CN101653764B - Low-resistance and high-efficiency powder concentrator - Google Patents
Low-resistance and high-efficiency powder concentrator Download PDFInfo
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- CN101653764B CN101653764B CN 200910144966 CN200910144966A CN101653764B CN 101653764 B CN101653764 B CN 101653764B CN 200910144966 CN200910144966 CN 200910144966 CN 200910144966 A CN200910144966 A CN 200910144966A CN 101653764 B CN101653764 B CN 101653764B
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Abstract
The invention discloses a low-resistance and high-efficient powder concentrator which is a novel low-resistance and high-efficiency powder concentrator that is formed by scientifically combining two classification mechanisms together according to vortex classification and inertia centrifugal classification principles on the basis of comprehensively absorbing a classification principle of a third-generation high-efficient powder concentrator in the world and further carrying out improvement and development. The invention has high powder-concentration efficiency, reliable rotor seal, simple structure, small device size, light weight and flexible arrangement, can improve the yield of a mill by a large margin, does not need large-size castings or machining and is convenient for mounting and maintaining.
Description
Technical field:
The present invention relates to the plant equipment field, is a kind of low-resistance and high-efficiency powder concentrator specifically, is the bulk material classifying equipoment of the industries such as building material cement industry, chemical industry, metallurgy industry, power industry, nonmetallic ore.
Background technology:
The further raising that cement performance is required along with the full-fledged and building trade of new dry cement production technology, cement closed cycle grinding system is more favored by cement production enterprise, powder concentrator is as one of main frame of cement closed circuit circulatory system, the quality of powder concentrator performance has larger impact to the cement closed circuit circulatory system, and it selects the powder result directly to affect cement performance.At present, what China's powder concentrator use was maximum is third generation O-SEPA type or imitative O-SEPA type high-efficient powder concentrator, and mainly there is following drawback in the powder concentrator of this pattern of domestic application:
(1), the top scrobicular ring is adopted in sealing between the sound parts, the labyrinth seal pattern that the bottom bulge loop forms, sealing structural requirement wear resistant cast iron spare or wear-resistant cast steel parts hot investment casting, one-shot forming, do not need machining, domestic at us, because casting accuracy does not reach requirement, hermetically-sealed construction can not one-shot forming, wear resistant cast iron spare or wear-resistant cast steel parts hardness are higher, be difficult to the machining moulding, cause domestic powder concentrator manufacturer's usefulness plain cast iron spare or steel-casting to make the sealing ring, do a little wear Protections at hermetically-sealed construction again, significantly reduce through transformed hermetically-sealed construction anti-wear performance, normal operation just needed to change the once sealing structural member in 2 years, be subjected to the powder concentrator structural limitations, change seal member all needs the powder concentrator bottom shell at every turn, axle system and rotor remove and install, and waste time and energy.
(2), the guide vane that adopts of domestic powder concentrator is Plan view pattern, weld with the volute body according to 15 °～40 ° of angle of inclination and horizontal sextant angles.Because the air velocity between guide vane is low than graded region, bulk material makes a part of material run out of between guide vane in the effect of centrifugal force easily, is deposited on the base plate of air intake passage, has reduced the grinding efficiency of powder concentrator.Because the outer of bulk material altered, it is disorderly that air velocity distribution is produced, vibrative possibility when having increased the powder concentrator running.In addition, along with the maximization of equipment, the powder concentrator ventilation is increasing, and the height of powder concentrator master separating chamber is more and more higher, makes guide vane more and more longer, for guaranteeing the rigidity of guide vane, has to increase the thickness of guide vane.But in order to guarantee the draught area between guide vane, the impossible unconfined increase of its thickness causes the rear guide vane rigidity variation of powder concentrator maximization, be subjected to the percussion of air-flow, guide vane easily produces vibration deformation, and jitter appears in the blade middle part, affects the stable of classification flow field.
(3), the powder concentrator of the more powder concentrator of domestic application restricts by frame for movement, selects the powder charging aperture quantity can not unconfined increase, limited charging aperture quantity causes the powder concentrator spreading inhomogeneous, makes grinding efficiency not high.The larger this phenomenon of the specification of powder concentrator is more serious, and the large rotor diameter increases in addition, and running speed reduces, and grinding efficiency increases with the powder concentrator specification and reduces.The powder concentrator tertiary air air-intake device design of tradition O-Separ type is on powder concentrator bottom meal collection ash cone, in the same level face, vertical meal collection ash blanking ash bucket bus, vary in size according to the powder concentrator specification, along annular the pipe that 3～4 diameters are respectively Φ 200～Φ 400 is set evenly.The project organization of this tertiary air air-intake device of powder concentrator, after system fan is opened, because the vertical meal collection ash of tertiary air air-intake device cone generatrices, the tertiary air wind direction that enters from airduct is also perpendicular to meal collection ash cone generatrices, cause tertiary air on the cone section, the sorting of the calm participation meal of airduct periphery, there is the sorting dead band, because the top material is evenly to fall along the cone wall, the existence in the inhomogeneous and sorting dead band of air intake, the sorting that the material that top is fallen produces is local sorting, and limited air quantity drawn game is partly selected, and is difficult to produce obvious separating effect.
(4), powder concentrator O-SEPA type or the main air inlet of imitative O-SEPA type arrange two main air inlets, one time the air inlet intake generally accounts for 60% of air intake total amount, the secondary air inlet intake accounts for 30% of air intake total amount, enter the wind of air inlet along powder concentrator volute body, under the guiding of guide vane, enter main powder-separating area, because air-flow range ability in powder concentrator volute body is longer, the air intake resistance is larger, equipment resistance is also larger, the power of fan that powder concentrator disposes later is corresponding increase also, energy consumption is high, is unfavorable for energy-conservation.
Summary of the invention:
The object of the invention is to overcome and discuss the deficiency that traditional powder concentrator in use exists and a kind of low-resistance and high-efficiency powder concentrator is provided.A kind ofly will scientifically combine based on two kinds of classification mechanisms of vortex classification, inertial centrifugal classification principle comprehensively having absorbed in the world on the basis of third generation high-efficient powder concentrator classification principle, through further improving the novel low-resistance and high-efficiency powder concentrator of development.
The objective of the invention is to realize by following technical solution:
A kind of low-resistance and high-efficiency powder concentrator: have a volute body, the whirlpool hull outside is provided with four air inlets, volute body lower end is equipped with the housing supporting leg, in the volute body rotor assembly is installed, be provided with hermetically-sealed construction between rotor assembly and the volute body, some guide vanes also are installed in the volute body according to certain rules, volute body below is equipped with the tertiary air air-intake device, volute body top is connected with discharge pipe, volute body top is equipped with overarm brace, and the overarm brace top also is equipped with the decelerating through motor machine support, and motor and reductor are installed on the decelerating through motor machine support, the output shaft of reductor is connected to main shaft, and main shaft passes discharge pipe and is connected to rotor assembly.
Described hermetically-sealed construction, comprise rotor top plate, rotor top plate upper surface inward flange is installed by welding with the rotor pipe nipple, rotor pipe nipple inboard is pasted with industrial wear resistant ceramic chip, on the rotor pipe nipple outer circumference of rotor top plate upper surface some rectangular box are installed also, the rectangular box lateral surface is welded with the wear Protection steel plate, be welded with nut in the rectangular box, be bolted between rectangular box and rotor top plate, the rectangular box upper surface is installed by welding with some sealing short blades and sealing linear leaf according to certain rule, and sealing linear leaf and rotor pipe nipple are welded to connect; There is the sealing ring flat-plate top of sealing short blade and sealing linear leaf, sealing ring flat-plate top is the upper shell cover plate, be bolted between sealing ring flat-plate and upper shell cover plate, upper shell cover plate lower surface, the sealing ring flat-plate outside also is installed by welding with fixedly ring flat-plate of sealing, upper shell cover plate inward flange is installed by welding with chimney fan, between chimney fan and rotor pipe nipple certain interval is arranged, the chimney fan bottom deeply goes out certain distance in the rotor pipe nipple, chimney fan madial wall lower end is installed by welding with the angle steel ring, between angle steel ring inwall and rotor pipe nipple are radial and axial certain interval is arranged all, angle steel ring inwall is pasted with industrial wear resistant ceramic chip.
Described rotor pipe nipple is the cylinder that a metallic plate is made, and its cylinder outer wall and chimney fan inwall spacing are at 3-20mm, and rotor pipe nipple top is deep into apart from 10-60mm place, chimney fan bottom; The distance that 3-20mm is all arranged between angle steel ring inwall and rotor pipe nipple are radial and axial.
Described sealing ring flat-plate bottom surface is 3-20mm with the sealing short blade with the distance that seals the illusion plane that end face forms on the linear leaf, be connected with the hold-down screw bolt by jacking screw between sealing ring flat-plate and upper shell cover plate, jacking screw and hold-down screw evenly split along the circle spacing, and space, regulate hold-down screw adjustable sealing ring flat-plate height, jacking screw is used for the top tight sealing ring flat-plate fixes it.
Described guide vane is characterized in that: guide vane is the other shaped thin plate, and there is the bending angle at the middle part, and the guide vane windward side forms an inside curved surface towards interior bending; Guide vane top and bottom all have several bolts hole, described bending angle, and bending angle is 5 °～40 °.
Described tertiary air air-intake device, comprise meal collection ash cone, it is characterized in that: meal collection ash cone is divided into the main powder-separating area coupling housing of interconnective tertiary air air-intake device top and the short cylinder joint of tertiary air air-intake device below, the meal ash bucket, main powder-separating area coupling housing and meal ash bucket are funnel type, and all be equipped with some perpendicular to the blocking material ring of meal collection ash pyramidal tract to bus on both internal height directions from top to bottom, main powder-separating area coupling housing upper end is welded with connecting flange, main powder-separating area coupling housing lower end is connected with tertiary air air-intake device upper surface bolt, the upper end welding of tertiary air air-intake device lower surface and short cylinder joint, the outside, lower end of short cylinder joint is welded with cylinder flange, and meal ash bucket upper end is connected with the cylinder flange bolt; Described tertiary air air-intake device, has collar plate shape volute body, the volute plate of perforate in the middle of bottom surface is on the volute body, the whirlpool hull outside has two air inlets that are symmetric along the volute center line, the air inlet inlet end is equipped with the tertiary air orifice adpting flange, at the tertiary air guide vane that certain angle is installed along even circumferential between the bottom surface on the volute body, guide vane welds respectively with volute plate up and down in the volute plate perforate outside up and down.
The tertiary air guide vane of described certain angle, the rule that its angle is followed is: the guide vane on horizontal center line according to the horizontal center line angle be 40 °～80 °, all the other guide vanes, take this guide vane as benchmark, adjacent guide vane angle is 6 °～20 °.
Advantage of the present invention:
1, grinding efficiency is high, than high ten percentage points of third generation powder concentrators, can reach more than 80%.
2, can increase substantially mill output.Compare with the open circuit mill, mill output improves 40～100%; Compare with the closed circuit mill of tradition, can improve output (with centrifugal, cyclone type ratio) 15～40%.
3, the grinding system power consumption reduces, and can economize on electricity 10～20%.
4, equipment resistance reduces, and traditional powder concentrator resistance is below 2500Pa, and the present device resistance is in 2000Pa.
5, improve finished particle and distribute, improve the quality of products.Cement granules has improved 3～30 μ m granule contents in distributing, and improves strength of cement; Reduce the content of 200 μ m particles during raw meal particulate distributes, improved the burn-ability of raw material.
6, the product fineness adjustable range is wide, and control is simple, changes fineness and need not shut down, and only can produce specific area by the rotating speed that changes powder concentrator is various cement and various granular material between 300～600m2/kg.
7, rotor seal is reliable and simple in structure, does not need heavy castings and machined, and installation and maintenance are convenient.
8, equipment volume is little, and is lightweight, flexible arrangement.
9, system adopts full negative-pressure operation, has stopped dust pollution, improves production environment, realizes carrying out production strictly in line with rules and regulations.
10, owing to can utilize a large amount of cold airs as selecting powder gas, the finished cement temperature is low.
Description of drawings:
Fig. 1 is side view of the present invention;
Fig. 2 is Fig. 1 facade view;
Fig. 3 is the A-A cutaway view among Fig. 2;
Fig. 4 is Fig. 2 local I enlarged drawing;
Fig. 5 is tertiary air air inlet structure top view;
Fig. 6 is single directing vane topology view.
Wherein, motor 1 in the diagram; Reductor 2; Decelerating through motor machine support 3; Overarm brace 4; Discharge pipe 5, the inner potsherd of pasting protects; Four air intake volute bodies 6, wear Protection is done in inside; Housing supporting leg 7; Tertiary air air-intake device 8; Meal ash bucket 9; Principle axis shafting 10; Sealing gland import 11; Charging aperture 12, inner wear Protection; Counterattack coil component 13, wear-resistant cast steel parts; Guide vane 14, wear-resisting steel plate; Rotor part 15; Axle is steady brace 16, the protection of outside ceramic ring; Step flowline 17, the protection of outside ceramic ring; Eddy current is broken up blade 18, and horizontally disposed even distribution is welded with the rotor seal ring flat-plate; Seal angle steel ring 19; Tertiary air air-intake device guide vane 20, tertiary air orifice volute body 21.
The specific embodiment:
Referring to Fig. 1-4.
A kind of low-resistance and high-efficiency powder concentrator: have a volute body 6, volute body 6 arranged outside have four air inlets, volute body lower end is equipped with the housing supporting leg, in the volute body rotor assembly is installed, be provided with hermetically-sealed construction between rotor assembly and the volute body, some guide vanes also are installed in the volute body according to certain rules, volute body below is equipped with the tertiary air air-intake device, volute body top is connected with discharge pipe, volute body top is equipped with overarm brace, and the overarm brace top also is equipped with the decelerating through motor machine support, and motor and reductor are installed on the decelerating through motor machine support, the output shaft of reductor is connected to main shaft, and main shaft passes discharge pipe and is connected to rotor assembly.
Described hermetically-sealed construction, comprise rotor top plate, rotor top plate upper surface inward flange is installed by welding with the rotor pipe nipple, rotor pipe nipple inboard is pasted with industrial wear resistant ceramic chip, on the rotor pipe nipple outer circumference of rotor top plate upper surface some rectangular box are installed also, the rectangular box lateral surface is welded with the wear Protection steel plate, be welded with nut in the rectangular box, be bolted between rectangular box and rotor top plate, the rectangular box upper surface is installed by welding with some sealing short blades and sealing linear leaf according to certain rule, and sealing linear leaf and rotor pipe nipple are welded to connect; There is the sealing ring flat-plate top of sealing short blade and sealing linear leaf, sealing ring flat-plate top is the upper shell cover plate, be bolted between sealing ring flat-plate and upper shell cover plate, upper shell cover plate lower surface, the sealing ring flat-plate outside also is installed by welding with fixedly ring flat-plate of sealing, upper shell cover plate inward flange is installed by welding with chimney fan, between chimney fan and rotor pipe nipple certain interval is arranged, the chimney fan bottom deeply goes out certain distance in the rotor pipe nipple, chimney fan madial wall lower end is installed by welding with the angle steel ring, between angle steel ring inwall and rotor pipe nipple are radial and axial certain interval is arranged all, angle steel ring inwall is pasted with industrial wear resistant ceramic chip.
Described rotor pipe nipple is the cylinder that a metallic plate is made, and its cylinder outer wall and chimney fan inwall spacing are at 3-20mm, and rotor pipe nipple top is deep into apart from 10-60mm place, chimney fan bottom; The distance that 3-20mm is all arranged between angle steel ring inwall and rotor pipe nipple are radial and axial.
Described sealing ring flat-plate bottom surface is 3-20mm with the sealing short blade with the distance that seals the illusion plane that end face forms on the linear leaf, be connected with the hold-down screw bolt by jacking screw between sealing ring flat-plate and upper shell cover plate, jacking screw and hold-down screw evenly split along the circle spacing, and space, regulate hold-down screw adjustable sealing ring flat-plate height, jacking screw is used for the top tight sealing ring flat-plate fixes it.
Described guide vane is characterized in that: guide vane is the other shaped thin plate, and there is the bending angle at the middle part, and the guide vane windward side forms an inside curved surface towards interior bending; Guide vane top and bottom all have several bolts hole, described bending angle, and bending angle is 5 °～40 °.
Described tertiary air air-intake device, comprise meal collection ash cone, it is characterized in that: meal collection ash cone is divided into the main powder-separating area coupling housing of interconnective tertiary air air-intake device top and the short cylinder joint of tertiary air air-intake device below, the meal ash bucket, main powder-separating area coupling housing and meal ash bucket are funnel type, and all be equipped with some perpendicular to the blocking material ring of meal collection ash pyramidal tract to bus on both internal height directions from top to bottom, main powder-separating area coupling housing upper end is welded with connecting flange, main powder-separating area coupling housing lower end is connected with tertiary air air-intake device upper surface bolt, the upper end welding of tertiary air air-intake device lower surface and short cylinder joint, the outside, lower end of short cylinder joint is welded with cylinder flange, and meal ash bucket upper end is connected with the cylinder flange bolt; Described tertiary air air-intake device, has collar plate shape volute body, the volute plate of perforate in the middle of bottom surface is on the volute body, the whirlpool hull outside has two air inlets that are symmetric along the volute center line, the air inlet inlet end is equipped with the tertiary air orifice adpting flange, at the tertiary air guide vane that certain angle is installed along even circumferential between the bottom surface on the volute body, guide vane welds respectively with volute plate up and down in the volute plate perforate outside up and down.
The tertiary air guide vane of described certain angle, the rule that its angle is followed is: the guide vane on horizontal center line according to the horizontal center line angle be 40 °～80 °, all the other guide vanes, take this guide vane as benchmark, adjacent guide vane angle is 6 °～20 °.
Claims (3)
1. low-resistance and high-efficiency powder concentrator, it is characterized in that: have a volute body, the whirlpool hull outside is provided with four air inlets, volute body lower end is equipped with the housing supporting leg, in the volute body rotor assembly is installed, be provided with hermetically-sealed construction between rotor assembly and the volute body, the rotor inside upper part is equipped with eddy current and breaks up blade, some guide vanes also are installed in the volute body according to certain rules, volute body below is equipped with the tertiary air air-intake device, volute body top is connected with discharge pipe, volute body top is equipped with overarm brace, and the overarm brace top also is equipped with the decelerating through motor machine support, and motor and reductor are installed on the decelerating through motor machine support, the output shaft of reductor is connected to main shaft, and main shaft passes discharge pipe and is connected to rotor assembly; Described hermetically-sealed construction, comprise rotor top plate, rotor top plate upper surface inward flange is installed by welding with the rotor pipe nipple, rotor pipe nipple inboard is pasted with industrial wear resistant ceramic chip, on the rotor pipe nipple outer circumference of rotor top plate upper surface some rectangular box are installed also, the rectangular box lateral surface is welded with the wear Protection steel plate, be welded with nut in the rectangular box, be bolted between rectangular box and rotor top plate, the rectangular box upper surface is installed by welding with some sealing short blades and sealing linear leaf according to certain rule, and sealing linear leaf and rotor pipe nipple are welded to connect; There is the sealing ring flat-plate top of sealing short blade and sealing linear leaf, sealing ring flat-plate top is the upper shell cover plate, be bolted between sealing ring flat-plate and upper shell cover plate, upper shell cover plate lower surface, the sealing ring flat-plate outside also is installed by welding with fixedly ring flat-plate of sealing, upper shell cover plate inward flange is installed by welding with chimney fan, between chimney fan and rotor pipe nipple certain interval is arranged, rotor pipe nipple top is deep into apart from a distance, chimney fan bottom, chimney fan madial wall lower end is installed by welding with the angle steel ring, between angle steel ring inwall and rotor pipe nipple are radial and axial certain interval is arranged all, angle steel ring inwall is pasted with industrial wear resistant ceramic chip.
2. a kind of low-resistance and high-efficiency powder concentrator according to claim 1, it is characterized in that: described rotor pipe nipple is the cylinder that a metallic plate is made, its cylinder outer wall and chimney fan inwall spacing are at 3-20mm, and rotor pipe nipple top is deep into apart from 10-60mm place, chimney fan bottom; The distance that 3-20mm is all arranged between angle steel ring inwall and rotor pipe nipple are radial and axial.
3. a kind of low-resistance and high-efficiency powder concentrator according to claim 1, it is characterized in that: described guide vane, guide vane are the other shaped thin plate, and there is the bending angle at the middle part, the guide vane windward side forms an inside curved surface towards interior bending; Guide vane top and bottom all have several bolts hole, described bending angle, and bending angle is 5 °～40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910144966 CN101653764B (en) | 2009-09-16 | 2009-09-16 | Low-resistance and high-efficiency powder concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910144966 CN101653764B (en) | 2009-09-16 | 2009-09-16 | Low-resistance and high-efficiency powder concentrator |
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| Publication Number | Publication Date |
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| CN101653764A CN101653764A (en) | 2010-02-24 |
| CN101653764B true CN101653764B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910144966 Expired - Fee Related CN101653764B (en) | 2009-09-16 | 2009-09-16 | Low-resistance and high-efficiency powder concentrator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044242B (en) * | 2016-07-27 | 2019-05-21 | 无锡市华通电力设备有限公司 | A kind of flyash grader turbocharger housing structure |
| CN116493258B (en) * | 2023-06-28 | 2023-09-05 | 绵阳九方环保节能科技有限公司 | Horizontal vortex powder separator capable of preventing dust accumulation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230627Y (en) * | 1995-06-22 | 1996-07-10 | 李治修 | Vortex powder separator |
| CN2753472Y (en) * | 2004-11-22 | 2006-01-25 | 中天仕名科技集团有限公司 | Horizontal vortex powder separating machine with special structure |
| CN2923065Y (en) * | 2006-06-16 | 2007-07-18 | 周文权 | Efficient vortex powder sorting machine |
| CN200988034Y (en) * | 2006-12-21 | 2007-12-12 | 王成山 | Two stage vortex type powder selecting machine |
-
2009
- 2009-09-16 CN CN 200910144966 patent/CN101653764B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230627Y (en) * | 1995-06-22 | 1996-07-10 | 李治修 | Vortex powder separator |
| CN2753472Y (en) * | 2004-11-22 | 2006-01-25 | 中天仕名科技集团有限公司 | Horizontal vortex powder separating machine with special structure |
| CN2923065Y (en) * | 2006-06-16 | 2007-07-18 | 周文权 | Efficient vortex powder sorting machine |
| CN200988034Y (en) * | 2006-12-21 | 2007-12-12 | 王成山 | Two stage vortex type powder selecting machine |
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| CN101653764A (en) | 2010-02-24 |
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