The relationship between different casting processes and prices of liquid ring vacuum pumps

With the development of society, the crude industrial form is no longer accustomed to society and will be screened. For example, in terms of the casting process of liquid ring vacuum pumps, sand casting technology is widely used for castings of liquid ring vacuum pumps. However, the quality, functions, and customer requirements of liquid ring vacuum pumps continue to improve. The traditional sand casting process used for liquid ring vacuum pump casting can no longer meet the demand. The castings produced by sand casting are relatively cheap, but the craftsmanship is rough and the durability is weak. It directly affects the service life and function of the vacuum pump. Most modern casting processes use resin casting and coated sand casting processes, which also led to a substantial increase in the price of liquid ring vacuum pump castings. In addition, due to resin casting and coated sand casting processes, smoke treatment equipment must be installed, which will prevent sand and dust. For effective treatment of, smoke, etc., environmental issues must be strictly controlled. Therefore, the investment cost of these two casting processes is further increased. Then it also affected the casting price of the liquid ring vacuum pump. At present, the most environmentally friendly casting method can be fully automatic vacuum casting, but the investment cost is greater.

The relationship between different casting processes and prices of liquid ring vacuum pumps

What factors affect the price of liquid ring vacuum pumps

The use and demand of liquid ring vacuum pumps in many industries are increasing, and there are more and more manufacturers of production equipment, which leads to the uneven price of equipment. We will investigate from many aspects when we are purchasing. When buying, you still care about the price of the equipment. What are the factors that affect the price of the equipment?

1. Regionality. At present, most domestic products are facing the dilemma of having parts but no technology, and having technology but no parts. Because of the regional problems of raw materials, the price of liquid ring vacuum pumps is uneven.

2. The pump body is made of nodular cast iron and gray cast iron. Nodular cast iron has spheroidal graphite through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially plasticity and toughness, so that it has higher strength than carbon steel. Nodular cast iron is a high-strength cast iron material developed in the 1950s. Its comprehensive properties are close to steel. It is based on its excellent properties that it has been successfully used to cast some complex forces, strength, toughness, and wear resistance. Highly demanding parts.

3. Technical content of liquid ring vacuum pump. As we all know, the degree of technological maturity and high-standard processing and production equipment have an impact on the stability of the performance, reliability and life of the products.

4. The quality of accessories. The equipment is mainly composed of filters, marbles, exhaust hoods and other accessories. The quality of these accessories directly affects its price.

The above conditions are the reasons that affect the price of liquid ring vacuum pumps. Because of the differences in the geographical, material, technical content and accessories of different manufacturers, the same product has different prices. Don’t blindly pursue price when making purchases. The quality of the product is the focus of our choice. In order to avoid problems during use, we should first consider quality when making a choice.

liquid ring vacuum pumps

Liquid ring vacuum pump for too much power consumption of reasons

⑴ The direction of rotation is wrong
Solution: Check the direction of rotation.

⑵The impeller is damaged
Solution: Check the impeller and replace it as required.

⑶ Rotating parts are seized
Solution: Check whether the clearance of internal wear parts is normal.

⑷Bent shaft
Solution: Straighten the shaft or replace it as required.

⑸The speed is too high
Solution: Check the winding voltage of the motor or the steam pressure delivered to the turbine.

⑹The water head is lower than the rated value. Pumping too much liquid
Solution: Consult the manufacturer. Install the throttle valve and cut the impeller.

⑺The liquid is heavier than expected
Solution: Check the specific gravity and viscosity.

⑻The stuffing box is not properly packed (the stuffing is insufficient, not properly stuffed or running-in, the stuffing is too tight)
Solution: Check the packing and refill the stuffing box.

⑼Improper bearing lubrication or bearing wear
Solution: Check and replace as required.

⑽The running clearance between the wear rings is incorrect
Solution: Check whether the gap is correct. Replace the wear ring of the liquid ring vacuum pump casing and/or impeller as required.

⑾The stress of the pipe on the liquid ring vacuum pump casing is too large
Solution: Eliminate the stress and consult the manufacturer’s representative. After removing the stress, check the alignment.

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