CN2700323Y - High dryness sludge dewatering horizontal spiral centrifuge for converter sludge treatment system of steel plant - Google Patents

High dryness sludge dewatering horizontal spiral centrifuge for converter sludge treatment system of steel plant Download PDF

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Publication number
CN2700323Y
CN2700323Y CN 200420033664 CN200420033664U CN2700323Y CN 2700323 Y CN2700323 Y CN 2700323Y CN 200420033664 CN200420033664 CN 200420033664 CN 200420033664 U CN200420033664 U CN 200420033664U CN 2700323 Y CN2700323 Y CN 2700323Y
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China
Prior art keywords
rotary drum
centrifuge
spiral
sludge dewatering
horizontal screw
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Expired - Fee Related
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CN 200420033664
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Chinese (zh)
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齐伯奎
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SHANGHAI HANENG ENVIRONMENTAL PROTECTION ENERGY-SAVING ENGINEERING Co Ltd
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Individual
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Abstract

The utility model relates to a high dryness sludge dewatering horizontal spiral centrifuge for the converter sludge treatment system of a steel plant, comprising a bottom frame, a rotating drum, a spiral, a feeding device, a differential mechanism, etc. In the utility model, a screw pitch is reasonably enlarged to 86 mm-360 mm, and a length-diameter ratio is designed within a range of 4-4.3; therefore, throughput is greatly improved, and the dry time of solid dregs in the centrifuge is ensured for achieving good effect of solid phase separation. Furthermore, a hydraulic differential mechanism whose torque is 5000 N.m-20000 N.m is used for a more stable and reliable whole system. A drawknife device is arranged on the position closing to a dreg discharging opening for ensuring that the solid phase collecting chamber of the centrifuge is expedite. Through the improvement of the structure of the existing horizontal spiral centrifuge, the utility model can completely adapt the special treatment of the converter sludge of the steel plant for achieving prescribed separating effect.

Description

The high mass dryness fraction sludge dewatering horizontal screw centrifuge that is used for steel mill's converter mud treatment system
Technical field
The utility model belongs to the environmental protection treatment equipment technical field, is specifically related to a kind of high mass dryness fraction sludge dewatering horizontal screw centrifuge that is used for steel mill's converter mud treatment system.
Background technology
Sludge dewatering (thickening one) processing is the important step in city domestic sewage, water factory's spoil disposal water, the industrial and agricultural wastewater treatment project, but because the mud in the converter mud system of steel mill has himself singularity: than great, viscosity is high, abradability is strong, the fluctuation of concentration scope is big, be difficult to separate, generic centrifuge is difficult to effectively work under this kind operating mode, reach the separating effect of regulation, thereby cause the separating device in the converter mud system of current domestic steel mill, form the situation that is ruled all the land by plate-and-frame filter press.And there are problems in the use of plate-and-frame filter press: the one, and easy network blocking influences processing efficiency; The 2nd, and structure is open type, can produce secondary pollution in the treating processes; The 3rd, need a large amount of flocculation agent and water for cleaning, day-to-day operation expense height of using; The 4th, structure is huge, and floor space is bigger; The 5th, level of automation is low, needs labor management.Therefore, the researchist is seeking better equipment always and is replacing plate-and-frame filter press.If not from concrete application industry angle, and analyze from this technical field angle of thickening equipment, horizontal screw centrifuge also is a kind of equipment that is widely used in the dewatering technology of mud, but it mainly is to be used for city domestic sewage, water factory's spoil disposal water, industrial and agricultural wastewater treatment project.So the researchist of steel industry is just attempting horizontal screw centrifuge is used in steel mill's converter mud treatment process always, but, do not improve horizontal screw centrifuge because being carried out rational structure, cause it to be difficult to adapt to particular requirement in steel mill's converter mud, problems such as treatment capacity is little, easy putty occur, therefore this trial is not succeeded always.
Summary of the invention
The purpose of this utility model is the problems referred to above at the prior art existence, a kind of high mass dryness fraction sludge dewatering horizontal screw centrifuge that is used for steel mill's converter mud treatment system is provided, by to of the improvement of existing horizontal screw centrifuge in configuration aspects such as pitch, make it can adapt to special processing to steel mill's converter mud, solve problems such as treatment capacity is little, easy putty, reach the separating effect of regulation.
Technical solution of the present utility model is as follows:
Be used for the high mass dryness fraction sludge dewatering horizontal screw centrifuge of steel mill's converter mud treatment system, its basic structure is identical with existing horizontal screw centrifuge structure.It has underframe, and rotary drum is installed on the underframe, and spiral is contained in the rotary drum, and feeding unit is arranged on the rotary drum front end, drives the differential mechanism and the hydraulic pressure fuel delivery device of rotary drum and screw rotation in addition.Wherein, the feed-pipe of feeding unit puts in the spiral, and the rotary drum front portion is a straight section, and there is the liquid phase outlet at the rear portion for awl section, straight section, and awl section end has slag notch.At existing horizontal screw centrifuge under the situation of same treatment discharge capacity, when being used for handling the mud of general life or industrial sewage, its pitch is set less, handle steel mill's converter mud and spiral can occur in the pusher process, because pitch is less, Gu thereby slag forms " bridge formation " easily between spiral two blades, cause the generation of problems such as whizzer putty.The pitch of horizontal screw centrifuge has also directly determined the treatment capacity of whizzer, so the design of pitch parameter is very crucial.One of improvement of this patent is to increase about 30% with the pitch between the spiral shell leaf on its spiral of existing horizontal screw centrifuge of discharge capacity, it promptly is the horizontal screw centrifuge of LW220-900 for current version, its pitch is set in 86mm-360mm, can satisfy the required treatment capacity of normal process like this, more can guarantee the unimpeded smoothly of whizzer deslagging.Simultaneously, owing to increased pitch, make solid slag shorten relatively in the whizzer dryer section time.Ratio with the effective working length of rotary drum and radius is that the length-to-diameter ratio design is in the 4-4.3 scope simultaneously, so not only can guarantee the time of drying of solid slag in whizzer, to reach good solid phase separating effect, also improved the clarifying effect of sedimentation simultaneously, guaranteed the clarity of clear liquid.
Further, differential mechanism adopts the hydraulic differential of high pulling torque, and moment of torsion is at 5000-20000Nm.The differential of this hydraulic differential changes according to actual loading, little differential, greatly turn round refuse, the automatic feedback regulation of differential, pusher power compensate automatically, make solid slag in machine, not only be subjected to centrifugal pressure, and in the two-way extruding of two spiral shell leaves of front end intercropping to guarantee the constant mass dryness fraction of solid slag, obtain more dried solid slag.Automatically recover initial differential after discharging solid slag, be difficult for the putty situation takes place, make whizzer not only guarantee separating effect, main is to have improved treatment capacity
At whizzer when handling steel mill's mud; because himself singularity of iron and steel mud: than great, viscosity is high; solid phase slowly accumulates in the solid phase collecting chamber easily in substantial sepn; and it is long-pending more thick more; finally cause solid phase to be full of cavity, cause the deslagging that whizzer can't be unimpeded and putty is shut down.Drum structure according to whizzer, we have designed doctor blade device, it is installed in centrifuge drum near near the slag notch, in centrifuge separation process, scraper rotates with rotary drum, can form one and scrape material space continuously, makes iron and steel mud just be removed by scraper after gathering at once, avoid it to be set in slag notch, the equipment that influences normally moves.
Advantage of the present utility model:
1, horizontal screw centrifuge is used for steel mill's converter mud treatment system, the plurality of advantages of having utilized horizontal screw centrifuge itself to be had, as sealing treatment, non-secondary pollution; Structure is simpler, occupies little space; Adopt oil motor, obtain high rotating speed, little differential, high rotating speed has very big centrifugal force, little differential can reduce the stirring of spiral to material, increase the dehydration residence time, thereby guarantee to handle the permanent mass dryness fraction of back mud cake, improve material dewatering and clarifying separating effect.
2, owing to the pitch with whizzer reasonably strengthens, improved the treatment capacity of whizzer greatly.The length-to-diameter ratio of appropriate design simultaneously can guarantee the time of drying of solid slag in whizzer, to reach good solid phase separating effect.
3, adopt the high pulling torque hydraulic differential, it is big to have a pusher moment of torsion, and under the equal volume, the pusher moment of torsion is big bigger 2~4 times than mechanical differential gear box, thereby makes total system become more reliable and more stable.
4, at slag notch design doctor blade device, guaranteed the unimpeded of whizzer solid phase collecting chamber, for huge effect has been played in whizzer steady running.
Because whizzer has the level of automation height, envrionment conditions is good, and the influence of separating effect human factor is little, convenient operating maintenance, plurality of advantages such as the day-to-day operation expense is little, and utility appliance is few, and floor space is little, and initial cost is few; Ours at steel industry converter mud system sludge characteristic and process characteristic special adaptations in addition, make it be more suitable under this operating mode, moving, at home and abroad widelyd popularize in the steel industry converter mud treatment process, and will progressively be replaced plate-and-frame filter press.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Referring to Fig. 1, the high mass dryness fraction sludge dewatering horizontal screw centrifuge that is used for steel mill's converter mud treatment system mainly by underframe 1, be installed in the whizzer body 2 on the underframe and form by several parts such as hydraulic efficiency system that hydraulic differential 3 and fuel delivery device 4 constitute.Whizzer body 1 comprises rotary drum 9, be installed in spiral 8 in the rotary drum 9, be arranged on the feeding unit 5 of rotary drum 9 front ends etc.The feed-pipe 6 of feeding unit puts in the spiral 8.Rotary drum 9 is divided into the awl section at forward straight section and rear portion.The front portion of straight section is divided into settling section a, is provided with liquid phase outlet 7, and the rear portion of straight section is divided into centrifugal compression zone b.The two-way crush zone c of awl Duan Zewei, the end of awl section is provided with slag notch 11.Centrifuge drum near slag notch 11 be attached with doctor blade device 10, with rotary drum 9 unitary rotation.At current version is the horizontal screw centrifuge of LW220-900, and A is set in 86mm-360mm with its pitch, and the length-to-diameter ratio of rotary drum is set in the 4-4.3 scope.Employed hydraulic differential 3 adopt little differential, greatly turn round refuse, the automatic feedback regulation of differential, pusher power compensate hydraulic differential automatically, moment of torsion is at 5000-20000Nm, fuel delivery device by big latus rectum high-pressure line 12 to the differential mechanism oil transportation.

Claims (3)

1, the high mass dryness fraction sludge dewatering horizontal screw centrifuge that is used for steel mill's converter mud treatment system, include the rotary drum of installing on underframe, the underframe, the differential mechanism that is contained in the spiral in the rotary drum, the feeding unit that is arranged on the rotary drum front end, drive rotary drum and screw rotation, the feed-pipe of described feeding unit puts in the spiral, the rotary drum front portion is a straight section, the rear portion is the awl section, straight section has the liquid phase outlet, and awl section end has slag notch; It is characterized in that: the pitch on the spiral between the spiral shell leaf is 86mm-360mm, and the effective working length of rotary drum is that length-to-diameter ratio is 4-4.3 with the ratio of radius.
2, high mass dryness fraction sludge dewatering horizontal screw centrifuge according to claim 1 is characterized in that: differential mechanism adopts the hydraulic differential of high pulling torque, and moment of torsion is at 5000-20000Nm.
3, high mass dryness fraction sludge dewatering horizontal screw centrifuge according to claim 1 is characterized in that: centrifuge drum is provided with doctor blade device in the position near slag notch.
CN 200420033664 2004-05-20 2004-05-20 High dryness sludge dewatering horizontal spiral centrifuge for converter sludge treatment system of steel plant Expired - Fee Related CN2700323Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420033664 CN2700323Y (en) 2004-05-20 2004-05-20 High dryness sludge dewatering horizontal spiral centrifuge for converter sludge treatment system of steel plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420033664 CN2700323Y (en) 2004-05-20 2004-05-20 High dryness sludge dewatering horizontal spiral centrifuge for converter sludge treatment system of steel plant

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CN2700323Y true CN2700323Y (en) 2005-05-18

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101607231B (en) * 2009-06-29 2011-05-11 杭州银星机械有限公司 Horizontal screw centrifuge
CN104030544A (en) * 2014-06-23 2014-09-10 饶宾期 Deep dehydrating method of sludge
CN104781066A (en) * 2012-09-20 2015-07-15 鲍尔管泵有限责任公司 Method for separating recommended crops from manure
CN105855069A (en) * 2016-04-07 2016-08-17 安徽普源分离机械制造有限公司 Drinking water sludge multistage efficient separation equipment
CN110451600A (en) * 2019-08-12 2019-11-15 刘坪坪 A kind of polysulfide rubber sewage treatment equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101607231B (en) * 2009-06-29 2011-05-11 杭州银星机械有限公司 Horizontal screw centrifuge
CN104781066A (en) * 2012-09-20 2015-07-15 鲍尔管泵有限责任公司 Method for separating recommended crops from manure
CN104030544A (en) * 2014-06-23 2014-09-10 饶宾期 Deep dehydrating method of sludge
CN104030544B (en) * 2014-06-23 2015-10-07 中国计量学院 Deep dehydration method for sludge
CN105855069A (en) * 2016-04-07 2016-08-17 安徽普源分离机械制造有限公司 Drinking water sludge multistage efficient separation equipment
CN110451600A (en) * 2019-08-12 2019-11-15 刘坪坪 A kind of polysulfide rubber sewage treatment equipment

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C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: SHANGHAI HANENG ENVIRONMENTAL PROTECTION AND ENERG

Free format text: FORMER OWNER: QI BOKUI

Effective date: 20110408

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 400039 7-3-2, CAIDIANYUAN, SOUTHERN GARDEN, HIGH-TECH. ZONE, CHONGQING TO: 201607 ROOM 11-2, NO. 3560, YEXIN HIGHWAY, MAOGANG TOWN, SONGJIANG DISTRICT, SHANGHAI

TR01 Transfer of patent right

Effective date of registration: 20110408

Address after: 201607 Shanghai Songjiang District City Maogang town Ye Xin Road No. 3560 room 11 -2

Patentee after: Shanghai Haneng Environmental Protection Energy-saving Engineering Co., Ltd.

Address before: 400039, Chongqing high tech Zone South Garden Choi Dian Park 7-3-2

Patentee before: Qi Bokui

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20050518

Termination date: 20120520