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Are you looking for a comprehensive guide on positive displacement slurry pumps? Look no further! In this article, we will delve into everything you need to know about these powerful and efficient pumps. From how they work to their various applications, we've got you covered. Whether you're a seasoned professional or just starting out in the world of slurry pumping, this article is sure to provide valuable insights and information. Dive in and learn all about positive displacement slurry pumps!
Positive Displacement Slurry Pump: A Comprehensive Guide by CNSME PUMP

to Positive Displacement Slurry Pump

In the world of industrial pumping, the positive displacement slurry pump is a crucial piece of equipment that is responsible for handling abrasive and viscous fluids. These pumps are designed to efficiently transport slurry, which is a mixture of solid particles and liquid, in various industries including mining, construction, and wastewater treatment. At CNSME PUMP, we specialize in manufacturing high-quality positive displacement slurry pumps that are known for their reliability and durability.

Understanding How Positive Displacement Slurry Pumps Work

Unlike centrifugal pumps that rely on kinetic energy to move fluids, positive displacement pumps work by trapping a fixed amount of fluid and then displacing it into a discharge pipe. This results in a constant flow rate regardless of changes in pressure or viscosity. In the case of slurry pumps, the abrasive nature of the slurry can cause wear and tear on the pump components. However, at CNSME PUMP, our pumps are designed to withstand the harsh conditions of slurry pumping and deliver superior performance.

Key Features of CNSME PUMP Positive Displacement Slurry Pumps

CNSME PUMP positive displacement slurry pumps are engineered with precision and attention to detail to ensure optimal performance in challenging environments. Some of the key features of our pumps include:

1. Robust Construction: Our pumps are built with high-quality materials such as hardened steel and ceramic to withstand abrasion and corrosion.

2. Seal Options: We offer a variety of sealing options to suit different applications, including mechanical seals and gland packing.

3. Adjustable Impeller Clearance: Our pumps feature an adjustable impeller clearance mechanism that allows for easy maintenance and customization.

4. High Efficiency: With a focus on energy efficiency, our pumps are designed to minimize power consumption and operating costs.

5. Diverse Application: Our positive displacement slurry pumps are suitable for a wide range of applications, from mining and dredging to chemical processing and wastewater treatment.

Benefits of Using CNSME PUMP Positive Displacement Slurry Pumps

When you choose CNSME PUMP positive displacement slurry pumps for your pumping needs, you can expect a range of benefits, including:

- Increased reliability and uptime due to the durable construction of our pumps.

- Improved efficiency and reduced maintenance costs thanks to our innovative design features.

- Enhanced performance in handling abrasive and viscous fluids, ensuring consistent pumping operation.

- Customization options to meet specific requirements and application needs.

- Exceptional customer support and technical assistance from our team of experts.

In conclusion, positive displacement slurry pumps play a critical role in various industries where the handling of abrasive fluids is necessary. At CNSME PUMP, we take pride in manufacturing top-of-the-line positive displacement slurry pumps that are trusted by our customers worldwide. With our commitment to quality, innovation, and customer satisfaction, you can rely on CNSME PUMP for all your slurry pumping needs. Contact us today to learn more about our products and services.

ConclusionIn conclusion, the positive displacement slurry pump is a crucial piece of equipment in various industries, including mining, wastewater treatment, and oil and gas. With 20 years of experience in the industry, our company understands the importance of choosing the right pump for the job to ensure maximum efficiency and performance. By investing in a high-quality positive displacement slurry pump, businesses can minimize downtime, reduce maintenance costs, and improve overall productivity. Contact us today to learn more about how our expertise and top-of-the-line pumps can benefit your operations.

A collection of common problems with slurry pumps for customers to read. CNSME Slurry Pump Company has received feedback from customers before asking our technicians what issues should be paid attention to when using slurry pumps?In fact, slurry pumps are suitable for a variety of complex working conditions. The working characteristics of slurry pumps are that the slurry processed mostly contains various solid particles, which requires us to know more about the precautions for use in daily operations. Today we will talk about the precautions for use of slurry pump ore dressing.1. Maintenance of shaft seals for slurry pump ore dressing. The shaft seal pump should regularly check the seal water pressure and water volume when dressing the slurry pump, and always keep a small amount of clean water flowing along the axis. Regularly adjust the filler gland, check the filler and replace the filler regularly. The shaft seal water pressure and the shaft seal water volume should meet the above requirements (shaft seal inspection).For secondary impeller shaft sealing pumps equipped with oil cups, oil should be regularly filled with oil cups to lubricate the internal filler or lip sealing ring.2. Adjustment of impeller for slurry pump ore dressing　In order to ensure the pump operation, the gap between the impeller and the front guard plate must be adjusted in time. The gap between the metal-lined pump impeller and the front guard plate is between 0.5-1mm, and the gap between the rubber-lined pump impeller and the front and rear sheath must be equal.3. Use bearing lubrication when slurry pump ore dressing. When slurry pump ore dressing, the operating life will be longer if the assembly is correct, the lubricating oil is appropriate, and the maintenance is timely. Maintenance personnel should regularly inspect the bearing components and check the conditions of bearings and greases. The maintenance interval generally does not exceed 12 months.Slurry pumps are widely used in important basic departments such as mining, metallurgy, coal, hydraulics and transportation. During the process of transporting solid-liquid mixtures such as slurry, cinders and mud, they are impacted by solid particles, and their overflow parts cause severe wear, resulting in a shortening of the service life of the slurry pump and affecting the normal operation of the equipment.Therefore, reducing the wear of the slurry pump overflow parts is the key in actual production.Generally, in practical applications, the main measures to reduce the wear of the slurry pump overflow parts are as follows: 1) Use reasonable impeller geometric parameters: In order to meet the required head and reduce wear, a larger blade inlet diameter and outlet width are selected, which reduces the relative speed at the inlet of the impeller, reduces the wear of the impeller, and prevents blockage.2) Reasonable matching of volute shell and impeller: If the shape of the slurry pump volute shell is unreasonable, it will accelerate wear. When designing, you should consider matching with the impeller. While meeting the pump performance, try to keep the liquid flow rate in the volute as small as possible, otherwise the wear will be very serious.3) Reasonable selection of materials for considering the characteristics of the medium: The service life of the slurry pump is largely related to whether the selected material is appropriate.During the material selection process, the geometry and particle size of the solid particles in the slurry should be fully considered. If the solid particles are small and have regular shapes, the particles are evenly distributed and there are no sharp sharp objects, non-metallic materials such as rubber and engineering plastics can be selected to ensure good wear resistance while also reducing costs.When the geometry of solid particles in the slurry is extremely irregular and the particle size composition is widely distributed, materials with high hardness and good wear resistance should be selected, such as hard nickel and high chromium cast iron materials, because such materials have certain advantages in resisting the wear of solid particles in the slurry.4) Adopting a reasonable anti-wear structure: Adopting a reasonable structure is an effective way to slow down the wear of the slurry pump.For example, setting up linings, thickening bushings and impellers, setting up secondary blades and secondary impellers can also reduce wear.There are three functions of cooling water in the slurry pump, namely cooling, cleaning, and lubrication and maintenance.So how to grasp the cooling water usage in the slurry pump?The cooling water usage of slurry pump is affected by the machine seal type, pump type, and pump pressure factors. Let’s talk about the rules and reasons of the influence of these three factors: 1. Mechanical seal of slurry pump. There is a mechanical seal of slurry pump. In this case, there is no need to add cooling water.Both internal flushing mechanical seals and external flushing machine seals require cooling water with a slurry pump.2. Slurry pump type factors The amount of cooling water for the slurry pump gradually increases as the pump type increases, that is, the larger the pump type, the greater the cooling water for the slurry pump.3. Slurry pump pressure factors The greater the pump pressure, the greater the cooling water used in the slurry pump, which is proportional to the pressure.In view of the above three situations, the cooling water consumption of the slurry pump is affected by the pump parameters. The specific usage reference table is too complicated and will not be listed one by one here. If you have any specific questions, please contact our customer service for you. Of course, if there are other knowledge that slurry pumps want to know, you are welcome to call and we will answer them one by one!

　　Compilation of common problems of submersible slurry pumps　　With the rapid development of the mining and sand extraction industry, the demand for supporting sand extraction equipment has been relaxed.Fresh sand and reservoir tail sand ore are commonly treated in a relatively central manner.Submersible slurry pumps are equipment suitable for sand ore with various industrial and mining conditions and for sand mining needs in different river channels.The submersible slurry pumps we often use often have some small problems that we have a headache about. The solution to each problem requires a correct solution. Today, the editor has compiled some measures to deal with common problems that occur in submersible slurry pumps. Let’s learn it together.1. Reasons for not sucking sand: insufficient water infusion, air in the pump cannot be discharged, air leakage in the water suction pipe, and large gap between the front lining plate and the impeller.Solution: Continue to pour water into the diversion, check whether the pipeline is leaking, and adjust the gap between the impeller and the front lining plate.2. Reasons for low water outlet pressure and low flow: air inside the pump, large gap between the impeller and the front lining plate, not tightly closed by the clutch, and wear of the impeller or lining plate.Solution: Empty the gas in the submersible slurry pump, adjust the gap of the clutch friction plate, and replace the impeller or lining plate.3. Causes of fast wear: poor construction environment (large particles), long conveying distance, and long water inlet pipelines.Solution: Replace the sand field, add afterburner units, shorten the length of the water inlet pipe to reduce cavitation.4. Reasons for fast wear of the impeller journal: low head of the high-pressure water pump, dislocation of the pack, and different centers of the pump shaft and the back cover.Daily maintenance of submersible slurry pumps: 1) The bearing water pressure and water volume must meet the regulations. Adjust (or replace) the tightness of the filler at any time, and do not cause shaft seal leakage.And replace the submersible slurry pump shaft sleeve in time.2) When replacing the bearing, it is necessary to ensure that the bearing assembly is free of dust and the lubricating oil is clean. The bearing temperature during the operation of the submersible slurry pump is generally not exceeding 60-650C, and the height is not exceeding 750C. 3) It is necessary to ensure the coaxiality between the motor and the submersible slurry pump, ensure that the elastic pad in the coupling is complete and correct, and should be replaced in time after damage.4) Ensure that the submersible slurry pump components and pipeline systems are installed correctly and firmly and reliably.5) Some parts of the submersible slurry pump are consumable parts. In daily use, pay attention to the loss of consumable parts and repair or replace them in time.During the repair or replacement of consumable parts of the submersible slurry pump, it is necessary to ensure that the assembly is correct and the clearance is adjusted reasonably to avoid the occurrence of tight friction.6) The suction pipeline system of the submersible slurry pump must be free of air leakage, and during operation, you should pay attention to whether the suction port is blocked.The medium required for submersible slurry pumps mostly contain solid particles, so the barrier placed in the pump pool should meet the requirements of the slurry pump to pass through the particles, reducing the possibility of excessively large particles or long fiber materials entering the pump body and causing clogging.

As the \"heart\" of the slurry pump, the impeller is an important part of the pump product, and its main function is to convert energy.When the motor drives the impeller to rotate, the blades in the impeller apply force to the fluid, forcing the fluid to rotate, thereby increasing the pressure potential and kinetic energy of the fluid.This process is the fundamental reason why the slurry pump can deliver liquid.When manufacturing impellers, the impeller can be a cast integral impeller or a fully welded integral impeller according to different application requirements.Due to its high strength and wear resistance, the welding impeller can better adapt to the impact and wear generated during the slurry pump transportation process.The overall impeller design also helps improve pump efficiency, reduce energy consumption and maintenance costs. Generally speaking, the hydraulic performance of the impeller is the decisive factor in the hydraulic performance of the pump. The main reason for pump failure is mainly caused by severe wear of the runner components, and the wear failure of the impeller is relatively common.It is very important for wear and failure analysis. Correct analysis is like finding the root cause of the problem. Therefore, failure analysis of impeller is very important.There are two main reasons for its failure: corrosion wear and abrasive wear.If the material is hit by small and loose moving particles, its surface will be damaged, which is corrosion wear.Generally, the particles should be less than 1mm and the impact speed should not exceed 55om/s.Once the particles exceed this range, it is easy to cause material damage.Abrasive wear refers to the damage to material caused by hard particles or hard concave convexity on the grinding surface during friction.It can be said that this form of slurry pump wear is relatively simple as it does not involve too much or even lubrication and adhesion issues.A failure of the impeller of the slurry pump will cause the equipment to be blocked and even stop running.Therefore, it is necessary to pay attention to the normal use and maintenance of the impeller and conduct corresponding inspections regularly to ensure the smooth operation of the impeller. Maintaining the slurry pump requires frequent inspection of the impeller condition, especially when there is a phenomenon of rapidity and slowness during use, the power should be cut off immediately and checked and maintained.It is also important to maintain proper clearance between the impeller and the guard plate or pump housing, as incorrect clearance can cause liquid leakage in the pump, affecting the performance of the impeller.