CN2117206U - Pendulum type powder mill - Google Patents

Abstract

The utility model discloses a pendulum type powder mill. An upper bracket which is integrally connected with a sleeve barrel and is used for fixing the upper end of a central axis is arranged above a plum blossom rack. A driving device is also arranged above the plum blossom rack, and a striker plate is added on the inner side of a perching knife. The central axis of the pendulum type powder mill has high rigidity, and the rotation of the plum blossom rack produces small vibration. A foundation need not be provided with slots when the pendulum type powder mill is installed, and the foundation bolts of the pendulum type powder mill are distributed uniformly, so the vibration of the main machine is further reduced. The perching knife has strong capacity for effectively throwing material. Compared with the existing pendulum type powder mills in the same type, the production is increased by about 80%, the power consumption for one ton of powder is reduced by about 45%, and the working noise is reduced by about 16%.

Description

pendulum type powder mill

The utility model relates to a kind of centrifugal pendulum dynamic formula grinding mill.

Present commercially available pendulum type ring roll pulverizer, as 4R3216B type pendulum type ring roll pulverizer (Shanghai Metallurgy Mine Machinery Factory's manufacturing), 4R3216 type pendulum type ring roll pulverizer (Guilin Mining Machinery plant, Guangxi Prov.'s manufacturing), its main frame is by base, be surrounded on the steam return box of chassis outer side, be seated in the cover tube on the base, be surrounded on the bull ring of base inboard, be evenly distributed on four grinding rollers on the bull ring inner surface, fix four Burnisher apparatus that each grinding roller is used, hang the plum blossom frame (runing rest) of each Burnisher apparatus, and four lay respectively at each grinding roller below and its composition such as perching knife that together rotate around central shaft.The center of base is provided with a center pedestal, and this pedestal is hollow, and the bottom links to each other with base, and the upper end is overhung in the cover tube, the just movable upper end that is fixed on this of plum blossom frame, and central shaft passes from this bottom, links to each other with the plum blossom frame.During grinding, material is sent in the main frame equably, the plum blossom frame drives four Burnisher apparatus that are suspended on above it and rotates around central shaft, grinding roller contacts with bull ring simultaneously and produces rotation, under action of centrifugal force, grinding roller outwards swing compresses bull ring, and the material that the perching knife below be positioned in this moment will shovel throws therebetween; Under the roller of grinding roller ground, material was pulverized.The material that pulverizes is blown to the analytical engine of top by the air-flow that blows by steam return box and carries out sub-sieve, and fineness failure falls into main frame and heavily grinds, and eligible is discharged outside the machine with the wind.The major defect that this pendulum type ring roll pulverizer exists is: 1. the center pedestal is that the lower end links to each other with base, the upper end is overhung in the cover tube, no fulcrum, and radial dimension is little, poor rigidity, the vibration that causes the rotation of plum blossom frame to produce is big, and it is unstable to cause grinding roller to contact with the moment of bull ring, has reduced effective grinding time relatively, thereby reduced grinding efficiency, reduced output; 2. drive unit is positioned at the bottom of main frame base, by shaft coupling power is reached central shaft, therefore need on ground, open a groove, be used to place drive unit, weakened the ground rigidity so on the one hand, make the foundation bolt skewness of firm banking on the other hand, again on the one hand, shaft coupling and central shaft centering also have error, more than the vibration that all can increase machine of three aspects, reduce output; 3. the existing perching knife material casting face of this machine disperses, and has partial material to fail to throw to bull ring, directly influences the raising of output.

It is little that the purpose of this utility model provides a kind of vibration, grinding efficiency height, the novel pendulum type ring roll pulverizer that output is high.

For achieving the above object, the utility model takes to be provided with a upper bracket that is connected as a single entity with the cover tube above the plum blossom frame, be used for fixing center, the upper end pedestal that overhangs in the cover tube, thereby can strengthen the rigidity of whole center pedestal, reduce the vibration that the rotation of plum blossom frame produces, improve the moment contact stabilization and effective grinding time of grinding roller and bull ring, reach its grinding efficiency of raising and output.

After the center pedestal installs upper bracket additional, just the bottom can be driven and change the top driving into, be about to the top that drive unit is arranged on the plum blossom frame.So, ground just no longer needs open channels, and whole main frame base can be placed on the monoblock ground, and foundation bolt also can evenly distribute, thereby can further reduce the vibration of main frame.But, install upper bracket additional and can bring undersetting centering difficult technologies problem, the accuracy of manufacture is required height, be unfavorable for the manufacturing of product.A kind of method of compromise is the cancellation undersetting, and whole plum blossom frame is hung on the upper bracket.Because the central shaft of this structure can design very shortly, thereby the existing type of ratio of rigidity is much higher, can reduce the vibration that the plum blossom frame produces equally significantly.

When the perching knife shovel of existing type is expected, material casting face broad, partial material fails to throw to bull ring, and main cause is that the inboard of perching knife does not have striker plate, due to partial material runs off from the inboard of perching knife.The utility model installs a striker plate additional in the inboard of existing perching knife, can avoid material loss on the one hand, makes the material casting direction more concentrated, accurate on the other hand, thereby can further improve the output of main frame.

The drive unit that is positioned at plum blossom frame top can adopt various ways, as belt drives, and chain drive, even engine can be contained in the cover tube.But still to adopt a pair of bevel gear to drive better, promptly a bevel gear links to each other with central shaft, and another links to each other with the driving wheel that is positioned at the cover tube outside by power transmission shaft after being engaged with and changing direction.

The advantage of the novel pendulum type ring roll pulverizer of the utility model is: 1. after installing upper bracket additional, improved the rigidity of central shaft, reduced the vibration that the rotation of plum blossom frame produces, thereby improved grinding efficiency; 2. reduced set noise; 3. drive unit changes top into by the bottom, and ground does not need open channels, and foundation bolt is evenly distributed, and has further reduced machine vibration; 4. install striker plate additional in the inboard of perching knife, improved effective shovel material ability.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is the structural representation of facing of the novel pendulum type ring roll pulverizer of the utility model.

Fig. 2 is the vertical view of the novel pendulum type ring roll pulverizer of the utility model.

Fig. 3 is the perching knife vertical view of the novel pendulum type ring roll pulverizer of the utility model.

Fig. 4 is the perching knife A-A face cutaway view of the novel pendulum type ring roll pulverizer of the utility model.

Fig. 5 is existing pendulum type ring roll pulverizer perching knife vertical view.

Fig. 6 is existing pendulum type ring roll pulverizer perching knife A '-A ' face cutaway view.

From Fig. 1, Fig. 2 as can be known, the base of the novel pendulum type ring roll pulverizer of the utility model ［ 8 ］ is positioned at the bottom, outer ring is around a steam return box ［ 9 ］, cover tube ［ 2 ］ is seated on the base, bull ring ［ 6 ］ is looped around the base inboard, grinding roller ［ 5 ］ is evenly distributed on the bull ring inner surface, is fixed by an activity of Burnisher apparatus ［ 4 ］, and the other end is suspended on the plum blossom frame ［ 3 ］; Below each grinding roller, all be furnished with one with its together around the perching knife ［ 7 ］ of central shaft ［ 12 ］ rotation; Whole plum blossom frame is suspended on the upper bracket ［ 1 ］ with central shaft, and upper bracket is positioned at the central authorities of cover tube, fuses by reinforcement ［ 13 ］ and cover tube; The a pair of bevel gear ［ 10 ］ that is used for driving the central shaft rotation is arranged on upper bracket, and one of them links to each other with central shaft, and another is engaged with to change after 90 ° of the direction of rotation by power transmission shaft and links to each other with a driving wheel ［ 11 ］ outside being positioned at cover tin.

As can be seen from Figure 5, existing perching knife has only outer baffle ［ 14 ］, and as can be seen from Figure 3, perching knife of the present utility model has increased Internal baffle ［ 15 ］, so just can make material casting more concentrated, improves effective material casting amount.

From the above: the utility model embodiment adopts top to drive, and base can be fixed on the monoblock ground equably with fang bolt, and whole plum blossom frame is suspended on the upper bracket, and central shaft is shorter, good rigidly, and the entire machine vibration is little when milling.Experimental result shows: the novel pendulum type ring roll pulverizer of the utility model compares with existing similar type: (to grind 3 grades of Mohs' hardness materials, finished product 0.074mm) output can improve about 80%; Ton powder power consumption descends about 45%; Operating noise descends about 16%.

Claims (4)

1, a kind of novel pendulum type ring roll pulverizer, comprise base, be surrounded on the steam return box of chassis outer side, be seated in the cover tube on the base, be surrounded on the bull ring on the base madial wall, be evenly distributed on the grinding roller on the bull ring inner surface, the fixing Burnisher apparatus used of grinding roller, be used to hang the plum blossom frame of Burnisher apparatus, drive the central shaft of plum blossom frame and lay respectively at each grinding roller below with its around the perching knife that central shaft together rotates, it is characterized in that: above the plum blossom frame, be provided with one and be used for fixing a upper bracket [1] on the central shaft with the cover tube is connected as a single entity.

2, novel pendulum type ring roll pulverizer according to claim 1 is characterized in that: this plum blossom frame is to be suspended on the upper bracket ［ 1 ］, and the central shaft drive unit is arranged on the top of this plum blossom frame.

3, novel pendulum type ring roll pulverizer according to claim 1 and 2 is characterized in that: a striker plate ［ 15 ］ is housed in the inboard of this perching knife.

4, novel pendulum type ring roll pulverizer according to claim 3, it is characterized in that: the central shaft drive unit is a pair of bevel gear ［ 10 ］, one of them links to each other with central shaft, another with link to each other with driving wheel ［ 11 ］ on being positioned at a cover lateral wall by power transmission shaft after its engagement changes direction.

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