CN106064150A - A rotary fly ash special classifier - Google Patents

Abstract

The invention discloses a rotary type special classifier for fly ash, which comprises a motor, wherein a rain cover is fixedly arranged at the top of the motor through a bracket, the bottom of the rain cover is fixedly connected with the top end of an observation bin through the bracket, the bottom end of a speed reducer is coaxially connected with an inner cavity of a shaft lever extending to the observation bin, a fine ash outlet is arranged at the left side of the observation bin, a rotating wheel is arranged at the lower end of the observation bin and is rotatably arranged in the inner cavity of the rotating wheel bin, a conical table is arranged at the bottom of the inner cavity of the rotating wheel, the bottom of the shaft lever is rotatably arranged in the inner cavity of the conical table, an outer ash bucket is fixedly arranged at the bottom end of the rotating wheel bin, an inner ash bucket is fixedly arranged in the inner cavity of the outer ash bucket, a square air pipe is arranged at the bottom end of the inner ash bucket, and the left side of the square-to-round joint is connected with a manual butterfly valve through a pipeline.

Description

A rotary fly ash special classifier

technical field

The invention relates to the technical field of coarse and fine classification of fly ash, in particular to a rotary fly ash special classifier.

Background technique

Fly ash can be divided into first grade, second grade and third grade according to the fineness. Their fineness is the same, they are all about 325 mesh, just because they pass through the sieve with 325 mesh fineness. The probabilities are different, so it is divided into first-class, second-class and third-class. More than 88% of the fly ash can pass through the first-class fly ash, 70% of the pass-through is the second-class fly ash, and 55% of the pass-through is the third-class fly ash. Ash, the currently used fly ash separation system is a special equipment suitable for fly ash separation developed after a long period of extensive tests based on the principle of low-speed swirl separation. Since the equipment was put into use, it has provided a number of One hundred sets of sorting machines and supporting equipment have achieved obvious social and economic benefits. Due to the use of reasonable gas-solid two-phase flow velocity field control technology, the equipment solves the problem of general sorting machines by adopting unique technology and novel structure. It has the disadvantages of large resistance, high energy consumption, and serious wear. It also has the advantages of simple structure, convenient operation, low operation and maintenance costs, high separation efficiency, and long life. In addition, the equipment has strong adaptability to fly ash. The particle size range is wide, and the adjustment method is simple. Since its inception, the internal structure of the sorter has been further optimized and designed, especially the effective wear-resistant measures have been implemented for the flow part of the sorter, so that the separation efficiency and The wear resistance has been greatly improved, the sorting efficiency exceeds 85%, and the service life is as high as 30 years. Therefore, we propose a rotary fly ash special classifier.

Contents of the invention

The object of the present invention is to provide a rotary fly ash special classifier to solve the problems of low production efficiency and short service life of traditional classifiers raised in the above background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a special rotary fly ash classifier, including a motor and a reducer installed at the bottom of the motor, the top of the motor is fixed with a rain cover through a bracket, and The bottom of the rain cover is fixedly connected with the top of the observation bin through a bracket, the bottom end of the reducer is coaxially connected with a shaft, and the shaft extends to the inner cavity of the observation bin, and the left side of the observation bin is provided with a fine ash outlet , the lower end of the observation chamber is provided with a rotating wheel, and the rotating wheel is installed in the inner cavity of the rotating wheel bin, the bottom of the inner cavity of the rotating wheel is installed with a conical platform, and the bottom of the shaft is installed in the conical platform The inner cavity of the rotating wheel bin is fixed with an outer ash hopper, and the outer wall of the outer ash hopper is fixed with a corbel floor, and the inner cavity of the outer ash hopper is fixed with an inner ash hopper. The bottom end of the inner cavity of the ash hopper is provided with a square air duct, and the left end of the square air duct is fixedly installed with a square-turned-round joint, and the left side of the square-turned-round joint is connected with a manual butterfly valve through a pipeline. The bottom of the outer ash hopper A manhole door is arranged on the side wall, and a coarse ash outlet is fixedly installed at the bottom of the outer ash hopper.

Preferably, the top of the observation chamber is provided with a through hole, and the inner cavity of the through hole is fixedly installed with a bearing, the shaft extends through the bearing to the inner cavity of the conical platform, and the inner cavity of the conical platform is fixedly installed with a Fitting bearings at the bottom end of the shaft.

Preferably, the left side of the top of the square air duct is fixedly installed with a square-rotary joint through a snap ring, and the pipes fixedly connected to the left side of the square-rotary joint extend through the inner ash hopper and the outer ash hopper to the outside of the outer ash hopper , the bottom end of the connecting pipe is fixed with a manual butterfly valve through the connecting flange.

Preferably, both the inner ash hopper and the outer ash hopper are conical ash hoppers.

Compared with the prior art, the beneficial effect of the present invention is: the rotary fly ash special classifier, the mixed gas passing through the air ash mixer is transported to the classifier by negative pressure from the feed port, and the air in the classifier is Among them, the resultant force produced by the centrifugal force Fc (proportional to the cube of the particle diameter) and the aerodynamic resistance Fd (proportional to the diameter of the particle) on the particles is different. The finer particles move closer to the turbine because Fd>Fc and are guided by the turbine. To the discharge port (fine ash + gas), it is collected by the cyclone collector to become the finished fine ash required by the user, which improves the sorting efficiency. At the same time, the turbine speed is controlled by the frequency conversion motor, and the turbine speed can be adjusted arbitrarily through the frequency converter. The faster the turbine speed, the greater the centrifugal force Fc, and the finer the particles entering the classifier turbine, that is, the finer the finished fine ash particles. Once the turbine speed is determined and the air volume of the system remains unchanged, the particles classified by the classifier will also remain relatively stable.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

In the figure: 1 motor, 2 reducer, 3 rain cover, 4 shaft rod, 5 observation bin, 6 fine ash outlet, 7 rotating wheel bin, 8 rotating wheel, 9 conical platform, 10 outer ash hopper, 11 corbel Bottom plate, 12 inner ash hopper, 13 square rotary joint, 14 manhole door, 15 coarse ash outlet.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, the present invention provides a kind of technical proposal: a kind of rotating type fly ash classifier, comprises motor 1 and reducer 2 installed on the bottom of motor 1, the top of described motor 1 is fixedly installed with anti- The rain cover 3, and the bottom of the rain cover 3 is fixedly connected to the top of the observation bin 5 through a bracket, the bottom end of the reducer 2 is coaxially connected with a shaft 4, and the shaft 4 extends to the inner cavity of the observation bin 5 , and the left side of the observation bin 5 is provided with a fine ash outlet 6, the lower end of the observation bin 5 is provided with a rotating wheel 8, and the rotating wheel 8 is installed in the inner cavity of the rotating wheel bin 7, and the inner cavity of the rotating wheel 8 A conical platform 9 is installed at the bottom of the cavity, and the bottom of the shaft rod 4 is rotatably installed in the inner cavity of the conical platform 9. The bottom end of the rotating wheel bin 7 is fixedly equipped with an outer ash hopper 10, and the outer wall of the outer ash hopper 10 A corbel bottom plate 11 is fixedly installed on the top, and an inner ash hopper 12 is fixedly installed in the inner cavity of the outer ash hopper 10, and a square air duct 17 is arranged at the bottom end of the inner cavity of the inner ash hopper 12, and the square air duct 17 The left end is fixedly equipped with a square-to-round joint 13, and the left side of the square-to-round joint 13 is connected with a manual butterfly valve 16 through a pipeline. The bottom side wall of the outer ash hopper 10 is provided with a manhole door 14, and Coarse ash outlet 15 is fixedly installed at the bottom of 10, and the rotary fly ash special classifier, the mixed gas passing through the air ash mixer is conveyed to the sorter by negative pressure from the feed port, and in the sorting chamber, the particles The resultant force produced by the centrifugal force Fc (proportional to the cube of the particle diameter) and the aerodynamic resistance Fd (proportional to the particle diameter) is different. The finer particles move closer to the turbine because Fd>Fc, and are guided by the turbine to the discharge. At the mouth (fine ash + gas), it is collected by the cyclone collector to become the finished fine ash required by the user, which improves the sorting efficiency. At the same time, the turbine speed is controlled by the frequency conversion motor, and the turbine speed can be adjusted arbitrarily through the frequency converter. The faster the turbine speed, the greater the centrifugal force Fc, and the finer the particles entering the classifier turbine, that is, the finer the finished fine ash particles. Once the turbine speed is determined and the air volume of the system remains unchanged, the particles classified by the classifier will also remain relatively stable.

Wherein, the top of the observation chamber 5 is provided with a through hole, and the inner cavity of the through hole is fixedly equipped with a bearing, the shaft rod 4 extends through the bearing to the inner cavity of the conical platform 9, and the inner cavity of the conical platform 9 is fixedly installed with a The bearing matching the bottom end of the shaft rod 4, the square-rotary joint 13 is fixedly installed on the left side of the top end of the square air duct 17 through a snap ring, and the pipes fixedly connected to the left side of the square-rotary joint 13 respectively run through the inner ash hopper 12 and the outer ash hopper 10 extend to the outside of the outer ash hopper 10, the bottom end of the connecting pipe is fixedly equipped with a manual butterfly valve 16 through the connecting flange, and the inner ash hopper 12 and the outer ash hopper 10 are tapered ash hoppers.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. a rotary flyash Special grading machine, including motor (1) and be arranged on motor (1) bottom reductor (2), its It is characterised by: the top of described motor (1) is installed with rain cover (3) by support, and the bottom of rain cover (3) is by propping up Frame is fixing with the top observing storehouse (5) to be connected, and the bottom of described reductor (2) is coaxially connected with axostylus axostyle (4), and axostylus axostyle (4) prolongs Extending the inner chamber observing storehouse (5), and the left side observing storehouse (5) is provided with fine ash outlet (6), the lower end of described observation storehouse (5) sets It is equipped with rotation wheel (8), and rotation wheel (8) is rotatably installed in the inner chamber rotating wheel storehouse (7), the intracavity bottom of described rotation wheel (8) Taper platform (9) is installed, and the lower rotation of axostylus axostyle (4) is arranged on the inner chamber of taper platform (9), the end of described rotation wheel storehouse (7) End is installed with on outer ash bucket (10), and the outer wall of outer ash bucket (10) and is installed with bracket base plate (11), described outer ash bucket (10) inner chamber is installed with interior ash bucket (12), and the inner chamber bottom of interior ash bucket (12) is provided with square airduct (17), described The left end side of being installed with of square airduct (17) turns round splce (13), and the square pipeline that passes on left turning round splce (13) connects There is Hand-operated butterfly valve (16), the bottom sidewall of described outer ash bucket (10) is provided with manhole door (14), and the bottom of outer ash bucket (10) It is installed with cinder outlet (15).

One the most according to claim 1 rotary flyash Special grading machine, it is characterised in that: described observation storehouse (5) Top offer through hole, and the inner chamber of through hole is installed with bearing, and axostylus axostyle (4) runs through bearing and extends to taper platform (9) Inner chamber, and the inner chamber of taper platform (9) is installed with the bearing that the bottom of size and axostylus axostyle (4) is suitable.

One the most according to claim 1 rotary flyash Special grading machine, it is characterised in that: described square airduct (17) top left hand turns round splce (13) by the snap ring side of being installed with, and side turns the fixing connection in round splce (13) left side Pipeline extends through interior ash bucket (12) and outer ash bucket (10) extends to the outside of outer ash bucket (10), connect the bottom of pipeline by even Acting flange is installed with Hand-operated butterfly valve (16).

One the most according to claim 1 rotary flyash Special grading machine, it is characterised in that: described interior ash bucket (12) It is taper ash bucket with outer ash bucket (10).