CN205146692U - Vortex classifier - Google Patents

Abstract

The utility model discloses a vortex classifier. The bottom of the housing is provided with an air inlet and a coarse powder outlet. Located above the spreading blade, the middle part of the main shaft is connected with a first-stage rotor and a second-stage rotor. The first-stage rotor is a straight cage structure, and the second-stage rotor is a conical cage structure. The guide vanes are set outside the first-stage rotor and inside the first-stage rotor. There is a guide cone, the top of the first-stage rotor is connected with the air outlet, the upper part of the second-stage rotor is connected with the guide cone, and the top of the guide cone is provided with an opening connected with the air outlet; the first-stage rotor and the guide vane A medium-coarse powder feeding cone is arranged between them, a conical wind guide ring is arranged between the medium-coarse powder feeding cone and the second-stage rotor, and a medium-coarse powder discharge port is arranged at the bottom of the medium-coarse powder feeding cone. It has the advantages of high classification accuracy, greatly improved sorting efficiency, compact structure, convenient adjustment, and low energy consumption.

Description

Vortex classifier

technical field

The utility model relates to a highly dispersed eddy current classifier, which belongs to the technical field of eddy current classifiers.

Background technique

The powder separator has gone through the first generation of centrifugal type, the second generation of cyclone type, and now it has developed to the third generation of eddy current powder separator. In the closed-circuit cement raw meal and cement grinding system process, the classifier is an important equipment for cement production. The performance of the classifier plays a very important role in improving the production efficiency of the system and reducing energy consumption.

Utility model content

Purpose: In order to overcome the deficiencies in the prior art, the utility model provides a vortex classifier.

Technical solution: In order to solve the above-mentioned technical problems, the technical solution adopted in the utility model is:

A vortex classifier, comprising a housing, a main shaft, spreading vanes, guide vanes, a primary rotor, a secondary rotor, and a feed pipe, characterized in that: the bottom of the housing is provided with an air inlet and a coarse powder outlet, and the housing There is a swirl air inlet pipe in the middle of the body, the spreading blade is connected to the bottom of the main shaft, the outlet of the feeding pipe is located above the spreading blade, the middle part of the main shaft is connected with a primary rotor and a secondary rotor, and the primary rotor is a straight cage structure. The second-stage rotor is a cone-shaped cage structure, the guide blades are set outside the first-stage rotor, and the first-stage rotor is provided with a diversion cone. The top of the first-stage rotor is connected to the air outlet, and the upper part of the second-stage rotor is connected to the diversion cone. The cone top of the diversion cone is provided with an opening that communicates with the air outlet; there is a medium-coarse powder feeding cone between the first-stage rotor and the guide vane, and a medium-coarse powder feeding cone and the second-stage rotor. The conical air guide ring, the air outlet of the conical air guide ring is connected with the swirl air inlet pipe, and the medium and coarse powder feeding cone is provided with a medium and coarse powder discharge port at the bottom.

The vortex classifier is characterized in that: the upper part of the medium and coarse powder feeding cone is a conical ring structure, which is convenient for the secondary rotor to enter the air from the gap of the conical air guide ring, and at the same time, it can classify the primary rotor. Coarse powder enters the conical air guide ring, is lifted up by the air in the gap of the conical air guide ring, and participates in the reclassification of the secondary rotor.

As a preferred solution, the vortex classifier is characterized in that: the swirl air inlet pipe is provided with a tuyere opening adjustment device.

As a preferred solution, the vortex classifier is characterized in that: the opening of the guide cone is provided with a tuyere opening adjustment device.

The eddy current classifier is characterized in that it also includes a main shaft motor and a reducer, and the main shaft motor is connected to the main shaft through the reducer.

As a preferred solution, the eddy current classifier is characterized in that it further includes a transmission support, the main shaft motor and the reducer are fixedly installed on the transmission support, and the main shaft passes through the transmission support.

Beneficial effects: the eddy current classifier provided by the utility model adopts the air inlet from the bottom, combined with the eddy current supplementary air mode on both sides of the casing, the air supply port is provided with a louver to adjust the air valve, and the air outlet is in the middle of the upper end of the casing; the middle of the casing is provided with a The main shaft is connected with the primary and secondary rotors. The primary rotor adopts a straight cage structure, and the secondary rotor adopts a conical cage structure. The air outlet of the secondary rotor is opened by the cone of the diversion cone in the primary rotor. There is an air outlet, and the air outlet has an adjustment device for the opening of the air outlet; the upper part of the medium and coarse powder conical feeding shell adopts a conical ring structure, which is convenient for the second-stage rotor to enter the air from the ring gap, and at the same time can move the first-stage rotor When the graded coarse powder enters the conical ring, it is lifted up by the air in the ring gap and participates in the reclassification of the secondary rotor. The utility model has the advantages of high classification precision, greatly improved sorting efficiency, compact structure, convenient adjustment and low energy consumption. Through multiple classifications of powder materials, the centrifugal gravity field generated by the rotating air flow is used to carry out preliminary classification of powder materials. Under the action of centrifugal force, the larger particles are first captured and separated by the side wall effect of the casing to separate the coarse powder. . The material after primary classification enters the vortex force field between the primary rotor and the guide vane for secondary classification. Finally, after the secondary classification, the three classifications are completed under the action of the rotating force field. Through the above technical measures, the shape of the current low classification efficiency of the powder separator is solved, and a technical solution is provided for the enterprise to save energy and reduce consumption, and improve economic benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is A-A sectional view among Fig. 1;

Fig. 3 is a sectional view of diversion cone B-B in Fig. 1;

Figure 4 is an enlarged view at C in Figure 1;

In the figure: In the figure: main shaft motor 1, reducer 2, transmission support 3, main shaft 4, air outlet 5, guide vane 6, primary rotor 7, housing 8, diversion cone 9, feed pipe 10, secondary Rotor 11, swirl air inlet pipe 12, conical air guiding ring 13, medium and coarse powder feeding cone 14, material spreading blade 15, coarse powder discharge port 16, medium and coarse powder discharge port 17, air inlet 18.

detailed description

Below in conjunction with specific embodiment the utility model is described further.

As shown in Figures 1 to 4, a vortex classifier includes a housing 8, a main shaft 4, a material spreading vane 15, a guide vane 6, a primary rotor 7, a secondary rotor 11, a feed pipe 10, and the bottom of the housing An air inlet 18 and a coarse powder outlet 16 are set, a swirl air inlet pipe 12 is arranged in the middle of the housing, a main shaft 4 is arranged in a vertical direction in the housing 8, the spreading blade 15 is connected to the bottom end of the main shaft 4, and the feeding pipe The outlet of 10 is located above the spreading blade 15, the middle part of the main shaft is connected with the primary rotor 7 and the secondary rotor 11, the primary rotor is a straight cage structure, the secondary rotor is a conical cage structure, and the guide vanes 6 are set on the primary rotor. 7, the first-stage rotor 7 is provided with a diversion cone 9, the top of the first-stage rotor 7 communicates with the air outlet 5, the upper part of the second-stage rotor communicates with the diversion cone 9, and the top of the diversion cone 9 is provided with An opening connected to the air outlet 5; a medium-coarse powder feeding cone 14 is arranged between the first-stage rotor 7 and the guide blade 6, and a conical air guide ring is provided between the medium-coarse powder feeding cone and the second-stage rotor 11 13. The tuyeres of the conical air guide ring 13 are connected with the swirl air inlet pipe 12, and the bottom of the middle and coarse powder feeding cone is provided with a middle and coarse powder discharge port 17.

As a preferred solution, the upper part of the medium and coarse powder feeding cone 14 is a conical ring structure, which is convenient for the secondary rotor to enter the air from the gap of the conical air guide ring 13, and at the same time, the coarse powder that can be classified by the primary rotor enters the cone. Shaped air guide ring 13 is raised under the action of the air intake in the gap of conical air guide ring 13, and participates in the reclassification of the secondary rotor.

The swirl air inlet pipe 12 is provided with a tuyere opening adjustment device.

The opening of the guide cone 9 is provided with a tuyere opening adjustment device.

The eddy current classifier also includes a main shaft motor 1 , a reducer 2 , and a transmission support 3 , and the main shaft motor 1 is connected to the main shaft 4 through the reducer 2 . The main shaft motor 1 and the reducer 2 are fixedly installed on the transmission support 3, and the main shaft 4 passes through the transmission support 3.

The working process of the utility model is as follows: the powder material enters the machine from the feed port 10, is thrown by the spreading blade 15 connected to the main shaft 4, and the material enters the air flow mixed with the air inlet 18 and then flows from bottom to top and enters the central circulation. In the supplementary air area, the circulating air formed by the swirling air inlet pipe 12 is initially classified, and the larger powder particles are under the action of centrifugal force, and the coarse powder that is initially separated is discharged from the machine through the coarse powder discharge port 16, and the powder after the primary classification The solid air flow enters the upper part of the housing 8, and the upper part of the housing 8 is provided with guide vanes 6 and a first-stage rotor 7. Under the action of the eddy current force field, the secondary classification is carried out, and the fine powder enters the first-stage rotor 7 with the air flow and is discharged from the air outlet 5. Outside the machine, the rest of the powder enters the medium and coarse powder feeding cone 14 between the guide vane 6 and the primary rotor 7, passes through the conical air guide ring 13, and the airflow coming in from the ring gap is raised again, and the fine powder is classified three times. The secondary rotor 11 captures and discharges out of the machine through the diversion cone 9 together with the fine powder classified by the primary rotor 7. The medium and coarse powder is discharged out of the machine through the conical feeding tube under the action of gravity through the medium and coarse powder outlet 17.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (6)

1. A vortex classifier, comprising a housing, a main shaft, a spreading vane, a guide vane, a first-stage rotor, a second-stage rotor, and a feed pipe, characterized in that: the bottom of the housing is provided with an air inlet and a coarse powder outlet , the middle part of the housing is provided with a swirl air inlet pipe, the spreading blade is connected to the bottom of the main shaft, the outlet of the feeding pipe is located above the spreading blade, the middle part of the main shaft is connected with a primary rotor and a secondary rotor, and the primary rotor is a straight cage structure, the second-stage rotor is a tapered cage structure, the guide vanes are set outside the first-stage rotor, and the first-stage rotor is provided with a diversion cone, the top of the first-stage rotor is connected to the air outlet, and the upper part of the second-stage rotor is connected to the guide The cones are connected, and the cone top of the diversion cone is provided with an opening that communicates with the air outlet; a medium-coarse powder feeding cone is arranged between the first-stage rotor and the guide vane, and a middle-coarse powder feeding cone is installed between the medium-coarse powder feeding cone and the second-stage rotor. A conical air guide ring is provided, and a medium and coarse powder discharge port is provided at the bottom of the medium and coarse powder feeding cone. 2. The eddy current classifier according to claim 1, characterized in that: the upper part of the middle and coarse powder feeding cone is a conical ring structure, which is convenient for the secondary rotor to enter the air from the gap of the conical air guide ring, and at the same time it can The coarse powder classified by the primary rotor enters the conical air guide ring, and is lifted up by the air intake in the gap of the conical air guide ring, and participates in the reclassification of the secondary rotor. 3. The vortex classifier according to claim 1, characterized in that: the swirl air inlet pipe is provided with a tuyere opening adjustment device. 4. The vortex classifier according to claim 1, characterized in that: the opening of the guide cone is provided with a tuyere opening adjustment device. 5. The eddy current classifier according to claim 1, characterized in that it further comprises a main shaft motor and a reducer, and the main shaft motor is connected to the main shaft through a reducer. 6. The eddy current classifier according to claim 5, further comprising a transmission support, the main shaft motor and the reducer are fixedly installed on the transmission support, and the main shaft passes through the transmission support.