CN212263584U - Double-cone centrifuge - Google Patents
Double-cone centrifuge Download PDFInfo
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- CN212263584U CN212263584U CN202020543952.9U CN202020543952U CN212263584U CN 212263584 U CN212263584 U CN 212263584U CN 202020543952 U CN202020543952 U CN 202020543952U CN 212263584 U CN212263584 U CN 212263584U
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Abstract
This patent relates to centrifuges. The double-cone centrifuge comprises a horizontal spiral centrifuge body, wherein the horizontal spiral centrifuge body comprises a rotary drum and a spiral feeder positioned in the rotary drum, the rotary drum consists of a straight-section rotary drum and a conical-section rotary drum, the straight-section rotary drum and the conical-section rotary drum are both conical, the cone angle of the straight-section rotary drum is 5-8 degrees, the cone angle of the conical-section rotary drum is 35-45 degrees, and the large end of the straight-section rotary drum is connected with the large end of the conical-section rotary drum; the spiral feeder comprises a first sub-spiral feeder positioned in the straight section rotary drum and a second sub-spiral feeder positioned in the conical section rotary drum, the spiral angle of a spiral blade of the first sub-spiral feeder is 5-8 degrees, and the spiral angle of a spiral blade of the second sub-spiral feeder is 35-45 degrees. This patent has been selected the form of rotary drum, screw feeder's helical blade's spiral angle, and the supernatant of the big end department of straight section rotary drum is more clear, the sediment is more compact.
Description
Technical Field
The utility model relates to the field of machinary, concretely relates to centrifuge.
Background
With the development of science and technology and the improvement of production technology, a double-cone centrifuge faces new challenges, particularly solid-liquid separation in high-end fields such as medicine, biology, fine industry and the like, and the existing horizontal spiral discharge sedimentation centrifuge (hereinafter referred to as a horizontal spiral centrifuge) cannot be sufficient, because the material characteristics of the industries are that solid particles are fine, the specific gravity difference of solid and liquid phases is small, and the structural characteristics and separation factors of the centrifuge are not enough to achieve ideal separation effects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bipyramid centrifuge to solve above-mentioned technical problem.
The utility model provides a technical problem can adopt following technical scheme to realize:
the double-cone centrifuge comprises a horizontal spiral centrifuge body, wherein the horizontal spiral centrifuge body comprises a rotary drum and a spiral feeder positioned in the rotary drum, and is characterized in that the rotary drum consists of a straight-section rotary drum and a conical-section rotary drum, the straight-section rotary drum and the conical-section rotary drum are both conical, the cone angle of the straight-section rotary drum is 5-8 degrees, the cone angle of the conical-section rotary drum is 35-45 degrees, and the large end of the straight-section rotary drum is connected with the large end of the conical-section rotary drum;
the spiral feeder comprises a first sub-spiral feeder positioned in the straight section rotary drum and a second sub-spiral feeder positioned in the conical section rotary drum, the spiral angle of a spiral blade of the first sub-spiral feeder is 5-8 degrees, and the spiral angle of a spiral blade of the second sub-spiral feeder is 35-45 degrees.
This patent has been selected the form of rotary drum, screw feeder's helical blade's spiral angle to make the material in the process of marcing in the straight section rotary drum, liquid layer depth (fluid interface to the degree of depth of rotary drum inner wall) deepens gradually, the separation factor that the solid matter received in the material simultaneously (Fr ═ omega-2R/g, radius R gradually increasing) becomes progressively larger, so the supernatant at the large end of the straight-section drum is cleaner and the sediments are denser. When the sediment enters the conical section rotary drum from the straight section rotary drum, the conical section rotary drumThe section is gradually reduced, so that the sediment can be compressed, extrusion force is generated on the sediment, and the extrusion force is provided by the combined force formed by the thrust of the helical blade and the static pressure of the fluid, so that the sediment with lower water (liquid) content is discharged from the solid phase outlet, and the process requirement is met. Furthermore, the conical configuration allows the drum to be of a shorter length, whereby the overall length of the drum is shorter and the rigidity and stability are easier to ensure.
The feeding channels are arranged in the first sub-spiral feeder and the second sub-spiral feeder and are communicated with each other, an opening enabling the feeding channels to be communicated with an inner cavity of the straight section rotary drum is formed in the side wall of the first sub-spiral feeder, the opening is close to the small end of the straight section rotary drum, a solid phase outlet is formed in the side wall of the conical section rotary drum, and the solid phase outlet is close to the small end of the conical section rotary drum.
The structure enables the materials to firstly move from the small end of the conical section rotary drum to the small end of the straight section rotary drum in the feeding channel, enter the inner cavity of the rotary drum after reaching the small end of the straight section rotary drum, and move from the small end of the straight section rotary drum to the small end of the conical section rotary drum. Thereby realizing the parallel flow type layout, having longer material flow and enough retention time to realize the thorough solid-liquid separation.
The junction of the straight section rotary drum and the conical section rotary drum is provided with a groove with an inward opening, and an annular baffle is arranged in the groove. When the sediments enter the conical section rotary drum from the straight section rotary drum, the sediments need to pass through the annular baffle plate, the section of the annular baffle plate is greatly reduced, so the sediments are necessarily further compressed, the extrusion force is provided by the resultant force formed by the thrust of the helical blades and the static pressure of the fluid, and the sediments with lower water (liquid) content are discharged from the solid phase outlet, so that the process requirements are met.
The annular baffle can be a circular annular baffle or a one-sixth to one-third circular annular baffle. When the annular baffle which is one sixth to one third circular ring is adopted, the center of the annular baffle and the center of the solid phase outlet are positioned at the same side of the rotary drum.
Further preferably, a line connecting the center of the annular baffle and the center of the solid phase outlet is on the same plane as the central axis of the second sub-screw feeder.
The spiral feeder is provided with a centripetal pump, the centripetal pump is close to the large end of the straight-section rotary drum, and a feed inlet of the centripetal pump is communicated with an inner cavity of the rotary drum. Preferably, two ends of the rotary drum are respectively provided with a set of bearing, the bearing positioned on the small end side of the straight rotary drum is taken as a small end main bearing 1, the bearing positioned on the small end side of the conical rotary drum is taken as a large end main bearing, the feeding channel extends towards the large end main bearing and penetrates through the large end main bearing, an opening of the feeding channel positioned on one side, far away from the rotary drum, of the large end main bearing is taken as a feeding hole, the centripetal pump is connected with a clear liquid outlet through a transmission pipeline, and the clear liquid outlet is also positioned on one side, far away from the rotary drum, of the large.
Preferably, the centrifugal pump is rotatably connected with the spiral feeder through a rotating shaft, an adjusting handle is arranged on one side, away from the rotary drum, of the large-end main bearing, and the adjusting handle is connected with the rotating shaft through a transmission mechanism. The height of the feed inlet of the centripetal pump is adjusted by adjusting the angle of the rotating shaft through the adjusting handle, so that the liquid interface is adjusted, the clear liquid on the inner side of the liquid interface is sucked out, the clear liquid on the outer side of the liquid interface flows in the rotary drum, and different solid-liquid separation degrees are set according to different requirements.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is a partial cross-sectional structural view of the junction of a straight drum and a conical drum;
FIG. 3 is a cross-sectional view of a centrifugal pump and its drive mechanism;
fig. 4 is a partial structural schematic diagram at the centrifugal pump.
Detailed Description
For the utility model discloses the technical means, creation characteristic, achievement purpose and efficiency that realize are easily understood and are known, combine specific diagram below, further explain the utility model discloses.
Referring to fig. 1, 2, 3 and 4, the double-cone centrifuge comprises a horizontal screw centrifuge body which comprises a rotary drum and a horizontal screw centrifuge body positioned in the rotary drumThe rotary drum consists of a straight-section rotary drum and a conical-section rotary drum, both the straight-section rotary drum 2 and the conical-section rotary drum 3 are conical, the cone angle of the straight-section rotary drum 2 is 5-8 degrees, the cone angle of the conical-section rotary drum 3 is 35-45 degrees, and the large end of the straight-section rotary drum 2 is connected with the large end of the conical-section rotary drum 3; the screw feeder comprises a first sub screw feeder positioned in the straight section rotary drum 2 and a second sub screw feeder positioned in the conical section rotary drum 3, the screw angle of the screw blade of the first sub screw feeder is 5-8 degrees, and the screw angle of the screw blade 10 of the second sub screw feeder is 35-45 degrees. Preferably, the screw feeders comprise a first sub screw feeder positioned in the straight rotary drum 2 and a second sub screw feeder positioned in the conical rotary drum 3, the screw angle of the screw blade of the first sub screw feeder is equal to the cone angle of the straight rotary drum 2, and the screw angle of the screw blade 10 of the second sub screw feeder is equal to the cone angle of the conical rotary drum 3. This patent has been selected the form of rotary drum, screw feeder's helical blade's spiral angle to make the material in the process of marcing in straight section rotary drum 2, liquid layer depth (fluid interface to the degree of depth of rotary drum inner wall) deepens gradually, the separation factor that the solid matter received in the material simultaneously (Fr ═ omega2R/g, radius R gradually increasing) becomes progressively larger, so the supernatant at the large end of the straight drum 2 is cleaner and the sediment is denser. When the sediment enters the conical section rotary drum 3 from the straight section rotary drum 2, the section of the conical section rotary drum 3 is gradually reduced, so that the sediment can be compressed, extrusion force is generated on the sediment, the extrusion force is provided by the resultant force formed by the thrust of the helical blades and the static pressure of fluid, the sediment with lower water (liquid) content is discharged from a solid phase outlet, and the process requirements are met. Furthermore, the conical configuration allows the drum to be of a shorter length, whereby the overall length of the drum is shorter and the rigidity and stability are easier to ensure.
All be equipped with the pay-off passageway in first sub-spiral feeder, the second sub-spiral feeder, two pay-off passageways UNICOM, it has the opening that makes pay-off passageway and straight section rotary drum 2's inner chamber UNICOM to open on the lateral wall of first sub-spiral feeder, and the opening is close to the tip of straight section rotary drum 2, and it has the solid phase export to open on the lateral wall of conical section rotary drum 3, and the solid phase export is close to the tip of conical section rotary drum 3. The structure enables the materials to firstly move from the small end of the conical section rotary drum 3 to the small end of the straight section rotary drum 2 in the feeding channel, enter the inner cavity of the rotary drum after reaching the small end of the straight section rotary drum 2, and move from the small end of the straight section rotary drum 2 to the small end of the conical section rotary drum 3. Thereby realizing the parallel flow type layout, having longer material flow and enough retention time to realize the thorough solid-liquid separation.
The juncture of the straight rotary drum 2 and the conical rotary drum 3 is provided with a groove with an inward opening, and an annular baffle 9 is arranged in the groove. When the sediments enter the conical section rotary drum 3 from the straight section rotary drum 2, the sediments need to pass through the annular baffle 9, the section of the annular baffle 9 is greatly reduced, so the sediments are necessarily further compressed, the extrusion force is provided by the resultant force formed by the thrust of the helical blades and the static pressure of the fluid, and the sediments with lower water (liquid) content are discharged from the solid phase outlet, so the process requirements are met. The annular baffle 9 may be a circular annular baffle, or a one-sixth to one-third circular annular baffle. When the annular baffle which is in a ring shape of one sixth to one third is adopted, the center of the annular baffle and the center of the solid phase outlet are positioned at the same side of the rotary drum. Further preferably, a line connecting the center of the annular baffle and the center of the solid phase outlet is on the same plane with the central axis of the second sub-screw feeder.
The spiral feeder is provided with a centripetal pump 7, and the centripetal pump 7 is close to the large end 8 of the straight rotary drum 2. Preferably, two ends of the rotary drum are respectively provided with a set of bearing, the bearing positioned on the small end side of the straight rotary drum 2 is used as a small end main bearing 1, the bearing positioned on the small end side of the conical rotary drum 3 is used as a large end main bearing 4, the feeding channel extends towards the large end main bearing 4 side and penetrates through the large end main bearing, an opening of the feeding channel positioned on one side, far away from the rotary drum, of the large end main bearing is used as a feeding hole, the centripetal pump 7 is connected with a clear liquid outlet through a transmission pipeline, and the clear liquid outlet is also positioned on one side, far away from the. Preferably, the centripetal pump 7 is rotatably connected with the spiral feeder through a rotating shaft, an adjusting handle 5 is arranged on one side, away from the rotary drum, of the large-end main bearing, and the adjusting handle 5 is connected with the rotating shaft through a transmission mechanism. The height of the feed inlet of the centripetal pump 7 is adjusted by adjusting the angle of the rotating shaft through the adjusting handle, so that the liquid interface 6 is adjusted, the clear liquid on the inner side of the liquid interface 6 is sucked out, the clear liquid on the outer side of the liquid interface 6 flows in the rotary drum, and different solid-liquid separation degrees are set according to different requirements.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The double-cone centrifuge comprises a horizontal spiral centrifuge body, wherein the horizontal spiral centrifuge body comprises a rotary drum and a spiral feeder positioned in the rotary drum, and is characterized in that the rotary drum consists of a straight-section rotary drum and a conical-section rotary drum, the straight-section rotary drum and the conical-section rotary drum are both conical, the cone angle of the straight-section rotary drum is 5-8 degrees, the cone angle of the conical-section rotary drum is 35-45 degrees, and the large end of the straight-section rotary drum is connected with the large end of the conical-section rotary drum;
the spiral feeder comprises a first sub-spiral feeder positioned in the straight section rotary drum and a second sub-spiral feeder positioned in the conical section rotary drum, the spiral angle of a spiral blade of the first sub-spiral feeder is 5-8 degrees, and the spiral angle of a spiral blade of the second sub-spiral feeder is 35-45 degrees.
2. The double-cone centrifuge of claim 1, wherein the first sub-screw feeder and the second sub-screw feeder are each provided with a feeding channel therein, the two feeding channels are communicated, the side wall of the first sub-screw feeder is provided with an opening for communicating the feeding channel with the inner cavity of the straight-section rotating drum, the opening is close to the small end of the straight-section rotating drum, the side wall of the conical-section rotating drum is provided with a solid phase outlet, and the solid phase outlet is close to the small end of the conical-section rotating drum.
3. A double-cone centrifuge according to claim 2, wherein a groove with an inward opening is formed at the junction of the straight section rotating drum and the conical section rotating drum, and an annular baffle is arranged in the groove.
4. A double cone centrifuge according to claim 3, wherein said ring baffle is a ring baffle in the shape of a circular ring, or alternatively, said ring baffle is a ring baffle in the shape of a one sixth to one third circular ring.
5. A double cone centrifuge according to claim 4, wherein the centre of the annular baffle and the centre of the solid phase outlet are located on the same side of the bowl.
6. A double cone centrifuge according to claim 5, wherein the line between the centre of the annular baffle and the centre of the solid phase outlet is in the same plane as the central axis of the second sub screw feeder.
7. A double-cone centrifuge according to any of claims 2 to 6, wherein a centripetal pump is provided on the screw feeder, the centripetal pump is located near the large end of the straight-section rotating drum, and the feed inlet of the centripetal pump is in communication with the inner cavity of the rotating drum.
8. A double cone centrifuge according to claim 7 wherein the bowl is provided with a set of bearings at each end, the bearing at the small end of the straight bowl being the small end main bearing and the bearing at the small end of the conical bowl being the large end main bearing, the feed channel extending towards and through the large end main bearing, the opening of the feed channel at the large end main bearing remote from the bowl being the feed inlet, the centripetal pump being connected to the clear liquid outlet via a drive conduit, the clear liquid outlet also being located at the large end main bearing remote from the bowl.
9. A double cone centrifuge according to claim 8, wherein the centripetal pump is rotatably connected to the screw feeder by a shaft, and the large end main bearing is provided with an adjustment handle on a side remote from the bowl, the adjustment handle being connected to the shaft by a transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020543952.9U CN212263584U (en) | 2020-04-14 | 2020-04-14 | Double-cone centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020543952.9U CN212263584U (en) | 2020-04-14 | 2020-04-14 | Double-cone centrifuge |
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| Publication Number | Publication Date |
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| CN212263584U true CN212263584U (en) | 2021-01-01 |
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| CN202020543952.9U Active CN212263584U (en) | 2020-04-14 | 2020-04-14 | Double-cone centrifuge |
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| CN (1) | CN212263584U (en) |
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