CN2328509Y

CN2328509Y - High efficiency extruding and dehydrating machine

Info

Publication number: CN2328509Y
Application number: CN 98237944
Authority: CN
Inventors: 陈书公; 乔丹文
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-13
Filing date: 1998-06-13
Publication date: 1999-07-14
Anticipated expiration: 2008-06-13

Abstract

The utility model relates to a high efficiency extrusion dehydrating machine. The utility model is characterized in that an extrusion dehydrating cavity is formed by that two cylindrical surfaces which do not sharing the same center are used as an inner and an outer screen plates; the inner screen plate, scraping plates and a driving shaft form a synchronously rotating rotary drum; the scraping plates are distributed and arranged along the radial direction of the inner screen plate at equal intervals; the head ends of the scraping plates can penetrate through the surface of the inner screen plate and enter the extrusion dehydrating cavity; the tail ends of the scraping plates can be kept to be continuously contacted with the edge of a fixed cam through a rolling wheel. Compared with other dehydrating machines with the same efficiency, the utility model has the advantages of small size, small working area occupation and low power consumption and can be suitable for the producing process of the separation of solid and liquid phases in industries of pulp making and paper making industry, foods, chemical industry, medicine, etc.

Description

Efficient extruding liquid remover

The utility model relates to a kind of efficient extruding liquid remover, belongs to Solid-Liquid Separation equipment.

In the pulping and paper-making industry, in order to realize that Solid-Liquid Separation equipment such as acroll press washer, Var-nip press have been appearred in the mechanization of the production processes such as washing of extraction, thicken pulp and the paper pulp of black liquor in the paper pulp in the prior art.But these equipment exist in application: volume is too big, power consumption is higher, sieve plate easily stops up and cause equipment shortcoming such as operate as normal continuously.

The utility model purpose is: overcome the deficiency of prior art, a kind of new structure and operation principle are provided, not only can be used for all production processes in the pulping and paper-making industry but also can be used for the efficient extruding liquid remover of industry Solid-Liquid Separation such as food, chemical industry, medicine.

The utility model is achieved in that efficient extruding liquid remover, have charging aperture, take off the liquid outlet, discharging opening, hood shell, it is characterized in that: constitute extruding by the face of cylinder of two decentraction as inside and outside sieve plate and take off sap cavity, interior sieve plate, scraper plate, driving shaft constitute the rotary drum that rotates synchronously, scraper plate along interior sieve plate radial distribution equidistantly arrange, its head end can pass in the sieve plate face probe into the extruding take off sap cavity, the scraper plate end remains with a stationary cam edge by a roller and contacts.

When realizing the utility model, can design extruding that inside and outside sieve plate constitutes and take off sap cavity and be the ox horn wedge shape, taking off sap cavity near the discharging opening place is narrow section; Be provided with the discharging shovel board at the discharging opening place, its shovel cutting edge of a knife or a sword is against extruding and takes off on the interior sieve plate face of sap cavity; Be fixed with a sealing cleaning piece at the discharging opening place, its upper and lower end face offsets with outer, interior sieve plate face respectively, at the discharging opening place sap cavity is taken off in whole extruding and is divided into two parts.Also can make outer sieve plate form, lean on Bolt Connection between them by three; Design percent opening on the outer sieve plate and opening diameter less than perforate thing and opening diameter on the interior sieve plate.

The utility model advantage is:

1, compare with the liquid equipment that takes off of other equal usefulness, the utility model volume is less, the work floor space is less, and power consumption is lower, applicable to the production process of the Solid-Liquid Separation of industries such as pulping and paper-making industry, food, chemical industry, medicine.

2, be applied in the paper industry, the utility model mass dryness fraction to about 40% that can directly the former juice concentration of the pulp material after the boiling be contracted, extraction rate of black liquor once can reach more than 80%.

3, used string in the domestic paper industry, grass as raw material accounts for more than 80%, and it is the important channel that China's paper-making industry is attempted to improve straw pulp intensity, produced the high-quality paper that straw pulp is carried out the high concentration making beating.And want high concentration making beating, must guarantee to import high concentration plate mill take off liquid after paper pulp amount stablize, otherwise can influence the normal operation of disc mill.Various press master of the prior art is difficult to satisfy the requirement of this quantitated material-feeding from structure, so also just is difficult to produce high-quality straw pulp paper.And the utility model is under the constant prerequisite of rotating speed, and its structure can realize quantitative discharging, thereby solved the key issue that improves the papermaking quality.

When 4, carrying out pulp washing, because the utility model pulp concentration height (reaching about 40%), so can reach the washing requirement through 2～3 processes, and, can save the water consumption of washing greatly because the mass dryness fraction after each the concentrating is big.

5, China's paper-making industry generally all adopts low, middle concentration bleaching to paper pulp at present, and required container volume is big, and it is many to throw in the effective chlorine bleaching agent, and last paper pulp recovery rate is low, contains more harmful organochlorine in the waste liquid of discharge.Can make paper pulp before bleaching, reach high concentration and used the utility model, the high concentration bleaching can realize that required container is little, water is few, paper pulp recovery rate height, and the bleaching agent of need throwing in is few, therefore not only can save the bleaching expenses for medicine but also greatly limit reduction bleaching effluent to the pollution of environment.

6, but the reuse of common low consistency pulping waste paper is 2～3 times, but by using the utility model widespread production high concentration making beating paper, but the waste product reuse of this paper 7～8 times.

Fig. 1 is the utility model structural front view.

Fig. 2 is the utility model structure left view.

Below in conjunction with drawings and Examples the utility model is done further narration:

As shown in the figure, the utility model embodiment is by charging aperture 1, scraper plate 2, interior sieve plate 3, sealing cleaning piece 5, dehydration mass dryness fraction adjuster 6, discharging opening 7, discharging shovel board 8, scraper plate return guide rail 9, cam 10, scraper plate roller 11, dismantled and assembled

outer sieve plate

12 and 16, driving shaft 13, base 14, outer sieve plate attachment bolt 15, hood shell 17, takes off liquid outlet 18, scraper plate wiper mechanism 19, interior sieve plate wiper mechanism 20, fixing outer sieve plate 21, scraper plate bit shift compensation spring 22 compositions.

Outer sieve plate

12,16, the 21 common outer sieve plates of forming a cylinder curved surface, interior sieve plate 3 also is a cylinder curved surface, and two cylinder curved surface eccentric bushings are installed together, have formed an ox horn wedge shape cavity between two curved surfaces, and this cavity is extruding and takes off sap cavity; Have several scraper plates 2 equidistant along radially the arranging of interior sieve plate 3, space, the curved surface of sieve plate 3 in the head end of scraper plate 2 all can pass probes into extruding and takes off sap cavity; Driving shaft 13, interior sieve plate 3 and all scraper plates 2 common formation rotary drums keep rotating synchronously; Each scraper plate 2 end remains with stationary cam 10 by a roller 11 and contacts, and is provided with scraper plate return guide rail 9 bootable scraper plates in withdrawal is taken off the sap cavity in extruding in the sieve plate 3 near discharging opening 7; Each scraper plate 2 is furnished with automatic shift counterbalance spring 22, the wearing and tearing that produce to adapt to that variation that extruding takes off the sap cavity space contacts with outer sieve plate with the compensation scraper plate.

In the course of work of equipment, scraper plate 2 plays cleaning outer sieve plate surface and material is implemented the double action of traction extruding, for interior sieve plate 3 and the outer sieve plate that prevents rotary drum stopped up by solid material, also with water under high pressure cleaning mechanism 19,20, each equipment work is complete all can wash sieve plate and scraper plate on the equipment.

This machine has concurrently multiple solid-liquid phase system (as paper oar and aqueous systems) and filters and squeezing action, material is entered by equipment entrance 1, under the lower situation of solid-liquid relative concentration, in the space between preceding several scraper plates, the main dependence of dehydration produces certain pressure reduction filtration by the material that enters header box, and after reaching certain mass dryness fraction and forming stable filter course, the extruding force that then relies on scraper plate 2 to provide is implemented forced dehydration, being example concentration with paper pulp 10% when above, mainly is squeezing action.If it is higher to advance to starch concentration, then in equipment, rely on extrusion dehydration fully, slurry is implemented double dewatering by sieve plate on the rotary drum 3 and outer sieve plate in wedgy passage.Because sieve plate only contacts with nonmetal scraper plate with slurry at work, so the mechanical wear of sieve plate is less, when slurry forms stable filter course and carries out extrusion dehydration, pressing close to the slurry layer of drum surface and interior sieve plate can same moved further, realize static dehydration, and slurry layer and the sieve plate of pressing close to outer sieve plate surface have relative motion, enforcement be dynamic dehydration.Because dehydration mechanism between the two is difference to some extent, fiber loss when outer sieve plate dewaters is big than the rotary drum sieve plate, at this problem, percent opening on the outer sieve plate and opening diameter are slightly less than the rotary drum sieve plate, be near the extruding force the increase discharging opening 17, rubber cleaning sealing block 5 is equipped with at the discharging opening place, and this piece takes off sap cavity with whole extruding and is separated into two parts, to wait to take off material that liquid handles and handle complete material and keep apart, this cushion block also plays the effect of frictional cleaning rotary drum sieve plate simultaneously.Since this machine realized slurry interior sieve plate and outside double dewatering on the sieve plate, make the dewatering efficiency of equipment improve greatly.

When processed material after liquid is taken off in extruding, when forwarding near the discharging opening 7 with rotary drum, shovel board 8 will play, enter discharging opening 7 with interior sieve plate 3 synchronization-moving processed material shovels; Take off in discharging opening 7 and extruding and also to be provided with a baffle plate that takes off liquid mass dryness fraction guiding mechanism 7 between the sap cavity, take off the liquid mass dryness fraction, can tighten baffle plate, otherwise then transfer loose baffle plate if will improve;

Removable plates

12,16 in the outer sieve plate can be opened (as shown in Figure 1) by unloading bolt 15, so that keep in repair, maintain.

The utility model can be used for the Solid-Liquid Separation operation in multiple field, when specifically using, can design the sieve plate of different mesh order numbers and diameter dimension according to fiber length, the granular size of substance to be processed.

Claims

1, efficiently pushes liquid remover, have charging aperture, take off the liquid outlet, discharging opening, hood shell, it is characterized in that: constitute extruding by the face of cylinder of two decentraction as inside and outside sieve plate and take off sap cavity, interior sieve plate, scraper plate, driving shaft constitute the rotary drum that rotates synchronously, scraper plate along interior sieve plate radial distribution equidistantly arrange, its head end can pass in the sieve plate face probe into the extruding take off sap cavity, the scraper plate end remains with a stationary cam edge by a roller and contacts.

2, liquid remover according to claim 1 is characterized in that: the extruding that inside and outside sieve plate constitutes is taken off sap cavity and is the ox horn wedge shape, and taking off sap cavity near the discharging opening place is narrow section.

3, liquid remover according to claim 1 and 2 is characterized in that: be provided with the discharging shovel board at the discharging opening place, its shovel cutting edge of a knife or a sword is against extruding and takes off on the interior sieve plate face of sap cavity.

4, liquid remover according to claim 1 and 2 is characterized in that: outer sieve plate is formed by three, leans on Bolt Connection between them.

5, liquid remover according to claim 1 and 2 is characterized in that: percent opening on the outer sieve plate and opening diameter are less than interior sieve plate.

6, liquid remover according to claim 1 and 2 is characterized in that: be fixed with a sealing cleaning piece at the discharging opening place, its upper and lower end face offsets with outer, interior sieve plate face respectively, at the discharging opening place sap cavity is taken off in whole extruding and is divided into two parts.