zgpumpvalve

 After determining the design flow and design head of the pump station, the relevant technical charts can be used to determine the pump specifications and models. The method of pump selection is as follows: 1. Use the pump selection table to select the pump type According to the determined design head and design flow, in the selection table, the horizontal meter head finds the head value that is consistent or close to the design head; then finds the flow value consistent or close to the design flow in the vertical meter head, Intersect horizontally and horizontally in a small square, it marks the model of the pump, and the pump model is initially selected. But sometimes it appears that both pump types meet the design requirements. At this time, you can compare the two pump types, perform technical and economic analysis, and then select one of the appropriate pump types. This method of selecting a water pump is relatively simple and fast. 2. Use pump performance comprehensive type s...

  3. Vacuum water tank filling method For small pumping stations without bottom valves, the vacuum water tank filling method can be used. The vacuum water tank is a closed water tank made of iron sheet welding. Its volume is at least 3 times the volume of the inlet pipe. The location of the water tank should be as close as possible to the pump, and the bottom height of the water tank should also be slightly lower than the axis of the pump. The height of the vacuum water tank is generally twice the diameter of the water tank. Before starting the pump, fill the water tank with water to seal it. After the water pump is started, the water pump enters the water from the vacuum tank. As the water level of the water tank drops, a certain vacuum is formed in the water tank. The water in the water tank will enter the water tank through the water inlet pipe under the action of atmospheric pressure, thereby forming a water circulation. The  centrifugal pump  starts to operate normal...

Centrifugal pumps  (except self-priming pumps) must be filled with water before the start of the pump and the inlet pipe, otherwise, the pump will not work. After the centrifugal pump is started, there is no water, often because the air in the pump is not exhausted and the water is not filled. There are two main methods of filling water before starting: one is to use an assembled bottom valve to fill the water. The bottom valve is a one-way valve installed at the inlet of the inlet pipe. The disadvantage of this method is that the head of the bottom valve has a large loss of water, which affects The efficiency of the pump device; the other is to fill the water without a bottom valve. The biggest advantage of this method is energy saving. Compared with the pump station with a bottom valve, it can save 10% to 15% energy. Several water filling methods for centrifugal pumps are introduced below for users to choose when running the pump. 1. Self-inducing water filling method For ...

First of all, we must understand the causes of  chemical pump  corrosion. For the classification of corrosion, there are generally two classification methods, one is based on the mechanism of corrosion, and the other is based on the cause and appearance of corrosion. According to the mechanism of corrosion, it can be divided into electrochemical corrosion and chemical corrosion. Electrochemical corrosion mainly refers to the occurrence of corrosion due to the surface electrode reaction that occurs after the metal material comes into contact with the electrolyte solution. This reaction is generally a redox reaction, and the main factors are the humidity and temperature of the environment; Chemical corrosion refers to the strong chemical reaction between the metal surface and the surrounding medium, which will cause certain damage to the metal. The main reasons for this corrosion are high temperature and dry environment. According to the appearance and cause of the corrosion,...

Firstly, preparation before maintenance of  slurry pump : 1. Grasp the operation of the pump and prepare the necessary drawings and materials. 2. Prepare maintenance tools, measuring tools, lifting tools, accessories, and materials. 3. Cut off the power supply and the connection between the equipment and the system, discharge the medium in the pump, and meet the conditions for safe maintenance. Second, maintenance content of slurry pump: 1. Check the coupling and alignment, and whether any bolts are loose. 2. Clean the oil chamber and bearings, and check the clearance between the outer rings of the bearing rollers, and replace qualified lubricants. 3. Check the wear and tear of the overcurrent parts of the slurry pump to see if it needs to be replaced. 4. Check the wear, cavitation and erosion of various parts, and repair or replace if necessary. 5. Check the bearings and replace them if necessary. 6. Check the bending of the shaft, measure, and adjust the ax...

9. Supporting power motor overheating 　　 The first reason is the reason for the power supply: the  slurry pump  voltage is too high or too low. Under a specific load, if the voltage fluctuation range should be outside +10% to -5% of the rated value, it will cause the motor to overheat; the three-phase voltage of the power supply Asymmetry, the unbalance degree of the three-phase power voltage of the power supply exceeds 5%, which will lead to overheating of the winding; lack of phase operation, experience shows that more than 85% of agricultural motors are burned due to lack of phase operation, and the lack of phase protection device should be installed on the motor. The second reason is the reason for the water pump: the power is not matched, the small horse-drawn cart, the motor is overloaded for a long time, and the motor temperature is too high; the motor is started too frequently, and the motor is rated for short-term or intermittent work. The number of start-ups sho...

Congratulations: Our two series of products have passed CE certification. After hard work, the company's DJ type propeller series products and ZLX vertical submerged slurry pump series products have obtained CE certification. The “CE” mark is a safety certification mark and is regarded as a passport that the manufacturer opens and enters the European market. CE stands for CONFORMITE EUROPEENNE. Products bearing the "CE" mark can be sold in EU member states without meeting the requirements of each member state, thus realizing the free circulation of goods within the EU member states. At the same time, products sold in the EU must be marked with a “CE” mark to indicate that the product meets the basic requirements of the EU Directive on Technology Coordination and Standardization. This is a mandatory requirement for products in EU law. According to this, 10 sets of DJ propellers and 31 sets of ZLX vertical submerged slurry pumps signed by our company and Turkish cu...