Jun. 17, 2024
Pumps designed for pumping slurries will be heavier duty than those designed for less viscous liquids since slurries are heavy and difficult to pump.
Slurry pumps are typically larger in size than standard pumps, with more horsepower, and built with more rugged bearings and shafts. The most common type of slurry pump is the centrifugal pump. These pumps use a rotating impeller to move the slurry, similar to how a water-like liquid would move through a standard centrifugal pump.
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Centrifugal pumps optimized for slurry pumping will generally feature the following in comparison to standard centrifugal pumps:
For pumping abrasive slurries, these types of pumps may also be made from specialized high wear alloys such as AL-6XN® or Hastelloy® C-22®. Hardening stainless steel is also a common option for abrasive slurries, with Expanite and Armoly being two hardening processes.
For certain types of slurry pumping conditions, positive displacement pumps may be a more appropriate choice than a centrifugal-style pump.
These conditions include:
Common types of positive displacement pumps used in slurry pumping applications include:
These pumps use two meshing lobes rotating within a pump's housing to move fluids from the pump's inlet to its outlet.
These pumps employ rotating screws to move liquids and solids from one end of the pump to another. The screws' turning action creates a spinning motion that pumps material.
These pumps use a flexible membrane that expands the volume of the pumping chamber, bringing in fluid from an inlet valve and then discharging it through an outlet valve.
Choosing the right pump for your slurry application can be a complex task due to the balance of many factors including flow, pressure, viscosity, abrasiveness, particle size, and particle type. An applications engineer, who knows how to take all of these factors into account, can be a great help in navigating the many pump options available.
~ Matthew Sato, Applied Products Sales Manager, Ampco Pumps
In determining which type of slurry pump is best suited for your particular application, follow these four simple steps.
The Main Wet End Parts for Slurry Pump Include: Impeller, Volute, Throat Bush, Frame Plate Liner Insert (Back Liner).
The wet end parts, the core part of the slurry pump, are the parts that directly contact the conveying medium during the operation of the slurry pump. Therefore, they are easy to wear and need to be changed frequently.
In addition, the slurry pump stuffing box, Expeller and Expeller Ring are often replaced.
The following is a detailed description of the production process of the slurry pump Parts.
1. Raw Material
The Main Material: High Chrome, Scrap Steel and other Metal
NaiPu adopt the high quality raw material. The Scrap Steel is also quite clean and pure.
2. Foundry
Casting Method: Lost Foam Casting and Sand Casting
2.1. Sand Mixing
Preparation of casting sand and core sand for modeling
2.2. Mode Making
Main Mode Type: Foam, Wooden Mode, Aluminium Mode
NaiPu can supply Mode Measuring and Drawing according to the Sample
2.3. Modeling
2.4. Melting
Match the chemical composition according to the required metal composition to form a qualified liquid metal solution (including qualified components and qualified temperature)
2.5. Pouring
2.6. Forming
After the liquid inside the mode is solidified after a period of time, then the parts are taken out for cleaning;
2.7. Sand Blasting
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2.8. Heat treatment
Normalizing: Increase the hardness of the rough casting parts to achieve the ideal state, so that its crystal structure changes, increase the wear properties;
Annealing: soften the rough casting parts, mainly used in the production process of the slurry pump impeller, when the sets of turnbuckles Annealing, then processing and then normalizing to achieve the use of hardness,
Tempering: The hardness of the parts of the fitting has reached the ideal second-order changes in the crystal structure, so that the distribution of the material inside the parts is more uniform, making the parts more flexible and wear and corrosion resistant.
The first heat treatment - annealing: the products after the removal of sand is relatively brittle, to be annealed, is to heat the parts to a certain temperature and continue for some time, so that the hardness of 40HR or less, to facilitate processing and drilling;
3. Machining
3.1 Lathe processing
After the first heat treatment, because it is a rough casting part, it must be processed through the lathe to reach the installation and use of size, Inaccurate dimensions may result in inability to install or large installation errors leading to reduced service life. So this step must have a professional quality inspection to test the finished parts and the next step can be performed within a reasonable error range. Slurry pump impeller should be performed dynamic balance and static balance to make the overall structure of the impeller even to reduce the occurrence of vibration.
3.2 Secondary heat treatment
Normalizing the slurry pump parts so that the hardness reaches the standard hardness;
3.3 Three times heat treatment
The tempering of the slurry pump parts changes the internal crystal structure of the slurry pump parts.
4. Paint, Brush oil treatment;
After the above several procedures, it is necessary to carry out brushing and brushing operations. The paint is used to prevent the first layer protection of the slurry pump parts during the ordinary storage and transportation process. Brush oil is used to make the light surface non-corrosive and more compact during assembly.
5. Assembly
If the entire pump is required, the accessories are installed according to the installation step size. If only the wet end parts are purchased, no assembly is required. It mainly needs to change the wet end parts during the using. The remaining parts are generally replaced once a year under normal use and maintenance.
6. Test
The assembled pump must be tested for pressure, leakage, and overall coordination. Through testing to verify the assembly quality of the slurry pump and ensure that the user is more secure during use.
7. Packing
The pump and parts are packed with Standard Export Wooden Case with Film bag inner.
8. Delivery
Welcome to distribute our pump.
1. Welcome to show our pumps picture on your website. The pumps are widely used in the industry such as metallurgy, mine, power factory and chemical Industry.
2. When there is customer enquiry the Pump,
1. Ask customer if he needs the whole set pump (pump + Accessories (Belt, pulley, belt guard, motor base, base plate) + Motor) or only Bare shaft pump?
2. If customer needs the whole set pump, then we need to know the usage? flow? head? slurry Gravity? the more details the better, so that we can choose the suitable pump model and calculate the accurate motor power.
If possible, let customers try to draw a sketch draft about how to plan to install this pump? Transport the medium from where to where? the horizontal long distance? the vertical height?
3. You can transfer customer's enquiry to me, and I can help you how to reply customer's question.
Welcome to contact me for more!
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Skype: kitty_naipump
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