What Is a Hydraulic Ram Pump?

The hydraulic piston pump or solid pump is driven by a hydraulic power pack, and the hydraulic cylinder advances the conveying cylinder to output the materials in the conveying cylinder to the pipeline. Generally divided into single plunger and double plunger, the typical representatives are the four types of solid pumps from Putzmeister, Germany: EKO single plunger pump, KOS, KOV, HSP three double plunger pumps. This pump is a volumetric pump, which is especially suitable for long-distance pipeline transportation of high solids content and viscous materials. Its advantages are very stable and reliable operation, but the noise is large, the transmission pressure can reach 130Bar, and the displacement can reach 0.5 ~ 500. Cubic / hour. Widely used in sewage treatment, solid waste treatment, mining metallurgy, dredging, dredging, petrochemical, power plants, cement industry and other fields.

Hydraulic piston pump

The hydraulic piston pump or solid pump is driven by a hydraulic power pack, and the hydraulic cylinder advances the conveying cylinder to output the materials in the conveying cylinder to the pipeline. Generally divided into single plunger and double plunger, the typical representatives are the four types of solid pumps from Putzmeister, Germany: EKO single plunger pump, KOS, KOV, HSP three double plunger pumps. This pump is a volumetric pump, which is especially suitable for long-distance pipeline transportation of high solids content and viscous materials. Its advantages are very stable and reliable operation, but the noise is large, the transmission pressure can reach 130Bar, and the displacement can reach 0.5 ~ 500. Cubic / hour. Widely used in sewage treatment, solid waste treatment, mining metallurgy, dredging, dredging, petrochemical, power plants, cement industry and other fields.

Chinese name

Hydraulic piston pump

Belong to

Positive displacement pump

Conveying pressure

Up to 130Bar

Displacement

Up to 0.5 ~ 500 cubic meters / hour

Piston pumps have been around for decades, and their popularity depends on two main reasons:

1. They do not need external energy-the force of flowing water provides them with the required energy.

2. Their device is extremely simple, with only two moving parts.

The basic principle of a plunger pump is simple. Such pumps use a relatively large amount of momentum in a moving body of water to pump a relatively small volume of water up.

To use a plunger pump, a water source must be above the pump. For example, there should be a pond on the mountainside so that a pump can be installed under the pond. Use a water pipe to direct water from the pond to the pump. The pump has a valve that passes water through the pipe and accelerates the flow.

1. When the water reaches the maximum speed, the valve is closed.

2. After the valve is closed, the flowing water generates huge pressure in the pump due to inertia.

3. The pressure opens the second valve.

4. The high-pressure water flows through the second valve to the water delivery pipe (this pipe usually has an air chamber to accommodate as much high-pressure water as possible when the water is flushed in).

5. At this time, the pressure in the pump drops. The first valve opens again to allow water to flow and accumulate momentum again. And the second valve is closed.

6. Repeat this cycle.

The water pipe lifts the water above the pump and water source. For example, if the pump is 3 meters below the pond, the outlet of the water pipe can be 30 meters above the pump.

It can be seen that the plunger pump has a big disadvantage, it wastes a lot of water. Generally, only about 10% of the water consumed by such pumps actually flows up the water pipe. The remaining water flows out of the pump when momentum is accumulated.

There is nothing magic about a plunger pump. We can achieve the same function in another design way:

1. The water flowing from the pond drives a waterwheel.

2. The waterwheel is connected to a common shaft-driven water pump (or reciprocating pump, centrifugal pump, etc.).

3. Water is pumped up by this pump.

This design has more moving parts, but it can achieve the same function and can easily be scaled up or down to any size. It can be seen that people have thought of using flowing water energy for a long time!

The plunger pump is a hydraulic pump that relies on the plunger to reciprocate in the cylinder to change the sealed volume to achieve oil absorption and pressure. Compared with gear pumps and vane pumps, this pump has many advantages.

First of all, the parts that make up the sealed volume are cylindrical plungers and cylinder bores, which are easy to process, can obtain high fitting accuracy, have good sealing performance, and still have high volumetric efficiency at high pressure work;

Second, the flow can be changed by simply changing the working stroke of the plunger, and the variable is easy to realize;

Third, the main parts in the plunger pump are all under compressive stress, and the material strength performance can be fully utilized.

Because the plunger pump has high pressure, compact structure, high efficiency, and convenient flow adjustment, it is used in systems that require high pressure, large flow, and high power, and where flow needs to be adjusted, such as planers, broaching machines, hydraulic presses, construction machinery, and mining It is widely used in metallurgical machinery and ships. The plunger pump can be divided into radial plunger pump and axial plunger pump according to the arrangement and movement direction of plunger. According to the type of distribution device, it can be divided into plunger pump and valve with gap sealing type There are two types of plunger pumps for distribution devices, which are divided into quantitative plunger pumps and variable plunger pumps according to whether the displacement is variable.