Two-way rotation grinding device

Abstract

The invention discloses a two-way rotation grinding device and relates to the field of grinding of grinding powder and grinding slurry. The two-way rotation grinding device comprises a material fixing frame, a knife wheel A, a knife wheel B and a stationary grinding sheet, which are sequentially arranged in a material channel. The grain size of the ground material which is discharged can be controlled by regulating a material discharging clearance.

Description

technical field [0001] The invention relates to the field of crushing of powder and pulp. Background technique [0002] The field of pulverizers should include a variety of products at multiple levels such as coarse crushers, secondary crushers, fine grinders, and ultrafine grinders. Generally, the purpose of the grinder is achieved in the form of high-speed impact materials, which is to crush large-sized solids Raw materials are crushed to the required size of the machine. At present, these well-known pulverizer application technologies can be described as dazzling, and the situation of thousands of contenders. Among them, those who can have outstanding performance in the technical field of ultrafine pulverization can be known as colloids. Grinding, homogenizing machines and other equipment, among which colloid mill is a kind of superfine pulverization equipment for grinding colloid or similar colloidal materials, which has been gradually recognized by people and has been r...

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Problems solved by technology

[0003] Among the many kinds of pulverizer technologies, products such as refiners should also be included. They generally have a common feature, that is, one-way rotation, and technologies such as colloid mills and homogenizers can also be included in this category. Among the common features mentioned in the above item, the structure of colloid mill and homogenizer is generally to use the rotating rotor (moving mill) to squeeze the material on the gap between the stator (static mill) to realize rolling, collision, friction and shearing. Cutting and other crushing effects, but the one-way rotating rotor generally can only use its tooth surface to produce the effect of centrifugally releasing and crushing the material, or can only use its tooth surface to produce the crushing effect of involving the material in the direction of the axis. The effective effects of the two cannot be achieved at the same time. Therefore, the negative effects of such a feature in the application field of crushing technology can be known by referring to the reflux circulation device of the colloid mill for crushing fluid materials: for example, "some colloid mill products In order to achieve the ideal homogeneous effect, the material generally has to be ground several times, which requires a backflow circulation device. The backflow circulation device used is generally to install a disc valve on the discharge pipe, and another connection to the pipe slightly before the disc valve. One pipe leads to the material inlet. When multiple cycles of grinding are required, the disc valve is closed, and the material will flow back repeatedly. When the material is ground to meet the requirements, the disc valve is opened to obtain the final desired material.” In addition, another According to the argument pointed out in some reports: "The domestic small colloid mill is often unable to work continuously for a long time due to insufficient power and poor sealing performance." can be further confirmed

[0004] In the technical field of crushing of small home appliance soymilk machines, the structure of the crushing blade generally adopts a fan-shaped blade, and the blade is arranged in a cup-shaped container. Soybeans with a certain amount of moisture can generate a top-to-bottom vortex in the cup-shaped container. The flow resistance of the material in the top-to-bottom vortex allows the blade to crush the material at high speed to obtain the final desired soymilk. Such as food, although there are reports in this technical field that there is a problem of insufficient motor power, but the material can generate vortex in the cup-shaped container, the space in the container should be at least several times larger than the total volume of the material in the container to generate vortex As a result, the slower the motor speed is, the worse the uniformity of the material crushed by the impact of the cutting tool will be. Among them, some users of non-network small household appliances such as soybean milk machines are not satisfied with their requirements. To produce soymilk tastes of different thicknesses, it is necessary to use a filter screen to separate the slag in order to obtain a better smooth taste soymilk; and in the product technology of the mesh-type small household appliance soymilk machine, the outer periphery of the blade is equipped with a mesh cover. Then set the slurry storage container on the outer periphery of the net cover. If the volume of the net cover is equal to the volume of the slurry storage container, the bean dregs may be more than the soybean milk. The vortex function at the bottom does not have the function of completely discharging all the soybeans out of the net cover. When the blade is stopped, there will still be a whole residual residue in the net cover cavity which was originally designed to store the whole soybean material. Discharge, these residues will not only cause waste of food raw materials, but also make users feel troublesome in cleaning up these residues

[0005] Among them, the two technologies of the well-known patent documents ZL201010019254.X "Bidirectionally Rotating Grinding Device" and ZL201110042696.0 "Bidirectionally Rotating Grinding Device" provide a kind of material that can be refluxed and crushed without setting an external reflux circulation device. , It can gradually shear or grind larger materials, the gear decelerates and amplifies the torque to increase the shearing force, and the speed of crushing the material on the inclined surface of the double-knife wheel slit does not affect the effect. It can be compared with the colloid mill, etc. The product uses the V-shaped stator and rotor tooth faces to grind large and small materials at high speed and comprehensively, which can reduce the motor load to a certain extent. The product is suitable for small power motors in working environments that require a small amount of crushed materials. The transmission is not only suitable for the application of products in the field of small household appliances, but also has the advantage of being suitable for uninterrupted work in the industry. Or the pore size of the sieve is not yet known to have a product that can adjust the pore size arbitrarily, even if it is a sieve or sieve product that can adjust the pore size arbitrarily, it will also increase the configuration of the screen or sieve. Therefore, if the two items are used For products composed of technical solutions, if you want to obtain a variety of finished materials with different particle sizes, you need to be equipped with a variety of filters or sieves of different specifications, which will eventually lead to too many pulverizers and increase manufacturing costs.

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