CN2489885Y

CN2489885Y - Radial, axial combined coarse powder separater

Info

Publication number: CN2489885Y
Application number: CN 01238345
Authority: CN
Inventors: 朱永进
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-15
Filing date: 2001-06-15
Publication date: 2002-05-08
Anticipated expiration: 2011-06-15

Abstract

The utility model relates to a radial, axial combined coarse powder separator which is used for the separation of air transport powder. The utility model mainly comprises a roof covering board, an outer(middle, inner) pot, an outer(middle, inner) cone, a roof cone, a powder outlet tube, a powder inlet tube and a powder return tube. The upper and the lower ends of the radial baffle are respectively arranged at the roof covering board and the roof cone. The inside and outside of the axial baffle are respectively arranged at the outer, middle and inner pots. The utility model adopts the radial, axial combined utilization and can effectively separate the meal grain in gas and powder mixture. As single powder return channel is arranged outward, the fallen meal grain is avoided to conflict with updraft, and the coarse coal dust can smoothly return to grinding machine to be regrinded.

Description

Directly, axial associative form mill separator

The utility model relates to a kind of footpath, axial associative form mill separator, is used for that coal dust that strength carries, petroleum coke etc. are thick, the separation of fine silt, belongs to key equipment on the pulverized coal preparation systems such as power station, carbon element factory.

Before the utility model is made, in prior art: the mill separator that is used for pulverized coal preparation systems such as power station, carbon element factory is that the footpath (axle) of several single radially baffle plates or axial baffle, no external independent time powder passage is to mill separator.These several separators mainly comprise flour extraction pipe, lamina tecti, interior (outward) cylindrical shell, interior (outward) cone, return powder bucket, powder inlet pipe and powder retrieving pipe.Its operation principle is: when 1, primary mixture enters circular passage between the inside and outside cone by powder inlet pipe, because of volume enlarges, flow velocity reduces the Gravity Separation that produces coarse dust; 2, primary mixture is bored and the bump separation of generation coarse dust at inner cone lower end bump bump; 3, the primary mixture that continue to rise produces after through radially baffle plate that angle is set or axial baffle and rotatablely moves, coarse dust centrifugal force is big, from air-flow, separate and throw to the outer cylinder body inwall, the circular passage between Outer Taper, inner cone, by powder retrieving pipe return coal pulverizer, ball mill is refaced.

Because the swirl strength that air-flow is regulated to the single baffle plate of type mill separator in original footpath (axle) is limited, all the coarse dust in the separation bubble; And the qualified fine silt in the air-flow is taken away in multiple separation process meeting, has influenced separative efficiency.When the coarse dust that various separation processes are separated falls to back the powder bucket and the primary mixture of rising coexist in the circular passage between the inside and outside cone, the coarse dust of whereabouts can be subjected to carrying of ascending air, makes the chap of separator outlet powder.The coarse dust that falls also can be taken away the qualified fine silt in the ascending air, and the separative efficiency of separator is reduced.

The purpose of this utility model is to overcome above-mentioned weak point, thereby provides a kind of radially baffle plate, axial baffle to unite use: the swirl strength of air-flow is increased; Improve the eddy flow track of air-flow; Coarse dust is separated from air-flow under action of centrifugal force rapidly, and by external independent time powder passage successfully return coal pulverizer, ball mill is refaced.

Main solution of the present utility model is achieved in that it adopts installation flour extraction pipe 1 on lamina tecti 4, lamina tecti 4 is installed on the outer cylinder body 6, addendum cone 8 is installed on the inner barrel 12, Outer Taper 14 upper ends connect outer cylinder body 6, the lower end connects back powder bucket 17, middle cone 15 upper ends connect middle cylinder body 11, the lower end connects powder inlet pipe 18, inner cone 16 is connected on the inner barrel 12, returning powder tube 20 connects back powder bucket 17 and reaches back on the powder barrel soleplate 19, it is characterized in that radially baffle plate 5 upper ends adopt axle sleeve to be fixed on the lamina tecti 4, the lower end adopts axle bed to be fixed on the addendum cone 8, and axial baffle 10 outer ends adopt axle sleeve to be fixed on outer cylinder body 6, on the middle cylinder body 11; The inner axle bed that adopts is fixed on the inner barrel 12.

Description of drawings:

Fig. 1 is the utility model structural front view;

Fig. 2 is a radially baffle plate cutaway view (directly, axial baffle is united the use fundamental diagram) of the utility model A-A:

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model adopts installs flour extraction pipe 1, radially baffle plate angle indicating device 2 and explosion proof door 3 respectively on lamina tecti 4, lamina tecti 4 is installed on the outer cylinder body 6.Be shaped on door to access 7 on the outer cylinder body 6.Radially baffle plate 5 upper ends adopt axle sleeve to be fixed on the lamina tecti 4, and the lower end adopts axle bed to be fixed on the addendum cone 8.Radially baffle plate can adopt the 10-20 piece to use installation.Addendum cone 8 is installed on the inner barrel 12.Axial baffle aperture indicating device 9 also is housed on outer cylinder body 6.Axial baffle 10 outer ends adopt axle sleeve to be fixed on outer cylinder body 6, the middle cylinder body 11, and the inner axle bed that adopts is fixed on the inner barrel 12.Axial baffle can adopt the 30-40 piece to use and install.Outer Taper 14 upper ends are connected on the outer cylinder body 6, and the lower end connects back powder bucket 17.Middle cone 15 upper ends connect middle cylinder body 11, and the lower end connects powder inlet pipe 18.Inner cone 16 connects middle cylinder body 12, and powder retrieving pipe 20 is connected back powder bucket 17 and reaches back on the powder barrel soleplate 19.Returning powder barrel soleplate 19 is connected back on the powder bucket 17 and reaches on the powder inlet pipe 18.The external independent time powder passage 13 in circular passage between outer cylinder body 6, middle cylinder body 11 and Outer Taper 14, the middle cone 15.

The utility model is after primary mixture enters powder inlet pipe, through in, rise on the circular passage between the inner cone in axial baffle and the annular space between the baffle plate radially: because spool, radially baffle plate is provided with angle, air-flow produces in the space and rotatablely moves, coarse dust is thrown to the outer cylinder body inwall under action of centrifugal force, after being located at external independent time powder passage between outer cylinder body, middle cylinder body and Outer Taper, the middle cone, fall to powder retrieving pipe, return coal pulverizer, ball mill is refaced.Qualified fine silt then with air-flow through baffle plate radially, be expelled to the equipment of back by flour extraction pipe.

Compared with the prior art the utility model has the following advantages: 1, owing to adopted footpath, axial gear Plate unite use: improve the eddy flow track of air-flow, the swirl strength of air-flow increased, coarse dust from Mental and physical efforts also increase thereupon, can effectively isolate coarse dust, can obviously improve the separative efficiency of separator. 2, Owing to adopted footpath, axial baffle to unite use, the scope that makes separator regulate the opening particle size increases, And regulate sensitivity, can improve Mill output, reduce the powder process power consumption. 3, because external independent time powder passage arranged, The coarse dust that can avoid falling conflicts with the air-flow of rising, makes coarse dust can successfully return coal pulverizer, ball Grinding machine is refaced.

Claims

1, a kind of footpath, axial associative form mill separator, employing is gone up at lamina tecti (4) flour extraction pipe (1) is installed, lamina tecti (4) is installed on the outer cylinder body (6), addendum cone (8) is installed on the inner barrel (12), Outer Taper (14) upper end connects outer cylinder body (6), the lower end connects back powder bucket (17), middle cone (15) upper end connects middle cylinder body (11), the lower end connects powder inlet pipe (18), inner cone (16) is connected on the inner barrel (12), powder retrieving pipe (20) is connected back powder bucket (17) and reaches back on the powder barrel soleplate (19), returning powder barrel soleplate (19) is connected back powder bucket (17) and goes up and reach on the powder inlet pipe (18), it is characterized in that radially baffle plate (5) adopts axle sleeve to be fixed on the lamina tecti (4), the lower end adopts axle bed to be fixed on the addendum cone (8), axial baffle (10) outer end adopts axle sleeve to be fixed on outer cylinder body (6), on the middle cylinder body (11), the inner axle bed that adopts is fixed on the inner barrel (12).

2, footpath according to claim 1, axial associative form mill separator is characterized in that the external independent time powder passage in circular passage (13) between outer cylinder body (6), middle cylinder body (11) and Outer Taper (14), the middle cone (15).

3, footpath according to claim 1, axial associative form mill separator is characterized in that described radially baffle plate (5) can adopt the 10-20 piece.

4, footpath according to claim 1, axial associative form mill separator is characterized in that described axial baffle (10) can adopt the 30-40 piece.