Method for reinforcing barrel body of flotation machine

Abstract

The method comprises the following steps that the height of a flotation machine barrel body is divided into an upper layer and a lower layer, an annular jacket is manufactured according to the size of the upper layer of the flotation machine barrel body through lofting and surveying and mapping, the annular jacket is provided with an inner ring (1) and an outer ring (2), the inner ring of the annular jacket sleeves the upper layer of the flotation machine barrel body, and the outer ring of the annular jacket sleeves the lower layer of the flotation machine barrel body; the lower layer of the barrel body of the flotation machine is divided into a plurality of pieces in the circumferential direction, a plurality of curved surface plates attached to the barrel body of the flotation machine are manufactured through lofting and surveying and mapping, the tops of the curved surface plates are provided with extending parts extending into the outer ring of the annular clamping sleeve, and the extending parts are connected with the outer ring of the annular clamping sleeve through bolts. The device has the beneficial effects that when the barrel body of the flotation machine is seriously corroded and needs to be replaced, disassembly and replacement can be avoided, overall reinforcement can be carried out in the production process, and production halt replacement of the barrel body of the flotation machine and disassembly of accessories are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of flotation equipment, and in particular relates to a method for reinforcing a barrel of a flotation machine. Background Art

[0002] The flotation machine is one of the main equipment in a large mineral processing plant. The barrel of the flotation machine is a cylindrical barrel structure with a diameter of 6632mm and a height of 4800mm. It is made of 6mmQ235 steel plate and 8mm rubber lining. After a long time of operation, the steel plate in the barrel is seriously corroded. The corrosion phenomenon and trend are large-area radial mesh, which cannot be repaired. If the overall reinforcement is not taken in time, it will cause great hidden dangers and economic losses to the safety and production of the flotation equipment platform. The existing technology generally replaces the steel plate in the barrel after it is seriously corroded. However, in actual production, due to the limitations of the internal structure of the factory and the operating space of the overhead crane, as well as the tight production tasks, it is inconvenient to replace the barrel. Summary of the invention

[0003] The technical problem to be solved by the present invention is that there is no repairing scheme for the existing flotation machine barrel when it is rotten, and for this purpose, a flotation machine barrel reinforcement method which does not require the barrel to be replaced as a whole is provided.

[0004] The technical solution of the present invention is: a method for reinforcing a flotation machine barrel, comprising the following steps: dividing the height of the flotation machine barrel into an upper and lower layer, staking out and mapping an annular jacket according to the size of the upper layer of the flotation machine barrel, the annular jacket having an inner ring and an outer ring, the inner ring of the annular jacket sleeves the upper layer of the flotation machine barrel, dividing the lower layer of the flotation machine barrel into a plurality of pieces in a circumferential direction, staking out and mapping a plurality of curved plate materials that fit the flotation machine barrel, the top of the curved plate having an extension portion extending into the outer ring of the annular jacket, the extension portion being connected to the outer ring of the annular jacket by bolts.

[0005] An improvement of the above solution is that a plurality of bolt holes are provided on the extension portion and the outer ring.

[0006] In the above solution, a rubber lining is adapted inside the outer ring.

[0007] In the above solution, a rubber lining is adapted inside the inner ring.

[0008] The beneficial effect of the present invention is that when the barrel of the flotation machine is seriously corroded and needs to be replaced, it can be removed and replaced without removal, and can be reinforced as a whole during the production process, avoiding stopping production to replace the barrel of the flotation machine and removing accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the flotation machine barrel of the present invention; Figure 2 It is a schematic diagram of the annular jacket structure of the present invention; In the figure, 1. base channel steel, 2. base flange, 3. upper reinforcement plate, 4. lower reinforcement plate, 5. overflow port of upper reinforcement plate, 6. sand outlet of lower reinforcement plate, 7. middle chamber of lower reinforcement plate, 8. inner ring, 9. outer ring. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0011] like Figure 1 As shown, the flotation machine barrel generally includes a base channel steel 1, a base flange 2, an upper reinforcement plate 3, a lower reinforcement plate 4, an upper reinforcement plate overflow port 5, a lower reinforcement plate sand outlet 6, and a lower reinforcement plate intermediate chamber 7.

[0012] like Figure 1-2 As shown, the method for reinforcing the barrel of a flotation machine comprises the following steps: dividing the height of the barrel of the flotation machine into two layers, upper and lower layers; making an annular jacket according to the size of the upper layer of the barrel of the flotation machine by lofting and mapping; the annular jacket comprises an inner ring 8 and an outer ring 9; the inner ring of the annular jacket sleeves the upper layer of the barrel of the flotation machine; dividing the lower layer of the barrel of the flotation machine into a plurality of pieces in the circumferential direction; making a plurality of curved plate materials that fit the barrel of the flotation machine by lofting and mapping; the top of the curved plate material comprises an extension portion extending into the outer ring of the annular jacket; the extension portion is connected to the outer ring of the annular jacket by bolts.

[0013] The inner ring of the annular jacket matches the thickness of the flotation machine barrel. The lower layer of the flotation machine barrel is divided into 8 pieces in the circumferential direction, and 8 curved plates are made respectively. Multiple bolt holes are opened in the height direction on the extension of the curved plate, and multiple bolt holes are opened in the height direction on the corresponding outer ring. The fit between the curved plate and the outer ring can be adjusted by matching multiple bolts with the bolt holes. A rubber lining is fitted inside the outer ring, and a rubber lining is fitted inside the inner ring.

[0014] When in use, a plurality of flotation machine barrels can be connected in series by connecting the intermediate chamber parts, and the connecting intermediate chamber parts and the external ear skin parts of some flotation barrels can be manufactured and installed on-site during the reinforcement process.

[0015] The present invention can quickly and comprehensively cover the barrel of the flotation machine through the cooperation between the annular jacket and a plurality of curved surface plates, without the need to replace the barrel and stop production, thereby improving production efficiency.

Claims

1. The method for reinforcing the barrel of a flotation machine is characterized by: The following steps are involved: The height of the flotation machine barrel is divided into an upper and lower layer. According to the size of the upper layer of the flotation machine barrel, an annular jacket is produced by lofting and mapping. The annular jacket comprises an inner ring (8) and an outer ring (9). The inner ring of the annular jacket sleeves the upper layer of the flotation machine barrel. The lower layer of the flotation machine barrel is divided into a plurality of pieces in a circumferential direction. A plurality of curved plate pieces that fit the flotation machine barrel are produced by lofting and mapping. The top of the curved plate piece has an extension portion that extends into the outer ring of the annular jacket. The extension portion is connected to the outer ring of the annular jacket by bolts.

2. The method for reinforcing the flotation machine barrel according to claim 1, characterized in that: The extension part and the outer ring are provided with a plurality of bolt holes.

3. The method for reinforcing the flotation machine barrel according to claim 1, characterized in that: A rubber lining is adapted inside the outer ring.

4. The method for reinforcing the flotation machine barrel according to claim 1, characterized in that: A rubber lining is adapted inside the inner ring.

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