If domestic horizontal mixer wants to move towards a good development path, it must make its own innovation

Pharmaceutical equipment is a small crusher machinery industry with rapid growth in recent years. It is also one of the few areas in which the domestic machinery industry as a whole still maintains good growth momentum under the situation of development difficulties. However, in recent years, the industry has encountered many difficulties in the process of attacking the high-end field, which is mainly caused by the lack of innovation in the industry for a long time.

As a technology-intensive industry, innovation should be the vitality of industry development. But due to the limitation of the level of development and technical capacity, the domestic small crusher industry innovation vitality is insufficient, especially in the field of high-end equipment, imitation is still the main means of production.

Experts believe that this is mainly due to the expansion of the domestic pharmaceutical industry, in the past decade, the domestic pharmaceutical industry has maintained a surprising momentum of development, the annual growth rate of more than 15% of the achievements of the small crusher industry market space. Therefore, the domestic small mill industry has formed a relatively complete industrial system and is a huge market size, and actively carry out the transformation and upgrading of the industry. It is reported that there are two main modes of domestic high-end pharmaceutical equipment production: one is the core components rely on imports, domestic equivalent to assembly processing; The other is the clone mode, which is the mode of introduction - mapping - drawing - assembly - improvement. As a result, domestic high-end pharmaceutical equipment is mainly imitation, the widespread existence of "copycat" phenomenon.

At present, the first step of domestic high-end small grinder independent innovation is to get rid of the import of core components and key technologies, from research and development to be recognized by the market, domestic high-end small grinder still has a long way to go. High-end pharmaceutical equipment can not be made by imitation. Due to the accumulation of high-end pharmaceutical talents and technology in China, the situation of large-scale import of high-end pharmaceutical equipment from abroad will not change in a short time.

Small grinder in the use of the process of all parts of the accessories to cooperate. Centrifugal extension is one of them. In the process of use, we should pay special attention to the determination of wind pressure, wind speed and wind volume. About the determination of these things, there may be people who do not know how to operate.

When measuring the pressure of centrifugal fan of small mill, pitot tube is used together with various pressure gauges. The pitot tube is used to receive and transfer the pressure of the airflow, and the manometer indicates the pressure value to be transferred. At present, the commonly used pressure gauge is U type pressure gauge, tilt type pressure gauge and so on.

The material such as usable copper, stainless steel tube is made by oneself. Pitot tubes have two pathways. One is a small hole left in the center of the end, which is measured to receive the total pressure against the airflow. The other has a few holes in the side wall, the measurement of the hole vertical thousands of airflow, accept static pressure. The pressure difference between the two pressure gauges is the dynamic pressure (velocity head) at the point.

The retaining rod part is fixed on a spindle with the centrifugal blade part and the hammer rotor part of the small mill. The position is between the two, in order to pull out the pin shaft from the baffle plate and end plate of the hammer rotor, so as to facilitate the installation and maintenance of the hammer handle, the stopper rod is at an Angle of 60 with the hammer rotor part, and at an Angle of 30 with the centrifugal blade.

A tapered housing is fixed on the housing at the outer circumference of the stopper rod. The conical shell acts as a collector for the centrifugal fan to ensure the smooth flow of air from the hammer rotor cavity into the centrifugal fan cavity. In addition, the clearance between the stopper rod and the conical shell can be adjusted to control the crushing particle size of the material, so that no large material collapses into the cavity of the centrifugal fan. In this way, the negative effect caused by axial flow blades is reduced, and the defects of coarser particle size after removing axial flow blades are overcome.

The above is what we need to remember when we measure the wind pressure, wind speed and air volume for the small crusher. We should pay attention to it when we work.