喷头

An aerosol spray device which is capable of imparting a unipolar charge by double layer charging and charge separation to liquid droplets of a composition sprayed therefrom has a spraying head in the form of an insert in an actuator, the spraying head having a bore through which liquid is expelled having an outlet, preferably with a tortuous periphery, having an L/a ratio of at least 8 (preferably at least 10) where L is the length of the periphery defining the bore outlet in mm and a is the cross-sectional area of the bore outlet in mm2 and the apparatus being constructed such that the droplets are expelled from the spraying head at a flow ratio of at least 0.4 (preferably at least 0.5) grams per second and have a charge to mass ratio of at least +/-1x10-4 C/kg.

本发明还提供了一种喷射装置，它能够通过双层充电和电荷分离而向要喷出的组合物液滴施加单一极性的电荷，该喷射装置具有一个喷头，该喷头制成为致动器中的插入件的形式，喷头具有一个孔腔，液体能够通过该孔腔从装置中排出，该孔腔具有一出口，该出口最好具有曲线周边，并且L/a比率至少为8，其中L是以mm为单位的确定孔腔出口的周长，a是以mm2为单位的孔腔出口的横截面积，该装置构造成使得液滴在至少每秒0.5克的流动速率以及具有至少＋／－1×100C/kg的电荷／质量比的状态下从喷头排出。

Mathematical model for the inner flow of complete fluidic sprinkler was established by using computational fluid dynamics.

建立了全射流喷头内部流场的CFD数值模型，并对喷头的流量压力关系、喷头附壁情况下附壁点的位置进行了数值模拟计算。

A device and method for preparing compound nano fiber endless tow, which contains feeding material liquid to pair of electric spinning nozzle on frame, each nozzle respectively applied with high dc voltage with opposite polarity, each pair of nozzle jetting out nano fiber with opposite electric charge, said nano fiber attracting and colliding each other to form compound nano fiber, then forming nano fiber endless tow after drawing and stretching, the first opposite set pair of electric spinning nozzle jetted compound nano fiber endless tow is stretched down and used as acceptor which covered by the nano fiber jetted by second pair of nozzle an d forming two layers of compound nano fiber endless tow after drawing and stretching, in turn to get multilayer compound nano fiber endless tow after drawing and stretching by godet roller.

复合纳米纤维长丝束制备装置及其制备方法是一种简单、高效电纺制备纳米纤维长丝束的方法，其步骤为将料液输送给支架(3)上的电纺喷头对(1)；喷口相向的电纺喷头对(1)的每个喷头分别施加相反极性的直流高电压；每对相向喷口喷出分别带相反电荷的纳米纤维，并在空中相互吸引、碰撞形成复合纳米纤维，经牵引、拉伸后形成复合纳米纤维长丝束；第一对相向放置的电纺喷头纺丝形成的复合纳米纤维长丝束向下拉伸，并作为接受体与第二对电纺喷头喷出的分别带相反电荷并相互吸引的纳米纤维在空中相遇，被第二对电纺喷头喷出的纳米纤维包裹，经牵引、拉伸后形成两层复合纳米纤维长丝束；依次类推，最后经导丝辊对(2)牵引、拉伸后得到多层复合纳米纤维长丝束。

The earliest rotors were impact types, and Rainbird was one of the earliest sprinkler companies.

最早的旋转式喷头是压力喷头，雨鸟就是最早的喷头公司之一。

In this paper, hydraulic performance tests on two sprinklers under different conditions are conducted. The two sprinklers are widely used for gardens irrigation in China, named model R50 of Rainbird Company and model PGP of Hunter company. On account of the sprinkler's structure, preliminary analysis on the tested data is also made. Based on the tested data, some advice on the best choice and layout of the sprinkler in irrigation design is presented.

文中对国内目前应用最多的两种园林灌溉喷头——美国Rainbird公司的R50型及Hunter公司的PGP型喷头作了不同工况下的水力性能测试，并结合喷头的结构对测试数据进行初步分析；在水力性能测试结果的基础上，对园林灌溉系统设计中喷头的合理选用与布置提出了几点建议。

EpS0N of nozzle is a high-precision nozzle Xaar and Spectra of the sprinkler head nozzle is low precision.

EpS0N的喷头属于高精度喷头Xaar及Spectra的喷头属于低精度喷头。

One straight line guide and silk pole flat network of transmission gush out black to make network device, by the shower nozzle (2), shower nozzle shelf (1), air cylinder (7), straight line guide (8),(6) of bases, and ball silk (10) of poles and not urge at (4) of mesas job, its characterisitic is that: The stated shower nozzle shelf (1) one both ends and locate a base (11) bottom air cylinder of shower nozzle in the guide (8) connecting rod slipping of the straight line from head to foot through one, make up and lift the organization pneumatically; And this shower nozzle sets of (11) base underpart set up one group along base (6) longitudinal straight line guide (5) package that arrange again, two straight line guide packages (5)Middle shower nozzle sets of (11) base of position department set up, link with this shower nozzle of a base (11)s, and can promote their longitudinal time move the ball silk pole worked up along (6) base; The end head of this ball silk pole (10) is connecting the electrical machinery (9) of urging.

一种直线导轨和丝杆传动的平网喷墨制网装置，由喷头(2)、喷头架(1)、气缸(7)、直线导轨(8)、基座(6)、工作台面(4)及滚珠丝杆(10)和驱动电机(9)组成，其特征在于：所述喷头架(1)的两端通过一能在直线导轨(8)内上下滑动的连杆与设于喷头架底座(11)下部的气缸(7)相连，组成气动抬升机构；而该喷头架底座(11)下部又设置着一组沿基座(6)纵向排布的直线导轨组件(5)，两直线导轨组件(5)中间部位的喷头架底座(11)部设置着与该喷头架底座(11)相连、并能推动其沿基座(6)纵向来回位移动的滚珠丝杆(10)；该滚珠丝杆(10)的端头连接着驱动电机(9)。

One straight line guide and silk pole flat network of transmission gush out black to make network device, by shower nozzle, shower nozzle shelf, air cylinder, person who lead sharply, base, job mesa and electrical machinery, pole of silk and pole of silk make up, its characterisitic is that: Both ends, with locating an air cylinder of bottom base of shower nozzle to be linked to through a connecting rod of the stated shower nozzle shelf, make up and lift the organization pneumatically; And this shower nozzle sets of base underpart set up first group along the longitudinal straight line guide package that arranged of the base again, two straight line guide package shower nozzle sets of base department of position set up and link with this shower nozzle of a bases, and can promote its ball silk pole moved along longitudinal time of the base; The end head of this ball silk pole is connecting the electrical machinery of urging.

一种直线导轨和丝杆传动的平网喷墨制网装置，由喷头、喷头架、气缸、直线导机、基座、工作台面及丝杆和丝杆电机组成，其特征在于：所述喷头架的两端通过一连杆与设于喷头架底座下部的气缸相连，组成气动抬升机构；而该喷头架底座下部又设置着一组沿基座纵向排布的直线导轨组件，两直线导轨组件中间部位的喷头架底座部设置与该喷头架底座相连，并能推动其沿基座纵向来回移动的滚珠丝杆；该滚珠丝杆的端头连接着驱动电机。

When covering the cap of perfume sprayers , air flowability around the spray-head will become quite low and the possibility to volatilize is small, so we don't need to worry that perfume will go away through spray-heads of sprayers .

在香水喷雾器的外盖盖上并包围住喷头之后，喷头周边的空气流动性就会变得更低，挥发的可能性是很小的，所以无需太担心香水会通过喷雾器喷头而挥发的问题。

In addition, the nozzle structure is complex and there are some parts of the factory of the nozzle is sealed with adhesive, glue is organic, most of the glue is impatient keto esters and organic solvents, alcohols, of course, including the nozzles on the sealant.

另外，喷头的结构很复杂，出厂的喷头有一些部位是用胶粘剂密封的，胶是有机物，大部分的胶是不耐酮酯醇类有机溶剂的，当然也包括喷头上的密封胶。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。