CN201135896Y

CN201135896Y - Lower direct transmission inner reverting staged super fine pulverizer

Info

Publication number: CN201135896Y
Application number: CNU2007201752294U
Authority: CN
Inventors: 谢新佑; 谢新佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-19
Filing date: 2007-08-28
Publication date: 2008-10-22
Anticipated expiration: 2017-08-28

Abstract

The utility model relates to a lower straight conveying and inner material returning ladder type superfine grinder, which belongs to the technical field of the crushing equipment widely used in the industries such as the chemical engineering, the building material, the metallurgy the non-metallic mineral, etc. The utility model comprises a motor, a material dumping disc, a crushing room, a crushing impeller, a classifying impeller, a classifying room, a classifying machine and an inner material returning channel. The motor is installed under the grinder, is connected through a flexible shaft coupling and is respectively fixed on a foundation bed. The material dumping disc, the crushing room, the crushing impeller and the classifying impeller are fixed on the main shaft in sequence from top to bottom. The crushing room is separated into a plurality of small compartments by an erected angle liner plate, the circumferential liner plate of which is composed of a plurality of ladders, and the crushing room and the classifying room are communicated by the material returning channel. The classifying room is communicated with a material discharge opening arranged at the upper part through the classifying impeller. A material feeding pipe is arranged at one side of the crushing room. The ability of the crushing of the grinder to the pigment, the inorganic chemically raw material and the non-metal mineral is strong, the particle diameter of the product is thin, the quantity of production is high, the energy consumption is low, and the mechanical vibration is small.

Description

Under the internal return staged ultrafine crusher that direct transfers

Technical field

The utility model relates to the internal return staged ultrafine crusher that direct transfers under a kind of, belongs to the widely used disintegrating apparatus technical fields of industry such as chemical industry, building materials, metallurgy and nonmetallic ore.

Background technology

Utility model 012290769 " the centrifugal head-on collision ultrafine crusher of multilayer " has material particles collision probability height, collision strength is big, the advantage that grindability is strong, but have several structural shortcomings: 1, pulverizer all links to each other with the deduster air-introduced machine of system usually, it is unnecessary to establish the real genus of a feeding blast fan again, expends main motor power; 2, set classifying turbine has only one-level, the fineness of restive product; 3, grading room and pulverizing chamber are a Room altogether, and the coarse granule that classifying turbine is told is easily mixed with fine grained, cause the classification efficiency reduction; 4, pulverizing chamber diameter up and down is about the same, air velocity too, every layer grading effect is not obvious; Though 5, pulverize rod rotation at a high speed, a lot of powerful stirring actions, pulverization is strong inadequately; 6, motor directly is fixed on the top of pulverizer, and vibration is transmitted mutually, and the phase mutual interference also may cause the danger of resonance.

Summary of the invention

The purpose of this utility model is a kind of internal return staged ultrafine crusher that direct transfers down of design, with the raising crush efficiency, cuts down the consumption of energy; Improve classification efficiency, increase powder fineness and output; Guarantee that machine is stable.

The utility model is realized by following design.

The internal return staged that direct transfers under a kind of ultrafine crusher, it is characterized in that, this pulverizer comprises motor, flexible clutch, batch mixing pan, the 1-4 layer is pulverized impeller and classifying turbine, grader, described crusher and motor are separately fixed on the ground, motor mounting pulverizer below by flexible clutch with the two transmission that directly links, batch mixing pan and 1 to 4 grade are pulverized impeller and classifying turbine is fixed on the main shaft of pulverizer successively from bottom to top, this main shaft is fixed on, on the step, above top chock, set gradually isolating cylinder, grader, the discharging elbow, constitute multistage pulverizing chamber between batch mixing pan and the top chock, sidewall is equipped with liner plate and a feed pipe, bottom is inlet air plenum and support, and the returning charge passage of isolating cylinder outer ring communicates with pulverizing chamber.

1. motor is placed pulverizer under, directly link to each other with the main shaft of pulverizer with flexible clutch, pulverizer and motor are separately fixed on separately the ground, avoid vibrating mutual transmission, and the main shaft of pulverizer is shortened dramatically.

2. motor rear end plate is fixed on the motor bearing through repacking, again bearing is fixed on the ground built-in fitting, make motor stabilizing, firm.

The internal diameter of pulverizing chamber from bottom to top one-level enlarge than one-level, form step-like multistage pulverizing chamber, the angle liner plate that each grade is straightened again is separated into several little compartments.Pulverize rod like this and on every grade of step, hit powder, powder granule is produced clash into, rub, peel off, thereby improve crush efficiency.Simultaneously, because the pulverizing chamber internal diameter from bottom to top enlarges gradually, then air velocity from bottom to top lowers step by step, makes material particular diameter variation step by step from coarse to fine, improves classification efficiency.

4. every grade of ladder in pulverizing chamber all is provided with a pulverizing impeller and a classifying turbine, makes the powder of pulverizing chamber realize multistage pulverizing, multistage classification.

5. isolating cylinder is set in grading room.Under the air-introduced machine effect powder is introduced grading room by pulverizing chamber, arrive grader, the coarse granule through centrifugal force is told enters the returning charge passage outward by isolating cylinder and returns pulverizing chamber downwards.Coarse dispersion after having avoided separating is mixed with the fine powder body again, to improve classification efficiency.

6. grader is by another driven by motor that is installed in the pulverizer top, and rotating speed can be regulated by this motor voluntarily according to required powder fineness.

Description of drawings

Fig. 1 is the structural representation of the utility model " internal return staged ultrafine crusher direct transfers down ":

Among Fig. 1,1 motor bearing, 2 motor, 3 flexible clutch, 4 main frame supports, 5 lower bearings, 6 pulverizer main shafts, 7 batch mixing pans, 8 get rid of the material piece, 9 pulverizing chamber, 10 liner plates, 11 jiaos of liner plates, 12 wear-resistant blocks, 13 pulverize rod, and 14 pulverize impeller, 15 classifying turbines, 16 upper bearing (metal)s, 17 isolating cylinders, 18 grading rooms, 19 graders, 20 classification arbors, 21 powder discharging openings, 22 material inlets, 23 internal return passages, 24 casings.

Below in conjunction with accompanying drawing, describe the design content of the utility model " internal return staged ultrafine crusher direct transfers down " in detail.

The specific embodiment

As shown in Figure 1, be fixed on the top pulverizer shell 24 of fixing of the support 4 on the ground built-in fitting, the main shaft at center passes the lower bearing 5 that is positioned at support 3 central authorities, links to each other with main motor 2 by flexible clutch 3.The bonnet of motor 2 fixes through repacking and motor bearing 1, bearing is fixed on the ground built-in fitting again.Like this, main frame support 4 and motor 2 are separately fixed on separately the ground, and the two links by flexible clutch 3, has avoided vibration to transmit mutually.Batch mixing pan 7,1-4 layer pulverizing impeller 14 and classifying turbine 15 from bottom to top are installed on main shaft 6 successively.The upper end of axle is fixed on the upper bearing (metal) 16, and upper bearing (metal) is fixed on the ring flange center below the grading room 18.Batch mixing pan 7 peripheries are equipped with 6-24 and get rid of material piece 8.The angle liner plate 11 that each grade border of pulverizing chamber 9 is straightened is separated into 4-48 little compartment, and the inclined tube of the charging aperture 22 of its side leads to the top of batch mixing pan 7.Pulverize impeller 14 peripheries and evenly stretch out 4-24 root pulverizing rod 13, wear-resistant block 12 is equipped with in the termination of pulverizing rod.One isolating cylinder 17 is set on the lower flange of grading room 18, and its border, outside and grading room 18 form the internal return passage 23 of coarse dispersion toward current downflow.Grader 19 is equipped with at the upper outlet place of grading room 18, and its center links by classification arbor 20 and another motor, and the rotating speed of grader is by this Electric Machine Control.The top of grader is the powder discharging opening 21 of an elbow shape.

Function of the present utility model realizes by the following course of work.

Place the motor of pulverizer below directly to drive spindle operation by flexible clutch.Particle diameter enters batch mixing pan less than 40 millimeters material from material inlet, and under centrifugal action, the speed that accelerates to more than 100 meter of per second is very soon hit on liner plate, has both hit the powder granule of bed course on the liner plate, self pulverizes (pulverizing certainly) simultaneously again.Splashed at a high speed by powerful ground grains, run foul of each other and pulverize.The angle liner plate that the liner plate of border is erect by the 4-48 piece in the pulverizing chamber is separated into several little compartments, the powder of the inside is not owing to be subjected to the disturbance of high-speed rotational gas, and deposit relatively, under the pulverizing bastinade of rotation at a high speed hits, be subjected to powerful bump, friction, shear, peel off and pulverized.Under the pulling of air-introduced machine, fine particle is subjected to centrifugal force to be drawn to last layer for a short time, and coarse dust is subjected to centrifugal force to be thrown to periphery continuation pulverizing greatly.Because the pulverizing chamber from bottom to top diameter of each layer increases one by one, pulverizes excellent diameter accretion, like this, top one deck is littler than the ascending air speed of following one deck, and centrifugal force is bigger, has just caused top one deck thinner than the powder of following one deck.The classifying turbine that pulverizing chamber topmost is provided with blocks coarse dust again, make fine silt enter grading room through isolating cylinder, the further classification of the grader of grading room top makes fine silt discharge by discharging opening, coarse granule is got rid of peritropous returning charge passage return pulverizing chamber continuation pulverizing.

The advantage of the utility model " lower direct transmission inner reverting staged super fine pulverizer " is that grindability is strong, produces The product particle diameter is thin, and energy consumption is low, and mechanical oscillation are little, and stable operation is easy to maintenance.

Claims

1. internal return staged ultrafine crusher direct transfers under one kind, it is characterized in that, this pulverizer comprises motor, flexible clutch, batch mixing pan, the 1-4 layer is pulverized impeller and classifying turbine, grader, described pulverizer and motor are separately fixed on the ground, motor mounting pulverizer below by flexible clutch with the two transmission that directly links, batch mixing pan and 1 to 4 grade are pulverized impeller and classifying turbine is fixed on the main shaft of pulverizer successively from bottom to top, this main shaft is fixed on, on the step, above top chock, set gradually isolating cylinder, grader, the discharging elbow, constitute multistage pulverizing chamber between batch mixing pan and the top chock, sidewall is equipped with liner plate and a feed pipe, bottom is inlet air plenum and support, and the returning charge passage of isolating cylinder outer ring communicates with pulverizing chamber.

2. pulverizer according to claim 1 is characterized in that, described motor, and end cap is fixed through repacking and bearing thereafter, by bearing motor is fixed on the ground.

3. pulverizer according to claim 1, it is characterized in that, described pulverizing chamber, its internal diameter is from bottom to top to increase step by step with staged, every grade all has the impeller of pulverizing and classifying turbine, and the liner plate of pulverizing chamber border is separated into 4-48 little compartment by the angle liner plate of erectting.