螺桿泵的管理
Screw Management
1 起動
A start
螺桿泵應(yīng)在吸排停止閥全開的情況下起動，以防過載或吸空。
Screw pump suction stop valve should be fully open the case of start, to prevent overload or suck air.
螺桿泵雖然具有干吸能力，但是必須防止干轉(zhuǎn)，以免擦傷工作表面。
Screw while having dry absorption capacity, but it must be to prevent the stem turn, so as not to scratch the surface of the work.
假如泵需要在油溫很低或粘度很高的情況下起動，應(yīng)在吸排閥和旁通閥全開的情況下起動，讓泵起動時的負荷低，直到原動機達到額定轉(zhuǎn)速時，再將旁通閥逐漸關(guān)閉。
If the pump requires oil temperature is low or very high viscosity of the case of start, should be suction valve and bypass valve fully open the case of starting, so that the minimum load when the pumps start until the prime mover to achieve rated speed, the re - bypass valve will gradually close.
當(dāng)旁通閥開啟時，液體是在有節(jié)流的情況下在泵中不斷循環(huán)流動的，而循環(huán)的油量越多，循環(huán)的時間越長，液體的發(fā)熱也就越嚴重，甚至使泵因高溫變形而損壞，必須引起注意。
When the bypass valve is opened, the liquid is in a case of cutting expenditure in the pump constantly circulating, while the fuel cycle more the longer the cycle, the liquid heating is also more serious, and even the pump because of high-temperature deformation and damage, requires attention.
2 運轉(zhuǎn)
2 running
螺桿泵必須按既定的方向運轉(zhuǎn)，以產(chǎn)生一定的吸排。
Screw must be in accordance with established direction of operation, to generate a certain degree of suction.
泵工作時，應(yīng)注意檢查壓力、溫度和機械軸封的工作。對軸封應(yīng)該允許有微量的泄漏，如泄漏量不超過20-30秒/滴，則認為正常。假如泵在工作時產(chǎn)生噪音，這往往是因油溫太低，油液粘度太高，油液中進入空氣，聯(lián)軸節(jié)失中或泵過度磨損等原因引起。
Pumps work, should pay attention to check the pressure, temperature and mechanical seals work. On the seal should be allowed to have trace amounts of leakage, such as the leakage rate of no more than 20-30 seconds / drop is considered to be normal. If the pump noise at work, this is often due to low oil temperature, oil viscosity is too high, the oil into the air, or pump coupling loss causes such as excessive wear and tear.
3 停車
3 Parking
泵停車時，應(yīng)先關(guān)閉排出停止閥，并待泵完全停轉(zhuǎn)后關(guān)閉吸入停止閥。
Pump stop, they would first close the discharge stop valve, and switch to a complete halt until pump suction stop valve was closed.
4 螺桿泵因工作螺桿長度較大，剛性較差，容易引起彎曲，造成工作失常。對軸系的連接必須很好對中；對中工作好是在安裝定位后進行，以免管路牽連造成變形；連接管路時應(yīng)獨立固定，盡可能減少對泵的牽連等。此外，備用螺桿，在保存時好采用懸吊固定的方法，避免因放置不平而造成的變形公元前三世紀(jì)，阿基米德發(fā)明的螺旋桿，可以平穩(wěn)連續(xù)地將水提至幾米高處，其原理仍為現(xiàn)代螺桿泵所利用。
4 screw length of the screw because of work large, less rigid, easily lead to bend, resulting in the work of disorders. The connection of the shaft must be a very good pair; right to work is best conducted after the installation position to avoid distortion caused by pipeline involved; connecting pipe should be independently fixed, as far as possible and so reduce the pump implicated. In addition, spare screw, when you save the best method of using a fixed suspension to avoid distortion caused by uneven placing the third century BC, Archimedes invented the screw rod can be smooth continuously raised to the water several meters high Department, its principle is still used by modern pumps.
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