CN201613187U - A spheroidizing classifier for producing spherical graphite - Google Patents

Abstract

A spheroidizing classifier for producing spherical graphite, which relates to a classifier, including a bracket and a motor. The spheroidizing classifier is mainly composed of a material separation chamber, a material movement chamber and a product collection chamber. The material separation chamber and the material movement chamber It is connected in series with the product collection room, and its interior is connected, and gradually becomes smaller in sequence; a material separator and a dust discharge tube are arranged horizontally in the material separation room, and the material separator is connected with the dust discharge tube; in the material movement room, it is connected with the product collection room There is a secondary wind cyclone body between the chambers, the primary air inlet is set on one side of the product collection chamber, and the finished product discharge port is set at the bottom of the product collection chamber. Beneficial effects: the combination of secondary spheroidization and classification of products is realized; the classification accuracy and classification efficiency are improved, automatic control is realized, the operation is convenient, the cost is reduced, and the service life is long.

Description

A spheroidizing classifier for producing spherical graphite

technical field

The utility model relates to a classifier, in particular to a spheroidizing classifier for producing spherical graphite.

Background technique

The classifier in graphite preparation is mainly to re-spheroidize and classify the graphite powder after particle refinement and spheroidization in real time according to the specifications of graphite powder. Separation accuracy directly affects the quality of the product. At present, most of the separation devices of the classifiers sold on the market are set on the top of the separator, and the separation cylinder and the recovery cylinder are a cylinder, lacking the secondary air inlet and cyclone body system, and the effect of secondary spheroidization cannot be achieved. The accuracy is poor; especially the setting of the classifying impeller and the dust discharge cylinder is unreasonable, which may easily cause the blockage of the connection between the classifying impeller and the dust discharge cylinder, which affects the speed of the classifying wheel; the existing technology still has secondary spheroidization and classification , the lack of a secondary cyclone process, so that the graphite powder is directly discharged or collected after one entry, and the mixed fine particles are also discharged together, the classification efficiency is low, the particle size distribution is wide, and it is difficult to produce qualified products. In the prior art, there are also technical problems such as poor wear resistance of the grading wheel, low service life, easy wear, high noise, unstable operation, low degree of automation, high cost and low yield.

Contents of the invention

The purpose of this utility model is to solve the deficiencies of the prior art, realize the combination of secondary spheroidization and classification of products, improve the mechanism connection of the separation chamber, the material movement chamber, the cyclone body and the recovery device, and realize the improvement of classification accuracy and classification efficiency. Improvement, automatic control, easy operation, cost reduction and long service life.

The technical scheme adopted by the utility model to solve the above technical problems is: a spheroidizing classifier for producing spherical graphite, including a bracket and a motor, the spheroidizing classifier is mainly composed of a material separation chamber, a material movement chamber and a product collection chamber Composition, the material separation chamber, the material movement chamber and the product collection chamber are connected in series, and the insides are connected, and gradually become smaller in order; the material separator and the dust discharge cylinder are horizontally arranged in the material separation chamber, and the material separator and the dust discharge cylinder Docking; there is a secondary wind cyclone body between the material movement room and the product collection room, the primary air inlet is set on one side of the product collection room, and the finished product discharge port is set at the bottom of the product collection room.

In the utility model, the product collection chamber is also provided with a material discharge controller.

In the present utility model, the secondary wind cyclone body is further provided with a secondary air inlet.

In the utility model, the material separator is composed of an impeller and a rotating shaft, and the rotating shaft is connected with a motor.

In the present utility model, the impeller is composed of at least seventy blades. The blade is a long strip, and the blade is arranged around the rotating shaft in a squirrel-cage shape. The blade is made of an aluminum-titanium alloy material, which enhances wear resistance and improves service life.

In the utility model, the motor adopts a variable frequency motor, which can better control the speed of the motor. The material separation chamber, the material movement chamber and the product collection chamber are sequentially connected in series, and their interiors are connected and gradually become smaller in sequence. This facilitates the transportation and collection of materials.

In the utility model, the dust discharge cylinder is in the shape of a cylinder and is provided as an interlayer. The interlayer is provided with an air inlet, a control valve and an air duct for the dust discharge cylinder. The interlayer can be used as the interface of the material separator and as the material For the sealing groove of the separator, the interlayer at the joint is in a concave shape. On the interlayer at the joint between the dust discharge cylinder and the material separator, there is a circle of small holes along the circumferential direction at the center of the depression, so that the air duct of the dust discharge cylinder is smooth. The air can be blown to the docking port through the small hole, and then the dust at the junction of the separator and the dust discharge cylinder can be cleaned. The dust discharge cylinder is integrally connected with the air inlet, which improves the sealing of the dust discharge cylinder.

In the utility model, the material separator is a semi-open classification wheel, and its rotating shaft is directly connected to the motor, so that it is easier to control the rotating speed of the rotating shaft through the frequency conversion motor; the material separator is docked with the dust discharge cylinder, It means that one end of the material separator is set in the interlayer of the dust discharge tube. The impeller frame at the sleeve end of the material separator is a kind of fixed ring, and the fixed ring is a ring shape. The size between the inner ring and the outer ring is suitable for Set in the interlayer of the dust discharge cylinder, it can realize the connection between the classification wheel and the dust discharge cylinder, without hindering the rotation of the classification wheel, and at the same time, it does not prevent the dust discharge cylinder from sucking out the fine powder hovering in the classification wheel. The classification wheel adopts Aluminum-titanium alloy material, wear-resistant, low noise, stable operation.

In the utility model, the material discharge controller is a kind of air lock, which is composed of a motor, an impeller and a closed cover. At the finished product discharge outlet of the product collection room working on the bottom, the materials in the product collection room are transported through the impeller in the air shutoff device, and the air shutoff device is also responsible for the sealing function to prevent the finished product from being transported by the air flow The discharge port sucks in air to ensure the normal discharge of the product collection chamber.

In the utility model, the secondary wind whirlwind body is cylindrical, and the cylinder is horizontally arranged between the material movement chamber and the product collection chamber. One end of the cylinder is provided with a secondary air inlet and a secondary air inlet valve. The setting of the cyclone body provides the airflow power for the falling materials to be transported to the classifying wheel again after classification, thus increasing the time and movement period of the vortex movement of graphite particles in the classifier.

The beneficial effects of the utility model are:

The material separation chamber, the material movement chamber and the product collection chamber are connected in series, and gradually become smaller in sequence. A secondary wind cyclone body is installed between the material movement chamber and the product collection chamber, which effectively controls the graphite powder from being carried out in the classifier. The time and cycle of vortex movement; the horizontal connection between the material separator and the dust discharge cylinder greatly improves the speed of spheroidization and separation, and there is a dust discharge cylinder air duct for cleaning dust in the interlayer of the dust discharge cylinder to ensure The graphite dust will never stop at the connection end of the material separator and the dust discharge cylinder; the application of the frequency conversion motor realizes automatic control, the machine is small in size, simple and compact in structure, and easy to operate. The utility model can improve the product by 50 %-80%, reduce energy consumption by more than 30%, can control dust emission and zero pollution, and reduce production costs by more than 60%.

Description of drawings

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

The marks in the figure are: 1. bracket, 2. frequency conversion motor, 3. material separation room, 4. material movement room, 5. product collection room, 6. material separator, 7. dust discharge cylinder, 8. finished product discharge port, 9. Primary air inlet, 10. Material discharge controller, 11. Secondary wind cyclone body, 12. Impeller, 13. Rotary shaft, 14. Dust discharge tube air duct, 15. Secondary air inlet of cyclone body.

Detailed ways

As shown in Figure 1, the classifier is provided with a material separation chamber 3, a material movement chamber 4, a product collection chamber 5, and a finished product discharge port 8 from top to bottom. Connected in series to the bottom, and gradually become smaller in sequence, a material separator 6 is horizontally arranged in the material separation chamber 3. The material separator 6 is composed of an impeller 12 and a rotating shaft 13. One end of the rotating shaft 13 is connected to the motor 2, and the other end is connected to the dust collector. The discharge cylinder 7 adopts butt joint connection, and a material discharge controller 10 is provided above the finished product discharge port 8 at the bottom of the product collection chamber 5, and a bracket 1 is provided between the material discharge controller 10 and the finished product discharge port 8. A primary air inlet 9 is provided above the material discharge controller 10 , and a secondary air inlet 15 of a cyclone body is provided between the material movement chamber 4 and the product collection chamber 5 .

The graphite powder in the air-flow vortex spheroidizer enters the product collection chamber 5 from the primary air inlet 9 along with the air flow, and the air-flow vortex spheroidizer can be a QWJ-30 type air-flow vortex micronizer, once The air inlet acts on the material as a primary air sieve, so that the particles are fully dispersed before they rise to the material separation chamber 3; Centrifugal force, the gas-powder mixture entering the material separation chamber 3 first enters the material separator 6, under the action of centrifugal force, large or heavy particles are subject to strong centrifugal force, so they are thrown to the periphery of the material separator 6 to separate the materials On the side wall of chamber 3, open the secondary air inlet 15 of the cyclone body on the secondary wind cyclone body 11 to allow the secondary air intake in the classifier. The secondary air intake valve controls the size of the secondary air intake. If the secondary air intake is large, graphite The dispersion of the powder in the material separation chamber 3 is good, and the classification effect is better. The external secondary air is rectified into a uniform swirl through the material movement chamber 4, and the fine particles mixed or attached to the large or heavy particles are separated cleanly. After separation, the large or heavy particles are no longer affected by the centrifugal force, and under the action of the material discharge controller 10, the large or heavy particles fall to the finished product discharge port 8 for collection; the small or light graphite powder is less affected by the centrifugal force, The material separator 6 hovers inside, and the small or light graphite powder is brought to the dust discharge cylinder 7 by the induced wind force of the induced draft fan, and moves along the induced air outlet to the cyclone separator of the next component to be separated or collected, and passed through the frequency conversion motor 2 By adjusting the rotational speed of the rotating shaft 13, the centrifugal force in the material separation tank 1 can be adjusted to achieve the purpose of separating materials with a specified particle size.

The speed of the classifier turbine is 1600 revolutions per second, and the maximum can reach 6000 revolutions per second, and the motor speed is adjusted according to the fineness requirements of the graded finished product.

The utility model can improve products by 50%-80%, reduce energy consumption by more than 30%, can control dust emission and zero pollution, and reduce production costs by more than 60%.

When there is dust at the joint between the material separator 6 and the dust discharge cylinder 7, the air inlet on the dust discharge cylinder 7 is opened, and the wind passes through the interlayer of the dust discharge cylinder 7, that is, the dust discharge cylinder air duct 14, and the dust in the interlayer is blown down to In the material separation chamber 3, the wind that enters is sucked out of the classifier by the induced wind force, and flows to the cyclone separator of the next classifying equipment.

Claims (6)

1. nodularization grader that is used to produce spherical graphite, comprise support (1) and motor (2), it is characterized in that: the nodularization grader mainly is made up of feed separation chamber (3), material movement chamber (4) and product collecting chamber (5), feed separation chamber (3), material movement chamber (4) and product collecting chamber (5) order serial connection, its inside communicates, and diminishes gradually in regular turn; Level is provided with material separator (6) and dust emission tube (7) in feed separation chamber (3), and material separator (6) docks with dust emission tube (7); Be provided with secondary wind cyclone body (11) between material movement chamber (4) and product collecting chamber (5), an air intake charging aperture (9) is arranged on a side of product collecting chamber (5), and finished product outlet (8) is arranged on the bottom of product collecting chamber (5).

2. a kind of nodularization grader that is used to produce spherical graphite according to claim 1 is characterized in that: on the described product collecting chamber (5), also be provided with material emission control device (10).

3. a kind of nodularization grader that is used to produce spherical graphite according to claim 1 is characterized in that: on the described secondary wind cyclone body (11), also be provided with secondary air mouth (15).

4. a kind of nodularization grader that is used to produce spherical graphite according to claim 1 is characterized in that: described material separator (6), to form by impeller (12) and rotating shaft (13), and rotating shaft (13) is connected with motor (2).

5. a kind of nodularization grader that is used to produce spherical graphite according to claim 4 is characterized in that: described impeller (12) is made of 70 blades at least.

6. a kind of nodularization grader that is used to produce spherical graphite according to claim 1 is characterized in that: described dust emission tube (7), be the interlayer setting, and be provided with dust emission tube air channel (14) in its interlayer.

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