plate 19 is fixed to the top of the placement rack 18. The placement plate 19 has multiple placement holes evenly distributed along the left and right directions. A positioning groove is provided on the top of the base plate 20, and a positioning boss that mates with the positioning groove is provided on the bottom of the placement rack 18.

[0031] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A powder spraying mechanism for a pressure vessel, characterized in that: The device includes a powder spraying cylinder (7), a vertical powder spraying pipe (10) inside the powder spraying cylinder (7), powder spraying nozzles fixed on the upper and lower sides of the inner side of the powder spraying pipe (10), a liquid infusion pipe (4) connected to the powder spraying pipe (10), a liquid pump (3) connected to the other end of the liquid infusion pipe (4), a liquid storage tank (2) connected to the other end of the liquid pump (3) through a pipe, a bottom nozzle fixed in the middle of the bottom of the powder spraying cylinder (7), a lifting mechanism provided directly above the bottom nozzle, a rotary motor (9) connected to the lifting mechanism, and a fixed end (8) fixedly connected to the output shaft of the rotary motor (9).

2. The pressure vessel powder spraying mechanism according to claim 1, characterized in that: Multiple fixed ends (8) are provided, and the diameters of the multiple fixed ends (8) are not equal. The multiple fixed ends (8) are detachably installed at the bottom of the output shaft of the rotary motor (9) by bolts.

3. The pressure vessel powder spraying mechanism according to claim 2, characterized in that: The infusion tube (4) is fitted with a fixing sleeve (24), which is fixed on the powder spraying cylinder (7). The fixing sleeve (24) is equipped with a locking bolt. A corrugated pipe (5) is provided on the infusion tube (4) outside the fixing sleeve (24). The bottom of the powder spraying tube (10) is fixed with an infusion hose, and the other end of the infusion hose is fixedly connected to the bottom nozzle.

4. The pressure vessel powder spraying mechanism according to claim 3, characterized in that: The inner wall of the fixed sleeve (24) is provided with a guide groove, and a guide block is provided in the guide groove along the axial direction of the infusion tube (4). The guide block is fixed on the outer wall of the infusion tube (4).

5. A pressure vessel powder spraying mechanism according to claim 1, characterized in that: A vertical cleaning nozzle (25) is fixed on the inner wall of the powder spraying cylinder (7). A cleaning nozzle that sprays liquid toward the central axis of the powder spraying cylinder (7) is provided on the inner side wall of the cleaning nozzle (25). A cleaning pipe (6) is connected to the bottom of the cleaning nozzle (25). The other end of the cleaning pipe (6) is connected to the outlet of the liquid pump (3). A water pump (3) is connected to the inlet of the liquid pump (3). A water pump is connected to the water pump (3). A clean water tank (1) is connected to the water pump (3).

6. The pressure vessel powder spraying mechanism according to claim 1, characterized in that: The lifting mechanism includes a lifting column (12), a mounting frame is fixed at the bottom of the lifting column (12), a rotary motor (9) is fixed on the mounting frame, a rack (13) is fixed on one side of the lifting column (12), a lifting slide rail is fixed on the side of the lifting column (12) away from the rack (13), a lifting slider is connected to the lifting slide rail, a U-shaped mounting plate is fixedly installed on the lifting slider, a movable slide plate (11) is fixedly connected to the mounting plate, a drive shaft is rotatably installed on the mounting plate, a drive gear that meshes with the rack (13) is fixed on the drive shaft, a lifting motor (17) is fixed on the drive shaft, and the lifting motor (17) is fixed on the movable slide plate (11).

7. A pressure vessel powder spraying mechanism according to claim 6, characterized in that: The bottom of the movable slide (11) is fixed with a movable slider, the movable slider is connected to a movable slide rail (14), the bottom of the movable slide rail (14) is fixed with a gantry frame (15), the two ends of the gantry frame (15) are rotatably mounted with synchronous pulleys, the two synchronous pulleys are connected by a synchronous belt, one of the synchronous pulleys is fixedly connected to a movable motor (16), and the movable motor (16) is fixed on the gantry frame (15).

8. A pressure vessel powder spraying mechanism according to claim 1, characterized in that: Below the powder spraying cylinder (7) is a waste liquid collection tank (21). At the bottom of the powder spraying cylinder (7) is a drain pipe that connects to the waste liquid collection tank (21). The waste liquid collection tank (21) is connected to a liquid extraction pipe (22). The other end of the liquid extraction pipe (22) is connected to the inlet of the liquid pump (3). The outlet of the liquid pump (3) is connected to a waste liquid reuse conveying pipe (23).

9. A pressure vessel powder spraying mechanism according to claim 7, characterized in that: A placement base plate (20) is provided on the lower left side of the gantry frame (15). A placement rack (18) is provided on the placement base plate (20). A placement plate (19) is fixed on the top of the placement rack (18). The placement plate (19) has multiple placement holes evenly provided in the left and right directions.

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