Middle high density hydraulic pulper

A hydraulic pulper and pulper technology, applied in the field of papermaking machinery, can solve the problems of increased power consumption, easy cutting of fibers, and increased production costs, and achieve the effects of reducing power consumption, improving quality, and avoiding friction

Inactive Publication Date: 2005-08-24
李风宁
0 Cites 19 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] The bottom of the tank of the existing hydropulper is flat, and the bottom of the rotor of the hydropulper is equipped with a bottom knife. There is a strong mechanical friction between the rotor and the bottom of the tank, and this strong mechanical friction will easily cut t...
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Method used

As shown in Figure 1, medium-high concentration hydraulic pulper comprises pulper tank body 1, and the bottom of tank body 1 is vertically installed with the pulper rotor 2 that is provided with helical blade, the drive of pulper rotor 2 The end is fixedly connected with the driving device located below the tank body 1, and the bottom of the tank body 1 corresponding to the driving end of the pulper rotor 2 is an upward boss-like protrusion 9, and the boss-like protrusion is a truncated cone Of course, it can also be a cylindrical or streamlined protrusion. This structural shape facilitates the smooth and unimpeded vortex circulation of the slurry in the tank, and avoids the friction between the rotor and the tank; due to the setting of the boss, The bottom of the tank forms an annular groove, which is beneficial to the collection of non-fibrous impurities; the inner side wall of the pulper tank 1 is provided with a number of loose fiber protrusions 8, this structure can increase waste paper in the The number of collisions and the collision force in the tank further improve the efficie...
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Abstract

The invention discloses a hydraulic pulp kneader, including the trough solid whose bottom has pulp kneader with corkscrew leaf set vertically, the driving end of pulp kneader is connected to the driving device below the trough solid, and the bottom of trough solid of the pulp kneader driving end is saddlebacked, making the leaf of pulp kneader get away from the bottom of trough solid, avoiding friction between the trough solid and pulp kneader completely, decides the route of whole vorticity circulation and local vorticity circulation formed in the trough solid is lengthed, so that the times of collision is increased and the waste paper is scattered to be the single fiber and it won't be cut off, also, all kinds of nonfiber mixture are kept wholly, it has decreased the energy cost and increased the quality of paper pulp.

Application Domain

Paper recyclingRaw material division

Technology Topic

Energy costHigh density +3

Image

  • Middle high density hydraulic pulper
  • Middle high density hydraulic pulper

Examples

  • Experimental program(1)

Example Embodiment

[0012] Such as figure 1 As shown, the medium and high-concentration hydraulic pulper includes a pulper tank 1. The bottom of the tank 1 is vertically installed with a pulper rotor 2 provided with spiral blades. The driving end of the pulper rotor 2 is connected to the tank body 1. The lower driving device is fixedly connected. The bottom of the trough 1 corresponding to the driving end of the pulper rotor 2 is an upward convex boss 9 which is a frustum, of course it can also be a cylinder. Shaped or streamlined protrusions, this structural shape is convenient to make the vortex circulation of the slurry in the tank smooth and unimpeded, avoiding the friction between the rotor and the tank; due to the setting of the boss, the bottom of the tank is formed An annular groove is conducive to the collection of non-fibrous impurities; the inner wall of the pulper tank 1 is provided with a number of defibrating fiber protrusions 8. This structure can increase the number of collisions and collisions of waste paper in the tank. The collision force further improves the efficiency of waste paper fiber disintegration.
[0013] The driving device includes an electric motor 31, a gearbox 32 driven by the electric motor, and a gearbox power output shaft 33 fixedly connected to the drive end of the pulper rotor 2; as a free publicly known technology well known to ordinary engineers and technicians, the power device There are many and varied, of course, other methods can also be used, such as a belt-driven power device, which will not be repeated here.
[0014] Such as figure 2 As shown, the pulper rotor 2 includes a rotor central shaft 4, and spiral blades 51, 52, 53 fixed on the central shaft 4. The rotor central shaft 4 is a stepped shaft, which is free from the central shaft 4 The shaft diameters of the stepped shafts from end 6 to driving end 7 increase in turn, and the shaft sections of stepped shafts with different shaft diameters transition smoothly through conical or streamlined surfaces. The stepped shafts are on the shaft sections with different shaft diameters. Spiral blades 51, 52, 53 are respectively provided, and the pitches of the spiral blades 51, 52, 53 respectively provided on the shaft sections with different shaft diameters are different.
[0015] Since there are multiple sets of spiral blades on the central axis of the rotor and the pitches between them are different, the thrust exerted by each spiral blade on the slurry flow is different, so the overall vortex circulation and the partial vortex circulation are formed in the pulper tank. The vortex cycle, the number of collisions of waste paper in this vortex increases, and the angle of collision is constantly changing, so the waste paper is broken and dissociated into single fibers; its advantages are: 1. The central axis is designed as a stepped axis, which satisfies the mechanics of materials. It is easy to process, save material, and facilitate the welding of spiral blades; 2. The pitch between the spiral blades provided on the shaft sections with different shaft diameters is different, so that the thrust exerted by each spiral blade on the slurry flow is The difference is that the overall vortex cycle and the partial vortex cycle are formed in the pulper tank, which improves the dissociation efficiency of the pulper; 3. Smooth transition between stepped shafts with different shaft diameters through conical or streamlined surfaces, Conducive to the circulation of slurry.

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Description & Claims & Application Information

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