CN2916535Y

CN2916535Y - Extractor roll of twin-net squeezer

Info

Publication number: CN2916535Y
Application number: CN 200620085279
Authority: CN
Inventors: 李风宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-08
Filing date: 2006-06-08
Publication date: 2007-06-27
Anticipated expiration: 2016-06-08

Abstract

The utility model discloses an extractor roll of a two-wire press master, which comprises a roll body; wherein the surface of the roll body is provided with a plurality of water-receiving concavities receiving the water discharged by the paper pulp; when the two wires clamp the paper pulp to enter the extractor roll with a wrap angle arranged on its upper part, the extruded sewage enters the water-receiving concavity through the tension of the two wires and the extractor roll action, and the extractor roll is separated with a filter screen through the rotation or the water flow channel of the roll surface; the extruded water won't flow back to the paper pulp on the two sides of the two wires, which thereby can improve the dewatering efficiency of the roll.

Description

The dehydration roll of twin-wire press

Technical field

The utility model is that a kind of dewatering of pulp that both can be applicable to the pulping and paper-making industry concentrates, and can also be widely used in sugaring, chemical fibre, brewages, the dehydration roll of the twin-wire press of industry dehydrations such as environmental protection, colliery.

Background technology

As shown in Figure 1, the dewatering Principle of two net dewatering of pulp equipment is: the dehydration mechanism that the low dense stage filters, the high dense stage pushes.Paper pulp densely is divided into two stages to the dense dehydration of height substantially from low: the open type tapered region that formed by the two nets live-roller 1, live-roller 2, the dehydration compression roller 3, paper pulp utilizes the gravity drainage in described open type tapered region, the paper pulp that is clipped in then between two nets enters horizontal roller water squeezing district, utilize the tension force of two nets to rely on

dehydration roll

31,32,33,34 dehydrations, the quantity of dehydration roll can be set as required, to realize that slurry is dehydrated to desired concn gradually.

The problem that above-mentioned technology exists is: prior art is that the roller surface of

dehydration roll

31,32,33,34 is smooth surface.The cornerite of two nets on dehydration roll is positioned at the

dehydration roll

32,34 on dehydration roll top, rely on the tension force and

dehydration roll

32,34 effects of two nets, the sewage that squeezes out refluxes along the paper pulp of extruding point to two nets both sides again, causes the reduction greatly of

dehydration roll

32,34 dewatering efficiencies.For addressing this problem, engineers and technicians have to increase the quantity of dehydration roll, therefore cause equipment volume huge, and the maintenance operation cost is higher.

Summary of the invention

Be positioned at dehydration roll top even technical problem to be solved in the utility model provides a kind of cornerite of two nets, have the dehydration roll of the twin-wire press of better dewatering efficiency too.

For achieving the above object, the technical solution of the utility model is: the dehydration roll of twin-wire press, comprise roll body, and the surface of described roll body is provided with some water receiving depressions of accepting the delignified pulp water outlet.

As a kind of improvement, described water receiving depression is water receiving pit independently separately.

As a kind of improvement, described water receiving depression is the annular groove around the roll body surface.

As a kind of improvement, described water receiving depression is the helical groove around the roll body surface.

As a kind of improvement, described water receiving depression is around roll body surface and two sections relative helical grooves of rotation direction.

Because adopt technique scheme, the dehydration roll of twin-wire press comprises roll body, the surface of described roll body is provided with some water receiving depressions of accepting the delignified pulp water outlet; When two network folders are held paper pulp and are entered into cornerite and be positioned at the dehydration roll on dehydration roll top, rely on the tension force and the dehydration roll effect of two nets, the sewage that squeezes out enters into the water receiving depression, dehydration roll separates with filter screen through rotation or the water stream channel by the roller surface, expressed water can not reflux along the paper pulp of extruding point to two nets both sides, thereby can improve the dewatering efficiency of roller.

Description of drawings

Fig. 1 is the schematic diagram of background technology;

Fig. 2 is the structural representation of the utility model embodiment one;

Fig. 3 is the structural representation of the utility model embodiment two;

Fig. 4 is the structural representation of the utility model embodiment three;

Fig. 5 is the structural representation of the utility model embodiment four.

The specific embodiment

The utility model generally is arranged in the superposed dehydration roll of cornerite of two nets in the twin-wire press dehydration roll group.The dehydration roll of the utility model twin-wire press comprises roll body 3, and the surface of described roll body 3 is provided with some water receiving depressions of accepting the delignified pulp water outlet.

Embodiment one: as shown in Figure 2, described water receiving depression is water receiving pit 41 independently separately; When two network folders are held paper pulp and are entered into cornerite and be positioned at the top of dehydration roll, rely on the tension force and the dehydration roll effect of two nets, the sewage that squeezes out enters into water receiving pit 41, and dehydration roll separates with filter screen through rotation, so expressed water can not reflux along the paper pulp of extruding point to two nets both sides.

Embodiment two: as shown in Figure 3, described water receiving depression is the annular groove 42 around roll body 3 surfaces.This version can will divide dried up horse back to discharge to the below of roller.

Embodiment three: as shown in Figure 4, described water receiving depression is the helical groove 43 around roll body 3 surfaces.This structure and embodiment have same effect.

Embodiment four: as shown in Figure 5, described water receiving depression is around roll body 3 surfaces and two sections relative helical grooves 44 of rotation direction.This version also has the effect that prevents the filter screen sideslip except that having the same dehydrating effect with embodiment.

Claims

1. the dehydration roll of twin-wire press comprises roll body (3), it is characterized in that: the surface of described roll body (3) is provided with some water receiving depressions of accepting the delignified pulp water outlet.

2. the dehydration roll of twin-wire press according to claim 1 is characterized in that: described water receiving depression is water receiving pit (41) independently separately.

3. the dehydration roll of twin-wire press as claimed in claim 1 is characterized in that: described water receiving depression is the annular groove (42) around roll body (3) surface.

4. the dehydration roll of twin-wire press as claimed in claim 1 is characterized in that: described water receiving depression is the helical groove (43) around roll body (3) surface.

5. the dehydration roll of twin-wire press as claimed in claim 1 is characterized in that: described water receiving depression is for around roll body (3) surface and the relative two sections helical grooves (44) of rotation direction.