CN209423798U - A kind of airslide disintegrating mill - Google Patents

Abstract

The utility model relates to the field of boron carbide production equipment, in particular to an air flow pulverizer, which comprises a feeding mechanism and a crushing mechanism. The feeding mechanism comprises a feeding hopper and a hoist. The outlet of the crusher is connected with the inlet of the crushing mechanism. The crushing mechanism includes a feeding bin and a crushing chamber. The inlet of the crushing mechanism is set on one side of the feeding bin, and the other side of the feeding bin is provided with a dust removal mechanism. The pulverizing chamber is arranged at the lower end of the feeding bin. The high-pressure air inlets are evenly distributed on the side wall of the pulverizing chamber. The direction of the high-pressure air inlet is tangent to the side wall of the pulverizing chamber. The outlet is connected to the screening machine, and the screening machine is provided with a finished product outlet and a coarse material outlet. The jet mill has good crushing effect on powder particles, more uniform crushing, less dust in the workplace, higher yield of finished products, less waste, and the crushing chamber of the crusher is easy to clean and has strong practicability.

Description

a jet mill

technical field

The utility model relates to the field of boron carbide production equipment, in particular to an air flow pulverizer.

Background technique

Boron carbide, also known as black diamond, has a molecular formula of B4C and is usually a gray-black micropowder. It is one of the three hardest known materials (the other two are diamond and cubic boron nitride) because of its low density, high strength, high temperature stability and good chemical stability. It is used in wear-resistant materials, ceramic reinforced phases, especially in lightweight armor, reactor neutron absorbers, etc. In the production process of boron carbide, granular materials need to be pulverized. The existing pulverizer has poor pulverization effect and low pulverization efficiency, and the workplace of the pulverizer has a lot of dust, resulting in a low yield of pulverized products. The particle size of the powder after being pulverized by the pulverizer is inconsistent, and the cleaning inside the pulverizer is difficult.

Utility model content

Aiming at the defects of the prior art, such as poor pulverizing effect of pulverizers, large difference in particle size of pulverized powder particles, large amount of dust and inconvenient cleaning, a jet pulverizer is provided, which has good pulverizing effect on powder particles, More uniform, less dust in the workplace, higher yield of finished products, less waste, and the crushing chamber of the crusher is easy to clean and has strong practicability.

The technical scheme of the utility model is realized as follows: an air flow pulverizer includes a feeding mechanism and a crushing mechanism, the feeding mechanism includes a feeding hopper and an elevator, and the outlet at the lower end of the feeding hopper and the entrance of the elevator are connection, the outlet of the elevator is connected with the inlet of the crushing mechanism, the crushing mechanism includes a feeding bin and a crushing chamber, the inlet of the crushing mechanism is arranged on one side of the feeding bin, and the other side of the feeding bin is close to the A dust removal mechanism is arranged at the upper position, the pulverizing chamber is arranged at the lower end of the feeding bin, and high-pressure air inlets are evenly distributed on the side wall of the pulverizing chamber, and the direction of the high-pressure air inlet is tangential to the side wall of the pulverizing chamber, The tangential direction of the adjacent high-pressure air inlet and the side wall of the crushing chamber is opposite. connected, the screening machine is provided with a finished product outlet and a coarse material outlet.

Preferably, the dust removal mechanism is connected to the feed bin through an induced draft fan.

Preferably, the upper end of the pulverizing chamber is provided with a spray head near the side wall, the spray head is connected with the circulating water channel, and the side wall of the lower end of the pulverizing chamber is also provided with a water outlet.

Preferably, the lower end of the spinning disc is provided with a rotating shaft, and the rotating shaft is driven to rotate by a drive motor.

Preferably, the screening machine is provided with a screen, the upper end of the screening machine is communicated with the outlet of the crushing chamber, the coarse material outlet is located at the upper position of the screen, and the coarse material outlet passes through a pipeline It is connected with the coarse silo, and the coarse silo is connected with the feed hopper through the air conveying device.

Preferably, the air conveying device comprises an air conveying pipe and a pipe feeding port, one end of the air conveying pipe is connected with the worm gear fan, and the other end is connected with the feeding hopper, and the pipe feeding port is arranged on the side of the air conveying pipe The upper end of the feeding hopper is a cylinder, the air supply pipe is arranged tangentially to the side wall of the cylindrical body of the feeding hopper, and the top surface of the feeding hopper is provided with an air inlet, so The air inlet is provided with a dust filter.

Preferably, the finished product outlet is provided with the lower end of the screening machine, and the finished product outlet is communicated with the finished product warehouse through a pipeline.

The utility model has the following advantages: the utility model discloses a jet mill, which has a novel structure and a reasonable design. The dust removal mechanism for dust collection, the high pressure impact on the powder particles is carried out through the high pressure air inlet in the crushing mechanism, and the powder particles collide with the inner wall of the crushing chamber through the shear force, so that the powder particles are crushed, and the particles that sink to the bottom pass through The spinner can rotate upwards to promote the contact between the high-pressure gas and the particles. The pulverized powder enters the screening machine for screening, and the larger particles enter the feeding hopper through the air conveying device to be pulverized again, so that the particle size of the finished product is uniform. It is convenient and simple to clean the pulverizing chamber through the nozzle, and reduces the dust that occurs during cleaning, and the cleaned water can still recover the particles after filtering, which has strong practicability.

Description of drawings

FIG. 1 is a front view of the utility model.

FIG. 2 is a top view of the pulverizing chamber of the present invention.

3 is a top view of the feed hopper of the present invention.

In the picture: 1-feed hopper, 2-elevator, 3-feed bin, 4-grinding chamber, 5-dust removal mechanism, 6-draught fan, 7-spray head, 8-circulating waterway, 9-water outlet, 10 - High pressure air inlet, 11- Spinning disc, 12- Spindle, 13- Discharge port, 14- Screening machine, 15- Finished product outlet, 16- Coarse material outlet, 17- Screen mesh, 18- Coarse material bin, 19 -Air supply pipe, 20-pipe feed inlet, 21-worm gear fan, 22-air inlet, 23-dust net, 24-finished product warehouse.

Detailed ways

The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

Example 1: A jet mill, as shown in Figures 1-3, includes a feeding mechanism and a crushing mechanism, the feeding mechanism includes a feeding hopper 1 and an elevator 2, and the outlet at the lower end of the feeding hopper 1 is connected to the elevator 2. The inlet is connected, the outlet of the elevator 2 is connected with the inlet of the crushing mechanism, the material in the feeding hopper 1 is transported to the crushing mechanism through the elevator 2, and the crushing mechanism includes the feeding bin 3 and the crushing chamber 4, and the inlet of the crushing mechanism is set at One side of the feeding bin 3 and the other side of the feeding bin 3 are provided with a dust removal mechanism 5. The dust removal mechanism 5 is connected to the feeding bin 3 through the induced draft fan 6. The powder is attracted by the induced draft fan 6 into the dust removal mechanism 5 for collection, so as to avoid a lot of dust in the workplace and improve the yield. The crushing chamber 4 is arranged at the lower end of the feeding bin 3, so that the material in the feeding bin 3 enters the crushing chamber 4. The upper end of the crushing chamber 4 is provided with a nozzle 7 near the side wall, and the nozzle 7 is connected with the circulating water channel 8. The lower end sidewall of 4 is also provided with a water outlet 9. The water in the water tank of the circulating water channel 8 is connected to the nozzle 7 through a water pump, and the water sprayed by the nozzle 7 cleans the crushing chamber 4, which makes cleaning convenient and avoids the occurrence of more serious problems during cleaning. large dust. There are high pressure air inlets 10 evenly distributed on the side wall of the pulverizing chamber 4, the direction of the high pressure air inlet 10 is tangent to the side wall of the pulverizing chamber 4, and the tangent direction of the adjacent high pressure air inlet 10 and the side wall of the pulverizing chamber 4 is opposite, The impact direction of the high-pressure air inlet 10 on the powder particles is crossed, so as to promote the collision of the powder particles, so that the crushing effect of the particles is better. The bottom of the crushing chamber 4 is provided with a spinner 11, and the lower end of the spinner 11 is provided with a rotating shaft 12. The rotating shaft 12 is driven to rotate by a driving motor. The cross-section of the spinner 11 is arc-shaped. The particles on the spinner 11 are swung upwards, facilitating the contact of the larger particles settled on the spinner 11 with the high pressure gas. The lower end of the side wall of the pulverizing chamber 4 is a discharge port 13, and the discharge port 13 is connected with a screening machine 14, and the screening machine 14 is provided with a finished product outlet 15 and a coarse material outlet 16. The screening machine 14 is provided with a screen 17, the screen 17 is an inclined screen, and a vibration motor is arranged on the screen 17 to promote the screening of the screen 17. Connected, the pulverized materials in the pulverizer 4 enter the sieve 14, after being filtered by the screen 17, the small particles fall into the lower part of the screen through the screen 17, and enter the finished product warehouse 24 through the finished product outlet 15, and the large particles stay On the screen 17, the coarse material outlet 16 is located at the upper position of the screen 17, the material with larger particles is discharged through the coarse material outlet 16, and the coarse material outlet 16 is connected to the coarse material bin 18 through a pipeline. The coarse silo 18 is connected with the feeding hopper 1 through an air blowing device. The air conveying device includes an air conveying pipe 19 and a pipe feeding port 20. One end of the air conveying pipe 19 is connected to the worm gear fan 21, and the other end is connected to the feeding hopper 1. The pipe feeding port 20 is arranged on the side wall of the air conveying pipe 19 and is Near the worm gear fan 21, the material is transported along the air supply pipeline 19 by the Venturi principle. The material in the coarse silo 18 is connected to the pipeline feed port 20 through the pipeline. The upper end of the feed hopper 1 is a cylinder, and the air supply pipeline 19 is set tangent to the side wall of the cylinder of the feeding hopper 1, so that the material enters the feeding hopper 1 and then spirals down along the inner wall of the feeding hopper 1, so as to prevent the material from colliding with the inner wall of the feeding hopper 1 and damaging the inner wall. The top surface of the hopper 1 is provided with an air inlet 22, and the air inlet 22 is provided with a dustproof net 23. After the air is fed into the air inlet 22, the speed of the material entering the feeding hopper 1 can be reduced, so as to prevent the material from splashing everywhere, and the dustproof net 23 The number of meshes is large, which can prevent dust from overflowing. The finished product outlet 15 is provided with the lower end of the screening machine 14, and the finished product outlet 15 is communicated with the finished product warehouse 24 through a pipeline.

Claims (7)

1. a kind of airslide disintegrating mill, including feeding mechanism and crushing mechanism, it is characterised in that: the feeding mechanism includes feed hopper And elevator, the lower end of hopper outlet are connect with the entrance of elevator, the outlet of the elevator and entering for crushing mechanism Mouth connection, the crushing mechanism includes feeding warehouse and pulverizing chamber, and the side of feeding warehouse is arranged in the entrance of the crushing mechanism, into The other side upper position of feed bin is provided with dedusting mechanism, and the lower end of feeding warehouse, the pulverizing chamber side is arranged in the pulverizing chamber High pressure admission mouth, the direction of the high pressure admission mouth tangent, adjacent high pressure admission mouth with pulverizing chamber side wall are evenly distributed on wall On the contrary, the bottom of the pulverizing chamber is provided with throwing disc, the side wall lower ends of the pulverizing chamber are direction tangential with pulverizing chamber side wall Discharge port, the discharge port are connect with screen-dividing machine, and product outlet and coarse fodder outlet are provided on the screen-dividing machine.

2. airslide disintegrating mill according to claim 1, it is characterised in that: the dedusting mechanism passes through air-introduced machine and feeding warehouse Connection.

3. airslide disintegrating mill according to claim 1, it is characterised in that: the upper end of the pulverizing chamber is arranged close to side-walls There is spray head, the spray head is connect with circulation waterway, and the bottom side of the wall of the pulverizing chamber is additionally provided with water outlet.

4. airslide disintegrating mill according to claim 1, it is characterised in that: the lower end of the throwing disc is provided with shaft, described Shaft is driven by driving motor and is rotated.

5. airslide disintegrating mill according to claim 1, it is characterised in that: it is provided with sieve in the screen-dividing machine, described point The upper end of screen(ing) machine is connected to the discharge port of pulverizing chamber, and the coarse fodder outlet is located at sieve upper position, and the coarse fodder outlet is logical Piping is connect with coarse fodder storehouse, and the coarse fodder storehouse is connect by air conveying device with feed hopper.

6. airslide disintegrating mill according to claim 5, it is characterised in that: the air conveying device includes air delivery pipe and pipeline Feed inlet, one end of the air delivery pipe is connect with Wormwheel fan, the other end and feed hopper connect, the pipeline feed inlet setting In air delivery pipe side wall and at Wormwheel fan, the upper end of the feed hopper is cylindrical body, the air delivery pipe and feed hopper The tangent setting of cylindrical sidewall, the top surface of the feed hopper is provided with air inlet, and the air inlet is provided with Air Filter.

7. airslide disintegrating mill according to claim 1, it is characterised in that: the lower end of the product outlet setting screen-dividing machine, The product outlet is connected to by pipeline with finished bin.