CN-116989582-B - Spray gun dismounting device and application method thereof

CN116989582BCN 116989582 BCN116989582 BCN 116989582BCN-116989582-B

Abstract

The invention discloses a spray gun dismounting device and a using method thereof, wherein the spray gun dismounting device comprises a spray gun and a positioning ring, the positioning ring is circumferentially arranged along the outer side of the spray gun, a suspension assembly comprises a suspension arm, a lifting assembly comprises a lifting device, a hydraulic assembly comprises a clamp holder, the clamp holder is used for clamping the positioning ring, when the clamp holder contacts with the side surface of the positioning ring, the clamp holder slides downwards, so that upward thrust is generated on the spray gun, the spray gun is tightly propped up to realize fixing of the spray gun, the spray gun dismounting device is used for dismounting the spray gun, the using method of the spray gun dismounting device is disclosed, the flange or bolt connection of the spray gun and the spray pipe in the prior art is omitted, the spray gun can be conveniently dismounted without manual assistance, and the working efficiency is improved.

Inventors

WAN XUEFENG
WANG HEJUN
DENG BIRONG
LIU HONGJUN
LIU YUNHUA
XIE JIANFU
Tan Dajin
Hou Taofang
SHI GUOHUA
DUAN JIANXU

Assignees

湖南华菱涟源钢铁有限公司

Dates

Publication Date: 20260508
Application Date: 20230625

Claims (2)

1. A spray gun changing device, comprising: The spray gun comprises a spray gun (11) and a positioning ring (15), wherein the positioning ring (15) is circumferentially arranged along the outer side of the spray gun (11); a suspension assembly comprising a suspension arm (17); The lifting assembly comprises a lifting device (3); -a hydraulic assembly comprising a gripper (14), said gripper (14) being adapted to grip said positioning ring (15); When the clamp holder (14) is contacted with the side surface of the positioning ring (15), the clamp holder (14) slides downwards, so that upward thrust is generated on the spray gun (11); the positioning ring (15) is provided with an inward inclined plane, and the clamp holder (14) is provided with a groove corresponding to the inclined plane of the positioning ring (15); The inward inclined surface of the positioning ring (15) and the groove of the clamp holder (14) are arc-shaped surfaces or wedge-shaped surfaces which are matched; The suspension assembly further comprises a hanger (18), the hanger (18) is provided with a retractable movable end, and the suspension arm (17) is fixedly connected with the movable end of the hanger (18); the lifting assembly further comprises a lifting guide rail (4) arranged at the lower end of the lifting device (3), and a supporting outer tube (10) is arranged on the lifting guide rail (4) in a sliding manner; a supporting inner pipe (8) is arranged in the supporting outer pipe (10), and the supporting inner pipe (8) is connected with the top of the spray gun (11); the top of the spray gun (11) is provided with a sealing ring (9), and the supporting inner tube (8) is detachably connected with the spray gun (11) through the sealing ring (9); the device is also provided with a reserved pipe (5), the sealing ring (9) is provided with a through hole, and the inner pipe of the spray gun (11) is detachably connected with the reserved pipe (5) in a butt joint way through the through hole; the hydraulic assembly further comprises a hydraulic cylinder (13) and a hydraulic pipe (12), wherein the hydraulic cylinder (13) is arranged outside the outer supporting pipe (10) and is communicated with the outer supporting pipe (10) through the hydraulic pipe (12).
2. The method of using the gun changer of claim 1, comprising the steps of: s1, when loading the gun, a hanger (18) extends out of a hanging arm (17) to hoist the spray gun (11) to a preset position; S2, the lifting device is lowered to a gun replacing position, and the hydraulic cylinder (13) pushes the clamp holder (14) to clamp the positioning ring (15) on the spray gun (11); s3, the clamp holder (14) slides downwards, the spray gun (11) is jacked up, the reserved pipe (5) is abutted, and the suspension arm (17) is retracted, so that the gun loading is completed; s4, when the gun is detached, the lifting device is lowered to a gun replacing position, the hanger (18) extends out of the hanging arm (17), the hanging arm (17) supports the spray gun (11), and then the clamp holder (14) releases the positioning ring (15); s5, the hanger (18) retracts to the hanging arm (17), the spray gun (11) is lifted to a preset position, and the gun dismantling is completed.

Description

Spray gun dismounting device and application method thereof Technical Field The invention belongs to the technical field of spray gun replacement, and particularly relates to a spray gun replacement device and a use method thereof. Background The spray gun is widely applied to steel smelting technology, the spray gun carries out operations such as desulfurization, dephosphorization and the like on molten iron by blowing powder, but the spray gun has limited service life, needs to be replaced in time after being used for a period of time, and in the replacement process, the spray gun is mostly connected and fixed with the spray pipe in a flange or other bolt mode, and the disassembly and replacement process needs manual assistance, so that the replacement time is long each time, and the labor intensity is high. The utility model of China with publication number of CN212457880U discloses a quick gun changing device in the field of smelting reduction iron making, which changes the traditional gun changing mode, well solves the problems of complicated gun changing, long time, low operation efficiency and the like in the operation, but the gun and the spray pipe of the device are still in flange connection, the auxiliary disassembly is needed manually in the changing process, and the labor intensity is high. Therefore, the present invention provides a gun replacing device to solve the above-mentioned problems in the prior art. Disclosure of Invention The present invention is directed to a gun changer that overcomes at least one of the problems and deficiencies set forth in the background art. The invention also provides a using method of the device. Specifically, the first aspect of the present invention discloses a device for replacing a spray gun, comprising: the spray gun comprises a spray gun and a positioning ring, wherein the positioning ring is circumferentially arranged along the outer side of the spray gun; the suspension assembly comprises a suspension arm; the lifting assembly comprises a lifting device; the hydraulic assembly comprises a clamp holder, a positioning ring and a positioning rod, wherein the clamp holder is used for clamping the positioning ring; When the holder contacts with the side surface of the positioning ring, the holder slides downwards, thereby generating upward thrust. According to one of the technical schemes of the spray gun dismounting device, the spray gun dismounting device has at least the following technical effects: Taking a gun loading working state as an example, the device uses a suspension assembly to hoist the spray gun to a preset position, and then uses a lifting assembly to drive the spray gun to lift or descend; the device can also be used for disassembling an old gun, so that the flange or bolt connection of the spray gun and a spray pipe in a gun replacing device in the prior art is omitted, the spray gun can be conveniently disassembled and replaced without manual assistance in the disassembly and replacement process, and the working efficiency is improved. As a still further proposal of the invention, the positioning ring is provided with an inward inclined plane, and the clamp holder is provided with a groove corresponding to the inclined plane of the positioning ring. Because the locating ring is provided with an inward inclined plane, the clamp holder is provided with a groove corresponding to the inclined plane of the locating ring, when the inclined plane of the locating ring is contacted with the inclined plane of the clamp holder groove, the sliding is generated, so that upward component force is generated, then the component force acts on the spray gun through the locating ring, and when the upward component force is larger than the gravity, the top end of the spray gun is butted. As a still further aspect of the invention, the hanger assembly further comprises a hanger having a retractable movable end, the hanger arm being fixedly connected to the movable end of the hanger. Because the hanger is provided with the retractable movable end, the hanging arm is fixedly connected with the movable end of the hanger, and the hanger can drive the hanging arm to hoist the spray gun. As a still further proposal of the invention, the lifting assembly also comprises a lifting guide rail arranged at the lower end of the lifting device, and the lifting guide rail is provided with a supporting outer tube in a sliding way. The lifting assembly is further provided with a lifting guide rail, and the lifting guide rail is provided with a supporting outer tube in a sliding mode, so that the supporting outer tube can be driven to lift or descend and used for abutting and fixing the spray gun. As a still further proposal of the invention, a supporting inner pipe is arranged in the supporting outer pipe, and the supporting inner pipe is connected with the spray gun. Because the support inner tube is arranged in the support outer tube, the support inner tube is connected w