CN2639345Y

CN2639345Y - Cylinder screen of pulp pressure screening machine

Info

Publication number: CN2639345Y
Application number: CN 03208025
Authority: CN
Inventors: 林景湖
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-15
Filing date: 2003-09-15
Publication date: 2004-09-08
Anticipated expiration: 2013-09-15

Abstract

The utility model relates to a cylinder screen of pulp pressure screening machine. A cylinder wall is provided on the screen; filtration holes are opened on the wave surfaces and wave trough lines in a plurality rows distributed axially inside or outside the cylinder wall. The filtration holes are of an radial slit shape; a plurality of flow interference strips are welded axially on the cylinder wall staggered with the filtration holes to increase the area of filtration holes of the screen, and increase pulse amplitude of pulp liquid inside the screen to enhance the negotiability.

Description

The cartridge type cribellum of pulp pressure screening machine

Technical field

The utility model is a kind of cartridge type cribellum of pulp pressure screening machine, relates to the technical field of papermaking equipment, refers to the cribellum of using in order to the sieving pulp liquor especially.

Background technology

The pulp pressure screening machine can be provided with a cartridge type cribellum, it is to place in the urceolus, rotating agitator is set, with in pulp liquor is poured cribellum in this cribellum, see through the centrifugal force (cribellum does not rotate) of the rotation generation of agitator, allow pulp liquor throw away outside the cribellum with the filter paper slurries.

Aforementioned cartridge type cribellum as shown in Figure 6, this cribellum 30 has a barrel 31 cylindraceous, barrel 31 medial surfaces axially form the continuous wave shape wave, whenever (trough is to arrange vertically to form the filter opening 32 of axial arrangement, slit shape in wave trough position, filter opening is equidistant arrangement), these filter opening 32 apertures are divided into two-part, towards lateral direction is to be the bigger outage 321 in aperture, inwards be to be the less liquid-entering hole 322 in aperture, go out outage 321 in order to pulp liquor by liquid-entering hole 322 screens, barrel 31 outsides are solid welding ring of numbers reinforcing ring 35 vertically.But this cribellum design has its problem to exist.

Because the arrangement of waveform face is along axially, it closes with the relative angle that the pulp liquor whirlpool turns to and is close to vertical kenel, be not easy to pass through filter opening along water (flow) direction, especially the ring of numbers reinforcing ring in the barrel outside, it can block the area of filter opening, so pulp liquor reduces by the area of filter opening, the paper pulp liquid measure that screen goes out in the unit interval obviously is difficult to reach mass-produced benefit;

And the crest crest line of waveform face is perpendicular to current whirlpool direction (being radially), can accelerated wear test so the trough of waveform face is subjected to that pulp liquor impacts repeatedly, wearing and tearing are bigger then little to the flow-disturbing effect of pulp liquor, make the pulp liquor ripple amplitude cause obstruction for a short time, the smoothness of pulp liquor circulation filter opening is not good.

The utility model content

The present utility model people is because the problem that the design of aforementioned existing cribellum exists the efficient of screen pulp liquor to still need and promote, therefore develop a kind of cartridge type cribellum of pulp pressure screening machine, mainly be can be under the filter opening pitch-row is identical, just can effectively increase the area that filter opening distributes, and improve the ripple amplitude of pulp liquor flow-disturbing, make the efficient of pulp liquor circulation filter opening better, for it mainly creates purpose.

In order to reach aforesaid goal of the invention, the technological means that the utility model used is the cartridge type cribellum that is to provide a kind of pulp pressure screening machine, this cribellum is to be provided with the hollow form barrel, wherein, in barrel vertically distribution number row be the radially filter opening of slit shape, this filter opening at one end forms the liquid-entering hole of small-bore, the other end is wide-aperture outage, the liquid-entering hole scope of corresponding filter opening forms continuous wavy surface on the barrel, and wavy surface is to form liquid-entering hole at the trough place; And

This barrel is provided with a trouble flow strip in the filter opening position weldering of staggering.

The effect that the utility model can obtain mainly is following listed:

1. under the same holes distance, filter opening of the present utility model is to be horizontal arrangement, the matching disturbance flow bar is arranged at barrel again, the effective area that allows filter opening be distributed in cribellum increases, even rise to percent opening more than 10%, and cooperating the horizontal arrangement of filter opening is to comply with the fluid direction of rotation, so promote the efficient of pulp liquor screen.

2. this face of the liquid-entering hole of filter opening is provided with several trouble flow strip, and its flow-disturbing of mat is used for strengthening the pulp liquor ripple amplitude, and the flow rate that makes pulp liquor pass through filter opening is accelerated, and can not produce the constant-resistance plug, and the circulation smoothness is good.

3. cooperating the horizontal arrangement of filter opening is to comply with the fluid direction of rotation, so the trough of wavy surface is subjected to fluid impact and causes wear condition effectively to be alleviated, the service life of growth cribellum.

Description of drawings

Fig. 1 is the utility model cribellum stereo appearance figure;

Fig. 2 is the three-dimensional partial enlarged drawing in the utility model cribellum filter opening position;

Fig. 3 is that the utility model filter opening amplifies upward pseudosection;

Fig. 4 is the utility model filter opening Zoom Side pseudosection;

Fig. 5 is that other filter opening of planting embodiment of the utility model amplify to be gone up pseudosection;

Fig. 6 is existing cribellum stereo appearance figure.

The specific embodiment

The utility model is a kind of cartridge type cribellum of pulp pressure screening machine, and please referring to shown in Figure 1, cribellum 10 is to be provided with hollow form barrel 11, and the filter opening 20 of barrel 11 is arrangement radially, and at barrel 11 inner faces or outside axial trouble flow strip 25 is set.

Below further specify detailed formation, as Fig. 2-4, barrel 11 madial walls are along the wavy surface 12 of axial distribution, wave trough position in wavy surface 12, run through vertically number row filter opening 20 is set, filter opening 20 is slit shape radially, and this filter opening 20 aperture inwards is less and be liquid-entering hole 21, is more greatly to be outage 22 towards the aperture in the outside; And

On the wavy surface 12 of barrel 11 inboards, the trouble flow strip 25 of several equi-spaced apart is established in weldering vertically, it is to be vertical with filter opening 22 length directions, trouble flow strip 25 better position are to stagger filter opening 20 and be welded in barrel 11 locating of wavy surface 12 is not set, trouble flow strip 25 welds are shown as weld zone 251 in the drawings, and barrel 11 as shown in Figure 1, still is welded with reinforcing ring (among the figure not label, because of it is a prior art) in the outside.

The characteristics that the utility model is implemented, mainly be wavy surface 12 crests, trough crest line, and filter opening 20 slit shapes along cribellum 10 radially, that is turning to along the current whirlpool, matching disturbance flow bar 25 is to dispose in vertical direction with filter opening 20 again, so its flow-disturbing effect can significantly promote the fluid pulsation amplitude of pulp liquor, therefore can allow pulp liquor discharge outage 22 by liquid-entering hole 21 rapidly, unlikely obstruction and keep good circulation, and provide appropriate reinforcement effect by 25 pairs of barrels 11 of trouble flow strip.

In addition, shown in Fig. 2,5, trouble flow strip 25 and wavy surface 12 thereof not only can be arranged at the madial wall of cribellum 10, also can select to be arranged at lateral wall, change with the performance requirement according to cribellum 10, enforcement situation shown in Figure 5 is that liquid-entering hole 21 and trouble flow strip 25 are arranged at the outside, outage 22 is arranged at the outside, and the sieve stream that pulp liquor is discharged outage 22 by the liquid-entering hole 21 of filter opening 20 uses kenel.

Claims

1. the cartridge type cribellum of a pulp pressure screening machine, it is characterized in that, this cribellum is to be provided with the hollow form barrel, its in barrel vertically distribution number row be the radially filter opening of slit shape, this filter opening at one end forms the liquid-entering hole of small-bore, the other end is wide-aperture outage, and the liquid-entering hole scope of corresponding filter opening forms continuous wavy surface on the barrel, and wavy surface is to form liquid-entering hole at the trough place; And this barrel is whenever put and the phase butt welding is provided with a trouble flow strip in the filter opening that staggers.

2. the cartridge type cribellum of pulp pressure screening machine as claimed in claim 1 is characterized in that described trouble flow strip is arranged at the position of barrel, be relatively with filter opening radially be vertical.

3. the cartridge type cribellum of pulp pressure screening machine as claimed in claim 2 is characterized in that, described trouble flow strip and wavy surface are the medial surfaces that is arranged at barrel.

4. as the cartridge type cribellum of claim 2 a described pulp pressure screening machine, it is characterized in that described trouble flow strip and wavy surface are the lateral surfaces that is arranged at barrel.