The coal dumper is an automatic pick-up machine, a type of car dumper, and the hourly capacity is 54 cents. The team is designed by three British companies. The fixing of the train on the dumper is completed by the hydraulic system operated brake and the axle plate. The hydraulic station is set on the dumper and is turned over with the dumper operation. In order to adapt to the change of the oil quantity in the fuel tank with the action of the actuator, the vacuum is prevented from being generated in the fuel tank, and the skin bag is installed in the oil tank. When the oil quantity in the oil tank is reduced, the inflation volume of the skin bag is increased, and vice versa. In theory, as long as the volume of the skin is large enough and the elasticity is good, there is no vacuum in the fuel tank. However, in actual use, it takes only about 45 seconds for the dumper to complete the reversal. It is very fast, and the inflation and exhaust of the bladder cannot be synchronized. Therefore, the vacuum in the fuel tank is often formed, and the outside air enters, causing the actuator to return to the position and the oil in the fuel tank. When the amount increases, the pressure in the fuel tank increases due to the presence of air, and the fuel tank safety valve opens the fuel injection. This will cause a vacuum when the lower cycle is reversed, the intake air is advanced in the fuel tank, and then the fuel is injected, and the vicious cycle. Not only pollution of equipment, resulting in maintenance and maintenance difficulties, but more serious is to bring hidden dangers to the normal operation of the equipment, and cause major accidents.
In order to solve this problem, we first take the method of manual pumping, that is, after the dumper completes the dumping operation of the train or trains, arrange the personnel to check. If there is air in the fuel tank, manual pumping is performed. The method is time-consuming and laborious, and it cannot guarantee safety. The phenomenon of fuel injection still occurs from time to time. Therefore, the design of the automatic evacuation system is as follows. The working principle is that when the oil level switch is turned on, air is present in the fuel tank, and a signal is sent. At this time, the vacuum pump starts to work, the air is extracted, the bladder in the fuel tank is inflated, the oil level is raised, and the oil level switch is closed. The vacuum pump stops working. If there is a fault, after the air is exhausted, the vacuum pump can not stop working and start pumping, the deflation valve will automatically close, and the pressure will be established in the oil circuit, the pressure switch will act, and a signal will be sent to stop the vacuum pump.
Due to the poor working environment of the dumper, the coal is dusty and needs to be sprinkled in the operation, so all the equipment must be sealed and installed in the box with the protection level of 66.
Through the above transformation, the problem of fuel injection of the dumper has been completely solved, and the safety hazards existing in the operation are eliminated.
Conclusion The vacuum pump is installed by adding a vacuum pump on the upper part of the hydraulic tank and using the signal given by the crude oil level sensor. Solved the problem of fuel injection in the hydraulic tank to eliminate safety hazards.
The bronze medal will be replaced by the Chinjin stainless steel brand. For a long time, the bronze medal has dominated the production of the metal signboard, but the high-speed electronic metal engraving machine developed by Shanghai Fudi Technology Co., Ltd. 021650866 will change this history. The machine can quickly engrave various cases and texts on any metal such as stainless steel titanium plate, gold, silver, copper, iron and tin. It rewrites the history of titanium stainless steel engraving. It engraves 40, 60, titanium gold or stainless steel silver 15 It can be engraved in minutes, the traditional process can not be compared with it, and the cost is lower than the laser engraving mechanical engraving acid etching. The overall cost of engraving titanium stainless steel is lower than that of bronze. Titanium stainless steel does not change color when exposed to outdoor sun and night, and the bronze will oxidize and discolor in less than one year. Therefore, the advent of the Fudi brand high-speed electronic metal engraving machine can make the titanium-gold stainless steel brand a substitute for the bronze medal.
Shanghai Fudi Technology Co., Ltd. Contact Zhang Zhongkuan Teacher Emailfiidikeji163.com Address 512, Tongzhou Building, No. 428, Guoding Road, Shanghai, East Gate of Fudan University
FAG Bearing
Does it look glossiness?Does it feel smooth?Does it make any noise?
A high quality Deep Groove Ball Bearing must be hypefine grinded with smooth surface, no burrs on the edges,running fast &noiseless, that is the feature of our products.
They have low friction and are optimized for low noise and low vibration which enables high rotational speeds.They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than other bearing
types.
1.Deep Groove Ball Bearing
2.Self-aligning Ball Bearing
3.Cylindrical Roller Bearing
4.Spherical Contact Bearing
5.Angular Contact Bearing
6.Tapered Roller Bearing
7.Thrust Ball Bearing
8.Insert Bearing
Fag Center Bearing,Fag High Temperature Bearing,FAG Deep Groove Ball Bearing,Fag Ball Bearing
Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com