• 152024-11

  How should we protect the fire pump?

  It is necessary to prevent the damage of the fire pump in the maintenance to extend the service life, and naturally save money for us. In order to save costs, our daily maintenance can be like this. 1. Check whether the oil level is normal. It cannot reach the oil mark line on the normal surface. If not, we must replenish it in time, but remember one thing, it cannot exceed the amount of the oil indicator line. 2. Check the radiator, the water is appropriate, if it is not added in time, the requirement of adding water is preferably clean water, as long as it is clean water, or the water is tap water. Why not use groundwater, because the impurities in the groundwater can easily form scale in the water tank, which will affect the cooling effect and is also prone to failure. In winter, we drive to preheat the car, add coolant to the car, and the fire pump is no exception. The weather in the north is very cold. It is best to add the coolant temperature to the fire pump according to the actual temperature. 3. Check the installation of each part of the fire...

• 082024-11

  What are the advantages of non-negative pressure water supply equipment?

  Non-negative pressure water supply equipment is a very unfamiliar term for many people, but in the current municipal water supply project, it has a wide range of uses and is also widely used. It is a new type of controllable secondary pressurized water supply equipment. Compared with traditional municipal water supply, this equipment is more convenient, more technical, and more reliable. Of course, there are good and bad non-negative pressure products on the market, and everyone should choose a regular non-negative pressure equipment manufacturer. Today, our pump expert from hrzl Manufacturing Co., Ltd. will briefly explain to you what are the advantages of non-negative pressure water supply equipment? The core of non-negative pressure water supply equipment is to prevent the generation of negative pressure and the instability caused by it, so as to ensure the normal operation of the system. Of course, it is important to have scientific basis, and it is more procedural and accurate in operation and execution, so as to ensure the stability of the entire water supply system, so as to ensure the safety, stability and sustainability of municipal water supply projects, and reduce the shortage of water supply caused by pipeline maintenance and pipeline failure....

• 052024-11

  Application scope, working conditions and characteristics of multistage pumps

  Single-stage single-suction centrifugal pumps are commonly used centrifugal pumps. Although their flow range is relatively wide, their head cannot reach a high level. In places where high head is required, multi-stage pumps must be used to meet customer requirements. The head of a multi-stage pump is several times that of a single-stage pump. Today, our pump experts from HRZL Pump Manufacturing Co., Ltd. will briefly explain the use range, working conditions and characteristics of multi-stage pumps. 1. Scope of use of multistage pumps Multistage pumps are generally suitable for constant pressure, variable frequency water supply, fire fighting, and sprinkler water in high-rise buildings such as residential areas, hotels, and buildings; they can also be used for water supply equipment such as water supply pumps, pressure-stabilizing pumps, circulation pumps, remote delivery pumps, and boiler water supply in chemical plant cooling towers. The liquid that can be delivered is clean water at room temperature (less than 80 degrees Celsius) (hot water type can deliver medium with a temperature less than 105 degrees Celsius) or a room temperature medium with physical and chemical properties similar to water. 2. Working conditions of multistage pumps  （1） The medium used should be similar to water, with...

• 312024-10

  What are the advantages of multistage centrifugal pumps in industry applications?

  Do you know what benefits multistage centrifugal pumps have in engineering operations? The biggest difference between multistage centrifugal pumps and single-stage pumps is that multistage pumps have more impellers, so they can absorb and pressurize water in stages and in multiple stages, and can also lift water to a higher position under pressure, so multistage centrifugal pumps can be applied to more production fields. So, what are the specific advantages of multistage centrifugal pumps? Energy-saving and scientific Low energy consumption multistage centrifugal pumps use computational fluid dynamics to calculate and analyze the pressure distribution and velocity distribution relationship inside the multistage pump. Correspondingly, they can design more reasonable flow channel design schemes and optimize them according to the specific data analysis results, which can not only ensure the hydraulic shape of the pump, but also significantly improve the pump efficiency. Easy to operate The pipeline layout of the multistage centrifugal pump adopts a vertical pipeline structure, so the inlet and outlet installation positions of the pump can be installed in any position with a pipeline like a valve installation, and there is no need to worry about the direction and angle during installation. This installation method is more conducive to...

• 292024-10

  What are the reasons why the water pump cannot pump water?

  1. Check whether the valve at the water pump inlet is open. If not, please open it. Is there water at the inlet? Is it blocked by foreign matter? If there is no water, the water tank is missing, and replenishing the water can take care of it. 2. When starting up for the first time, the water pump needs to be drained. 3. Check whether it is reversed. If the water pump cannot pump water when it is reversed, you can adjust the water pump to rotate forward (clockwise to forward). If it is controlled by a frequency converter, check manually and automatically. 4. Check whether the outlet pipe is blocked. 5. Assuming that everything above is normal, take a look at the head on the nameplate of the Shenyang water pump. If there is water coming out, but the pressure cannot be reached, please close the outlet main valve first, start the water pump, and see if the pressure can reach or exceed the set pressure, and try one by one. If the set pressure can be reached or exceeded, start N-1 pumps (N is the number of pumps), slowly open the main valve, and stop rotating when...

• 272024-10

  Installation and use precautions for deep well submersible pumps

    Before installing the deep well pump, check whether the power supply voltage meets the specified use standards of the deep well pump, whether the water well depth and water well diameter meet the use conditions specified by the selected product, and whether the water quality is clear water. If the water quality is poor and contains particles and other debris, it cannot be used.   The diameter of the deep well should be slightly larger than the outer diameter of the deep well pump unit. At the same time, the actual depth of the water well should be measured before installation to determine whether it meets the installation conditions of the deep well pump.   Check whether the well platform is suitable for installing the manhole cover and whether it can bear the weight of the deep well pump unit and the matching outlet pipe.   Check whether the deep well pump unit is well assembled. Remove the filter of the deep well pump before installation and check the rotation of the pump shaft of the deep well pump. If it is stuck, it is prohibited to use it.   Use a multimeter to check whether the three-phase wires...

• 252024-10

  How to extend the service life of the sewage pump?

  It is forbidden to start the machine with abnormal power supply voltage. Since the low-voltage power supply line is relatively long, it is common for the voltage at the end of the line to be too low. When the phase voltage is lower than 198 volts and the line voltage is lower than 342 volts, the speed of the sewage pump motor decreases. When it does not reach 70% of the rated speed, the starting centrifugal switch will be closed, causing the starting winding to be energized for a long time and heat up or even burn the winding and capacitor. On the contrary, excessive voltage causes the motor to overheat and burn the winding. Therefore, when the sewage pump is in operation, the operator must observe the power supply voltage value at any time. If it is lower than the rated voltage by less than 10% and higher than the rated voltage by more than 10%, the motor should be stopped to find out the cause and troubleshoot.   Confirm the correct direction of rotation of the motor. The direction of rotation of the motor should be clear. Now there are many types of sewage pumps that can discharge...

• 152024-10

  Why is the submersible pump not pumping water due to too high current?

  Submersible pumps are easy to use and have low installation costs, and are widely welcomed by users. Although submersible pumps are easy to use, they often have operating problems. What is the reason why the submersible pump current is too high and does not supply water? (I) Cut off the power supply and pull the submersible pump out of the water to the shore. Check whether the impeller is entangled or stuck by foreign objects. The motor cannot rotate and the current increases, causing heat. (ii) If there is no foreign matter entangled, check whether the impeller rotates smoothly. (It is impossible for the impeller of a submersible pump to rotate multiple times as smoothly as a general motor by adding force. The submersible pump can rotate as long as the seal is tight. (iii) If it cannot rotate even after being rotated, it is likely that the rotor bearing is damaged. If the motor rotor is swept, the bearing should be replaced, and both bearings should be replaced at the same time. (iv) Open the junction box to check whether the three motor lead wires are firmly pressed, and then use the multimeter ohm RX1 gear to measure whether...

• 152024-10

  In what industries can multistage centrifugal pipeline pumps be used?

  What industries can multistage centrifugal pipeline pumps be applied to? Multistage centrifugal pipeline pumps are a commonly used industrial equipment for conveying liquids or gases. It transports fluids from one place to another by centrifugal force. Multistage centrifugal pipeline pumps usually consist of multiple centrifugal stages, each of which contains a centrifugal rotor and a guide vane. The following is an introduction to the uses of multistage centrifugal pipeline pumps. Industrial use: Multistage centrifugal pipeline pumps are widely used in the industrial field to transport various liquids and gases, such as clean water, wastewater, petroleum, chemical liquids, etc. They can be used in the fields of petrochemicals, pharmaceuticals, food processing, energy, etc. to transport raw materials, products and waste. Water treatment: Multistage centrifugal pipeline pumps play an important role in water treatment systems. They can be used for processes such as water supply, water pressure, drainage and sewage treatment. For example, in urban water supply systems, they are able to transport water from the water source to the water treatment plant, and then distribute the treated water to various users. Construction industry: Multistage centrifugal pipeline pumps are also widely used in the construction industry. They can be used to supply...

• 012023-11

  How to solve the problem of service life of sewage contamination sumbersible pump

  Shandong Hairui Zhonglian Pump Industry Co. , ltd. The sumbersible pump that is a major produces manufacturer. When type selecting of client sumbersible pump, manufacturer of my company water pump can provide the before-sales service such as price of sumbersible pump model, sumbersible pump, in order to offer client reference, and manufacturer of my water pump can provide the service of product of custom-built pump industry for the client. This product information is about how solving the knowledge of service life of sewage contamination sumbersible pump: In urban construction, excavate foundation, complementary when burying subterranean conduit, underground gives water is the problem that be the first to be affected should solve, and the key that solves a problem should use water pump to take out water and mud smoothly from underground namely, general clear water sumbersible pump cannot complete this project quite, because the water below roadbed contains a lot of silt, it can block the impeller of water pump and guide to water pump electric machinery burned-out, so it must use sewage contamination sumbersible pump to finish the job of this pump water. Market is at present genteel the sewage contamination of travelSumbersible pumpUsing went up to bring many...