The hydraulic valve of Manifold Block hydraulic system is chosen as six-vein Excalibrate
For any hydraulic system, the correct selection of hydraulic valve, will make the hydraulic system design is reasonable, good performance, easy installation, easy maintenance, and ensure the normal operation of the system is an important condition. Shandong hydraulic valve manufacturers describe how to rationally choose hydraulic valves as follows:
1. The general principle of selection firstly determines the type of hydraulic valve according to the functional requirements of the system.
Try to choose a standard range of generic products. According to the actual installation, choose a different connection mode, such as pipe or plate connection. Then, the rated pressure of the hydraulic valve is selected according to the highest working pressure designed by the system, and the flow specification of the hydraulic valve is selected according to the maximum flow through the hydraulic valve. Such as the relief valve should be selected according to the maximum flow of the hydraulic pump; The flow valve should be selected according to the loop control flow range, the minimum stable flow should be less than the minimum stable flow required by the speed range. Manifold Block hydraulic valve
2. Selection of installation method of Manifold Block hydraulic valve
The installation of hydraulic valve has a decisive impact on the structure of the hydraulic device, so it is necessary to choose the appropriate installation according to the specific situation. Generally speaking, in the selection of hydraulic valve installation mode, should be based on the size of the selected hydraulic valve specifications, the complexity of the system and layout characteristics to determine. The above – introduced several installation methods, each has its own characteristics. Threaded connection type, suitable for simple system, fewer components, the installation position is more spacious occasions. Plate type, suitable for complex system, a large number of components, installation position is relatively compact occasions. The connecting plate can be drilled to communicate the oil route. Multiple hydraulic components are installed on the connecting plate, which can reduce the connection pipe between the hydraulic valves and reduce the leakage point, making the installation and maintenance more convenient. Flanged connection type is generally used for large diameter valves.
3. Selection of rated pressure of Manifold Block hydraulic valve
The rated pressure of the hydraulic valve is the basic performance parameters of the hydraulic valve, marking the size of the hydraulic valve bearing capacity, refers to the nominal pressure of the hydraulic valve in the rated working state. Manifold Block hydraulic valve
The rated pressure of the hydraulic valve should be selected according to the working pressure of the hydraulic system design. In general, the rated pressure value marked on the hydraulic valve should be appropriately greater than the working pressure of the system.
4. Selection of Manifold Block hydraulic valve flow specifications
The rated flow of the hydraulic valve is the nominal flow of the hydraulic valve in the rated working condition. The actual working flow of the hydraulic valve is related to the connection mode of the oil circuit in the system: the flow rate of the series circuit is equal to the sum of the flow rate of the oil circuit. When selecting the hydraulic valve flow specifications, if the rated flow of the valve and the working flow of the system are close, it is obviously the most economic. If the rated flow of the selection valve is smaller than the working flow, it is easy to cause hydraulic clamping and hydraulic power, and may have a bad impact on the quality of the valve. In addition, it is not simply according to the rated output flow of the hydraulic pump to choose the valve flow, because for a hydraulic system, the flow through each loop is not the same. Therefore, in the selection, should consider the hydraulic valve in the loop through the maximum flow. For example, if the differential hydraulic cylinder is used in the first circuit, when the hydraulic cylinder reversing action, the flow rate discharged by the rodless cavity is much larger than the flow rate discharged by the rod cavity, and may even exceed the maximum flow rate of the hydraulic pump output. When choosing the reversing valve, this should be taken into account to achieve a reasonable match. For example, some flow through a relatively large circuit, if the selection of the flow of the same specifications of the reversing valve, in the reversing action may produce a large hydraulic impact. In order to improve the working performance, can choose large gear specification of the reversing valve. Manifold Block hydraulic valve
5. Selection of Manifold Block hydraulic valve control mode
There are a variety of control modes of hydraulic valves, which are generally selected according to the control needs of the system and the configuration capacity of the electrical system. For the hydraulic system with low automation requirements, small or infrequently adjusted, manual control mode can be selected; For higher automation or control performance requirements of the hydraulic system can choose electric, hydraulic and other ways.
6. Financial choices
When choosing the hydraulic valve, should meet the requirements of the work, as far as possible to choose the cost and cost of the lower hydraulic valve, in order to improve the economic indicators of the host. For example, for systems with low speed stability requirements, throttle valves should be selected instead of speed control valves. In addition, when choosing hydraulic valves, do not blindly choose cheaper valves, to consider the reliability and working life of its work, that is, to consider the comprehensive cost. At the same time, the convenience and rapidity of maintenance should also be considered, so as not to affect production.