CN201195126Y

CN201195126Y - Superfine classifier for Raymondmill

Info

Publication number: CN201195126Y
Application number: CNU2008203007587U
Authority: CN
Inventors: 邓敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-16
Filing date: 2008-05-16
Publication date: 2009-02-18
Anticipated expiration: 2018-05-16

Abstract

The utility model discloses a superfine classifier matched with a Raymond mill. The superfine classifier is characterized in that a cage type rotor of a traditional classifier is improved, namely, a small coarse preventing vane matched with a powder body coarse-preventing ring cover of a powder outlet at the mill top shell is designed into the structure mode of a high-voltage centrifugal fan vane; a circumference ring surface for matching the small coarse preventing vane and the powder body coarse-preventing ring cover is changed into a taper with the conicity of 30-60 degrees; the bottom of the powder body coarse-preventing ring cover and the top of the small coarse preventing vane are respectively provided with an outwards convex ring and a concave ring groove which are in labyrinth fit; and the small coarse preventing vane is arranged at the top of a flange disk inner support on the cage type rotor. The utility model adopts the special structure for improving the reverse wind pressure in the gap between the rotor and the powder body coarse-preventing ring cover, causes the coarse powder to get great wind pressure resistance when entering the rotor from the gap between the rotor and the powder body coarse-preventing ring cover so as to block the coarse power to enter and achieve the coarse preventing effect.

Description

The Raymond machine superfine classifier

(1) technical field

The utility model relates to the Raymond machine parts, is a kind of superfine classifier specifically.

(2) background technology

Raymond machine is a breeze sector application machine the most widely, and it is to roll mineral by the centrifugal force that the Burnisher apparatus that hangs produces to become powder in running, and classified machine extracts the fine powder product of nominal order number.

The main member of grader is the cage rotor that is driven by variable-frequency motor, cage rotor is installed in shell bottom, Raymond machine machine top, the upper end of cage rotor is communicated with the meal outlet of machine top shell, for preventing to run slightly, the upper side of cage rotor is lived by the anti-thick ring cover cap of the downward powder of machine top shell, the side arrangement vertical configuration fine powder primary blades of cage rotor, the fine powder primary blades is by in the rotor, lower flange supports, anti-thick the ring in the cover of powder that upper flange plate is placed on machine top shell passed in fine powder primary blades upper end, for preventing to enter in the rotor the slit of meal between anti-thick ring cover of powder and fine powder primary blades, on making, should guarantee processing and installation accuracy.

In the actual operation, processing and installation accuracy can't guarantee the stopping of meal, thereby rotating speed that must the increasing variable-frequency motor, prevents that with the high rotating speed of rotor meal from entering finished product, increased the energy consumption of grader for this reason, reduced the output of finished product.At present, solution at this problem is that the leakproof air port of aiming at the meal passage is set on the shell of machine top, the introducing high-pressure air source prevents to run thick in the mode of sealing gland, reach the purpose of improving the quality of products, but this way has increased the complexity of grader structure, and set up the air compressor machine high-pressure air source in addition, increased new energy consumption again, and the cost of air compressor machine and maintenance cost are all higher.

(3) utility model content

At the weak point of above-mentioned Raymond machine grader, the utility model purpose provides and a kind ofly effectively cuts down the consumption of energy, and improves the Raymond machine superfine classifier of output and quality.Can realize the Raymond machine superfine classifier of above-mentioned purpose, cage rotor wherein is installed on shell meal outlet place, machine top, the top of cage rotor circumferential vanes cooperates as suit with the anti-thick ring cover of the powder of machine top shell meal outlet bottom, circumferential vanes is then by in the cage rotor, lower flange supports the location, the blade that cooperates with the anti-thick ring cover of powder is anti-thick vanelets, the outer blade of the anti-thick ring cover of powder is the fine powder primary blades, different is: anti-thick vanelets is not to be extended upward by the fine powder primary blades to form, but being become the planform of centrifugal high pressure fan blade by specialized designs, its width is greater than the width of fine powder primary blades.

Form a similar centrifugal high pressure fan to the interval of external pressure wind between the anti-thick ring cover of the anti-thick vanelets of centrifugal fan blade shape and meal, the vapour lock of formation prevents entering of coarse dispersion effectively.

The anti-thick ring cover of powder is the taper that Open Side Down enlarges with the anchor ring that cooperates of anti-thick vanelets, and this taper has suitable tapering (between 30 degree～60 degree), and wind concentration is outwards forward extruded, and avoids wind-force to disperse.

Further improving anti-thick measure is bulge loop outside the bottom surface of the anti-thick ring cover of powder is provided with, and offers concave ring groove at anti-thick vanelets end face, and outer bulge loop cooperates as labyrinth type with concave ring groove, increases the tortuous passageway that meal enters, and reduces the power that enters of meal.

Described anti-thick vanelets setting is installed on the upper flange plate top, and the setting of fine powder primary blades is installed between the upper and lower ring flange.

The shape of described cage rotor can or be the cylindrical cage body for circular cone cage body, and effect is basic identical.

Advantage of the present utility model:

The utility model Raymond machine takes to improve the special construction of reverse pressure in rotor and the anti-thick ring cover of the machine top shell powder gap with superfine classifier, make meal when the gap of the anti-thick ring cover of rotor and powder enters in the rotor, must be subjected to great blast resistance, thereby stop that meal enters, reach anti-thick effect.Compare with superfine classifier with traditional Raymond machine, the utility model rotor speed is minimum, and the product precision that classification goes out is very high, has saved energy, has improved output, and accuracy of manufacture requirement simultaneously is not very high, and is simple in structure.

(4) description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the structural representation of the another kind of embodiment of the utility model.

Figure number sign: 1, the anti-thick ring cover of powder; 2, anti-thick vanelets; 3, turning cylinder; 4, upper flange plate; 5, fine powder primary blades; 6, lower flange; 7, outer bulge loop; 8, concave ring groove; 9, wind-guiding Conical Shells With; 10, machine top shell.

(5) specific embodiment

Embodiment with two kinds of structures illustrates the technical scheme of the utility model Raymond machine with superfine classifier, and as shown in Figure 1 and Figure 2, critical piece of the present utility model is a cage rotor.

In Fig. 1, cage rotor is the circular cone cage body that is supported by upper and

lower ring flange

4,6, upper and

lower ring flange

4,6 is coaxially installed on the vertical rotation axle 3, cage rotor is made up of two parts up and down, the last fraction of cage rotor is the anti-thick vanelets 2 of circumference, anti-thick vanelets 2 is fixedly mounted on the top of upper flange plate 4, is the arrangement form of centrifugal high pressure fan blade; The following major part of cage rotor is the fine powder primary blades 5 of circumference, and fine powder primary blades 5 is installed between the upper and

lower ring flange

4,6; The width of anti-thick vanelets 2 is greater than the width of fine powder primary blades 5, and the periphery of anti-thick vanelets 2 is the taper of upwards dwindling, and its tapering is between 30 degree～60 degree, and the periphery of fine powder primary blades 5 is the taper of downward expansion.

Cage rotor is installed in the bottom of Raymond machine machine top shell 10, faces the meal outlet of machine top shell 10, and the turning cylinder 3 outer meal outlets of stretching in machine top shell 10 of cage rotor are connected with shaft coupling with the output shaft of variable-frequency motor.The anti-thick ring cover 1 of powder of concentric is set around the meal outlet of shell 10 bottoms, machine top, and the anti-thick ring cover 1 of powder is the taper of downward expansion, and its tapering is between 30 degree～60 degree, as shown in Figure 1.Anti-thick vanelets 2 coaxial packages at the cage rotor top that is in place are in the anti-thick ring cover 1 of powder.

The bottom of the anti-thick ring cover 1 of powder is provided with outer bulge loop 7, and the top of anti-thick vanelets 2 is provided with concave ring groove 8, and outer bulge loop 7 forms labyrinth type with concave ring groove 8 and cooperates, as shown in Figure 1.

As shown in Figure 1, the bottom of lower flange 6 also is equipped with the wind-guiding Conical Shells With 9 that tapering reduces.

In Fig. 2, cage rotor is the cylindrical cage body, and its internal structure and mounting means thereof are identical with the circular cone cage rotor of Fig. 1.

Claims

1. Raymond machine superfine classifier, comprise the cage rotor that is installed on machine top shell (10) meal outlet, the top of cage rotor circumferential vanes cooperates with the anti-thick ring cover of powder (1) of machine top shell (10) meal outlet bottom, described circumferential vanes is supported by the upper and lower ring flange in the cage rotor (4,6), it is characterized in that: the blade that cooperates with the anti-thick ring cover of powder (1) is anti-thick vanelets (2), and anti-thick vanelets (2) is designed to the version of centrifugal high pressure fan blade.

2. Raymond machine superfine classifier according to claim 1 is characterized in that: the anti-thick ring cover of powder (1) is the taper that Open Side Down enlarges with the anchor ring that cooperates of anti-thick vanelets (2).

3. Raymond machine superfine classifier according to claim 2 is characterized in that: the tapering of described taper is between 30 degree～60 degree.

4. Raymond machine superfine classifier according to claim 2 is characterized in that: the bottom surface of the anti-thick ring cover of powder (1) is provided with outer bulge loop (7), and the concave ring groove of offering with anti-thick vanelets (2) end face (8) cooperates as labyrinthic.

5. according to any described Raymond machine superfine classifier in the claim 1～4, it is characterized in that: anti-thick vanelets (2) is arranged at upper flange plate (4) top.