CN2156934Y

CN2156934Y - Tumbling mill

Info

Publication number: CN2156934Y
Application number: CN 93203029
Authority: CN
Inventors: 李兴隆
Original assignee: Individual
Current assignee: Li Xiaolan
Priority date: 1993-02-09
Filing date: 1993-02-09
Publication date: 1994-02-23
Anticipated expiration: 2003-02-09

Abstract

The utility model relates to a tumbling mill which is composed of a power supply, a power driving mechanism and a body. The body comprises a rotating barrel body in which a plurality of roller tumbling groups, a material guide roller and a pressure roller are arranged. Materials continuously pass through the relevant tangential points of the rollers and are extruded and pulverized, and then the tumbling mill realizes the milling work of continuous single-particle thin material layers. Compared with a ball mill, the tumbling mill saves power by 30-35%, having small containing capacity, a deceleration system has easy matching and simple structure, and the utility model is suitable for the cement production of drying method as well as the production of a wetting method.

Description

Tumbling mill

The utility model belongs to the material grinding technical field.It is a kind of novel grinding process and the equipment of developing on the basis of old-fashioned ball mill, Vertical Mill and roll squeezer.

About the operation principle and the structure of ball mill and Vertical Mill (roller mill), see " construction material machine and equipment " book for details, the 397-449 page or leaf, three universities and colleges such as Wuhan Building Material Polytechinc College compile, China Construction Industry Press publishes, in December, 1980 front page.

See " progress that the roll squeezer high pressure is pulverized the field " about the operation principle of roll squeezer and structure and application.KHD flood Bao Weidake company, Yue Geshituoyang " cement technology " magazine, nineteen ninety, 52-53 page or leaf.

The major defect of ball mill is:

1, the power effective rate of utilization is extremely low, and old-fashioned ball mill accounts for 2～3% of input power, and new-type ball mill also has only 5～7%.Promptly the power more than 95% is not utilized.Reason is that steel ball is raised when leaving, and the probability that hits material is too low, according to the interrelated data introduction, during steel ball impacts for each thousand times, only once hit material, all the other mostly occur in impact useless between ball and ball, ball and the liner plate and the friction, become sound and heat is dispersed into surrounding space.And the power of this lifting abrasive body accounts for about 80% of ball mill input power.

Though Vertical Mill and roll squeezer are saved electric energy 10～25% than ball mill at present, the utilization rate of total effective energy does not surpass 10% yet.

2, along with ball mill maximizes day by day, the power of motor of configuration is also very big, and the installed power of external large-size ball mill is up to 6000～7000KW, and is also more and more high to the requirement of reductor, costs an arm and a leg.

3, because the impact of a large amount of steel balls causes the noise pollution up to 110 decibels.

4, because the idle work ratio of steel ball is very big, the relative consumption of metal is very big.

The utility model is exactly that several garden cylindricality rollers of a kind of usefulness of developing at above-mentioned situation replace the new type tube roller of the abrasive body of different shape in the ball mill to grind.

The utility model is made up of power-driven mechanism and cylindrical shell mechanism, and cylindrical shell mechanism drives by roller wheel bearing with in deciding and by power-driven mechanism it is rotated.Cylindrical shell mechanism is made of backer roll and roller group, guide roller, shelves flitch, the spoiler of garden cylindrical shell and setting within it.Between cylinder inboard wall and the roller group, form higher pair mechanism between roller group and the backer roll on it.The two ends of garden cylindrical shell have material intake and outlet, and its outlet is arranged on the lower end of garden cylindrical shell, and inlet is arranged on the upper end of garden cylindrical shell.The two ends of garden cylindrical shell are provided with the bearing support of supporting pressurization roll shaft, roller axle, guide roll shaft, and bearing support is provided with for the radially upper and lower mobile guide rail of each roll shaft.The roller group was arranged in backer roll periphery and the garden cylindrical shell between week, formed by several rollers that are symmetrically distributed in the vertical center line below with same diameter, each roller is bearing on the bearing support by its axle, and the axis of garden cylindrical shell, backer roll, roller, guide roller is parallel to each other.The axle center of backer roll and cylindrical shell axle center, garden are on same the vertical center line, and both both can be concentric, again can decentraction, and when concentric, its garden week is tangent with the outer garden of all roller groups with cylindrical shell; During decentraction, then should make its garden week tangent with two rollers of roller group outermost end.The diameter of roller is by being determined by the physical property of comminuting matter and granularity.Lead the axial flow that a roller is mainly used in the control material, be arranged on the radially discharging side of roller group in the cylindrical shell of garden, tangent with the interior garden week of garden cylindrical shell between the interior week of the periphery of backer roll and garden cylindrical shell, and leave certain clearance between the periphery of backer roll.Shelves flitch and spoiler are separately positioned on the below of material inlet and outlet on the cylindrical shell of garden, are mainly used in to stop that material is counter to flow and guarantee that material outlet has enough controlling levels, the radial circulation grinding of realization material.The pressure of backer roll can be provided by deadweight, hydraulic pressure, spring or the alternate manner of roller.The shape of roller and backer roll can be made the straight garden column that complements one another, multistage column, garden taper, various ways such as screw shaped according to the different application occasion.Transmission can be achieved by the frictional force of roller and garden cylinder inboard wall between roller and the garden cylindrical shell, also can the ring gear engagement transmission mechanism be set on its contact-making surface and be achieved.

The made cartridge type roller of the utility model is milled, its garden cylindrical shell drives its rotation by power-driven mechanism, thereby drive all roller groups rotation, material is squeezed when being forced to through the contact point (point of contact) between each roller and shears and pulverize (referring to a, b, c, d, e, f each point in the accompanying drawing).It has overcome many deficiencies of ball mill, existing ball mill is compared, can save electric energy more than 30%～35%, not be only applicable to the cement dry method grinding, also be applicable to wet grinding, this is that Vertical Mill and roll squeezer can't satisfy simultaneously, owing to be that the thin bed of material of individual particle is pulverized, belong to the low stress grinding, thereby its metal wastage, not only low more than ball mill, in addition also lower than roll squeezer.Not only mechanism manufactures and designs novel milling equipment in view of the above, also can be used for the technological transformation of old ball mill.It is little, simple in structure to have the motor supporting capacity of installing in addition, and system cost is low, easily advantage such as popularization.

Energy saving mechanism of the present utility model is:

1, the center of gravity of the main roller of tube roller mill and the center of gravity of cylindrical shell are on same the plumb line, the mill resistance merit of having only a pivot place, there is not the eccentric hoisting work of the sort of abrasive body of ball mill, therefore, cut the situation that gross weight equates at, abrasive body dress identical with former ball mill specification, the installed capacity of tube roller mill only is 1/3rd to 1/4th of a ball mill.Thereby energy consumption can descend significantly.

2, as shown in drawings, directly rolled and pulverize when material footpath a, b, c, d, e, f each point, do not have otherwise energy dissipation by roller, thereby the efficient extra-high-speed.

What 3, the rotating speed of tube roller mill can exceed ball mill far away faces Jie's rotating speed, and material is the situation that the thin bed of material of individual particle is pulverized continuously in mill, and the required average pressure of broken material is lower than the average pressure of Vertical Mill and roll squeezer, and power consumption is also corresponding lower.

4, tube roller mill belongs to the low stress fragmentation to the fragmentation of material, and the galling amount is less relatively.

5, because the special construction of tube roller mill, the feeding point can cause part not have the condition of medium grinding than the ball mill height, and the moment of partial material before not entering roller impacted by gravity and realize that part pulverizes, and mill diameter is healed big this effect significantly.

6, embodiment of the present utility model proves, the footpath of material, axial flow have good control, can carry out fully effectively control to the output and the quality of product.

7, the rotating speed of tube roller mill this characteristic that can exceed ball mill is far away given and is being shown have the broad speed interval to bring the requirement that adapts to the various materials of grinding, obtains optimum efficiency.

8, because tube roller mill is continuously thin bed of material grinding, there is not roll squeezer the sort of " edge effect " problem.

Accompanying drawing is a structural representation of the present utility model.Among the figure: 1-garden cylindrical shell, 2-roller group, 3-guide roller, 4-backer roll, 5-shelves flitch and spoiler.

Claims

1, a kind of cartridge type roller of being made up of power-driven mechanism and cylindrical shell mechanism is milled, cylindrical shell mechanism is by roller wheel bearing with in deciding, rotate by the power-driven mechanism driving, it is characterized in that: described cylindrical shell mechanism is made of garden cylindrical shell and the backer roll that is provided with within it and roller group, guide roller, shelves flitch, spoiler, between cylinder inboard wall and the roller group, form higher pair mechanism between roller group and the backer roll on it;

(1) two ends of garden cylindrical shell have material intake and outlet, and its middle outlet is arranged on the lower end of garden cylindrical shell, and inlet is arranged on the upper end of garden cylindrical shell;

(2) two ends of garden cylindrical shell are provided with the bearing support of supporting pressurization roll shaft, roller axle, guide roll shaft, and bearing support is provided with the guide rail that radially moves up and down for roll shaft;

(3) add nip drum by branching bolster supporting, the axle center of its axle center and garden cylindrical shell is on the same vertical center line;

(4) grind and to roll the group and be arranged on backer roll neighboring and garden cylindrical shell between interior week, formed by several rollers that are symmetrically distributed in the vertical center line below, each roller is bearing on the bearing support by its axle, and the axis of garden cylindrical shell, backer roll, roller, guide roller is parallel to each other;

(5) the diameter setting of backer roll should make that at least two rollers of backer roll and roller group outermost end are tangent;

(6) guide rolls the radially discharging side that is arranged on roller group in the cylindrical shell of garden, and is tangent with the interior garden week of garden cylindrical shell between the interior week of the periphery of backer roll and garden cylindrical shell, and leaves certain clearance between the periphery of backer roll;

(7) the shelves flitch is arranged on the below of the material inlet end of garden cylindrical shell, and spoiler is arranged on the below of the material outlet end of column-style cylindrical shell.

2, cartridge type roller as claimed in claim 1 is milled, and it is characterized in that: the shape of described roller and backer roll can be the straight garden column that complements one another, multistage column, garden taper, screw shaped.