[0028] see also Figure 1 In the embodiment of the invention, a high-reliability household vegetable grinder comprises a machine body 14, a crushing cavity 2, crushing cutters 3 and an emulsifying assembly 4, wherein the machine body 14 is a left cylindrical cavity and a right cylindrical cavity, and the crushing cavity 2 is located on the left side of the machine body; a detachable feeding cover 5 is arranged above the crushing cavity 2; two groups of crushing cutters 3 with opposite rotation directions are arranged below the crushing cavity 2; and the periphery of the crushing cavity 2 is detachable.
[0029] The emulsifying assembly 4 can suck the juice in the juice chamber 1 and break the fibers, cell walls and the like in the juice chamber 1;
[0030] An extractable vegetable juice container 9 is arranged below the emulsifying assembly 4.
[0031] In this embodiment, the two groups of crushing cutter heads 3 are driven by the same crushing motor 11 through the first gear transmission and the second gear transmission, respectively, and their transmission ratios are the same, so that the two groups of crushing cutter heads 3 rotate reversely at the same speed.
[0032] In this embodiment, the crushing cutter head 3 is composed of a shaft and 2-4 groups of blades distributed up and down, and the radius of each group of blades increases from top to bottom in turn, so that vegetables of different sizes can be crushed in stages by blades with different radii, thus avoiding further crushing of fine particles due to too small a radius of blades or cutting of large pieces of vegetables due to too large a radius of blades.
[0033] In addition, the radius of the lowermost blade makes it just fit the filter screen 8;
[0034] In addition, the inclination angle of the blade in the crushing cutter head 3 makes the vegetables receive upward thrust during rotation;
[0035] In the two groups of crushing cutter heads 3, a slight gap is left between the lower surface of one group of cutter heads and the upper surface of the other group of cutter heads with the same radius, and the bottommost blades of the two groups of crushing cutter heads 3 can cross each other, so that the fiber tissue of vegetables can be sheared by the reverse rotation of the two groups of crushing cutter heads 3, so that the roots and fiber tissues of vegetables can be better crushed without leaving residues; and the high-pressure air on the inner wall of the filter screen 8 and the upward thrust of the central crushing cutter head 3 make the vegetables circulate in the crushing cavity 2, so that the crushing is more thorough.
[0036] In this embodiment, the juice cavity 1 is provided with an air pipeline 7, the lower end of which is connected with a micro air pump 12, and the upper end is connected with an air jet ring 6, which is a ring of air outlets at the upper edge of the feed cover 5, and can jet high-pressure air to the inner walls of the feed cover 5 and the filter screen 8, blowing off the vegetable granules splashed on the feed cover 5 and the filter screen 8 by the crushing cutter head 3, so as to make the crushing more thorough and avoid leaving residues;
[0037] The air duct 7 is connected by a rubber seal at the joint of the machine body 14 and the feed cover 5.
[0038] see also Figure 2 and Figure 3 In this embodiment, the emulsifying assembly 4 comprises a suction chamber 41, an emulsifying chamber 42, a main shaft 43, a rotor 44, rotor blades 45 and a stator 46. The side of the suction chamber 41 is communicated with the juice chamber 1 through a pipeline 13, and the bottom is communicated with the top center of the emulsifying chamber 42. The top center of the emulsifying chamber 42 is provided with a feed hole 48, and the bottom edge is provided with a discharge hole 49. A rotor 44 is arranged at the upper part, a rotor blade 45 is arranged at the middle part, and a stator 46 is arranged at the lower part. The rotor 44 and the rotor blade 45 can be driven to rotate by the emulsifying motor 10 through a main shaft 43 fixedly connected with the rotor blade 45, and the rotation of the rotor blade 45 can make the center of the emulsifying cavity 42 and the suction cavity 41 generate negative pressure. The stator 46 is fixedly connected to the bottom of the emulsifying cavity 42.
[0039] In this embodiment, the rotor 44 in the emulsification chamber 42 is disc-shaped, with multiple circles of protruding gear rings distributed on the circumference of the disc, and the gap between the same gear rings is smaller than the length of the gear rings, while the gap between different gear rings is larger than the width of the gear rings. The stator 46 is also a disc with protruding gear rings, and the gear racks of the stator 46 and the rotor 44 are mutually staggered between the gear rings, and their gear racks are equal in height, and are attached to the upper and lower inner walls of the emulsification chamber 42.
[0040] The vegetable juice crushed by the crushing chamber 2 is a suspension containing a large number of solid particles. The rotor 44 and rotor blades 45 rotate at a high speed to generate a strong centrifugal force field, which forms a strong negative pressure area in the center of the rotor 44. The vegetable juice suspension is sucked from the feed hole 48 in the center of the rotor 44. Under the action of centrifugal force, the vegetable juice suspension spreads from the center to the periphery. During the diffusion process, The vegetable juice suspension is stirred by the rotor blade 45 at first, and sheared between the end face of the rotor blade 45 and the inner narrow gap of the gear ring of the stator 46. Then, it enters the narrow gap between the gear ring of the rotor 44 and the gear ring of the stator 46 in the inner ring. Under the action of mechanical force and hydrodynamic effect, a great shear, friction, collision and friction between the vegetable juice suspensions are generated, so that the vegetable juice suspension is broken and mixed. With the linear speed of the gear ring of the rotor 44 gradually increasing from the inner ring to the outer ring, the crushing degree is constantly increasing, and the vegetable juice is subjected to more and more intense shearing, friction, impact, collision and other actions during the outward ring movement, so that the plant cell wall in the vegetable juice is broken, and the intracellular substances and the juice are mixed and emulsified, and finally flow out into the vegetable juice container 9 through the discharge port 49 at the bottom edge of the emulsifying cavity 42;
[0041] It should be noted that the inner diameter of the emulsifying chamber 42 is not more than 8cm, and the height is not more than 4cm. As the rotor 44 is subjected to greater resistance at high rotation speed, it is necessary to ensure that its load is small, so as to achieve a better crushing effect.
[0042] In this embodiment, in this embodiment, the upper end of the emulsifying motor 10 is not in contact with the machine body 14, but the lower end is bolted to the machine body 14 through a buffer pad, and the emulsifying chamber 42 and the machine body 14 are also bolted to the machine body 14 through the buffer pad, so as to ensure the stability of the emulsifying motor 10 and the rotor 44 in high-speed rotation and reduce the vibration and noise of the whole equipment.
[0043] It should be noted that the power of the emulsifying motor 10 is not less than 2,000 W, and the rotating speed provided by the emulsifying motor 10 to the main shaft 43 is not less than 17000rmp, so as to ensure that a sufficient negative pressure is generated in the suction chamber 41 and that the rotor 44 can have a good crushing effect.
[0044] In this embodiment, at least three circumferentially distributed pressurizing columns 47 are arranged above the emulsifying chamber 42, and the pressurizing columns 47 are perpendicular to the upper surface of the emulsifying chamber 42, and their upper sides are connected with the connecting plate between the emulsifying motor 10 and the machine body 14, and are connected with the air duct 7 in the connecting plate, and their lower sides pass through the emulsifying chamber 42 and adhere to the upper surface of the rotor 44.
[0045] The pressurizing column 47 exerts downward pressure on the rotor 44, so that the rotor 44 and the stator 46 are more closely attached up and down, preventing vegetable juice from leaking from the upper and lower surfaces during the rotation of the rotor 44, and reducing the effect of cell breakage;
[0046] The rotor 44 in the emulsification chamber 42 is provided with micropores, and the micropores can spray air beams below the rotor 44 through the air pressure exerted by the booster column 47.
[0047]The fine high-speed air jet from the micropore will generate a large number of small bubbles in the vegetable juice during the rotation of the rotor 44, and the high-speed micro-jet will be generated due to the instantaneous collapse of a large number of bubbles with the increase of pressure. This high-speed micro-jet will generate strong pulse pressure, which can periodically expand and compress the particle surface, resulting in the breakdown of solid and liquid particles. This is the cavitation effect, which can homogenize liquid-liquid and solid-liquid materials.
[0048] In practice, firstly, open the detached feed cover 5, install the cleaned filter screen 8, put a proper amount of vegetables into the crushing chamber 2, and close the feed cover 5;
[0049] The two groups of crushing cutter heads 3 rotate reversely at the same speed, and the vegetables with different sizes are crushed in stages by blades with different radii, so as to avoid further crushing of fine particles due to too small a blade radius or cutting of large pieces of vegetables due to too large a blade radius, and the two groups of crushing cutter heads 3 rotate reversely in a staggered way to shear the fiber tissues of vegetables, so that the roots and fiber tissues of vegetables are better crushed. The air jet ring 6 jets high-pressure air to the inner walls of the feed cover 5 and the filter screen 8, blowing off the vegetable granules splashed on the feed cover 5 and the filter screen 8 when cut by the crushing cutter head 3, so as to make the crushing more thorough and avoid leaving residues. After crushing, the vegetable juice suspension entering the juice cavity 1 through the filter screen 8 is sucked into the suction cavity 41 by the pipeline 13;
[0050] The high-speed rotation of rotor 44 and rotor blades 45 generates a strong centrifugal force field, which forms a strong negative pressure area in the center of rotor 44. Vegetable juice suspension is sucked from the feed hole 48 in the center of rotor 44. Under the action of centrifugal force, vegetable juice suspension spreads from the center to the periphery. During the spreading process, vegetable juice suspension is stirred by rotor blades 45 at first, and sheared between the end face of rotor blades 45 and the narrow gap inside the gear ring of stator 46. Then it enters the narrow gap between the ring gear of the rotor 44 and the ring gear of the stator 46 in the inner ring. Under the action of mechanical force and hydrodynamic effect, it produces great shearing, friction and collision, and the mutual collision and friction between the vegetable juice suspensions, so that the vegetable juice suspensions are crushed and mixed. With the linear speed of the ring gear of the rotor 44 gradually increasing from the inner ring to the outer ring, the crushing degree is constantly increasing. The vegetable juice is subjected to more and more intense shearing, friction, impact, collision, etc. during its outward movement, so that the plant cell wall in the vegetable juice is broken, and the intracellular substances are mixed and emulsified with the juice, and finally flow out into the vegetable juice container 9 through the outlet 49 at the edge of the bottom of the emulsifying cavity 42.
[0051] The above are only the preferred embodiments of the present invention, but the scope of protection of the present invention is not limited to this. Anyone who is familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent substitutions or changes according to the technical scheme and inventive concept of the present invention, and should be covered in the scope of protection of the present invention.
