Removing the fan mounting method

First remove the protective cover, disconnect the motor and fan couplings, coupling bolts when disassembling the bolt is tapered, and must take the lead screw nut is screwed to flush when appropriate banged move before You can remove the nut, attention must take place the removed bolts to the specified location or the box, so lost.
2, the inlet valve or disassemble the fan and air guide short, fan housing, pay attention to the disassembly sequence, well marked. Bearing cover removal, disassembly must before discharging oil bearing housing, bearings at both ends and gradually removed the gland, when the bearing housing cover is removed, be sure to pay attention to the positioning pins, not to damage the pin, bearing housing placement must not be placed directly on the ground, on the ground have a plate or other flat things.
 3, the rotor must be tied hanging out strong, then grilled couplings, Rama did after top tight with rapid heating torch, do not heat too long, try to use the Ramallah bearing disassembly, try not to cut off, cut off when, be careful not to hurt the spindle. Impeller fastening nut demolition, a dedicated wire blank must use tap tap, dried jack top tight channel, rapid heating, rapid post ripped loose.
4, when cleaning the impeller, easy to remove the available tools such as shovels to clean up beat, the first time by Oaks cleaning, be sure to use cloth wrapping the impeller surface uniformly moist, then gradually cleared.
5, the bearing housing to clean thoroughly, wipe clean with a rag and cleaning agents, bearing housing sealing surface with a clean blade, check the inner bearing surface scratches, inspect the spindle wear, polished with sandpaper to clean the spindle.
 6, installation of bearings, bearing heater bearing is heated to 100 degrees, the spindle prior butter evenly, quick to install in place, prepare near nut in place, plus the lock piece mounted on the front wheel bearings must take gland installation, production good bearing seal asbestos pad, (the same before coupling installation, installed bearing gland, making a good seal) impeller and coupling installation must heated to 170 ---- 200 degrees.
7, pay attention when installing the rotor bearing must indeed stuck in the bearing, accurate placement, and then covered with the bearing housing, (according to bearing rotation is flexible, consider the added thickness of lead wire test seals) bearing housing sealing surfaces to use enough sealant evenly, accurate positioning pin in place and tighten the bolts evenly. Bearing gland in place. (Felt seal replacement, seal not too tight or too loose)

8, lubricating the bearing housing, according to the requirements of Canada, 150 # or 46 # anti-wear hydraulic oil, add the oil level to the oil sight glass two-thirds. Air guide installation, cover the fan housing, housing seal surface with asbestos tape or with PTFE seal, should be uniform. Fan inlet valve or a short installation, the sealing surface with asbestos rope or PTFE tape, bolts evenly.
  9, manual plate car, the rotor rotates freely, without friction or different sound, connecting the motor and fan coupling using a dial indicator to find the pair, cylindrical, face error does not exceed 0.1mm, mouth up and down the value of the error does not exceed 0.1 mm, tightening the coupling bolts installed shield.
 10, contact point inspection and operation of parties, test, test normal, three confirmed the signing, clean industrial equipment inventory, clean up the site "3S", delisting

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The difference between the axial fans and centrifugal fans

Centrifugal fans and axial fans except that:
  1, centrifugal fan to pull air flow tube change media, but does not change the axial fan air flow pipe medium;
  2, the former air volume and pressure are large, the former air volume and pressure are very low;
  3, the former installation is more complex, which is relatively simple to install;
  4, the former motor and fan is typically connected by a shaft, which is generally in the fan motor;
  5, see the former Chang An air conditioning unit installed in the inlet and outlet of the boiler drum, induced draft fan, and so on, which is often installed in the duct which, or the front end of the outlet duct; centrifugal fan is a little big head wind. The axial fan is strong wind and small head. Centrifugal fans single typhoon amount is difficult to do so much and axial fans 1, both of which function Purpose: To overcome the resistance to fluid flow, the fluid must have a certain amount of pressure energy. Fans (and pump) is the fluid pressure can produce fluid machine.
2, the function definition:
 ① When the high-speed centrifugal impeller rotating by inertial force generated by the impeller can increase the pressure of the fluid. Often used in a relatively small flow rate, the pressure can be relatively larger occasions.
 ② by the axial-flow type impeller rotating at high speed, the lift generated by the impeller can increase the pressure of the fluid. Generally used in a relatively large flow rate, the pressure can be relatively smaller occasions.

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Professional custom heavy duty fans-XIANRUN

XIANRUN BLOWER blower system has extensive heavy custom design and manufacturing experience. Design can be customized according to various specified performance requirements for flow, pressure, temperature, dust content and gas composition, raised by users, fully meet customer demand. Custom-blower system, the actual performance and the performance requirements of users is more consistent, higher efficiency, less power redundancy to help users maximize energy and reduce operating costs.

XIANRUN BLOWER building materials, power generation, metallurgy, foundry, industrial environmental protection, industrial boilers and other industries have a lot of custom clients. Typical application object of cement / lime / nickel iron / ceramic sand kiln system, large-scale industrial dust removal system, ore sintering machine system, large industrial boiler systems, industrial mill systems.

Custom heavy-duty fans turbine systems typically used in critical equipment or critical processes, high reliability requirements. Therefore, we designed a custom heavy duty fans each time, will be calculated multiple serious and rigorous review.
In the manufacture of customized heavy duty fan has always been the focus of quality control and inspection department of the object. Production department will also produce custom-heavy fan smoothly arranged in priority, to ensure that production delays will not affect the user or the project completed on time production system.

To facilitate transport, bulky wind reasonable chance of being disassembled to ensure that all components can be used to transport containers. In order to ensure a smooth fan system installed, all of the components have to be disassembled easily recognizable logo. Just follow the installation instructions provided in our manual, even first-time installation of the fan system installers, can be correctly and quickly complete the assembly.

Each custom fan, we will provide a full range of customer retention technical drawings and files, users need to ensure reliable spare parts, continuous supply.

XIANRUN BLOWER technical experts would be happy to hear the door when you need to customize your needs, to answer your doubts, provide the best advice and solutions.

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China's high-quality production of Roots blower

Roots blower is a positive displacement blower, there are two trefoil relative rotation of the impeller and the casing wall by sealing the space, since each impeller is involute or epicycloidal package envelope impeller processing line, three blades of each impeller are exactly the same, while two impellers are also identical, thus greatly reducing the difficulty of processing. When impeller machining CNC equipment to ensure that the center distance of two impellers in the same situation next, no matter what position the two impellers to rotate, can maintain a certain minimum gap, to ensure gas leak within the allowable range.

Two impellers rotated in opposite directions, due to the clearance between the impeller and the impeller, the impeller and the casing, the impeller and the wall between the minimum, so that the air inlet is formed a vacuum, into the intake air chamber under the atmospheric pressure, and then, wherein each of the impeller blades and the two panels, the chassis constitutes a sealed chamber, an air intake chamber during rotation of the impeller, the blades are formed by two seal chambers constantly brought to the discharge chamber, and because row gas chamber impeller are engaged with each other, so that the air is squeezed out between the two blades, so that a continuous non-stop operation, the air from the intake port steady flow delivered to the outlet, which is the Roots blower the entire work process.

Folding property

As a result out of the inner form of clover rotor structure and reasonable housing outlet structure, so the fan vibration, low noise.

And the overall structure of the impeller shaft and impeller wear-free fan performance enduring, long-term continuous operation.

Fan capacity utilization, high volumetric efficiency, and compact structure, flexible installation.

Bearing selection is reasonable, uniform each bearing life, thus extending the life of the fan!

Fan made of imported fluorine rubber seal materials, high temperature, wear and long life.

Models range to meet the needs of different users for different purposes.

Folding operating conditions

1, the transmission medium inlet temperature is usually not greater than 40 ℃.

2, the content of the medium particles should not exceed 100mg / m3, the maximum particle size must not exceed half of the minimum working gap.

3, operation bearing temperature not higher than 95 ℃, oil temperature not higher than 65 ℃.

4, can not be higher than boost pressure range specified on the nameplate.

5, Roots blower impeller and the casing, the impeller and the side panels, the impeller and the impeller clearance factory adjusted to ensure that the gap when reassembled.

6, blower operation, the main fuel tank, fuel tank oil level in the oil level gauge must be between the two red lines.

7. Check whether the import and export joint portions forget sturdy place, the support pipe adequacy. Water used as a coolant blower, cooling water pump to check whether the installation meets the requirements.

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Used in the chemical characteristics of the centrifugal fan

1, with centrifugal fan blowing smoke dual function, one machine, you can use suction, you can also use a hair;
2, less oil or oil-free operation, the output of the air is clean;
3, with respect to the centrifugal fan and the air compressor, its pressure is much higher, often more than ten times the centrifugal fan;
4, if the pump is an integral casting, installation and use of the foot shock, the installed base of its requirements are very high pressure air GHBH
Low, even without fixed foot to normal operation, very convenient, but also very save installation costs and installation period;
5, relatively similar fan, its low noise operation, as refine high-pressure machine to launch ultra-quiet fan:
6, maintenance-free; it is only the loss of two pieces of bearings within the warranty period, with almost no maintenance;
7, high pressure aircentrifugal fan mechanical wear is very small, because in addition to bearing outside, no other mechanical contact portions, so of course, life is very long, as long as it is under normal conditions of use, 3 to 5 years is no problem of;

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Characteristics of high pressure centrifugal fan

1, high pressure centrifugal fan with blowing smoke dual function, one machine, you can use suction, you can also use a hair;

2, less oil or oil-free operation, the output of the air is clean;

3, with respect to the centrifugal fan and the air compressor, its pressure is much higher, often more than ten times the centrifugal fan;

4, if the pump is an integral casting, installation and use of the foot shock, the installed base of its requirements is very low, even without fixed foot to normal operation, very convenient, but also very cost-saving installation and installation period;

5, relatively similar fan, its low noise operation, the introduction of high-pressure ultra-quiet fan:

6, maintenance-free; it is only the loss of two pieces of bearings within the warranty period, with almost no maintenance;

7, high pressure air mechanical wear is very small, because in addition to bearing outside, no other mechanical contact portions, so of course, life is very long, as long as it is under normal conditions of use, 3 to 5 years is no problem of;

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High-quality Chinese-made centrifugal fan

. After the air flow into the fan axial impeller along the main radial flow. Such a centrifugal fan according to the principle of action made products, including centrifugal fan, centrifugal blowers and centrifugal compressors. Centrifugal fan is a complex structure of the equipment, the main air inlet valve, impeller, motor, the outlet composition. In different states, the effect of centrifugal fan is not the same. Therefore, different operating conditions partly dissenting, centrifugal fan effect will be affected. The centrifugal fan debugging to the best condition, can start from several aspects. 1, centrifugal fans allow full pressure start or step-down power, it should be noted that the current full voltage starting is about 5-7 times the rated current, voltage starting torque is proportional to the square of the voltage, when there is insufficient network capacity, should step-down start. 2, centrifugal fan during commissioning, should carefully read the product manual, check the wiring method if the same wiring diagram is consistent; should carefully check the supply fan power supply operating voltage is not meet the requirements, whether the power phase or same phase, electrical components are assigned capacity to meet the requirements. 3, the number of test less than two, one to control power, fans observed a man running, and found anomalies immediately stop inspection; First check the direction of rotation is correct; after centrifugal fan starts running, you should immediately check the operating current of each phase is balanced the current exceeds the rated current; if not normal, you should stop to check. After running for five minutes, the fan down to check whether there are anomalies, confirming that no anomalies and then start running. 4, two-speed centrifugal fan test, it should start low, check the direction of rotation is correct; must be stationary when starting the fan speed and then start to prevent high-speed reverse rotation, causing damage to the motor and switch tripping. 5, when the centrifugal fan up to speed, the fan should be measured input current is normal, centrifugal fan operating current can not exceed the rated current. If the operating current exceeds the rated current, should check the supply voltage is normal. 6, centrifugal fan motor power required is defined as the condition of the centrifugal fan and wind chassis, the required high power inlet fully open. If the air inlet fully open operation performed, the risk of damage to the motor. When the fan is best to test the fan inlet or outlet valve on the pipeline closed, the operation will gradually open the valve, until the desired working conditions, and pay attention to the fan operating current exceeds the rated current. When installing wind cabinet, subject to the following requirements: 1. When used for fire, the exhaust port and smoke machines should be interlocked, when any one of the exhaust ports open, smoke machine that is able to automatically start 2 The fan installation ambient gas entrained sticky substances, dust and hard particle content should not be greater than 150mg / m3. When the fire smoke is not required 3. Install the fan should have a damping device, install ceiling should be securely fastened. 4. When use power outlet, the fan power cable should be connected with compliance with safety standards plug; when the fan power cable is connected directly to the power line; power supply line should be fitted with a contact separation of at least 3mm all-pole power switch. Distribution should be installed motor protection devices. 7.5Kw motor should have more power down and start-up device.

We are Henan cents Run Fan Manufacturing Co., Ltd. We are professional do the fan manufacturers.

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