VAREM計(jì)量泵和氣動(dòng)隔膜泵有哪些區(qū)別？
在化工加藥和污水處理生產(chǎn)環(huán)節(jié)中，我們經(jīng)常會(huì)用到各種泵類，VAREM計(jì)量泵和氣動(dòng)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(qū)別呢？
首先，讓我們看看LMG計(jì)量泵的原理:
LMG小型隔膜計(jì)量泵結(jié)構(gòu)：該泵由電機(jī)、傳動(dòng)箱和泵頭組成。1.1傳動(dòng)箱由凸輪機(jī)構(gòu)、行程調(diào)節(jié)機(jī)構(gòu)和速比蝸輪機(jī)構(gòu)組成，通過轉(zhuǎn)動(dòng)調(diào)節(jié)手輪來調(diào)節(jié)挺桿行程，改變膜片從表面的膨脹距離來改變流量數(shù)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(jì)量泵的工作原理：電機(jī)通過聯(lián)軸器帶動(dòng)蝸桿，減速蝸輪使主軸和偏心輪轉(zhuǎn)動(dòng)，偏心輪帶動(dòng)挺桿在導(dǎo)向缸內(nèi)往復(fù)運(yùn)動(dòng)快走。與隔膜一起，通過單向閥的作用在泵腔內(nèi)逐漸形成真空，吸入閥打開，液體被吸入；當(dāng)隔膜向前移動(dòng)時(shí)，吸入閥關(guān)閉，排出閥打開，液體在隔膜的推動(dòng)下排出。在泵的往復(fù)運(yùn)動(dòng)中通過調(diào)整一定的行程也可以順時(shí)針工作，形成連續(xù)的壓力液體定量排放。三。流量調(diào)節(jié)特性：泵的流量調(diào)節(jié)依靠調(diào)節(jié)手輪的轉(zhuǎn)動(dòng)帶動(dòng)調(diào)節(jié)螺桿的轉(zhuǎn)動(dòng)，從而改變挺桿之間的距離和隔膜在泵腔內(nèi)的位移行程來確定流量。調(diào)整手輪刻度，確定隔膜行程，精度為95%。流動(dòng)重復(fù)性：準(zhǔn)確率可達(dá)1%。
我們來看看VAREM氣動(dòng)隔膜泵，它在易燃易爆的環(huán)境中，如燃料、火藥、炸藥的運(yùn)輸，可靠性高，成本低，因?yàn)椋旱谝唬�接地后不可能產(chǎn)生火花；第二，工作中沒有熱量，機(jī)器不會(huì)過熱；第三，液體不會(huì)過熱，因?yàn)楦裟け脤σ后w的攪動(dòng)很小。2 氣動(dòng)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(zhì)且成分復(fù)雜，管道容易堵塞，因此電泵會(huì)形成高負(fù)荷的情況，電機(jī)也容易發(fā)熱。氣動(dòng)隔膜泵可通過顆粒，流量可調(diào)。當(dāng)管道被堵塞時(shí)，它會(huì)自動(dòng)停止，直到暢通為止。3.另外，WaterSunny氣動(dòng)隔膜泵體積小，移動(dòng)方便，不需要基礎(chǔ)，占地面積小，安裝方便，經(jīng)濟(jì)實(shí)惠。可用作移動(dòng)式物料輸送泵。4在處理危險(xiǎn)和腐蝕性物質(zhì)時(shí)，隔膜泵能將物質(zhì)與外界完全分離。5氣動(dòng)隔膜泵可用于輸送化學(xué)性質(zhì)不穩(wěn)定的流體，如：感光材料、絮凝劑等。這是因?yàn)楦裟け眉羟辛Φ停瑢Σ牧系奈锢碛绊懶　?br />氣動(dòng)隔膜泵在工業(yè)領(lǐng)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(dòng)隔膜泵來完成，間接保證了員工的安全。
總之，VAREM計(jì)量泵主要用于小流量和微流量，精度要求高，動(dòng)力部分一般為電動(dòng)；而氣動(dòng)隔膜泵主要用于大流量和中流量，精度要求高，動(dòng)力部分一般為氣源。以上是varem計(jì)量泵與氣動(dòng)隔膜泵的區(qū)別。欲了解更多變量計(jì)量泵和氣動(dòng)隔膜泵，請咨詢上海龍亞泵技術(shù)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.