CN104367192B

CN104367192B - Coffee bean grinding device of coffee machine

Info

Publication number: CN104367192B
Application number: CN201410686197.9A
Authority: CN
Inventors: 张永法
Original assignee: NINGBO ROOMA ELECTRIC CO Ltd
Current assignee: NINGBO ROOMA ELECTRIC CO Ltd
Priority date: 2014-11-25
Filing date: 2014-11-25
Publication date: 2017-01-25
Anticipated expiration: 2034-11-25
Also published as: CN104367192A

Abstract

The invention discloses a coffee bean grinding device of a coffee machine. The coffee bean grinding device of the coffee machine comprises a hopper (1), a cover plate (2), a protecting sleeve (3), a tool bit (4), a cutter sleeve (5), a powder throwing disk (6) and a main shaft (8) driven by a motor (7), wherein the cover plate (2) is located above a discharge outlet (1.1) which is communicated with the cutter sleeve (5) through the protecting sleeve (3), a connecting shaft (10) is fixed to the top end of the main shaft (8), and external threads (10.1) are arranged on the outer circumferential face of the connecting shaft (10); a guide sleeve (2.2) of the cover plate (2) is matched with the connecting shaft (10) through splines; a plurality of first shifting ribs (2.5) which are evenly distributed in the circumferential direction and used for shifting coffee beans from the center of a cover body (2.1) to the outer circumference of the cover body (2.1) are arranged on the upper surface of a cover body (2.1). Due to the device, discharging is smoother.

Description

The bean milling device of coffee machine

Technical field

The present invention relates to a kind of parts of coffee machine, it is especially a kind of bean milling device of coffee machine.

Background technology

It is provided with the bean milling device that coffee bean agitation grinding is become bean powder in coffee machine housing.The mill of the coffee machine of prior art Beans device includes up big and down small generally conical shape hopper 101, cover plate 102, protection sleeve 103, ox horn shift fork 104, cutter head 105th, broach shell 106, get rid of powder disk 107 and through motor-operated main shaft 108；Hopper 101 and broach shell 106 housing all with coffee machine Fixing, main shaft 108 is also arranged in coffee machine housing through bearing；The discharging opening of hopper 101 is located at hopper 101 bottom, cover plate 102 Above discharging opening and the oblique side wall through a plurality of dowel 109 and hopper 101 for the cover plate 102 is fixed, discharging opening is through protecting sleeve 103 are connected with broach shell 106, and ox horn shift fork 104 is located at the into the barrel chamber of protection sleeve 103 and ox horn shift fork 104 is solid with main shaft 108 Fixed, cutter head 105 is up-small and down-big Rotary-table, and cutter head 105 is located at the center in the hole of broach shell 106 and cutter head 105 is solid with main shaft 108 Fixed, get rid of powder disk 107 and be located at cutter head 105 lower section and fix with main shaft 108.

The course of work of the bean milling device of this coffee machine is: coffee bean is deposited in hopper, coffee bean drops to discharging Mouthful, enter protection sleeve in the gap between cover plate and hopper oblique side wall, now, ox horn shift fork rotates, constantly by discharging opening And the coffee bean of protection sleeve junction stirs so that coffee bean continues to drop in the gap between broach shell and cutter head, and then The cutter head grounds travel being rotated is broken into coffee bean powder, and finally the gap between broach shell and cutter head drops to the getting rid of powder disk of rotation Throw away to surrounding.

It is that coffee bean blanking process has some setbacks very much that the bean milling device of the coffee machine of prior art has a critical defect, pole Easily block.The reason cause this situation is that nearby sectional area gradually successively decreases, between cover plate and hopper oblique side wall the discharging opening of hopper Gap is narrow, sectional area is little, coffee bean easily blocks herein；And the presence of the reinforcement of connecting cover plate is blocked further Keep off coffee bean blanking, exacerbate blocking；Moreover two ox horns of ox horn shift fork all upwarp towards this gap, therefore the rotation of ox horn shift fork A larger active force upwards towards discharging opening gap direction can be produced when turning, be further exacerbated by the stifled of coffee bean Plug.But nonetheless, cover plate can be set again, otherwise coffee bean blanking is too fast, the amount of the coffee bean in broach shell exceeds knife Head amount of grinding can cause more serious blocking, same nor be not provided with ox horn shift fork, and otherwise coffee bean is directly just deposited in lid It is easier in gap between plate and hopper oblique side wall to block.

Content of the invention

The technical problem to be solved in the present invention be to provide one kind can make coffee bean blanking more smooth, reduce coffee bean block up The bean milling device of the coffee machine of plug probability.

The technical solution of the present invention is to provide a kind of bean milling device of coffee machine, and it includes hopper, cover plate, protection Sleeve, cutter head, broach shell, get rid of powder disk and through motor-operated main shaft；Hopper and broach shell are all fixed with the housing of coffee machine, main shaft Also it is arranged in coffee machine housing through bearing；The discharging opening of hopper is located at feed hopper bottom, and cover plate is located above discharging opening, discharging opening Connect with broach shell through protection sleeve, cutter head is located at the first center in the hole of broach shell and cutter head is fixed with main shaft, get rid of powder disk and be located at knife Fix below head and with main shaft,

Main shaft top is fixed with a connecting shaft, and the outer circumference surface of connecting shaft is provided with external screw thread, and connecting shaft top is provided with interior Screwed hole, the anchor ring on connecting shaft top is provided with spline；

Cover plate is made up of the fairlead of lid and lid lower end, and lid and fairlead are coaxial, and cover plate is provided with and passes through from lid Lead to the second centre bore of fairlead, the anchor ring of fairlead bottom also is provided with spline, the second center in the hole is provided with ring-shaped step Face, is equipped with a screw, the screw rod of screw screws in the internal thread hole of connecting shaft, and screw rod is sheathed with pressure in the second centre bore Spring, stage clip upper end and screw head push against, and stage clip lower end pushes against with annular table terrace so that the spline of fairlead bottom anchor ring Spline fitted with connecting shaft top anchor ring；

The upper surface of lid be provided be uniformly distributed circumferentially a plurality of for by coffee bean from lid center is to lid What circumference was stirred first stirs muscle.

The course of work of the bean milling device of this coffee machine is: coffee bean is deposited in hopper, coffee bean drops to discharging Near mouthful, drive motor rotates through main shaft band dynamic cutter head, connecting shaft external screw thread and cover plate, the coffee bean near discharging opening This gap on the cover board, in the gap that minority falls between cover plate and hopper oblique side wall, is defined by most accumulations for ease of description For discharging opening gap, first on cover plate stirs muscle rotation and can elapse the coffee bean piled up on the cover board to discharging opening gap, Then through the slit is fallen in protective case, then the external screw thread agitation by the connecting shaft of rotation in protective case, falls in the first of broach shell Heart in the hole, is broken into bean powder by cutter head grounds travel, and the gap between cutter head and broach shell drops to gets rid of powder disk, and finally rotated gets rid of Powder disk throws away.

There are several spotlights in the design of this bean milling device: one is to be dialled with the ox horn that the external screw thread of connecting shaft substitutes prior art Fork, this avoid the congestion during rotation of ox horn shift fork, the active force in discharging opening gap direction being led to produce at this；Two be by Cover plate is connected with main shaft, rather than is fixed on hopper with dowel as prior art, so, eliminates whole connections Muscle, expands the aisle spare in discharging opening gap, alleviates the blocking of this position further；Three is that lid upper surface first is stirred The design of muscle, every first direction stirring muscle tilting is in opposite direction with what cover plate rotated, and so, during cover plate rotation, first stirs The bean or pea piled up on the cover board can be elapsed by muscle to discharging opening gap, further speeds up bean or pea blanking, and, this feature and first Bar feature be combined with each other synergistic, although because being solved with the scheme that the external screw thread of connecting shaft substitutes ox horn shift fork Ox horn shift fork rotates the resistance to discharging opening and causes congestion, but the efficiency of external screw thread agitation bean or pea may be dialled not as ox horn after all Fork ideal is so that blanking velocity slows down, but first stirs the passage to bean or pea for the muscle, have modified this nibs so that mill beans fill The Whole blanking speed put substantially is accelerated；One maximum design bright spot of this device is, the spline of fairlead and connecting shaft is joined Close, and the pressured spring pressing of two splines, so, start most, the speed of cover plate rotation is the rotating speed identical with cutter head, cutter head turns Speed is fast, and cover plate rotating speed is also fast, and first on the cover plate of quick rotation stirs influential point of tendons and bean or pea elapse discharging opening gap in a large number, lid If plate rotating speed is constant always, bean or pea can be made in the excessively congestion of discharging opening gap, but the bean or pea piled up in discharging opening gap Gradually increase, first stirs muscle is gradually increased naturally to the resistance of discharging opening gap passage bean or pea, and resistance increases to a certain extent The spline between the fairlead of cover plate and connecting shaft can be made to skid, and then lead to fairlead and connecting shaft to disengage so that cover plate Stir muscle with first not to be rotated further by, when the bean or pea in discharging opening gap do not stop minimizing, stir the resistance that myospasm moves to first Also minimizing naturally, two splines are compressed by stage clip again, and first stirs myospasm speed gradually accelerates that is to say, that spline pressurizes again The design of spring achieves first and stirs automatically adjusting and compensating of myospasm speed, and discharging opening gap bean or pea are many, then rotating speed is slow not even Turn, rotating speed is fast at least for discharging opening gap bean or pea, can prevent congestion, can accelerate blanking again.

In sum, using above structure coffee machine bean milling device compared with prior art, have the advantage that Make coffee bean blanking smooth quick, prevent the situation of coffee bean blocking.

As improvement, the lower surface of lid be provided be uniformly distributed circumferentially a plurality of for by coffee bean from lid excircle To lid centre toggle second stir muscle, every second direction stirring muscle tilting is identical with the direction that lid rotates, this Sample, stirring muscle with the second of lid rotation can be easy to bean or pea to protective case by the bean or pea at discharging opening gap to middle passage Fall, prevent from further blocking, accelerate blanking.

Brief description

Fig. 1 is the cross section structure diagram of the bean milling device of the coffee machine of prior art.

Fig. 2 is the cross section structure diagram of the bean milling device of coffee machine of the present invention.

Fig. 3 is the configuration schematic diagram of the bean milling device of coffee machine of the present invention.

Fig. 4 is the mplifying structure schematic diagram of the cover plate of the bean milling device of coffee machine of the present invention.

Fig. 5 is the present invention looks up structural representation of the cover plate of the bean milling device of coffee machine of the present invention.

Fig. 6 is the overlooking the structure diagram of the cover plate of the bean milling device of coffee machine of the present invention.

Shown in figure

The parts 101 of prior art bean milling device, hopper, 102, cover plate, 103, protection sleeve, 104, ox horn shift fork, 105th, cutter head, 106, broach shell, 107, get rid of powder disk, 108, main shaft, 109, dowel；

The parts 1 of bean milling device of the present invention, hopper, 1.1, discharging opening, 2, cover plate, 2.1, lid, 2.2, fairlead, 2.3rd, the second centre bore, 2.4, annular table terrace, 2.5, first stirs muscle, and 2.6, second stirs muscle, and 3, protection sleeve, 4, knife Head, 5, broach shell, the 5.1, first centre bore, 6, get rid of powder disk, 7, motor, 8, main shaft, 9, bearing, 10, connecting shaft, 10.1, outer spiral shell Line, 10.2, internal thread hole, 11, spline, 12, screw, 13, stage clip, 14, worm set, 15, worm gear.

Specific embodiment

The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the bean milling device of coffee machine of the present invention, it includes hopper 1, cover plate 2nd, protect sleeve 3, up-small and down-big Rotary-table cutter head 4, columnar broach shell 5, get rid of powder disk 6 and the main shaft driving through motor 7 8.The output shaft of motor 7 is provided with worm set 14, and main shaft 8 is provided with transmission worm gear 15, and worm set 14 is engaged with worm gear 15.Material Bucket 1 and broach shell 5 are all fixed with the housing of coffee machine, and main shaft 8 is also arranged in coffee machine housing through bearing 9, and protection sleeve 3 is permissible Can also be fixing with broach shell 5 with coffee machine housing fixation.

Hopper 1 is up big and down small generally conical shape.The discharging opening 1.1 of hopper 1 is located at hopper 1 bottom, and cover plate 2 is located at discharging opening Above in the of 1.1, through protecting the barrel chamber of sleeve 3 to connect with the first centre bore 5.1 of broach shell 5, cutter head 4 is located at broach shell 5 to discharging opening 1.1 The interior and cutter head 4 of first centre bore 5.1 is fixing with main shaft 8, gets rid of powder disk 6 and is located at cutter head 4 lower section and fixes with main shaft 8.

Main shaft 8 top protrudes above cutter head 4 and the fixation of main shaft 8 top is such as spirally connected and has screwed a connecting shaft 10, connecting shaft 10 Outer circumference surface be provided with external screw thread 10.1, connecting shaft 10 top is provided with internal thread hole 10.2, and the anchor ring on connecting shaft 10 top sets There is spline 11.

Cover plate 2 is made up of the fairlead 2.2 of lid 2.1 and lid 2.1 lower end.The axis weight of lid 2.1 and fairlead 2.2 Close and both are integrally formed.Cover plate 2 is provided with the second centre bore 2.3 penetrating into fairlead 2.2 from lid 2.1, that is, in second The bottom of fairlead 2.2 is ganged up always from the upper surface of lid 2.1 in heart hole 2.3.The anchor ring of fairlead 2.2 bottom also is provided with Spline 11, is provided with annular table terrace 2.4, is equipped with a screw 12, screw in the second centre bore 2.3 in the second centre bore 2.3 12 screw rod screws in the internal thread hole 10.2 of connecting shaft 10.Stage clip 13, stage clip 13 upper end and 12, screw are sheathed with screw rod Portion pushes against, and stage clip 13 lower end and annular table terrace 2.4 push against so that the spline 11 of fairlead 2.2 bottom anchor ring and connecting shaft 10 The spline 11 of top anchor ring coordinates.

As shown in fig. 6, the upper surface of lid 2.1 be provided be uniformly distributed circumferentially a plurality of for by coffee bean from lid Muscle 2.5, every first direction stirring muscle 2.5 tilting and lid are stirred to the excircle of lid 2.1 is stirred first in 2.1 centers 2.1 rotation in opposite direction.As shown in figure 5, the lower surface of lid 2.1 be provided be uniformly distributed circumferentially a plurality of for by coffee Beans stir muscle 2.6, every second side stirring muscle 2.6 tilting from the second of the centre toggle of lid 2.1 cylindrical circumference lid 2.1 To identical with the direction that lid 2.1 rotates.

Claims

1. a kind of bean milling device of coffee machine, it include hopper (1), cover plate (2), protection sleeve (3), cutter head (4), broach shell (5), Get rid of powder disk (6) and the main shaft (8) driving through motor (7)；Hopper (1) and broach shell (5) are all fixed with the housing of coffee machine, main shaft (8) also it is arranged in coffee machine housing through bearing (9)；The discharging opening (1.1) of hopper (1) is located at hopper (1) bottom, cover plate (2) Above discharging opening (1.1), discharging opening (1.1) is connected with broach shell (5) through protection sleeve (3), and cutter head (4) is located at broach shell (5) The first centre bore (5.1) in and cutter head (4) and main shaft (8) are fixing, get rid of powder disk (6) be located at below cutter head (4) and with main shaft (8) Fixing it is characterised in that:

Main shaft (8) top is fixed with a connecting shaft (10), and the outer circumference surface of connecting shaft (10) is provided with external screw thread (10.1), connects Axle (10) top is provided with internal thread hole (10.2), and the anchor ring on connecting shaft (10) top is provided with spline (11)；

Cover plate (2) is made up of the fairlead (2.2) of lid (2.1) and lid (2.1) lower end, lid (2.1) and fairlead (2.2) Coaxially, cover plate (2) is provided with the second centre bore (2.3) penetrating into fairlead (2.2) from lid (2.1), fairlead (2.2) bottom The anchor ring at end also is provided with spline (11), is provided with annular table terrace (2.4), the second centre bore (2.3) in the second centre bore (2.3) Inside it is equipped with a screw (12), the screw rod of screw (12) screws in the internal thread hole (10.2) of connecting shaft (10), and screw rod covers Conjunction has stage clip (13), and stage clip (13) upper end is pushed against with screw (12) head, and stage clip (13) lower end is pushed against with annular table terrace (2.4) So that the spline (11) of fairlead (2.2) bottom anchor ring is coordinated with the spline (11) of connecting shaft (10) top anchor ring；

The upper surface of lid (2.1) be provided be uniformly distributed circumferentially a plurality of for by coffee bean from lid (2.1) center to lid What the excircle of body (2.1) was stirred first stirs muscle (2.5).

2. coffee machine according to claim 1 bean milling device it is characterised in that: the lower surface of lid (2.1) is provided with edge Circumference equally distributed a plurality of for by coffee bean from second group of centre toggle of lid (2.1) cylindrical circumference lid (2.1) Dynamic muscle (2.6).