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introduction：Advantages of vertical self-priming pump in corrosive liquid low conveyor General centrifugal pump when transporting liquid，When the liquid level is below，You need a pump to get the water out。To this end, a bottom valve needs to be installed at the pump inlet。Over time，The bottom valve is corroded or stuck，It needs to be replaced or repaired，So it is very inconvenient to use。Submersible pumps are generally used to transport clean water、River water，When it is used for acid and alkali corrosive liquid transportation, motor corrosion is easy to occur，Electric leakage phenomenon，Very unsafe。When the pump is clogged with garbage, it must be pulled up to clean it，Very inconvenient，So it is rarely used in practical applications。So people built a liquid pump to carry out low，
2014-12-18 Reading quantity 1680
introduction：The type of machinery is different，bearing[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。]Conditions of use will vary，The performance requirements are not only the same，But generally speaking，One shaft has a bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce the friction coefficient of load during mechanical transmission
2014-12-18 Reading quantity 1678
introduction： Reducer equipment maintenance Reducer maintenance knowledge： Reducer is an important part of metallurgical equipment，It is widely used，Large consumption。Failure to repair the faulty reducer in time，It will seriously affect the production and damage the reducer，Its also uneconomical not to repair it。The most used in metallurgical enterprises is a variety of open-wire cylindrical gear reducer，The maintenance is described as follows： General principles of reducer maintenance： 1、 For large reducer must be formulated and strictly implemented reducer repair procedures。 2、 Check and repair regularly。
2014-12-18 Reading quantity 3021
introduction： On many occasions，KOYOThe bore size of the bearing has been specified by the structure of the machine or device。Regardless of service life，Whether the safety factor and economy of static load meet the requirements，In final selectionKOYOBearing before remaining dimensions and structural form，They all have to go through dimensional calculations。The calculus includes willKOYOThe actual load of the bearing is compared with its load capacity。 KOYObearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce the friction coefficient of load during mechanical transmission
2014-12-18 Reading quantity 1577
introduction：For bearing[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。]Long life，Can not meet the general installation and adjustment requirements，We should focus on the following measures： (1)Shift bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is fixed in the process of mechanical transmission and reduces the friction coefficient of load
2014-12-18 Reading quantity 1618
introduction：SelectINAbearing[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。]Type time，The following five factors should be considered： 1)Direction of load、Size and nature：Radial bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce the friction coefficient of load during mechanical transmission
2014-12-18 Reading quantity 1597
introduction：Abstract The design experience of exhaust tank in injection mold is introduced，And several feasible exhaust methods and die structure。 keyword：Injection moulding of exhaust tank 0introduction Insufficient filling often occurs in injection mold trial production。Compressed air burns、High internal stress inside the product、Surface flow lines and fusion lines and other phenomena。In addition to these phenomena, the injection molding process should be adjusted first，Also consider whether the mold gate is reasonable。When the two problems of injection molding process and gate are eliminated；Then the exhaust of the mold is the main problem，The main means to solve this problem is to set up the exhaust tank。
2014-12-18 Reading quantity 2991
introduction： Tool name use Indexable face milling cutter Common form face milling cutter Suitable for milling large surfaces，For roughing at different depths、semi-finishing。 Indexable precision face milling cutter Suitable for applications with high surface quality requirements，For finishing milling
2014-12-18 Reading quantity 3037
introduction： Abstract:The manufacturing difficulties of special rotary milling cutter with ball head are discussed，A non-numerical control machining method is proposed to solve the machining difficulties、New definition and three-axis linkage machining scheme and corresponding mathematical model，The reference is provided for the research and machining of the ball head rotary milling cutter。Special rotary milling cutter is an important tool for machining complex surface，It is widely used in machining。At present, domestic and foreign rotary tool manufacturers mostly use four axes、Five-axis CNC equipment to manufacture special rotary milling cutter(Such as Fenghua machinery factory adopts five-axis linkage machine tool processing special rotary milling cutter)，Pair to five
2014-12-18 Reading quantity 2938
introduction： one、 When mounting bolts，The following requirements shall be met： 1、Fastening time，Use a dead wrench，Do not use percussion methods and exceed the allowable bolt stress。 2、Bolt head、The contact between the nut and the connected part should be tight，Have special contact area and contact gap required，The inspection should be carried out according to the technical requirements。 3、Connections with preload requirements shall be pretightened according to the preload specified in the assembly，Optional machinery、Hydraulic drawing and heating；The heating temperature of steel bolts shall not exceed400℃。 4、After the bolts and nuts are tightened，The bolt should expose the nut2－4Individual pitch
2014-12-18 Reading quantity 1695
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