Two-bq eccentric and a half ball, the ball was carefully weighed, butterfly valves, gate valves and many premise of the strengths and weaknesses, learn from Germany and the development of similar products made of all the innovative products, concluded that the identification: In some ... Aspects of the use of performance more than valve, the valve and ball valve, and other similar products can be applied to petroleum, chemical, electric power and metallurgical industries as detailed in the original ... [Chemical Industry Science and Technology] outcome of the identification certificate, the core of Technology is a national initiative, the design of its unique structure of the novel, has been the five patents. Products on the market over the past five years, subject to the approval of customers, expanding the scope of the order, indeed, on various occasions to replace the ball valve, butterfly valve,gate valve and other valves, compared with what it has been in trouble?

First, using the structure of eccentric - tight wedge principle. And rotary valve spool center (that is, the stem axis) of the valve core and sealed spherical geometry of the center of a radial bias size, valve seats and valve sealing surface in the channel axis there is a bias on size, sealed for the vice Metal - external force under the metal contacts, the two valves rely on to achieve self-locking closure of the eccentric, eccentric self-locking make reasonable matching angle is less than the friction angle, the angle self-locking closure of small selection of easy, open the special difficulties in the perspective of big election Although a small force to open, but shut down the rapid increase in torque, the test stand trial and error to determine the two with a reasonable amount of eccentricity is essential, reliable self-locking performance to ensure that its tight seal. This is the core technology of the ball and a half, and the structure Principles from the manufacturer through the means to achieve the best seal, the ball valve, butterfly valve, valve, the valve closed, and so there are less.

Second, easy to achieve and maintain long-term zero leakage. Spool valve seats and the Line Spherical contact is sealed by the realization of eccentric self-locking, sealed in the Under-gate the entire process is virtually non-contact, only to hoist the moment, the only contact gates and bear zero leakage to ensure that the dynamic seal Department without any leakage point. Seat on the scale or other deposits, the spool in contact with the valve seat, has a clear power scaling. The valve sealing surface of the headstock in the frequent movement back and forth, mixed medium scale precipitation in the lower part of the body cavity, the cut-off valve is totally dependent on the realization of the pressure seal, valve seats on the non-scale clean-up capacity of the two packing The often repeated easy to wear and tear caused by valve, the valve to vent the inside leakage. Depends on sealed ball valve seat at the long-term squeeze the ball on the surface, the more it will definitely wear a half ball quickly, butterfly valves for the intermediate rubber seal on it than the semi-ball valve, ball valve, gate valve of a hard metal sealing a far cry from the performance. Ball and a half after the long-term use, the seat will have a micro-abrasion, it can continue to use the adjustment, filling in the Stem and hoist only the process of stem rotating 90 °, there are signs of leakage, pressed again fillers of the gland A few bolts, packing can be realized without leakage Department, and the other valve is still just a small leak, large-for-valve leakage. Aluminum China Guangxi Branch (media work: red liquid mud, strong lye solution) used in the report that "... ... the operation of the valve (open, customs) to facilitate easy, easy maintenance, well airtight performance, and general valve Compared to a long life, ... From July 2001 to use so far (in the last three years has been working - editor) did not find any mechanical problems and leakage problems from the labor intensity, energy saving and leakage are very popular. "

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Third, the operation is extremely light. Headstock and a half ball the whole process of sealing vice almost all non-damping idling in a state, just outside the gate or from the moment pressed, and the only stem rotating 90 ° light and rapid operation of the Light, of course. Ball at the gate is in the process of the two ends of the valve seat under the operation of the power to hold fast to it than that moment headstock and a half ball, the greater the nominal diameter, the more obvious difference between the headstock moment, the butterfly valve gate is to overcome the rubber The deformation to the realization of greater moment. The valve, the valve operation for a long time and effort. Zhengzhou Gas Company in the use of the report, said: "Since 99 years, has your company from its purchase of production 'dark horse' ... Baiyu Tai ball half licensed, have not yet found quality problems ... and the company's products than the general structure of the valve A new door in the operation, lighter ball than the ordinary ... ... "; Shanxi branch of China Aluminum to use the report said:" ... from ... the use of products that your organization bq double eccentric ball and a half years, and used in Butterfly original, gates Valve, y-valve, able to switch in place, flexible and lightweight, easy to use, reducing labor intensity, welcomed by the workers ... "!

Fourth, long service life. Vice belonging to the two-metal sealing, surfacing in the mother's use of different alloys, with a special heat treatment, its physical and chemical and mechanical properties of the best indicators of up to meet the needs of different operating conditions (wear and tear strength, the rapid erosion, corrosion, and other serious media) The needs of the valve seat is slightly lower than the valve core hardness, different materials and different heat treatment process, the necessary seal of the Vice-hardness up to more than hrc53 also resistant to high temperature 560 ℃. Practice has proved that its anti-corrosion and anti-sealed stainless steel is the ability to bite the vice-6 times, gate valves on and not lapse million, to extend the service life. Wuhan Iron and Steel Company in the use of the report, said: "bituminous coal injection in a procurement project your hand, electricity, air-ball, no use during the deposition, switching flexibility, good sealing performance, in charge of online The ball valve and a half with the introduction of foreign equipment, better facilities, and various types of valves is only equivalent to the price of similar foreign equipment, the price of 15-20%, the Wuhan Iron and Steel Works bituminous coal blowing a save investment, the use of ... ... nearly three years, the situation Good, cost savings, a reduction of equipment failures and reduce labor intensity of the workers, led by iron and managers praise. " Another example: Beijing Shougang in the use of the report, said: "I have five new plants in the coal pulverizing system, test the installation of the 'dark horse' license and a half to replace the original ball has been using the ball more than 10 months, the product has to prove the use of open Flexibility, tightness, pressure on volatile sources of wind, the use of the characteristics of stability, for use in winter is highly adaptive, ... ... more suitable for the use of harsh working conditions, I request as a result of factory production process requirements of the characteristics of each 20 One-minute switch, so more than half a year of the trial period has been closed to open nearly 10,000 times, does not appear abnormal, pulverized coal to meet the system requirements ... .... "

V. wide range of applications. I am more than the company's family of semi-ball variety widely used in non-ferrous metallurgy, gas and natural gas, steel and dust of pulverized coal injection, slag lose power, harmful gas (hydrogen sulfide, phosgene, etc.) and oil (heavy oil, crude oil, residue And so on) refining and distribution. It is wide range of applications, mainly due to the different sealing vice respectively, hardfacing alloy, make it a two-metal body, stem and other major parts needed to use the material to meet the needs of different operating conditions, constitute our company for a variety of products Series

"Black card" bq eccentric two-ball half-light and flexible operation, long service life, the wear and tear can be automatically compensated eccentric wedge tight automatically clear the scale, zero leakage. It's widely used greatly reduce the maintenance downtime, reduce operating costs, in many occasions replacement ball valve, gate valve, the valve has become an inevitable trend.