Piston pumps

An overview of the piston pump will be shared by Thai Khuong in this article. You will find some problems that you are facing such as: What is a piston pump? Structure of a piston pump, principles as well as classification of piston pump like? If you need further answers to problems related to this pump, please contact Thai Khuong directly. Let’s start to follow the article!

What is a piston pump?

High-pressure / piston pumps are pumps that use oscillating displacement of the shaft or piston to act on a liquid, belonging to the volumetric pump group — one of the traditional pumps in the world in early use.
Features of this pump type are high pressure and high flow rate.

Product list

Structure of a piston pump

The piston pump is a durable and relatively simple device. A piston pump is basically made up of one piston, one chamber, and two valves.

Conventional piston pump
Conventional piston pump

The pump works by driving the piston down to the chamber and compressing the material inside. To better understand the structure of each pump line. The tracking bat in the pump classification offline!

Principle of piston pump

Although there are many types, the basic principle that creates the force to attract and repel fluid for a piston pump is the reciprocal motion of the piston in the pump chamber.

The compression unit that produces the main thrust is the piston tip (a piston or vibrating diaphragm). They are responsible for pushing the fluid from the working chamber out of the pump through the valves.

The volume V of the working chamber varies depending on the position of the piston during movement.

When the piston moves back and forth, the piston ends are called dead spots. The piston pump works based on two processes:

  • Smoking process
  • The process of pushing

These two processes work alternately. The suction and push process is called a duty cycle of a piston pump.

Conventional piston pump
Conventional piston pump

Piston pump parameters

Pump parameters in general, and piston pump, in particular, are the basis for us to choose and consider whether they are suitable for the system or project or not. However, these parameters for each type, each pump line is completely different. Therefore, it is impossible to talk about them as detailed information in this article. However, you can find out these parameters on the pump label, or on the catalog of the supplier. Or the fastest, you contact Thai Khuong and state your technical requirements for advice on choosing the right pump line you need!

Types of piston pumps

In fact, the classification of piston pumps up until now has always been a controversial topic. Because there are quite a few types of pumps that are classified as piston pumps. But according to Thai Khuong’s experience. We can roughly divide the piston pump line into two basic categories as follows:

Bơm piston hướng trục (axial pistons pump)

Axial piston pump (axial pistons pump)
Axial piston pump (axial pistons pump)

Axial piston pumps are pumps with pistons placed parallel to the pump axis and driven by joints or inclined discs. The piston is always pressed against the surface of the disc, so the piston moves in a forward motion while rotating the rotor.
Axial rotor piston pumps have a more compact size than radial rotor pumps.

Axial pistons pump
Axial pistons pump

For axial piston pumps are divided into two types: rotating tilt disc piston pump and piston pump with a rotating cylinder block

Axial piston pump with rotating cylinder block
Axial piston pump with a rotating cylinder block
Axial piston pump with rotating cylinder block
Axial piston pump with a rotating cylinder block

Bơm piston hướng kính (radial piston pump)

Radial piston pumps are also known as radial piston pumps. The pump has the piston moving in the same direction as the center of the rotor.
These pumps are large in size and are often quite complex to fabricate.

In addition, the preceding engineers also have a way to classify the piston pump according to the stroke of the piston such as:

  • Single-acting piston pump
  • Double-acting piston pump

Advantages and disadvantages of a piston pump

Understanding the pros and cons of any type of device or pump will give us a better overview of the device. From there, there are the right choice decisions. And with the piston pump too.

Advantages of piston pump

  • High pump efficiency
  • Generates pressure from large to very large
  • Pressure can be controlled without affecting flow rate
  • No priming required
  • The number of revolutions is limited to ensure pump stability (due to the inertial force of the fluid in the pump while working)
  • Flow can be changed by changing the piston stroke
  • Capable of pumping viscous liquids and mud …

Disadvantages of piston pump

The piston pump head has inherent disadvantages that we easily notice such as:

  • Shape size is often bulky and heavy
  • Operating and maintenance costs are usually quite high
  • Only handle low flow rates
  • There is a flow fluctuation (fluctuation in pressure) because the pump operates based on the cycle of the piston

Application of piston pump

Some of the applications where we see the presence of piston pumps are:

Ứng dụng bơm piston

Piston pump application [/ caption]

  • Hydraulic
  • Using mineral oil pump, bio-oil, emulsion …
  • Used on cars, balanced platforms
  • Used in plastic injection molding machines, powder …

Piston pump rack

The piston pump price or the investment cost of a piston pump head cannot be said high or low. They are priced according to the pump capacity, the brand, and the origin of the piston pump you are looking to buy.

For example, the cost of piston pumps originating from Europe will be lower for products from Asia. But in return, their quality is better, their performance is much more durable and accurate.

Through this article, if you need or need more advice on piston pump, please contact Thai Khuong for support!

Piston pump series

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