CN201147754Y - Material pneumatic classification device - Google Patents

Abstract

The utility model relates to a material pneumatic grading device, which is characterized in that the device includes the following structures: a horizontal lifting chamber with a coarse material discharge port and a fine material discharge port at the bottom, and a coarse material discharge port in the lifting chamber. Connected coarse material lower hopper; material lower hopper connected with the fine material discharge port of the lifting cavity, a receiver on the upper cover of the fine material lower hopper, and a feeding pipe and material passing through the side of the lifting cavity Spray nozzle on the end of the tube. The utility model realizes the material screening by adjusting the length of the nozzle extending into the material bin, and its power source is the wind force when the material is transported. The pneumatic screening device with the above structure is easy to use, energy-saving, good in separation, and the ratio of coarse and fine separation is adjustable.

Description

Material pneumatic classification device

technical field

The material pneumatic grading device relates to a material grading device in the powder material pneumatic conveying industry, and is suitable for the powder material conveying and separation process of copper, nickel and other heavy non-ferrous metallurgical fields where the water content of ore powder is less than 0.3%.

Background technique

Traditional material separation generally uses steel wire mesh or vibrating screen, but due to the high wind pressure during pneumatic conveying, the screen surface wears quickly and the spare parts consumption is large. Moreover, the traditional vibrating screen needs a motor as power, consumes energy, and has complicated equipment.

Contents of the invention

The purpose of this utility model is to provide a material pneumatic classification device with simple equipment, low consumption of spare parts and power, and utilizing pneumatic conveying wind pressure for classification.

The purpose of this utility model is achieved through the following technical solutions.

The material pneumatic classification device is characterized in that the structure of the device includes:

Horizontal lifting chamber - the horizontal lifting chamber is a large-diameter horizontal pipe closed on both sides; a through hole is opened on the vertical sealing plate at one end of the pipe, and a coarse material bottom is opened at the lower part of the lifting pipe near the through hole. There is a discharge port for fine materials at the lower part of the other end of the lifting pipe; a guide cone with an inclined surface is provided between the discharge ports for coarse materials and fine materials;

Coarse material discharge hopper--the discharge hopper is a conical bucket, the upper edge of the bucket is connected with the coarse material discharge port of the horizontal lifting cavity; the discharge pipe is fixedly connected to the bottom of the discharge hopper, and the discharge pipe is provided valve;

Fine material lower hopper--the lower hopper is a conical bucket with a horizontal cover plate; an air outlet is opened in the center of the cover plate, and the edge of the lower material hole is opened on the edge of the cover plate and the fine material bottom of the horizontal lifting chamber The edge of the material port is fixedly connected; a discharge valve plate is provided on the discharge port at the cone bottom of the lower hopper;

Dust collector—the dust collector is a bag dust collector, and its air inlet is connected to the air outlet opened in the center of the lower hopper cover for fine materials;

Pneumatic material conveying pipe - the conveying pipe is a conveying pipe powered by wind. The material pipe passes through the side wall of the horizontal lifting chamber, and a trumpet-shaped spray nozzle with an enlarged diameter is fixed on the end of the discharge port of the pipe. Located in the lifting chamber.

The utility model realizes the material screening by adjusting the length of the nozzle extending into the material bin, and its power source is the wind force when the material is transported. Easy to use, energy saving, good separation, adjustable ratio of coarse and fine separation. Easy to use, energy saving, good separation, adjustable ratio of coarse and fine separation.

Description of drawings

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

Detailed ways

Material pneumatic classification device, the device includes the following structures:

Horizontal lifting chamber 1—the horizontal lifting chamber is a large-diameter horizontal pipe closed on both sides; a through hole is opened on the vertical sealing plate at one end of the pipe, and a coarse material is opened at the lower part of the lifting pipe near the through hole. A discharge port, a fine material discharge port is opened at the lower part of the other end of the lifting pipe; a guide cone 2 with an inclined surface is provided between the coarse material and fine material discharge ports;

Coarse material lower hopper 3--the lower hopper is a conical bucket, the upper edge of the bucket is connected with the coarse material discharge port of the horizontal lifting cavity; Feed valve 4;

Fine material lower hopper 5--the lower hopper is a conical bucket with a horizontal cover plate; an air outlet is opened in the center of the cover plate, and the edge of the lower material hole and the horizontal lifting chamber for fine material are opened on the edge of the cover plate. The edge of the discharge port is fixedly connected; a discharge valve plate 6 is provided on the discharge port at the cone bottom of the discharge hopper;

Dust collector 7—the dust collector is a bag dust collector, and its air inlet is connected to the air outlet opened in the center of the lower hopper cover plate of fine materials;

Pneumatic material conveying pipe 8—the conveying pipe is a conveying pipe powered by wind. The material pipe passes through the side wall of the horizontal lifting chamber, and a trumpet-shaped spray nozzle with an enlarged diameter is fixed on the end of the discharge port of the pipe. 9. Located in the lifting cavity.

The inner diameter of the spray head of the material nozzle of the utility model is 2 times larger than that of the conveying pipeline, so that the material can be well diffused when sprayed. The length of the lifting cavity should be greater than the horizontal injection range of the material at the outlet of the nozzle. When the material is sprayed through the bin pump and the feeding pipe through the nozzle, the power of material screening comes from the air or nitrogen when the bin pump blows the material. The difference in spraying speed and material specific gravity in the horizontal direction and vertical direction realizes automatic screening, the material with smaller particle size falls into the coarse silo, the fine powder is sprayed into the concentrate silo, and the flying dust generated in the silo is collected After the bag is laid, it falls into the silo, and the filtered clean gas is discharged into the atmosphere by the fan on the bag, so that the gas can be discharged quickly and the pressure of the gas in the silo can be reduced.

Claims (1)

1. Material pneumatic grading device, characterized in that the device includes the following structures: Horizontal lifting chamber - the horizontal lifting chamber is a large-diameter horizontal pipe closed on both sides; a through hole is opened on the vertical sealing plate at one end of the pipe, and a coarse material bottom is opened at the lower part of the lifting pipe near the through hole. There is a discharge port for fine materials at the lower part of the other end of the lifting pipe; a guide cone with an inclined surface is provided between the discharge ports for coarse materials and fine materials; Coarse material discharge hopper--the discharge hopper is a conical bucket, the upper edge of the bucket is connected with the coarse material discharge opening of the horizontal lifting cavity; the discharge pipe is fixedly connected to the cone bottom of the discharge hopper, and there is a discharge Valve; fine material hopper--the lower hopper is a conical bucket with a horizontal cover plate; an air outlet is opened in the center of the cover plate, and the edge of the lower material hole is opened on the edge of the cover plate. The edge of the material discharge port is matched and fixed; a discharge valve plate is provided on the discharge port at the cone bottom of the discharge hopper; Dust collector - the dust collector is a bag dust collector, and its air inlet is connected to the air outlet opened in the center of the lower hopper cover plate of fine materials; Pneumatic material conveying pipe - the conveying pipe is a conveying pipe powered by wind. The material pipe passes through the side wall of the horizontal lifting chamber, and a trumpet-shaped nozzle with an enlarged diameter is fixed on the end of the discharge port of the pipe. Located in the lifting chamber.

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