2019年6月24日星期一

Superior Performance of Oilless Screw Vacuum Pump

Oil-free screw vacuum pump is also a kind of dry pump, its excellent performance has been the consensus of the majority of users, this kind of environmentally friendly product has become the main trend of today's society. In order to achieve the popularization of screw pump faster, domestic manufacturers have accelerated the development and manufacture of screw pump, its superiority has reflected the development trend of this product. It will certainly become a popular product in the domestic industry, and its application will not be lower than the current vacuum pump products.

And the advantages of oil-free screw vacuum pump can be said to be beyond the reach of other products, first of all, the protection of water resources, the pump does not exist the concept of using water, this basic condition to a large extent saves the use of water energy, which is a relatively broad definition of area, and the other performance is to play a considerable role in the environmental protection of enterprises, the meaning of green products. Knowledge has penetrated into every enterprise, which is a necessity of historical development and a concept of product diversification.


The formation of oil-free screw vacuum pump promotes the development of vacuum pump products, at the same time, it strengthens the awareness of environmental protection, leads the whole vacuum field to another development trend, increases the redefinition of products in the market, and also opens up the promotion of development among enterprises, which is conducive to close links between products and enterprises.


2019年6月21日星期五

Development Practicability of Dry Vacuum Pump

In order to enhance the performance of dry vacuum pump products, combined with the exertion of its value and practicability, highlight the continuous improvement of its practical advantages, improve its quality and practicability with high-efficiency product production strength, from the application of equipment to the promotion of the actual product development ability, so as to accelerate its application in the process of reliable productivity development. The improvement of product performance and application strength further enhances the overall improvement of product practical value and highlights the development strength of product performance.

Through the improvement of the product strength of dry vacuum pump, the embodiment of the practical performance of its products is constantly accelerated, the overall driving force of its actual superiority level is enhanced by the comprehensive application of products, and the promotion of its actual ability is accelerated. Under the driving force of the overall application of the advantages of expanding the practical effect of products, the product strength of the equipment is brought into play, and the enhancement of the high-efficiency superiority of the equipment is accelerated. Quickly develop its quality and practical advantages, and enhance the practical ability of equipment.


In the process of speeding up the application of dry vacuum pump quality development, it is necessary to speed up the development of its application strength with high-efficiency product performance, fully enhance the upgrading of equipment application ability, enhance the development of its value application strength with high-quality product strength, and expand the pioneering advantages of its actual product development ability.

Oil-free-screw-vacuum-pump-in-vacuum-recovery

Refrigeration and drying of liquid ring vacuum pump

With the continuous acceleration of economic development, the application of liquid ring vacuum pump in production and life has become more and more widespread, from being initially used as self-suction pump, and gradually developed to be used in many industrial sectors such as petroleum, machinery, chemical industry, mining, medicine, light industry and food. Here we mainly talk about the application of water ring vacuum pump in refrigeration and drying.

Speaking of freeze-drying, you may first think of food, such as condiments, fruits, of course, there are seafood freezing, this technology is basically to use the special advantages of water ring vacuum pump, change the characteristics of food itself, after vacuum drying to retain the nutrition of food, in order to facilitate transportation and other forms of market sales.

Because in a long time, for food, especially seafood processing, most of the manual operation, but also depends on the seasonal changes, the efficiency is very low, but the use of water ring vacuum pump technology, not only the production efficiency has increased many times, but also the quality of production has been guaranteed.

This freeze-drying technology of water ring vacuum pump is not only applied to food processing, but also to some vaccines and medicines produced by pharmaceutical factories. It is also used to preserve organisms in the medical industry, which achieves very good results and has become a more practical vacuum equipment in recent years. This process is to freeze the material before vacuum, when the material has been frozen into ice water sublimation after removal, so the freeze-dried material will remain in its original state. This technology has been developed in China for decades, and its design is quite mature, which has made great contributions to many industries.

In fact, the application of water ring vacuum pump in refrigeration and drying is very extensive. It has been applied in all walks of life and has a very broad prospect.

2019年6月20日星期四

single stage rotary vane vacuum pump characteristics

Single-stage rotary vane vacuum pump oil-free (corrosion-resistant) vertical reciprocating vacuum pump is a replacement product of horizontal vacuum pump, and is the main equipment to obtain rough vacuum. The complete isolation of crankcase and cylinder is realized by using full sealing device, and advanced oil-free lubrication is realized by using self-lubricating material for piston rings. Because there is no sewage discharge, the vacuum pump is especially suitable for vacuum distillation, vacuum evaporation, vacuum drying, vacuum concentration and vacuum impregnation in chemical, pharmaceutical and food industries.

When running, driven by the motor, the piston in the cylinder moves to and fro through the action of crank-connecting rod mechanism (rotating motion into linear motion). When the piston moves from the left end to the right end in the cylinder, the pressure in the left chamber space decreases continuously as the volume of the left chamber of the cylinder increases. When the pressure in the left chamber space is lower than that in the pumped container, according to the principle of gas pressure balance, the gas in the pumped container is continuously pumped into the left chamber through the suction valve 5, which is in the process of suction. When the piston reaches its rightmost position, the left chamber of the cylinder is filled with gas. Then the piston moves from the right to the left, and the suction valve 5 closes automatically. Gas is gradually compressed as the piston moves from right to left. When the gas in the cylinder reaches the exhaust pressure, the exhaust valve 4 is opened and the gas is discharged, thus completing a working cycle. When the piston moves from the left end to the right end, repeat the above cycle until the pumped container reaches a certain equilibrium pressure.

Roots pump with relief valve is widely used in all aspects of vacuum acquisition. It extends the working range of oil-sealed mechanical vacuum pump under low inlet pressure. It has the characteristics of small volume and large pumping speed. It has large pumping speed in the range of 1-100pa inlet pressure. It is especially suitable for vacuum systems requiring large pumping speed under low inlet pressure, such as power transformer, power capacitor, etc. Vacuum drying, vacuum impregnation, vacuum heat treatment, vacuum smelting exhaust, vacuum coating equipment pre-pumping, large test wind tunnel exhaust and lighting production line exhaust, etc.

Application Performance of Roots Vacuum Pump

Based on the current overall application ability of Roots vacuum pump, on the basis of fully improving the actual performance of the product, it is necessary to promote the overall application ability of the product by advancing the superiority of the development, enhance its superiority of development, increase the promotion of the basic performance of the product, and provide the effective ability for the overall promotion by the development superiority of the technical performance of the product, and through the higher energy of the product. On the basis of force advantage, we should promote the overall development of Roots pump, promote its superior performance, and do a good job in promoting the application effect of products.

In order to speed up the development of Roots vacuum pump, in the application of its ability in various aspects of the market, it is necessary to gradually improve the application ability of products, increase the beneficial promotion of its product applicability, expand the overall driving force of its functional development, promote the ability of products with strong application advantages, and fully improve the application of basic products as a whole. In effect, through its technical incessant advantageous promotion, it can give full play to the promotion of product application ability.

The performance expansion of Roots vacuum pump has a continuous promotion effect on the overall utilization rate of products. In order to improve the application effect of products, it is necessary to promote all aspects of the application performance of products with greater development advantages, so as to promote the actual application ability of products.


2019年6月19日星期三

Small vacuum pump

1. Start-up with load.

If a small vacuum pump has a vacuum in its suction port or a pressure in its exhaust port before starting, another technical parameter of the pump should be considered: the maximum start-up load of the intake port and the maximum start-up load of the exhaust port.

2. Medium temperature of small vacuum pump. According to the temperature of the medium gas passing through the pump, choose the ordinary type or the high temperature type.

3. Reliability of small vacuum pumps. According to the severity of the consequences of the failure of the micro-pump, it is completely in accordance with its own requirements. Special attention is paid to the fact that this parameter is measured under full load and uninterrupted operation, which is the worst working condition. If the actual operation is not full load or continuous operation, the value will be higher, depending on the working condition of the pump. This 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.

4. Electromagnetic interference of small vacuum pump. If a small vacuum pump is controlled by a precise circuit, it may be necessary to order a small vacuum pump with low electromagnetic interference, depending on the anti-interference capability of the circuit.

Several Vacuum Pumps in Chemical Industry

1. Several kinds of vacuum pumps commonly used in chemical industry-the common vacuum pumps in chemical industry can be simply divided into variable-volume vacuum pumps and jet vacuum pumps. Variable-volume vacuum pumps are devices that use the periodic change of pump chamber volume to complete suction and exhaust. Reciprocating vacuum pumps, rotary vane vacuum pumps, slide valve vacuum pumps, water ring vacuum pumps and Roots vacuum pumps belong to variable-volume vacuum pumps. Type vacuum pump. Jet vacuum pump is a momentum transfer pump that uses the high-speed jet generated by the pressure drop of Venturi effect to transport gas to the outlet. Water jet vacuum pump, steam jet vacuum pump, steam-water series jet vacuum pump and steam-water combined jet vacuum pump belong to the same kind of jet vacuum pump. 2. Working Principle and Advantages and Disadvantages of Variable Volume Vacuum Pump

(1) Reciprocating vacuum pump, rotary vane vacuum pump, slide valve vacuum pump and Roots vacuum pump inhale, compress and discharge gas by reciprocating motion or rotation of piston. Their advantage is that the vacuum degree of the new pump is relatively high, but the piston is a running part, so the wear of the piston is inevitable. With the increase of maintenance times, the working vacuum degree will continue to decline until it can not meet the production requirements. This kind of pump has the disadvantage of high working noise, high fuel consumption and high failure rate. Generally, it needs to open a spare one, which invisibly increases the cost of equipment investment and operation. In addition, if this kind of pump is used to pump condensable gases such as suction steam, lubricating oil will be emulsified, so it can only be used to suck non-condensable (air) gases, nor can it suck medium with granular shape, which limits its scope of application.


(2) Water ring vacuum pump rotates by an eccentric rotor with multi-blades installed in the pump shell, throwing water into the pump shell to form a water ring concentric with the pump shell, and the water ring and the rotor blades form a volume periodic change, thus inhaling, compressing and discharging gas. It has the advantages of large suction capacity at low vacuum and direct suction of condensable gases such as water vapor. Its shortcomings are low vacuum, inability to suck granular media, high-speed rotation of the rotor is not easy to do anti-corrosion treatment, so it can not suck corrosive media. 3. Working Principle and Advantages and Disadvantages of Jet Vacuum Pump

Jet vacuum pump is a momentum transfer pump that uses the high-speed jet generated by the pressure drop of Venturi effect to transport gas to the outlet. It is divided into water jet vacuum pump, steam jet vacuum pump, steam-water series jet vacuum pump, steam-water combination jet vacuum pump. Jet vacuum pump is widely used in chemical operation because of its wide vacuum range, direct suction of condensable gases such as water vapor and granular media, simple structure, easy operation, small maintenance of non-operating components, energy saving and consumption reduction.