Stainless steel vacuum pump

Stainless steel vacuum pump has corrosion resistance, but we still need to pay attention to the following points when using, so as to extend its service life:

1. Stainless steel vacuum pump should be operated in high efficiency area, that is, in critical vacuum or critical exhaust pressure area.

2. Avoid operating near vacuum or exhaust pressure. Operating in this area, not only the efficiency is very low, but also the work is very unstable, easy to produce vibration and noise.

3. For stainless steel vacuum pumps with high vacuum, although stainless steel is used, cavitation often occurs in the operation of the pumps in this area. The obvious sign of this phenomenon is that there is noise and vibration in the pumps.

4. Cavitation will cause damage to pump body, impeller and other parts, so that the pump can not work.

Above is our introduction today, so stainless steel vacuum pump is good, but we must avoid these, in order to better use, I hope Xiaobian simple introduction can bring you benefits.

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Vacuum-Pump-for-Glue-Paper-Making-Vacuum-Coating

Factors Influencing the Price of Water Ring Vacuum Pump

Water ring vacuum pump has a wide range of applications in our life. It has many advantages and has been unanimously recognized by users. For customers, when choosing and purchasing equipment, the price of water ring vacuum pump is more concerned by everyone. Let's take a look at the factors affecting its price.

1. The quality of spare parts and raw materials. The water ring vacuum pump mainly consists of filter, marble, exhaust hood and other accessories. The quality of these spare parts can directly affect its price.

2. The material of the pump body can be divided into nodular cast iron and grey cast iron. For example, spheroidal graphite is obtained by spheroidizing and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thus obtaining higher strength than carbon steel. Therefore, material quality is also one of the important factors affecting its price.

3. Technical content of water ring vacuum pump. As we all know, the maturity of technology, the stability, reliability and life of products manufactured by high-standard processing and production equipment have an impact.

4. Regionality, most domestic products are now facing the dilemma of having spare parts without technology and spare parts without technology. Because of the regional problems of raw materials, the prices of pumps are uneven.

That is to say, there are many factors affecting the price of water-ring vacuum pump, whether it is the difference of internal material, technology, or regional differences, which can directly affect its price. When choosing and purchasing products, we should consider the price according to the actual situation, while not ignoring the quality, hoping that the above content can bring some help to you.

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Vacuum-Pump-Application-Range

How-to-Select-Vacuum-Pump

Liquid Ring Vacuum Pump Purchase

The type and type of liquid ring vacuum pump are various. Choosing a suitable equipment to meet the requirements of working indicators plays a vital role in the efficiency of production and operation safety. The following section summarizes several methods for you to choose and purchase:

1. First of all, we should fully understand the composition of the exhausted gas. If the gas contains no condensable vapor, particulate dust, corrosiveness, explosion and so on; if the extracted gas is explosive, it should be equipped with explosion-proof motor, because the whole working process of the equipment is isothermal.

2. Understand the impact of the oil vapor discharged from the equipment on the environment. If the environment is not allowed to be polluted, choose oil-free equipment or discharge the oil vapor outdoors.

3. The equipment should be assembled correctly. Because each kind of equipment has selective pumping, so sometimes the selection of a pump can not meet the requirements of pumping, several pumps need to be combined to complement each other in order to meet the requirements of pumping.

4. If there are many equipments working at the same time, the circulating liquid should be cooled, otherwise the vacuum degree will be affected. The cooling device can be equipped with cooling tower, and booster pump should be equipped to pressurize the pipeline.

5. Whether the vibration caused by the working equipment has an impact on the process and environment, if the environment is not allowed, the vibration-free pump should be selected or vibration-reducing measures should be taken.

6. Under its working pressure, the equipment should be able to discharge all the gas produced in the process of vacuum equipment.

Special attention should also be paid to considering the price, operation and maintenance costs of the equipment according to the actual situation. I hope that the method of selecting and purchasing the liquid ring vacuum pump described above can really help you, apply it to practice and bring real benefits to production operations.

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Water Ring Vacuum Pump Advantages

We all know that the water ring vacuum pump has good safety and is often used in mine operation. From this point, we can see the difference between the equipment and other products. Speaking of the differences, we should mention the advantages of this product, mainly as follows:

1. Water ring vacuum pump has simple structure, low manufacturing accuracy and easy processing.

2. Compact structure, high pump speed, generally can be directly connected with the motor, without deceleration device. Therefore, with a small structure size, we can get a large amount of exhaust gas and occupy a small area.

3. Compressed gases are basically isothermal, i.e. the temperature change of compressed gases is very small.

4. Because there is no metal friction surface in the pump chamber, there is no need to lubricate the pump, and the wear is very small. The sealing between the rotating part and the fixing part can be accomplished directly by the water seal.

5. Inhalation uniformity, stable and reliable work, simple operation and convenient maintenance.

The advantages of water ring vacuum pump not only illustrate its specialty, but also effectively reflect the reliability, wear resistance, easy maintenance and so on, which is precisely the simple requirements for equipment in industrial mine operation.

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Variable-Pitch-Screw-Dry-Vacuum-Pump

How to adjust screw vacuum pump

Screw vacuum pump is a kind of suction and exhaust equipment which uses a pair of screw to make synchronous high-speed reverse rotation in the pump housing. After a period of time, the gap of the equipment gradually occurs, which will bring trouble to the equipment. Here we will teach you how to adjust it:

How to adjust the gap

1. Screw vacuum pumps are usually twin-screw, single-suction or double-suction type of gap adjustment is different.

2. If the new pump is not worn out:

Open the gear end of the pump drive, loosen the pressure sleeve of the gear, manually adjust the clearance between the spiral sleeves and tighten the gear again, so that the relative clearance between the screw sleeves can be adjusted well, but this is a technical work without certain experience, and each manufacturer is a little different, find the original manufacturer to adjust.

3. If the adjustment of the axial clearance is mainly to adjust the adjusting gasket of the positioning bearing, but it is not necessary to adjust after the general factory.

4. If the screw sleeve or pump sleeve is worn out, it is generally not easy to solve this problem by adjusting the clearance, only parts can be replaced.

2. Factors leading to equipment replacement

1. Oil pollution is the common cause of vacuum pump failure and unstable operation. If water or acid vapor flows through the pump and the oil is kept working for a period of time.

2. There will be serious corrosion and damage to the pump. The simple way to determine the need for oil change is to connect a vacuum meter to the pump to find out whether it can reach the rated vacuum.

3. In small pumps, the black oil does not necessarily indicate that the oil has been polluted.

4. If you smell the presence of solvents, you usually need to change oil. Light brown, dark oil also indicates the presence of water. Once you have doubts, you should change oil.

In order to reduce the gap of screw vacuum pump, we should start from the daily maintenance, regular cleaning and maintenance, if the equipment reaches the deadline, then replace it. Don't think it's a minor problem that doesn't matter. Often big problems come from minor problems.

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Vacuum-Pump-System-in-Vacuum-Drying

Roots Vacuum Unit Key Points for Selection

The selection of pumping speed ratio between vacuum pump and front pump is very important for vacuum unit. Next, I will briefly talk about the matters needing attention in the selection of Roots vacuum unit.

Because the compression ratio of vacuum pump is very limited. This compression ratio determines the capacity of the front pump, because the compression ratio is the inverse ratio of the pumping speed. Generally, the compression ratio is chosen in the range of 2 to 10. In addition, consideration should be given to the requirement of pre-sampling time. Vacuum equipment is used as auxiliary equipment in various mechanical equipment. If the normal working time is much longer than the pre-pumping time, a smaller front pump (compression ratio can be larger), if the vacuum suffocation is larger. Moreover, it is required to pre-pump quickly, using a larger front-stage pump.

Sometimes in order to better play the efficiency of the equipment, the unit is equipped with a larger pre-pumping pump in front, which is stopped after normal operation, and maintained with a smaller pre-pumping, so as to save power. The limit pressure requirement of Roots vacuum pump unit must also be considered when choosing the front stage pump. For the high limit vacuum (1 *10-3 pa~1 *10-2 Pa pressure), two-stage rotary vane oil seal mechanical pump or two-stage sliding mechanical pump are generally selected as the front stage pump.

The limit vacuum degree requires that a single-stage oil seal mechanical pump be selected as the front pump between (1*10-2Pa~1*10-1Pa) and a reciprocating vacuum pump or a liquid ring vacuum pump be selected as the front pump between 133 and 1333 PA. In order to obtain a high pumping rate at low inlet pressure (1-100pa), a Roots vacuum pump can be used as the first stage pump of another Roots vacuum pump to form a three-stage or four-stage unit. At this time, the pumping speed ratio of Roots vacuum pump is generally between 2 and 5.

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Small Water Ring Vacuum Pumps for the Use Guidelines

Small water ring vacuum pumps are not suitable for extracting toxic gases that corrode ferrous metals, react chemically with pump oil, contain particulate dust, and contain too much oxygen and explosive. It can not be used as a transmission pump (i.e. pumping from one container to another). The circumferential motion of the motor of the small water ring vacuum pump makes the diaphragm inside the pump reciprocating through the mechanical device, thus compresses and stretches the air in the fixed volume pump chamber to form a vacuum (negative pressure). Under the action of the pressure difference, the gas pressure (suction) is put into the pump chamber and then discharged from the exhaust outlet.

First is the problem of starting with load. If a small water ring vacuum pump has a vacuum at its suction port before starting or a pressure at its exhaust port, another technical parameter of the pump should be considered: a large start-up load at the intake port and a large start-up load at the exhaust port. There is also the medium temperature problem of small water ring vacuum pump. According to the temperature of the medium gas passing through the pump, choose the ordinary type or the high temperature type.

Reliability of small water ring vacuum pump. According to the severity of the consequences of the failure of the micro-pump, it is completely in accordance with its own requirements. Particular attention is paid to the fact that this parameter is measured under full load and uninterrupted operation, which is worse. If the actual operation is not full load or continuous operation, the value will be higher, depending on the working condition of the pump. The performance is a test of the manufacturer's technical strength. From the appearance of the product, we can see some, such as the use of special motors rather than ordinary low-cost motors, the weight is relatively heavy in the case of comparable volume, and so on. According to the price of the product, we can also know a little about it.

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