CN215490641U - Two-section centrifugal dehydrator - Google Patents
Two-section centrifugal dehydrator Download PDFInfo
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- CN215490641U CN215490641U CN202121174780.3U CN202121174780U CN215490641U CN 215490641 U CN215490641 U CN 215490641U CN 202121174780 U CN202121174780 U CN 202121174780U CN 215490641 U CN215490641 U CN 215490641U
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- rotary drum
- drum
- inner rotary
- centrifugal dehydrator
- rotating drum
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Abstract
The utility model discloses a two-section centrifugal dehydrator, which comprises an inner rotary drum and an outer rotary drum which are coaxially arranged and can rotate, wherein the inner rotary drum is arranged in the outer rotary drum, the front end of the inner rotary drum is rotatably connected with a hollow shaft provided with a feeding port, the rear end of the inner rotary drum is provided with a discharging port, the bottom end surface of the inner rotary drum is fixedly provided with a solid hub for driving the inner rotary drum to rotate, the other end of the solid hub penetrates out of the outer rotary drum and is connected with an output shaft of a speed reducer, the input end of the speed reducer is connected with an output shaft of a driving device, shaft sleeves are respectively embedded and fixed on the output shafts of the hollow shaft and the driving device, the front end and the rear end of the outer rotary drum are respectively fixed with the two shaft sleeves, the inner rotary drum and the solid hub are also provided with a plurality of helical blades, the periphery of the outer rotary drum is also provided with a shell, the front end of the outer rotary drum is provided with a discharging port, and the rear end of the outer rotary drum is provided with an overflow port, and the device can overcome the defect of poor dehydration effect of the existing sedimentation type centrifugal dehydrator, the original injection type feeding mode is improved, the pre-settling link of the material in the inner rotary drum is added, and the centrifugal dehydration effect of the material is enhanced.
Description
Technical Field
The utility model relates to the field of dewaterers, in particular to a two-section centrifugal dewaterer.
Background
The centrifugal machine is used as important solid-liquid separation mechanical equipment, has the advantages of large treatment capacity, high dehydration efficiency, small occupied area and the like, and is widely applied to the product dehydration link in the wet process of a coal preparation plant. The settling centrifugal dehydrator can accelerate the completion of the settling and concentration of solids in the coal slime water under the centrifugal action, and the equipment for discharging through the differential spiral scraper is generally used for the centrifugal dehydration of the coal slime water with the thickness below 3mm in a coal preparation plant, and particularly shows stronger adaptability when the content of-0.045 mm is higher.
The feeding of the settling centrifugal dehydrator is fed into the equipment through a central feeding pipe, the feeding enters the rotary drum through a material spraying port on an internal screw under the action of centrifugal force, the material is concentrated and separated in an annular settling area formed by slime water, the inner wall of the rotary drum of solid particles is discharged through a screw scraper to a discharged material, and the discharged material is discharged from an overflow port from annular clear liquid. The feeding of the equipment enters the rotary drum in a spraying mode, so that the stable sedimentation of an annular sedimentation area in the rotary drum is not facilitated, the solid-liquid separation is realized only through the outer rotary drum, and the defects of large moisture content of solid products, high concentration of clarified liquid and the like exist.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical defects, the utility model aims to provide a two-section centrifugal dehydrator which can overcome the defect of poor dehydration effect of the existing sedimentation type centrifugal dehydrator, improve the original injection type feeding mode, add a pre-sedimentation link of materials in an inner rotary drum and strengthen the centrifugal dehydration effect of the materials.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a two-section centrifugal dehydrator which comprises an inner rotary drum and an outer rotary drum which are coaxially arranged and can rotate, wherein the inner rotary drum is arranged in the outer rotary drum, the front end of the inner rotary drum is rotatably connected with a hollow shaft provided with a feeding hole, the rear end of the inner rotary drum is provided with a discharging hole, the bottom end face of the inner rotary drum is connected with a solid hub outputting power by a driving device, a shaft sleeve on the driving device is connected with the outer rotary drum, a plurality of spiral blades are further arranged on the inner rotary drum and the solid hub, the tail ends of the spiral blades are close to the inner wall of the outer rotary drum, a shell wrapping the outer rotary drum is further arranged on the periphery of the outer rotary drum, the front end of the outer rotary drum is provided with a discharging hole, and the rear end of the outer rotary drum is provided with an overflow hole.
Preferably, the inner drum is a conical hollow sleeve with a cone angle of 8-12 °.
Preferably, the outer rotating drum comprises a conical drum and a cylindrical drum which are connected together in a front-to-back mode, and the length of the conical drum is larger than that of the inner rotating drum.
Preferably, the discharge opening is 20-30cm higher in radial distance than the overflow opening of the outer drum.
Preferably, the speed difference between the drive and the reduction gear is set to 2%.
The utility model has the beneficial effects that: the device is provided with a conical inner rotary drum structure, and performs first-stage pre-centrifugal sedimentation on the fed materials, so that the feeding mode of the original injection is improved, the interference of second-stage centrifugal sedimentation on the materials in the outer rotary drum is reduced, the sedimentation time of slime water in the centrifuge is prolonged, and the centrifugal dehydration effect of the materials is enhanced; under the same condition, the method can obtain more clear liquid and lower water content of solid products, and has the advantages of long service life, stable operation, advanced technical indexes and large treatment capacity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a two-stage centrifugal dehydrator according to an embodiment of the present invention.
Description of reference numerals:
1-a feeding port; 2-an inner drum; 3-outward rotating drum; 4-helical blades; 5-a solid hub; 6-shaft sleeve; 7-a drive device; 8-a housing; 9-an overflow port; 10-a discharge opening; 11-discharge port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a two-section centrifugal dehydrator comprises an inner rotary drum 2 and an outer rotary drum 3 which are coaxially arranged and can rotate, wherein the inner rotary drum 2 is arranged in the outer rotary drum 3, the front end of the inner rotary drum 2 is rotatably connected with a hollow shaft provided with a feeding port 1, the rear end of the inner rotary drum 2 is provided with a discharging port 11, and the bottom end face of the inner rotary drum 2 is connected with a solid hub 5 for outputting power by a driving device 7;
the shaft sleeve 6 on the driving device 7 is connected with the outer rotating drum 3, a plurality of helical blades 4 are further arranged on the inner rotating drum 2 and the solid hub 5, the tail ends of the helical blades 4 are close to the inner wall of the outer rotating drum 3, a shell 8 for wrapping the outer rotating drum 3 is further arranged on the periphery of the outer rotating drum 3, a discharge outlet 10 is arranged at the front end of the outer rotating drum 3, and an overflow outlet 9 is arranged at the rear end of the outer rotating drum 3.
The inner rotary drum 2 is a conical hollow sleeve, and the cone angle of the inner rotary drum is 8-12 degrees.
The outer rotating drum 3 comprises a conical drum and a cylindrical drum which are connected together in a front-back mode, and the length of the conical drum is larger than that of the inner rotating drum 2.
The discharge opening 11 is 20-30cm higher in radial distance than the overflow opening 9 of the outer drum 3.
The speed difference between the drive 7 and the reduction gear is set to 2%.
When in use, the shaft sleeve 6 on the driving device 7 drives the outer rotating drum 3 to run at a high speed, and simultaneously the solid hub 5 also drives the inner rotating drum 2 and the helical blades 4 to run at a speed lower than that of the outer rotating drum 3; coal slime water is fed into the front end of the conical inner rotary drum 2 from the feeding port 1, is subjected to first-stage concentration and sedimentation under the action of centrifugal force and moves towards the rear part of the inner rotary drum 2, is finally discharged from a discharge port 11 at the rear end of the conical inner rotary drum 2 and enters the outer rotary drum 3 along the radial direction; the material is concentrated and settled in two stages in the outer rotary drum 3 to form an annular settlement area, solid particles with higher density are attached to the inner wall under the action of centrifugal force to form a settlement layer, and are gradually transported to the front end of the outer rotary drum 3 by the helical blades 4, and are discharged from a discharge port 10 at the front end of the outer rotary drum 3 after further dehydration; the annular clear liquid is discharged from an overflow port 9 at the rear end of the outer rotating drum 3.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides a two segmentation centrifugal dehydrator which characterized in that: comprises an inner rotary drum (2) and an outer rotary drum (3) which are coaxially arranged and can rotate, the inner rotary drum (2) is arranged in the outer rotary drum (3), the front end of the inner rotary drum (2) is rotatably connected with a hollow shaft provided with a feeding port (1), the rear end of the inner rotary drum (2) is provided with a discharge hole (11), the bottom end surface of the inner rotary drum (2) is connected with a solid hub (5) of a driving device (7) for outputting power, a shaft sleeve (6) on the driving device (7) is connected with the outer rotating drum (3), the inner rotary drum (2) and the solid hub (5) are also provided with a plurality of helical blades (4), the tail end of the helical blade (4) is close to the inner wall of the outer rotating drum (3), the periphery of the outer rotating drum (3) is also provided with a shell (8) for wrapping the outer rotating drum, the front end of the outer rotating drum (3) is provided with a discharge hole (10), and the rear end of the outer rotating drum (3) is provided with an overflow hole (9).
2. The two-stage centrifugal dehydrator of claim 1 wherein: the inner rotary drum (2) is a conical hollow sleeve, and the cone angle of the inner rotary drum is 8-12 degrees.
3. The two-stage centrifugal dehydrator of claim 1 wherein: the outer rotating drum (3) comprises a conical drum and a cylindrical drum which are connected together in a front-back mode, and the length of the conical drum is larger than that of the inner rotating drum (2).
4. The two-stage centrifugal dehydrator of claim 1 wherein: the discharge port (11) is 20-30cm higher than the overflow port (9) of the outer rotating drum (3) in radial distance.
5. The two-stage centrifugal dehydrator of claim 1 wherein: the speed difference between the drive (7) and the speed reducer is set to 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174780.3U CN215490641U (en) | 2021-05-28 | 2021-05-28 | Two-section centrifugal dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174780.3U CN215490641U (en) | 2021-05-28 | 2021-05-28 | Two-section centrifugal dehydrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215490641U true CN215490641U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121174780.3U Active CN215490641U (en) | 2021-05-28 | 2021-05-28 | Two-section centrifugal dehydrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215490641U (en) |
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2021
- 2021-05-28 CN CN202121174780.3U patent/CN215490641U/en active Active
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