為什么山東清越螺桿鼓風(fēng)機的機頭更大些？

前不久，螺桿風(fēng)機廠(chǎng)家清越的一家客戶(hù)在安裝調試螺桿鼓風(fēng)機的過(guò)程中，發(fā)現同樣功率的螺桿鼓風(fēng)機，清越的設備機頭比另一的卻要大上很多，因此就引出了標題中的疑問(wèn)，這是為何呢？

Not long ago, a customer of Qingyue, a screw blower manufacturer, found that the head of Qingyue's screw blower with the same power was much larger than that of another brand in the process of installing and debugging the screw blower. Therefore, the question in the title was raised. Why?

螺桿風(fēng)機廠(chǎng)家簡(jiǎn)單來(lái)解釋一下。我們知道螺桿鼓風(fēng)機等容積式鼓風(fēng)機種類(lèi)較多，不管具體的哪種類(lèi)型，它們都是通過(guò)工作腔容積的周期性變化而實(shí)現空氣輸送的。在設備選擇中，風(fēng)量是其中基本的參數之一。那不同的機型，一定壓力下不同風(fēng)量的大小是如何實(shí)現的呢？

Screw fan manufacturers to explain briefly. We know that there are many types of positive displacement blowers, such as screw blower. No matter which type is specific, they all realize air delivery through the periodic change of working chamber volume. In equipment selection, air volume is one of the basic parameters. How to achieve different air volume under certain pressure for different models?以螺桿風(fēng)機廠(chǎng)家的螺桿鼓風(fēng)機產(chǎn)品為例，風(fēng)量基礎的影響因素就是轉子與轉子以及腔體圍合形成工作腔體容積與轉速。這個(gè)工作腔體容積決定了鼓風(fēng)機轉子一個(gè)周期傳輸的氣體量有多少。轉速就更容易理解了，決定了單位時(shí)間內轉子能完成多少個(gè)周期性變化。因此不考慮泄漏等影響因素，工作腔容積增加以及轉速的提高都能有用提高設備風(fēng)量。Taking the screw blower products of screw blower manufacturers as an example, the influencing factors of air volume basis are the volume and speed of working cavity formed by rotor and rotor and cavity enclosure. The volume of the working cavity determines how much gas the blower rotor transmits in one cycle. The speed is easier to understand, which determines how many periodic changes the rotor can complete in unit time. Therefore, regardless of the influence factors such as leakage, the increase of working chamber volume and rotating speed can effectively improve the air volume of the equipment.

實(shí)際應用中，螺桿鼓風(fēng)機工作腔的容積一方面與型線(xiàn)有關(guān)，另一方面與轉子與腔體的幾何大小有關(guān)。型線(xiàn)以及轉速一定的前提下，要提高風(fēng)量就需要增加轉子與腔體的體積，這其中就涉及設備體積與各方面成本的增加。而通過(guò)轉速來(lái)增加風(fēng)量更為便捷，但涉及到軸承的承受能力、密封等問(wèn)題。轉速越高軸承磨損越嚴重、密封更容易泄漏，需要妥善應對。

In practical application, the volume of the working cavity of screw blower is related to the profile on the one hand, and the geometric size of rotor and cavity on the other. Under the premise of a certain profile and speed, to improve the air volume, it is necessary to increase the volume of rotor and cavity, which involves the increase of equipment volume and various costs. It is more convenient to increase air volume by rotating speed, but it involves bearing capacity, sealing and other issues. The higher the rotating speed is, the more serious the bearing wear is, and the seal is more likely to leak, which needs to be dealt with properly.

另外就是通過(guò)高速轉動(dòng)來(lái)增大風(fēng)量還會(huì )使鼓風(fēng)機出口的空氣流速加大，帶來(lái)額外的噪音問(wèn)題以及壓損，以及高轉速離心力帶來(lái)動(dòng)平衡、磨損等問(wèn)題，維護需要更為細致。

In addition, increasing the air volume through high-speed rotation will also increase the air flow rate at the outlet of the blower, resulting in additional noise problems and pressure loss, as well as dynamic balance, wear and other problems caused by high-speed centrifugal force, so the maintenance needs to be more meticulous.

在這個(gè)方面采取的就是大機頭、低轉速的路線(xiàn)，以保證穩定的產(chǎn)品性能。不同的企業(yè)選擇的方向也會(huì )不同。落實(shí)到具體產(chǎn)品上，差不多的風(fēng)量，山東螺桿鼓風(fēng)機相對于一些小機頭、高轉速的產(chǎn)品，螺桿主機在體積上自然就會(huì )大出很多，但轉速也會(huì )相應較低。

In this respect, we adopt the route of large nose and low speed to ensure stable product performance. Different enterprises will choose different directions. When it comes to specific products, with almost the same air volume, compared with some products with small head and high speed, the screw host will naturally be much larger in volume, but the speed will also be relatively low.