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introduction： (one)Definition of clean room Clean room(Clean Room)，Also known as clean room or clean room。 「Clean room」It refers to the small particles in the air within a certain spatial range、Hazardous air、Removal of contaminants such as bacteria，And the temperature of the room、cleanliness、Room pressure、Airflow velocity and airflow distribution、Noise, vibration and lighting、Electrostatic control is within a certain requirement range，Specially designed rooms are given。That is, no matter how the external air conditions change，Its interior can maintain the original set requirements of cleanliness、Temperature, humidity and pressure characteristics。 The clean room is the most important
2015-02-22 Reading quantity 2794
introduction：A pump specially designed for metering and conveying liquids。The vast majority of metering pumps use the structure of plunger pump and diaphragm pump(See reciprocating pump)﹐Also useful gear pump structure﹐Because they can maintain a constant flow independent of the discharge pressure。Metering pumps have two kinds of flow adjustable and non-adjustable﹐The former has wider applicability。The flow rate is mainly regulated by changing the stroke length﹐For example, change the crank radius﹑The position of the rear dead center and the clearance at the connection between the plunger rod and the crosshead when the plunger returns﹐Flow can also be adjusted by changing the number of reciprocations or using both methods。Although the stroke length can be adjusted from zero to maximum﹐But in order to ensure the accuracy of measurement﹐generally
2015-02-22 Reading quantity 2801
introduction：Principle of planetary gear reducer one、 New typeNGWPlanetary gear reducer 1、This series of products is in accordance with national professional standards JB / T6502–93design-produced； 2、First selection of this product，Please calculate the selection in detail，Or consult our company； 3、The company has accumulated many years of planetary reducer manufacturing technology，Independently designed and manufactured many varieties、Heavy-duty non-standard planetary transmission gearbox。 two、 NGW APlanetary gear reducer 1、This series of products refer to national professional standardsJB1
2015-02-22 Reading quantity 2927
introduction：Programmable controller(Programmable Controller)Is a member of the computer family，It is designed and manufactured for industrial control applications。Early programmable controllers were called programmable logic controllers(Programmable Logic Controller)，For shortPLC，It is mainly used to replace the relay to achieve logic control。With the development of technology，The function of this device has greatly exceeded the scope of logical control，therefore，Today such devices are called programmable controllers，For shortPC。But to avoid it with a personal computer(Per
2015-02-22 Reading quantity 2924
introduction： Chinas direct drive permanent magnet wind turbine skills have been recognized by foreign wind power market 2month3day，The final batch of wind turbines supplied by CNR Yongji Motor Co., Ltd. has been shipped at the Port of Shanghai。So far，The company exports to India100Taiwan1.5MWDirect drive permanent magnet wind turbine all handed over。It indicates that Chinas direct drive permanent magnet wind turbine skills have been more and more recognized by foreign wind power markets。 According to the Lawrence Berkeley National Laboratory in California, USA(LBNL)Statement of，Indias wind power potential is high3000gigawatt。As everyone knows，India has always had plenty of electricity
2015-02-22 Reading quantity 2801
introduction：The internal stress of injection molded products is due to improper molding、Temperature change、Stress caused by solvent action, etc。Its essence is the formation of high elastic deformation frozen in the product。 Internal stress can affect the properties of molded products，It will also reduce the mechanical strength of the product perpendicular to the direction of flow，Causes plastic products to crack。 The internal stress has the orientation stress、Volume temperature stress、And the deformation stress of the product during release。 Dispersion and elimination of internal stress： Plastic material：Impurities in materials can easily cause internal stress，Multi-component plastic groups should be evenly dispersed，well-vented，The particles are plasticized uniformly during granulation，Product internal stress
2015-02-22 Reading quantity 2796
introduction：The problem of poor bearing capacity often occurs in the operation of the reducer，According to the analysis of the working principle of Zibo reducer，There are three factors that affect the bearing capacity of the reducer： 1.The effect of the reducer itself The manufacturing accuracy and running speed of gear are the internal factors that affect the bearing capacity of reducer。The ideal motion of the gear pair is that the input and output speed are constant values，Due to gear machining、The existence of assembly errors，Gears move relative to each other during movement，Lead to transmission errors and gear vibration，Internal additional load is brought to the gear，At this time, the reducer will produce a larger noise
2015-02-22 Reading quantity 2783
introduction：Working principle The butterfly pump relies on two butterfly rotors to rotate synchronously in reverse，Vacuum is generated at the inlet，Thereby inhaling the material to be transported。As shown above，The rotor chamber is enclosed in one space with the end cover，Two rotors divide the space into several smaller Spaces，Double pressa→b→c→dSequence run。In positionawhen，Only the inlet is filled with medium；To positionbwhen，AThe chamber is partially enclosed in the medium；To positioncwhen，AThe chamber communicates with the exit，meanwhileBThe chamber is partially enclosed in the medium；To positiondwhen，BThe room is the same as the exit。The rotor spun without ceasing，interface
2015-02-22 Reading quantity 2787
introduction： The wall thickness of the strut protruding glue is used for assembly products、For separating objects and supporting other parts。Hollow struts can be used to insert pieces、Screw up。These applications must have sufficient strength to support the pressure without rupture。 Try not to use the prop alone，It should be connected to the outer wall or used with the stiffener as far as possible，The purpose is to strengthen the strength of the pillar and make the rubber flow smoother。In addition，Because the pillar is too high, it will cause gas trapping when the plastic parts are formed，Therefore, the height of the pillar is generally not more than two and a half times the diameter of the pillar。Method of strengthening the pillar”Especially struts away from the outer walls〔，In addition to usable
2015-02-22 Reading quantity 2878
introduction：A component that provides a timed ration of high pressure fuel to the injector。It is the main component of diesel engine injection system。Commonly used in diesel engines are plunger type fuel injection pump and distribution type fuel injection pump。Plunger fuel injection pump has good performance，Reliable use，It has been widely used。Distribution fuel injection pump Yes20century50A new type of fuel injection pump appeared in the late 1990s，It has the advantage of being light、Low cost、Easy to use。 Plunger fuel injection pump diagram[Plunger type fuel injection pump pumping principle]It is the pumping principle of plunger type fuel injection pump。A chute or spiral groove is milled on the cylindrical surface of the plunger，Groove of the inner cavity with the plunger above the pump
2015-02-22 Reading quantity 2775
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