A crusher is a machine called a crusher that can use external forces to deform the material and split into smaller particles. The current grinder has been widely used in various industries. Given that crusher is the basic processing technology in the production and application of traditional Chinese medicine, ultrafine crushing has attracted more and more attention. Although it is relatively late to start, there are relatively few developed varieties, but it has revealed its unique advantages and broad applications. prospect. Due to the different working principles of the crusher, the development of the crusher has also shown a diversified development. The increase in the types will inevitably lead to the emergence of various problems. Herein I will introduce the principles of several crushers that are more common in the market. How to solve the problem, as well as daily maintenance and other simple introduction!
There are many shredders on the market today. They can cut forage vines and tall stalks, and can smash sorghum and corn. They are commonly used in rural areas. With the extension of the use of the aircraft, the following failures often occur: When the smashing work is weak; does not start; no electricity. Under normal circumstances can repair themselves.
First, check whether the power outlet, plug, and power cord have any oxygen evolution or breakage. If not, plug in the power supply tester. When the motor is turned on without turning the motor, the light-toggle wheel can be turned by hand. One of the two startup capacitors of the aircraft is due to a capacity failure. In this case, generally only for new products. The other case is that the power is not rotating, and the application of external force can rotate but the motor emits a weak current noise, which is caused by the slight leakage of the starting capacitor. If the current noise is too large, the motor cannot be started at all and it is determined that the starting capacitor is short-circuited (the motor coil is short-circuited and requires professional repair). In the absence of a professional instrument, you can remove the capacitor (4UF/400V), insert the two leads into the zero- and live-line jacks of the mains, charge the capacitors, and then remove and short-circuit the two leads. If the discharge spark can be issued at this time and there is a loud "click" sound, indicating that the capacitor can be used; if the spark and the sound is weak, indicating that the capacity of the capacitor has decreased, need to be replaced or added a small capacitor. If the capacitor has been damaged short circuit can not use this method, and must be replaced with new products with the same specifications can be repaired. There is a small-scale high-speed crusher. The crusher's general quality is not easy to damage, and daily maintenance is more important. The following is the maintenance focus of this crusher. Check the bearing lubrication is good
Check that all fasteners are tight. Check if the drive belt is installed correctly and in good condition. If it is found that the belt is damaged, it should be replaced in time. When there is oil on the belt or sheave wheel, clean it with a clean rag. Check whether the protective device is good, and if it is found that the protective device is unsafe, it should be promptly removed. Check the damaged cavity for any material or other debris that should be removed if clean. Check whether the top of the hydraulic jacking machine or the top screw is retracted, and whether the gasket is properly installed and pressed.
The pulverizer is a kind of agricultural implement that is more commonly used. In the working process, the fan on the pulverizer has a very high rotational speed, and the working environment is harsh, and the closure is not strict. Sand and sand will cause serious wear to the wind, making the impeller and hub rivets. The head falls off and fatigue cracks appear at the rivet hole. How to repair the fan becomes a difficult problem. If the maintenance method is not proper, it will not only fail to achieve the purpose of repair, but also may cause the fan to be completely scrapped. This article describes a simple and practical maintenance method for reference.
The wind turbines are all subjected to dynamic balance tests. Because of their high rotational speed, the balancing requirements are also very high. Especially the impeller of the fan is very sensitive to imbalances in the periphery, but the requirements for the tiny imbalance in the heart are not Very high. According to this feature, the following methods can be used to repair an impeller-prone fault:
1. If the rivet head of the impeller is worn, the impeller body can be welded with the hub by electric welding, so that the worn rivet head returns to its original state.
2. If the rivet hole is prone to fatigue cracking, the whole new unused electrode may be used to repair the crack. However, the symmetry is performed centering on the axis of the impeller, and the remaining electrode of the crack is left behind in the weld. At that point, a new electrode is used to repair the crack in the rivet hole. After the welding, the remaining electrode is the same length as the remaining electrode during the repair of the symmetrical rivet to ensure that the weight of the welding repair is equal. If there is no crack at the symmetrical rivet hole, the electrode is also welded here to compensate for the new welding weight at the crack of the symmetrical rivet hole. Welding in accordance with this method of symmetrical reinforcement can repair cracks.
3. A simple dynamic balance test on the impeller is also very simple. The propeller is lifted and then hand-pushed to make it rotate gently. If the balance is not reached, it will stop at the lowest point and swing left and right. If there is bias, it can be spot welded on the opposite impeller, increase the weight to make it balanced, or use the angle grinder to grind away the weld mark of the biased impeller, which can also reach a balance, so that the fan can be repaired to work properly. Note that in the process of repairing the fan, it is not possible to use spot welding to weld the weld marks to the impeller so as not to affect the balance of the fan impeller, failing to achieve the purpose of repair and causing greater losses.
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