"Logically speaking, it shouldn't be. We have investigated all possible causes, but why does this water pump still vibrate? This is a bit strange." Zhang Du frowned and murmured.
"There are many reasons for water pump vibration, such as motor factors, loose structural components of the motor, and mass eccentricity."
"There are also factors such as the foundation and the pump bracket. This means that the contact fixation method between the driving device frame and the foundation is not good, and the foundation bolts are loose, which may cause the water pump to vibrate."
Wei Ming paced back and forth in the studio, talking while recalling the knowledge he had learned.
"But these two points can basically be ruled out, because we have experimented many times, and all the data are accurate, and it is impossible to say that there is an error."
"Yes, Wei Ming is right, both of these items should be safe."
"In addition to these two items, there is also the coupling factor."
"This means that the circumferential spacing of the connecting bolts of the coupling is poor, the symmetry is destroyed, the taper of the coupling is out of tolerance, and the matching gap between the coupling and the shaft is too large."
"But I am personally responsible for these problems, and I dare say there will be no problems with the coupling."
Zhang Du put one arm on the table, supported his chin with his hand, and slowly tapped the table with his fingers on the other hand, frowning and saying.
"Mr. Chen, what do you mean?"
Hearing this, Gao Shaoyuan turned sideways and asked.
Chen Jiguo sat on the chair next to him, staring at the water pump in front of him. He nodded in confusion and said, "What Xiao Zhang and Xiao Wei said are right. The vibration of the water pump must be for a reason."
"It's impossible to say that it was fine at first, but then it vibrated like that after not working for a long time. In that case, the water pump wouldn't work."
"Based on my experience over the years, in addition to the reasons mentioned by the two of them, there are also problems with the drive shaft and auxiliary parts, problems with the bearings and lubricants, and problems with the pipes and installation and fixation."
"However, these three problems can basically be eliminated, because we have verified that these are all qualified."
"As for the coordination between components and the factors of the water pump itself, such as cavitation and surge, you have done many experiments, and there is no problem, right?"
"right!"
Gao Shaoyuan said decisively: "These problems all have experimental data, and every data is qualified, so it is impossible to say that there is a problem based on these factors."
"If this is the case, it is a strange thing. Everything is fine, how could there be vibration?" Chen Jiguo was also a little puzzled. He has never encountered such a situation in all his years of work.
Several people were at a loss.
"Then have you ever thought that it might be the impeller?"
At this moment, a voice suddenly sounded at the door, and then under the gaze of several people, Zhao Shanhe walked in with a smile on his face and a bag of fresh fruit in his hand.
"I just passed by a fruit stall and saw fresh oranges, so I bought some for you."
Zhao Shanhe said as he put the fruit on the table.
"When it comes to research, you can't just say that you're trying to get the best of your abilities. You can't just say that you just work hard."
"Sometimes, if you jump out and let your mind empty, you may gain unexpected rewards."
"You think so? Come on, sit down and eat some oranges, and study them while you eat."
Zhao Shanhe raised his hand to greet him.
"Impeller factor?"
Gao Shaoyuan said thoughtfully: "The impeller factor you mentioned is indeed one of the possible causes of water pump vibration, but we have also done experiments and comparisons on this impeller, and there is no problem."
"For example, the impeller we use is very standard in terms of the number of blades, outlet angle and wrapping angle, as well as the radial distance between the throat partition tongue and the impeller outlet edge."
"Brother is right, Mr. Zhao, I am responsible for this impeller. I dare say there is no problem with the impeller."
"For example, for our water pump, during use, I consider the mechanical friction and wear between the impeller orifice ring and the pump body orifice ring, and between the interstage bushing and the partition bushing due to initial friction.
It’s inside.”
"But it makes no sense. After these problems have been solved, it is impossible to say that the vibration of the water pump is aggravated."
Wei Ming came over, glanced at the orange, and said calmly.
He is not in the mood to eat oranges now. Unless the vibration problem of the water pump is solved, he will remain uneasy.
"Mr. Zhao, the problem you mentioned is impossible." Chen Jiguo also said categorically that he admired Zhao Shanhe, but this admiration was limited to business operations.
You, Zhao Shanhe, run a business at a first-class level, so there’s no need to say that.
But when it comes to this kind of technical issue, you'd better stand aside. How can a layman like you know what's going on here?
Seeing the disapproving expression on Chen Jiguo's face, Zhao Shanhe smiled nonchalantly, picked up an orange at random, and slowly peeled it.
Zhao Shanhe said calmly: "Mr. Chen, you can't be too sure about anything. Although I don't know much about the structure of water pumps, I also know that there is a reason for any problem.
"
"We just need to follow the problem and find the cause and solve it."
"You have said so many reasons before that you are qualified. I also believe what you said. After all, you are professionals."
"But have you ever thought about it, the impeller factors I'm talking about are not just the ones you mentioned."
"Have you ever considered that maybe the impeller itself is eccentric in mass and it just doesn't pass the test? There is a problem with the machining accuracy."
"If this really happens, the water pump will definitely vibrate."
"this!"
Hearing Zhao Shanhe's words, Gao Shaoyuan showed a thoughtful expression.
But Chen Jiguo remained stubborn to the end, shook his head and said, "Mr. Zhao, the situation you mentioned can basically be ruled out."
"Because the water pump we are currently researching is based on Jiuquan Hardware Water Pump."
"And those water pumps all use uniform standard impellers, and there have been no vibration problems, so it cannot be a problem with the impeller."
"And you must know that this impeller was manufactured by our Qinghe No. 1 Machinery Factory in Eastern Province, so there is definitely no problem with the quality."
"Jiuquan Hardware has been cooperating with them over the years, and their reputation is also very guaranteed."
"I believe they won't shoot themselves in the foot and fool us with fake and shoddy products."
Zhao Shanhe nodded slowly and said gently: "Mr. Chen, what you said is correct. I also believe that Qinghe No. 1 Machinery Factory cannot say that it will damage its own brand."
"But have you ever thought about it? You are talking about the water pump produced by Jiuquan Hardware Era, and now we are developing a new generation of water pump. Not to mention anything else, how many matching parts have been updated?"
"Under such circumstances, are you sure that the previous impeller can still pass the standard?"
Zhao Shanhe smiled calmly.
"this!"
Chen Jiguo was stunned for a moment, and then suddenly realized.
"You are right! Mr. Zhao, you are very right! Yes, this should be the problem. Senior Engineer, what do you mean? Do you think this may be the problem?"