CN213051105U - Novel scraper for centrifuge - Google Patents
Novel scraper for centrifuge Download PDFInfo
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- CN213051105U CN213051105U CN202020859415.5U CN202020859415U CN213051105U CN 213051105 U CN213051105 U CN 213051105U CN 202020859415 U CN202020859415 U CN 202020859415U CN 213051105 U CN213051105 U CN 213051105U
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- scraper blade
- scraper
- filter cake
- bottom plate
- blade
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Abstract
The invention discloses a novel scraper for a centrifuge, which comprises a bottom plate movably connected with a rotary drum, wherein a scraper blade is fixedly arranged on the bottom plate, the center of the bottom plate and the scraper blade are obliquely arranged, and a notch is arranged at the front end of the scraper blade. The scraper has a simple structure, is ingenious in design and convenient to use, a scraper blade of the scraper is welded with the bottom plate in an inclined angle, the scraper blade drives the filter cake to rotate, and simultaneously, due to the inclined blade, the filter cake is subjected to acting forces in two directions, wherein one direction is that the blade drives the filter cake to rotate in the circumferential direction, and the other direction is a component force of the inclined scraper blade extruding the filter cake to enable the filter cake to be radially outward; when the scraper rotates to the position of the notch or the hole of the material collecting groove, the filter cake is separated from the material collecting groove and is discharged from the notch or the hole. Because the scraper blade inclines to extrude the filter cake, the scraper blade can be caused to bear larger reaction force, so that a notch or a hole is designed on the scraper blade, redundant filter cake materials can flow away from the notch, the resistance of the scraper blade is reduced, and the scraper blade and the bottom plate are not welded to fall off.
Description
Technical Field
The utility model belongs to centrifuge application specifically is a novel scraper is used to centrifuge.
Background
Centrifuges are machines that utilize centrifugal force to separate components of a mixture of liquid and solid particles or liquid and liquid. The centrifuge is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are insoluble with each other in emulsion (for example, cream is separated from milk); it can also be used to remove liquids from wet solids, such as by spin drying clothes in a washing machine; the special overspeed tubular separator can also separate gas mixtures with different densities; some sedimentation centrifuges can also grade solid particles according to density or granularity by utilizing the characteristic that the solid particles with different densities or granularities have different sedimentation speeds in liquid; the action principle of the centrifugal separator includes centrifugal filtration and centrifugal sedimentation. Centrifugal filtration is to make the suspension generate centrifugal pressure under the centrifugal field to act on the filter medium, so that the liquid passes through the filter medium to become filtrate, and solid particles are trapped on the surface of the filter medium, thereby realizing liquid-solid separation; centrifugal sedimentation is the principle that components with different densities of suspension (or emulsion) are quickly settled and layered in a centrifugal force field to realize liquid-solid (or liquid-liquid) separation. As shown in fig. 1 and 2, the scraper blade of the scraper in the prior art is welded to the bottom plate at an angle of 90 degrees, or the scraper blade is welded to the bottom plate at an inclined angle, but the scraper blade has no notch, which will cause the scraper blade to take away the filter cake again, so that the filter cake is not thoroughly removed, or the scraper blade is stressed greatly, and the scraper blade is welded to the bottom plate to fall off, thus requiring improvement.
Disclosure of Invention
The invention aims to solve the problems, and provides a novel scraper for a centrifuge, which has a simple structure, is ingenious in design and convenient to use, a scraper blade of the scraper is welded with a bottom plate in an inclined angle, the scraper blade drives a filter cake to rotate, and simultaneously, due to the inclined blade, the filter cake is subjected to acting forces in two directions, wherein one direction is that the blade drives the filter cake to rotate in the circumferential direction, and the other direction is a component force of the inclined scraper blade extruding the filter cake to enable the filter cake to radially outwards; when the scraper rotates to the position of the notch or the hole of the material collecting groove, the filter cake is separated from the material collecting groove and is discharged from the notch or the hole. Because the scraper blade inclines to extrude the filter cake, the scraper blade can be caused to bear larger reaction force, so a notch or a hole is designed on the scraper blade, redundant filter cake materials can flow away from the notch, the resistance of the scraper blade is reduced, and the scraper blade and the bottom plate can not fall off in welding.
In order to realize the purpose, the invention adopts the technical scheme that: the scraper comprises a bottom plate movably connected with the rotary drum, a scraper blade is fixedly arranged on the bottom plate, the center of the bottom plate and the scraper blade are obliquely arranged, and one or the combination of a notch and a hole is arranged on the scraper blade.
Further, the center of the base plate is inclined at an angle of 10 to 15 ° with respect to the doctor blade.
Further, the bottom plate is connected with the scraper blade in a welding mode.
Further, the rotary drum is connected with the bottom plate through bolts.
The invention has the beneficial effects that: the utility model provides a novel scraper for a centrifuge, which has simple structure, ingenious design and convenient use, wherein a scraper blade of the scraper is welded with a bottom plate in an inclined angle, the scraper blade drives a filter cake to rotate, and simultaneously, the filter cake is subjected to acting forces in two directions due to the inclination of the blade, one direction is that the blade drives the filter cake to rotate in the circumferential direction, and the other direction is that the inclined scraper blade extrudes the filter cake to form a radially outward component force; when the scraper rotates to the position of the notch or the hole of the material collecting groove, the filter cake is separated from the material collecting groove and is discharged from the notch or the hole. Because the scraper blade inclines to extrude the filter cake, the scraper blade can be caused to bear larger reaction force, so a notch or a hole is designed on the scraper blade, redundant filter cake materials can flow away from the notch, the resistance of the scraper blade is reduced, and the scraper blade and the bottom plate can not fall off in welding.
Drawings
Fig. 1 shows a scraper structure of the prior art (the scraper blade is welded to the base plate at 90 degrees).
Fig. 2 shows another prior art scraper configuration (scraper blade welded at an oblique angle to the base plate, but scraper blade without notches or openings).
Fig. 3 is a schematic view of the structure of the present invention in use.
Fig. 4 is a schematic cross-sectional view taken along line a-a in fig. 3.
Fig. 5 is a front view of the structure of the present invention.
Fig. 6 is a top view of the structure of the present invention.
Fig. 7 is a side view of the structure of the present invention.
Fig. 8 is a stress analysis diagram of the structure of the utility model in the using process.
The text labels in the figures are represented as: 1. screening a screen; 2. a drum; 3. a base plate; 4. a doctor blade; 401. a notch; 402. and (4) a hole.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
As shown in fig. 3 to 8, the specific structure of the present invention is: the rotary drum comprises a base plate 3 movably connected with a rotary drum 2, a scraper blade 4 is fixedly arranged on the base plate 3, the center of the base plate 3 and the scraper blade 4 are obliquely arranged, and one or the combination of a notch 401 and a hole 402 is arranged on the scraper blade 4.
Further, the center of the base plate 3 is inclined at an angle of 10 to 15 ° with respect to the doctor blade 4.
Further, the base plate 3 is welded to the doctor blade 4.
Further, the rotary drum 2 is connected with the bottom plate 3 through bolts.
When the scraper type centrifugal machine is used specifically, in a pusher type centrifugal machine (a piston pusher type or a spiral pusher type), a filter cake intercepted by the screen mesh 1 is pushed out of the rotary drum 2 in a pulse mode under the pushing action of the rotary drum 2, is collected by the material collecting groove 5 with a gap, is scraped off by two or four scraper blades 4 symmetrically arranged on the rotary drum 2 in a tangential direction, and is discharged out of the machine from the gap position of the material collecting groove 5.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (4)
1. The novel scraper for the centrifuge is characterized by comprising a base plate (3) movably connected with a rotary drum (2), a scraper blade (4) is fixedly arranged on the base plate (3), the center of the base plate (3) is obliquely arranged with the scraper blade (4), and one or the combination of a notch (401) and a hole (402) is/are arranged on the scraper blade (4).
2. A new scraper blade for centrifuges according to claim 1, characterized in that the centre of the bottom plate (3) is arranged at an angle of 10-15 ° to the scraper blade (4).
3. The new scraper blade for centrifuges according to claim 1, characterized in that the base plate (3) is welded to the scraper blade (4).
4. The new scraper blade for centrifuges according to claim 1, characterized in that the rotating drum (2) is bolted to the bottom plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020859415.5U CN213051105U (en) | 2020-05-21 | 2020-05-21 | Novel scraper for centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020859415.5U CN213051105U (en) | 2020-05-21 | 2020-05-21 | Novel scraper for centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213051105U true CN213051105U (en) | 2021-04-27 |
Family
ID=75565948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020859415.5U Active CN213051105U (en) | 2020-05-21 | 2020-05-21 | Novel scraper for centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213051105U (en) |
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2020
- 2020-05-21 CN CN202020859415.5U patent/CN213051105U/en active Active
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