Can vertical pumps be used with horizontal motors?
Thread Content
First, let’s talk about the reason for this problem--------------------------------------------------------------- We are Party C, making membrane filtration equipment. Party B pressed hard and went to Alibaba to order a vertical fluoroplastic centrifugal pump from a pump supplier in the province with fast delivery. We don’t understand that pumps only provide parameters for merchants to help select models. After arriving, I found that the motor shaft was pressed hard against the fan cover, and the motor rotation was blocked. The supplier said that the motor shaft of the fluoroplastic pump was customized and lengthened. The fan cover was standard and not specially customized. Just tap it and it would be fine. We had to reposition the fan cover and drill holes to secure it. Party B goes to Party A for installation, and the entire process is installed for Party A’s acceptance. Party A said that it is strictly prohibited to use horizontal motors for vertical pumps. This reminds me that the pump motor has a mounting base. Party B's righteous feedback said that the use of horizontal motors for vertical pumps was not compliant. If an accident occurred and someone died, Party A, Party B and Party C would all be held responsible. In addition, YB3 series motors have Level 2 energy efficiency, and the motor is labeled with Level 3 energy efficiency. I checked the nameplate of the pump and it was 89.7%, which is also level 3 energy efficiency according to the standard. ----------------------------------------------------------------------------- The question is, can vertical pumps not be able to use horizontal motors? Will serious accidents really occur if horizontal motors are used? Which standard emphasizes that if I need to contact the pump merchant for a replacement, I must have a suitable name. (I have been entangled many times before because it was not a second-level energy efficiency product. There was also an abnormal noise in the pump of another small device. The return for repair proved that foreign matter entered the pump and was not due to the quality of the pump. However, the merchant paid extra for logistics and the merchant did not answer my calls.)
YB3 is the third level of energy efficiency, and YBX3 is the second level of energy efficiency.
This post was last posted by 3983596_FPPZ edited on 2018-12-11 15:09 Generally smaller motors (the frame number of the vertical motor B5 type generally does not exceed 225), coaxial pumps with very small axial force can be used instead (only indoors). However, because different horizontal and vertical motor bearings bear different axial and radial forces, the rolling bearing forms will be different. In this case, they cannot be replaced. Energy efficiency requirements are * * There is little difference between the national policy requirements and actual use. For example, if the efficiency of a pump is very low at 25%, then the difference between the efficiency of the motor is 97% and 98%...
Because the weight of the motor rotor can be borne by the radial bearing when used horizontally, but the radial bearing cannot bear the axial force of the rotor when used vertically. You can ask the motor manufacturer
Thank you, 11KW motor. But the pump supplier specializes in pumps, and the delivery is fast. The matching of pumps and motors should be mature. Are there any industry standards for Party A's failure to pass the acceptance inspection?
There is no standard to define this. Besides, how can we tell that the motor is a horizontal motor and it only lacks the rain cover on it? Party B does not agree. If it is just the subjective opinion of a leader or someone, then through explanation and commitment, the other party may accept it. It depends on whether the relationship and business between the two parties are done well.； If Party B has clear document provisions, then there is no choice but to change them.
This is the motor, the pump is vertical, and the motor has a horizontal mounting base. The pump manufacturer must often make this kind of pump, but the motor is not perfectly matched.
This post was last posted by 3983596_FPPZ edited on 2018-12-11 16:01 The merchant is really cheating: @, this is too confusing. No wonder, in this situation, no one will pass. It is normal for customers to be angry. If you use a B35 motor as a V1 motor, you should find a merchant to replace the motor.
This post was last posted by 3983596_FPPZ on 2018-12-11 16:15 The editor should be able to use it, but it is not used in this way. It is an inappropriate analogy.: You go to a restaurant and order a table of food. The food is delicious, but it just looks like shit... You can't pay.
It’s not just a matter of the rain cover, horizontal and vertical types cannot be mixed, the bearings are different. Generally speaking, the vertical type is slightly more expensive than the horizontal type. In addition, the secondary energy efficiency is also * * If the customer is serious about the recommendation, they can refuse to accept it.
Fluorine-lined pipeline pumps and hollow shaft motors take a long time to order. The construction period here is about 1 month. Maybe your delivery date is tight, so the supplier will use this kind of motor instead. If the acceptance fails, you can contact us for a replacement as soon as possible.