Shanghai Guilong eccentric hemisphere valve is one of the ideal products of our company. We have many years of production technology and experience. I am fully confident that our products will be more ideal and perfect.
The Guilong double eccentric hemisphere valve utilizes the eccentric valve body, the eccentric ball and the valve seat. When the valve stem rotates, the common trajectory is automatically centered, and the closing is tighter and tighter, which completely achieves a good sealing purpose. The ball and seat of the Guilong valve are completely detached, eliminating the wear of the seal ring and overcoming the problem of the wear of the traditional ball seat and the ball seal surface. The non-metallic elastic material is embedded in the metal seat, and the metal surface of the valve seat is well received. protection. This product is especially suitable for the steel industry, aluminum industry, fiber, tiny solid particles, pulp, coal ash, petroleum gas and other media.
Shanghai Guilong double eccentric hemisphere valve overview: Eccentric hemispherical valve product features: First, the sealing pair (spool, valve seat) - bimetal, to achieve a metal spherical ring with a hard seal, fire and explosion protection; Second, the seal is tight, the valve core and The sealing of the valve seat is the spherical line contact, and the three-dimensional eccentricity realizes zero leakage. Third, the valve core of the sealing pair has a compensation amount. When the valve is used for a long time, it is only necessary to loosen the limit bolt on the hand wheel side when the sealing pair is worn. When turning off a little, it can still achieve a reliable seal and prolong the service life. Fourth, the compression sleeve can be screwed off, the valve seat can be adjusted or replaced, and the valve can still be used continuously, which avoids the drawbacks of the whole machine after the valve seal fails. The choice of bimetal sealing pairs for different alloys (or combination balls) for surfacing can be used for wear, corrosion, high temperature and tight sealing conditions.
1. Double eccentric hemisphere valve uses: general valve, pipeline valve, slurry special valve, gas special valve, petrochemical special valve, pulverized coal injection special valve six series. In the petroleum, chemical, metallurgy, electric power, gas and other industries, it is a new generation of gate valves, globe valves, Y-valves and ball valves. At present, it has been sold in the iron and steel industry, the pulp, mother liquor and alumina powder in the alumina industry, the hydraulic (or dry) ash removal in the power industry, the petrochemical industry, the gas industry and other occasions.
Shanghai Guilong double eccentric hemisphere valve use range: 1, general valve: reasonable design, compact structure, small flow resistance, good sealing, light and flexible operation, especially suitable for low pressure pipe network of water, sewage, steam, pulp and other media, It can be equipped with electric and pneumatic devices for remote automation. (non-corrosive media such as water, steam, sewage, pulp, mud, etc.). 2. Special for pulverized coal injection: It is an ideal equipment for solid conveying such as pulverized coal injection for controlling dusty gas and granular fluid. It is widely used in blast furnace pulverized coal injection and pulverizing system in metallurgy, mineral processing and electric power production processes. And various pipeline controls in the dust removal system. It adopts straight-through structure, the flow channel is unblocked, and there is no clogging phenomenon. The sealing pair is made of Co-Cr-W alloy material. After special heat treatment, the valve is resistant to abrasion and wear, and the valve eccentric spherical surface has automatic compensation performance. By adjusting the bolts on the worm wheel, the sealing pair can still achieve the effect of re-sealing if it is worn to a certain extent. (dust-containing gas, granular fluid) 3, special for petrochemical industry: for the petrochemical industry, the use of high pressure, high temperature, full of flammable, explosive, generally weak acid and alkali weak corrosion medium, with good sealing, corrosion resistance, It is light and easy to cut off the scale of the valve surface. It is suitable for medium transportation such as crude oil and heavy oil, as well as petroleum cracking and food production. (oil, gas, gas, water, etc.). 4, blast furnace gas, gas special: sealing pair using Cr-Mn-Si hard alloy, fire-resistant explosion-proof anti-static, sealing pair high temperature 560 ° C, its corrosion resistance and seizure resistance are more than 6 times the stainless steel sealing pair, especially It is suitable for use in pipeline transportation and pressurized gate station of gas, coke oven gas, water gas, liquefied gas and natural gas. (Blast furnace gas, natural gas, dusty gas, etc.). Special slurry mixing fluid: It is the ideal process valve for transporting two-phase mixed fluid medium in the process of easy precipitation and scaling, crystallization crystallization of slurry, slurry ash and other processes. It can break the fouling obstacles during shutdown and achieve a smooth shutdown. The utility model has the advantages of novel structure, unique design, high efficiency, energy saving, good wear resistance, reliable sealing, light operation, quick opening and closing, and long service life. (Process slurry, slurry ash and other particulate matter transport) Pipeline special: It belongs to straight-through hemispherical valve, no shrinkage diameter, the valve body channel and the pipe connected to the pipeline are connected by straight pipe, the cross-sectional area is equal, the resistance is less than the diameter reduction, all Open and fully closed can be achieved by turning 90 degrees, which is convenient for long-distance pipeline transportation control. (Pulverized coal injection and gas transmission)
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