2018/11/21

Construction Project Environmental Impact Report

Regarding the environmental impact report for the construction project of Yutong Pump Industry Co., Ltd.

2017/08/30

How should a high-temperature submersible pump be maintained after it stops running?

Even the best water pump will not achieve higher efficiency without maintenance. Therefore, some basic requirements must be observed when using high-temperature submersible pumps. Below, Yutong Pump Industry introduces the requirements after the submersible pump stops running. 1. After the centrifugal pump stops running, the pump's inlet valve should be closed, and the valves of the auxiliary system should be closed in sequence after the pump cools down. 2. The high-temperature pump should be stopped according to the provisions of the equipment technical documents. After stopping, the pump should be rotated half a circle every 20-30 minutes until the pump body temperature drops to 50℃. 3. When the low-temperature pump is stopped, the pump should always be filled with liquid unless otherwise specified.

2017/08/30

How to deal with the overheating phenomenon of vane vacuum pump motor?

Rotary vane vacuum pumps are prone to motor overheating during prolonged use. How can we address this issue? First, let's understand the causes of vacuum pump motor overheating. Common causes include excessive water supply leading to motor overload; motor phase loss; blocked exhaust ports; and impeller dragging other components. Common solutions include: reducing the water supply to the normal range (refer to the pump's operating instructions for liquid supply); checking the wiring for firmness; checking the exhaust port; and opening the pump cover to adjust the clearance between the impeller and other components. Yutong Pump Industry

2017/08/30

Several tips to promote energy saving and consumption reduction of submersible pumps

Energy conservation and emission reduction is a theme advocated in modern times. So, how can energy-saving requirements be met in the installation and use of submersible pumps? Longmai Pump Industry shares the following based on its years of production and R&D experience. 1. Install the pump at an angle and reduce elbows. Install the submersible pump at an angle or turn the volute so that the outlet is directly facing the water pool. 2. Shorten the pipeline. Removing 1 meter of steel pipe can save 0.21 kg of diesel in 10 hours. 3. Increase the diameter of the outlet pipe. Replacing a 4-meter-long 10cm outlet hose with a 15cm pipe can save 0.5 kg of diesel in 10 hours. 4. If the water intake can remain clean, the filter can be removed.

2017/08/30

Special reliability design of submersible pump impeller

The submersible pump impeller shall be made of high-quality HT250 cast iron. The impeller shall adopt a computer-optimized hydrodynamic model with a large passage and no blockage to ensure that the flow rate and head at the user's design point operate at a high efficiency point. The matching between the impeller and the sealing ring is reasonable, and the gap is uniform. After surface treatment, the impeller flow passage blades are also treated with an anti-corrosion coating, with a coating thickness of more than 300um. Before assembly, the impeller shall undergo a static and dynamic balance test, and its unbalance shall be within the allowable range, with a balance accuracy of no less than G6.3 grade. The impeller shall be firmly fixed on the shaft with a key, and the impeller and shaft shall adopt an internal locking device. The impeller and pump body shall be ...

2017/08/30

How should vacuum pumps be maintained and serviced in the spring?

Vacuum pumps, with proper maintenance and care during use, can effectively extend their lifespan. Below, Yutong Pump Industry introduces some commonly used techniques for vacuum pump operation. (1) Regularly check if all bolts on the vacuum pump are loose, if there are any air leaks in the suction pipe, if the tightness of the packing seal is appropriate, if there are any leaks from the packing seal, and if there are any frictional noises or other unusual sounds from the rotating parts. If any of these issues are found, the machine should be stopped for repair or parts replacement. (2) The water should be free of sand and debris. (3) If hard water is used as the working fluid, the water must be softened or the pump should be regularly flushed with a solvent. Generally, 1

2017/08/30

What protective measures should be taken before starting a submersible pump?

Yutong Pump Industry specializes in the production of submersible pumps. The following protective measures should be provided during the use of submersible pumps. Before starting the submersible pump, a qualified electrician should inspect the system to ensure the electrical protection measures required by the following items. 1. The power supply device should be safe, reliable, and normal. The power supply voltage and frequency should meet the regulations (voltage is 380V ±5%, frequency is 50Hz ±1%), and the instantaneous voltage overshoot should not exceed 10%. If the distance between the power supply and the water pump is far, the cross-sectional area of the cable should be increased, and the number of joints should be as few as possible, otherwise the voltage will drop too much, and the cable should be

2017/08/30

Analyze the main differences between submersible pumps and centrifugal pumps

Yutong Pump Industry specializes in the production of various pump products, including submersible pumps and centrifugal pumps. Submersible pumps and centrifugal pumps are widely used pump valve products in our daily lives. Yutong Pump Industry introduces the differences between these two types of pumps as follows. (1) Submersible pumps and centrifugal pumps have different working principles. Working principle of submersible pump: Before starting the pump, the suction pipe and the inside of the pump must be filled with liquid. Before starting the pump, the suction pipe and the inside of the pump must be filled with liquid. After starting the pump, the impeller rotates at high speed, and the liquid inside rotates with the blades. Under the action of centrifugal force, it is ejected from the impeller. The ejected liquid gradually slows down in the diffuser of the pump casing, and the pressure gradually...

2017/08/30

Maintenance of gear pumps during operation

Reasonable maintenance of gear pumps during operation can ensure their long-term, stable, and efficient operation. Several important maintenance tasks should be performed during the operation of gear pumps. The following is a detailed explanation provided by Yutong Pump Industry. 1. Startup: (1) Check the sealing of all pipeline flanges and joints before starting. (2) Rotate the coupling to ensure there are no friction or collision sounds. (3) For the first startup, inject the conveying liquid into the pump. (4) Before starting, fully open the valves in the suction and discharge pipelines. Starting with closed valves is strictly prohibited. (5) Verify the motor rotation direction before starting the motor. 2.

2017/08/30

The difference between slurry pumps and centrifugal pumps

Slurry pumps and centrifugal pumps are two very common pump products. Here, Yutong Pump Industry will explain the difference between slurry pumps and centrifugal pumps. When it comes to slurry pumps, we have to mention centrifugal pumps. Here, we will systematically introduce their relationship. There are many types of pumps, which can be divided into dozens of categories from different perspectives. Centrifugal pumps are classified according to their working principle. They increase the pressure of the transported medium through centrifugal force. Other common types include screw principle and plunger principle, which can be classified into pumps different from the centrifugal principle. After talking about the concept of centrifugal pumps, let's talk about slurry pumps. Slurry pumps are a type of pump that is specifically designed to transport slurries.