CN207608762U - A kind of pressurized screen - Google Patents

Abstract

The utility model discloses a kind of pressurized screens, including the first sieve pore portion and the second sieve pore portion, it is connected with expansion mouth on the periphery in the first sieve pore portion one end port, being located at outside weldings on the periphery in the first sieve pore portion other end port has flow divider looping, flow divider looping welds the second sieve pore portion on the periphery far from the first sieve pore portion other end port, strengthening portion is welded on the bore edge of other end port of the second sieve pore portion far from flow divider looping.This pressurized screen, first screen casing is into slurry due to having in the first screen casing under sieve pore weight slag filtering, light impurity is raised to the air in slurry on flow divider looping to be open from flow divider and be discharged naturally, and heavy seeds one can be deposited to discharge into the second sieve pore portion, improve screening efficiency；Extend the service life of equipment, flow divider shunting function reduces burden, and strengthening portion reinforces the firmness of the second sieve pore portion bore, avoids causing to loosen connecting for a long time with equipment, sealing performance reduction.

Description

A kind of pressurized screen

Technical field

The utility model is related to pulp technology for making paper, specially a kind of pressurized screen.

Background technology

Upward flow type pressure sieve is that a kind of relatively broad screening installation, the work of upward flow type pressure sieve are used in pulping production line It is that slurry is oriented in a tangential direction into the lower part separation chamber of pressurized screen as principle, slurry stream is from equipment lower motion to equipment when work Top, slurry enter screen cylinder and revolve the screening area between cylinder, and acceptable fiber is drawn by sieve pore by good slurry pipe, underproof slurry, It continues up, is discharged by scum pipe at the top of pressurized screen, but the heavy seeds for including in slurry in this process also can By screening areas, more serious abrasion is caused to screen cylinder and rotor, while also influencing screening efficiency.

Invention content

The purpose of this utility model is to provide a kind of pressurized screens, have and improve screening efficiency；Extend the use of equipment The advantages of service life avoids connect for a long time with equipment and causing to loosen, sealing performance reduction, solves in the prior art ask Topic.

To achieve the above object, the utility model provides the following technical solutions：A kind of pressurized screen, including the first sieve pore portion and Second sieve pore portion is connected with expansion mouth, the first sieve pore portion other end on the periphery of first sieve pore portion one end port Being located at outside weldings on the periphery of port has a flow divider looping, filled with the with sieve pore in the inner cavity in the first sieve pore portion One screen casing, the expansion mouth is located on bigbore periphery is welded with round steel by two sides, and the flow divider looping is symmetrical Both ends offer flow divider opening, flow divider looping welds second on the periphery far from the first sieve pore portion other end port Sieve pore portion, flow divider opening are communicated with the inner cavity of flow divider looping, are uniformly opened up on the outer circle axial plane in second sieve pore portion There is pressure arc groove portion, the second screen casing of sieve pore is filled in the inner cavity in the second sieve pore portion, the second sieve pore portion is far from shunting valve pocket It is welded with strengthening portion on the bore edge of the other end port of oral area.

Preferably, the quantity in the pressure arc groove portion is 11, and the length in pressure arc groove portion is 40mm, described in two It is 105mm to press the spacing between arc groove portion center, and the depth in pressure arc groove portion is 12mm.

Preferably, flow divider is installed in the inner cavity of the flow divider looping, the both ends bore of flow divider respectively with point Stream valve opening connects.

Preferably, the angle of the expansion mouth and the first sieve pore cross section is 18 °, the first sieve pore portion and the second screen casing Interior electrical path length 805mm, the first sieve pore portion, expansion mouth and the second screen casing are made of stainless steel, the first sieve pore portion, expansion mouth Thickness with the second screen casing is 3.5mm.

Compared with prior art, the beneficial effects of the utility model are as follows：

This pressurized screen, the first screen casing is under starching due to there is sieve pore weight slag to filter in the first screen casing, in light impurity and slurry Air is raised on flow divider looping to be open from flow divider and be discharged naturally, and heavy seeds one enter the second sieve pore portion can the row of being deposited to Go out, in this way, being on the one hand effectively shortened impurity in the residence time in sieve area, reduces the possibility of impurity recycling, improve Screening efficiency；On the other hand it prevents heavy seeds from being damaged caused by rotor and screen cylinder, extends the service life of equipment, flow divider can It is flowed out with selecting to be open the slurry flowed into from the first sieve pore portion after filtering from the flow divider of which side, shunting function is reduced Burden, strengthening portion reinforce the firmness of the second sieve pore portion bore, avoid causing to loosen connecting for a long time with equipment, leakproofness It can reduce.

Description of the drawings

Fig. 1 is the overall structure figure of the utility model.

Fig. 2 is the A-A enlarged drawings of the utility model.

Fig. 3 is the B-B enlarged drawings of the utility model.

Fig. 4 is the C-C enlarged drawings of the utility model.

In figure：1 first sieve pore portion, 11 expansion mouths, 111 round steel, 12 first screen casings, 2 second sieve pore portions, 21 pressure arc grooves Portion, 22 second screen casings, 23 strengthening portions, 3 flow divider loopings, 31 flow dividers opening.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

Please refer to Fig.1-4, a kind of pressurized screen, including the first sieve pore portion 1 and the second sieve pore portion 2,1 one end end of the first sieve pore portion It is connected with expansion mouth 11 on the periphery of mouth, is had positioned at outside weldings on the periphery of 1 other end port of the first sieve pore portion Flow divider looping 3, filled with the first screen casing 12 with sieve pore in the inner cavity in the first sieve pore portion 1, the first screen casing 12 into slurry by In having in the first screen casing 12 under sieve pore weight slag filtering, the air in light impurity and slurry be raised to naturally on flow divider looping 3 from 31 discharge of flow divider opening, heavy seeds one can be deposited to discharge into the second sieve pore portion 2, in this way, on the one hand effectively shortening Impurity reduces the possibility of impurity recycling, improves screening efficiency in the residence time in sieve area；On the other hand prevent weight miscellaneous Damage, extends the service life of equipment, expansion mouth 11, which is located on bigbore periphery, to be passed through caused by confrontation rotor and screen cylinder Two sides is welded with round steel 111, and the angle of 1 cross section of expansion mouth 11 and the first sieve pore portion is 18 °, the first sieve pore portion 1 and second sieve The interior electrical path length 805mm of pipe 22, the first sieve pore portion 1, expansion mouth 11 and the second screen casing 22 are made of stainless steel, the first sieve The thickness of hole portion 1, expansion mouth 11 and the second screen casing 22 is 3.5mm, and round steel 111 and expansion mouth 11 expand bore, facilitate first Sieve pore portion 1 connects with other equipment, and 3 symmetrical both ends of flow divider looping offer flow divider opening 31, flow divider looping 3 The second sieve pore portion 2, flow divider opening 31 and flow divider looping are welded on periphery far from 1 other end port of the first sieve pore portion 3 inner cavity communicates, and flow divider is equipped in the inner cavity of flow divider looping 3, and the both ends bore of flow divider is opened with flow divider respectively Mouth 31 connects, and flow divider can select the slurry come in from the first sieve pore portion 1 and the second sieve pore portion 2 after filtering from which The flow divider opening 31 of side flows out, and pressure arc groove portion 21 is uniformly provided on the outer circle axial plane in the second sieve pore portion 2, pressure camber is recessed The quantity of groove portion 21 is 11, and the length in pressure arc groove portion 21 is 40mm, between two are pressed between 21 center of arc groove portion It is 12mm away from the depth for 105mm, pressure arc groove portion 21, the second screen casing of sieve pore is filled in the inner cavity in the second sieve pore portion 2 22, strengthening portion 23, strengthening portion are welded on the bore edge of other end port of the second sieve pore portion 2 far from flow divider looping 3 23 reinforce the firmness of 2 bores of the second sieve pore portion, avoid connect for a long time with equipment and causing to loosen, sealing performance reduction.

In summary：This pressurized screen, the first screen casing 12 are light miscellaneous under starching due to there is sieve pore weight slag to filter in the first screen casing 12 Matter is raised on flow divider looping 3 with the air in slurry from 31 discharge of flow divider opening naturally, and heavy seeds one enter the second sieve Hole portion 2 can be deposited to discharge, in this way, being on the one hand effectively shortened impurity in the residence time in sieve area, reduce impurity and follow The possibility of ring, improves screening efficiency；On the other hand it prevents heavy seeds from being damaged caused by rotor and screen cylinder, extends equipment The slurry flowed into from the first sieve pore portion 1 can be selected to open from the flow divider of which side after filtering by service life, flow divider Mouthfuls 31 flow out, and shunting function reduces burden, the firmness of reinforcement 2 bore of the second sieve pore portion of strengthening portion 23, avoid with equipment Connection causes to loosen for a long time, and sealing performance reduces.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of pressurized screen, including the first sieve pore portion（1）With the second sieve pore portion（2）, it is characterised in that：First sieve pore portion （1）It is connected with expansion mouth on the periphery of one end port（11）, the first sieve pore portion（1）The periphery of other end port is upper There is flow divider looping in outside weldings（3）, the first sieve pore portion（1）Inner cavity in filled with sieve pore the first screen casing （12）, the expansion mouth（11）Round steel is welded with by two sides on bigbore periphery（111）, the flow divider running-on Portion（3）Symmetrical both ends offer flow divider opening（31）, flow divider looping（3）Far from the first sieve pore portion（1）Other end end The second sieve pore portion is welded on the periphery of mouth（2）, flow divider opening（31）With flow divider looping（3）Inner cavity communicate, it is described Second sieve pore portion（2）Outer circle axial plane on be uniformly provided with pressure arc groove portion（21）, the second sieve pore portion（2）Inner cavity in fill There is the second screen casing of sieve pore（22）, the second sieve pore portion（2）Far from flow divider looping（3）Other end port bore edge on It is welded with strengthening portion（23）.

2. a kind of pressurized screen according to claim 1, it is characterised in that：The pressure arc groove portion（21）Quantity be 11 It is a, pressure arc groove portion（21）Length be 40mm, two pressure arc groove portions（21）Spacing between center is 105mm, pressure arc groove portion（21）Depth be 12mm.

3. a kind of pressurized screen according to claim 1, it is characterised in that：The flow divider looping（3）Inner cavity in pacify Equipped with flow divider, the both ends bore of flow divider is open with flow divider respectively（31）Connect.

4. a kind of pressurized screen according to claim 1, it is characterised in that：The expansion mouth（11）With the first sieve pore portion（1） The angle of cross section is 18 °, the first sieve pore portion（1）With the second screen casing（22）Interior electrical path length 805mm, the first sieve pore portion（1）, expand Oral area（11）With the second screen casing（22）It is made of stainless steel, the first sieve pore portion（1）, expansion mouth（11）With the second screen casing （22）Thickness be 3.5mm.