These people from Tianyang Ceramics Factory looked at each other for a while, and finally Lu Gong opened his mouth, "Expert Hao, I didn't see any special movements from you, I just closed my eyes and listened with my ears for a few minutes, and then touched it twice with my fingers, how could I judge that there was a problem with the cylinder seal?"

"That's right, Expert Hao," Sun Guichao couldn't hold back the doubts in his heart, and then asked: "After the filter press had a slurry failure, I stayed next to the machine and listened for two whole days, and I didn't hear the sound of the machine running What is wrong, why did you only take a few minutes to hear that there was a problem with the cylinder seal?"

"Hehe," Hao Shuang touched his hairline and said with a smile: "Chief Engineer Sun, you misunderstood! Although I did try to use my ears to hear if there was any abnormal sound during the operation of the equipment, but unfortunately, like you, I didn't hear anything unusual about the sound of the equipment running. ”

I'm having fun!

It turns out that Expert Hao's judgment about the failure of the filter press cylinder was not heard by ear?

This misunderstanding is a big one!

Sun Guichao smiled embarrassedly, and hurriedly asked: "Then Expert Hao, how did you judge that the cylinder of the filter press was faulty? Could it be that you touched those two times with your fingers later?"

"Ollie!" Hao Shuang stretched out his hand to give Sun Guichao a thumbs up, and replied with a smile: "Chief Engineer Sun guessed well, it was the few times I touched my fingers in the back that I judged that there was a problem with the cylinder seal." ”

Seeing that these people around him, including Lu Gongji, were stretching their necks, waiting for themselves to continue, Hao Shuang didn't sell it, and explained: "Let's not talk about the specific reasons first, let's talk about the big problem first, that is, which direction of the factors caused the filter press to run the pulp, I think before I arrive, Chief Engineer Sun should also have a number in his heart, right?"

Sun Guichao nodded and replied: "We do know this problem, that is, the working pressure of the hydraulic oil of the filter press is low. However, there are many factors that cause the low working pressure of the hydraulic oil of the filter press. ”

"On the one hand, the wear and damage of components including axial embolic pumps, electromagnetic reversing valves and cylinder seals will cause the working pressure of hydraulic oil to be low; on the other hand, the adjustment failure of the pressure switch of the relief valve and the failure or damage of the electric contact pressure gauge will also cause the force generated by the cylinder piston to be small. ”

"With our experience, we can't tell which part or part is wrong!"

"Hehe," Hao Shuang laughed again and said, "Chief Engineer Sun, if there is a problem with other parts, it may be more troublesome to judge." However, if there is a problem with the cylinder seal, it is relatively simple to judge. ”

No way?

If there is a problem with the cylinder seal, it is relatively simple to judge?

Expert Hao, you don't rely on your high hairline to talk nonsense!

Sun Guichao felt that his three views were about to be subverted.

The sealing ring of the cylinder is set on the piston of the cylinder, which is located inside the cylinder, if the sealing ring of the cylinder is worn or damaged, resulting in oil leakage, it cannot be seen from the outside. Therefore, judging whether the sealing ring in the cylinder is worn or damaged has always been a difficult and complex technical problem.

Why did it come to Expert Hao, but thought that there was a problem with the sealing of the cylinder, and it was relatively simple to judge?

Not only Sun Guichao, but also the head of the equipment section of Tianyang Ceramics Factory and the technicians under his command were particularly shocked, and some technicians who were unrestrained and not good at covering up their inner emotions even engraved the words "You are a liar" on their faces.

In contrast, Lu Gonggong, the director of the factory, did not have such a deep understanding of the hydraulic filter press, but did not have too many expressions, and looked at Hao Shuang with great interest, waiting for him to continue.

"Expert Hao, how is it a simple method?" As the deputy factory director and chief engineer, Sun Guichao has also seen strong winds and waves, and quickly adjusted his emotions and asked Hao Shuang for advice.

"It's very simple, come and see!" Hao Shuang grabbed Sun Guichao's hand, dragged him to the filter press, pointed to a part of the filter press, and said to him: "Chief Engineer Sun, you press this part with your fingers to see what it feels like?"

Sun Guichao looked at this part of Hao Shuang's finger, which was one of the places that Hao Shuang pressed with his hand just now, so he couldn't help muttering in his heart, could it be that there is something special about this part?

While thinking, he reached out and pressed down on the part that Hao Shuang pointed out, only to feel that these places were warm to the touch, and he felt a little like he was sleeping on the kang in the countryside after an hour.

Hey?

How could it be!

It's the middle of March, and it's the time of day and spring.

There is neither a furnace nor an air conditioner in the pulping workshop, and the filter press should be cold to the touch, why is this place as warm as jade?

Sun Guichao moved his hand away from the part pointed out by Hao Shuang, and fell on the other parts of the filter press, and then the familiar cold touch returned.

Seeing Sun Guichao's surprised expression, Lu Gongji couldn't help but touch the place Hao Shuang was pointing to, and then couldn't help but cry out, "Expert Hao, what's going on, why is this part so hot?"

"Hehe," Hao Shuang proudly touched his hairline and said, "It's very simple, because this place is where the hydraulic oil leaks." Because where the hydraulic oil leaks, the friction will increase, and the temperature will rise significantly compared to other parts under the repeated movement of the cylinder piston. ”

Is it really that simple?

Lu Gonggong looked at Sun Guichao suspiciously.

Professional issues have to be judged by professionals.

In terms of machinery and equipment, Lu Collective believes that Sun Guichao, a professional, is more reliable than himself.

But he didn't want Sun Guichao to stand there, frowning and not speaking.

Obviously, it is difficult for Sun Guichao to make a direct judgment on whether Hao Shuang's statement is reliable.

The reason is very simple, before the purchase of the hydraulic filter press of Neckie, although the filter press used by Tianyang Ceramics Factory is also equipped with a hydraulic filter plate pressing device, the operation of the entire pressing device is operated by manpower, whether it is the pressure of the cylinder piston and the reciprocating running speed of the piston, there is no way to compare with the automatic hydraulic filter press of Nelly Company.

Therefore, although the old filter press often had oil leakage from the oil cylinder, due to the limited friction and reciprocating speed, there was no rise in the temperature of the oil leakage part.

However, the situation of the hydraulic filter press of Nelly Company is different, not only the piston pressure is large, but the reciprocating speed is also fast, in this case, if there is oil leakage in the cylinder, it is possible that there will be friction and heating.

But these are Sun Guichao's theoretical conjectures after all, how dare he easily judge whether what Hao Shuang said is right or wrong without actual verification?

After poking the tooth flower for a long time, Sun Guichao said: "Director Lu, if you want to verify Expert Hao's words, it's very simple, remove the oil cylinder and check it on site, isn't it enough?"

"That's right!" Hao Shuang smiled and said to Lu Gongji: "Director Lu, whether my judgment is right or not still needs to be verified by facts." ”

Seeing that Sun Guichao had no better way, Hao Shuang said this again, Lu Gonggong touched his chin for a long time, and finally made up his mind, waved his hand, and said: "That's right, practice is the only criterion for testing the truth!"