CN2374264Y

CN2374264Y - Shock-proof centrifugal vibration ore grinder

Info

Publication number: CN2374264Y
Application number: CN 99210472
Authority: CN
Inventors: 冯学董
Original assignee: RESEARCH INSTITUTE OF COAL TECHNOLOGY GUANGXI ZHUANG AUTONOMOUS REGION
Current assignee: RESEARCH INSTITUTE OF COAL TECHNOLOGY GUANGXI ZHUANG AUTONOMOUS REGION
Priority date: 1999-05-12
Filing date: 1999-05-12
Publication date: 2000-04-19
Anticipated expiration: 2009-05-12

Abstract

The utility model relates to a machine which can grind and process ores, building materials, chemical products, etc., the structure is that a motor shaft is connected with an eccentric main shaft of an eccentric vibrator through a shaft coupling, a connecting plate is arranged on the eccentric vibrator, and material grinding cylinders are arranged at the upper and lower parts of the connecting plate; a motor, the eccentric exciter is arranged on a machine frame, the lower part of the machine frame is provided with a vibration prevention spring, and the vibration prevention spring is supported on a machine seat or foundation. The utility model has the advantages of high efficiency, reasonable structure and wide applicability and can not vibrate and damage machine parts because of excessive running load.

Description

Weakening formula Centrifugal vibration ore mill

The utility model relates to a kind of plant equipment of comminuting matter, particularly materials such as ore, construction material, chemical products is carried out the equipment of grinding processing.

Present being seen grinding machinery has many types, and more common have ball mill and a vibrating mill, and ball mill is because the influence of acceleration of gravity, and its volume is big, and drum speed is slow, and the steel ball loss is big, and efficient is not high, also can influence the chemical analysis of raw material sometimes; Vibromill has overcome the restriction of ball mill acceleration of gravity and has increased considerably crush force, but this flour mill is limit owing to structure, vibration force is bigger, parts such as work a period of time after vibration spring and shaft coupling are fragile, if certain parts of spring rupture when machine run, powerful vibration force also may jeopardize personal safety and building services on every side, so volume also can not be done very greatly, therefore the abrasive dust amount reduces.The centrifugal abrasive dust equipment that occurs from early eighties is limit for the acceleration of gravity that overcomes ball mill and is invented; its design feature is with monotubular hyperbolic axle deceleration; its working speed generally is no more than 300 rev/mins; have counterweight on the bent axle; bearing block by diaxon is fixed on the support cylindrical shell by the diaxon supporting; middle no any elastomer device, the dynamic load during work are particularly started and are bigger to the impact load in the machine and the external world when shutting down.

The design people improves existing vibromill, see Chinese patent ZL932473843 " weakening formula vibromill ", its structure is on existing vibromill cylindrical shell basis of invariable a main shaft to be changed into two eccentric shafts or an eccentric shaft and is with eccentric block, reach balance and the purpose of the motionless elimination complete machine oscillation of frame by adjusting eccentric block and cylindrical shell, so just increased amplitude, improved mill output, also prolonged parts life-span, but the weak point that exists is an eccentric block is contained in the outside, operation is made troubles, sometimes also can to around bring influence.

It is big that the purpose of this utility model provides a kind of existing vibromill abrasive dust amount, and the characteristics that efficient is high possess centrifugal mill running balance again, the characteristics that noise is little, and safe in utilization, simple to operate, the weakening formula Centrifugal vibration ore mill of saving electric energy.

The utility model is improved on the basis of the design people's " weakening formula vibromill " patent, its technical scheme realizes in following mode: vibrating mill comprises charging aperture, discharging opening, abrasive barrel, frame, parts such as motor, motor reel connects with eccentric main axis by shaft coupling, eccentric activator is contained on the eccentric main axis by bearing, connecting plate is housed on the eccentric activator, connecting plate abrasive barrel is housed up and down, the centre has communicating pipe to connect, motor directly is placed on the frame, eccentric activator also is placed on the frame by the bearing block at two ends, supporting weakening spring is housed under the frame, and places on support or the basis, ground.

Above-mentioned eccentric activator is made of little bearing, big bearing, eccentric disc and balancing weight, little bearing, big bearing, eccentric disc are installed on the eccentric main axis, balancing weight is housed on the eccentric disc, be used for adjusting the balance of eccentric activator, alleviate vibration, little bearing is placed on the frame by the bearing block at two ends.Eccentric main axis can have two kinds of structures, and a kind of is an eccentric shaft structure, and another kind is that an axle adds the eccentric bushing formation.

Abrasive barrel also can design according to actual conditions, when material requires degree of grinding not high, as long as one is gone up abrasive barrel and a following abrasive barrel, also can not establish abrasive barrel, feed pipe directly leads to down in the abrasive barrel, and when needs material degree of grinding is thin (is μ m level as particle diameter), abrasive barrel can be established more than 2 up and down, make it that what be divided into and grind, sphere or clavate abrasive medium are housed in the abrasive barrel.

For realizing the big output of unit, also can set up twin shaft to drive, its structure is to use two motors, drives two eccentric shafts, two cover eccentric activators respectively, its kind of drive is by gear pair, band or electric axis transmission synchronously, guarantees two main shaft run-in synchronisms; Also can be a Motor Drive, drive two cover eccentric activators and several abrasive barrel work up and down.

The operation principle and the weakening process of this weakening formula Centrifugal vibration ore mill are (is example with single shaft list eccentric activator), after the motor energising starts, the eccentric main axis that connects with shaft coupling rotates, eccentric activator rotation by the bearing band, connecting plate also drives the abrasive barrel motion thereupon, the material that adds from charging aperture is ground with spherical or excellent type abrasive medium, obtain powder.Because the eccentric disc on the eccentric activator is provided with balancing weight, makes circular motion steady, can not produce big vibration, even start, stopping process have some small vibrations, also can eliminate by supporting weakening spring, can not pass to influences support or basis on the lathe.

The utility model compared with the prior art, the advantage that has is:

1. can eliminate substantially the influence of frame, spring, shaft coupling during dynamic load.

2. can improve crush force intensity significantly, the efficient height is realized energy-efficient purpose.

3. simple in structure, reduced investment, the during-operation service expense is low, reliable operation, safety.

4. easy to operate, the product smashing fineness is adjustable, need not add screening in addition.

5. wide adaptability can be used for mineral, industrial chemicals and product, and the pulverizing processing of construction material, than traditional ball mill efficiency height, speed is fast, and is lower than grinder costs such as Raymond mills again, easily operation.

Below in conjunction with accompanying drawing enforcement structure of the present utility model is described:

Fig. 1 is the front view of weakening formula Centrifugal vibration ore mill;

Fig. 2 is the side view of the weakening formula Centrifugal vibration ore mill of single shaft driving;

Fig. 3 is off-centre, the exciter structure figure in the weakening formula Centrifugal vibration ore mill;

Fig. 4 is the side view of the weakening formula Centrifugal vibration ore mill of twin shaft driving.

From figure, see, on the frame of the ore mill that single shaft drives motor 6 and eccentric activator 4 are arranged, motor reel links to each other with eccentric main axis 15 or eccentric bushing by shaft coupling 5, eccentric activator 4 is by little bearing 11, big bearing 12, bearing block 1, eccentric disc 13, balancing weight 14 constitutes, these parts all are contained on the eccentric main axis 15, connecting plate 3 is housed on the eccentric activator 4, connecting plate is equipped with abrasive barrel 2 and following abrasive barrel 9, abrasive barrel can be established several up and down, link to each other with communicating pipe 16 between them, frame 7 is bearing on support 10 or the basis, ground by supporting weakening spring 8.When the ore mill of single shaft drives,, the movement locus of the abrasive barrel cylindrical shell more than the main shaft is designed to the major axis horizontal ellipse for the ease of charging.Weaken crush efficiency in order to overcome the following abrasive material cylindrical shell of main shaft " center inert district ", designing its movement locus is the major axis vertical ellipse.For reaching this purpose, design down abrasive barrel to the gravity of the alignment of shafts apart from being the gravitational moment more than 1.3 times that goes up abrasive barrel, change the axial ratio of elliptical orbit by the ratio face of adjusting gravitational moment.

On the frame 7 of the ore mill that the twin shaft of Fig. 4 drives two motors or two eccentric main axis of a motor drives are housed, revolution synchronously is by gear pair, electric axis or be with transmission synchronously, and all the other structures and Fig. 1, Fig. 2, Fig. 3 are identical.

Claims

1. weakening formula Centrifugal vibration ore mill, comprise charging aperture, discharging opening, abrasive barrel, frame, motor, it is characterized in that: the axle of motor (6) connects with eccentric main axis (15) or eccentric bushing by shaft coupling (5), eccentric activator (4) is housed on eccentric main axis or the eccentric bushing, connecting plate (3) is housed on the eccentric activator, with last abrasive barrel (2), following abrasive barrel (9) links to each other, steel ball or clavate milling medium are housed in the abrasive barrel, abrasive barrel has communicating pipe (16) to communicate up and down, motor (6) is directly installed on the frame (7), eccentric activator (4) also is placed on the frame (7) by the bearing block (1) at two ends, supporting weakening spring (8) is housed under the frame (7), and places on support (10) or the basis, ground.

2. weakening formula Centrifugal vibration ore mill according to claim 1, it is characterized in that eccentric activator (4) is made of little bearing (11), big bearing (12), eccentric disc (13) and balancing weight (14), little bearing (11), big bearing (12), eccentric disc (13) all are contained on eccentric main axis (15) or the eccentric bushing, balancing weight (14) is housed on the eccentric disc (13), and little bearing (11) is placed on the frame (7) by bearing block (1).

3. weakening formula Centrifugal vibration ore mill according to claim 1, it is characterized in that: ore mill is single shaft or cross-compound arrangement, single-shaft configuration is that a motor (6) drives an eccentric main axis (15), cross-compound arrangement is that two motors drives two eccentric main axis or two eccentric main axis of an electronic motor drives, the corresponding two cover eccentric activators (4) that are equipped with of eccentric main axis, its run-in synchronism is by gear pair, band or electric axis transmission synchronously.

4. weakening formula Centrifugal vibration ore mill according to claim 1 is characterized in that: going up abrasive barrel (2) and following abrasive barrel (9) can be for single or multiple, and last abrasive barrel can not established yet, and links to each other with communicating pipe (16) between the abrasive barrel.