The frequency of vibration exciter was determined by the rotary speed and the number of grooves distributed on a spool land.
为了提高电液激振器的频率，提出一种采用2D阀控制液压缸实现激振的新方案。
Third, any direct attempts to prevent poor performance valve stroke, rotary valve attempts to prevent the good performance Straight trip throttle valve spool is vertical, while the medium is the level of flow into the outflow valve chamber flow inevitably turn back street, so that the valve flow path becomes quite complex (such as the inverted S-shape).
三、什么直行程调节阀防堵性能差，旋塞阀角行程阀防堵性能好直行程阀阀芯是垂直节流，而介质是水平流进流出，阀腔内流道必然转弯倒拐，使阀的流路变得相当复杂。
Third, any direct attempts to prevent poor performance valve stroke adjustment, rotary valve attempts to prevent the good performance Straight trip throttle valve spool is vertical, while the medium is the level of flow into the outflow valve cavity flow must turn back street, so that the valve flow path becomes quite complex (such as the inverted S-shape).
三、什么直行程调节阀防堵性能差，角行程阀防堵性能好直行程阀阀芯是垂直节流，而介质是水平流进流出，铜阀门阀腔内流道必然转弯倒拐，使阀的流路变得相当复杂。
The utility model is characterized in that: clamp mouth rotary device is arranged at the back end of the clamp mouth, and touch rod is arranged at the right ahead of the push rod; spool core is arranged at the back of the clamp mouth for the folding device of the clamp mouth, a shifting fork is arranged at one side of the spool core, one end of the shifting fork is connected with spool core, and the other end is connected with cams; swivel link is arranged at the back of the spool core for the clamp mouth rotary device, and the swivel link is connected with cams.
该实用新型的特点是在说：钳嘴旋转装置被安排在后端的钳嘴，和触摸杆被安排在右走在推杆；阀芯核心是安排在后面的钳嘴为折叠装置的钳嘴，拨叉被安排在一边的阀芯核心，另一端的拨叉是与阀芯为核心的，另一端连接凸轮；转体环线是安排在后面的阀芯核心，为钳嘴旋转装置，以及可旋转环线是连接摄影机。
Two features of the eccentric rotary valve to improve its adjustable range, the first of its hole plate design, eccentricity is an effective 1/4 of the park, eccentric valve core is a V-type, whereas the traditional spool is a garden shaped, when the eccentric rotary valve is closed when it makes a small V-formation at low flow very precise control of large flows, which are almost the valve opens to almost the same diameter pipe.
偏心旋转阀的两个特点提高了它的可调范围，第一个是其孔板式的设计，偏心是一个有效的1/4的园，偏心阀芯是V型的，而传统的阀芯是园形的，当偏心旋转阀是关的时候，它的小的V型使得在低流量时形成非常精确的控制，对大流量，它几乎将阀门打开到几乎与管道的直径相同。
Through valve, angular valve, sleeve valve is linear displacement valve, also known as sliding stem valve o butterfly, eccentric rotary valve, ball valve and so on are angular displacement, also known as the rotary valve (Ro-taryValve) o There are some manufacturers in recent years launched a mobile seat control valve, which match with the rotary actuator, but the relative displacement of the spool of view, is still linear displacement, such as Nufflo control valve.
直通阀、角形阀、套筒阀等属于直线位移阀，也称为滑动阀杆阀o蝶阀、偏心旋转阀、球阀等属于角位移阀，也称为旋转阀(Ro-taryValve)o近年也有一些制造·厂商推出了移动阀座的控制阀，它与角行程执行机构配合，但从阀芯的相对位移看，仍是直线位移，例如Nufflo控制阀。
In order to conveniently control the speed of hydraulic press whose distributor spools are driven by cam mechanism, a linear relationship between the open gap of spool and cam rotary angle was put forward.
为方便控制由凸轮驱动分配阀芯的液压机速度，提出一种阀芯开启度与凸轮转角成线性关系的凸轮升程曲线，导出凸轮升程曲线方程及其压力角的数学模型。
The rotary motion of the spool is driven by a stepper motor;
阀芯的旋转由步进电机驱动；
Through stress analysis of the rotary valve spool, the formation mechanism and calculation methods of hydrodynamic torque and viscous friction torque were studied.
通过对转阀阀芯的受力情况进行分析，研究了阀芯旋转式四通高速换向阀阀芯的液动力矩和粘性摩擦力矩的生成机理和计算方法。
The digital servo valve is composed of 2 - stage pneumatic servo valve developed with rotary and linear motions of a single spool, and stepper motor under continual control.
2D气动数字伺服阀由阀芯双自由度设计的两级气动伺服阀和连续跟踪控制的步进电动机作为电&机械的接口两部分构成。