CN202148464U - Pulp screen - Google Patents
Pulp screen Download PDFInfo
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- CN202148464U CN202148464U CN201120236277U CN201120236277U CN202148464U CN 202148464 U CN202148464 U CN 202148464U CN 201120236277 U CN201120236277 U CN 201120236277U CN 201120236277 U CN201120236277 U CN 201120236277U CN 202148464 U CN202148464 U CN 202148464U
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- screen
- screen frame
- pulp
- rotary blade
- frame
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Abstract
A pulp screen, comprising a machine frame, a screen frame and a drive device; a plurality of rotating fins connected with the drive device are installed in the screen frame; the cross section of the rotating fin has an arc-shaped structure with one thicker side and one thinner side; the work surface of the rotating fin is an arc-shaped surface, of which the axial line is parallel to that of the screen frame; and a plurality of turbulence slots are arranged at the position where the work surface of the rotating fin is closed to the screen frame. The pulp screen provided in the utility model strengthens the turbulence of the slurry around screen cuts and ensures that the screen cuts or screen holes are not blocked through using the rotating fins with above structure, arranging turbulence slots and the running slurry at the turbulence slots forming many times of pulses with suitable strength; the rotating fins run in a lowest linear speed; the strength of the head pulses of the rotating fins is greatly reduced by the lowest linear speed; impurities are avoided being forced to the screen cuts or screen holes; and the purification efficiency is greatly improved.
Description
Technical field
The utility model relates to the Waste Paper Handling field, particularly a kind of pulp screen that is used to remove secondary stock impurity.
Background technology
Shown in existing pulp screen such as Fig. 1-4, the rotary blade that is connected with drive unit rotates in screen frame, relies on the suction between rotary blade working face and the screen frame to sift out the impurity in the secondary stock; Its effect is in the working face rotation near screen frame one side; Rely on head flushing and afterbody suction, make sieve aperture or sieve seam place slurry be in pulse state, be unlikely to stop up sieve aperture or sieve seam; Thereby keep sieve aperture or the normal mediation state of sieve seam, make the screening the pulp normally of screening the pulp function.Present rotary blade is fusiform basically, and head is short and thicker, and afterbody is long and thinner; Like Fig. 1, shown in Figure 2; And be twisted into as shown in Figure 4 spiral yarn shapedly around screen frame, its inclination angle is between 10～30 °, and effect base reason is that impurity is promoted toward the deslagging direction; Realize the purpose that screenings separates, also increased the working face area of rotary blade simultaneously.Because its profile is that multidirectional curved surface is compound, difficulty of processing is very big, mostly adopts the artificial polishing in casting back; Precision and dynamic balancing all can't guarantee, cause the gap of rotary blade and screen frame must transfer very greatly, are generally 3～6mm; It is descended to sieving the seam or the punching press of sieve aperture and the effect of suction greatly,, then can only improve the linear velocity of rotary blade in order to keep its effect; Perhaps increase the quantity of rotary blade, make power consumption increase greatly, purification efficiency descends greatly.
The requirement that paper-making pulping purifies pulp screen is high purification efficiency, low power consumption.And realize this 2 point, and the one, tiny sieve seam and sieve aperture are used in requirement, and two are to use very low rotor linear velocity, and present rotary blade is difficult to reach this 2 requirements.Domestic sieve seam only can reach >=0.1mm, linear velocity only can >=13m/s.Therefore, power consumption is pressed the screen frame area and is calculated every square metre of need 45～90kw.
Summary of the invention
The purpose of the utility model provides a kind of pulp screen, can improve purification efficiency, reduces power consumption.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of pulp screen, comprise frame, screen frame and drive unit, and a plurality of rotary blades that are connected with drive unit are installed in the screen frame;
Its cross section of described rotary blade has thicker another the thin arcuate structure of a side, and its working face is an arcwall face, the axis of this arcwall face and the parallel axes of screen frame;
Position near screen frame on the working face of rotary blade is provided with many stirred tanks.
Also be provided with many guiding gutters on the working face of described rotary blade, described guiding gutter and horizontal plane have angle.
Described guiding gutter is lower near the height and position of thicker side, and is higher near the height and position of thin side.
The angle of described guiding gutter and horizontal plane is 25-35 °.
Described guiding gutter is four.
A kind of pulp screen that the utility model provides, through the stirred tank that on the rotary blade working face, is provided with, the slurry at the stirred tank place in service has formed repeatedly the suitably pulse of intensity; Strengthen near the turbulent flow of the slurry sieve seam; Thereby guarantee that sieve seam or sieve aperture are unlikely to stop up, rotary blade can be with minimum linear velocity operation, and low linear velocity has reduced the intensity of rotary blade head pulse widely; Avoid impurity to be pushed through sieve seam or sieve aperture by force, improved purification efficiency widely.
Further,, when rotary blade rotates, produce enough thrust, promptly from slag-drip opening, discharge near the slag slurry of screen frame to slag-drip opening owing to adopt the structure of guiding gutter.Avoid the slag slurry to rest near " leakage " screen frame easily of screen frame, further promote clean-up effect.Structure thus; Thereby can adopt working face is arcwall face, and rotary blade is twisted into spiral yarn shaped multidirectional curved surface composite construction around screen frame and compares in the structure of the axis of this arcwall face and the parallel axes of screen frame, the structure of the axis of arcwall face and the parallel axes of screen frame and prior art; Reduced difficulty of processing; Improved element precision, thereby the gap of rotary blade and screen frame can be done enough little for example 1mm only helps further to improve purification efficiency.
The raising of purification efficiency also makes linear velocity can drop to 5～8m/s.Therefore, power consumption is calculated every square metre by the screen frame area and is only needed 7.5kw.Compare power consumption than prior art and reduce by 40～85%, reduced power consumption widely.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the overall structure sketch map of existing pulp screen.
Fig. 2 is the rotary blade of existing pulp screen and the partial structurtes sketch map of screen frame.
Fig. 3 is the partial enlarged drawing at A place among Fig. 2.
Fig. 4 is the perspective view of existing rotary blade.
Fig. 5 is the partial structurtes sketch map of rotary blade and screen frame in the utility model.
Fig. 6 is the perspective view of rotary blade in the utility model.
The specific embodiment
In Fig. 5, Fig. 6, a kind of pulp screen comprises frame, screen frame 2 and drive unit, and a plurality of rotary blades that are connected with drive unit 1 are installed in the screen frame 2;
Described rotary blade 1 its cross section has thicker another the thin arcuate structure of a side, and its working face is an arcwall face, the parallel axes of the axis of this arcwall face and screen frame 2; Rotary blade 1 only is vertical curved surface composite construction, is convenient to machining, for example adopts milling machine to mill, thereby has improved machining accuracy and dynamic balancing.Working face described herein is near the face of screen frame 2 on the rotary blade 1.
Position near screen frame 2 on the working face of rotary blade 1 is provided with many stirred tanks 11.This stirred tank 11 is vertically to arrange, and is parallel to each other between many stirred tanks 11.The cross section of stirred tank 11 is triangle or circular arc.
In Fig. 6, also be provided with many guiding gutters 12 on the working face of described rotary blade 1, described guiding gutter 12 has angle with horizontal plane.Described guiding gutter 12 is lower near the height and position of thicker side, and is higher near the height and position of thin side.Described guiding gutter 12 is 25-35 ° with the angle of horizontal plane.This structure produces the enough thrust to slag-drip opening for the slag slurry after sieving, and the slag slurry is promptly discharged from slag-drip opening.Avoid the slag slurry to rest near " leakage " screen frame easily of screen frame, clean-up effect is greatly promoted.
In this example, described guiding gutter 12 is four.
Adopt above-mentioned structure, rotary blade and gap, screen frame anastomosis can reach and be lower than 1mm, and linear velocity can drop to 5～8m/s, calculate every square metre by the screen frame area and only need 7.5kw.
Claims (5)
1. a pulp screen comprises frame, screen frame (2) and drive unit, it is characterized in that: a plurality of rotary blades that are connected with drive unit (1) are installed in the screen frame (2);
Its cross section of described rotary blade (1) has thicker another the thin arcuate structure of a side, and its working face is an arcwall face, the parallel axes of the axis of this arcwall face and screen frame (2);
Position near screen frame (2) on the working face of rotary blade (1) is provided with many stirred tanks (11).
2. a kind of pulp screen according to claim 1 is characterized in that: also be provided with many guiding gutters (12) on the working face of described rotary blade (1), described guiding gutter (12) has angle with horizontal plane.
3. a kind of pulp screen according to claim 2 is characterized in that: described guiding gutter (12) is lower near the height and position of thicker side, and is higher near the height and position of thin side.
4. a kind of pulp screen according to claim 3 is characterized in that: described guiding gutter (12) is 25-35 ° with the angle of horizontal plane.
5. according to claim 2,3 or 4 described a kind of pulp screens, it is characterized in that: described guiding gutter (12) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120236277U CN202148464U (en) | 2011-07-06 | 2011-07-06 | Pulp screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120236277U CN202148464U (en) | 2011-07-06 | 2011-07-06 | Pulp screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202148464U true CN202148464U (en) | 2012-02-22 |
Family
ID=45589527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120236277U Expired - Fee Related CN202148464U (en) | 2011-07-06 | 2011-07-06 | Pulp screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202148464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242515A (en) * | 2011-07-06 | 2011-11-16 | 湖北宝塔纸业有限公司 | Pulp screening machine |
-
2011
- 2011-07-06 CN CN201120236277U patent/CN202148464U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242515A (en) * | 2011-07-06 | 2011-11-16 | 湖北宝塔纸业有限公司 | Pulp screening machine |
| CN102242515B (en) * | 2011-07-06 | 2013-08-14 | 湖北宝塔纸业有限公司 | Pulp screening machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The Yangtze River Road 443007 Hubei city of Yichang Province in Xiaoting District No. 6 Patentee after: Hubei Pei Bo pagoda Cycle Technology Co Ltd Address before: The Yangtze River Road 443007 Hubei city of Yichang Province in Xiaoting District No. 6 Patentee before: Hubei Baota Paper Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20180706 |