机械部件8

  The application of  gravel pump  is use the gravel pump to transport medium such as ore pulp. The pump transports various concentrations of the iron ore pulp in the mineral processing plant. Therefore, the pump needs have the properties of corrosion resistance, abrasion resistance, non-blocking, easy to repair and replacement of shaft seal parts. Because the working environment is bad, if the pump parts without the properties, it may cause a slurry pump to wear out serious, low reliability and high power consumption. Slurry pump is a new type of high-efficiency energy-saving products. The structure and hydraulic design of a series of the gravel pump are reasonable. The flow parts using high-hard alloy cast iron or rubber manufacturing. The sealed form may use the packing according to the different user requests. The auxiliary impeller uses the mechanical seal or the compound seal.   Our pump has the advantages of reasonable structure, high efficiency, lightweight, ...

  The main reasons for coal washing are to reduce the transportation cost, reduce the ash content to improve the efficiency of power plant and reduce the generation of harmful gases to protect the environment. In addition, a large number of power plant ash has caused a major disposal problem, which can be better replaced by landfill excavation area, in the mine cleaning and disposal of washing waste.   1> What is coal washing ? Coal from mines is a complex mixture of materials with various physical properties. In addition to the coal itself, the mixture contains rocks, sand and various minerals. Therefore, coal must be cleaned before it is sold to consumers. Coal washing is accomplished through one of two main processes, namely density separation or froth flotation. Both processes depend on the fact that the particles from which the coal samples are made have different densities.   2>The crushing operations in the coal preparation plant mainly have the following req...

    The abrasive wear of solid particles is the fundamental difference between the design and application of slurry pump and ordinary  centrifugal pump . Wear is a complex phenomenon which depends on many inherent characteristics of pump and pumped slurry. Scholars at home and abroad have been doing theoretical and experimental research on wear mechanism for many years. However, it is still not fully understood. There are many wear design factors of slurry pump, and the wear mechanism of different parts and different parts is not the same, but in general, it can be summarized into three categories: 1. Erosion wear During the operation of  Yijia  slurry pump , solid particles carried in the liquid impact on the surface of flowing parts   at a certain speed, resulting in material loss. The erosion wear mechanism can be divided into cutting wear, deformation fatigue wear and cutting + deformation composite wear. The failure analysis of volute and protective pl...

  What Is a Deep Groove Ball Bearing Deep groove ball bearings  are the most common type of ball bearing.   They are commonly used in electric motors and in household appliances, car motors, office machinery, automation control, and garden and household tools. They have deep raceway grooves and their race dimensions are close to the dimensions of the balls that run inside.   Deep groove ball bearings come in many sizes, materials and varieties according to consumer needs, including special industrial uses such as high-temperature applications. High-temperature bearings are made to withstand temperatures up to 350°C (660°F) and are suitable for machines used in the metals industry or for industrial ovens.   They fall under two designs there are single-row deep groove ball bearings with a single row ; and there are double-row bearings, which have two rows of bearing balls. They can also be made in different sizes and for different loads according to their applicat...

  Practically everyone needs mechanical tools to help ease the burden of manual lifting or shifting. We may not be aware how as small as a spring inside a wristwatch can fulfill its exact function, but this seemingly small part has a big contribution to the overall operation of the system where it belongs. Washers , for instance, come in different designs and sizes, each with a designed purpose. Novices might not be able to tell the difference between the different kinds of washers, let along understand which one to use. This guide aims to help you determine which kind of spring you should use: coil spring or Belleville spring. Basic principles of a spring Coil springs and   Belleville springs  follow the same working principle as follows: The force is removed to release energy and return the spring back to its original position such as springs found on mattresses. When the spring is compressed, it produces potential energy such as those found on toasters. The force gener...

A common frustration we hear from equipment users turning to us for assistance is that their universal joints   don't hold up as expected. Low quality or poorly designed joints can result in loss of usefulness, partial machine malfunction or complete failure. Below are some common bad u joint symptoms production and maintenance associates might encounter:   Corrosion   Depending on the level of humidity in the environment, components can erode over time, even without exposure to harsh substances.   Solution: Stainless Steel Universal Joints Various grades of stainless steel joints can deliver moderate to extreme corrosion resistance. When selecting the appropriate grade, factors such as welding, machinability and strength must be taken into consideration.   Friction And Heat Generation   Pin and block universal joints shaft cross   often used in industrial applications operate with friction between the component surfaces. Without proper lubrication, th...

Drill pipe  plays an extremely important role in the drilling process. If the drill pipe is not used and maintained properly, it is easy to accidentally break the drill pipe because the probes attached to the drill pipe are worth a lot of money, ranging from a few thousand dollars to tens of thousands of dollars. Once the drill pipe breaks, this will be a major economic loss. So how do we use and maintain the drill pipe? 1. When using new drill pipe for the first time, wipe the protective grease from the threads of the drill pipe, clean the inner wall of the drill pipe with air or water, and then apply thread oil to the inner and outer threads of the drill pipe to prevent damage to the threads or fasteners.   Oil drill pipe 2. When drilling, try to ensure that the drill hole is vertical to avoid premature wear of the drill pipe caused by skewed or bent drill bits. 3. A starter rod should be connected between the impactor and the first drill pipe, otherwise the first drill pipe...