The advantages of a magnetic pump 1, because the drive shaft does not need to penetrate the pump housing, but the use of magnetic field through the air gap and isolation sets of thin-walled transmission torque, driven by the rotor, thus fundamentally eliminating the shaft seal leakage channel to achieve Completely sealed. 2, there is overload protection when power transmission. 3, in addition to magnetic materials and magnetic circuit design have higher requirements, the remaining part of the technical requirements are not high. 4, magnetic pump maintenance and repair workload is small. The disadvantage of two magnetic pumps 1 magnetic pump efficiency than ordinary centrifugal pump low. 2, on the prevention of single-sided leakage of materials and manufacturing requirements set higher. Such as improper choice of materials or manufacturing quality is poor, the isolation sleeve can not withstand the friction between the inner and outer magnets is easy to wear, and once broken, the media will be spilled. 3, due to the magnetic material pump and magnetic drive restrictions, so generally only for domestic delivery of 100 ℃ below, 1.6Mpa the following media. 4, the isolation sleeve material wear resistance is generally poor, so the magnetic pump is generally used for conveying medium without solid particles. 5, the coupling requirements of the high, right in the wrong, it will lead to the import of bearing damage and anti-single-sided leakage isolation sleeve wear. Third, the operating requirements of the magnetic pump 1, magnetic pump in normal operating conditions, there is no aging demagnetization over time. However, when the pump overload, stalling or operating temperature above the allowable temperature of magnet will demagnetization. The magnetic pump must therefore be operated under normal operating conditions. 2, the magnetic pump taboo empty run, in order to avoid the burning of the sliding bearing and isolation sleeve Magnetic pump is not allowed to contain the medium of ferromagnetic impurities and hard impurities. Magnetic pumps are not allowed to operate at less than 30% of rated flow. 3, the magnetic pump does not require any method of maintenance, but should always check the current, temperature and outlet pressure is normal, whether leakage operation, is stable, vibration and noise are normal. Under normal circumstances it is recommended to check 2 to 3 months. When necessary, should be checked at any time, found that anomalies in a timely manner.
Other Parts
The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:
(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.
(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.
(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.
(4) Single action structure is realized by two pairs of thrust bearings.
(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.
(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.
Other Parts,Spearhead Base,Compression Spin,Core Lifter
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