CN2134224Y - High-speed heat insulation prilling mixer - Google Patents

Abstract

The utility model discloses a high-speed heat insulation granulating mixing machine, relating to a mixing device for producing special refractory material containing carbon, and comprising a material mixing cavity, a stirring device, a driving device, and a discharge device. The utility model has the characteristics of high efficiency, heat insulation, uniform mixing, etc. The interior of the high-speed heat insulation granulating mixing machine is provided with a stirring impeller and a high speed rotor, and material flow which is good for mixing is formed by reasonable shape and rotational speed and the action of a conical shaft cap; in addition, a granulating effect can be produced under the function of binding agents; simultaneously, the high-speed heat insulation granulating mixing machine is provided with a heat insulation layer for heating material. The high quality and the high efficiency of the mixing in special refractory material production are realized through these measures; the using performance of manufactured products is improved, and the service life is prolonged.

Description

High-speed heat insulation prilling mixer

The utility model relates to the mixing apparatus that a kind of refractory material is produced, and the pug that is particularly useful for several material ratio heavy phase difference great disparities, resin and is in the producing as carbon containing refractories such as magnesium carbonaceous of bond mixes.

At present, the mixing apparatus in the refractory industry production mainly contains edge runner, puddle mixer, planetary-type mixer etc.Representing and solving the batch mixing problem in the special refractories production of refractory material developing direction is important step.With magnesium carbonaceous carbon containing refractory is example, raw material components have the bigger magnesia of proportion and proportion very little, be easy to floating graphite, so be difficult to mix, and be to be bond with the resin, it has certain requirement to temperature, and is because temperature is low excessively, mobile poor, be unfavorable for mixing, too high can the generation of temperature solidified.For the mixing in the special refractories production, edge runner and puddle mixer are not suitable, can only adopt 750 type planetary-type mixers to produce carbon containing refractories such as magnesium carbonaceous in the past.

From the design feature and the operating principle of 750 type planetary-type mixers, the material streamline is the level curve motion basically, and the material (as magnesia and graphite) that is difficult to proportion is differed greatly mixes; There is not tangible granulation effect; No lagging facility can not satisfy insulation (as resinoid bond) requirement; So mixing time is long, efficient is low, and is of poor quality, and limited by environment temperature, is unfavorable for improving the performance and the service life of goods.

Problem at above-mentioned existence; the purpose of this utility model is to design a kind of novel high speed insulation granulation mixer; the characteristics that can adapt to carbon containing refractory; can speed change at different mix stages; material there is insulation effect; under the effect of bond, can produce the granulation effect in the mixed process,, thereby improve the serviceability of goods and prolonged service life so mixing velocity is fast, efficient is high, effective.

For achieving the above object, the technical measures that the utility model is taked and the good effect of generation are: (1) agitator arm is to adopt the twin-stage variable speed electric motors, particularly to drive, and can realize the different mixing speeds of different mix stages so as required.(2) in hopper bottom be provided with heat-insulation layer all around, carry out adjustment according to the performance of material and the needs of environment, material is heated and is incubated.Can guarantee that like this material evenly mixes fully, also helps moulding.(3) shape of appropriate design agitator arm blade and rotating speed, on the main shaft top that agitator arm is installed the taper axle cap is housed, material is in the circumferential of blade and the expansion of radial thrust lower edge groove bottom, again along turning under the taper sidewall rising of lining plate garden cylindrical inner wall and middle cover, and in hopper, be provided with high speed rotor, the rotation of high speed rotor makes material further produce friction, bump, stir, material is mixed fully, and as required, by to the adding mode of bond and the control of dilute strength, heavier feeds particle and graphite and heavier feeds fine powder are mixed be incorporated in rolling on the blade inclined-plane and generation granulation effect.Improved the mixing quality and the efficient of material so greatly, improved product properties and prolonged service life.

Introduce the structure and the operating principle of high speed insulation granulation mixer described in the utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is for being incubated the overall construction drawing of granulation mixer at a high speed.

Fig. 2 is the structure and the direction of rotation figure of agitator arm (3).

Fig. 3 is the motion pattern that the interior material of hopper (5) forms.

Fig. 4 is the structural representation of high-speed rotor system (18).

As shown in Figure 1, high-speed heat insulation prilling mixer is made up of (1) loam cake, (2) middle cover, (3) agitator arm, (4) lining plate, (5) hopper, (6) bottom lining plate, (7) support, (8) motor, (9) shaft coupling, (10) transmission bracket, (11) reductor, (12) shaft coupling, (13) main shaft, (14) main shaft bearing sleeve, (15) discharging mouth mask, (16) discharge door switching mechanism, (17) axle cap, (18) high-speed rotor system etc.

Loam cake (1), middle cover (2) and hopper (5) consist of the batch mixing chamber of a sealing, in set up liner plate (4) and bottom lining plate (6), the cavity of hopper (5) passes into warm water formation heat-insulation layer. But root Regulate suitable temperature according to needs and material is heated and be incubated, the temperature of material is too low, the bond poor fluidity, be unfavorable for mixing, the too high meeting of temperature of charge is solidified bond, keeps suitable temperature can improve the mixed effect of material, reach abundant mixing, also be conducive to the moulding of material.

Agitator arm (3) is to be driven by shaft coupling (9), reductor (11), shaft coupling (12), vertical shaft (13) by motor (8), motor (8) adopts the change pole double speed motor, can mix according to difference like this rotary speed of phasic change agitator arm (3), reach speed change request. Axle cap (17) plays the axial restraint effect to agitator arm (3), and it is designed to taper (in a hole is arranged), is convenient to tossed material and is back to root of blade along the conical surface, is conducive to material and fully mixes. Vertical shaft bearing sleeve (14) is fixed on the support (7). Motor (8) and reductor (11) link by transmission bracket (10) and basis.

Shown in Fig. 2 and 3, agitator arm (3) is configured to by (19) blade and (20) wheel.Blade (19) has three, is evenly distributed on the wheel carrier (20), and each blade is provided with three holes, and the cross section of blade (19) is the triangle wedge shape, and updip hypotenuse inclination angle gradually increases to 45 degree to root from 30 degree by blade (19) outer rim.The horizontal plane of the bottom surface of blade (19) and bottom lining plate (6) becomes 5 degree inclination angles, to reduce the friction between blade and the liner plate.Wheel carrier (20) is with three projectioies to form by a short garden tube, establishes three screw holes on each projection, so that with screw blade (19) is fixed on the wheel carrier (20).

The hypotenuse face of the direction of rotation assurance blade (19) of agitator arm (3) is met the direction to material.When agitator arm (3) rotated, material rolled along the domatic generation of blade (19), forms the twisting effect.Blade (19) produces circumferentially and the radial load effect material simultaneously, make material outwards be scroll expansion from the chassis and rise twist along the garden cylindrical inner wall of lining plate (4) and the taper sidewall of middle cover (2), turn down parabolically, the sweeping style of its material as shown in Figure 3 again.

As shown in Figure 4, high-speed rotor system (18) is made up of high speed rotor (21), bearing (22), power transmission shaft (23), shaft coupling (24), motor (25).To shown in the view, by wheel hub and four single piece that the stirring pawl is formed, stir the pawl section is square to high speed rotor (21), is convenient to material is stirred as the A among Fig. 4.For key is connected, spindle nose has the screw back-up ring fastening between high speed rotor (21) and the power transmission shaft (23).High speed rotor (21) drives rotation at a high speed by motor (25) by shaft coupling (24), power transmission shaft (23), its rotation produces further friction, bump, stirs material group, material is mixed fully, shortened incorporation time, improved mixing quality and efficient.

The associating mixing mechanism of high-speed rotor system (18) and agitator arm (3), the effect of bond in addition, can make material is that core produces the granulation effect with the coarse granule, to satisfy the requirement of some special circumstances.

Introduce the operating process and the result of use of high speed insulation granulation mixer described in the utility model below in conjunction with embodiment.

The Anshan iron and steel plant refractory Company is incubated the raw material that the granulation mixer tries out when magnesium carbonaceous converter lining brick is produced at a high speed with this mixes, and No. one time the batch mixing amount is 600 liters.

The batch mixing process is: at first lead to warm water in heat-insulation layer, so that the material that is preheated keeps certain temperature.Make agitator arm (3) low speed rotation, feed intake from the interface of loam cake (1) or middle cover (2) order by magnesia coarse granule material, bond, graphite, agitator arm and high speed rotor are rotated at a high speed, drop into magnesia fine grained material, after reaching mixed effect, make high speed rotor (21) stall, agitator arm (3) low speed rotation.Simultaneously, open bin gate, mixed material is discharged from discharging opening, close bin gate after the emptying, prepare mixing material next time.The batch mixing cycle (comprise feed intake, mixing, discharging) is 12～15 minutes.

Compare with 750 type planetary-type mixers: each batch mixing amount is 750 liters, and its incorporation time is 40 minutes, closes 1125 liters/hour; And when adopting this to be incubated the granulation mixer at a high speed, each batch mixing amount is 600 liters, and its incorporation time was calculated by 15 minutes, closed 2400 liters/hour, and as seen its mixing efficiency improves greatly.

From the result of use of magnesium carbonaceous converter lining brick on Anshan iron and steel plant the 3rd steelwork converter of being produced: the Mg-C brick that is mixed and made into 750 type planetary-type mixers can reach furnace life 800 times originally; create average furnace life 1270 times and be incubated Mg-C brick that the granulation mixer is mixed and made at a high speed with this; create surplus the highest furnace life 2000 time, surpassed 1200 research objectives that Anshan iron and steel plant is assigned.

Claims (3)

1; a kind of high speed insulation granulation mixer; comprise by (1) loam cake; (2) middle cover; (4) lining plate; (5) hopper; (6) the batch mixing chamber of bottom lining plate composition; agitating device; by (7) support; (8) motor; (9) shaft coupling; (10) transmission bracket; (11) reductor; (12) shaft coupling; (13) main shaft; (14) transmission device of main shaft bearing sleeve composition; by (15) discharging mouth mask; (16) drawing mechanism formed of the switching mechanism of discharging etc.; it is characterized in that agitating device is made up of agitator arm (3) and high-speed rotor system (18); taper axle cap (17) is equipped with at main shaft (13) top; the motor (8) that drives agitator arm (3) adopts the stage-changing double-speed motor, is provided with the heat-insulation layer that feeds warm water in hopper (5).

2, high speed according to claim 1 insulation granulation mixer is characterized in that agitator arm (3) is made up of (19) blade and (20) wheel carrier; Blade (19) has three, be evenly distributed on the wheel carrier (20), each blade is provided with three holes, the section of blade is the triangle wedge shape, section updip hypotenuse inclination angle gradually increases to 45 degree to root from 30 degree by blade (19) outer rim, and the bottom surface of blade (19) becomes 5 degree inclination angles with the horizontal plane of bottom lining plate (6); Wheel carrier (20) is with three projectioies to form by a short garden tube, and each projection is provided with three screw holes.

3, high speed according to claim 1 insulation granulation mixer is characterized in that high-speed rotor system (18) is made up of (21) high speed rotor, (22) bearing, (23) power transmission shaft, (24) shaft coupling, (25) motor; High speed rotor (21) is the single piece that foursquare stirring pawl is formed by wheel hub and four sections, is installed in the end that power transmission shaft (23) stretches into hopper (5) and main liner plate (4) sidewall, and key connects, and spindle nose is fastening with the screw back-up ring.

Images