Posted on Mar 18, 2020
Both industrial and Commercial Pumps are pump mechanism that used to deal with liquid substances with various design and operational issues to achieve specific transmission goals. These are critical components to operators to manage their liquid management duty.
A commercial pump, by definition, is a pump equipment that moves fluids-state substance by its mechanical action for commercial applications. Pumps can be categorized into three major models based on the method those pumps exploited to move the target fluids. And just like industrial pumps, Commercial Pumps can also be classified in another way. That is, submerged in the fluid in which they are pumping or be placed external to the fluid. In the former case, it is called submersible pumps as the professional name.
Besides, pumps can also be categorized by their method of displacement into positive displacement pumps, impulse pumps, velocity pumps, gravity pumps, steam pumps and valve-less pumps. Besides, there are two basic types of pumps, that is, positive displacement and centrifugal. These types of classifications are used in both theoretical and commercial pump manufacturing, while in the commercial usages, the main purpose is for industrial application. For the utilization of water resources, pump operation is pretty much crucial to the whole circulation issues concerning many key points. Generally speaking, pumps can operate through many power (energy) sources, such as manpower’s’ manual operation, electricity, engines, or even wind power. Those energy sources can be a wide variety of equipment which comes in any sizes, from microscopic for use in medical applications to large industrial pumps for waterworks, or ordinary size industrial pump for machine tool coolant transmission.
Industrial pumps serve in a wide range of applications such as pumping water from conventional wells, aquarium filtering duty, pond filtering tasks, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers. In the machine tool sectors, pumps are used to move cutting liquids, coolants, etc. in the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis. Let’s move on to the next subject. So, unlike centrifugal pumps, a positive displacement pump can produce the same flow at a given speed no matter what the discharge pressure. As a result, positive displacement pumps are constant flow machines. At the same time, however, a slight increase in internal leakage as the pressure increases prevents a truly constant flow rate. That is to say, a positive displacement pump must not operate against a closed valve on the discharge side of the pump, as it has no shutoff head like centrifugal pumps. Therefore, positive displacement pumps operating against a closed discharge valve continue to produce flow and the pressure in the discharge line increases until the line bursts, the pump is severely damaged. For safety concern, a relief or safety valve on the discharge side of the positive displacement pump is thus necessary, and both manufacturers of pump and users in the industry shall be careful of this issue.