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雕刻機(jī)專用真空泵選型怎么選呢？下面來了解一下幾個(gè)重點(diǎn)。

How to choose the vacuum pump for carving machine? Here are a few key points.

一、常溫作業(yè)介質(zhì)(0-50℃)，單純抽水或溶液，不必水氣兩用，但要求具有自吸能力，并對(duì)流量和輸出壓力有要求。

I. normal temperature working medium (0-50 ℃), pure water pumping or solution, without water and gas dual-use, but with self-priming capacity and requirements for flow and output pressure.

闡明：抽的作業(yè)介質(zhì)是水、非油性、不是強(qiáng)腐蝕的液體等溶液(不能含有固體顆粒等)、有必要有自吸功用。

It is clarified that the working medium of pumping is water, non oil, non strongly corrosive liquid and other solutions (without solid particles, etc.), so it is necessary to have self-priming function.

二、常溫作業(yè)介質(zhì)(0-50℃)，需求抽水或氣體(可能水氣混合或空轉(zhuǎn)、干轉(zhuǎn)場(chǎng)合)，垂青體積、噪音、接連運(yùn)用等功用。

II. Normal temperature working medium (0-50 ℃), water pumping or gas demand (possible water gas mixing or idling, dry running occasions), vertical volume, noise, continuous use and other functions.

闡明：要求水氣兩用、能夠長(zhǎng)時(shí)間干轉(zhuǎn)、不損壞泵；24小時(shí)接連運(yùn)轉(zhuǎn)；體積特別小、噪音低，但對(duì)流量、壓力要求不高。

Clarification: it is required that water and gas can be used for both purposes, dry running for a long time without damaging the pump, continuous running for 24 hours, small volume and low noise, but not high flow and pressure requirements.

1、用微型泵抽氣或抽真空，但有時(shí)會(huì)有液態(tài)水進(jìn)入泵腔。

1. Use a micro pump to pump air or vacuum, but sometimes liquid water will enter the pump cavity.

2、要求微型泵既能抽氣又能抽水。

2. The micro pump is required to be able to pump both air and water.

3、用微型泵抽水，但有些時(shí)候可能泵沒有水可抽，處于“干轉(zhuǎn)”狀況。

3. Use a micro pump to pump water, but sometimes there may be no water to pump, which is in the "dry running" condition.

某些傳統(tǒng)水泵害怕“干轉(zhuǎn)”，“干轉(zhuǎn)”乃至?xí)p壞泵。而WKA系列產(chǎn)品本質(zhì)上是一種復(fù)合功用泵，它集成了真空泵和水泵的功用，有人把它叫作“真空水泵”。因而，在沒有水的情況下，它會(huì)抽真空，有水的時(shí)候它就抽水。無論是抽氣狀況仍是抽水狀況，都?xì)w于正常作業(yè)優(yōu)先域，也就無所謂“干轉(zhuǎn)”損害。

Some traditional pumps are afraid of "dry running", "dry running" and even damage the pump. WKA series of products are essentially a kind of composite function pump, which integrates the functions of vacuum pump and water pump. Some people call it "vacuum pump". Therefore, in the absence of water, it will vacuum, when there is water, it will pump. Whether it is pumping or pumping, it belongs to the normal operation field, so there is no "dry transfer" damage.

4、主要用微型泵抽水，但不期望在抽水前靠人工加“引水”(有些水泵在作業(yè)前需求人工參加一些“引水”，這樣泵才能把低處的水抽上來，不然泵無法抽水乃至損壞)，即期望泵有“自吸”功用。這時(shí)就能夠選PHW、WKA系列產(chǎn)品，它們的利益就在于：沒有接觸到水時(shí)，它就抽真空，構(gòu)成真空后靠氣壓把水壓上來，而后開始抽水。

4. It is mainly used to pump water with micro pump, but it is not expected to add "water diversion" manually before pumping (some pumps need to participate in some "water diversion" manually before operation, so that the pump can pump up the water at the lower place, otherwise the pump cannot pump water or even damage), and it is expected that the pump has the function of "self-priming" at present. At this time, PHW and WKA series products can be selected. Their benefits lie in that when they are not in contact with water, they vacuumize, form a vacuum and then rely on air pressure to raise the water pressure, and then start pumping.

三、高溫作業(yè)介質(zhì)(0-100℃)，比如用微型水泵來進(jìn)行水循環(huán)散熱、水冷卻，或者抽高溫、高溫水蒸氣、高溫液體等，就有必要用微型水泵(高溫型)才行：

3. High temperature working medium (0-100 ℃), such as using micro water pump for water circulation and cooling, or pumping high temperature, high temperature steam, high temperature liquid, etc., it is necessary to use micro water pump (high temperature type):

1.溫度在：50-80℃之間，能夠選用微型水氣兩用泵WKA系列高溫介質(zhì)型，比較高耐溫溫度就是80℃或100℃；

1. The temperature is between 50-80 ℃, the high temperature medium type of WKA series of micro water gas dual-purpose pump can be selected, and the maximum temperature resistance is 80 ℃ or 100 ℃;

2.假如溫度在：50-100℃之間，就有必要選用WKA系列高溫介質(zhì)型，比較高耐溫溫度就是100℃；

2. If the temperature is between 50-100 ℃, it is necessary to select WKA series high temperature medium type, and the maximum temperature resistance is 100 ℃;

四、對(duì)流量有較大要求(超過20升/分鐘)，但介質(zhì)中含有少數(shù)油分、固體顆粒、殘?jiān)取?/p>

IV. there is a large demand for flow (more than 20 L / min), but the medium contains a small amount of oil, solid particles, residues, etc.

闡明：要抽的介質(zhì)中，

Elucidation: in the medium to be pumped,

1、包括數(shù)量較少的、直徑較小的軟性固體顆粒(如魚類糞便、污水淤泥、殘?jiān)?，但黏度不能太大，且比較好不要有頭發(fā)一類的環(huán)繞物；

1. It includes a small number of soft solid particles with small diameter (such as fish manure, sewage sludge, residue, etc.), but the viscosity should not be too large, and it is better not to have the surrounding materials such as hair;

2、答應(yīng)作業(yè)介質(zhì)中含有少數(shù)的油分(例如污水面上漂浮的少數(shù)油)，但不能全部是油！

2. It is allowed that the working medium contains a small amount of oil (such as a small amount of oil floating on the sewage surface), but not all of it is oil!

3、流量要求較大(超過20升/分鐘)：

3. Large flow requirements (more than 20 L / min):

雕刻機(jī)真空泵在正常運(yùn)轉(zhuǎn)中需注意以下事項(xiàng)：

The vacuum pump of engraving machine should pay attention to the following matters during normal operation:

1． 新上設(shè)備內(nèi)易有雜質(zhì)，吸入泵內(nèi)會(huì)形成葉輪及泵殼損壞。

1. The new equipment is easy to have impurities, and the impeller and pump shell will be damaged in the suction pump.

2． 裝置要水平結(jié)實(shí)，管路不要重壓在泵上。

2. The device shall be level and firm, and the pipeline shall not be pressed on the pump.

3． 開啟時(shí)泵腔內(nèi)應(yīng)有一定量的循環(huán)液（液體占泵腔體積2/3，不宜過多或過少），不然易形成機(jī)械密封損壞。

3. When the pump is opened, there should be a certain amount of circulating liquid in the pump cavity (the liquid accounts for 2 / 3 of the pump cavity volume, which should not be too much or too little), otherwise it is easy to form mechanical seal damage.

4． 供水方法比較好用閉路循環(huán)系統(tǒng)或水箱平穩(wěn)常壓自循環(huán)供水，不能正壓供水或運(yùn)用自來水管路供水。

4. The water supply method is best to use closed-circuit circulation system or water tank to supply water steadily and normally, and it is not allowed to use positive pressure water supply or tap water pipeline.

5． 挑選流動(dòng)性較好，受溫度影響較小的循環(huán)液（比較好用水做循環(huán)液）。

5. Select circulating liquid with good fluidity and little influence of temperature (water is the best circulating liquid).

6． 定時(shí)查看軸承，避免缺油形成設(shè)備損壞。

6. Check the bearing regularly to avoid equipment damage due to oil shortage.

7． 泵排氣口的管路不得高于1米 （從法蘭口算起）。

7. The pipeline of the pump exhaust port shall not be higher than 1 m (calculated from the flange port).

8． 泵腔內(nèi)有爆炸聲時(shí)闡明已達(dá)到極限真空并發(fā)生氣蝕，此刻應(yīng)打開進(jìn)氣閥門通入適量大氣。

8. When there is explosion sound in the pump cavity, it is clarified that the limit vacuum has been reached and cavitation occurs. At this moment, the air inlet valve shall be opened to enter a proper amount of atmosphere.

9． 配用電機(jī)11千瓦以上的泵，應(yīng)裝備降壓發(fā)動(dòng)。

9. Pumps equipped with motors above 11kw shall be equipped with step-down motors.

10．泵停止運(yùn)行時(shí)，有必要封閉進(jìn)泵循環(huán)水入口處的閥門，冬天應(yīng)將泵腔內(nèi)循環(huán)水放空。

10. When the pump stops running, it is necessary to close the valve at the inlet of circulating water into the pump. In winter, the circulating water in the pump cavity shall be vented.

11．設(shè)備作業(yè)環(huán)境溫度不宜過高，設(shè)備禁止暴曬。

11. The operating environment temperature of the equipment shall not be too high, and the equipment shall not be exposed to the sun.