CN-121990316-A - Screw blade replacement anti-deformation system and method

CN121990316ACN 121990316 ACN121990316 ACN 121990316ACN-121990316-A

Abstract

The application relates to the technical field of transportation mechanical equipment, and provides a screw blade replacement anti-deformation system and a screw blade replacement anti-deformation method. The system comprises a horizontal supporting and positioning device, a circulating cooling device and a blade fixing device, wherein the horizontal supporting and positioning device is used for supporting and horizontally fixing a spiral mandrel from below in the process of removing old blades and welding new blades, the circulating cooling device is communicated with the inside of the spiral mandrel to form a cooling loop for circulating cooling of the spiral mandrel, and the blade fixing device is detachably clamped at the joint of each spiral blade and a blade root and used for pressing and fixing the joint after welding the new blades. The method ensures that the repaired spiral conveyor mandrel is not bent, the blade spiral line is smooth and complete, the operation stability and the material conveying efficiency of the spiral conveyor after repair are obviously improved, and the continuous and stable material conveying among vanadium oxide production processes is ensured.

Inventors

XIAO KAIJIAN
GONG HAO
LIU GUOFENG
ZHANG TINGGANG
YOU BENYIN
DENG XIAOFEI
PU DELI
FU WEN
LI CHENGLONG

Assignees

攀钢集团钒钛资源股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260327

Claims (10)

1.A helical blade replacement deformation prevention system, comprising: a horizontal support positioning device (801) for supporting and horizontally fixing the spiral mandrel (6) from below during the process of removing the old blade and welding the new blade; A circulation cooling device (802) which is communicated with the inside of the spiral mandrel (6) and forms a cooling loop for circularly cooling the spiral mandrel (6); And the blade fixing device (803) is detachably clamped at the joint of each spiral blade (7) and the blade root and is used for pressing and fixing the joint after welding a new blade.
2. A screw blade replacement anti-deformation system according to claim 1, characterized in that the horizontal support positioning means (801) are uniformly distributed and supported at the front, middle and rear of the screw mandrel (6).
3. A screw blade replacement anti-deformation system according to claim 1, characterized in that the horizontal support positioning device (801) comprises at least three sets of lifting trolley sets (13), each set of lifting trolley sets (13) being provided with a self-locking lifting rocker (11) for adjusting the lifting height, a braking universal wheel (12) for positioning and a mandrel support roller (15) for supporting.
4. A screw blade replacement anti-deformation system according to claim 3, characterized in that the horizontal support positioning device (801) further comprises a correction mandrel (9) and a magnetic level meter (10), wherein the correction mandrel (9) is used for being placed on mandrel support rollers (15) of each group of lifting trolley groups (13) in advance before the screw mandrel (6) to be repaired is placed, and the magnetic level meter (10) is used for aligning the horizontal state of the correction mandrel (9) and enabling each group of lifting trolley groups (13) to be adjusted to the same horizontal height by taking the horizontal state of the correction mandrel (9) as a reference.
5. The helical blade replacement deformation-preventing system according to claim 1, wherein the circulating cooling device (802) comprises a circulating water tank (1), a circulating water pump (2), a water inlet pipeline (3), a water return pipeline (4), a water inlet connector (5) and a water return connector (14), the water inlet connector (5) and the water return connector (14) are respectively detachably connected with two ends of a helical mandrel (6), and the circulating water pump (2) is used for driving circulating water to circulate between the circulating water tank (1) and the helical mandrel (6).
6. A screw blade replacement anti-deformation system according to claim 1, characterized in that the circulating water pump (2) is adapted to drive circulating water to circulate inside the screw spindle (6) in a bottom-in-and-out manner.
7. A screw blade replacement anti-deformation system according to claim 1, characterized in that the blade fixing device (803) comprises a plurality of blade clamping plates (8) for independently compressing and fixing each joint, each blade clamping plate (8) is provided with a clamping plate jacking block (17), a jacking block knob (16) and a fixing nut (18), and the clamping plate jacking block (17) is matched with the fixing nut (18) through the jacking block knob (16) so as to adjust the compression degree.
8. A screw blade replacement anti-deformation system according to claim 7, characterized in that the blade clamping plates (8) are symmetrically distributed in the circumferential direction of the screw mandrel (6) for symmetrically positioning and fixing the screw blades (7) during welding.
9. The screw blade replacement deformation prevention system according to claim 7, wherein the diameter of the welding rod matched with the blade clamping plate (8) is 2.5-3.2 mm, and the welding current is not more than 100 amperes.
10. A spiral vane replacement anti-deformation method, characterized in that the spiral vane replacement anti-deformation system according to any one of claims 1 to 9 is used, comprising: Supporting and horizontally fixing the spiral mandrel (6) from below through a horizontal supporting and positioning device (801) in the process of removing the old blade and welding the new blade; A cooling loop for circularly cooling the spiral mandrel (6) is formed by communicating the circulation cooling device (802) with the inside of the spiral mandrel (6); The blade fixing device (803) is detachably clamped at the joint of each spiral blade (7) and the blade root, and the joint of each spiral blade (7) is pressed and fixed after a new blade is welded.

Description

Screw blade replacement anti-deformation system and method Technical Field The invention relates to the technical field of transportation mechanical equipment, in particular to a screw blade replacement anti-deformation system and a screw blade replacement anti-deformation method. Background The effective connection of the vanadium trioxide roasting, leaching, raw material and other multi-process production materials is realized, the bucket lifting and the transmission of a belt and a screw device are not needed, and the screw conveyor takes the dominant position in the transmission device. Because of the technological characteristics of vanadium trioxide preparation, in-situ screw conveyor is easy to wear by vanadium oxide clinker particles in the uninterrupted use process, so that the screw conveyor is in normal state after the replacement of the blades. At present, the traditional spiral mandrel blade replacing mode is that the spiral mandrel is directly placed on the ground after being extracted from the shell, and the welding part of the root of the old spiral abrasion blade is cut and removed in a high-temperature mode by utilizing a gas cutting gun or a plasma cutting gun. This way of removing the wear blades causes an aspect of the helical mandrel to bend. Secondly, in the process of replacing a new spiral blade, the spiral mandrel lacks a horizontal fixed support, and the mandrel is heated unevenly when the new blade is continuously welded, so that the mandrel is bent on the other hand. Again, during the welding of new helical blades, the lack of clamping fixtures at the juncture of the individual helical blades creates another aspect of the helical blade weld distortion. In addition, the welding mode adopted by the traditional replacement of the helical blade is rough, and the deformation degree of the mandrel and the blade is further increased. The traditional screw conveyor blade is not good in replacement mode, the bending of the mandrel and the deformation of the blade are caused, the bent mandrel frequently wipes and hangs the screw cylinder body, screw operation obstruction is increased, the welded deformed blade can also cause damage to the screw line, wipe and hang the shell, the material conveying effect is greatly discounted, and when screw operation resistance is overlarge, even the severe phenomenon of screw blocking or mandrel fracture is caused. To sum up, in the process of removing old blades and installing new blades, the bending degree of the mandrel and the deformation of the blades after the blades are replaced by the spiral mandrel are difficult to effectively control, so that the spiral cylinder body is frequently rubbed and hung by the spiral conveyor after repair, the failure rate is high, the labor intensity of the later manual intervention on spiral failure is increased, the normal conveying capacity of the spiral conveying is reduced due to the repair failure, and the efficient production of vanadium oxide is hindered. Disclosure of Invention In view of the above, the present disclosure provides a system and a method for replacing a spiral blade, which aims at the technical problems of high failure rate and low conveying efficiency of a repaired spiral conveyor due to bending of a mandrel and welding deformation of the blade when the spiral blade is replaced in the prior art. According to a first aspect of the present invention there is provided a helical blade replacement anti-deformation system comprising: the horizontal supporting and positioning device is used for supporting and horizontally fixing the spiral mandrel from below in the process of removing the old blade and welding the new blade; The circulating cooling device is communicated with the inside of the spiral mandrel to form a cooling loop for circulating cooling of the spiral mandrel; The blade fixing device is detachably clamped at the joint of each spiral blade and the blade root and is used for pressing and fixing the joint after welding a new blade; the horizontal support positioning device, the circulating cooling device and the blade fixing device jointly act on the process of removing old blades and welding new blades, so that the bending degree of the mandrel of the spiral mandrel is in a normal range, and welding deformation of the joint of each spiral blade is prevented. In some embodiments, the horizontal support positioning means uniformly distribute support at the front, middle and rear of the helical mandrel. In some embodiments, the horizontal support positioning device comprises at least three groups of lifting trolley groups, wherein each group of lifting trolley groups is provided with a self-locking lifting rocker for adjusting lifting height, a braking universal wheel for positioning and a mandrel support carrier roller for supporting. In some embodiments, the horizontal support positioning device further comprises a correction mandrel and a magnetic level, wherein the correction mandre