CN201287081Y

CN201287081Y - Horizontal helix discharging sedimentation centrifuge using helix stock pusher

Info

Publication number: CN201287081Y
Application number: CNU2008201509911U
Authority: CN
Inventors: 王亚洲
Original assignee: SHANGHAI WESTERN EQUIPMENT CO Ltd
Current assignee: SUZHOU RUIWEI CENTRIFUGAL SEPARATION TECHNOLOGY CO., LTD.
Priority date: 2008-07-18
Filing date: 2008-07-18
Publication date: 2009-08-12
Anticipated expiration: 2018-07-18

Abstract

The utility model provides a horizontal scroll discharge sedimentary centrifuge which adopts a spiral propeller. The discharge sedimentary centrifuge mainly comprises a rotary drum, a tri-cone angel spiral pusher and a differential gear. The conical arid region adopts a tri-cone angle structure, that is, a first cone angle is a big cone angle at an angle ranging from 25 degrees to 30 degrees, a second cone angle is a buffer angle at an angle ranging from 8 degrees to 12 degrees, and a third cone angle (Alpha 3) is a slag-removing angle at an angle larger than 0 degree and 5 degrees. The utility model has the advantages of obtaining arider settled slag without blocking materials and reducing the time for keeping the liquid phase in the rotary drum; since the reasonable coordination of three balancing motion blocks can be adopted, the deflection deformation can be modified to enable the operation of the spiral propeller to be more stable; and meanwhile, the deflection superposition caused by the plastic deformation of the spiral propeller under the action of long-term deflection can be avoided, so that the long-term stability of the centrifuge is ensured.

Description

A kind of horizontal spiral discharge sedimentation centrifuge that adopts screw feeder

Technical field

The utility model relates to the feed separation centrifuge, especially a kind of horizontal spiral discharge sedimentation centrifuge that adopts screw feeder.

Background technology

Efficient horizontal screw machine in traditional centrifuge mainly is made up of rotary drum, screw feeder and differential mechanism, rotary drum is by main driven by motor, screw feeder is driven by differential mechanism by auxiliary-motor, main motor and auxiliary-motor all adopt the mode of common bus to control by frequency converter, can realize that energy is shared and in time, effectively adjust speed discrepancy, guarantee the separating effect of centrifuge.In the rotary drum of rotation screw feeder is housed at a high speed, its direction of rotation is identical with rotary drum, but produce certain speed difference by differential mechanism between the two, material from feed pipe enter in the body, under action of centrifugal force, the suspension solid phase is deposited in drum inner wall, deliver to the section of the pushing away dry section of rotary drum small end by screw feeder, solid phase is discharged from cinder notch, and clarification back liquid phase flows out from the big end overfall of rotary drum.There is following shortcoming in traditional centrifuge: 1. the cone angle that adopts at awl section dry section is single or double tapered angle, its shortcoming is the contradiction of be difficult for coordinating the essential resistance and the excessive easy putty of resistance of mummification sediment and causing mechanical breakdown, and easily causes the excessive and generation fault of mechanical load; 2. on the helical blade of screw feeder front and back position, fixedly install two balance motion blocks, because the whole pole length of screw feeder is big, the amount of deflection stack that has caused screw feeder under the amount of deflection effect, plastic deformation to take place for a long time and produced, the long-time stability of shortening screw feeder work; 3. the viscous flow time of liquid phase in rotary drum long, the treatment fluid that obtains clarification degree is undesirable.

Summary of the invention

At the weak point that traditional centrifuge exists, the utility model provides a kind of horizontal spiral discharge sedimentation centrifuge that adopts screw feeder.The utility model can obtain more dried sediment and putty not, and the treatment fluid that obtains is more clear, and the life-span of screw feeder is longer, has guaranteed the long-time stability of screw feeder work.

For achieving the above object, the utility model adopts following technical scheme:

The horizontal spiral discharge sedimentation centrifuge of the employing screw feeder that the utility model provides, mainly comprise rotary drum, screw feeder and differential mechanism are formed, rotary drum is by main driven by motor, screw feeder is driven by differential mechanism by auxiliary-motor, screw feeder places in the rotary drum of rotation at a high speed, its direction of rotation is identical with rotary drum, but produce certain speed difference by differential mechanism between the two, suspension enters in the body from feed pipe, under action of centrifugal force, the suspension solid phase is deposited in drum inner wall, deliver to the section of the pushing away dry section of rotary drum small end by screw feeder, discharge from the solid phase slag notch, the liquid phase after the clarification flows out from the big end overfall of rotary drum, described awl section dry section adopts the third hand tap corner structure: the first awl angle is big cone angle, angular range is between 25 ° to 30 °, and the third hand tap angle is the buffering angle, and angular range is between 8 ° to 12 °, third hand tap angle (α 3) is the deslagging angle, and angle is greater than 0 ° and greater than 5 °.

On the helical blade of screw feeder, the arbitrary position being symmetrical in the screw feeder shaft centerline offers pod apertures.

On the helical blade of screw feeder, it is moving fast to add a balance at the medium position of screw feeder, and it is moving fast to be fixed with three balances on the described helical blade altogether.

Owing to adopted technique scheme, usefulness of the present utility model is:

Because centrifuge has used essential resistance and the excessive easy putty of resistance of fully having coordinated the mummification sediment behind the screw feeder of third hand tap corner structure, the contradiction that causes mechanical breakdown, can obtain more dried sediment and putty not; The use of liquid machine pod apertures makes liquid phase can reduce time of staying at rotary drum, and the space of rotary drum is utilized effectively, and has reduced the burden of helical blade, has prolonged the service life of screw feeder; Rationally coordinating of three balance motion blocks can be revised deflection deformation and then make screw feeder work more steady, the amount of deflection of avoiding screw feeder under the amount of deflection effect plastic deformation to take place for a long time simultaneously and producing superposes, and can guarantee the long-time stability of centrifuge work.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is another structural representation of the present utility model.

1-rotary drum, 2-three cone angle screw feeders, 3-differential mechanism, 4-feed pipe, 5-slag notch, 6-overfall, 7-dry section, 8-pod apertures, 9-overflow plate, 11-balance motion block 1,12-balance motion block 2,13-balance motion block 3,21-helical blade, the big cone angle of 71-, 72-cushion angle, 73-deslagging angle in the drawings

The specific embodiment

Below in conjunction with drawings and Examples explanation the utility model.

As shown in Figure 1; Material enters the distributor chamber of three cone angle screw feeders 2 by feed pipe 4, is quickened stably at this material, and the outlet by three cone angle screw feeders 2 enters rotary drum 1.In rotary drum 1, carry out the separation of material, rotary drum 1 rotates under the drive of rotary drum 1 with the rotating speed rotation mixed liquor of setting according to separation requirement, form a concentric liquid layer along rotary drum 1 housing, the solid that density is bigger in the mixed liquor in the action of centrifugal force deposit on rotary drum 1 inwall; The 2 asynchronous in the same way rotations of three cone angle screw feeders with rotary drum 1, the solid of separating is pushed awl section dry section 7 vertically to, awl section dry section 7 has certain cone angle, what the utility model adopted is three cone angles, first cone angle 71 is big cone angle, angular range is between 25 ° to 30 °, play the effect that increases the sediment resistance, this power-assisted can drain sediment inside and be regardless of, obtain containing the sediment that liquid will be lower: second cone angle 72 is the buffering angle, and angular range is avoided the excessive putty that causes of deslagging resistance between 8 ° to 12 °, or the deslagging load is excessive, causes mechanical breakdown; Third hand tap angle 73 is the deslagging angle, angle greater than 0 ° less than 5 °, discharge smoothly under action of centrifugal force for making sediment, should be advisable very for a short time in the deslagging angle.Three cone angle centrifuge spirals fully coordinated the mummification sediment essential resistance and the excessive easy putty of resistance, cause the contradiction of mechanical breakdown.After horizontal screw machine uses three cone angle screw feeders 2, can obtain than the more dried sediment of conventional horizontal screw machine and putty not, can not cause mechanical load excessive and produce fault.Solid can be realized by changing poor rotating speed in the time of boring 7 stops of section dry section, and the length of time is the important factor that the decision solid contains wet device, and the solid that is deposited on rotary drum 1 inwall is shifted onto 5 discharges of rotary drum 1 solid phase slag notch by screw feeder 2.

In the arbitrary position that is symmetrical in three cone angle screw feeders, 2 shaft centerlines, offer phase pod apertures 8 clearly, under action of centrifugal force on the helical blade, suspension is layering, the bosom layer is the liquid phase layer, and the setting of liquid phase pod apertures 8 can make liquid phase flow out horizontal screw machine in the shortest time.Heavier county's supernatant liquid then has the long time of staying, the liquid of clarification is because the proportion reduction, when being pressed against the center, then along outside the clear phase pod apertures 8 outflow machines, the use of liquid phase pod apertures 8 makes the use of liquid phase pod apertures 8 make liquid phase can reduce time of staying at rotary drum, the space of rotary drum is utilized effectively, reduced the burden of helical blade 21, reduced strength failure to helical blade 21, reduce the disturbance of liquid phase simultaneously to sediment, significantly improve separating effect, the treatment fluid that can more be clarified.And flow to the overflow plate 9 of rotary drum 1 after the liquid clarification, and flowing out through overfall 6, overflow plate 9 has determined the liquid layer degree of depth, and the liquid layer degree of depth is big more, and the liquid phase clarification is high more, and the liquid of clarification is discharged by gravity, according to the requirement of feed separation, can select suitable overflow plate 9.

As shown in Figure 2: three cone angle screw feeders 2 are fixedlyed connected with helical blade 21, medium position at three cone angle spiral propellers 2 is provided with a balance motion block 12, being fixed with moving fast 11,12,13, the three cone angle screw feeders 2 of three balances on the described helical blade 21 altogether is to do two-sided dynamic balancing between 1500-2000 rev/min.The utility model is after finishing the two-sided dynamic balancing of low speed accurately, under the working speed of helical rotor, do the 3rd dynamic balancing, can revise the deflection deformation that causes owing to mass eccentricity like this and then make 2 work of three cone angle screw feeders more smooth, avoid the 2 long-term amount of deflection stacks that under the amount of deflection effect, plastic deformation take place and produce of three cone angle screw feeders simultaneously, can guarantee the long-time stability of three cone angle screw feeders, 2 work.

Claims

1. horizontal spiral discharge sedimentation centrifuge that adopts screw feeder, mainly comprise rotary drum, three cone angle screw feeder and differential mechanisms, it is characterized in that: the structure of described three cone angle screw feeders is that the first awl angle is big cone angle, angular range is between 25 ° to 30 °, second cone angle is the buffering angle, angular range is between 8 ° to 12 °, and third hand tap angle (α 3) are the deslagging angle, and angle is greater than 0 ° and greater than 5 °.

2. the horizontal spiral discharge sedimentation centrifuge of employing screw feeder as claimed in claim 1 is characterized in that: the helical blade at three cone angle spiral propellers middle part is provided with one group three and is the balance motion block.