A spray gun changing device and method of use thereof

Abstract

The application discloses a kind of spray gun replacement device and its use method, with: spray gun and positioning ring, positioning ring is set along the outside of spray gun Circumferentially;Suspension assembly;Including suspension arm;Lifting assembly;Including lifting device;Hydraulic component;Including gripper, gripper is used to hold positioning ring;When gripper and the side of positioning ring contact, gripper slides downwards, to generate the upward thrust of spray gun, so that spray gun is tightly pushed upwards, to realize fixed spray gun;The device is used for spray gun replacement, and the use method of the above-mentioned device is disclosed, the flange or bolt connection of spray gun and spray pipe in prior art gun replacement device is omitted, spray gun can be conveniently replaced without manual assistance, and work efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of spray gun replacement technology, specifically a spray gun replacement device and its usage method. Background Technology

[0002] Spray guns are widely used in steel smelting technology. They desulfurize and dephosphorize molten iron by spraying powder. However, spray guns have a limited service life and need to be replaced in time after a period of use. During the replacement process, since spray guns are mostly connected and fixed to the nozzle by flanges or other bolts, manual assistance is required. Each replacement takes a long time and is labor-intensive.

[0003] Chinese utility model patent CN212457880U discloses a quick lance changing device in the field of molten reduction ironmaking. Although this device changes the traditional way of changing lances and solves the problems of cumbersome lance changing, long time and low work efficiency in operation, the lance and nozzle of this device are still connected by flanges. The replacement process requires manual disassembly, which is labor-intensive.

[0004] Therefore, the present invention provides a spray gun replacement device to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a spray gun replacement device to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] The present invention also provides a method for using the above-described device.

[0007] Specifically, the first aspect of this invention discloses a spray gun replacement device, comprising:

[0008] A spray gun and a positioning ring, wherein the positioning ring is arranged circumferentially along the outer side of the spray gun;

[0009] Suspension components; including suspension arms;

[0010] Lifting components; including lifting devices;

[0011] A hydraulic assembly; including a gripper for gripping the positioning ring;

[0012] When the gripper contacts the side of the positioning ring, the gripper slides downward, thereby generating an upward thrust.

[0013] One technical solution of the spray gun replacement device according to the present invention has at least the following technical effects:

[0014] Taking the spray gun loading state as an example, the device uses a suspension assembly to hoist the spray gun to a predetermined position, and then uses a lifting assembly to raise or lower the spray gun. The hydraulic component's clamp holds the spray gun on the positioning ring. When the clamp contacts the side of the positioning ring, the clamp slides downward along the positioning ring, thereby generating an upward component force on the spray gun, causing the spray gun to be pressed upward to achieve the fixation of the spray gun. The device can also be used to disassemble old guns, eliminating the flange or bolt connection between the spray gun and the nozzle in the existing gun replacement device. During the replacement process, the spray gun can be easily replaced without manual assistance, improving work efficiency.

[0015] As a further embodiment of the present invention: the positioning ring is provided with an inward inclined surface, and the clamp is provided with a groove corresponding to the inclined surface of the positioning ring.

[0016] Because the positioning ring has an inward inclined surface and the clamp has a groove corresponding to the inclined surface of the positioning ring, when the inclined surface of the positioning ring contacts the inclined surface of the groove of the clamp, sliding occurs, thereby generating an upward component force. Then the component force is transferred from the positioning ring to the spray gun. When the upward component force is greater than the gravity, the top of the spray gun will align with the gravity.

[0017] As a further embodiment of the present invention: the suspension assembly further includes a hanger having a retractable movable end, and the suspension arm is fixedly connected to the movable end of the hanger.

[0018] Because the hanger has a retractable movable end, and the suspension arm is fixedly connected to the movable end of the hanger, the hanger can drive the suspension arm to lift the spray gun.

[0019] As a further embodiment of the present invention: the lifting assembly further includes a lifting guide rail disposed at the lower end of the lifting device, and a supporting outer tube is slidably disposed on the lifting guide rail.

[0020] Since the lifting assembly is also equipped with a lifting guide rail, and a supporting outer tube is slidably mounted on the lifting guide rail, the supporting outer tube can be raised or lowered to meet and fix the spray gun.

[0021] As a further embodiment of the present invention: the outer support tube is provided with an inner support tube, and the inner support tube is connected to the spray gun.

[0022] Because an inner support tube is installed inside the outer support tube, and the inner support tube is connected to the spray gun, when the lifting component moves the outer support tube up or down, it also moves the inner support tube and the spray gun up or down.

[0023] As a further embodiment of the present invention: a sealing ring is provided on the top of the spray gun, and the inner support tube is detachably connected to the spray gun through the sealing ring.

[0024] As a further embodiment of the present invention: the device is further provided with a reserved tube, the sealing ring is provided with a through hole, and the inner tube of the spray gun is detachably connected to the reserved tube through the through hole.

[0025] Because the spray gun has a sealing ring at the top, the inner tube of the support is detachably connected to the spray gun through the sealing ring, and a through hole is provided on the sealing ring. The inner tube of the spray gun is detachably connected to the reserved tube provided in the device through the through hole. The inner tube of the spray gun is detachably connected to the reserved tube through the sealing ring, thus eliminating the need for the flange connection between the traditional spray gun and the spray pipe, eliminating the need for manual assistance, and improving work efficiency.

[0026] As a further embodiment of the present invention: the hydraulic assembly further includes a hydraulic cylinder and a hydraulic pipe, the hydraulic cylinder being disposed outside the outer support pipe and communicating with the outer support pipe through the hydraulic pipe.

[0027] As a further embodiment of the present invention: the clamp is fixedly mounted on the output end of the hydraulic cylinder.

[0028] Since the clamp is fixedly installed at the output end of the hydraulic cylinder, when the lifting assembly moves the spray gun to the gun changing position, the hydraulic cylinder pushes the clamp to clamp the positioning ring on the spray gun.

[0029] The invention also discloses a method for using the spray gun replacement device, including the following steps:

[0030] S1. When loading the gun, the hanger extends its hanging arm to lift the spray gun to the predetermined position;

[0031] S2. Lower the lifting device to the gun changing position, and the hydraulic cylinder pushes the clamp to hold the positioning ring on the spray gun.

[0032] S3. Slide the clamp downwards to lift the spray gun upwards and connect it with the reserved tube. Then retract the suspension arm to complete the gun loading.

[0033] S4. When disassembling the gun, lower the lifting device to the gun changing position, extend the suspension arm of the hanger, support the spray gun, and then release the positioning ring of the clamp.

[0034] S5. The suspension arm retracts, lifting the spray gun to the designated position to complete the disassembly.

[0035] The method of using this spray gun replacement device is based on the cooperation between the various components of the device and the structure of the spray gun. It eliminates the need to connect the spray gun to the reserved pipe using flanges or other bolts, so that the spray gun can be easily replaced without manual assistance, thus improving work efficiency. Attached Figure Description

[0036] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0037] Figure 1 A front view of a spray gun replacement device;

[0038] Figure 2 This is a partial enlarged view of point A of a spray gun replacement device;

[0039] Figure 3 This is a magnified view of part B of a spray gun replacement device.

[0040] Figure label:

[0041] 1. Drive motor; 2. Reducer; 3. Lifting device; 4. Lifting guide rail; 5. Reserved pipe; 6. Coupling; 7. Flange; 8. Support inner pipe; 9. Sealing ring; 10. Support outer pipe; 11. Spray gun; 12. Hydraulic pipe; 13. Hydraulic cylinder; 14. Clamp; 15. Positioning ring; 16. Chuck; 17. Suspension arm; 18. Suspension device. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0043] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0044] like Figure 1 According to an embodiment of the present invention, a spray gun replacement device includes: a spray gun 11 and a positioning ring 15, the positioning ring 15 being arranged circumferentially along the outer side of the spray gun 11; a suspension assembly including a suspension arm 17; a lifting assembly including a lifting device 3; a hydraulic assembly including a clamp 14, the clamp 14 being used to clamp the positioning ring 15; when the clamp 14 contacts the side of the positioning ring 15, the clamp 14 slides downward, thereby generating an upward thrust on the spray gun 11.

[0045] Taking the spray gun loading state as an example, the spray gun replacement device uses a suspension assembly to hoist the spray gun 11 to a predetermined position, and then uses a lifting assembly to drive the spray gun 11 to rise or fall. The hydraulic component's clamp 14 clamps the positioning ring 15 set on the spray gun 11. When the clamp 14 contacts the side of the positioning ring 15, the clamp 14 slides downward along the positioning ring 15, thereby generating an upward component force on the spray gun 11, causing the spray gun 11 to be pressed upward to fix the spray gun 11. This device can also be used to disassemble old guns, eliminating the need for flanges or other bolts connecting the spray gun 11 to the nozzle in the existing technology. The spray gun 11 can be easily replaced without manual assistance, improving work efficiency.

[0046] like Figure 1 and Figure 2 As shown, the positioning ring 15 has an inwardly inclined surface, and the clamp 14 has a groove corresponding to the inclined surface of the positioning ring 15. Specifically, when the inclined surface of the positioning ring 15 contacts the inclined surface of the groove of the clamp 14, sliding occurs, thereby generating an upward component force on the spray gun 11. Then, the component force is applied to the spray gun 11 by the positioning ring 15. When the upward component force is greater than the gravity, the spray gun 11 will be pressed upward to fix the spray gun 11. The inclined surface of the positioning ring 15 and the inclined surface of the groove of the clamp 14 are 35°-55°, preferably 45°.

[0047] As another embodiment of the present invention, the inward inclined surface of the positioning ring 15 and the groove of the clamp 14 can be configured as a matching "arc-shaped surface" or "wedge-shaped surface". The "arc-shaped surface" or "wedge-shaped surface" of the positioning ring 15 and the corresponding inclined surface of the groove of the clamp 14 are 35°-55°, preferably 45°. Similarly, when the "arc-shaped surface" or "wedge-shaped surface" of the positioning ring 15 contacts the corresponding inclined surface of the groove of the clamp 14, sliding can occur, thereby generating an upward component force on the spray gun 11.

[0048] like Figure 1 As shown, the suspension assembly also includes a hanger 18, which has a retractable movable end, and a suspension arm 17 is fixedly connected to the movable end of the hanger 18; specifically, the hanger 18 has a retractable movable end, and the suspension arm 17 is fixedly connected to the movable end of the hanger 18, and the hanger 18 is used to drive the suspension arm 17 to lift the spray gun 11.

[0049] A chuck 16 is provided above the suspension arm 17. The chuck 16 is engaged with the spray gun 11 and is used to support the spray gun 11 when it is replaced.

[0050] like Figure 1As shown, the lifting assembly also includes a lifting guide rail 4 disposed at the lower end of the lifting device 3. A supporting outer tube 10 is slidably disposed on the lifting guide rail 4. Specifically, the lifting assembly is also provided with a lifting guide rail 4, on which a supporting outer tube 10 is slidably disposed. Therefore, the supporting outer tube 10 can be driven to rise or fall, and is used to abut and fix the spray gun 11 when the spray gun 11 is replaced.

[0051] like Figure 1 As shown, the outer support tube 10 is provided with an inner support tube 8, which is connected to the top of the spray gun 11. Specifically, the inner support tube 8 is connected to the top of the spray gun 11. When the lifting component drives the outer support tube 10 to rise or fall, it also drives the inner support tube 8 and the spray gun 11 to rise or fall at the same time.

[0052] The outer support tube 10 and the inner support tube 8 are provided with flanges 7 at their top ends, and the lower end of the lifting assembly is provided with a coupling 6. The lifting assembly is connected to the flanges 7 at the top ends of the outer support tube 10 and the inner support tube 8 through the coupling 6.

[0053] like Figure 1 and Figure 3 As shown, a sealing ring 9 is provided on the top of the spray gun 11, and the inner support tube 8 is detachably connected to the spray gun 11 through the sealing ring 9; the spray gun replacement device is also provided with a reserved tube 5, and the sealing ring 9 is provided with a through hole, through which the inner tube of the spray gun 11 is detachably connected to the reserved tube 5; specifically, the inner support tube 8 is fixedly connected to the top of the spray gun 11, the top of the spray gun 11 is provided with a sealing ring 9, and the inner support tube 8 is fixedly connected to the spray gun 11 through the sealing ring 9; the spray gun replacement device is also provided with a reserved tube 5, and the sealing ring 9 is provided with a through hole, through which the inner tube of the spray gun 11 is detachably connected to the reserved tube 5, thereby achieving the fixation of the spray gun 11.

[0054] like Figure 1 As shown, the hydraulic assembly also includes a hydraulic cylinder 13 and a hydraulic pipe 12. The hydraulic cylinder 13 is located outside the outer support pipe 10 and is connected to the outer support pipe 10 through the hydraulic pipe 12. The clamp 14 is fixedly located at the output end of the hydraulic cylinder 13. When the lifting assembly moves the spray gun 11 to the gun changing position, the hydraulic cylinder 13 pushes the clamp 14 to clamp the positioning ring 15 on the spray gun 11.

[0055] like Figure 1 As shown, the device also includes a drive motor 1 and a reducer 2 connected to one end of the drive motor 1. The drive motor 1 is located between the lifting guide rail 4 and the supporting outer tube 10. The drive motor 1 is used to drive the various components of the device to cooperate in replacing the spray gun 11. The reducer 2 is used to decelerate the lifting components when replacing the spray gun 11 so as to lift and lower them to the predetermined gun replacement position.

[0056] The invention also discloses a method for using the spray gun replacement device, including the following steps: when installing the gun, the hanger 18 extends the hanger arm 17 to lift the spray gun 11 to the predetermined position; the lifting device is lowered to the gun replacement position, and the hydraulic cylinder 13 pushes the clamp 14 to clamp the positioning ring 15 on the spray gun 11; the clamp 14 slides down to lift the spray gun 11 to the top and connect with the reserved tube 5, and the hanger arm 17 is retracted to complete the gun installation.

[0057] When disassembling the spray gun, the lifting device is lowered to the gun replacement position, the suspension device 18 extends the suspension arm 17, the suspension arm 17 supports the spray gun 11, and then the clamp 14 releases the positioning ring 15; the suspension device 18 retracts the suspension arm 17, and the spray gun 11 is hoisted to the predetermined position to complete the disassembly.

[0058] Specifically, when it is necessary to load the gun, the drive motor 1 starts, the drive suspension 18 extends the suspension arm 17, and the lifting device 3 descends to the gun changing position. At this time, the hydraulic cylinder 13 pushes the clamp 14 to clamp the positioning ring 15 of the spray gun 11. When the inclined surface of the positioning ring 15 contacts the inclined surface of the groove of the clamp 14, it slides, thereby generating an upward component force. Then the component force is applied to the spray gun 11 by the positioning ring 15. When the upward component force is greater than the gravity, the spray gun 11 will be pressed upward. Through the sealing ring 9 at the top of the spray gun 11, the spray gun 11 and the reserved tube 5 are detachably sealed and connected, thus completing the gun loading.

[0059] When it is necessary to disassemble the spray gun, the drive motor 1 starts, the lifting device 3 descends to the gun replacement position, the drive suspension 18 extends the suspension arm 17, and the suspension arm 17 supports the spray gun 11; then the clamp 14 releases the positioning ring 15, and the spray gun 11 presses on the suspension arm 17 under the action of gravity; the lifting device 3 is raised to the waiting position, the suspension 18 retracts the suspension arm 17, and the auxiliary device lifts away the disassembled spray gun 11, completing the gun disassembly.

[0060] The method of using this spray gun replacement device is based on the cooperation between the various components of the device and the structure of the spray gun 11. It eliminates the need to connect the spray gun 11 to the reserved pipe 5 using flanges or other bolts, so that the spray gun 11 can be easily replaced without manual assistance, thus improving work efficiency.

[0061] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spray gun replacement device, characterized in that, include: The spray gun (11) and the positioning ring (15) are arranged circumferentially along the outer side of the spray gun (11); Suspension components; Including the suspension arm (17); Lifting components; Including lifting device (3); Hydraulic assembly; including a clamp (14) for clamping the positioning ring (15); When the clamp (14) contacts the side of the positioning ring (15), the clamp (14) slides downward, thereby generating an upward thrust on the spray gun (11). The positioning ring (15) has an inward inclined surface, and the clamp (14) has a groove corresponding to the inclined surface of the positioning ring (15); The inward inclined surface of the positioning ring (15) and the groove of the clamp (14) are matching arc-shaped or wedge-shaped surfaces; The suspension assembly further includes a hanger (18) having a retractable movable end, and the suspension arm (17) is fixedly connected to the movable end of the hanger (18). The lifting assembly also includes a lifting guide rail (4) disposed at the lower end of the lifting device (3), and a supporting outer tube (10) is slidably disposed on the lifting guide rail (4). The outer support tube (10) is provided with an inner support tube (8), and the inner support tube (8) is connected to the top of the spray gun (11); The top of the spray gun (11) is provided with a sealing ring (9), and the inner support tube (8) is detachably connected to the spray gun (11) through the sealing ring (9). The device is also provided with a reserved tube (5), the sealing ring (9) is provided with a through hole, and the inner tube of the spray gun (11) is detachably connected to the reserved tube (5) through the through hole; The hydraulic assembly also includes a hydraulic cylinder (13) and a hydraulic pipe (12). The hydraulic cylinder (13) is located outside the outer support pipe (10) and is connected to the outer support pipe (10) through the hydraulic pipe (12).

2. The method of using the spray gun replacement device as described in claim 1, characterized in that, Includes the following steps: S1. When loading the gun, the hanger (18) extends the hanger arm (17) to lift the spray gun (11) to the predetermined position; S2. Lower the lifting device to the gun changing position, and the hydraulic cylinder (13) pushes the clamp (14) to clamp the positioning ring (15) on the spray gun (11). S3. The clamp (14) slides down to lift the spray gun (11) to the top and connect it with the reserved tube (5). The suspension arm (17) retracts to complete the gun loading. S4. When disassembling the gun, lower the lifting device to the gun replacement position, and extend the suspension arm (17) of the hanger (18) to support the spray gun (11); then the clamp (14) releases the positioning ring (15). S5. The hanger (18) retracts the suspension arm (17) and lifts the spray gun (11) to the predetermined position to complete the disassembly of the gun.

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