• 282024-11

  How to control the cleaning effect of high-pressure cleaning pump on pipelines?

    As we all know, factory pipelines need to be cleaned regularly after long-term use, otherwise their use effect cannot be guaranteed and their service life will be shortened. We can use high-pressure cleaning pumps to clean pipelines, and of course relevant cleaning techniques are also very important.   When cleaning relatively straight pipelines, high-pressure cleaning pumps usually adopt a top-down cleaning method, using a suspended high-pressure cleaning machine to lower the cleaning method from the upper end of the vertical pipeline. Due to the lack of effective support during the cleaning process, the positioning problem of the cleaning equipment in the vertical pipeline and the stability during movement should be paid special attention and handled.   This should pay attention to observing the cleaning action of the equipment in the vertical pipeline, and take corresponding posture adjustments in time to ensure reasonable operation and effectively improve the cleaning effect. If the high-pressure cleaning pump cleans a flat pipeline, it should adopt a step-by-step method and perform cleaning work in the longitudinal direction of the pipeline by pushing.   To operate reasonably and keep the cleaning process continuous, the key to the rationality of the high-pressure cleaning machine design will...

• 262024-11

  Explanation of slurry pump performance parameters

  1.Head: The energy obtained by a unit weight of liquid after passing through the pump. Its value is equal to the algebraic difference between the total head at the pump outlet and the total head at the pump inlet. 2.Flow rate: The amount of liquid discharged by the pump per unit time. 3.Speed: The speed of the pump refers to the number of revolutions per minute of the pump shaft. 4.Slurry pump shaft power: The power required by the prime mover to drive the slurry pump. 5.Pump effective power: The product of the weight flow rate of the slurry pumped by the slurry pump and the head. 6.Efficiency: The ratio of effective power to shaft power. 7.NPSH: The surplus energy of a unit weight of liquid at the pump suction port that exceeds the vaporization pressure.

• 242024-11

  How to maintain and disassemble a self-priming pump

  The characteristics of the self-priming pump are simple and reliable structure, durability, and it is widely used in industrial production. Under normal circumstances, we generally do not need to disassemble and maintain the self-priming pump frequently, but when a fault is found, we need to solve it at any time. The following Taiheda editor shares with you the maintenance method of the self-priming pump and the order of disassembly and assembly of the self-priming pump. 1. Maintenance method of self-priming pump 1. Maintenance of rolling bearings. When the self-priming pump has been working for a long time, its bearings are worn to a certain extent, and new bearings must be replaced. 2. Maintenance of front and rear sealing rings. When the sealing rings are worn to a certain extent, we also need to replace new sealing rings. 3. Maintenance of mechanical seals. In the state where the mechanical seal does not leak, we generally should not disassemble and inspect it. If there is a leak at the lower end of the self-priming pump bearing body or a serious leak occurs, we should disassemble and inspect the mechanical seal. When installing and disassembling the mechanical seal, we must take it lightly...

• 222024-11

  Classification of corrosion-resistant submersible pumps

  The classification of corrosion-resistant submersible pumps cannot be classified by their working principle and purpose, otherwise it will be very messy. The purpose is the purpose, the principle is the principle, and pumps with different principles can be used for the same purpose. The same pump can also be used in different occasions and for different purposes. For example: a mixed flow pump is a diagonal flow pump, which uses a mixed flow impeller, that is, the direction in which the liquid flows out of the impeller is inclined to the axis. The axial flow pump has a liquid outflow direction parallel to the axis. Its classification mainly includes chemical pumps, magnetic pumps, centrifugal pumps, sewage pumps, self-priming pumps, oil pumps, diaphragm pumps, screw pumps, gear oil pumps, shielded pumps, submersible pumps, gear pumps, pipeline pumps, corrosion-resistant pumps, acid-resistant pumps, multistage pumps, stainless steel pumps, submersible pumps, etc. The parts of the submersible pump that come into contact with the medium are made of phenolic glass fiber modified by polyvinyl butyral and molded by high-temperature compression molding. The connecting pipe and the liquid outlet pipe are made of phenolic glass fiber pipes made by semi-dry rolling process. The impeller sleeve...

• 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...