Minghao Electromechanical Technology (Shanghai) Co

Explosion-proof blower factory, professional supplier of explosion-proof blowers, Shanghai Minghao Fan Co., Ltd. Our company provides technical support for explosion-proof blowers and the lowest price. Insulation level of explosion-proof blower
Protection level

Configuration
Motor
Made according to European
standards
Standard
Scroll blower uses grade
insulated
extremely explosion-proof motor to directly drive
oil seal
Use maintenance-free shaft seal to separate the motor and blower body
Housing
The blower and motor housing are cast separately
The surface is smooth and defect-free.
Muffler
The exhaust and suction pipes are equipped with silencers to reduce noise
Usage Points
When the explosion-proof blower is running, the current consumed by the motor will vary with the pressure and vacuum. Improve and increase. If the current is too large, it will cause the contactor load to trip. To prevent tripping, a vacuum or pressure release valve can be installed on the suction or exhaust side. The working principle of the explosion-proof blower
When the impeller rotates, the wind vane pushes the gas due to the centrifugal force. Moving forward and outward creating a series of spiral movements. The air between the impeller blades accelerates and rotates in a spiral shape and squeezes the gas outside the pump body into
(
Sucked in through the suction port
)
Side groove
When it enters the side channel, the gas is compressed and then returns to the impeller blades to accelerate rotation again. As the air passes through the impeller and side grooves along a spiral track, each impeller blade increases the degree of compression and acceleration. As the rotation proceeds, the kinetic energy of the gas increases, causing the pressure of the gas passing along the side channel to further increase.
When the air reaches the connection point between the side groove and the discharge flange (the side channel narrows at the outlet), the gas is squeezed out of the blades and discharged from the pump body through the outlet muffler. The characteristics of the explosion-proof blower are blowing and suction dual functions, one machine and two You can use suction or blowing to operate with less oil or no oil. The air output is clean. Compared with centrifugal fans and medium-pressure fans, the pressure is much higher and is often more than ten times that of centrifugal fans. If the pump body is integrally die-cast And it uses anti-vibration mounting feet, so its requirements for the installation foundation are also very low, and it can even operate normally without fixed feet. It is very convenient and saves installation costs and installation cycles. Compared with similar fans, its operating noise is lower. For example, the ultra-quiet vortex blower is maintenance-free. Its consumable parts are only two bearings. There is basically no need for maintenance during the warranty period. The mechanical wear of the vortex blower is very small because there are no other mechanical contact parts except the bearings, so the service life is Of course, it is also very long. As long as it is under normal use conditions, there is no problem at all. It is easy to install and use! Precautions for selecting a vortex fan. Since vortex fans are widely used, their selection is also relatively complicated. Generally speaking It is said that you need to follow the following two steps. You need to determine what function of the fan is used on site, whether it is suction or blowing. Find the pressure flow curve corresponding to the vortex fan. If you read the wrong curve, sometimes the selected product cannot be used based on the calculated pressure and flow rate. Find the working curve above the working point corresponding to both pressure and flow on the flow chart, and then select the vortex fan model based on the working curve. Different work sites have different requirements for pressure and flow, so you want to get relatively accurate data. Relevant calculations are required. Please call our company's engineers directly for this. Precautions for installation of explosion-proof blowers. It is necessary to use flat washers and spring washers to tighten the screws. It is best to use rubber buffer rubber to bear the weight of the vortex blower, especially for large ones. A powerful Haoguan vortex blower is indispensable. For some occasions where noise is required, a silencer can be installed to reduce the noise (generally about 100%). The silencer is installed at the end of the air inlet duct or outlet duct. For some applications For occasions with high noise requirements, a layer of silencer foam can be added according to the conditions of the machine itself to meet the noise requirements on site. Please consult our company for details. When using silencer foam to silence, pay attention to the distance between the vortex fan and the box and pay attention to the ventilation of the fan. When dissipating heat, pay attention to the use of rubber buffer rubber to bear the weight of the vortex fan. For details, please consult our company's staff. The pipe connection of the inlet and outlet of the vortex fan should be connected with a hose to isolate vibration. Precautions for the use of explosion-proof blowers. Explosion-proof blowers need to carry out two aspects. The first protection is pressure and the second is dust. For pressure, the pressure relief valve is often used. It is an unloading valve. When the operating pressure of the vortex blower exceeds the pressure set by the pressure relief valve, the pressure relief valve will automatically open to release the excess pressure. to protect the vortex fan. Filters are often used for dust. They often use filter elements with different filtration precisions according to different usage sites. Different filter elements have different maintenance methods and service life. You need to ask clearly when ordering. In some special occasions, special protection is required. For example, when used in a sealed environment, ventilation and heat dissipation must be paid attention to. When the ambient temperature (the inlet air temperature is relatively high), more attention must be paid to ventilation and heat dissipation or a vortex fan that allows a higher inlet air temperature ( For example, there is a vortex blower that allows the inlet air temperature to reach (up to br/> If the motor does not work, check the motor wiring or replace the motor
If the fan head is damaged, repair the fan or replace it
If there is a foreign object stuck in the fan, remove the foreign object
(2) Increased noise
Bearing Dry lubricate and add bearing grease
Replace the bearing if the bearing is damaged
Replace the impeller or pump head if the impeller is worn
Tighten the fastener if the solid parts are loose or fallen off
If there is foreign matter in the fan, remove the foreign matter or replace the pump. Head
(3) The vibration increases and the bearing is damaged. Replace the bearing
If the impeller is unbalanced, remove foreign matter in the impeller or calibrate the dynamic and static balance
The main shaft is deformed, replace the main shaft or pump head
The working state enters turbulent vibration Adjust the working status to avoid the turbulence area
The air inlet and outlet inlet filter is clogged and clean the filter
(4) The temperature rises and the air inlet temperature is too high. Reduce the air inlet temperature
Bearing dry lubrication Add bearing grease
If the fan efficiency decreases, clean the blade path dust or replace the pump head
Change the working status and adjust the working status
Increase the ambient temperature and increase ambient ventilation and heat dissipation
(5) Pressure reduction pump The head speed decreases, the power supply voltage is low or the motor fails
The pipe network resistance increases and reduces the pipe network resistance
The working status changes and adjusts the working status
The motor turns to the opposite direction and the motor is rewired
(6) The flow rate is reduced, the inlet and outlet air filters are clogged, clean the filter
The pump head speed is reduced, the power supply voltage is low or the motor is faulty
The pipe network resistance is increased, reduce the pipe network resistance
The working status is increased and the working status is adjusted
/> Motor turns in reverse direction and rewires the motor
If the fault still cannot be eliminated by using the above method, please contact our company personnel.
Scope of use and service
Explosion-proof high-pressure blower
Yes A high-pressure blower (gas ring vacuum pump does not produce sparks when running) that can be used in flammable and explosive plants. Explosion-proof high-pressure blowers are mainly used in coal mines, petroleum, natural gas, petrochemical and chemical industries. In addition, in textile, metallurgy, urban gas transportation It is also widely used in grain and oil processing, paper, pharmaceutical and other sectors.