CN203998182U - The even doffer of chemical-mechanical pulping reaction warehouse - Google Patents
The even doffer of chemical-mechanical pulping reaction warehouse Download PDFInfo
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- CN203998182U CN203998182U CN201420404566.6U CN201420404566U CN203998182U CN 203998182 U CN203998182 U CN 203998182U CN 201420404566 U CN201420404566 U CN 201420404566U CN 203998182 U CN203998182 U CN 203998182U
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- screw shaft
- load displacing
- blanking ring
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Abstract
The utility model discloses the even doffer of chemical-mechanical pulping reaction warehouse, comprise housing, load displacing screw, discharging opening, described load displacing screw comprises screw shaft and is arranged on the helicallobe on screw shaft, the position that described screw shaft is positioned at discharging opening top is fixed with even blanking ring, and described even blanking ring is consistent with the central axis of described screw shaft; Described even blanking ring is provided with multiple-screw thread blade, and the rotation direction of described multiple-screw thread blade is consistent with the helicallobe rotation direction on described load displacing screw.The utility model can be realized even blanking by even blanking ring, is conducive to downstream pulping equipment steady production, and fluctuation of load amplitude is reduced within 10 ~ 15% above by original one times, has reduced equipment failure rate, has improved reliability, has stablized stock quality; Simultaneously can be further on contrarotation by contiguous load displacing screw and load displacing screw the variable pitch of helicallobe design, realize balanced conveying, raise the efficiency, reduce spiral running load and wearing and tearing.
Description
Technical field
The utility model relates to a kind of doffer, is specifically related to a kind of doffer for chemical-mechanical pulping reaction warehouse.
Background technology
Chemical pretreatment is the critical process stage of chemical mechanical pulp-making method, its objective is that the profit that realizes vegetable fibre rises and the modification of lignin.Chemical pretreatment is to make can isolate more complete fiber in follow-up defibrination process by fiber softening, increases long fiber fraction, improves the physical strength of slurry, reduces refining energy consumption simultaneously.
Before chemical treatment, vegetable fibre pulping raw material all needs, through extruding conquassation, after vegetable fibre pulping raw material and chemical liquid hybrid infusion, to need certain reaction time, this process need carries out in reaction unit, generally by the reaction warehouse with a constant volume, is realized storage and the delay of slurry.
In prior art, reaction warehouse is generally trapezoidal side storehouse, and warehouse bottom is provided with the some load displacing screws that drive separately, and load displacing screw is comprised of screw shaft and helicallobe, and working speed is lower, is conventionally less than 10 revs/min.Slurry in reaction warehouse is delivered to blanking port by the continuous rotation metering of load displacing screw, then by gathering screw or band conveyor, is delivered to downstream pulping equipment.In storehouse, Material Filling Ratio is relevant with slurry stocking angle, generally reaches 70 ~ 80%, and load displacing screw fill material is and is full of compaction state.
Because extruding conquassation, chemical impregnation and reacted slurry are softening, easily kink is lumpd mutually, when load displacing screw exports the slurry blanking outside storehouse to, is piece bulk, rhythm is relevant to revolution speed of screw, often rotate a circle blanking once, be pulse condition, very easily cause downstream pulping equipment charging uneven, and frequently bear pulse shock, the fluctuation of motor load bound reaches more than one times, causes and produces and the unsettled while of stock quality, affects service life of equipment.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of chemical-mechanical pulping reaction warehouse even doffer, can realize even blanking, improves stability, the reliability produced, stable slurry quality.
Technical scheme: for solving the problems of the technologies described above, the even doffer that the utility model provides, comprises housing, is provided with load displacing screw in housing, and housing one side lower part is provided with discharging opening, described load displacing screw comprises screw shaft and is arranged on the helicallobe on screw shaft; The position that described screw shaft is positioned at discharging opening top is fixed with even blanking ring, and described even blanking ring is consistent with the central axis of described screw shaft; Described even blanking ring is provided with multiple-screw thread blade, and the rotation direction of described multiple-screw thread blade is consistent with the helicallobe rotation direction on described load displacing screw.
Preferably, the multiple-screw thread blade on described even blanking ring is directly welded on the position that screw shaft is positioned at discharging opening top.
As another kind of preferred version, described even blanking ring also comprises body, and described multiple-screw thread blade is welded on the outer wall of body, and the body set collar of described even blanking ring is around being socketed on described screw shaft.The body of described even blanking ring be by welding or bolted coupling link around being socketed on described screw shaft.
The line number of above-mentioned multiple-screw thread blade can be configured as required, is preferably circumferentially uniform 3 lines or 4 lines or 5 lines or 6 lines or 7 lines or 8 line screw thread blades.
As preferably, described doffer comprises two above load displacing screws, every load displacing screw includes screw shaft and helicallobe, the position that the screw shaft of every load displacing screw is positioned at discharging opening top is all fixed with even blanking ring, the screw shaft central axis that each even blanking ring is corresponding with it is consistent, and the helicallobe rotation direction on multiple-screw thread blade on each the even blanking ring load displacing screw corresponding with it is consistent.As further improvement of the utility model, described two above load displacing screws are individual drive respectively, and the screw shaft contrarotation of adjacent load displacing screw, can be also anti-extroversion for anti-introversion.
Preferably, the helicallobe on above-mentioned each load displacing screw is the variable-pitch auger blade changing from small to big gradually along throughput direction pitch.
Beneficial effect: the utility model can be realized even blanking by even blanking ring, be conducive to downstream pulping equipment steady production, fluctuation of load amplitude is reduced within 10 ~ 15% above by original one times, has reduced equipment failure rate, improve equipment dependability, stablized stock quality.On this basis, the utility model further can be by two above load displacing screw contrarotations, make two contrarotations of material on contiguous load displacing screw especially anti-under the common promotion of the helicallobe rotating, more balanced passing forward, then through the stirring of even blanking ring, break up, continuous uniform must fall to upstream device from discharging opening.On load displacing screw, the design of the variable pitch of helicallobe can be raised the efficiency so that material is transitioned into gradually loose condition (of surface) along screw shaft throughput direction by full state in course of conveying, reduces spiral running load and wearing and tearing.
Accompanying drawing explanation
Fig. 1 is that reaction warehouse is arranged on the structural representation on embodiment 1;
Fig. 2 is the structural representation of even blanking ring in embodiment 1;
Fig. 3 is the structural representation of embodiment 2.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
embodiment 1:reaction warehouse warehouse is arranged on structural representation on embodiment 1 as shown in Figure 1, and the warehouse 1 of reaction warehouse is trapezoidal side storehouse, and warehouse top is provided with reaction warehouse feeding mouth 2, and warehouse bottom is provided with blanking port.This even doffer comprises housing, is provided with load displacing screw in housing, and described load displacing screw comprises screw shaft 4 and is arranged on the helicallobe 5 on screw shaft.The screw shaft 4 of this load displacing screw is connected with the motor-driven that is located at housing one side, and housing opposite side bottom is provided with discharging opening 3, and the inlet point of this even doffer is the blanking port of warehouse 1 bottom of reaction warehouse.The position that described screw shaft 4 is positioned at discharging opening 3 tops is fixed with even blanking ring 6.
Evenly the structural representation of blanking ring 6 as shown in Figure 2, comprises body 601, and the outer wall of body 601 is welded with multiple-screw thread blade 602.Described multiple-screw thread blade 602 is circumferential 4 uniform line screw thread blades.Certainly can be set to as required the screw thread blade of suitable line number, as be made as circumferential uniform 2 lines or 3 lines or 5 lines or 6 lines or 7 lines or 8 line screw thread blades.
The body 601 of described even blanking ring is connected on described screw shaft 4 by welding or bolted, and evenly blanking ring 6 is consistent with the central axis of screw shaft 4; The rotation direction of described multiple-screw thread blade 602 is consistent with helicallobe 5 rotation directions on described load displacing screw.
embodiment 2:in embodiment 2, evenly the structural representation of doffer as shown in Figure 3, comprises the load displacing screw of two individual drive, is respectively the first load displacing screw and the second load displacing screw.
The first load displacing screw comprises that the position that the first screw shaft 41, the first helicallobe 51, the first screw shafts 41 are positioned at discharging opening 3 tops is fixed with the first even blanking ring 61, and its central axis is consistent with the first screw shaft 41; The first even blanking ring 61 is for to be directly welded on the 3 circumferential uniform line screw thread blades on the first screw shaft 41, and the rotation direction of this 3 line screw thread blade is consistent with the first helicallobe 51 rotation directions.
The second load displacing screw comprises that the position that the second screw shaft 42, the second helicallobe 52, the second screw shafts 42 are positioned at discharging opening 3 tops is fixed with the second even blanking ring 62, and its central axis is consistent with the second screw shaft 42; The second even blanking ring 62 is for to be directly welded on the 3 circumferential uniform line screw thread blades on the second screw shaft 42, and the rotation direction of this 3 line screw thread blade is consistent with the second helicallobe 52 rotation directions.
Under the driving of individual motor, screw shaft 42 contrarotations of the screw shaft 41 of the first load displacing screw and the second load displacing screw, can be configured to anti-introversive or anti-export-oriented as required.In this configuration, in two contrarotations of material on contiguous load displacing screw are especially anti-under the common promotion of the helicallobe rotating, more balanced passing forward, then breaks up through the stirring of even blanking ring, and continuous uniform must fall to upstream device from discharging opening 3.
embodiment 3:this even doffer comprises three load displacing screws of individual drive, and every load displacing screw includes screw shaft and helicallobe, and the position that the screw shaft of every load displacing screw is positioned at discharging opening top is all fixed with even blanking ring.
In the present embodiment, evenly blanking ring comprises body, is welded with circumferentially 5 uniform line screw thread blades on tube wall.The body of each even blanking ring is connected on corresponding screw shaft by welding or bolted, and the screw shaft central axis that each even blanking ring is corresponding with it is consistent; Helicallobe rotation direction on 5 line screw thread blades on each the even blanking ring load displacing screw corresponding with it is consistent.
Under the driving of individual motor, the screw shaft contrarotation of adjacent load displacing screw in the present embodiment, can certainly be configured to the equal rotating Vortex of screw shaft of three load displacing screws as required.
In the present embodiment, the helicallobe of above-mentioned each load displacing screw is single-wire helix blade or the multi-thread helicallobe that adopts variable pitch design, from the one end away from discharging opening to the one end that approaches discharging opening, along throughput direction pitch, changes from small to big gradually.On this load displacing screw, the design of the variable pitch of helicallobe can be raised the efficiency so that material is transitioned into gradually loose condition (of surface) along screw shaft throughput direction by full state in course of conveying, reduces spiral running load and wearing and tearing.
Now with the working process of the above-mentioned doffer of embodiment 1 casehistory:
Slurry is sent in reaction warehouse warehouse 1 continuously by the reaction warehouse feeding mouth 2 at top, load transfer device autoreaction storehouse, upstream, meet after the requirement of technological design length of the halt, in warehouse, material fullness rate is 70 ~ 80%, now load displacing screw fill material is and is full of compaction state, in the plug helix of slurry between load displacing screw helicallobe 5, is and is full of piece bulk.When being positioned at the load displacing screw of reaction warehouse bottom and starting and rotate, in plug helix, be one end that the material that is full of piece bulk is transferred to load displacing screw and approach discharging opening 3 continuously.
Slurry approaches load displacing screw tail end and before whereabouts, first passes through even blanking ring 6, and after the multiple-screw thread blade 602 on even blanking ring 6 stirs and breaks up, continuous uniform falls to upstream device, as collected, is delivered to the slurrying of postorder refining equipment.
Above embodiment does not form restriction to the utility model; especially the fixed form of the number of load displacing screw, helicallobe line number, pitch variation, even blanking ring and load displacing screw is, the line number of even blanking ring etc.; relevant staff is not within departing from the scope of the utility model technological thought; various variation and the modification carried out, all drop in protection domain of the present utility model.
Claims (8)
1. the even doffer of chemical-mechanical pulping reaction warehouse, comprise housing, in housing, be provided with load displacing screw, housing one side lower part is provided with discharging opening, described load displacing screw comprises screw shaft and is arranged on the helicallobe on screw shaft, it is characterized in that: the position that described screw shaft is positioned at discharging opening top is fixed with even blanking ring, and described even blanking ring is consistent with the central axis of described screw shaft; Described even blanking ring is provided with multiple-screw thread blade, and the rotation direction of described multiple-screw thread blade is consistent with the helicallobe rotation direction on described load displacing screw.
2. the even doffer of chemical-mechanical pulping reaction warehouse according to claim 1, is characterized in that: the multiple-screw thread blade on described even blanking ring is directly welded on the position that screw shaft is positioned at discharging opening top.
3. the even doffer of chemical-mechanical pulping reaction warehouse according to claim 1, it is characterized in that: described even blanking ring also comprises body, described multiple-screw thread blade is welded on the outer wall of body, and the body set collar of described even blanking ring is around being socketed on described screw shaft.
4. the even doffer of chemical-mechanical pulping reaction warehouse according to claim 3, is characterized in that: the body of described even blanking ring is around being socketed on described screw shaft by welding or bolted coupling link.
5. according to the even doffer of chemical-mechanical pulping reaction warehouse described in the arbitrary claim of claims 1 to 3, it is characterized in that: described multiple-screw thread blade is circumferential uniform 3 lines or 4 lines or 5 lines or 6 lines or 7 lines or 8 line screw thread blades.
6. the even doffer of chemical-mechanical pulping reaction warehouse according to claim 1, it is characterized in that: described doffer comprises two above load displacing screws, every load displacing screw includes screw shaft and helicallobe, the position that the screw shaft of every load displacing screw is positioned at discharging opening top is all fixed with even blanking ring, the screw shaft central axis that each even blanking ring is corresponding with it is consistent, and the helicallobe rotation direction on multiple-screw thread blade on each the even blanking ring load displacing screw corresponding with it is consistent.
7. the even doffer of chemical-mechanical pulping reaction warehouse according to claim 6, is characterized in that: described two above load displacing screws are individual drive respectively, the screw shaft contrarotation of adjacent load displacing screw.
8. according to the even doffer of chemical-mechanical pulping reaction warehouse described in claim 1 or 6, it is characterized in that: the variable-pitch auger blade of the helicallobe on described load displacing screw for changing from small to big gradually along throughput direction pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404566.6U CN203998182U (en) | 2014-07-21 | 2014-07-21 | The even doffer of chemical-mechanical pulping reaction warehouse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404566.6U CN203998182U (en) | 2014-07-21 | 2014-07-21 | The even doffer of chemical-mechanical pulping reaction warehouse |
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| CN203998182U true CN203998182U (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609213A (en) * | 2015-02-03 | 2015-05-13 | 浙江中科兴环能设备有限公司 | Screw material conveyor |
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2014
- 2014-07-21 CN CN201420404566.6U patent/CN203998182U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609213A (en) * | 2015-02-03 | 2015-05-13 | 浙江中科兴环能设备有限公司 | Screw material conveyor |
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