VAREM計量泵和氣動隔膜泵有哪些區別？
在化工加藥和污水處理生產環節中，我們經常會用到各種泵類，VAREM計量泵和氣動隔膜泵是比較常用的兩種形式的泵。那么這兩種泵有什么區別呢？
首先，讓我們看看LMG計量泵的原理:
LMG小型隔膜計量泵結構：該泵由電機、傳動箱和泵頭組成。1.1傳動箱由凸輪機構、行程調節機構和速比蝸輪機構組成，通過轉動調節手輪來調節挺桿行程，改變膜片從表面的膨脹距離來改變流量數量的目的。1.2缸體由泵頭、吸入閥組、排出閥組、隔膜座等組成。LMG型小隔膜計量泵的工作原理：電機通過聯軸器帶動蝸桿，減速蝸輪使主軸和偏心輪轉動，偏心輪帶動挺桿在導向缸內往復運動快走。與隔膜一起，通過單向閥的作用在泵腔內逐漸形成真空，吸入閥打開，液體被吸入；當隔膜向前移動時，吸入閥關閉，排出閥打開，液體在隔膜的推動下排出。在泵的往復運動中通過調整一定的行程也可以順時針工作，形成連續的壓力液體定量排放。三。流量調節特性：泵的流量調節依靠調節手輪的轉動帶動調節螺桿的轉動，從而改變挺桿之間的距離和隔膜在泵腔內的位移行程來確定流量。調整手輪刻度，確定隔膜行程，精度為95%。流動重復性：準確率可達1%。
我們來看看VAREM氣動隔膜泵，它在易燃易爆的環境中，如燃料、火藥、炸藥的運輸，可靠性高，成本低，因為：第一，接地后不可能產生火花；第二，工作中沒有熱量，機器不會過熱；第三，液體不會過熱，因為隔膜泵對液體的攪動很小。2 氣動隔膜泵在建筑工地、工礦廢水排放等惡劣場所，由于污水中含有雜質且成分復雜，管道容易堵塞，因此電泵會形成高負荷的情況，電機也容易發熱。氣動隔膜泵可通過顆粒，流量可調。當管道被堵塞時，它會自動停止，直到暢通為止。3.另外，WaterSunny氣動隔膜泵體積小，移動方便，不需要基礎，占地面積小，安裝方便，經濟實惠。可用作移動式物料輸送泵。4在處理危險和腐蝕性物質時，隔膜泵能將物質與外界完全分離。5氣動隔膜泵可用于輸送化學性質不穩定的流體，如：感光材料、絮凝劑等。這是因為隔膜泵剪切力低，對材料的物理影響小。
氣動隔膜泵在工業領域的作用是巨大的，許多難以用人手完成的工作都可以通過氣動隔膜泵來完成，間接保證了員工的安全。
總之，VAREM計量泵主要用于小流量和微流量，精度要求高，動力部分一般為電動；而氣動隔膜泵主要用于大流量和中流量，精度要求高，動力部分一般為氣源。以上是varem計量泵與氣動隔膜泵的區別。欲了解更多變量計量泵和氣動隔膜泵，請咨詢上海龍亞泵技術部。
What are the differences between varem metering pump and pneumatic diaphragm pump?
In the chemical dosing and sewage treatment production, we often use a variety of pumps, varem metering pump and pneumatic diaphragm pump are two kinds of commonly used pumps. So what's the difference between these two pumps?
First, let's look at the principle of LMG metering pump
LMG small diaphragm metering pump structure: the pump is composed of motor, transmission box and pump head. 1.1 the transmission box is composed of cam mechanism, stroke adjusting mechanism and speed ratio worm gear mechanism. The tappet stroke is adjusted by turning the adjusting hand wheel, and the flow quantity is changed by changing the expansion distance of the diaphragm from the surface. 1.2 the cylinder block is composed of pump head, suction valve group, discharge valve group, diaphragm seat, etc. Working principle of LMG small diaphragm metering pump: the motor drives the worm through the coupling, decelerates the worm wheel to make the spindle and eccentric wheel rotate, and the eccentric wheel drives the tappet to move back and forth in the guide cylinder. Together with the diaphragm, a vacuum is gradually formed in the pump cavity through the action of the one-way valve, the suction valve is opened, and the liquid is inhaled; when the diaphragm moves forward, the suction valve is closed, the discharge valve is opened, and the liquid is discharged under the push of the diaphragm. In the reciprocating motion of the pump, by adjusting a certain stroke, it can also work clockwise to form a continuous pressure liquid quantitative discharge. Three. Flow regulation characteristics: the flow regulation of the pump depends on the rotation of the regulating hand wheel to drive the rotation of the regulating screw, so as to change the distance between tappets and the displacement stroke of the diaphragm in the pump cavity to determine the flow. Adjust the hand wheel scale to determine the diaphragm stroke, the accuracy is 95%. Flow repeatability: the accuracy can reach 1%.
Let's take a look at the varem pneumatic diaphragm pump. It has high reliability and low cost in inflammable and explosive environment, such as the transportation of fuel, gunpowder and explosive, because: first, there is no spark after grounding; second, there is no heat in the work, so the machine will not overheat; third, the liquid will not overheat, because the diaphragm pump stirs the liquid very little. In the construction site, industrial and mining wastewater discharge and other bad places, because the sewage contains impurities and the composition is complex, the pipeline is easy to block, so the electric pump will form a high load situation, and the motor is also easy to heat. Pneumatic diaphragm pump can pass through particles, and the flow rate is adjustable. When the pipe is blocked, it will stop automatically until it is unblocked. 3. In addition, watersunny pneumatic diaphragm pump is small in volume, easy to move, no foundation, small in floor area, easy to install and economical. It can be used as mobile material delivery pump. When dealing with dangerous and corrosive substances, diaphragm pump can completely separate substances from the outside world. 5 pneumatic diaphragm pump can be used to transport unstable chemical properties of the fluid, such as: photographic materials, flocculants, etc. This is because the diaphragm pump shear force is low, the physical impact on the material is small.
Pneumatic diaphragm pump plays a huge role in the industrial field. Many difficult tasks can be completed by hand, which indirectly ensures the safety of employees.
In short, the varem metering pump is mainly used for small flow and micro flow, with high accuracy requirements, and the power part is generally electric; while the pneumatic diaphragm pump is mainly used for large flow and medium flow, with high accuracy requirements, and the power part is generally air source. The above is the difference between varem metering pump and pneumatic diaphragm pump. For more information about variable displacement metering pump and pneumatic diaphragm pump, please consult Shanghai Longya pump technology department.