齒輪計量泵在液壓控制技術中的應用及發(fā)展現(xiàn)狀
齒輪計量泵作為工業(yè)中的重要設備，在液壓傳動和控制技術中占有很大的比重。varem齒輪計量泵的主要特點是：結構簡單、體積小、重量輕、自吸性好、耐污染、使用可靠、壽命長、制造方便、維護方便、價格低廉。但漸開線齒輪計量泵也存在流量和困油引起的壓力脈動大、噪聲大、排量不可調、高溫效率低等缺點。這些缺點在一些結構改進的齒輪計量泵上得到了很大的改善。近年來，varem齒輪泵的工作壓力有了很大的提高，額定壓力可達25MPa，Z高壓可達31.5Mpa。另外，產品結構上也有很多改進，特別是varem三、四級齒輪泵的出現(xiàn)，在一定程度上彌補了齒輪泵不能可變的缺陷，而斜齒輪計量泵使介質的排量比更耐磨，復合齒輪泵的出現(xiàn)使泵的性能更優(yōu)齒輪泵的流量均勻性大大提高。它的應用領域也在不斷擴大，許多液壓設備已由原來的柱塞泵改為齒輪泵。由于市場競爭激烈，利潤呈現(xiàn)出被擠壓的形式。如何調整產業(yè)生態(tài)，讓占GDP比重過半的民營企業(yè)發(fā)揮應有的活力，成為一個重要課題。而且，人才問題也是一個共同的話題。高端人才和技術藍領的缺乏幾乎成了整個裝備制造業(yè)的難題。雖然機械類專業(yè)呈現(xiàn)出良好的招生和布局狀態(tài)，但與齒輪計量泵行業(yè)發(fā)展的人才缺口相比仍有較大差距。隨著齒輪計量泵向虛擬化、網絡化、智能化方向發(fā)展，將出現(xiàn)越來越多的交叉學科，這將對我國現(xiàn)有的行業(yè)人才培養(yǎng)模式形成巨大挑戰(zhàn)。最后是管理。這是一個普遍的概念。我們主要討論公司的管理制度。這并不是齒輪計量泵企業(yè)有的缺陷，民營企業(yè)或多或少存在著管理上的弊端。然而，作為一家高新技術企業(yè)，齒輪計量泵行業(yè)對管理者有著很高的要求。但是，我們可以看到，企業(yè)主大多是銷售人員，或技術人員等半途而廢的僧侶，缺乏企業(yè)管理意識。也有不少企業(yè)通過引進高級管理人才來彌補，有條件的企業(yè)選擇上市來對抗企業(yè)管理的現(xiàn)代化。很難確定哪種模式有效，但短期內解決管理問題的可能性很小。齒輪計量泵行業(yè)的發(fā)展可以說是機遇與挑戰(zhàn)并存。只有對癥下藥，乘勢而上，以市場為導向，抓住機遇，迎接挑戰(zhàn)，齒輪計量泵相關企業(yè)才能在激烈的競爭環(huán)境中占據(jù)一席之地。

As an important equipment in industry, gear metering pump occupies a large proportion in hydraulic transmission and control technology. The main features of varem gear metering pump are: simple structure, small volume, light weight, good self-priming, pollution resistance, reliable use, long service life, convenient manufacture, convenient maintenance and low price. But the involute gear metering pump also has some disadvantages, such as large pressure pulsation caused by flow and trapped oil, large noise, non adjustable displacement, low high temperature efficiency and so on. These shortcomings have been greatly improved in some gear metering pumps with improved structure. In recent years, the working pressure of varem gear pump has been greatly improved, the rated pressure can reach 25MPa, Z high pressure can reach 31.5Mpa. In addition, there are many improvements in the product structure, especially the appearance of varem three-stage and four stage gear pump, which makes up for the defect that the gear pump can not be changed to a certain extent, while the helical gear metering pump makes the displacement ratio of medium more wear-resistant, the appearance of compound gear pump makes the performance of the pump better, and the flow uniformity of the gear pump is greatly improved. Its application field is also expanding, many hydraulic equipment has been changed from the original piston pump to gear pump. Due to the fierce competition in the market, the profit is squeezed. How to adjust the industrial ecology and let the private enterprises, which account for more than half of GDP, play their due vitality, has become an important issue. Moreover, the issue of talents is also a common topic. The lack of high-end talents and technical blue collar has almost become a problem for the whole equipment manufacturing industry. Although the mechanical specialty presents a good enrollment and layout, there is still a big gap compared with the talent gap of gear metering pump industry. With the development of gear metering pump in the direction of virtualization, networking and intelligence, there will be more and more interdisciplinary, which will pose a great challenge to the existing industry talent training mode in China. Finally, management. This is a universal concept. We mainly discuss the management system of the company. This is not the defect of gear metering pump enterprises, private enterprises have more or less management shortcomings. However, as a high-tech enterprise, gear metering pump industry has high requirements for managers. However, we can see that most of the business owners are monks who give up halfway, such as salesmen or technicians, and lack the awareness of enterprise management. There are also many enterprises to make up for it by introducing senior management talents. Conditional enterprises choose to go public to fight against the modernization of enterprise management. It is difficult to determine which model is effective, but the possibility of solving management problems in the short term is very small. The development of gear metering pump industry can be said that opportunities and challenges coexist. Only by taking advantage of the situation, taking the market as the guide, seizing the opportunity and meeting the challenge, can the gear metering pump related enterprises occupy a place in the fierce competition environment.