Properly install anti-corrosion centrifugal fans to improve efficiency


promoteAnticorrosive centrifugal fanThe element of greater work efficiency is whether it can be installed properly to make everything work normally. Many customers are not very clear about how to install after purchasing machinery and equipment. The following is a long-term business in this manufacturing industry anti-corrosion centrifugal fan manufacturer Interpretation on the spot for everyone.

1. Check the size of the roadbed and the management center specifications of each embedded crack. The appearance specification error of the roadbed should be within ±20mm, and the specification error of the management center of each embedded crack should be within ±10mm. The basic line drawing is based on the reference point of the main industrial plant project or the horizontal and vertical axis of the heating furnace. The measured basic horizontal and vertical axis error should be ±10mm, the axis spacing error should be ±3mm, and the basic design elevation should be in the middle of ±5mm. .

2. Flatten the roadbed, place anchor screws and layout pads. The pad group is usually 2 flat and 1 oblique 3 pads, and the thicker side should be laid down. The oblique pads should be used in pairs. And lift the frame about 20mm. After alignment, it should be welded firmly and not loosened. The cushion should be placed on the main supporting table of the machine and equipment, the vertical ribs of the machine frame or on both sides of the anchor screws, and should be as close as possible to the anchor screw holes under the condition of not jeopardizing the secondary grouting.

3. Coarse positioning of the lower part of the casing: pay attention to the manufacturer's installation logo, generally "A" and "B" for each unit, pay attention to the relationship between the difference and the import and export trade ventilation ducts, the rotation direction of the centrifugal impeller, etc. before hoisting.

4. After inserting the bell mouth of the collector into the centrifugal impeller and fixing it with fine iron wire, hoist all the rotating groups into the reserved position. Install the anchor screw, the bending degree of the anchor screw should be ≤L /100 (L is the length of the anchor screw), and the bottom of the anchor screw should not touch the bottom and edge of the hole. The anchor bolts should be well-proportioned, and the anchor bolts should expose 2 to 3 buckles. Then loosen the fine iron wire and fix the bottom of the collector and the bottom half of the shell with anchor bolts to basically adjust the gap between the centrifugal impeller and the bell mouth.

5. Leveling and aligning of the anti-corrosion centrifugal fan rotating group: the flatness between the anti-corrosion centrifugal fan main shaft bearing and the seated bearing is selected. The method of aligning: stick the magnetic field seat on the main shaft bearing, and tilt the dial indicator head toward the rolling bearing Outer or seated bearing spring end surface (both upper bearing end cover production processing surface). At this time, when the spindle bearing is rotated for about seven days, the reading of the needle does not exceed 0 or 15mm, and the reading value is the vertical condition of the seated bearing and the spindle bearing.

6. Motor ground leveling and alignment: adjust the parallelism of the anti-corrosion centrifugal fan and the motor spindle bearing (the ground leveling and alignment of the coupling). Use several dial indicators to align them, two in the radial direction and one in the axial direction. Each axis rotates 90 degrees, records statistical data, accurately measures the readings of its front, rear, left, and right, and adjusts the parallelism to make the deviation ≤ 0, 05mm. And there must be a 10mm gap between the two backrest wheels. After the correction, some statistical data such as the aspect ratio of the re-examination axis management center will be recorded.

7. After aligning the anticorrosive centrifugal fan, carry out the installation and hoisting of the upper buckle cover of the shell, the current collector and the shell. Asbestos rope should be placed between the two shells. Tighten the connecting anchor bolts. The four-corner anchor bolts should be well-proportioned. Taking the centrifugal impeller as the standard, adjust the gap between the centrifugal impeller and the bell mouth stage again.

8. Install the steam inlet box, channel adjustment baffle door and the rest of the anti-corrosion centrifugal fan, adjust the baffle to rotate flexibly, otherwise you need to add grease to rotate until it rotates flexibly before installation. When installing, the blade should be fixed firmly, and there should be sufficient swelling gap with the casing. The adjustment of the actual operating equipment should be flexible and appropriate, the posture should be the same, and the opening degree markings should be consistent with the specifics. Pay attention to the opening position, and not reversing. The steam inlet direction is the same as the rotation direction of the centrifugal impeller.

9. The layout of the cooling circulating water and grease pipelines should conform to the requirements of the engineering drawings, the layout should be appropriate, beautiful and generous, and there should be no dirt in the pipelines.

The above content is the proper installation of the anticorrosive centrifugal fan. Grasping this professional knowledge makes the application of the machine and equipment easier.

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