Attachment to the mixer for grinding coffee

 

(57) Abstract:

Usage: the device is a household devices, namely, devices for grinding coffee. The inventive attachment to the mixer for grinding coffee, having high productivity and quality of grinding, cutting part of the knife is made in the form of two levofolinic blade screws fixed in bearings on the bracket, the axis of rotation of which 1 is perpendicular to the radius of the shaft of the nozzle. Axis single propeller lies in the plane of the knife bracket, and the second above the size of the blade. The cover is shaped so that it forms Polaroid, in the upper part of which is made of the inner protrusion located opposite the shaft coupling. The side surface of the bowl is made of a rounded radius. 3 Il.

The invention relates to household appliances, namely, devices for grinding coffee.

The prior art in this area is characterized by shared information below.

A device for crushing food products, mainly coffee [1] , comprising a housing with a cover, drive with knives, locking mechanism containing the plunger and the stopper with the tabs located in the lower and middle h the th part, and the lid has a groove to accommodate the upper end of the stopper. A disadvantage of this device is that, when rotating at high speed, the knife under the action of centrifugal force rises. As a result, the gap between the end face of the bearing, washers and end of the plastic coupling disappears. The surfaces of these elements are interconnected in tight contact. Under the influence of compression forces in the friction between the surfaces is formed of high heat dissipation, especially harmful in the ground contact surface of the end face of the plastic coupling. Material coupling under the influence of temperature is softened, and the rigidity of the mounting therein of the shaft is broken. For this reason, the device has a low reliability and a very limited time using it at work.

The closest in technical essence to the invention is the attachment to the mixer for grinding coffee [2]. Attachment to the mixer for grinding coffee maker includes a housing, a bowl, a lid, a locking mechanism for securing the bowl, the bearing is placed in the last shaft, one side of which is fortified consisting of a bracket and the cutting part of the knife, and on the other, plastic bushing, in this case between the end bearing and the end face plastic polumalu installation and quality of grinding coffee insufficient due to the flat design of the knife.

The plant capacity can be improved by performing the cutting part of a knife in the form of two levofolinic blade screws, the rotation axis which is tangent to the circle of rotation around the shaft axis of the nozzle and which, by participating in a portable angular velocity together with the shaft packing and discarding particles to the wall of the Cup and the lid, due to the relative speed of the screw about the axis of its rotation and the resulting Coriolis forces, coffee mix to a greater extent than in the device prototype.

The objective of the invention is to improve the quality of grinding the coffee and the performance of the mixer nozzle,

The problem is solved due to the fact that the attachment to the mixer for grinding coffee, which includes a housing, a bowl, cover, locking mechanism, the sleeve for fastening the bowl mounted in the sleeve bearing is placed in the last shaft of the nozzle, one end of which is fixed the knife, consisting of a holder and a cutting part, and on the other, plastic coupling, between the end bearing and the end face of the plastic coupling posted locking wire ring set in machined on the shaft groove, the cutting part of the knife is made in the form of two levofolinic blade wines the nozzle, when this axis single propeller lies in the plane of the knife bracket, and the second above the size of the blade, the cover is shaped so that it forms Polaroid, in the upper part of which is made of the inner protrusion located opposite the shaft coupling, and the side surface of the bowl is made rounded radius.

In Fig. 1 shows the attachment to the mixer for grinding coffee (General view): a - front view, b - top view; Fig.2 - node I in accordance with Fig.1. Blade knife made in the manner described, which is confirmed below; Fig.3 is a diagram of the forces and velocities that occur during operation of the nozzle.

Attachment to the mixer for grinding coffee maker includes a housing 1, Cup 2, the side surface of which is rounded on a radius, the cover 3 is in the form poloroid, a locking mechanism that is designed to disable the drive of the nozzle when the cover 3 is in the form of Polaroid (not shown). The Cup 2, the side surface of which is rounded on a radius, mounted in the housing 1 with the sleeve 4, in which is mounted the bearing 5. In the bearing 5 reinforced shaft 6, one end of which is rigidly fixed to the coupling 7 having spline teeth 8 for transmitting rotation from the drive shaft of the mixer to the shaft 6. The other StoreID side of the bearing 5 and the end face of the coupling hub 7 is placed locking wire ring 11, set in machined on the shaft 6 of the groove. At the ends of the bracket 10 is installed knife, made in the form of two levofolinic blade screws are installed with bearings so that they are provided with freedom of rotation around the axis of the impeller screws 12 and 13, parallel to the plane of the bracket 10 and the circles of their rotation around the axis of the shaft.

When this blade screws 12 and 13 are mounted so that their axis of rotation perpendicular to the radii of the shaft head, and the axis of rotation of the one lies in the plane of the bracket and the axis of rotation of the other higher, for example on the size of the blade to enable grinding of larger volume of coffee.

In Fig.2 depicts the design of node I in accordance with Fig.1, setting the knife on the bracket 10. Part of the site includes blade propeller 12 containing the blades 14, the shaft of the screw 15. Screw shaft 15 is installed with bearings 16 and 17 in the bracket 10.

Axial displacement of the shaft of the screw 15 is limited by the flanges 18 and 19, which are attached to the bracket 10 by grub screws (not shown). The blade 14 is fixed on the shaft of the screw 15 by using, for example, of a pin 20. The cover 3 is made in such a way that it forms Polaroid, while the end of the oval internal speaker.

After installation of the housing 1 in the mounting slot of the mixer, where the articulation of the coupling hub 7 with the response part of the coupling of the drive of the mixer, pour in the Cup 2, where the grinding blade screws 12 and 13, coffee or other product. Then take the cover 3 and cover it with the bowl 2, and the end cap 3 acts on the locking mechanism that includes a drive motor of the mixer. The shaft 6 of the coupling, and therefore, a blade screws 12 and 13 receive the rotation through the coupling 7 around the axis of the shaft 6. In the presence of the angular velocity of rotation of the shaft 6 blade propellers 12 and 13 rotate around the axis of the shaft 6 with a laptop for them angular velocity (Fig. 3). Meeting the resistance of coffee, a blade screws 12 and 13 from the impact of the blades 14 will rotate around the axes of the shafts of the screw 15 with a relative velocity1and2for blade screws 12 and 13, respectively. When this sleeve 4 is provided to connect the bowl 2 with a bearing 5, which rotates the shaft 6 which is driven through the coupling 7 and the spline teeth 8 from the shaft of the mixer. The bearings 16 and 17 provide the rotation of the propeller shaft 15, axial load perceive the flanges 18 and 19. Nut 9 through the locking ring 11 holds the bracket 10 is fixed is s shown in the rotation numbers 12 and 13. The outputs of these screws is shown the trajectory of the particles of coffee, the relative velocities of the particles at the outlet of the screw 12 as shown , and screw 13"

On departing particles involved in a figurative and relative motions, acting Coriolis force after the screw 12; after the screw 13, the vectors are equal

< / BR>
where is the mass of the particles of coffee;

- vectors relative translational velocity and portable angular velocity;

- vectors Coriolis forces.

For force, point of application which are located on lines parallel to the axis of the shaft, will have

< / BR>
It is evident from Fig.3 it is easy to install that along with the drop screws particles of coffee in the directions perpendicular to the axes of rotation of the impeller screws, particles will participate in the vortex motion around the axes parallel to the axis of the bracket 10, which will lift the particles from the bottom up. Cast by screws particles will generatrix of the torus cover 2 to aspire to its internal ledge 21, while the radial flow will be through the second vortex flow to bend and deviate from the radius, acquiring a spiral motion around the inner ledge 21. Due to this, will be more intense grinding knife is La grinding coffee, which includes a housing, a bowl, cover, locking mechanism, the sleeve for fastening the bowl mounted in the sleeve bearing is placed in the last shaft of the nozzle, one end of which is fixed consisting of a bracket and the cutting part of the knife, and on the other, plastic coupling, between the end bearing and the end face of the plastic coupling posted locking wire ring set in machined on the shaft groove, characterized in that the cutting part of the knife is made in the form of two levofolinic blade screws installed through the bearings on the bracket, the axis of rotation which is perpendicular to the radius of the shaft of the nozzle, when this axis single propeller lies in the plane of the knife bracket, and the second above the size of the blade, the cover is shaped so that it forms Polaroid, in the upper part of which is made of the inner protrusion located opposite the shaft coupling, and the side surface of the bowl rounded radius.

 

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