With the country's increased investment in engineering construction, the Dongfeng concrete machinery market with the help of urbanization has also developed rapidly as never before. As an indispensable artifact in the concrete industry, concrete delivery pumps play a huge role in the process of concrete construction. The domestic fully hydraulic reciprocating piston concrete pump has experienced a development process from scratch, from weak to strong. With the heating up of the market, concrete pump manufacturers continue to emerge, and there are more and more concrete pump products of different manufacturers and models. In the face of the dazzling concrete pump product market, Zhengzhou Far East Machinery will help you analyze the main components of the concrete pump, so as to identify the advantages and disadvantages in the purchase process.
Hydraulic pump---Hydraulic pump is the "heart" of concrete conveying pump. According to different origins, there are domestic hydraulic pumps and imported hydraulic pumps; according to the structure of hydraulic pumps, there are gear pumps, vane pumps, and plunger pumps. The same type of hydraulic pump is suitable for different pressure levels. Due to its low cost and strong adaptability, gear pumps were widely used in concrete delivery pumps in the initial stage, but because of their small pressure bearing and large pulse resistance, they are usually configured on low-pressure pumps, or only used in auxiliary oil circuits of medium and high-pressure pumps. System; plunger pump is divided into swash plate type and oblique shaft type, because of its wide pressure range and reliable performance. Imported hydraulic pumps, such as A4VG, A10VG, A11VG series products of German Rexroth Company, are the world's outstanding products. Among the domestic inclined axis plunger pumps, the A7V and A8V series products represented by Guiyang Liyuan Hydraulic are the best products of domestic plunger pumps, and the quality is relatively reliable. Therefore, from the grade of the hydraulic pump, you can peep at the performance of a concrete pump.
Hydraulic valve---hydraulic valve is the "assistant" of hydraulic pump, including sequence valve, pressure reducing valve, reversing valve, unloading valve, one-way valve and switching valve, etc. Domestic reversing valves and unloading valves are better than those from Shanghai Lixin and Beijing Huade, but for valves with high technical difficulty and high reliability requirements, such as sequence valves and pressure reducing valves, German Harvey and Rexroth are selected. , American Vickers and other world-renowned brands are better, so that the performance of the concrete pump can be reliably guaranteed. If a hydraulic valve block fails, it will affect the work of the whole machine; therefore, when purchasing a concrete delivery pump, not only the "heart" but also its "assistant" should be considered to achieve the best configuration.
Electrical components---The electrical components on the concrete pump include contactors, circuit breakers, relays, etc., which control the work of related components according to logic programs. Although domestic electrical components have an advantage in price, there is still a gap between the reliability and life of components from imported or joint venture brands. For example, contactors from Schneider in France, circuit breakers from Siemens in Germany, and small relays from Omron in Japan are all outstanding among similar products. In order to reduce the failure caused by many electrical contacts, some manufacturers such as Zhonglian, Sany, and Pump Tiger have successively applied PLC (programmable controller) to the concrete delivery pump, so as to reduce the mechanical contacts of the electrical system to low degree. The application of PLC realizes non-contact program control, and it is convenient to realize automatic remote control. The fault detection program is written with a microcomputer, and the cause of the fault is displayed, which is convenient for the operation and maintenance of the system.
When purchasing a concrete pump, it is not only necessary to choose the brand, performance, and grade of components, but also the technical strength and production history of the manufacturer, but also the level of after-sales service, that is, the cost-effectiveness of the product. Formal enterprises have a good performance in R&D strength, quality assurance, after-sales service and spare parts supply, which can relieve users from worries.
Zhengzhou Yuandong Machinery Manufacturing Co., Ltd. is a manufacturer integrating R&D, manufacturing and sales of concrete mixing equipment. Yuandong Machinery Co., Ltd. has strong R&D, sincere service and advanced technical service guarantee, which is really the choice of buyers!
