CN102601053A

CN102601053A - Airflow grader

Info

Publication number: CN102601053A
Application number: CN2012100460311A
Authority: CN
Inventors: 任瑞清
Original assignee: SHANDONG HUAIYUAN NEW MATERIAL EQUIPMENT CO Ltd
Current assignee: SHANDONG HUAIYUAN NEW MATERIAL EQUIPMENT CO Ltd
Priority date: 2012-02-27
Filing date: 2012-02-27
Publication date: 2012-07-25

Abstract

The invention discloses an airflow grader, which belongs to the technical field of solid powder grading equipment and comprises a grading impeller driven by a power device. A cyclone barrel is sleeved on the periphery of the grading impeller, grading airflow flows through the cyclone barrel, a feeding opening at the position corresponding to that of the grading impeller is arranged at the top of the cyclone barrel, an air inlet is arranged on the cyclone barrel, a material grading cavity is formed between the cyclone barrel and the grading impeller, an inner barrel is disposed below the grading impeller, a sealing device is disposed between the inner barrel and the grading impeller, a fine powder discharge opening is arranged at the bottom of the inner barrel, the lower side of the cyclone barrel is hermetically connected with an outer barrel surrounding the inner barrel, a coarse powder discharge opening is arranged at the bottom of the outer barrel, materials are graded by the structure and drop in the grading cavity from the feeding opening by the aid of gravity, only one cyclone barrel and the grading impeller are used for separating coarse powder from fine powder, and the airflow grader is simple in structure, stable in performance and low in energy consumption.

Description

Gas flow sizing machine

Technical field

The present invention relates to relate in particular to a kind of gas flow sizing machine with a kind of pressed powder classifying equipoment.

Background technology

The classification principle of present gas flow sizing machine all is that material is delivered in the grading room usually, and the cooperation through classification air-flow and grading wheel in the grading room makes stock grading, adopts secondary air usually for improving a lot of graders of grading effect; Even three air intakes, perhaps adopt two even more a plurality of grading wheel, cause the structure more complicated of complete machine; And energy consumption is higher; And, adopting high-precision gas flow sizing machine relatively to waste for some material lower to the classification fineness requirement, the charging aperture of some gas flow sizing machine is positioned at the below of grading room; Divide unit room to need bigger air-flow to blow for powder is arrived, energy consumption is bigger.

Summary of the invention

Technical problem to be solved by this invention is: a kind of gas flow sizing machine is provided, and it is simple in structure, and energy consumption is low, and being fit to separate diameter range is the medium fineness powder of 20-200um.

For solving the problems of the technologies described above; Technical scheme of the present invention is: a kind of gas flow sizing machine, comprise the classifying turbine that drives by power set, and said classifying turbine periphery is arranged with the whirlwind tube that supplies the classification air communication to cross; The top of said whirlwind tube is provided with and the corresponding charging aperture in said classifying turbine position; Said whirlwind tube is provided with air inlet, forms the classification chamber to stock grading between said whirlwind tube and the classifying turbine, and said classifying turbine below is provided with inner barrel; Be provided with sealing device between said inner barrel and the said classifying turbine; The bottom of said inner barrel is provided with the fine powder discharging opening, and said whirlwind tube below is sealedly connected with the outer cylinder body around inner barrel, and the bottom of said outer cylinder body is provided with the meal discharging opening.

As a kind of improvement; Said sealing device comprises first labyrinth ring and second labyrinth ring that cooperatively interacts; Said first labyrinth ring is fixedly installed on the said inner barrel and said first labyrinth ring is provided with annular groove; Said second labyrinth ring is fixedly installed on the said classifying turbine and said second labyrinth ring is provided with annular ridge; Said second sealing ring is provided with the resistance material ring that is centered around the first sealing ring periphery, and said inner barrel is provided with the inlet channel that is communicated with ambient atmosphere, and said inlet channel runs through said outer cylinder body and is communicated with said annular groove.

As a kind of improvement, the end of said inlet channel is provided with air filter.

As a kind of improvement; Be installed with on the said whirlwind tube and guide the classification air-flow to blow to the inducer of classifying turbine; Said inducer comprises the upward dish and the lower wall of annular; Said going up between dish and the lower wall is provided with some flow deflectors, and said flow deflector annular array distributes, and forms the gap that supplies the classification air communication to cross between the two adjacent flow deflectors.

As a kind of improvement, be provided with the blocking material frame that stops material entering whirlwind tube between said whirlwind tube and the inducer.

As a kind of improvement, said classifying turbine upper fixed is equipped with the lead material spreading cone in classification chamber of material, and said material spreading cone is corresponding with the charging aperture position.

Owing to adopted technique scheme, the present invention to have following several advantage:

(1) charging aperture is positioned at top, classification chamber, and material is fallen to the classification chamber by the self gravitation effect, saves conduct and transports the air-flow of material power, and help material dispersed, has both reduced energy consumption, and can reduce the air pressure in the complete machine.

(2) material drops on the classifying turbine, and the classifying turbine rotation is uniformly dispersed material and falls into the classification chamber, improves grading effect; For making grading effect higher, the classifying turbine upper fixed has material spreading cone, so material spreading cone and classifying turbine rotate synchronously; When material fell on the material spreading cone, the material spreading cone rotation disperseed material, is evenly scattered in the classification chamber; More can guarantee grading effect, the charging rate of material is fast, and classifying turbine speeds up accordingly; Can guarantee that equally material is uniformly dispersed, guarantee the classification quality.

(3) only use a classifying turbine; The classifying turbine periphery is provided with the into whirlwind tube of classification air-flow; The classification fineness can be come through the rotating speed of classifying turbine and/or the intensity of classification air-flow, reaches the classification fineness of control powder and the purpose that improves output, and is easy to use.

(4) only use a whirlwind tube, promptly only adopt air intake one time, saved secondary air, in addition three air intakes, both reduced energy consumption, also reduced the complexity of device structure, saved the space.

(5) outer cylinder body of collecting inner barrel and the meal of fine powder after the classification all is positioned at the below in extension set chamber, and the fine powder discharging opening is positioned at below the inner barrel, and fine powder itself has whereabouts trend under the effect of gravity; During therefore from fine powder discharging opening collection fine powder, the suction that applies is less, has reduced energy consumption; The meal discharging opening is positioned at the outer cylinder body below, and the bigger gravity that utilizes of the particle of meal can fast speed fall, when being discharged by the meal discharging opening; More save energy; Cut down the consumption of energy, and this two discharging openings only are set, debugging gas flow sizing machine that can be very fast is to optimum performance.

In sum, this machine has greatly reduced energy consumption, even under the very fast situation of charging rate; The pressure of whole system can remain on 600-800dapa, and the material gravity that material from top to bottom makes full use of when operation cuts down the consumption of energy; Also make the running of material shorter; Each installation site of this machine also as far as possible according to from top to bottom order, makes compact integral structure, and floor space is little.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the structure cutaway view of the embodiment of the invention;

Fig. 2 is the partial enlarged drawing of A portion among Fig. 1;

Fig. 3 is the structural representation of inducer of the present invention;

Among the figure: 1, top cover; 2, the whirlwind tube; 3, blocking material frame; 4, inducer; 41, last dish; 42, flow deflector; 43, lower wall; 5, classifying turbine; 6, air filter; 7, inlet channel; 8, outer cylinder body; 9, motor; 10, main shaft; 11, charging aperture; 12, material spreading cone; 13, the fine powder discharging opening; 14, inner barrel; 15, the meal discharging opening; 16, the second labyrinth rings; 17, the resistance material ring; 18, the first labyrinth rings.

The specific embodiment

Shown in Fig. 1, Fig. 2 and Fig. 3 are common; A kind of gas flow sizing machine; Comprise the classifying turbine 5 that is driven by power set, said classifying turbine 5 is fixedly installed on the main shaft 10, and said power set are generally motor 9; Said motor 9 is in transmission connection with main shaft 10, can change the rotating speed of classifying turbine 5 through frequency converter;

Said classifying turbine 5 peripheries are arranged with the whirlwind tube 2 that supplies the classification air communication to cross, and said whirlwind tube 2 is provided with air inlet, form the classification chamber to stock grading between said whirlwind tube 2 and the classifying turbine 5; Be installed with on the said whirlwind tube 2 and guide the classification air-flow to blow to the inducer 4 of classifying turbine 5; Said inducer 4 comprises the upward dish 41 and lower wall 43 of annular, and said going up between dish 41 and the lower wall 43 is provided with some flow deflectors 42, said flow deflector 42 annular arrays distribution; Form the gap that supplies the classification air communication to cross between the two adjacent flow deflectors 42; Through inducer 4 guiding classification air-flows, improve grading effect, be provided with the blocking material frame 3 that stops material entering whirlwind tube 2 between said whirlwind tube 2 and the inducer 4; The dish 41 of going up of said inducer 4 is installed on the blocking material frame 3, and lower wall 43 is installed on the whirlwind tube 2;

The top of said whirlwind tube 2 is provided with corresponding charging aperture 11 said classifying turbine 5 upper fixed in said classifying turbine 5 positions and is equipped with the lead material spreading cone 12 in classification chamber of material; Said material spreading cone 12 is corresponding with charging aperture 11 positions; Be sealed and installed with top cover 1 on the said whirlwind tube 2, said charging aperture 11 is arranged on the top cover 1;

Said classifying turbine 5 belows are provided with inner barrel 14; Be provided with sealing device between said inner barrel 14 and the said classifying turbine 5; Sealing device is specifically as shown in Figure 2, and said sealing device comprises first labyrinth ring 18 and second labyrinth ring 16 that cooperatively interacts, and said first labyrinth ring 18 is fixedly installed on the said inner barrel 14 and said first labyrinth ring 18 is provided with annular groove; Said second labyrinth ring 16 is fixedly installed on the said classifying turbine 5 and said second labyrinth ring 16 is provided with annular ridge; Said second sealing ring is provided with the resistance material ring 17 that is centered around the first sealing ring periphery, and resistance material ring 17 can prevent that material from getting into that said inner barrel 14 is provided with inlet channel 7 between first labyrinth ring 18 and second labyrinth ring 16, and said inner barrel 14 is provided with the inlet channel 7 that is communicated with ambient atmosphere; Said inlet channel 7 runs through said outer cylinder body 8 and is communicated with said annular groove; Inlet channel 7 can make outside air get in the annular groove of first labyrinth ring 18, prevents that the material of outer cylinder body 8 from getting into the gap between first labyrinth ring 18 and second labyrinth ring 16 with air-flow, and the end of said inlet channel 7 is provided with air filter 6; Impurity in air filter 6 filtered airs; Play a protective role, can prevent to get into inner barrel 14, influence grading effect by the space beyond the classifying turbine 5 through above-mentioned sealing device;

The bottom of said inner barrel 14 is provided with fine powder discharging opening 13; Said whirlwind tube 2 belows are sealedly connected with the outer cylinder body 8 around inner barrel 14; The bottom of said outer cylinder body 8 is provided with meal discharging opening 15, and outer cylinder body 8 is installed on the support that supports it, forms body with support.

Operation principle of the present invention is: material is got into by charging aperture 11, drops on the material spreading cone 12 in entering under the gravity effect, and material spreading cone 12 is in the drive decline material of classifying turbine 5 gets rid of like the classification chamber uniformly; The classification air-flow that is got into by the air inlet of whirlwind tube 2 blows to classifying turbine 5 with the material in the extension set chamber; Fine powder gets into inner barrel 14 by classifying turbine 5, is discharged by fine powder discharging opening 13, and meal falls into outer cylinder body 8 by the classification chamber; Discharge by meal discharging opening 15; Realize classification, the classification fineness is by the rotary speed of classifying turbine 5 and/or the intensity decision of classification air-flow, and the present invention is applicable to raw materials such as feldspar, quartz, nepheline, wollastonite.

Claims

1. gas flow sizing machine is characterized in that: comprise the classifying turbine that is driven by power set, said classifying turbine periphery is arranged with the whirlwind tube that supplies the classification air communication to cross; The top of said whirlwind tube is provided with and the corresponding charging aperture in said classifying turbine position; Said whirlwind tube is provided with air inlet, forms the classification chamber to stock grading between said whirlwind tube and the classifying turbine, and said classifying turbine below is provided with inner barrel; Be provided with sealing device between said inner barrel and the said classifying turbine; The bottom of said inner barrel is provided with the fine powder discharging opening, and said whirlwind tube below is sealedly connected with the outer cylinder body around inner barrel, and the bottom of said outer cylinder body is provided with the meal discharging opening.

2. gas flow sizing machine as claimed in claim 1; It is characterized in that: said sealing device comprises first labyrinth ring and second labyrinth ring that cooperatively interacts; Said first labyrinth ring is fixedly installed on the said inner barrel and said first labyrinth ring is provided with annular groove; Said second labyrinth ring is fixedly installed on the said classifying turbine and said second labyrinth ring is provided with annular ridge; Said second sealing ring is provided with the resistance material ring that is centered around the first sealing ring periphery, and said inner barrel is provided with the inlet channel that is communicated with ambient atmosphere, and said inlet channel runs through said outer cylinder body and is communicated with said annular groove.

3. gas flow sizing machine as claimed in claim 2 is characterized in that: the end of said inlet channel is provided with air filter.

4. gas flow sizing machine as claimed in claim 1; It is characterized in that: be installed with the inducer that guiding classification air-flow blows to classifying turbine on the said whirlwind tube; Said inducer comprises the upward dish and the lower wall of annular; Said going up between dish and the lower wall is provided with some flow deflectors, and said flow deflector annular array distributes, and forms the gap that supplies the classification air communication to cross between the two adjacent flow deflectors.

5. gas flow sizing machine as claimed in claim 4 is characterized in that: be provided with the blocking material frame that stops material entering whirlwind tube between said whirlwind tube and the inducer.

6. like the described gas flow sizing machine of each claim of claim 1-5, it is characterized in that: said classifying turbine upper fixed is equipped with the lead material spreading cone in classification chamber of material, and said material spreading cone is corresponding with the charging aperture position.