CN205188695U - Twin -screw shredder scroll cover - Google Patents
Twin -screw shredder scroll cover Download PDFInfo
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- CN205188695U CN205188695U CN201520824122.2U CN201520824122U CN205188695U CN 205188695 U CN205188695 U CN 205188695U CN 201520824122 U CN201520824122 U CN 201520824122U CN 205188695 U CN205188695 U CN 205188695U
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Abstract
The utility model discloses a twin -screw shredder scroll cover, including the screw feeder assembly, the screw feeder assembly is by the twin -screw, the bearing frame, transmission coupling and bistrique are constituteed, the both ends of twin -screw all set up on the bearing frame, the shaft coupling with transmission be connected is provided with in twin -screw one end, another pot head of twin -screw between two bearing frames is equipped with the bistrique, be provided with the feed inlet on being close to the twin -screw of shaft coupling one end, be provided with the discharge gate between bistrique and bearing frame, the scroll cover that the twin -screw was established at the spindle by dabber and cover constitutes, the both ends of twin -screw be through the dabber setting on the bearing frame, the scroll cover is that the spindle between the diaxon bearing is established to the cover, the scroll cover is positive spiral, two screw rod intermeshing form and seal or semi -enclosed die cavity, scroll cover pitch diminishes from the feed inlet toward discharge gate direction pitch gradually.
Description
Technical field
The utility model relates to a kind of twin-screw shredder screw casing, is a kind of screw casing of linear change pitch.
Background technology
The principle of chemical-mechanical pulping first carries out certain chemical treatment to raw material, then adopts the method for defibrination to make plant fiber material be dispersed into fiber under the effect of mechanical force.Twin-screw shredder is the nucleus equipment of modern chemistry machinery pulping factory, and it not only directly affects the quality of slurrying product, is also the key equipment of energy-saving and emission-reduction.Twin-screw shredder is high slurry yield, high-performance, the energy-saving cleaning machine pulping equipment of generally acknowledging at present.The twin-screw shredder that current pulp mill uses be generally two be parallel to each other, engage each other and in the same way synchronous rotary screw rod and be mated casing composition mechanism, spiral positive and negative alternate on special screw rod, namely transport screw B and reverse acting spiral A is arranged alternately and forms several crush zones, and reverse acting spiral A has several skewed slot.In shove process, pulping material is sent into by charging aperture, reverse acting spiral is pushed by first crush zone C transport screw, under forward and reverse screw extrusion effect, material is rubbed broken by compression, because transport screw squeezing action is comparatively large, material is forced to pass through from the skewed slot of reverse acting spiral and be sheared and tear, and enters next crush zone D, so repeatedly, paper pulp is ground at discharging opening material.While extruding, add chemical reagent, make material, in the process of mechanism, chemical reaction occur.
Utility model content
The purpose of this utility model is to provide a kind of twin-screw shredder screw casing of linear change helical pitch.By two parallel, to engage each other and the building blocks of synchronous rotary form in the same way, right-handed screw cover is the pitch structure of linear gradient, fibre stuff is subject to dynamic extruding in conveying simultaneously, strengthen the conveying capacity of positive displacement, formed and close or semi-enclosed die cavity, fiber through rubbing, completes frotation and fibrous refinement under high density and high pressure condition.
Technical solutions of the utility model are as follows:
A kind of twin-screw shredder screw casing, comprise screw feeder assembly, screw feeder assembly is by twin-screw, bearing block, transmission coupling and bistrique composition, the two ends of twin-screw are all arranged on bearing block, the shaft coupling be connected with transmission device is provided with in twin-screw one end, the other end of the twin-screw between two bearing blocks is arranged with bistrique, twin-screw near shaft coupling one end is provided with charging aperture, discharging opening is provided with between bistrique and bearing block, twin-screw is made up of mandrel and the screw casing be set on mandrel, the two ends of twin-screw are arranged on bearing block by mandrel, screw casing is set on the mandrel between diaxon bearing, screw casing is right-handed screw, two screw rods engage each other to be formed to be closed or semi-enclosed die cavity, screw casing pitch diminishes from charging aperture gradually toward discharging opening direction pitch.
Above-mentioned twin-screw shredder screw casing, pitch is from charging aperture toward the direction of discharging opening successively linear decrease, and the cavity of sealing or semitight reduces gradually.
Above-mentioned twin-screw shredder screw casing, the screw casing of different pitch is arranged on two mandrels by spline, forms two parallel screw rods.
Adopt technique scheme, the utility model has following advantage: due to screw casing and the suitable compression ratio of linear change helical pitch, the slurry produced has following features: 1. stock quality is good, slurry concentration high (25% ~ 40%), fibre cutting effect is little, and axial compression intensity is large.These conditions are conducive to fibrous refinement, thus improve paper strength; 2. pulping energy consumption is low, and input energy is mainly consumed in the extruding of slurry and interfibrous friction.Useful energy consumption for slurrying accounts for larger ratio, and compared with disc mill, energy consumption reduces by 20% ~ 50%; 3. function many, simplify production technology, decrease production area; 4. water consumption few, be conducive to environmental protection, due to this device dehydration, washing carry out all under a high concentration condition, its mixing efficiency is high again, and therefore slurry amount is low, decreases blowdown, is conducive to environmental protection; 5. device structure is simple, easy to operate, maintenance cost is lower.Slurrying original paper screw casing is building blocks combined type, can carry out local directed complete set and replacing according to the difference of pulping material, and equipment operating is easy, and operating cost is lower than disc mill.
Accompanying drawing illustrates:
Fig. 1 is traditional double screw feeder general assembly schematic diagram.
Fig. 2 is the utility model twin screws general assembly schematic diagram.
Detailed description of the invention
A kind of twin-screw shredder screw casing as shown in Figure 2, is made up of systems such as transmissions, up and down cavity, screw feeder assembly, base, lubrication and hydraulic pressure.Screw feeder assembly is by twin-screw 1, bearing block 2, shaft coupling 3 and bistrique 4 form, the two ends of twin-screw are all arranged on bearing block, the shaft coupling be connected with transmission device is provided with in twin-screw one end, the other end of the twin-screw between two bearing blocks is arranged with bistrique 4, twin-screw near shaft coupling one end is provided with charging aperture E, mandrel between discharging opening E and bearing block is also arranged with backgauge screw casing 6, prevent the material of coming in from charging from draining on bearing block, discharging opening F is provided with between bistrique and bearing block, twin-screw is made up of mandrel 7 and the screw casing be set on mandrel, the two ends of twin-screw are arranged on bearing block by mandrel, the screw casing 5 of different pitch is arranged on two mandrels by spline, form two parallel screw rods.Screw casing is right-handed screw, thus forms suitable compression ratio.Two screw rods engage each other to be formed to be closed or semi-enclosed die cavity, forms positive conveyance.Screw casing pitch diminishes from charging aperture E gradually toward discharging opening F direction pitch.Make the gap smaller between two screw rods blade.Gap is less, and the pressure between spiral is larger, and shear rate is larger, and the separating force of two screw rods is large, and dispersion mixing is good.The pitch of screw casing is from charging aperture toward the direction of discharging opening successively linear decrease, and the cavity of sealing or semitight reduces gradually.Gap reduces gradually, and the pressure of outlet increases gradually.The pitch of screw casing import is large, and after spiral engages each other, semitight cavity is large, and gap is large, and pressure is little.The screw casing pitch at spiral outlet place is little, and after spiral engages each other, seal chamber is little, and gap is little, and pressure is large.
The utility model is to provide a kind of twin-screw shredder screw casing of linear change helical pitch, and its section of tearing is made up of twin screws assembly, upper-lower casing, bearing block etc.Two are parallel to each other, engage each other and synchronous rotary, screw rod that internal-and external diameter is identical are arranged on bearing block respectively by mandrel in the same way.The screw casing of different pitch is arranged on two mandrels by spline, forms two parallel screw rods.What screw rod front portion was installed is backgauge screw casing, be then one be divided into a few joint and pitch with the right-handed screw cover of linear change.Two screw rods engage each other to be formed to be closed or semi-enclosed die cavity, forms positive conveyance condition.Because the pitch of screw casing diminishes from charging aperture gradually toward discharging opening direction, make the gap smaller between two screw rods.Gap is less, and the pressure between spiral is larger, and shear rate is higher, and the separating force of two screw rods is large, and dispersion mixing is good.Material through rolling, extruding, mixing, can grind out fiber longer, the high concentration paper pulp that brooming is effective in spiral.The rear portion of screw rod is provided with columniform bistrique, and this bistrique is connected with screw rod by spline and mandrel, rotates with screw rod.
Claims (3)
1. a twin-screw shredder screw casing, comprise screw feeder assembly, screw feeder assembly is by twin-screw, bearing block, transmission coupling and bistrique composition, the two ends of twin-screw are all arranged on bearing block, the shaft coupling be connected with transmission device is provided with in twin-screw one end, the other end of the twin-screw between two bearing blocks is arranged with bistrique, twin-screw near shaft coupling one end is provided with charging aperture, discharging opening is provided with between bistrique and bearing block, its feature is: twin-screw is made up of mandrel and the screw casing be set on mandrel, the two ends of twin-screw are arranged on bearing block by mandrel, screw casing is set on the mandrel between diaxon bearing, screw casing is right-handed screw, two screw rods engage each other to be formed to be closed or semi-enclosed die cavity, screw casing pitch diminishes from charging aperture gradually toward discharging opening direction pitch.
2. twin-screw shredder screw casing according to claim 1, is characterized in that: the pitch of screw casing is from charging aperture toward the direction of discharging opening successively linear decrease, and the cavity of sealing or semitight reduces gradually.
3. twin-screw shredder screw casing according to claim 1 and 2, is characterized in that: the screw casing of different pitch is arranged on two mandrels by spline, forms two parallel screw rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824122.2U CN205188695U (en) | 2015-10-23 | 2015-10-23 | Twin -screw shredder scroll cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824122.2U CN205188695U (en) | 2015-10-23 | 2015-10-23 | Twin -screw shredder scroll cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205188695U true CN205188695U (en) | 2016-04-27 |
Family
ID=55781699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520824122.2U Active CN205188695U (en) | 2015-10-23 | 2015-10-23 | Twin -screw shredder scroll cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205188695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137591A (en) * | 2018-09-20 | 2019-01-04 | 上海同化新材料科技有限公司 | It is used to prepare the device of powdered cellulose |
-
2015
- 2015-10-23 CN CN201520824122.2U patent/CN205188695U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137591A (en) * | 2018-09-20 | 2019-01-04 | 上海同化新材料科技有限公司 | It is used to prepare the device of powdered cellulose |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |