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A high-rigidity rod screen drum and its manufacturing method

A manufacturing method and high-rigidity technology, applied in textiles, papermaking, fiber raw material processing, etc., can solve the problems of easy deformation and cracking of rod-shaped sieve drums, and achieve increased opening ratio, improved sieve drum life, improved rigidity and fatigue resistance performance effect

Active Publication Date: 2016-04-27
JIANGXI HONGDU PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem that the rod-shaped screen drum is easy to deform and crack by strengthening the structural strength of the rod-shaped screen drum

Method used

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  • A high-rigidity rod screen drum and its manufacturing method
  • A high-rigidity rod screen drum and its manufacturing method
  • A high-rigidity rod screen drum and its manufacturing method

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Embodiment

[0054] Example: The materials used in the high-rigidity rod screen drum of the present invention are all stainless steel 304 or 316L, and the slurry contacting working surface 62 and the clamping groove 61 of the special-shaped plate 6 are processed by CNC milling (see Image 6 , Figure 7 ), scratches and other defects are not allowed on the surface, the dimensional tolerance is controlled within ±0.02mm and the straightness is guaranteed. Process the installation notch, and ensure that the center line of the notch is perpendicular to the tangent line of the inner circle of the fixed ring. According to each group of eighteen rods 2, special-shaped plates 6 are installed in parallel between each group, and the depth of the notch is 5 ~5.5mm (see Figure 5 ). The processed special-shaped plate 6 and the bar 2 are evenly combined and embedded in the fixed ring 3, and put into a special hydraulic bulging mold, and the special-shaped plate 6 and the bar 2 are respectively expand...

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Abstract

The invention discloses a high-rigidity rod sieve drum. A fixed ring is arranged between the upper and lower flanges. Rods are installed on the upper and lower flanges and the inner ring of the fixed ring. At least two rods form a group. Special-shaped plates are installed in parallel between them, and the special-shaped plates are fixedly connected with the upper and lower flanges and the inner ring of the fixed ring, and a sealing ring is installed on the outer periphery of the lower flange. The process steps are as follows: roll forming; notch cutting; fixing ring positioning; installing special-shaped plates; welding; installing rods; welding flanges; finishing; drilling and deburring; polishing; aging treatment; The cross-sectional area of ​​the special-shaped plate of the present invention is several times that of conventional rods, which can effectively reduce the pulsating pressure generated by the slurry on the rod screen drum during the use of the pressure screen, and greatly improve the rigidity and fatigue resistance of the rod screen drum Performance, the life of the rod screen drum can be greatly improved, the production capacity of the pressure screen has been improved, and the ring spacing and parallelism of the fixed ring can be effectively guaranteed, which greatly improves the assembly accuracy of the screen drum rings.

Description

technical field [0001] The invention relates to a rod sieve drum technology of a papermaking machinery part, which is used for the manufacture of a rod sieve drum which is a core component of a pressure screen of a slurry purification equipment in the papermaking industry, and particularly relates to a high rigidity rod sieve drum and a manufacturing method thereof. Background technique [0002] The pressure screen is one of the key equipment in the papermaking process. Its good ring directly affects the quality of the pulp, and the rod screen drum is the core component of the pressure screen. The rod-shaped sieve drum commonly used in the industry at present is composed of rods 2 arranged like a grid, which are welded (or riveted) with the upper and lower flanges 1, 4 and a series of fixing rings 3 (supporting rings). structure to hold it in place (see figure 1 , 2 ). Compared with the traditional milling slotted screen, this structure has the advantages of high opening ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21D5/06
CPCD21D5/06
Inventor 廖承东叶宁张卫夫
Owner JIANGXI HONGDU PRECISION MACHINERY
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