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introduction：It is not difficult to determine the right circuit protection device for a specific application，But it does take some thinking。If electrical and electronic equipment is designed with loosely defined circuit protection devices，The equipment will be easily damaged by power shock and lead to catastrophic consequences of fire，conversely，If the specification of the circuit protection device is too strict，It will cause annoying frequent trips。 At present, the main circuit breakers are thermal circuit breakers、Magnetic circuit breaker and ground leakage circuit breaker and so on。When selecting a circuit breaker，Designers need to consider not only the following circuit characteristics，Consideration should also be given to including circuit breakers
2014-12-19 Reading quantity 2971
introduction：Electromagnetic clutch It is an important functional accessory in modern mechanical and electrical products，It mainly plays two roles in the transmission of power and control of motion in the mechanical transmission system，Apply it to a mechanical device，It is of great significance to realize mechatronics and improve weighing rate and automation level，Because it has a compact structure，Simple operation，Easy to use and maintain，Easy to realize the advantages of remote operation and automatic control，Therefore, it is particularly suitable for motion control and automation，It is the most reliable and economical solution for automation。 In particular, the single-disc electromagnetic clutch and the brake and its combination clutch，Loss of power brake, etc
2014-12-19 Reading quantity 2878
introduction：one、Basic situation （1）Industry profile According to the1995National statistics for the year，Chinas textile printing and dyeing industry has a total of about54000Domestic production enterprise，Accounting for the total number of enterprises in the country9.8 %，among90％For small and medium-sized enterprises。Total number of employees in industry1263Thousands of people，Total output value of the whole industry6000Hundred million yuan，Pay profits and taxes245Hundred million yuan。1995The year was produced in our country270Ten thousand tons of fiber，Amount to500Tons of yarn。Our country is the most important fiber、One of the textile producers and exporters。 （2）Primary raw material The raw materials used in Chinas textile industry are mainly natural fibers，cottoniness
2014-12-19 Reading quantity 2981
introduction：First step：Carry on the feasibility analysis to the product of the designed mold，Take a computer case, for example，Firstly, the product drawings of each component are analyzed by using design software，Thats what we call a set of maps in our work，Ensure the correctness of each product drawing before mold design，On the other hand, you can familiarize yourself with the importance of each component in the chassis，To determine the key dimensions，This is very good in mold design，The specific set of diagram methods will not be introduced in detail here。 The second step：The work to be done after the product analysis，What kind of mold structure is used for product analysis，And the product scheduling process，
2014-12-19 Reading quantity 2885
introduction：oilingIKOThe lubricant inside the bearing can be broadly divided into two kinds: oil and grease。 Repair method：reserve：Dry towel、pincers、IKOBearing cleaning night、IKOBearing oil or lubricating grease。 1、desiccation：theIKObearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Remove from the cleaning solution，Use a dry towel
2014-12-19 Reading quantity 1548
introduction：becauseKOYOThere is a wide range of bearing types，The following will focus on the most widely used deep groove ball bearings[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The use and selection of some analysis。Hope bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce load friction during mechanical transmission
2014-12-19 Reading quantity 1643
introduction：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]In addition to excellent quality，Its a very sophisticated part，Both are high performanceNSKbearing[NSKbearing:Seiko
2014-12-19 Reading quantity 1640
introduction：Lubrication of reducer，Reduced service life。For this purpose，Normal oil level must be maintained during use。 h.Install a sealing gasket at the sight hole cover and the oil drain hole，And tighten the bolt。 l.Increase the oil return hole of the output shaft，Prevents oil leakage from output shaft。 Improved vent cap and inspection hole cover The internal pressure of reducer is greater than the external atmospheric pressure is one of the main reasons for oil leakage，If you try to make the machine inside、External pressure equalization，Oil spills can be prevented。Although the reducer has a breathable cap，But the vents are too small，Easy to be pulverized coal、Oil blockage，And open the cover of the inspection hole every time you refuel，Opening it once increases the chance of an oil spill
2014-12-19 Reading quantity 2971
introduction：Working principle FGThe working principle of the series dryer is to complete the drying of wet materials in two steps。The raw material is first dried by a mixture of secondary drying tail gas and supplementary hot gas，After the use of low temperature and high humidity exhaust out of the machine，The semi-finished product is dried by fresh hot air under secondary negative pressure，Dry finished product metering packaging，The used high temperature and low humidity exhaust gas is used for primary drying，Thus a good cycle drying process is completed，The added hot air volume can be adjusted as needed，The machine is therefore widely applicable，Its other airflow dry compared、20%-48%，Thermal efficiency80-88%。 Application pattern
2014-12-19 Reading quantity 2889
introduction： Current national standard directory（valve） Serial number Standard number Standard name Substitute standard number Bid acquisition situation 1 GB/T8464-1998 Water heating valve with internal thread connection GB8464-87 GB8465.1~.8-87 2 GB/T12220-1989 Universal valve mark JB106-78 MOD ISO5209-1977 3 GB/T12221-1989 Flanged metal valves Structural length JB97~98-75 JB
2014-12-19 Reading quantity 3025
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