CN2297469Y - Composite external vacuum inside spin pulp extruder - Google Patents

Abstract

The utility model relates to a compound type external vacuum and inside spin pulp extruder which is mainly composed of a machine seat, a butt-buckling type machine casing with an inlet, a discharge port, and a liquid outlet, a bar-shaped screen of a butt-buckling type belt-annular ring in the butt-buckling type machine casing, an extruding screw sheet with varying diameter and pitch, and a reverse thrust pressure regulating plug which is arranged at the discharge port and is connected with an oil cylinder. The tail part of the extruding screw sheet is the intermittent type screw; the utility model can be used for extruding the papermaking pulp material and the extruding force can be regulated; the utility model has the advantage of high liquid discharging rate; the utility model is convenient for processing pollution and installing whole machine; the utility model has convenient mantainance; the mesh can not easily be blocked.

Description

The outer vacuum inside spin press master of combined type

The utility model relates to a kind of press master, and the outer vacuum inside spin press master of particularly a kind of combined type belongs to the shove equipment that extracts high concentration black liquor in the straw pulp paper making process.

At present, papermaking straw pulp occupies main status in China's paper-making industry, but papermaking straw pulp is again a harm greatly that causes environmental pollution.Improve and transform shove equipment, the equipment level that improves the pulp washing technology in the papermaking straw pulp is one of key of administering the black liquid pollution.Existing washing device is a lot, but effect and bad in papermaking straw pulp, acroll press washer, the single-stage extraction rate of pair roller type press master is too low, be no more than 50%, though recovery rates such as vacuum drum washer, belt pulp washing machine are higher, the black liquor amount after extracting is big, and concentration is low, is unfavorable for the comprehensive regulation of black liquor.And existing acroll press washer is unreasonable because of screen designs, easily causes screen cloth torsional deformation and black liquor obstruction mesh in the use, needs often replacing and to backwash, influences normally use.

The purpose of this utility model for addressing the above problem, provides a kind of black liquor amount that need not to increase and design exactly, is convenient to improve black concentration, and the outer vacuum inside spin of straw pulp combined type that can improve extraction rate of black liquor again squeezes machine.

The utility model be achieved in that it by support, bring into mouthful, the casing of discharge nozzle and interior vacuum chamber, screen cloth thereof, form through the support and the liquid outlet at motor-driven helical axis and two ends, casing is that upper and lower two halves are to buckle structure; Screen cloth is formed by the upper and lower net make-up of two semicircle arcuations that the Intranet bar of outer net circle and welding forms; The axis body of helical axis is the reducing body of thin head and thick end, and spiral from the head to the tail is that variable-pitch propeller is that helix pitch diminishes gradually, and head, middle spiral sheet are the entity continuous helical, and the afterbody flight becomes the discontinuous spiral; The discharging oral area is provided with the anti-adjusting chock plug that pushes away that is connected with hydraulic cylinder, to regulate the net internal pressure.For ease of installing and strengthening intensity, it can be to separate processing that the forward and backward two ends of helical axis connect rotating shaft, and link into an integrated entity with spline and flat key structure and spiral axis body respectively.

The utility model has the advantages that and strengthened screen strength, reduced the screen cloth obstruction, increased the extruding and the stirring action of spiral, improved pulping rate, the anti-adjusting plug head that pushes away is regulated the net internal pressure better, keep stable operation, be not subjected to the influence of grout absorption and guarantee recovery rate, the upper and lower of casing and screen cloth installs equipment to buckle structure, keeps in repair more convenient, the screw pressure that screen cloth is subjected to can reduce the screen cloth rock deformation pressure in the flange connections payment of limit portion.

Accompanying drawing 1, the utility model master looks (office is cutd open) schematic diagram;

Accompanying drawing 2, the utility model A-A cross-sectional schematic;

Accompanying drawing 3, the utility model B-B cross-sectional schematic;

Accompanying drawing 4, the screen cloth master looks schematic diagram in the utility model;

Accompanying drawing 5, (office is cutd open) schematic diagram is looked on a screen cloth left side in the utility model.

Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing.

The utility model by support 1, drive motors 2, connect drive flange 3, screw extrusion axle front end spring bearing 4, rear end horizontal sliding spring bearing 20 and bring into, the casing 7 of the discharging mouth of pipe 5,11 and drain pipe 10, and the screen cloth 8 that is loaded in the casing 7 is formed with the screw extrusion axle 9 with forward and backward connecting axle 6,12, wherein, casing 7 fixedly is made up of through bolt 7-2 through the flange 7-1 of limit portion upper and lower two halves make-up, have screen cloth 8 to support annular septal branch support 13 in the casing 7, and have in the bottom be communicated with drain pipe go out Yehmen (ying-Spring point SJ 2) 14 and fixing bayonet socket 15; Screen cloth 8 is stuck in the bayonet socket 15 on the annular space bracing frame 13 fixing by the upper and lower two halves make-up footpath limit 8-1 of portion adpting flange place, screen cloth 8 is by outer annular retainer plate 8-2 spaced apart and be connected in that cross section net bar 8-3 triangular in shape rearranges in the retainer plate 8-2, forms the horn-like bar shaped screen cloth eye 8-4 that enlarges from inside to outside between the adjacent net bar 8-3; The reducing body of screw extrusion axle 9 axis bodies for increasing to afterbody (Fig. 1 shows direction from left to right) diameter linearity from the head, helical pitch on it from the head to the middle part to afterbody from large to small, and head, middle spiral are continuous entity spiral sheet 9-1, afterbody spiral discontinuous flight 9-2; Footpath connecting rod 17 that is placed on the screw extrusion axle 9 rear end connecting axles 12 of the discharging mouth of pipe 11 replies is connected to the anti-pushing force adjusting plug 16 on the oil cylinder 18; The discharging mouth of pipe 11 bottoms have a blanking to release spiral 19.For ease of processing, the installation of screw extrusion axle 9 and forward and backward connecting axle 6,12 thereof, forward and backward connecting axle 6,12 can separate with screw extrusion axle 9, and respectively through spending strong and flat key structure and screw extrusion axle 9 to fuse.

When using the utility model, be connected to Negative pressure machine on the fluid mouth of pipe 10, paper making pulp is entered by inlet tube 5, through 9 extruding of screw extrusion axle, stirring, add that Negative pressure machine makes the negative pressure of vacuum that forms between screen cloth 8 and the casing 7, the liquid in the slurry is fully extruded, and through going out Yehmen (ying-Spring point SJ 2) 14 and 10 outflows of the fluid mouth of pipe, sticking shape slurry of solids drops out at the discharging mouth of pipe 11 places, and sends through releasing spiral 19.According to entering the pressure size of slurry in screen cloth 8, adjusting oil cylinder 18 drives anti-pushing force adjusting plug 16 effects, can keep normal extrusion pressures in the screen cloth 8, extrudes slurries to greatest extent with assurance, and unlikely damage screen cloth 8.When the bell mouth shape bar shaped screen cloth eye 8-4 of screen cloth 8 can make slurries extrude, reduce dope and stop up mesh.

Claims (3)

1, the outer vacuum inside spin press master of a kind of combined type, by support (1), drive motors (2), connect and drive flange (3), screw extrusion axle front end spring bearing (4), rear end horizontal sliding spring bearing (20) and bringing into, the discharging mouth of pipe (5), (11) and the casing (7) of drain pipe (10), and before being loaded on interior screen cloth (8) of casing (7) and band, back connecting axle (6), (12) screw extrusion axle (9) is formed, it is characterized in that: casing (7) is by last, following two halves make-up is fixed through bolt (7-2) through limit portion flange (7-1) and is formed, have screen cloth (8) to support annular septal branch support (13) in the casing (7), and have in the bottom be communicated with drain pipe go out Yehmen (ying-Spring point SJ 2) (14) and fixing bayonet socket (15); Screen cloth (8) is by last, following two halves make-up portion adpting flange place, limit, footpath (8-1) is stuck in the bayonet socket (15) on the annular space bracing frame (13) fixing, screen cloth (8) is by outer annular retainer plate spaced apart (8-2) and be connected in the interior cross section of retainer plate (8-2) net bar (8-3) triangular in shape and rearrange, forming horn-like bar shaped screen cloth eye (8-4) screw extrusion axle (9) axis body that enlarges from inside to outside between the adjacent net bar (8-3) is from the head to the linear reducing body that increases of tail diameter, helical pitch on it from the head to the middle part to afterbody from large to small, and head, middle spiral is a continuous entity spiral sheet (9-1), afterbody spiral discontinuous flight (9-2); Footpath connecting rod (17) that is placed on screw extrusion axle (9) the rear end connecting axle (12) of the discharging mouth of pipe (11) reply is connected to the anti-pushing force adjusting plug (16) on the oil cylinder (18).

2, the outer vacuum inside spin press master of combined type as claimed in claim 1 is characterized in that the discharging mouth of pipe (11) bottom is equipped with a blanking and releases spiral (19).

3, the outer vacuum inside spin press master of combined type as claimed in claim 1 or 2 is characterized in that forward and backward connecting axle (6), (12) fuse through spline and flat key structure and screw extrusion axle (9) respectively.

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