Gravel Pump Buying Guide | EDDY Pump

In industries where abrasive materials like rocks, sediment, sand, and gravel need to be moved efficiently, gravel pumps are the answer to the tough task of moving these materials. From mining to dredging to construction, these high-capacity pumps are designed to handle some of the toughest material transfer challenges. They can move large abrasive solids without clogging, so they’re essential in operations where other pumps would fail prematurely.

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But what exactly makes a gravel pump different from a standard centrifugal pump? It’s all in the design. While standard centrifugal pumps may work well with clean water or fine slurry, they are not designed to handle oversized particles or the harsh abrasiveness of gravel and aggregate. A gravel industry pump is purpose-built for high wear resistance, consistent throughput, and clog-free operation under extreme conditions.

As heavy industries evolve, the options for equipment and sourcing models have expanded. One major development is the growing demand for gravel pump rental, which allows businesses to reduce capital expenditure while still accessing high-quality machinery. This guide helps you select the best commercial gravel pump and determines whether buying or renting is the right approach.

Introduction to Heavy-Duty Pumping

Heavy-duty pumping is a critical process in various industries, including mining, construction, and dredging. It involves the use of specialized pumps, such as gravel pumps and dredge pumps, to handle abrasive materials like slurry, sand, and gravel. These pumps are designed to operate in challenging conditions, including high solids content and corrosive environments, and are essential for ensuring optimal performance and minimal downtime. In industries where pumps are required to handle abrasive materials in large volumes, the reliability and energy efficiency of these pumps can significantly impact overall productivity and operational costs. By understanding the importance of heavy-duty pumping and selecting the right equipment, businesses can achieve better performance and reduce the risk of costly downtime.

Understanding Gravel Pump Design and Performance

What Makes a Gravel Pump Unique?

Gravel pumps are not simply more robust versions of slurry pumps; they are precision-engineered systems specifically built to handle highly abrasive, coarse solids under demanding conditions. These dredge pumps are widely used in dredging, aggregate transport, mining operations, and other heavy-duty applications where conventional pumps fail prematurely due to wear and clogging. The design differences lie in the structural components, material selection, and performance optimizations that allow gravel pumps to maintain high throughput while withstanding significant abrasion. Additionally, gravel pumps are versatile and capable of handling different applications, making them suitable for various operating conditions in sand and gravel pumping.

Impeller Design and Material

At the heart of every gravel pump is the impeller, and its design makes all the difference in handling large particles in solid-laden or other fluids. Most industrial gravel pumps feature open or recessed impellers, which allow for the unobstructed flow of rocks, slurry, sand, and gravel without clogging. These impellers are typically constructed from high-chrome alloys or specially hardened cast iron to combat erosion caused by abrasive materials.

Recessed impeller designs are particularly beneficial in minimizing contact with the dredge pump casing, which reduces wear on internal surfaces. This configuration also helps to avoid material buildup inside the pump housing—an issue that can cause severe maintenance cost problems and operational downtime, especially in dredging and aggregate industries.

Suction and Discharge Configurations

Another major distinction is in the design of suction and discharge. Commercial gravel pumps are equipped with oversized suction inlets and discharge nozzles to accommodate higher flow rates and larger particle sizes. These dredge pumps can be further enhanced with dredge attachments such as jet heads or mechanical cutter heads, making them suitable for deep suction applications like river or pond dredging.

Using a suitable hose is crucial for effective suction and discharge. The length and flexibility of the hose can significantly impact the ease of tasks like water changes, and the quality and durability of the hose affect the overall performance of the cleaning system.

The discharge side can be customized based on site-specific factors, such as pumping distance, elevation change, or pipeline routing. Both horizontal and vertical configurations are possible, and each setup impacts the overall system efficiency and dredge pump selection.

Understanding Pump Curves and System Compatibility

For optimal performance, the gravel pump must be carefully matched to the operating conditions using pump curves. These graphs provide insight into how the dredge pump behaves under different flow rates and pressure conditions, helping users select a model that delivers peak energy efficiency without overloading the motor or compromising flow.

Proper interpretation of these curves is vital. Matching the slurry pump to your piping layout, considering factors such as solids velocity, friction losses, and elevation, ensures reliability and long-term operation. Trusted industrial gravel pump manufacturers, like EDDY Pump, provide expert support in analyzing pump curves and customizing systems to match each project’s unique needs.

Key Features to Look for in an Industrial Gravel Pump

Whether you’re evaluating a slurry pump for purchase or considering a gravel pump rental, be sure to assess these essential features:

High-chrome or Hardened Construction

To resist wear from sharp and abrasive particles, your gravel pump should be made of wear-resistant components such as high-chrome iron or abrasion-resistant materials rated for continuous duty. These abrasive materials outperform standard metals by withstanding erosion, reducing maintenance frequency, and extending lifespan.

Modular Design for Easy Maintenance

A breakdown during peak operation can halt entire projects. Look for an industrial gravel pump with modular components and accessible wear parts. Replaceable liners, casings, and impellers make servicing more efficient. Some brands, like EDDY Pump, design their dredge pumps for fast disassembly and in-the-field maintenance. Proper maintenance practices are crucial for extending the lifespan of gravel pumps, ensuring they perform optimally for several years or more.

Solids-Handling Capability

The whole purpose of a commercial gravel pump is to move solids, often very large ones. Check the maximum particle size the slurry pump can pass. For gravel and rock-laden material, a slurry pump should be able to pass solids at least 2 to 4 inches in diameter. Advanced designs can handle even larger and abrasive materials with minimal risk of clogging.

Sealing Systems and Bearing Protection

A good industrial gravel pump also includes seal and bearing systems designed for extreme service conditions. Proper lubrication, such as grease lubrication, is essential for ensuring the efficiency and durability of the slurry pump. Mechanical seals and bearing housings should be robust, lubricated, and protected from the ingress of slurry. Neglecting this detail can significantly shorten pump life.

Pump Components and Spare Parts

EDDY gravel pumps are engineered for extreme durability, with heavy-duty construction and wear-resistant materials used throughout the design. The pump body is built to handle high pressure and abrasive slurries while minimizing maintenance and ensuring a low total cost over time.

Key components like the impeller and volute are made from wear-resistant materials to extend service life in harsh environments. The unique design of the pump reduces clogging and maximizes flow efficiency, offering several advantages over traditional systems.

Proper lubrication is essential to protect bearings and manage internal pressure. EDDY Pump systems feature simplified bearing assemblies and effective lubrication to reduce wear, heat, and breakdowns during demanding construction applications.

From the rugged pump body to seals and liners, each part is optimized for high-pressure, high-solids applications, making EDDY pumps ideal for tough construction and dredging projects. The focus on wear-resistant materials, pressure control, and reliable lubrication ensures consistent performance in the field.

The Rise of Gravel Pump Rentals

Gravel pump rentals are becoming an increasingly popular choice across the construction, mining, and dredging sectors. As industries face tighter budgets, unpredictable project timelines, and changing regulatory landscapes, renting high-performance gravel pumps has become a flexible and cost-effective alternative to ownership.

Why Renting Makes Economic Sense

Purchasing a commercial or industrial gravel pump requires a significant upfront investment, often exceeding $10,000. For companies with fluctuating project demands, this capital expense may not be justifiable. Renting allows you to deploy a gravel pump only when needed, maximizing budget efficiency and freeing up resources for other operational priorities. Additionally, renting can contribute to a low total cost of ownership by reducing maintenance and storage costs.

Gravel pump rental is especially advantageous for seasonal work, such as river dredging, coastal restoration, or aggregate mining during dry months. It also benefits contractors handling diverse jobs who may need different slurry pump configurations for each site. Rather than letting owned equipment sit idle, renting ensures that you’re only paying for what you use.

Another major advantage of gravel pump rental is access to the latest technology. Leading rental providers like EDDY Pump offer a fleet of advanced, well-maintained equipment featuring modern, high-chrome components, energy-efficient motors, and improved solids or large particles handling capabilities. This eliminates the risk of falling behind with outdated equipment and helps improve job site productivity.

Emergency and Disaster Response

When urgent situations strike—such as flooding, storm surges, or mudslides—there’s no time to wait for procurement or long-term installations. Gravel pump rentals offer immediate access to reliable, heavy-duty equipment that can handle high-volume pumping in harsh conditions. Rental fleets are often kept ready for rapid deployment, helping contractors, municipalities, and emergency response teams minimize downtime and quickly restore operations.

Comparing Commercial Gravel Pump Models

Choosing the right commercial gravel pump requires more than selecting the biggest or most powerful unit available. Every project has specific flow, pressure, mobility, and site condition requirements, making it essential to compare models based on performance, drive type, mounting options, and customization capabilities.

Performance and Flow Rates

One of the most critical considerations is the required flow rate and total dynamic head. A dredging operation on a wide river may require upwards of 10,000 gallons per minute (GPM) with a head of 100 feet or more to effectively move sediment over long distances. In contrast, an aggregate wash plant or sand and gravel processing facility may only need 2,000–3,000 GPM with minimal lift requirements. Failing to match these needs can result in inefficient performance, overloading the motor, or unnecessary energy consumption. Always analyze pump curves and consult with experts to select the most efficient gravel pump model for your operational conditions. Additionally, understanding pump efficiency is crucial when selecting pumps for sand and aggregate pumping to ensure optimal performance.

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Power Source and Drive Types

Commercial gravel pumps are available in various power configurations. The most common options include electric motors and diesel engines:

• Diesel-Driven Units: Ideal for remote worksites or temporary dredging operations where grid power is unavailable. These units are self-contained and can be mobilized quickly.
• Electric-Powered Units: Best suited for permanent installations such as processing plants or long-term municipal infrastructure projects. They offer lower operating costs and reduced emissions.

In addition to the power source, the mounting style is another important consideration:

• Trailer-Mounted: Perfect for mobile dredging crews or emergency response teams who require frequent relocation.
• Skid-Mounted: Designed for job sites, barges, or stationary surface-level pumping.
• Submersible Units: These slurry pumps are installed directly into pits or underwater environments, making them ideal for quarry dewatering, tailings ponds, or deep dredging applications.

Customization Options

Top-tier manufacturers like EDDY Pump offer extensive customization to adapt gravel pumps for specific applications. These options may include heavy-duty discharge hoses, advanced control panels, GPS-enabled dredging systems, real-time performance monitoring, and variable-speed drives. These upgrades enhance precision, automate performance tracking, and improve overall operational efficiency.

Additionally, these gravel pumps can be tailored to meet the specific needs of customers, ensuring optimal configurations that minimize costs and boost efficiency in engineering projects.

Real-World Applications Across Industries

Let’s explore some industry-specific use cases where industrial gravel pumps prove invaluable:

• • Aggregates and Sand Mining

  Sand and gravel mines move enormous volumes of material every day. Traditional slurry pumps fail fast due to abrasive wear. A high-chrome gravel pump resists degradation and delivers consistent performance across long distances to wash plants or dewatering stations. Additionally, these slurry pumps are specifically designed for handling abrasive materials, making them ideal for managing high solids content and large particle sizes in sand and gravel mines.

  • Dredging Rivers, Lakes, and Harbors

  In environmental and navigational dredging, sediment often includes large, coarse solids. A commercial gravel pump, deployed via barge, can remove this material efficiently, even in fluctuating water levels and soft-bottom conditions.

  • Tunneling and Foundation Excavation

  When tunneling in urban infrastructure projects, slurry must be evacuated from depths up to 50 feet. A reliable gravel pump keeps excavation zones clean and prevents costly slowdowns.

  • Industrial Waste and Byproduct Management

  Foundries, paper mills, and chemical plants produce abrasive byproducts, such as slag, lime, and grit. An industrial gravel pump effectively transports these materials to containment or treatment zones, reducing manual handling and environmental risk.

• Total Cost of Ownership: Rental vs. Purchase

  It’s easy to compare the sticker price of a slurry pump, but what about long-term operational costs?

  Upfront Investment

  Purchasing a heavy-duty gravel pump can cost over $100,000, depending on its size and the level of customization. This capital expense may not be justified for one-time or infrequent use cases. Gravel pump rental, on the other hand, spreads the cost over time and aligns with project budgets.

  Ongoing Maintenance Costs

  Owning equipment means handling all servicing, replacements, and labor. Over a decade, maintenance could double the original purchase price. Rental agreements often include maintenance, making gravel pump rental more predictable and cost-effective.

  Regular inspection is crucial in reducing maintenance costs by identifying wear or damage early, ensuring optimal performance and longevity.

  Equipment Utilization Rates

  If your commercial gravel pump sits idle 70% of the year, that’s lost value. Renting allows you to pay only for the time you use. For businesses managing multiple job sites with varying timelines, this can be a game-changer.

Why EDDY Pump Stands Out in the Gravel Pump Market

EDDY Pump has established itself as a leading name in the gravel pump industry by delivering innovative, high-performance solutions built for the most demanding applications. From patented technology to nationwide rental access, EDDY Pump offers unmatched versatility and support.

• • Patented Non-Clog Technology

  Unlike traditional centrifugal pumps that rely on close-tolerance impellers prone to clogging, EDDY Pump uses a patented non-clog vortex design. This system creates a powerful eddy current, allowing the pump to move highly viscous fluids and large solids without direct contact with the slurry pump casing. As a result, EDDY Pump systems can handle slurries with solids content up to 60–70% by volume—ideal for gravel, rock, and heavy sediment removal.

  • Extreme Solids Handling

  EDDY Pump’s industrial gravel pump lineup is built to outperform in environments where others fail. Whether dealing with oversized rocks, compacted sediment, or debris-laden fluids, these pumps maintain continuous flow without clogging or mechanical wear. This extreme solids-handling capacity reduces maintenance cycles, minimizes unplanned downtime, and boosts overall operational efficiency, making them a reliable choice for various industries like mining, dredging, construction, and wastewater operations.

  • Engineering Support and Custom Solutions

  EDDY Pump goes beyond equipment delivery. Their engineering team collaborates with clients to develop fully customized systems tailored to specific site conditions and operational needs. Whether you need a deep pit pumping system, integration with GPS-controlled dredge equipment, or a skid-mounted diesel unit for a remote project, EDDY Pump can design and commission a complete turnkey solution.

  • Gravel Pump Rental Fleet

  To support temporary projects or emergency deployments, EDDY Pump maintains a robust rental fleet. Their gravel pump rental options include submersible, trailer-mounted, and remotely operated dredge systems powered by either electric or diesel engines. With fast delivery and expert support, these rental units are ready to meet the demands of urgent or short-term projects nationwide.

  Conclusion

  Selecting the best gravel pump means balancing technical requirements, long-term costs, and application-specific challenges. From durable impeller materials to advanced solids-handling designs, every component contributes to performance and reliability.

  If your operation relies on uninterrupted transport of abrasive solids, it’s time to consider an industrial gravel pump – whether purchase or gravel pump rental. And when it comes to quality, support and innovation, few names have the reputation that EDDY Pump does.

  Call one of our pump experts today. We’ll help you assess your system needs, match the right commercial gravel pump and get you up and running on time and on budget.

FAQs About Gravel Pumps

Q: How do I size the right gravel pump for my project?

Sizing a gravel pump correctly requires a detailed understanding of your application. Start by identifying the required flow rate (GPM), total dynamic head (TDH), and the size and type of solids you’ll be handling. Pump curves—performance graphs that show the relationship between flow, head, and efficiency—are essential in selecting the right unit. An oversized pump can cause cavitation and excessive wear, while an undersized slurry pump may not meet output requirements. It’s best to consult with a pump engineer or supplier who can analyze your system and recommend the optimal model based on those criteria. Gravel pumps are available in different sizes to match various project requirements.

Q: What solid size can these pumps handle?

A: The maximum solid size a gravel pump can handle depends on the model and impeller design. Standard commercial gravel pumps typically handle solids up to 4 inches in diameter. However, specialized models from EDDY Pump can move rocks, debris, and slurry with solids as large as 12 inches in diameter. These pumps are ideal for dredging, mining, and dewatering applications where solids are often oversized. Choosing the right slurry pump based on solid size is critical to prevent clogging and maintain consistent flow.

Q: How quickly can I rent a gravel pump?

A: Many gravel pump rental providers, including EDDY Pump, offer rapid deployment options. For standard rentals, units can often be mobilized and shipped within 24 to 48 hours, depending on your location and project needs. For emergency scenarios—such as flood response, dredging after storms, or equipment failure—EDDY Pump can expedite logistics with same-day dispatch or next-day delivery. It’s recommended to provide as much detail as possible during the inquiry to ensure proper pump matching and fast turnaround.

Q: Can gravel pumps be used underwater?

A: Yes, gravel pumps are designed for both surface-level and submerged operations. Submersible gravel pumps are specifically designed to function while fully submerged in water, making them suitable for applications such as pit dewatering, pond dredging, and underwater sediment removal. Additionally, EDDY Pump offers remotely operated dredge systems that incorporate submersible gravel pumps, allowing for precise control in deep-water environments. These solutions reduce the need for human divers, increase safety, and improve operational pump efficiency.

Q: What maintenance is required for an industrial gravel pump?

A: Regular maintenance ensures optimal pump performance and longevity. Typical tasks include inspecting wear parts, such as impellers and liners, monitoring seals and bearings, and checking for clogs or excessive vibrations. With EDDY Pump’s non-clog design, maintenance intervals are extended compared to traditional centrifugal pumps. However, following the manufacturer’s recommended maintenance schedule and using compatible replacement parts is essential to achieve minimal downtime and reduce operational costs.

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Q: Are gravel pumps energy-efficient?

related articles Our experts are fully qualified and can assist in any issues concerning warman pump gland packing. 1 What Is A Main Advantage Of A Centrifugal Slurry Pump? Are you looking to enhance efficiency and optimize performance in your industrial processes? Look no further than the powerful centrifugal slurry pump. In this article, we explore the main advantage of this essential equipment and how it can revolutionize your operations. Dive in to discover how this game-changing technology can propel your business to new heights.In the world of industrial pumps, centrifugal slurry pumps are known for their ability to handle abrasive and corrosive fluids with ease. Among the many manufacturers in the market, CNSME PUMP stands out for its high-quality and reliable products. One of the main advantages of CNSME PUMP's centrifugal slurry pump lies in its design and performance capabilities. 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By prioritizing training and safety practices, users can ensure a safe working environment and minimize risks associated with slurry pump operation. In conclusion, by implementing these considerations for slurry pump operation, users can maximize efficiency, extend the pump's lifespan, and reduce maintenance costs. Proper installation, maintenance, monitoring, and safety practices are essential for optimizing performance and ensuring safe operations. With the right approach, slurry pumps can provide reliable and efficient service in a variety of industrial applications.ConclusionIn conclusion, it is clear that proper slurry pump operation is essential for maintaining efficiency and longevity in industrial processes. By considering factors such as proper maintenance, monitoring of flow rates, and choosing the right materials for construction, companies can ensure smooth operation of their slurry pumps. 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In this article, we will delve into the benefits, applications, and key features of progressive cavity slurry pumps to help you make informed decisions for your pumping needs. Join us as we explore how these innovative pumps can enhance efficiency and performance in various industries.Progressive cavity slurry pumps are essential pieces of equipment in various industries, including mining, wastewater treatment, and construction. These pumps are specifically designed to handle abrasive and viscous materials, making them ideal for transferring slurry, sludge, and other challenging liquids. In this guide, we will explore the features, benefits, and applications of progressive cavity slurry pumps to help you make an informed decision for your pumping needs. 1. Understanding Progressive Cavity Slurry Pumps Progressive cavity slurry pumps, also known as PC pumps, are a type of positive displacement pump that works by using a rotor to move fluid through a stator. The unique design of these pumps allows them to handle high-viscosity liquids with solid particles, such as mining slurries, wastewater sludge, and drilling mud. The progressive cavity design ensures a steady and non-pulsating flow, making them suitable for applications where a consistent flow rate is crucial. 2. Features of CNSME PUMP Progressive Cavity Slurry Pumps CNSME PUMP offers a wide range of progressive cavity slurry pumps that are engineered to deliver reliable performance in demanding environments. Our pumps are constructed with hard-wearing materials such as high-chrome alloys, rubber, and stainless steel to ensure durability and long-lasting operation. The unique rotor and stator design of CNSME PUMP progressive cavity slurry pumps minimizes wear and reduces maintenance requirements, saving you time and money in the long run. 3. Benefits of Using CNSME PUMP Progressive Cavity Slurry Pumps There are several advantages to using CNSME PUMP progressive cavity slurry pumps for your pumping needs. These pumps are highly efficient, offering high flow rates and the ability to handle high-viscosity fluids with ease. The progressive cavity design ensures gentle handling of fluids, reducing the risk of damage to sensitive materials. CNSME PUMP pumps are also easy to install and maintain, making them a cost-effective and reliable pumping solution for various applications. 4. Applications of Progressive Cavity Slurry Pumps CNSME PUMP progressive cavity slurry pumps are suitable for a wide range of applications across industries. From mining and mineral processing to wastewater treatment and construction, these pumps can handle a variety of liquids with solids, including coal slurry, tailings, industrial waste, and more. The robust construction of CNSME PUMP pumps makes them ideal for harsh environments and challenging operating conditions, ensuring consistent performance and minimal downtime. 5. Choosing the Right Progressive Cavity Slurry Pump for Your Needs When selecting a progressive cavity slurry pump for your application, it is essential to consider factors such as the type of liquid being pumped, flow rate requirements, and operating conditions. CNSME PUMP offers a range of pump models with varying capacities and features to suit different applications. Our team of experts can help you choose the right pump for your specific needs, ensuring optimal performance and efficiency in your pumping operations. In conclusion, progressive cavity slurry pumps are versatile and reliable pumping solutions for handling abrasive and viscous materials in various industries. CNSME PUMP offers a range of high-quality pumps designed to deliver exceptional performance and durability in demanding environments. By understanding the features, benefits, and applications of progressive cavity slurry pumps, you can make an informed decision for your pumping needs and ensure smooth and efficient operations.ConclusionIn conclusion, this guide for progressive cavity slurry pumps serves as a valuable resource for those in the industry looking to optimize their pumping processes. With 20 years of experience, our company has the knowledge and expertise to assist you in selecting the right slurry pump for your specific needs. By following the information provided in this guide, you can improve efficiency, reduce downtime, and ultimately enhance the performance of your operations. Trust in our experience and let us guide you towards success in your slurry pumping applications. 5 What Problems Will Be Caused By Improper Use Of The Slurry Pump? At present, 80% of slurry pumps are widely used in factory selection to transport slurry. Whether the flow rate, rotation speed and other parameters of the slurry pump are reasonable directly affects the life of the slurry.Choosing the appropriate working parameters can not only give full play to the performance of the slurry pump, but also improve the service life. If the choice is improper, the slurry pump will not work properly, and may even cause the factory to be selected and production will be suspended.In order to fully utilize the performance of the slurry pump, it is necessary to fully understand the relationship between the slurry flow rate, rotation speed, etc. and the life of the slurry pump in actual work.Due to the flow of the ore slurry in the slurry pump, the ore slurry will cause impact and wear on the inner lining of the pump body. Obviously, with the same slurry flow rate, the slower the slurry flow rate, the lighter the wear of the pump body, and the longer the service life of the slurry pump.Therefore, the design flow rate should be as small as possible while ensuring the efficiency of the slurry pump.Furthermore, the lower the pump speed, the lower the relative speed of the impeller and the slurry will be, and the slower the wear speed of the impeller will be.In addition, at the same flow rate, the larger the diameter of the impeller, the lower the rotation speed, the fewer ore particles per unit area, and the wear of the impeller is lighter.Therefore, the correct choice should be a large pump with low speed, which can extend its service life and reduce costs due to its light wear.In addition to flow rate and speed, the head also has a certain impact on the life of the pump. The actual head of the pump must be controlled within the withstandable range. Otherwise, too high head will lead to excessive flow of the pump. On the one hand, it will cause evacuation and damage to the pump. On the other hand, too large flow will increase wear and reduce service life.Slurry pumps are commonly used in ore dressing processes and are mainly used for ore slurry transportation.Improper use of slurry pumps may affect the normal operation of slurry pumps and affect their production capacity.What problems can easily cause improper use of slurry pumps, and how to solve them to make the slurry pump run normally?1. The long-term use of the slurry pump causes scaling on the surface of the cooler pipe wall, resulting in poor heat transfer; the cooling water volume is small or no cooling water is added.Therefore, it is necessary to check whether the bearing cooling water pressure and flow rate are suitable. Generally, the cooling water pressure of the slurry pump is 0.05~0.2MPa, and the cooling water flow rate is 1~3m3/h. Change the scaling cooler in time, turn on the cooling water before the pump starts to adjust the pressure to the specified value, and check the bearing temperature rise (35℃) regularly. The high temperature must not be greater than 75℃.2. During the use of the slurry pump, the seal failed due to packing wear, and the slurry leaked along the shaft seal. The slurry instantly filled the semicircular positioning hole curved surface of the bracket and the rear pump shell. The slurry discharged from the discharge port could not be sealed into the oil pool through the water barrier plate, causing bearing damage.During daily maintenance, attention should be paid to regularly detecting the leakage of shaft seal water. When the leakage amount increases, the bolts of the filler gland should be adjusted, and the packing and failed O-rings should be replaced in time to prevent leakage slurry from leaking from the waterproofing plate sealing into the bracket oil tank along the shaft.3. The lubricant oil is not clean, resulting in problems such as bearing friction, wear, heating, vibration, etc. You can lubricate various parts of the bearing to reduce friction and wear. The quality of the lubricant should be checked regularly to allow dust or oil to age and deteriorate.The lubricating oil should be adjusted strictly in accordance with the pump instruction manual. It should not be too much or too little. If there is too much oil, most of the friction heat inside the bearing cannot be taken away, which will not play an effective role in heat dissipation, and will also increase the temperature rise of the bearing; if there is less oil, it will cause the bearing oil film to rupture and dry friction, burn the bearing.These small problems with slurry pumps will have a great impact over time and should be checked in time and repaired in time to ensure the normal use of slurry pumps.