Middle high density hydraulic pulper

[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.