water ring vacuum pump of repairing the worn bearing position of attention should be paid to the details

[Abstract] This paper analyzes the causes of the wear of the bearing position of the water ring vacuum pump and develops an effective on-site solution. The wear of the bearing position is solved by using the polymer composite technology.

[Key words] Water ring vacuum pump; The bearing position is worn; The shaft is worn; Site repair; Polymer composites; papermaking equipment

The water ring vacuum pump is an important auxiliary equipment for dewatering the wet end of the paper machine. For a long time, the wear of the driving part of the water ring vacuum pump is difficult to be quickly repaired on site. The rotor shaft of the impeller of the water ring vacuum pump is the power input source of the vacuum pump. Once the water ring vacuum pump shaft is worn, the vacuum pump will be shut down, affecting the continuous production of the enterprise.

Water ring vacuum pump of bearing position wear of repair case

The bearing position of a water ring vacuum pump in an enterprise is worn. The diameter of the rotor bearing position is 140mm. The bearing position is double row tapered roller bearing. The bearing model is 352028X2 double row tapered roller bearing. The wear amount is about 1mm on one side. The bearing is a two disc bearing, with a spacer ring in the middle, sharing a bearing outer ring. This time, the internal bearing position is worn.

Water ring vacuum pump of bearing position wear of repairing technology

For such problems, the traditional method is to replace the shaft directly or repair the welding machine after the shaft is disassembled as a whole.

The polymer composite repair process can be used to repair the abrasion problem of the water ring vacuum pump shaft on the site without taking the equipment offline. The good adhesion, compression resistance, corrosion resistance and other comprehensive properties of materials can meet the use requirements of various equipment components to the maximum extent, so as to effectively ensure production at the lowest cost.

The application of polymer composite online repair is a new process of the implementation plan and a cold welding technology. The online repair process will not produce high temperature, which will protect the equipment body from damage, and the repair process will not be limited by the unilateral wear of the shaft. This technology can quickly repair the wear problem on site according to the wear size of the vacuum pump shaft, and resume production. Generally, the repair is completed within 4-6 hours.

Water ring vacuum pump of bearing position wear of on site repair process

For the wear of the rotor bearing position of the water ring vacuum pump, polymer composite materials are used, and the mold repair process is used for on-site repair. The specific repair steps are as follows:

1. Die processing: make standard split die (bilateral positioning), bearing fastening tooling and rear shoulder retainer ring.

2. Surface treatment: degrease, polish and clean to ensure that the surface is clean, dry and solid.

3. Blended materials: accurate proportion and even blending.

4. Coating material: evenly apply the material to the worn part of the water ring vacuum pump shaft, and the material thickness is slightly higher than the wear amount;

5. Install the mold: install and fix the mold with 803 release agent on the inner surface to ensure that excess materials are extruded.

6. Demoulding: After curing, remove the mold to clean up the excess materials. The materials can not be knocked, but can be removed by polishing machine, file and other tools to meet the installation requirements.

7. Assemble the bearing: adjust the coating material again, assemble the bearing in place and use tooling to tighten the bearing.

The water ring vacuum pump is the key equipment of the paper machine, and how to avoid the wear of the rotor bearing position is also the key to the long-term safe and stable operation of the paper machine.

Through the repair of the wear problem of the bearing position of the water ring vacuum pump, it can be seen that the abnormal downtime of the enterprise can be shortened, the startup rate can be improved, and the cost of maintenance can be reduced. The lower use cost and simple operation can be well applied to the wear problem of various transmission parts.

Contact us

If possible, kindly suggest please your working industry/process, working pressure, working medium, etc. Given detailed request helps to gain better-matched customized solution. Thanks for your patience.

your request will be responsed within 3 hours, kindly pay attention to your email please.

News

dry screw vacuum pump in wood processing industry

Posted on Tue, 01 Feb 2022 07:02:47 +0000

Explosion proof and high temperature resistant vacuum unit

Posted on Wed, 10 Nov 2021 07:30:11 +0000

vacuum pumps for chemical industry has high requirements

Posted on Mon, 08 Nov 2021 08:52:52 +0000

What are the applications of roots vacuum units in medicine?

Posted on Wed, 03 Nov 2021 07:57:18 +0000

The advantages of dry screw vacuum pumps make up for the disadvantages of oil-sealed vacuum pumps

Posted on Tue, 02 Nov 2021 09:05:35 +0000

dry vacuum pump for measures to avoid oil return

Posted on Thu, 28 Oct 2021 09:03:25 +0000