CN205833269U - Outer circulation flour mill - Google Patents

Abstract

The utility model discloses a kind of outer circulation flour mill, including oblique pendulum-type pulverizing main frame and main frame external-circulation grading system, described main frame external-circulation grading system includes main frame elevator, grading, lifting machine, outer circulation high-effective classifying device and powder collector, the discharging opening bottom the pulverizing main frame charging aperture by pipeline connection grading, lifting machine, the discharging opening of the grading, lifting machine feed hopper by pipeline connection outer circulation high-effective classifying device, the hopper outlet of the outer circulation high-effective classifying device charging aperture by pipeline connection main frame elevator, the discharging opening of the main frame elevator material inlet by pipeline connection oblique pendulum-type pulverizing main frame top, the qualified products discharge nozzle connection powder collector of outer circulation high-effective classifying device.This utility model uses outer circulation high-effective classifying device to carry out the outer particle classifying of main frame, the task performance of flour mill, and simple in construction, low cost, manufacture handling ease is greatly improved, for the preferred unit of a new generation's flour mill.

Description

Outer circulation flour mill

Technical field

This utility model relates to powder body process equipment, a kind of outer circulation flour mill.

Background technology:

Flour mill is the wide variety of equipment of breeze industry.

In powder body tradition on the basis of circulation classification, flour mill has evolved to the powder body outer circulation classification stage, i.e. exists The powder body milled in pulverizing main frame enters the outer hierarchy system of machine by base blanking port.

The outer hierarchy system of described machine conventionally includes grading, lifting machine, return lifting machine, grader and cyclone separator,

Described grader is arranged on the cover cylinder with air-intaking box, and the discharging opening of grader substandard product is at the bottom of cover cylinder The hopper in portion, normal conditions, the powder entered from grader charging aperture is sticked together, even if under the action of the forces of the wind, Powder is hardly formed dust-like in dropping process, and most powder directly hopper bottom cover cylinder returns return lifting machine Participating in again milling of pulverizing main frame, the task performance so causing grader is low, and the production capacity ultimately resulting in flour mill is low.

To this end, the applicant's unit proposes the two kinds of property improved graders, respectively Application No. 2015209957812 " the outer circulation flour mill particle classifying device " of " external particle classifying device " and Application No. 2015209954104, by installing additional Rotate under drive mechanism drives plays powder dish, the powder material scattering of entrance is become dust-like, to improve the task performance of grader.

But in two kinds of particle classifying devices, due to the structure of clasfficiator self, play powder dish and can only be arranged under classification screen drum Side, the dust of formation gets to the stepped zone of classification screen drum with air-flow after rising, thus the task performance of grader still has The space promoted further.

Utility model content

To this end, the utility model proposes a kind of outer circulation flour mill using outer circulation high-effective classifying device, with further Improve the task performance of flour mill.

This utility model outer circulation flour mill, including pulverizing main frame and main frame external-circulation grading system, follows outside described main frame Ring hierarchy system includes main frame elevator, grading, lifting machine, outer circulation high-effective classifying device and powder collector, except that:

1, the base endoporus bottom center of described pulverizing main frame installs central shaft bracket, and mill is installed on described base endoporus top Ring, base upper end installation case, main frame material inlet is opened on the cover cap of case, and central shaft bracket is located in main frame main shaft bottom In and extend downwardly from base connect drive mechanism, main frame main shaft upper end install fixed roll frame, be provided with around main frame main shaft circumference uniform distribution Burnisher apparatus, described Burnisher apparatus includes grinding roller sleeve, grinding roller and shaft of grinding roller, and described grinding roller sleeve is by linkage inwardly lower section tiltedly Hanging on fixed roll frame, described grinding roller is installed on shaft of grinding roller below grinding roller sleeve and leans in the up big and down small taper grinding face of bull ring On；Described fixed roll frame is connected with spatula frame, and described spatula frame and central shaft bracket coaxial package, fixed roll frame is arranged over rotating coaxially Equal charging tray, main frame discharging opening is opened in bottom base endoporus by central shaft bracket, arranges circumference corresponding to main frame discharging opening equal What cloth was installed on spatula frame scrapes shovel board.

2, described outer circulation high-effective classifying device, including grader, described grader includes with in being located in cover cylinder and by passing The classification screen drum that moving axis drives, the drive mechanism of upper cover and left side or right side setting that described power transmission shaft stretches out cover cylinder is connected, point The qualified products discharge nozzle pass-out upper cover of level machine is also located at the opposite side of drive mechanism, and the charging aperture of described grader is opened in Lid, described charging aperture is forward and backward two sections of arc-shaped slots that diameter is more than classification screen drum, coaxially sets in cover cylinder corresponding to charging aperture Putting and driven by power transmission shaft and the equal charging tray with the annular of classifying screen jacket casing dress, on described equal charging tray, circumference uniform distribution is provided with radially or spiral Shape gets rid of hopper, the discharge chute mouth corresponding to getting rid of hopper be provided be installed on the distribution of upper cover lower circumference hit powder plate, set in upper covering Putting forward and backward passage, the lower end of forward and backward passage is respectively communicated with forward and backward arc-shaped slot, and the upper end of forward and backward passage is higher than passing Motivation structure and qualified products discharge nozzle the forward and backward discharging opening connecting the feed hopper being provided above, described grader is by cover cylinder It is installed on air-intaking box and makes classification screen drum be higher than air-intaking box, or cancel cover cylinder and upper cover is directly installed on air-intaking box and makes Classification screen drum is placed in air-intaking box, and the bottom connection hopper of described air-intaking box, the outlet of described hopper is for grader not Qualified products discharging opening.

3, the described main frame discharging opening charging aperture by pipeline connection grading, lifting machine, the discharging opening of described grading, lifting machine By the feed hopper of pipeline connection outer circulation high-effective classifying device, pipeline connection is passed through in the hopper outlet of outer circulation high-effective classifying device The charging aperture of main frame elevator, the discharging opening of main frame elevator passes through pipeline connection main frame material inlet, outer circulation high-effective classifying device Qualified products discharge nozzle connection powder collector.

For increasing ability of milling, described fixed roll frame is provided with and rotates coaxially and act on Burnisher apparatus to improve grinding forces Boosting mechanism, described boosting mechanism includes afterburning lever, power cylinder and compression spring, and described afterburning lever is corresponding to each grinding roller Set circumference uniform distribution is arranged, and the outer end of each afterburning lever is connected on the body above corresponding grinding roller sleeve hinge position, described reinforcing Cylinder circumference uniform distribution between equal charging tray and afterburning lever is arranged, and the piston rod of each power cylinder passes downwardly through external member or rod member top is pressed in Corresponding afterburning lever is inner, and described compression spring is set in piston rod and external member or rod member and is pressed in power cylinder and afterburning thick stick in advance Between bar.

For making the smooth guide of feed hopper, in described feed hopper, it is provided with turriform harmonious material device, the forward and backward tower of described turriform harmonious material device Face is provided with the forward and backward equal hopper of the forward and backward discharging opening guide to feed hopper, being arranged over by power transmission shaft band of turriform harmonious material device Move and to the batch mixing pan of forward and backward equal hopper uniform distribution powder.

The beneficial effects of the utility model:

1, in the outer circulation high-effective classifying device that this utility model outer circulation flour mill uses, arrange all corresponding to classification screen drum Powder dish and hit powder plate, carries out uniform distributing to the powder entered and breaks up and directly form dust around classification screen drum, reducing The lift of dust, further increases the classification efficiency of clasfficiator.

2, this utility model uses machine outer circulation separation finished product, it is simple to maintenance of equipment；Particularly it is configured with outer circulation efficient Clasfficiator, is greatly improved the task performance of flour mill；And simple in construction, low cost, manufacture handling ease, grind for a new generation The preferred unit of powder machine.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of embodiment of this utility model.

Fig. 2 is the structural representation of this utility model another embodiment.

Fig. 3 is the structural representation of the outer circulation high-effective classifying device in Fig. 1 embodiment.

Fig. 4 is the structural representation of the outer circulation high-effective classifying device in Fig. 2 in embodiment.

Fig. 5 is the A direction view in Fig. 3, Fig. 4.

Figure number identifies: 1, outer circulation high-effective classifying device；2, cover cylinder；3, power transmission shaft；4, classification screen drum；5, upper cover；6, transmission Mechanism；7, qualified products discharge nozzle；8, charging aperture；9, equal powder dish；10, powder plate is hit；11, passage；12, feed hopper；13, return air Case；14, frame；15, hopper；16, turriform harmonious material device；17, power cylinder；18, pulverizing main frame；19, base；20, central shaft bracket； 21, bull ring；22, case；23, main frame material inlet；24, cover cap；25, main frame main shaft；26, fixed roll frame；27, grinding roller sleeve；28, mill Roller；29, spatula frame；30, equal charging tray；31, main frame discharging opening；32, shovel flitch；33, grading, lifting machine；34, main frame elevator； 35, afterburning lever；36, gusset；37, compression spring；38, powder dish is got rid of；39, discharging opening；40, column.

Detailed description of the invention

The technical solution of the utility model is described further by illustrated embodiment below in conjunction with the accompanying drawings.

This utility model outer circulation flour mill includes pulverizing main frame 18, and is promoted by outer circulation high-effective classifying device 1, main frame The main frame external-circulation grading system that machine 34, extension set elevator 33 and powder collector are constituted.

Described outer circulation high-effective classifying device 1, its main body is grader, and described grader is arranged on return air by its cover cylinder 2 On case 13, the classification screen drum that is coaxially disposed in making cover cylinder 24 is higher than air-intaking box 13, or cancels cover cylinder 2, and upper by cover cylinder 2 top Lid 5 is directly installed on air-intaking box 13, makes classification screen drum 4 all be placed in air-intaking box 13, and described air-intaking box 13 is by frame 14 Support is installed, and hopper 15 is installed in the bottom of air-intaking box 13, the substandard product discharging that outlet is grader of described hopper 15 Mouthful, as shown in Figure 3, Figure 4.

Described classification screen drum 4 is installed on power transmission shaft 3, described power transmission shaft 3 protrude upward cover cylinder 2 top upper cover 5 and with (belt pulley) drive mechanism 6 on the right side of upper cover 5 connects, and the qualified products discharge nozzle 7 pass-out upper cover 5 of grader 1 is also located at (belt Wheel) opposite side (i.e. left side) of drive mechanism 6；Above described upper cover 5, the forward and backward diameter that is respectively equipped with is more than the two of classification screen drum 4 Joint arc passage 11, the forward and backward charging aperture 8 that the lower end mouth of pipe of forward and backward arc passage 11 is offered on upper cover 5 is even Logical, described charging aperture 8 is coaxial arc-shaped slot, and the upper end mouth of pipe of forward and backward arc passage 11 is higher than (belt pulley) driver Structure 6 and qualified products discharge nozzle 7 are also drawn close in opposite directions and are reduced spacing, and the upper end mouth of pipe of forward and backward arc passage 11 is respectively communicated with The forward and backward discharging opening 39 of the tubular feed hopper 12 that side is arranged, is provided with turriform harmonious material device 16 in described feed hopper 12, described turriform is equal Being respectively equipped with forward and backward equal hopper on the forward and backward tower face of glassware 16, forward and backward equal hopper is respectively communicated with the forward and backward discharging of feed hopper 12 Mouthfuls 39, being arranged over of turriform harmonious material device 16 is driven by power transmission shaft 3 and gets rid of powder dish to forward and backward equal hopper uniform distribution powder 38, as shown in Fig. 3, Fig. 4, Fig. 5.

The annular driven by power transmission shaft 3 it is co-axially mounted in cover cylinder 2 or in air-intaking box 13 all corresponding to forward and backward charging aperture 8 Powder dish 9, described equal powder dish 9 is set with classification screen drum 4, and suit highly flushes in the top of classification screen drum 4, the periphery of equal powder dish 9 Being coaxially provided with the some powder plates 10 that hit being fixedly installed in the distribution of upper cover 5 lower circumference week, on equal powder dish 9, circumference uniform distribution is provided with radially Or helical form gets rid of hopper, described in get rid of the discharge chute mouth of hopper and be pointed to respectively hit powder plate 10, as shown in Figure 3, Figure 4.

The base 19 of described pulverizing main frame 18 is fixed on concrete machine block, and the endoporus lower central of base 19 is installed hollow Central shaft bracket 20, spatula frame 29 and central shaft bracket 20 coaxial package, base 19 endoporus top is co-axially mounted bull ring 21, base 19 Being co-axially mounted circular case 22 on end face, the central authorities of the cover cap 24 of described case 22 offer main frame material inlet 23, and a main frame goes out Material mouth 31 is offered bottom base 19 endoporus that central shaft bracket 20 is other, corresponding to main frame discharging opening 31 upper circle bottom spatula frame 29 Zhou Junbu installation is scraped shovel board 32 and (material of milling both can have been scraped main frame discharging opening 31, shovel of milling can have been entered the district that mills again and repeatedly grind Mill), the flour milling of described bull ring 21 is up big and down small taper flour milling, as shown in Figure 1 and Figure 2.

Main frame main shaft 25 bottom of described pulverizing main frame 18 is installed in central shaft bracket 20, during main frame main shaft 25 lower end is stretched out Arbor support 20 and base 19 also connect reductor by shaft coupling, and fixed roll is installed on main frame main shaft 25 top stretching out central shaft bracket 20 Frame 26 (for Flos Mume shelf structure), described fixed roll frame 26 connect be arranged on spatula frame 29 top, on fixed roll frame 26 circumference uniform distribution equipped with Multiple Burnisher apparatus, described Burnisher apparatus is mainly made up of grinding roller sleeve 27, shaft of grinding roller and grinding roller 28, described shaft of grinding roller by upper, Lower bearing position is installed in grinding roller sleeve 27, and (lower section in the diagonal) is tiltedly hung in fixed roll by linkage in the top of described grinding roller sleeve 27 On frame 26, described grinding roller 28 is coaxially connected with the shaft of grinding roller stretching out grinding roller sleeve 27 below grinding roller sleeve 27, and grinding roller 28 leans in mill On the taper grinding face of ring 21, grinding roller sleeve 27 tiltedly hang the oblique consistent of direction and taper grinding face, the top of fixed roll frame 26 by Support supports and is provided with the equal charging tray 30 coaxial with main frame main shaft 25, and the circumferential edges of described equal charging tray 30 is provided with rib, such as figure 1, shown in Fig. 2.

Arranging the boosting mechanism acting on Burnisher apparatus on described fixed roll frame 26, described boosting mechanism includes afterburning lever 35, power cylinder 17 (pneumatic cylinder or hydraulic cylinder) and compression spring 37, corresponding with each Burnisher apparatus, and described power cylinder 17 is in bilayer Between gusset 36, circumference uniform distribution is installed, and described double-deck gusset 36 is supported by four root posts 40 of circumference uniform distribution on fixed roll frame 26 Below equal charging tray 30；Corresponding with each Burnisher apparatus, described afterburning lever 35 is between double-deck gusset 36 and fixed roll frame 26 Circumference uniform distribution is arranged, and the outer end of each afterburning lever 35 is connected in corresponding grinding roller sleeve 27 and is hinged on the body above position, each reinforcing The piston rod of cylinder 17 passes downwardly through external member or rod member top is pressed in corresponding afterburning lever 35 the inner；It is corresponding with each Burnisher apparatus, Described compression spring 37 is set in corresponding piston rod and external member or rod member and is pressed in the lower plate of double-deck gusset 36 in advance with afterburning Between lever 35, as shown in Figure 1 and Figure 2.

Under the spring-force driven dual of compression spring 37, afterburning lever 35 gives the (active of similar lever of grinding roller sleeve 27 upper end End) an inside active force, make the grinding roller 28 of grinding roller sleeve 27 lower end (driven end of similar lever) be pressed on the cone of bull ring 21 On shape grinding face, can continue to provide a range of adjustable active force to afterburning lever 35 by power cylinder 17；Owing to have employed The double reaction plus boosting mechanism of described structure, thus make grinding roller 28 produce extra pressure adjustable to bull ring 21, pulverizing master When machine 18 works, adjustable extra pressure synthesizes grinding roller jointly with the centrifugal force of grinding roller 28 and the weight component of grinding roller 28 Grinding pressure between 28 and bull ring 21, it is ensured that when pulverizing main frame 18 works, it is provided that grinding pressure be enough and exactly institute Need.

Described outer circulation high-effective classifying device 1, main frame elevator 34, extension set elevator 33 and powder collector are all located at pulverizing By the side of main frame 18, the height of outer circulation high-effective classifying device 1 is suitable with the height of pulverizing main frame 18, described pulverizing main frame 18 Main frame discharging opening 31 passes through the bottom charging aperture of the pipeline connection grading, lifting machine 33 of oblique lower section, described grading, lifting machine 33 Upper part discharge port is by the feed hopper 12 of the pipeline connection outer circulation high-effective classifying device 1 of oblique lower section, outer circulation high-effective classifying device 1 Hopper 15 export the bottom charging aperture of the pipeline connection main frame elevator 34 by oblique lower section, described main frame elevator 34 Upper part discharge port by the pipeline connection main frame material inlet 23 of oblique lower section, the qualified products of outer circulation high-effective classifying device 1 go out Material pipe 7 connects powder collector, as shown in Figure 1 and Figure 2.

The method of operation of this utility model outer circulation flour mill:

1, mineral aggregate through main frame elevator 34 to pulverizing main frame 18 feed.

2, the powder milled through pulverizing main frame 18 imports outer circulation high-effective classifying device 1 through extension set elevator 33 and carries out classification.

3, qualified powder body is delivered to powder collector through qualified product discharge pipe 7, and defective powder body is through main frame elevator 34 Import pulverizing main frame 18 mill to death, the most constantly circulation.

The method of operation of described outer circulation high-effective classifying device 1:

1, the driving electric motor starting of (belt pulley) drive mechanism 6, under the drive of power transmission shaft 3, the classification screen drum 4 of grader Synchronous rotary is started with equal powder dish 9.

2, powder body enters into and through from feed hopper 12 and gets rid of powder dish 38 and turriform harmonious material device 16 and uniformly divide to forward and backward passage 11 Material, by the guide of forward and backward passage 11, powder body is in the forward and backward charging aperture 8 of upper cover 5 enters cover cylinder 2 or in air-intaking box 13.

3, falling within equal powder dish 9 under the powder body in entering cover cylinder 2 or in air-intaking box 13, under centrifugal action, powder body is from all The hopper that gets rid of of powder dish 9 outwards flies out, and the powder body flown out is separated into dust with hitting after powder plate 10 bumps against, and dust is formed through air-intaking box 13 Airflow function and be suspended in around classification screen drum 4.

4, meanwhile grader starts sorting work, and qualified powder body (meeting the fine powder of mesh number requirement) is from the conjunction of grader Lattice product discharge pipe 7 enters powder collector, falls within hopper 15 going out by hopper 15 under defective powder body (coarse powder) Mouth returns pulverizing main frame 18 through main frame elevator 34 and again mills.

Claims (3)

1. outer circulation flour mill, including pulverizing main frame (18) and main frame external-circulation grading system, described main frame outer circulation classification system System includes main frame elevator (34), grading, lifting machine (33), outer circulation high-effective classifying device (1) and powder collector, and its feature exists In:

1., base (19) the endoporus bottom center of described pulverizing main frame (18) is installed in central shaft bracket (20), described base (19) Bull ring (21) is installed on top, hole, and base (19) upper end installs case (22), and main frame material inlet (23) is opened in case (22) Cover cap (24) on, main frame main shaft (25) bottom is located in central shaft bracket (20) and is extended downwardly from base (19) and connects driver Structure, main frame main shaft (25) upper end is installed fixed roll frame (26), is provided with Burnisher apparatus, described mill around main frame main shaft (25) circumference uniform distribution Roller arrangement includes grinding roller sleeve (27), grinding roller (28) and shaft of grinding roller, and described grinding roller sleeve (27) is tiltedly hung by linkage inwardly lower section On fixed roll frame (26), described grinding roller (28) is installed on shaft of grinding roller in grinding roller sleeve (27) lower section and leans under bull ring (21) is upper greatly On little taper grinding face；Described fixed roll frame (26) is connected with spatula frame (29), described spatula frame (29) and central shaft bracket (20) Coaxial package, fixed roll frame (26) is arranged over the equal charging tray (30) rotated coaxially, and main frame discharging opening (31) is in central shaft bracket (20) Side is opened in bottom base (19) endoporus, arranges circumference uniform distribution corresponding to main frame discharging opening (31) and is installed on spatula frame (29) Scrape shovel board (32)；

2., described outer circulation high-effective classifying device (1), including grader, described grader include be located in cover cylinder (2) and by The classification screen drum (4) that power transmission shaft (3) drives, described power transmission shaft (3) stretches out the upper cover (5) of cover cylinder (2) and arranges with left side or right side Drive mechanism (6) connect, qualified products discharge nozzle (7) the pass-out upper cover (5) of grader is also located at another of drive mechanism (6) Side, the charging aperture (8) of described grader is opened in upper cover (5), described charging aperture (8) is before diameter is more than classification screen drum (4), Rear two sections of arc-shaped slots, corresponding to charging aperture (8) be coaxially disposed in cover cylinder (2) by power transmission shaft (3) drive and with classification screen drum (4) annular being set with all powder dishes (9), the upper circumference uniform distribution of described equal powder dish (9) is provided with radially or helical form gets rid of hopper, corresponding to getting rid of The discharge chute mouth of hopper be provided be installed on upper cover (5) lower circumference distribution hit powder plate (10), arrange forward and backward on upper cover (5) Passage (11), the lower end of forward and backward passage (11) is respectively communicated with forward and backward arc-shaped slot, and the upper end of forward and backward passage (11) is high In drive mechanism (6) and qualified products discharge nozzle (7) the forward and backward discharging opening (39) connecting the feed hopper (12) being provided above, Described grader is installed on air-intaking box (13) by cover cylinder (2) above makes classification screen drum (4) be higher than air-intaking box (13), or cancels cover Cylinder (2) and upper cover (5) is directly mounted at air-intaking box (13) on to make classification screen drum (4) be placed in air-intaking box (13) interior, described time Bottom connection hopper (15) of bellows (13), the substandard product discharging opening that outlet is grader of described hopper (15)；

3., described main frame discharging opening (31) is by the charging aperture of pipeline connection grading, lifting machine (33), described grading, lifting machine (33) the discharging opening feed hopper (12) by pipeline connection outer circulation high-effective classifying device (1), outer circulation high-effective classifying device (1) Hopper (15) outlet charging aperture by pipeline connection main frame elevator (34), the discharging opening of main frame elevator (34) is by pipe Road connection main frame material inlet (23), qualified products discharge nozzle (7) the connection powder collector of outer circulation high-effective classifying device (1).

Outer circulation flour mill the most according to claim 1, it is characterised in that: described fixed roll frame (26) is provided with and rotates coaxially And acting on to improve the boosting mechanism of grinding forces on Burnisher apparatus, described boosting mechanism includes afterburning lever (35), power cylinder And compression spring (37) (17), described afterburning lever (35) is arranged corresponding to each grinding roller sleeve (27) circumference uniform distribution, each afterburning lever (35) outer end is connected on the body above corresponding grinding roller sleeve (27) hinge position, and described power cylinder (17) is in equal charging tray (30) And circumference uniform distribution is arranged between afterburning lever (35), the piston rod of each power cylinder (17) passes downwardly through external member or rod member top be pressed in right The afterburning lever (35) answered is inner, and described compression spring (37) is set in piston rod and external member or rod member and is pressed in power cylinder in advance (17) and between afterburning lever (35).

Outer circulation flour mill the most according to claim 1, it is characterised in that: described feed hopper is provided with turriform homocline in (12) Device (16), the forward and backward tower face of described turriform harmonious material device (16) is provided with before forward and backward discharging opening (39) guide of feed hopper, Rear all hoppers, being arranged over by power transmission shaft (3) drive and to forward and backward equal hopper uniform distribution powder of turriform harmonious material device (16) Get rid of powder dish (38).