CN205392613U - Be provided with milling machine of thrust device in grinding roller - Google Patents

Abstract

The utility model discloses a be provided with milling machine of thrust device in grinding roller, including the base with set up the organism in the base top, be provided with in the organism by grinding the mechanism that rolls that the ring sum grinding roller forms, the working shaft lower extreme of perpendicular setting is connected with the power drive mechanism of bottom, working shaft in the organism be the prism structure, and the outer roller diameter that rolls of grinding roller approaches the internal diameter that grinds the ring, through the bearing and roll grinding roller core clearance suit that the outer roller combined together on the working shaft and with the working shaft synchronous revolution, be provided with the thrust device between grinding roller in -core wall and working shaft. The utility model discloses compact structure has overturned the structure principle of traditional raymond mill, has improved the work efficiency and the crocus quality of mill greatly. Grind the intra -annular and do not keep the ventilation space, make the outer roller diameter that rolls of grinding roller approach the internal diameter that grinds the ring, set up the thrust device between working shaft and grinding roller core to broken power is done to the augmented thrust, and equipment parameter matching is more flexible, realizes the optimality ability.

Description

The flour mill of thrust device it is provided with in grinding roller

Technical field

This utility model relates to flour mill, especially relates to be provided with in a kind of grinding roller the flour mill of thrust device.

Background technology

Current flour mill kind mainly includes traditional ball mill, Raymond mill, uses less letter roller mill, uses the more Vertical Mill accounting for dominant position, as the roller-crushing mill etc. of pre-grinding.The crushing efficiency of flour mill and its crumbling method are in close relations, and above-mentioned flour mill is summed up from crumbling method can include following several form: in Fig. 1 a, ball to ball (ball mill), b, cylinder to cylinder (roller-crushing mill or rod milling), c, cylinder to plane (square position Vertical Mill), d, cylinder to inner ring surface (Raymond mill or Conus betulinus).It could be theoretically argued that, the crushing efficiency of these several crumbling methods should be increase successively from a to d, but employs up in reality with fastest developing speed be not Raymond mill but square position Vertical Mill.This is because the abrasive body of square position Vertical Mill (grinding roller) size is unrestricted, that can do is very big, substantially increase the yield of grinding machine, so existing big model grinding machine is almost monopolized by Vertical Mill, simultaneously in recent years roller-crushing mill also due to roller size is unrestricted and fast-developing and grow up, be on the contrary the of a relatively high Raymond mill of crushing efficiency and Conus betulinus development comparatively slow.This is because the abrasive body size of this kind of grinding machine is by the restriction of bull ring or other structural elements, cause its difficulty that maximizes.

As the grinding roller assembly of existing Raymond mill (or claim overhang roll mill) under main shaft drives around motion of main shaft time, grinding roller presses to bull ring under the influence of centrifugal force, roll the material being between grinding roller and bull ring, owing to there is the central shaft of transmission, also need to reserve the airspace for Matter Transfer in bull ring simultaneously, so the diameter of grinding roller is certainly less than 0.5 times of bull ring diameter, have impact on the maximization of Raymond mill development.Tradition Raymond mill is to utilize centrifugal force to roll material simultaneously, grinding pressure is in square with speed, circulation in order to realize material also needs to perching knife and is scooped up by material, such perching knife scoop up the evacuation time of the speed of material and grinding pressure, material etc. key element all with velocity correlation, that is all necessary height correlation of above lot of essential factors, simultaneous adaptation is in same speed.Assume that the Raymond mill of certain model needs these hardness such as grinding bentonite, limestone, quartz sand to differ the material of several times, the grinding pressure then needed during the work of this grinding machine is also required to difference several times, and it is highly difficult for now requiring that this Raymond mill differs maintenance normal operation under the situation of several times in speed.It was verified that workload difference ± 10% cisco unity malfunction of Raymond mill, this is also that Raymond mill uses one of limited major reason.

Summary of the invention

The purpose of this utility model is in that to provide a kind of flour mill being provided with thrust device in grinding roller, and this flour mill changes the structural principle of Raymond mill, makes the key elements such as speed, pressure, air quantity each independent, improves production efficiency and the grinding quality of Raymond mill.

For achieving the above object, this utility model can take following technical proposals:

The flour mill of thrust device it is provided with in grinding roller described in the utility model, including base and be arranged on the body above described base, being provided with the rolling body being made up of bull ring and grinding roller in described body, vertically disposed working shaft lower end extends out from described base and is connected with the power-driven mechanism being positioned at bottom；The working shaft being positioned at described body is prism structure, described grinding roller roll the outer roller diameter internal diameter close to described bull ring, by bearing with described roll the grinding roller core gap that outer roller combines be sleeved on described working shaft and with described working shaft synchronous rotary, between described grinding roller in-core wall and described working shaft, be provided with thrust device.

For making its compact conformation, offering oil leab on described working shaft, described oil leab is connected with described bearing cavity directly or by external oil duct.

Described thrust device includes at least one hole being opened on described working shaft axis body, is provided with top and presses the spring of described roller core in described hole.

Described thrust device includes at least one hole being opened on described working shaft, is placed with top and presses hydraulic jack or the cylinder of described grinding roller core in described hole, is longitudinally opened in the high-pressure oil duct on described working shaft or air flue and described hydraulic jack or cylinders leads to.

Rolling quality for what improve grinding machine, described rolling body can overlap on the working shaft being stacked in described body more, and the bull ring powder spout being placed in top enters powder passage with the bull ring of lower section and is connected.

Described organism bottom meal outlet is arranged below spreading disk, and described spreading disk is arranged below guide cone-shaped hood, and the powder air channel import of inhaling being opened on described organism sidewall is positioned at the top of described guide cone-shaped hood.

Described working shaft is rectangular cylinder, naturally it is also possible to for conventional non-cylinder structures such as pentagonal prism bodies.

The utility model has the advantage of compact conformation, overturned the structural principle of traditional Raymond mill, substantially increase work efficiency and the milling quality of grinding machine.Owing to not staying the space of ventilation (to be transferred in air channel beyond bull ring in bull ring, as on organism sidewall), not by the restriction of minimum draught area in bull ring, what can make grinding roller rolls the outer roller diameter internal diameter close to bull ring, now the radius of gyration of barycenter is close to zero, and thrust device is set between working shaft and grinding roller core, the grinding roller doing planetary motion around bull ring is made no longer to do broken desirable pressure with centrifugal force, but change into and do crushing power with augmented thrust, break away from grinding roller pressure dependence in this constraints of centrifugal force of grinding roller assembly, achieve automatically controlling of grinding pressure, break away from the restriction relation between speed and pressure, roll powder and can completely abolish again the effect of perching knife in bull ring outer circulation, make speed, pressure, the key elements such as air quantity are each independent, equipment each parameter coupling is more flexible, realize optimum performance.

Accompanying drawing explanation

Fig. 1 is several broken form of existing flour mill.

Fig. 2 is structural representation of the present utility model.

Fig. 3 is the location diagram between bull ring in Fig. 2, grinding roller and working shaft.

Fig. 4 be in Fig. 2 grinding material roll path schematic diagram.

Detailed description of the invention

As shown in Figure 2, the flour mill of thrust device it is provided with in grinding roller described in the utility model, including base 1 be arranged on the body 2 above base 1, the rolling body being made up of bull ring 3 and grinding roller it is provided with in body 2, vertically disposed working shaft 4 lower end from base 1 extend out be positioned at bottom power-driven mechanism 5(when grinding machine model is bigger, driving mechanism can adopt reductor, when grinding machine model is less, driving mechanism can adopt belt pulley) it is connected, (during actual manufacture, the upper end of working shaft 4 also can be extended out outside body 2, drive spreading disk, outer oil duct, air flue rotates together with working shaft 4 simultaneously, so when there is support at working shaft about 4 two ends simultaneously, the rigidity of whole equipment can be increased)；The working shaft 4 being positioned at body 2 is four prisms cylinder structure (being certainly alternatively the non-cylinder structure such as pentagonal prism or six prisms), grinding roller roll outer roller 6 diameter internal diameter close to bull ring 3, by bearing 7 with roll grinding roller core 8 gap that outer roller 6 combines be sleeved on working shaft 4 and with working shaft 4 synchronous rotary, the oil leab 9 being opened in working shaft 4 epimere is connected with bearing cavity directly or by external oil duct, has been horizontally disposed with thrust device between grinding roller core 8 inwall and working shaft 4；At least one lateral aperture that thrust device used by this utility model includes being opened on working shaft 4 is (same, if needing relatively high thrust, can be offered two or more), being placed with the hydraulic jack 10 of top pressure grinding roller core 8 in lateral aperture, the high-pressure oil duct 11 being longitudinally opened on working shaft 4 is connected (hydraulic jack used can also replace with cylinder) with hydraulic jack 10.Certainly for realizing this function, thrust device has numerous embodiments, as offered at least one lateral aperture (if needing relatively high thrust, can offer two or more) on working shaft, is provided with the spring of top press roll core in lateral aperture.

The outer roller 6 that rolls of grinding roller can be done greatly by flour mill of the present utility model, exceedes mill Ring current distribution, makes working shaft 4 through grinding roller, directly drives grinding roller core 8 to do planetary motion, rolls outer roller 6 around grinding roller core 8 rotation.Produce broken desirable pressure by the thrust of hydraulic jack 10, thus break away from grinding roller pressure dependence in this constraints of centrifugal force of grinding roller assembly.

Due to inside bull ring without reserved draught area, the outer roller 6 that rolls of grinding roller can be made to accomplish maximum in theory, make the efficiency of grinding machine reach the highest.Meanwhile, during flour mill of the present utility model work, each parameter of the evacuation time of material, grinding pressure, rolling speed, main engine power can adjust respectively, is independent of each other, and can make to reach best coupling between each parameter.

When traditional flour mill works, when the material hardness rolled brings up to Mohs' hardness six grades from Mohs' hardness three grades, the crushing stress of its material improves nearly three times, it is assumed that keep other parameter constants, now rely on merely centrifugal force and pressure is improved three times, it is desirable to speed improvesTimes；This means that the frictional force of perching knife improves 2.3 times～3 times, the exhaust velocity of material also to improveTimes.If now exhaust velocity has reached the limit, then overall performance will be unable to improve, and just from ceiling structure, equipment reaches the possibility of optimal performance for this.If adopting structure of the present utility model, grinding pressure can pass through to adjust oil cylinder working-pressure and control, and namely can adjust its grinding pressure according to the difference rolling material, unrelated with speed or relation is only small, it is possible to make each parameter coupling more flexible, thus realizing equipment optimum performance.

During work, in this utility model, the position between bull ring, grinding roller and working shaft is as shown in Figure 3, the thrust promotion of oil cylinder 10 rolls outer roller 6 and presses to bull ring 3, when the locating surface of grinding roller core 8 with main shaft 4 contacts, roll the gap between outer roller 6 and bull ring 3 close to zero, but roll and between outer roller 6 and bull ring 3, do not have contact.Pottery grinding roller (rolling outer roller 6) and the use of pottery bull ring 3 so can be made to be possibly realized, and the grinding for solution high rigidity material or the material that iron-holder has particular/special requirement provides a kind of new solution.

After grinding roller diameter increases, time between the engaging-in grinding roller of material and bull ring, to experience longer distance.When grinding roller changes from small to big, its engaging-in distance of material for same diameter is increased to AC arc length by AB arc length, as shown in Figure 4, this is most important to the discharge of gas in material when solving pulverized powder, otherwise the gas in dust can cause judder after being squeezed and cannot normal operation.In actually used, for improving the milling quality of grinding machine, it is ensured that the stress balance of working shaft 4 and base 1, rolling body can overlap on the working shaft 4 being stacked in body more, and the bull ring powder spout above being placed in enters powder passage with the bull ring of lower section and is connected.

During flour mill of the present utility model work, grinding material can adopt wind circulating or other mechanical hoisting type endless form.When adopting wind circulating, it is possible to being arranged below spreading disk 12 at organism bottom meal outlet, spreading disk 12 is arranged below guide cone-shaped hood 13, powder air channel 14 import of inhaling being opened on organism sidewall is positioned at the top of guide cone-shaped hood 13.

During work, material enters grinding machine from top, rolls outer roller 6 and presses to bull ring 3 under the promotion of oil cylinder 10, rolls outer roller 6 at the driving further aspect of main shaft 4 and makees planetary rotation autobiography on the one hand, material flows downward under gravity, enters and is rolled when rolling between outer roller 6 and bull ring 3.Material flow process from top to bottom is repeatedly rolled, eventually fall on spreading disk 12, spreading disk 12 inhales the import department in powder air channel 14 by throwing to after material scattering, fineness reaches the wind that a degree of material flowed up and takes away, together with thicker material is collected after deriving along guide cone-shaped hood 13 with impurity, by other techniques, the thick material needing to continue grinding is sent into grinding machine and continue grinding, by underproof Impurity removal.

In this utility model, lubricating oil flows directly into bearing chamber by the oil leab 9 that working shaft 4 upper section central position is offered and bearing is lubricated, bearing chamber can also be flowed into by the sub-runner being connected with this oil leab 9 and external runner it is lubricated, this mode both can guarantee that the lubrication of each parts in bearing chamber, ensure that again the pressure in bearing chamber is more than outside ambient pressure, avoid dust to enter, seal reliable.The high-pressure oil duct 11(longitudinally offered in the bottom of working shaft 4 can be opened in the center of working shaft 4, the diameter duct less than 12 millimeters) can ensure that hydraulic jack 10 produces enough pressure and promotes grinding roller work.

Claims (7)

1. in a grinding roller, it is provided with the flour mill of thrust device, including base (1) and the body (2) being arranged on described base (1) top, being provided with the rolling body being made up of bull ring (3) and grinding roller in described body (2), vertically disposed working shaft (4) lower end extends out from described base (1) and is connected with the power-driven mechanism (5) being positioned at bottom；It is characterized in that: the working shaft (4) being positioned at described body (2) is prism structure, described grinding roller roll outer roller (6) diameter internal diameter close to described bull ring (3), by bearing (7) with described roll grinding roller core (8) gap that outer roller (6) combines be sleeved on described working shaft (4) upper and with described working shaft (4) synchronous rotary, between described grinding roller core (8) inwall and described working shaft (4), be provided with thrust device.

2. in grinding roller according to claim 1, it is provided with the flour mill of thrust device, it is characterised in that: offering oil leab (9) on described working shaft (4), described oil leab (9) is connected with described bearing cavity.

3. in grinding roller according to claim 1, it is provided with the flour mill of thrust device, it is characterised in that: described thrust device includes at least one hole being opened on described working shaft axis body, is provided with top and presses the spring of described roller core in described hole.

4. in grinding roller according to claim 1, it is provided with the flour mill of thrust device, it is characterized in that: described thrust device includes at least one hole being opened on described working shaft (4), it is placed with top in described hole and presses hydraulic jack (10) or the cylinder of described grinding roller core (8), be longitudinally opened in the high-pressure oil duct (11) on described working shaft (4) or air flue and described hydraulic jack (10) or cylinders leads to.

5. in grinding roller according to claim 1, it is provided with the flour mill of thrust device, it is characterised in that: the many sets of described rolling body are stacked on the working shaft (4) in described body, and the bull ring powder spout above being placed in enters powder passage with the bull ring of lower section and is connected.

6. in grinding roller according to claim 1, it is provided with the flour mill of thrust device, it is characterized in that: described organism bottom meal outlet is arranged below spreading disk (12), described spreading disk (12) is arranged below guide cone-shaped hood (13), and suction powder air channel (14) import being opened on described organism sidewall is positioned at the top of described guide cone-shaped hood (13).

7. in grinding roller according to claim 1, it is provided with the flour mill of thrust device, it is characterised in that: described working shaft (4) is rectangular cylinder.