CN202173999U - Fluid acceleration structure for horizontal decanter centrifuge - Google Patents
Fluid acceleration structure for horizontal decanter centrifuge Download PDFInfo
- Publication number
- CN202173999U CN202173999U CN2011201684170U CN201120168417U CN202173999U CN 202173999 U CN202173999 U CN 202173999U CN 2011201684170 U CN2011201684170 U CN 2011201684170U CN 201120168417 U CN201120168417 U CN 201120168417U CN 202173999 U CN202173999 U CN 202173999U
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- blade
- transition conduit
- feed
- speeding
- material inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2033—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with feed accelerator inside the conveying screw
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Abstract
The utility model provides a fluid acceleration structure for a horizontal decanter centrifuge, the fluid acceleration structure comprises a transversely-disposed long cylindrical spiral conveyor, one end is a conical section, and the other end is a cylindrical section, a material overflowing chamber and a material inlet chamber are provided in the spiral conveyor, one transition pipe is disposed in the material inlet chamber, the material inlet end of the transition pipe is provided with a flange plate, the surface of the flange plate clings to the material inlet end wall of the material inlet chamber, and the two are fixedly installed, the material inlet pipe extends into the material inlet end of the transition pipe, the material outlet end of the transition pipe is provided with a loop of acceleration blades, an intersecting line of the blade surface root part of the acceleration blades and the outer periphery of the transition pipe is parallel to the axis of the transition pipe, the blade surface top is adjacent to the annular side wall of the material inlet chamber, on a longitudinal cross section perpendicular to the axis of the transition pipe, the acceleration blades are in the shape of an ''S'', the blade surface top part and the root part are oppositely folded, one section of the acceleration blades extends out of the material outlet end of the transition pipe. Via the fluid acceleration structure, a certain initial speed is provided before layering of materials, facilitating layering and separation of the materials; the fluid acceleration structure for a horizontal decanter centrifuge is advantaged by simple structure, easy machining, and good reliability.
Description
Technical field
The utility model relates to a kind of accelerating structure, relates in particular to horizontal screw centrifuge.
Background technology
The basic functional principle of horizontal helical type centrifuge is: after material enters into the machine rotary drum from the central feed pipe of hollow auger conveyor; The liquid distribution that density is little forms pendular ring on auger conveyor stack shell outer wall, the solid slag that density is big is deposited in drum inner wall under action of centrifugal force.Auger conveyor will be consolidated slag continuously and push cone part, device for transferring from the barrel portion of rotary drum to through helical structure.
Liquid in the horizontal screw centrifuge rotor receive two on rotary drum and spiral in the same way the differential rotary part driving and move.If do not consider the supply material at feed pipe place; When rotary drum asynchronous with spiral, but when both rotating speeds differed very little again, the solid slag of rotatory drum wall was promoted by helical blade; The suffered spiral influence of liquid is very little in the machine; The same when rotating synchronously with spiral as rotary drum, form orderly flow ring, can be regarded as laminar condition.
During actual the use, but need constantly to handle supply material from the feed pipe place.Material is axial motion in feed pipe, gets in the spiral cavity, overflows the spiral discharging mouth then, gets into the pendular ring layer region between spiral and the rotary drum.This moment, liquid changed the direction of motion, and to outwards throwing away, near the zone of the above-mentioned laminar condition in an orderly manner spiral discharging mouth destroyed through the spiral discharging bore; Gu slag and clear liquid mix; The flow ring no longer is simple to rotate synchronously with the rotary drum spiral, and it suffers the bump of outside current, this moment current the zone of process form turbulence state confusion, unordered; Do not form the solid slag of desirable skin, the liquid-flow state of central pendular ring.This situation causes great negative effect for the Separation of Solid and Liquid of horizontal screw centrifuge, the solid-liquid separation effect variation.
The utility model content
The utility model technical problem to be solved is to provide a kind of and can before material gets into rotary drum, in auger conveyor, quickens, make material when getting into rotary drum, to have the horizontal screw centrifuge fluid accelerating structure of certain rotation initial velocity to material.
The utility model is realized through following technical scheme:
A kind of fluid accelerating structure of horizontal screw centrifuge, said horizontal screw centrifuge comprise the long tubular auger conveyor of landscape configuration, and the one of which end is a conical section, and an end is a cylindrical section,
On the cylindrical section of auger conveyor; Dispose some dividing plates perpendicular to axis; The cylindrical section inner chamber is divided into the multistage separate chamber, is followed successively by material overflow cavity and feed cavity near two chambers of stack shell conical section, the material overflow cavity bottom is offered elongated opening and is communicated with the rotary drum inner chamber; The feed cavity top is offered microscler discharging opening and is communicated with the rotary drum inner chamber
Feed pipe inserts in the feed cavity along the auger conveyor axis, leaves radial clearance between feed pipe and the auger conveyor inner chamber,
It is characterized in that:
Transition conduit of configuration in feed cavity, transition conduit axis and auger conveyor dead in line,
The transition conduit feed end has ring flange, and the ring flange card is close to the feed end end wall of feed cavity, both fixed installations, and feed pipe stretches in the transition conduit feed end, and leaves radial clearance between the transition conduit,
The transition conduit discharge end has a circle speeding-up blade; Speeding-up blade is circumferentially evenly arranged along transition conduit, the intersection of speeding-up blade blade face root and transition conduit outer circumference surface and transition conduit parallel axes, and the top, blade face is near the annular sidewall of feed cavity; On longitudinal cross-section perpendicular to the transition conduit axis; Speeding-up blade is serpentine, top, blade face and root inverse bending
Speeding-up blade stretches out outside the transition conduit discharge end, near feed cavity bottom end wall for one section, and the gap between the root of blade section of stretching out forms the charging aperture of speeding-up blade, and charging aperture quantity equals blade quantity, and charging aperture area sum is greater than the cross-sectional area of transition conduit inner chamber.
The design concept of this utility model is a kind of fluid accelerating structure of design in feed cavity: when fluid gets into rotary drum from feed pipe; Not being that the picture tradition is simple directly injects; But constantly quicken through the curved surface bucket of fluid accelerating structure; When flowing out the discharging opening of auger conveyor, fluid just has the rotation initial velocity near the rotary drum rotating speed.
This synchronized is made up of a ring flange, some speeding-up blades, a transition conduit; The ring flange size is consistent or less than normal slightly with spiral stack shell inner chamber size, can connect the ways of connecting of perhaps pinning through welding, bolt and be fixed on the feed end end wall of feed cavity.Material gets into the ring flange end of transition conduit from feed pipe, and the blade charging aperture on blade end flows out, gets into the space between the speeding-up blade.Because ring flange and auger conveyor are fixed together, so the fluid accelerating structure has identical rotating speed with auger conveyor, material through the speeding-up blade acceleration after, its rotating speed at vane tip is approaching auger conveyor rotating speed.The no longer continuous original laminar condition of destruction of fluid that flow out from auger conveyor this moment, and but incorporate one with the laminar flow structure rapidly and rotate, the solid slag blanket on the while rotatory drum wall also is not affected, centrifuge separating effect will be better.
For avoiding fluid stopping up, the speeding-up blade charging aperture that the gap between the root of blade section of stretching out forms, its area should be greater than the cross-sectional area of transition conduit inner chamber.
Speeding-up blade adopts similar S type blade, and this design is accelerating fluid effectively, makes its blade outer end flow velocity more near revolution speed of screw.Blade quantity is generally 3～5, is preferably 4, is beneficial to flowing of fluid.
The beneficial effect of the utility model is:
1, through the fluid accelerating structure, can before material layering, make it have certain initial velocity, be beneficial to material layering, separation;
2, simple in structure, utilization processing, good reliability.
Description of drawings
Fig. 1 is the operation principle sketch map of horizontal helical type centrifuge
Fig. 2 cuts open stereogram for a kind of auger conveyor 1/4 of horizontal helical type centrifuge
Fig. 3 is the three-dimensional structure diagram of the utility model
Fig. 4 is the front view of Fig. 3
Fig. 5 is the side diagrammatic sketch of Fig. 3
Fig. 6 is the assembling sketch map of Fig. 3 in Fig. 2
In Fig. 1～6: 1 is auger conveyor, and 1-1 is a material overflow cavity, and 1-2 is a feed cavity, and 1-3 is a spiral, and 1-4 is the feed end end wall, and 1-5 is the bottom end wall, and 2 is feed pipe, and 3 is transition conduit, and 4 is ring flange, and 5 is speeding-up blade, and 5-1 is a charging aperture, and 6 is rotary drum.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Shown in Figure 1 is the operation principle of horizontal helical type centrifuge; After material enters into machine rotary drum 6 from hollow auger conveyor 1 central feed pipe 2; The liquid distribution that density is little forms pendular ring on auger conveyor 1 stack shell outer wall, the solid slag that density is big is deposited in rotary drum 6 inwalls under action of centrifugal force.Auger conveyor 1 will be consolidated slag continuously and push tapered segment, device for transferring from the barrel portion of rotary drum 6 to through spiral 1-3.During actual the use, material receives axial thrust, does axially-movable in feed pipe 2, gets in the B section of auger conveyor 1, overflows the spiral discharging mouth then, gets into the A section.Because the material that get into this moment does not rotate initial velocity; Therefore destroyed the flow ring structure that itself is in stratification state in the A section; Gu slag and clear liquid mix, the flow ring no longer is simple and rotary drum 1, spiral 1-3 rotate synchronously, and it suffers the bump of outside current; This moment current the zone of process form chaotic, unordered turbulence state, do not form the liquid-flow state of the solid slag of desirable skin, central pendular ring.This situation causes great negative effect for the Separation of Solid and Liquid of horizontal screw centrifuge, the solid-liquid separation effect variation.
Be a kind of existing auger conveyor structure shown in Fig. 2, the one of which end is a conical section, and an end is a cylindrical section; On the cylindrical section of auger conveyor 1, dispose some dividing plates, the cylindrical section inner chamber is divided into the multistage separate chamber perpendicular to axis; Be followed successively by material overflow cavity 1-1 and feed cavity 1-2 near two chambers of stack shell conical section, material overflow cavity 1-1 offers elongated opening in the bottom and communicates with the rotary drum inner chamber, and feed cavity 1-2 offers at the top microscler discharging opening and communicates with the rotary drum inner chamber; Feed pipe 2 inserts in the feed cavity 1-2 along auger conveyor 1 axis, leaves radial clearance between feed pipe 2 and auger conveyor 1 inner chamber, during work; Feed pipe is motionless, the differential rotation in the same way of auger conveyor and drum 6, and material is got in the feed cavity 1-2 by feed pipe 2; Discharging opening by feed cavity 1-2 top gets into rotary drum 6; Because leave radial clearance between feed pipe 2 and auger conveyor 1 inner chamber, partial material gap location thus oppositely overflows into material overflow cavity 1-1, by the opening entering rotary drum 6 of material overflow cavity 1-1 bottom.
In Fig. 3～6, transition conduit 3 of configuration in feed cavity 1-2, transition conduit 3 axis and auger conveyor 1 dead in line; Transition conduit 3 feed ends have ring flange 4; Ring flange 4 cards are close to the feed end end wall 1-4 of feed cavity 1-2, both welded and installed, and feed pipe 2 stretches in transition conduit 3 feed ends; And leave radial clearance between the transition conduit 3
Speeding-up blade stretches out outside transition conduit 3 discharge ends, near feed cavity bottom end wall 1-5 for 5 one sections; Gap between the root of blade section of stretching out forms the charging aperture 5-1 of 4 speeding-up blades; Charging aperture 5-1 area sum is beneficial to material and flows out greater than the cross-sectional area of transition conduit 3 inner chambers.
Material gets into the ring flange end of transition conduit 3 from feed pipe 2, and the speeding-up blade charging aperture 5-1 on blade end flows out, gets into the space between the speeding-up blade 5.Because ring flange 4 is fixed together with auger conveyor 1, so this fluid accelerating structure has identical rotating speed with auger conveyor 1, after material quickens through speeding-up blade 5, and its rotating speed at blade 5 tops is approaching auger conveyor 1 rotating speed.The no longer continuous original laminar condition of destruction of fluid that flow out from auger conveyor 1 this moment, and but incorporate one with the laminar flow structure rapidly and rotate, the solid slag blanket on while rotary drum 6 walls also is not affected, centrifuge separating effect will be better.
Claims (4)
1. the fluid accelerating structure of a horizontal screw centrifuge, said horizontal screw centrifuge comprises the long tubular auger conveyor (1) of landscape configuration, and the one of which end is a conical section, and an end is a cylindrical section,
On the cylindrical section of auger conveyor (1); Dispose some dividing plates perpendicular to axis; The cylindrical section inner chamber is divided into the multistage separate chamber, is followed successively by material overflow cavity (1-1) and feed cavity (1-2) near two chambers of stack shell conical section, material overflow cavity (1-1) bottom is offered elongated opening and is communicated with the rotary drum inner chamber; Feed cavity (1-2) top is offered microscler discharging opening and is communicated with the rotary drum inner chamber
Feed pipe (2) inserts in the feed cavity (1-2) along auger conveyor (1) axis, leaves radial clearance between feed pipe (2) and auger conveyor (1) inner chamber,
It is characterized in that:
A configuration transition conduit (3) in feed cavity (1-2), transition conduit (3) axis and auger conveyor (1) dead in line,
Transition conduit (3) feed end has ring flange (4), and ring flange (4) card is close to the feed end end wall (1-4) of feed cavity (1-2), both fixed installations, and feed pipe (2) stretches in transition conduit (3) feed end, and leaves radial clearance between the transition conduit (3),
Transition conduit (3) discharge end has a circle speeding-up blade (5); Speeding-up blade (5) is circumferentially evenly arranged along transition conduit (3); The intersection of speeding-up blade (5) blade face root and transition conduit (3) outer circumference surface and transition conduit (3) parallel axes, the top, blade face is near the annular sidewall of feed cavity (1-2)
On the longitudinal cross-section perpendicular to transition conduit (3) axis, speeding-up blade (5) is serpentine, top, blade face and root inverse bending,
Speeding-up blade stretches out outside transition conduit (3) discharge end, near feed cavity bottom end wall (1-5) for (5) one sections; Gap between the root of blade section of stretching out forms the charging aperture (5-1) of speeding-up blade; Charging aperture (5-1) quantity equals blade quantity, and charging aperture (5-1) area sum is greater than the cross-sectional area of transition conduit (3) inner chamber.
2. the fluid accelerating structure of horizontal screw centrifuge according to claim 1, it is characterized in that: the quantity of said speeding-up blade (5) is 3～5.
3. the fluid accelerating structure of horizontal screw centrifuge according to claim 2, it is characterized in that: the quantity of said speeding-up blade (5) is 4.
4. the fluid accelerating structure of horizontal screw centrifuge according to claim 1 is characterized in that: bolt between said ring flange (4) and the feed end end wall (1-4), welding is fixing or pin is fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201684170U CN202173999U (en) | 2011-05-24 | 2011-05-24 | Fluid acceleration structure for horizontal decanter centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201684170U CN202173999U (en) | 2011-05-24 | 2011-05-24 | Fluid acceleration structure for horizontal decanter centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202173999U true CN202173999U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201684170U Expired - Lifetime CN202173999U (en) | 2011-05-24 | 2011-05-24 | Fluid acceleration structure for horizontal decanter centrifuge |
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| Country | Link |
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| CN (1) | CN202173999U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801432A (en) * | 2015-05-05 | 2015-07-29 | 李静 | Fluid acceleration turbine of centrifugal oil filter |
| CN106493002A (en) * | 2016-10-28 | 2017-03-15 | 中国石油大学(华东) | A kind of drilling mud purification Novel centrifuge |
| CN108176520A (en) * | 2017-12-25 | 2018-06-19 | 江苏巨能机械有限公司 | Three-phase disc separator |
| CN109499783A (en) * | 2018-12-30 | 2019-03-22 | 浙江工业大学 | A kind of preposition spiral flow-guiding device for decanter centrifuge anti-cavitation |
| CN110328059A (en) * | 2019-05-17 | 2019-10-15 | 常州大学 | A kind of pre-separation inner cylinder for decanter centrifuge |
| CN110586343A (en) * | 2019-08-30 | 2019-12-20 | 浙江工业大学 | Horizontal screw centrifuge |
-
2011
- 2011-05-24 CN CN2011201684170U patent/CN202173999U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801432A (en) * | 2015-05-05 | 2015-07-29 | 李静 | Fluid acceleration turbine of centrifugal oil filter |
| CN106493002A (en) * | 2016-10-28 | 2017-03-15 | 中国石油大学(华东) | A kind of drilling mud purification Novel centrifuge |
| CN108176520A (en) * | 2017-12-25 | 2018-06-19 | 江苏巨能机械有限公司 | Three-phase disc separator |
| CN109499783A (en) * | 2018-12-30 | 2019-03-22 | 浙江工业大学 | A kind of preposition spiral flow-guiding device for decanter centrifuge anti-cavitation |
| CN109499783B (en) * | 2018-12-30 | 2024-06-11 | 浙江工业大学 | Front spiral flow guiding device for cavitation resistance of horizontal spiral centrifugal machine |
| CN110328059A (en) * | 2019-05-17 | 2019-10-15 | 常州大学 | A kind of pre-separation inner cylinder for decanter centrifuge |
| CN110328059B (en) * | 2019-05-17 | 2021-07-06 | 常州大学 | Pre-separation inner barrel for horizontal screw centrifuge |
| CN110586343A (en) * | 2019-08-30 | 2019-12-20 | 浙江工业大学 | Horizontal screw centrifuge |
| CN110586343B (en) * | 2019-08-30 | 2024-05-03 | 浙江工业大学 | Horizontal screw centrifuge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |
|
| CX01 | Expiry of patent term |