本技术资料为新乡市大汉振动机械有限公司原创技术性资料,只可用于学术研究, 引用请注明出处,用于商业用途将追究法律责任
超声波试验筛　　1. 产品概述：
　　超声波试验筛是大汉公司工程师在dh-300t标准试验筛的基础上研发的高科技微细粉分级设备,是当前实验室在做微细粉分样筛选时网孔堵塞的最有效的解决仪器。可广泛应用于制药、冶金、化工、选矿、食品等行业的实验室,具有筛分过滤精度高、网孔不堵塞等特点，真正解决了因团聚、静电、强吸附性卡堵网孔等实验室筛分难题，是国内筛分行业的一项重大技术突破。
　　2. 结构部件：
　　a:标准试验筛(主机)—dh-300试验筛是一种可定时自动关机，保证试验重复性，功能全面操作简单的粒度分析仪器。可将一种颗粒料同时精密分出2~8个粒子段。可用于浆液料的细度及杂物含量分析。
　　b:超声波振动电源—内置微电脑芯片，可根据超声波的不同状态进行全程数字频率自动跟踪，操作简单方便，长时间工作振荡器发热量低，工作状态稳定。
　　c:t200型试验筛框—在国标φ 200筛框上装置有超声波振荡器。
　　d:高频连接线—t200型试验筛框与超声波振动电源之间采用电缆连接。
　　e:连接器—航空连接插件。
　　f:振荡器—高性能超声波转换器件。
　　3. 基本工作原理：
　　超声波试验筛由超声波振动电源、dh-300试验筛(主机)、t200型试验筛框,高频连接线、连接器组成。超声波振动电源产生的高频电振荡由振荡器转换成高频正弦形式的振荡波，振荡器将振荡波均匀传输至筛面。筛网上的物料在做低频三次元振动的同时，叠加上超声波振动，既可防止网孔堵塞，又可提高筛分产量和质量。
　　4. 一般技术数据：
　　超声波振动电源：
　　4.1 电源输入： 交流220v±10%
　　4.2 整机电流： ≤0.6a
　　4.3 高频电流： ≤0.5a
　　4.4 工作频率： 30khz
　　4.5 工作模式： 连续、 脉冲
　　4.6 环境温度： -10~40℃
　　dh-300试验筛(主机):|
　　名称
　　 单位
　　 参数
　　
筛框
　　 层
　　 1~8
　　
筛框直径
　　 mm
　　 φ200 φ100 φ75
　　
筛分粒度
　　 mm
　　 0.025~3
　　
噪音
　　 db
　　 小于50
　　
振幅
　　 mm
　　 0~3
　　
振动频率
　　 次/分
　　 1400
　　
外形尺寸
　　 长宽高
　　 360：300：370+n*50
　　
电源
　　 v；hz
　　 220；50
　　
整机重量
　　 kg
　　 36 (不含筛框)
　　

　　5. 使用说明：
　　5.1 关于供电： 超声波控制系统与试验筛分别供电，试验筛与超声波电源均为单相供电。
　　5.2主机与超声波振动电源的连接：将t200型试验筛框中的振荡器的连接线上的插头插入超声波振动电源后面的插座，打开电源超声波振动电源开始工作，根据筛分需要调节功率旋钮。
　　5.3 dh-300试验筛的操作：首先将t200型试验筛框放置试验筛托盘上调节夹具高度，拧紧m12与m8螺母，然后将电源线插头插入220v插座，根据测试要求调节时间计时器，打开开关试验筛开始工作，时间计时器倒计时归零时主机自动关闭。
　　6、超声波振动电源特性：
　　6.1 独有无缝续流电路，性能更卓越。(此为我公司在国内同行独一无二的最新技术)
　　6.2 真正的频率自动追踪功能：自动追踪输出电感和振头谐振频率，振动效果不会随温度,湿度，振子老化以及使用时间等条件的变化而变化，使振动效果一直保持在最高水平，频率偏差仅为0.1‰,转换效率≥92% 。
　　6.3 输出电流为纯正旋波，可以延长振子及信号发生器本身的寿命。
　　6.4自动扫频功能：扫频频率从10hz-2khz可调，扫频功率从10%-100%，使振动效果更佳。（可产生变化的多次谐波）
　　6.5 输出电流纹波 ≤1%,使振动效果更稳定,可良好的保护振子不受损坏。
　　6.6 采用闭环控制，输出电流更稳定,使电流不会随输入电压、振子老化等条件变化而变化,可持久保持功率强劲。（市场上的产品多为开环电路控制,就是说只看到前端的电流,前后不能很好的沟通,造成前后不一）
　　6.7 输入功率可调。
　　6.8 输入电流显示,频率追踪指示,过温度指示,输出短路指示,振头失效指示.可更为直观的了解其工作状态(智能型设备)。
　　6.9 保护功能：过功率保护,过电流保护,过电压保护,欠压保护,频率追踪失效保护,过温度保护，输出短路保护, 在不同状态下均能对信号发生器和振子进行保护,延长整机工作寿命.（可以起到隔离的作用,当振子损坏时，不会同时造成发生器的损坏,反之道理同样，发生短路时可以自动适应, 不至于损坏机器）
　　6.10 开机防止冲击电路,软启动以防止振头瞬间功率过大而损坏.（防止开机瞬间电流突然变大，损坏电路）。

ultrasonic test sieve 1. product overview:
ultrasound screening tests are tahan engineer company at dh-300t standard test sieve based on the fine powder of high-tech r & d grade equipment, are currently at the laboratory to do fine powder-like sub-mesh filter clogging when the most effective solution apparatus. can be widely used in pharmaceutical, metallurgical, chemical, mineral processing, food industry laboratories, with a screen filter and high precision, non-blocking mesh characteristics such as a real solution because of reunion, static electricity, strong adsorption of cards, such as blocking mesh laboratory screening problem, the domestic screen industry are a major technological breakthrough.
2. structural components:
a: standard test sieve (host)-dh-300 test sieve is a automatic shut down from time to time to ensure that test repeatability, full-featured, easy to operate the particle size analysis equipment. can be simultaneously a precise separation of pellet 2 ~ 8 particles paragraph. can be used for the fineness of serous material and debris in content analysis.
b: ultrasonic vibration power - a built-chip microcomputer, according to the different ultrasonic status figure for the whole frequency automatic tracking, operation is simple and convenient, to work long hours with low heat oscillator, a stable job status.
c: t200-type test sieve box - φ 200 gb at the box on screen has ultrasonic oscillator device.
d: high-frequency cable-t200-type test sieve frame and between the use of ultrasonic vibration power cables.
e: connector - air connect plug-ins.
f: oscillator - the conversion of high-performance ultrasonic devices.
3. the basic working principle:
ultrasonic test sieve power by the ultrasonic vibration, dh-300 test sieve (host), t200-type test sieve frame, high-frequency cable, connector components. ultrasonic vibration generated by high-frequency electric power oscillation by the oscillator into the form of high-frequency sine sasser, sasser uniform oscillator will be transferred to screen surface. sieve materials online at three million to do low-frequency vibration at the same time, superimposed on the ultrasonic vibration, we can avoid mesh plug, but also improve the yield and quality of screening.
4. general technical data:
ultrasonic vibration power:
4.1 power input: ac 220v ± 10%
4.2 machine current: ≤ 0.6a
4.3 high-frequency current: ≤ 0.5a
4.4 operating frequency: 30khz
4.5 operating mode: continuous, pulse
4.6 ambient temperature: -10 ~ 40 ℃
dh-300 test sieve (host): |
name
units
parameters

screen box
layer
1 ~ 8

sieve box diameter
mm
φ200 φ100 φ75

screen size
mm
0.025 ~ 3

noise
db
less than 50

amplitude
mm
0 ~ 3

vibration frequency
times / min
1400

dimensions
length width
360:300:370 + n * 50

power supply
v; hz
220; 50

machine weight
kg
36 (non-screen box)


5. usage:
5.1 about power supply: ultrasonic control system and power supply separately screening test, test sieve and ultrasonic power are single-phase power supply.
5.2 host and ultrasonic vibration power connection: the t200 test sieve box type oscillator connection line ultrasonic vibration power plug socket behind, open the power supply ultrasonic vibration start work, according to screening is necessary to readjust the power knob.
5.3 dh-300 test sieve of steps: first, test sieve type t200 test box placed on sieve tray fixture height adjustment, tighten nut m12 and m8, and then plug the power cord 220v socket, according to testing requirements of regulation time the timer, open the screen test start switch job, time zero countdown timer automatically turn off when the host.
6, ultrasonic vibrations power features:
6.1 seamlessly continued unique circuit, performance is more superior. (this is my unique domestic counterparts in the latest technology)
6.2 automatically track the frequency of really functions: automatically track the output inductor and the first resonant frequency of vibration, vibration effects will not be as temperature, humidity, and the use of oscillator aging time conditions change, so that the vibration effects have been maintained at the highest level, frequency deviation only 0.1 ‰, conversion efficiency ≥ 92%.
6.3 output current for pure spin waves, can be extended oscillator and signal generator's own life.
6.4 automatic sweep functions: sweep frequency from 10hz-2khz adjustable sweep power from 10% -100%, so that vibration better. (change can produce multiple harmonic)
6.5 output current ripple ≤ 1%, so that the vibration effect of a more stable, good protection from damage oscillator.
6.6 the use of closed-loop control, the output current is more stable, so that current will not be with the input voltage, oscillator aging and other conditions change, can be sustained to maintain a strong power. (many products on the market for open-loop control circuit, that is to say only see the front of the current, before and after should not very good communication, resulting in inconsistency)
6.7 input power adjustable.
6.8 input current shows that the frequency of follow-up instructions, instructions have been the temperature, output short-circuit the instructions, the first vibration failure instructions. could have been more intuitive understanding of their job status (intelligent type equipment).
6.9 protection function: over-power protection, overcurrent protection, overvoltage protection, undervoltage protection, frequency tracking fail-safe, over-temperature protection, output short circuit protection, under different conditions at both the signal generator and vibrator to protect and extend the entire machine working life. (you can play the role of segregation, when the vibrator damage will not cause generator damage at the same time, same reason the other hand, happen when a short circuit can automatically adapt to not damage the machine)
6.10 boot to prevent the impact of circuit, soft start to prevent the vibration head is too large instantaneous power damage. (to prevent transient current boot suddenly become larger, damaged circuit).