CN217614932U - Bauxite grinding device with reciprocating grinding function - Google Patents

Abstract

The utility model discloses a bauxite milling equipment that possesses reciprocal grinding function, including lapping screening case, charge door, the grinder that relapses, grind feeding device repeatedly, pat screening plant, finished product collection lower slide, finished product collection mouth, garbage collection mouth and reinforced cat ladder repeatedly, the charge door is located and is repeatedly ground on the screening case, grind repeatedly on the screening case repeatedly, grind feeding device repeatedly and locate and repeatedly grind on the screening case repeatedly. The utility model belongs to the technical field of bauxite processing, specifically a bauxite milling equipment who possesses reciprocal grinding function, the effectual bauxite of having solved on the existing market once grinds thoroughly not make the uneven problem of grinding back granule, powder bauxite quality is poor, carries out hierarchical screening, and the circulation is once more ground to unqualified bauxite after screening through the bauxite after once grinding, has reached the effect that all bauxite of not wasting and all bauxite grind all qualifiedly.

Description

Bauxite grinding device with reciprocating grinding function

Technical Field

The utility model belongs to the technical field of the bauxite processing, specifically indicate a bauxite milling equipment that possesses reciprocal grinding function.

Background

Bauxite is also called alumina or bauxite, the main component of which is hydrated alumina containing impurities, generally is a soil-like or stone-like mineral formed by chemical weathering or exogenous action, contains some impurity minerals such as clay minerals, iron minerals, titanium minerals and clastic heavy minerals, and the composition of the hydrated alumina is extremely complex and is a general name of various hydrated alumina ores with different geological sources, such as boehmite, diaspore and gibbsite; some refractory materials are composed of diaspore and kaolinite and are mainly used for smelting aluminum and preparing refractory materials.

Firstly, bauxite raw materials are fed into a calcining furnace to be calcined at high temperature, the calcined materials are crushed by a jaw crusher or a hammer crusher, then the crushed materials need to be subjected to grinding homogenization treatment, the common bauxite grinding machine is a vertical grinding machine, the crushed bauxite materials are powdery or blocky, when the earthy bauxite is ground by a grinding roller in the vertical grinding machine, the stone bauxite buried in the vertical grinding machine can be protected, so that the grinding capacity of the vertical grinding machine is reduced, meanwhile, the blocky bauxite moves to the edge of a grinding disc due to centrifugal force when the grinding disc rotates, and because of gaps among the grinding rollers, some bauxite blocks cannot be ground by the grinding roller in the movement process, but are directly thrown to the edge of the grinding disc, the useless work of feeding is increased, energy is wasted, and a material returning mechanism needs to be increased.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a bauxite milling equipment that possesses reciprocal grinding function, the effectual bauxite that has solved on the existing market once grinds thoroughly makes the uneven problem of grinding back granule, powder bauxite quality poor, carries out hierarchical screening, and the screening back is to unqualified bauxite circulated once more grinding to the bauxite after once grinding, has reached the effect that all bauxite of not wasting and all bauxite grind all qualifiedly.

The utility model discloses the technical scheme who takes as follows: the utility model provides a bauxite milling equipment that possesses reciprocal grinding function, including lapping screening case, charge door, grinder repeatedly, grind feeding device repeatedly, pat screening device, finished product collection lower slide, finished product collection mouth, garbage collection mouth and reinforced cat ladder repeatedly, the charge door is located on the lapping screening case repeatedly, grinder repeatedly locates on the lapping screening case repeatedly, grind on feeding device repeatedly locates on the lapping screening case repeatedly and be the symmetry setting with grinder repeatedly, pat on screening device locates the lapping screening case repeatedly, the finished product is collected the lower slide and is located and grind the screening incasement repeatedly, the finished product is collected on the mouth locates to grind the screening case repeatedly lateral wall repeatedly, the garbage collection mouth is articulated to be located on the lapping screening case lateral wall repeatedly and is the symmetry setting with the finished product collection mouth, on the reinforced cat ladder was located and grind the screening case repeatedly, the mesh that the grinding supported has been realized to grind the charge door, grinder has realized the effect of grinding repeatedly, and grinder has realized the effect of lapping through going up and down the slider that unqualified bauxite granule conveying will be carried out again to the qualified bauxite collection lower slide, has reached the qualified grinding effect of lapping of finished product collection lower slide, has collected the mesh of grinding screening effect after the charge door, has reached the qualified bauxite collection effect of grinding.

Preferably, grinder includes grinding motor, grinding action wheel, grinds from driving wheel, grinding roller one and grinding roller two, grinding motor locates on the repeated grinding screening case, grind on the output shaft that grinding motor was located to the action wheel, grind from the driving wheel meshing locate on grinding the action wheel, it locates to grind the screening incasement repeatedly and grinds the action wheel and link to each other to grind roller one and rotate, grinding roller two rotate locate grind screening incasement repeatedly and with grind from the driving wheel continuous, grinding motor drives and grinds the action wheel and grind from the driving wheel rotation to the realization drives grinding roller one and grinds roller two and rotates and reach the effect of grinding.

In order to better realize the effect of regrinding, the repeated grinding and feeding device comprises a first support piece, a lifting motor, a lifting screw, a second support piece, a guide rod, a repeated grinding and screening box and a lower collecting sliding plate, wherein the first support piece is arranged on the side wall of the repeated grinding and screening box, the lifting motor is arranged on the first support piece, the lifting screw is rotatably arranged on the lifting motor and is connected with the output of the lifting motor, the second support piece is arranged on the side wall of the repeated grinding and screening box, the guide rod is arranged on the second support piece, one end of the repeated grinding and collecting box is in threaded connection with the lifting screw, the other end of the repeated grinding and collecting box is slidably arranged on the guide rod, the lower collecting sliding plate is arranged on the repeated grinding and screening box and is arranged on one side close to a waste collecting port, the lifting motor drives the lifting screw to rotate to realize the effect that the repeated grinding and collecting box ascends and descends on the guide rod to convey unqualified bauxite to be reground, and the lower collecting sliding plate achieves the collecting purpose.

In order to reach the purpose of the vibration ejection of compact more soon, pat screening plant including screening motor, screening drive wheel, drive belt, screening bat the axle, eccentrically pat screening wheel and bauxite screening board, the screening motor is located and is ground on the screening case lateral wall repeatedly and locate the one side near reinforced cat ladder, the screening drive wheel rotates to be located and grinds repeatedly on the screening case, the drive belt twines on locating the screening drive wheel, the screening is patted the axle and is rotated to be located and grind repeatedly the screening incasement and link to each other with the screening drive wheel, eccentrically patting the screening wheel and is located and sieve and clap epaxially, bauxite screening board is located and is ground repeatedly the screening incasement and locate eccentric top of patting the screening wheel, and the screening motor drives the screening drive wheel through the drive belt and rotates, realizes driving the screening and beats the axle and rotate, reaches to pat eccentric screening wheel pivoted purpose then, and eccentrically patts the screening wheel and pat the bauxite screening board and realize screening qualified and unqualified bauxite granule's purpose in the rotation process.

Further, the bauxite screening board is located eccentric pat screening wheel and is ground between the roller one, it is parallel arrangement with grinding roller two to grind roller one, bauxite screening board and the contained angle of grinding between the roller one are the acute angle setting, the finished product is collected the slide and is located eccentric pat screening wheel and grind repeatedly between the screening case diapire, the contained angle that slide and bauxite screening board between was collected down to the finished product is the acute angle setting, the contained angle of collecting down between slide and the bauxite screening case lateral wall is the obtuse angle setting with the contained angle of grinding repeatedly between the screening case lateral wall.

Further, grind the collecting box repeatedly and be the setting of cuboid trough-shaped, the finished product is collected the lower slide and is the setting of cuboid platelike, bauxite screening board is the netted setting of cuboid, the screening drive wheel is equipped with three groups, the screening is patted the axle and is equipped with three groups, eccentric patting screening wheel is equipped with a plurality of groups and eccentric number of patting screening wheel equals the multiple of three, eccentric patting screening wheel is the eccentric wheel setting.

When the bauxite grinding machine is used, bauxite is added into a repeated grinding and screening box through a charging port by a user, the bauxite firstly reaches the upper parts of a first grinding roller and a second grinding roller, the user starts a grinding motor, the grinding motor works to drive a grinding driving wheel and a grinding driven wheel to work, so that the first grinding roller and the second grinding roller are driven to rotate to grind the bauxite into blocks, the size particles of the agglomerated bauxite are uneven and fall onto a bauxite screening plate, the user starts a screening motor at the moment, the screening motor drives a screening driving wheel to rotate, three groups of screening beating shafts are driven to rotate together through transmission of a transmission belt, the eccentric beating and screening wheel is driven to rotate, the bauxite screening plate is beaten in the rotating process, powdery bauxite particles falling on the bauxite screening plate are qualified bauxite, the bauxite particles which cannot fall off under the beating effect roll on the bauxite screening plate, and finally the bauxite particles flow into a repeated grinding and collecting box through a waste collecting port and a collecting lower sliding plate; at the moment, qualified powdery bauxite particles fall onto a finished product collecting lower sliding plate and slide out of a finished product collecting port under the action of inclination to be collected, a user starts a lifting motor after unqualified bauxite particles are on a repeated grinding collecting box, the lifting motor drives a lifting screw to rotate, the purpose of driving the repeated grinding collecting box to ascend is achieved, then the user climbs a feeding crawling ladder, bauxite particles in the repeated grinding collecting box ascending to a high position are taken out and added into the feeding port again, the actions are circulated, and finally the effect of collecting the qualified powdery bauxite particles after repeated grinding is achieved.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: the bauxite grinding device with the reciprocating grinding function effectively solves the problems that bauxite cannot be ground thoroughly once in the existing market, the ground particles are uneven, and the quality of powder bauxite is poor, and achieves the effects that all bauxite is not wasted and all bauxite is ground to be qualified by performing classification screening on the bauxite subjected to grinding once and performing circular grinding on unqualified bauxite again after screening.

Drawings

Fig. 1 is a schematic view of the overall structure of a bauxite grinding device with a reciprocating grinding function according to the present invention;

fig. 2 is a schematic structural view of another angle of the bauxite grinding apparatus with a reciprocating grinding function according to the present invention;

FIG. 3 is a cross-sectional view of a bauxite grinding apparatus with a reciprocating grinding function according to the present invention;

fig. 4 is a schematic diagram of an internal structure of a bauxite grinding device with a reciprocating grinding function according to the present invention.

Wherein, 1, grind screening case repeatedly, 2, the charge door, 3, grinder repeatedly, 4, grind feeding device repeatedly, 5, pat screening plant, 6, the lower slide is collected to the finished product, 7, the finished product is collected the mouth, 8, the garbage collection mouth, 9, reinforced cat ladder, 10, grinding motor, 11, grinding action wheel, 12, grind from the driving wheel, 13, grinding roller one, 14, grinding roller two, 15, support piece one, 16, elevator motor, 17, the lifting screw, 18, support piece two, 19, the guide bar, 20, grind the collecting box repeatedly, 21, collect the lower slide, 22, screening motor, 23, the screening drive wheel, 24, the drive belt, 25, the screening is clapped the axle, 26, eccentric beating screening wheel, 27, bauxite screening board.

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figures 1, 2, 3 and 4, the bauxite milling device with the reciprocating grinding function comprises a repeated grinding and screening box 1, a feeding port 2, a repeated grinding device 3, a repeated grinding and feeding device 4, a flapping and screening device 5, a finished product collecting lower sliding plate 6, a finished product collecting port 7, a waste collecting port 8 and a feeding crawling ladder 9, wherein the feeding port 2 is arranged on the repeated grinding and screening box 1, the repeated grinding device 3 is arranged on the repeated grinding and screening box 1, the repeated grinding and feeding device 4 is arranged on the repeated grinding and screening box 1 and is symmetrical to the repeated grinding device 3, the flapping and screening device 5 is arranged on the repeated grinding and screening box 1, the finished product collecting lower sliding plate 6 is arranged in the repeated grinding and screening box 1, and the finished product collecting port 7 is arranged on the side wall of the repeated grinding and screening box 1, garbage collection mouth 8 articulates locates on 1 lateral wall of regrinding screening case and is the symmetry setting with finished product collection mouth 7, reinforced cat ladder 9 is located on regrinding screening case 1, regrinding screening case 1 has realized the purpose of grinding the support, charge door 2 plays reinforced effect, the effect of grinding has been realized to regrinding grinding device 3 repeatedly, regrind feeding device 4 through going up and down with unqualified bauxite granule conveying once more, pat screening plant 5 and realized the mesh of grinding the back screening of bauxite, slide 6 and finished product collection mouth 7 have realized the effect of gliding collection qualified bauxite under the finished product is collected, garbage collection mouth 8 reaches the effect of collecting unqualified bauxite, reinforced cat ladder 9 plays the mesh of reinforced eminence support.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the repeated grinding device 3 includes a grinding motor 10, a grinding driving wheel 11, a grinding driven wheel 12, a first grinding roller 13 and a second grinding roller 14, the grinding motor 10 is disposed on the repeated grinding and screening box 1, the grinding driving wheel 11 is disposed on an output shaft of the grinding motor 10, the grinding driven wheel 12 is engaged with the grinding driving wheel 11, the first grinding roller 13 is rotatably disposed in the repeated grinding and screening box 1 and connected to the grinding driving wheel 11, the second grinding roller 14 is rotatably disposed in the repeated grinding and screening box 1 and connected to the grinding driven wheel 12, the grinding motor 10 drives the grinding driving wheel 11 and the grinding driven wheel 12 to rotate, thereby driving the first grinding roller 13 and the second grinding roller 14 to rotate to achieve the grinding effect.

As shown in fig. 1, 2, 3 and 4, the repeated grinding and feeding device 4 includes a first support member 15, a lifting motor 16, a lifting screw 17, a second support member 18, a guide rod 19, a repeated grinding and collecting box 20 and a collecting lower sliding plate 21, the first support member 15 is disposed on the side wall of the repeated grinding and screening box 1, the lifting motor 16 is disposed on the first support member 15, the lifting screw 17 is rotatably disposed on the lifting motor 16 and connected to the output of the lifting motor 16, the second support member 18 is disposed on the side wall of the repeated grinding and screening box 1, the guide rod 19 is disposed on the second support member 18, one end of the repeated grinding and collecting box 20 is threadedly connected to the lifting screw 17, the other end of the repeated grinding and collecting box 20 is slidably disposed on the guide rod 19, the collecting lower sliding plate 21 is disposed on the repeated grinding and collecting box 20 and disposed on the side close to the scrap collecting opening 8, the lifting motor 16 drives the lifting screw 17 to rotate the repeated grinding and collecting box 20 to ascend and descend on the guide rod 19 so as to convey unqualified bauxite, and the collecting lower sliding plate 21 achieves the collecting purpose.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the flapping and screening device 5 includes a screening motor 22, a screening transmission wheel 23, a transmission belt 24, a screening flapping shaft 25, an eccentric flapping screening wheel 26 and an bauxite screening plate 27, the screening motor 22 is disposed on the side wall of the repeated grinding and screening box 1 and is disposed on one side close to the feeding ladder 9, the screening transmission wheel 23 is rotatably disposed on the repeated grinding and screening box 1, the transmission belt 24 is wound on the screening transmission wheel 23, the screening flapping shaft 25 is rotatably disposed in the repeated grinding and screening box 1 and is connected with the screening transmission wheel 23, the eccentric flapping screening wheel 26 is disposed on the screening flapping shaft 25, the bauxite screening plate 27 is disposed in the repeated grinding and screening box 1 and is disposed above the eccentric flapping screening wheel 26, the screening motor 22 drives the screening transmission wheel 23 to rotate through the transmission belt 24, the purpose of driving the screening flapping shaft 25 to rotate is achieved, and then the purpose of rotating the eccentric flapping wheel 26 is achieved, and the eccentric flapping wheel 26 performs the purpose of flapping of qualified bauxite screening particles and qualified particles on the bauxite screening plate 27 in the rotation process.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, bauxite screening plate 27 is located between eccentric flapping screening wheel 26 and the grinding roller 13, grinding roller 13 and grinding roller two 14 are parallel arrangement, the included angle between bauxite screening plate 27 and grinding roller 13 is acute angle setting, finished product collection lower sliding plate 6 is located between eccentric flapping screening wheel 26 and the repeated grinding screening box 1 bottom wall, the included angle between finished product collection lower sliding plate 6 and bauxite screening plate 27 is acute angle setting, the included angle between collection lower sliding plate 21 and the repeated grinding screening box 1 side wall is obtuse angle setting.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, grind collecting box 20 repeatedly and be the setting of cuboid trough-like, finished product collection lower sliding plate 6 is the setting of cuboid platelike, bauxite screening board 27 is the netted setting of cuboid, and screening drive wheel 23 is equipped with three groups, and screening is patted the axle 25 and is equipped with three groups, and eccentric patting screening wheel 26 is equipped with a plurality of groups and the number of eccentric patting screening wheel 26 equals the multiple of three, and eccentric patting screening wheel 26 is the eccentric wheel setting.

When the bauxite repeated grinding and screening box is used, bauxite is added into the repeated grinding and screening box 1 through the feeding port 2 by a user, the bauxite firstly reaches the upper part of the first grinding roller 13 and the second grinding roller 14, at the moment, the user starts the grinding motor 10, the grinding motor 10 works to drive the grinding driving wheel 11 and the grinding driven wheel 12 to work, so that the first grinding roller 13 and the second grinding roller 14 are driven to rotate to grind the bauxite into blocks, the size particles of the formed bauxite are uneven and fall onto the bauxite screening plate 27, at the moment, the user starts the screening motor 22, the screening motor 22 drives the screening driving wheel 23 to rotate, the three groups of screening beating shafts 25 are driven to rotate together through the driving belt 24, the eccentric beating and screening wheel 26 is driven to rotate, the bauxite screening plate 27 is beaten in the rotating process, powdery bauxite particles falling through the net holes in the bauxite screening plate 27 are qualified bauxite, and the bauxite particles which cannot fall onto the bauxite screening plate 27 under the beating action are finally rolled and flow into the repeated grinding and screening box 20 through the waste collecting port 8 and the collecting lower sliding plate 21; at this moment, qualified powdery bauxite particles fall onto the finished product collecting lower sliding plate 6 and slide out through the finished product collecting port 7 under the action of inclination to be collected, and after unqualified bauxite particles are on the repeated grinding collecting box 20, a user starts the lifting motor 16, at the moment, the lifting motor 16 drives the lifting screw 17 to rotate, so that the aim of driving the repeated grinding collecting box 20 to ascend is fulfilled, then the user climbs the feeding crawling ladder 9, bauxite particles in the repeated grinding collecting box 20 which ascends to a high position are taken out and added into the feeding port 2 again, the actions are circulated, and finally, the effect of collecting the qualified powdery bauxite particles after repeated grinding is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (6)

1. The utility model provides a bauxite milling equipment that possesses reciprocal grinding function which characterized in that: including lapping screening case, charge door, grinder, grinding feeding device repeatedly, pat screening plant, finished product collection lower slide, finished product collection mouth, garbage collection mouth and reinforced cat ladder repeatedly, the charge door is located on the lapping screening case repeatedly, grinder locates on the lapping screening case repeatedly, grind feeding device repeatedly and locate on the lapping screening case repeatedly and be the symmetry setting with grinder repeatedly, pat screening plant locate on the lapping screening case repeatedly, the lower slide is collected to the finished product locates in the lapping screening case repeatedly, the finished product is collected the mouth and is located on the lapping screening case lateral wall repeatedly, the garbage collection mouth articulates locates on the lapping screening case lateral wall repeatedly and is the symmetry setting with the finished product collection mouth, reinforced cat ladder is located on the lapping screening case repeatedly.

2. The bauxite grinding device with the reciprocating grinding function as claimed in claim 1, wherein: the repeated grinding device comprises a grinding motor, a grinding driving wheel, a grinding driven wheel, a first grinding roller and a second grinding roller, wherein the grinding motor is arranged on a repeated grinding screening box, the grinding driving wheel is arranged on an output shaft of the grinding motor, the grinding driven wheel is meshed with the first grinding roller, the first grinding roller rotates to be arranged in the repeated grinding screening box and is connected with the grinding driving wheel, and the second grinding roller rotates to be arranged in the repeated grinding screening box and is connected with the grinding driven wheel.

3. The bauxite grinding device with the reciprocating grinding function as claimed in claim 2, wherein: the repeated grinding and feeding device comprises a first support piece, a first lifting motor, a lifting screw, a second support piece, a guide rod, a repeated grinding collecting box and a lower collecting sliding plate, wherein the first support piece is arranged on the side wall of the repeated grinding and screening box, the lifting motor is arranged on the first support piece, the lifting screw is rotatably arranged on the lifting motor and is connected with the output of the lifting motor, the second support piece is arranged on the side wall of the repeated grinding and screening box, the guide rod is arranged on the second support piece, one end of the repeated grinding collecting box is connected with the lifting screw in a threaded manner, the other end of the repeated grinding collecting box is slidably arranged on the guide rod, and the lower collecting sliding plate is arranged on the repeated grinding collecting box and is arranged on one side close to a waste collecting port.

4. The bauxite grinding apparatus having the reciprocating grinding function according to claim 3, wherein: pat screening plant including screening motor, screening drive wheel, drive belt, screening bat and beat the axle, eccentric pat screening wheel and alumyte screening board, the screening motor is located and is ground repeatedly on the screening case lateral wall and locate the one side that is close to reinforced cat ladder, the screening drive wheel rotates and locates on the repeated grinding screening case, the drive belt twines on locating the screening drive wheel, the screening is patted the axle and is rotated and locate and grind repeatedly the screening incasement and link to each other with the screening drive wheel, eccentric pat screening wheel is located and is sieved epaxially, alumyte screening board is located and is ground repeatedly the screening incasement and locate the top that the eccentric was patted the screening wheel.

5. The bauxite grinding device with the reciprocating grinding function as claimed in claim 4, wherein: the bauxite screening plate is located eccentric pat screening wheel and grinds between the roller one, it is parallel arrangement with grinding roller two to grind roller one, bauxite screening plate and the contained angle of grinding between the roller one are the acute angle setting, the slide is located eccentric pat screening wheel and is ground repeatedly between the screening case diapire under the finished product is collected, the contained angle that the finished product was collected between slide and the bauxite screening plate is the acute angle setting down, the contained angle of collecting between slide and the repeated grinding screening case lateral wall down is the obtuse angle setting.

6. The bauxite grinding device with the reciprocating grinding function as claimed in claim 5, wherein: grind the collecting box repeatedly and be the setting of cuboid trough-shaped, the finished product is collected the lower slide and is the setting of cuboid platelike, bauxite screening board is the netted setting of cuboid, the screening drive wheel is equipped with three groups, the screening is patted the axle and is equipped with three groups, eccentric patting screening wheel is equipped with a plurality of groups and eccentric patting screening wheel's quantity equals the multiple of three, eccentric patting screening wheel is the eccentric wheel setting.

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