The characteristics of the two-way pressure butterfly valve We can quickly understand the advantages of the two-way pressure butterfly valve. 1. Two-way pressure butterfly valve is a two-way pressure-bearing, two-way stainless steel metal hard seal, simple and compact structure, light weight, easy operation, reliable performance, complete functions, elegant appearance, easy maintenance. 2. The butterfly plate of bidirectional pressure butterfly valve adopts a balanced structure. This structure has good rigidity, large flow area, and small flow resistance, so when the valve is fully opened, it is not easy to produce the phenomenon of jitter. When the valve is fully closed, it can effectively prevent the seal ring. Excessive deformation prevents leakage of the valve due to damage to the entire seal ring. 3. The sealing surface of the valve body is sealed with stainless steel. The stainless steel seat material has good scratch resistance, cavitation resistance and hardness stability. 4. The bi-directional butterfly valve butterfly seal ring can be easily installed in the valve body after the butterfly valve is installed. Replace and adjust. First, in the chemical industry, anti-corrosion valves are commonly used. There are as many as thousands of anti-corrosion valves. Now take the valve seat of the bidirectional butterfly valve as an example, talk about its processing technology. Second, special tool design The writer has continuously explored improvements and designed a set of special tools for machining two-way butterfly valve sealing surfaces. Using the principle of leverage, the circular rotating motion is converted into the oscillating motion of the tool, so that the arc spherical surface of the sealing surface is processed. Just adjust the tool size slightly to process different series of sealing surfaces. The requirements for the technical level of workers' operations have also been greatly reduced. Third, parts analysis The part is a simple sleeve type part, and the main processing surface has an arc R and a radial hole D. Bi-directional butterfly valve parts require that the inner machining surface is concentric, so the inner arc and inner cone should be processed at the same time under one installation condition. The wall thickness of the parts is small and the material is PTFE, which is easy to deform. Therefore, during the machining process, the direction and point of action of the clamping force should be taken into account. The bearing of the bidirectional butterfly valve is made of steel back composite material. The inner surface layer of the two-way pressure butterfly valve and the valve shaft is PTFE. This material is equivalent to foreign DU type, and the operating temperature is -200 to 280 °C. The self-lubricating performance is good. long life. This article comes from: Bi-directional butterfly valve company network / electric control valve Pulverizers are machines that pulverize large solid materials to the required size. Pulverizer Machine,Crushing Machine,Milling Machine,Grinding Mill, Grinding Machine JIANGYIN CITY XUAN TENG MACHINERY EQUIPMENT CO.,LTD , https://www.xuantengmachine.com
According to the size of the crushed material or the crushed material, the mill can be divided into coarse crusher, medium crusher, fine mill and superfine mill. There are four kinds of external forces applied to the solid in the grinding process: pressing, cutting, impact and grinding. Press rolling is mainly used in coarse and medium crushing, suitable for the crushing of hard materials and bulk materials. Shearing is mainly used in fine crushing, suitable for the crushing of ductile materials. Impact is mainly used in medium crushing, fine grinding, ultrafine grinding, suitable for crushing brittle materials. Grinding mainly in fine grinding, ultrafine grinding, suitable for small pieces and fine particles.
The crusher makes use of the high speed relative motion of the movable tooth plate and the fixed tooth plate, so that the crushed object can be crushed by the comprehensive action of tooth impact, friction and the impact between the materials. The crusher is suitable for crushing Chinese herbs, precious medicinal materials, ores and chemical raw materials in small batches in various varieties, alloys, metallurgy, geology, scientific research and other units.
The pulverizer machine has the advantages of simple structure, solid, stable operation and good crushing effect. The pulverized material can be discharged directly from the grinding chamber of the main machine. The particle size can be obtained by replacing the mesh screen with different aperture. The powder collecting chamber adopts the completely closed silencer structure, which can effectively reduce the working noise. In addition the machine is all stainless steel. The inner wall of the casing is machined to achieve smooth surface, which changes the phenomenon of rough inner wall and powder accumulation of the previous models, so that the production of drugs, food, chemical industry and so on is more in line with national standards and meet the requirements of GMP.