Difference between air pumps and air compressors:
1, indicates a different meaning:
(1) air pumps that is, air pumps, from a closed space to exclude the air or from a closed space to add air to a device . Air pumps are mainly divided into electric air pumps and manual air pumps, foot-operated air pumps. Electric air pump. Electricity as the power of the air pump, through the power of non-stop compression of air to produce air pressure.
(2) air compressor that air compressor, is a device used to compress gas. Air compressor and pump construction is similar. Most air compressors are reciprocating piston, rotary vane or rotary screw. Centrifugal compressors are very large applications.
2, the working principle is different:
(1) the working principle of the air pump:
The engine drives the crankshaft of the air pump through two delta belts to drive the piston for pumping, and the pumped gas is introduced into the storage cylinder through an air guide tube. On the other hand, the gas storage cylinder and through a guide tube will be the gas storage cylinder into the fixed in the air pump regulator, so as to control the gas pressure inside the cylinder. When the air pressure in the cylinder does not reach the regulator set pressure, the gas from the cylinder into the regulator can not open the regulator valve;
When the air pressure in the cylinder reaches the regulator set pressure, the gas from the cylinder into the regulator valve open the regulator valve, into the pump and the regulator connected to the airway, and through the airway to control the air inlet of the air pump is always open, so that the pump is empty! The air inlet of the air pump is normally open through the airway, thus making the air pump run with no load, and achieving the purpose of reducing power loss and protecting the air pump.
When the air pressure in the storage cylinder is lower than the pressure set by the regulator due to loss, the valve in the regulator is returned by the return spring, disconnecting the pump's control air circuit and the pump starts pumping again.
(2) The working principle of the air compressor:
When the compressor works, the air is sucked in through the self-cleaning air filter, and the filter is cleaned automatically through the PLC, and the air enters into the first stage of compression after being automatically adjusted by the inlet guide vane.
The temperature of the gas after the first stage compression is high, and then it enters the intermediate cooler for cooling (the water goes inside the pipe, the gas goes outside the pipe, and the flow rate of the water in the intermediate cooler is required to be 110m/h), and then it enters the second stage compression system.
In order to avoid the gas in the system back into the compression chamber (to avoid starting under pressure) in the compressor discharge pipeline is installed with a hanging full-opening check valve, the compressor discharge gas pushed open the check valve into the exhaust muffler, and then into the first stage of the after-cooler, the second stage of the after-cooler, and then into the exhaust pipeline.
3, the actual application of different:
(1) air pump:
Electric air pump applications: tunnel ventilation, biogas digester aeration, wastewater treatment oxygen, etc..
Manual air pump applications: filling balloons or fillable pneumatic small toys.
Application of foot-operated air pump: bicycle pumping, filling balloons or pneumatic small toys.
(2) air compressor:
Instrumentation control and automation devices, such as machining centers for tool replacement. Vehicle braking, door and window opening and closing jet loom with compressed air blowing the weft yarn to replace the shuttle, food, pharmaceutical industry, the use of compressed air to mix the slurry, large marine diesel engine starting oil well fracturing, high-pressure air blasting for coal mining, weapons systems, missile launches, torpedo launches.
Expanded Information
Composition of the air compressor structure:
(1) oil circulation system
Before the start, first start the oil pump control system, the oil pump control system to start to ensure that the compressor each lubrication parts lubrication is good, and at the same time, the oil pump control system can be built through the built-in temperature control valves to adjust the internal oil pressure and oil temperature to meet the system needs. At the same time, the oil pump control system can adjust the internal oil pressure and oil temperature through the built-in temperature control valve to meet the system needs.
(2) Air Circulation System?
When the compressor is working, the air is sucked in through the self-cleaning air filter, and the filter is cleaned automatically by PLC, and the air enters into the first stage of compression after being automatically adjusted by the inlet guide vane, and the temperature of the gas after the first stage of compression is higher.
Then into the intercooler for cooling (water to go inside the pipe, gas to go outside the pipe, the water flow requirements of the intercooler for 110m / h) after the second stage of the compression system, in order to avoid the system of gas into the compression chamber (to avoid the pressure start) in the compressor exhaust pipeline is installed with a hanging full-opening check valve, compressor discharge gas pushed away from the check valve into the exhaust muffler.
Then it enters the first stage after-cooler, the second stage after-cooler, and then enters the main exhaust pipe.
(3) Water Circulation System
The cooling water enters the intermediate cooler of the compressor through the pipeline to cool the gas discharged from the first stage of compression, and then it enters the aftercooler to cool the exhaust gas, and the other way of the cooling water inlet pipe passes through the two heat exchangers on the upper part of the main motor to cool the motor windings, and there is also a way of the oil cooler to cool the oil cooler.
(4) power distribution system
Air compressor for 2000kW high-voltage motor (10kV) using full-voltage start, the control cabinet for the indoor AC, metal-clad withdrawable switchgear, switchgear by the fixed cabinet and can be withdrawn from the part that is the trolley composed of two major parts, to achieve the purpose of the control, protection, monitoring, with "five prevention" function. The switchgear is composed of two main parts, namely the fixed cabinet and the withdrawable parts, namely the handcart, to realize the purpose of control, protection and monitoring, and has the function of "five prevention".
(5) screen protection system
The central signaling device is divided into two kinds of accident signal and preview signal. The main task of the accident signal is in the circuit breaker accident trip, can be issued in a timely manner sound signal, and make the corresponding circuit breaker light position signal flash. The main task of the preview signal is to run the equipment in the occurrence of anomalous phenomena, instantaneous or delayed sound signal, and make the light character plate shows the content of the anomalous phenomena.
(6) DC power supply system
PZ32 series automatic maintenance-free lead-acid battery DC power supply equipment, by the charging device screen, DC feeder screen and battery composition, with automatic current stabilization, automatic voltage stabilization, automatic voltage regulation, etc., for the central signaling screen and high-voltage control system to provide power.
(7) DTC control system
DTC control panel is the "brain" of the compressor, the values of all kinds of on-site sensors are finally summarized to the DTC control panel, which displays all kinds of operating parameters and monitors the operating status of each part of the compressor. When some parameters are out of the allowable range, DTC will issue corresponding alarms or automatically shut down the air compressor.
Source of Reference
Baidu Encyclopedia - Air Pump
Baidu Encyclopedia - Air Compressor