Common crusher repair and maintenance knowledge

First, the concept of grinder:

A crusher is a machine called a crusher that can use external force to deform the material and become a finer particle. 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 grinding has attracted more and more attention. Although the development started relatively late, there are relatively few varieties developed, but it shows unique advantages and broad application prospects. .

Second, the grinder repair and maintenance:

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 relatively common on the market. How to solve the problem, as well as daily maintenance and other simple introduction!

(I) Problems with the grinder:

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: 1, when the smashing work is weak; 2, does not start; no electricity.

(B), crusher maintenance: (under normal circumstances can repair themselves).

1, first check the power outlet, plug, power cord with or without oxygen off, broken place, if you can plug in the power test machine,

2. When the motor is turned on without turning, and when the light-pushing wheel can be turned by hand, it can be concluded that one of the two starting capacitors of the machine is out of capacity. In this case, generally only for new products.

3. In the other case, the power is not turned, the external force can be applied 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 professional equipment, 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 the short-circuit discharge. 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.

(C), small high-speed crusher maintenance:

Small high-speed crusher: The general quality of such crushers is not easy to damage, and daily maintenance is more important. The following is the focus of the maintenance of such small grinders.

1, check the bearing lubrication is good, check all fasteners are tight.

3, check the drive belt is installed correctly and in good condition, if it is found that the belt should be replaced in a timely manner, when there is oil on the belt or groove wheel, wipe clean with a clean rag.

4. Check whether the protective device is good. If it is found that the protective device is unsafe, it shall be promptly removed.

5, check the damaged cavity for any material or other debris, if it should be removed clean.

6. Check whether the top screw of the hydraulic jacking machine or the top screw is retracted, and whether the gasket is properly installed and pressed.

(D), crusher fan maintenance methods:

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 closed. The sand will cause serious wear to the wind and make the wheel body and the wheel rivets. The head falls off and fatigue cracks appear at the rivet hole. How to repair the fan becomes a thorny 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. 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 the impeller-prone faults:

Here's a simple and practical maintenance method for the crusher fan:

1. If the rivet head of the impeller is worn, it can be welded by pressing the impeller body and the hub, so that the worn rivet head can return to its original state.

2. If the rivet holes are prone to fatigue cracks, use the entire unused new welding rod to repair the cracks, but symmetrically proceed with the axis of the impeller as the center, and leave the rest of the weld at the crack. Here, a new welding rod is used to repair the crack in the corresponding rivet hole. After the welding, the rest of the welding electrode is the same length as the remaining welding 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 up and then moved by hand 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 and worked properly.

4, note that in the repair process of the fan can not use electric welding spot welding, welding marks left on the impeller, so as not to affect the fan impeller balance, reach the purpose of repair, causing greater losses.