The next days were spent collecting feed and feeding the fish.

Since July, the water pump borrowed from the reservoir was taken away by the maintenance team for emergency rescue and has not been returned.

Lu Changhua took the initiative to go to the material warehouse to cancel the formalities for borrowing the machine, but did not borrow it again.

Being treated like this makes people feel uncomfortable, let alone Lu Changhua?!

Lu Changhua had seen an aerator in his previous life. The principle was actually very simple, which was to forcibly pump air into the water to dissolve the oxygen in the air into the water.

Knowing this principle, he kept wondering, how can it be done?

He suddenly remembered that Lao Lu's rubber-tired truck seemed to have an air pump and an air tank. Because his rubber-tired truck had an air brake, he needed these devices.

These days, many machines and equipment cannot be bought casually. For example, the accessories of agricultural machinery companies are only for public use, not private. People who want to buy them will not sell them to you.

Lu Changhua had no choice but to turn to Lao Lu.

On this day, he came to the team headquarters and observed Lao Lu's car.

"Xiao Lu, what are you doing?"

Lao Lu came out of the office and saw Lu Changhua looking down at the car, and asked curiously.

"Master Lu, does your air pump work well? Is it easy to break?"

When Lu Changhua saw Lao Lu coming back, he straightened up, took out cigarettes and handed him one.

Lao Lu reached out to take it, put it in his mouth, and the cigarette moved up and down as he spoke.

"It's pretty good. The quality is pretty good and it's not broken."

Lao Lu reached into his pocket and took out a box of matches.

"Why, why do you ask this?"

Lao Lu was curious, this little Lu never cared about this.

Stab~~

Lu Changhua struck a match and reached for Lao Lu's cigarette.

"Oh, I'll do it myself."

As Lao Lu spoke, he stretched out his cigarette and lit it on the match. He took two puffs and puffed out a stream of green smoke.

"Master Lu, your air pump is broken and you need to buy a new one. This air tank is also leaking and needs to be replaced."

Lu Changhua pointed at these equipments like a master and said.

"What?"

The cigarette in Lao Lu's mouth almost dropped.

These days, if you use it improperly or damage the equipment, you will be criticized and punished. This is a major work mistake.

Replacement of equipment requires a report from the repairman, not the driver himself.

Now Lao Lu's rubber-tired trucks belong to the company, and he has not yet contracted them personally.

"Xiao Lu, what do you mean?"

Lao Lu was confused and didn't understand why.

"Come, come, come. Master Lu, let me tell you..."

Lu Changhua pulled Lao Lu aside and whispered to him in a low voice.

"That won't work..."

"Xuxu, lower your voice..."

"this……"

"We will not harm the public or enrich our private interests..."

"Then..."

"I'll give you money..."

"..."

After half an hour of ideological work, Lao Lu reluctantly agreed to Lu Changhua's suggestion.

His air pump is broken and needs to be replaced with a new one.

These days, if something breaks, it’s time to repair it instead of replacing parts.

As for the repairman, Lu Changhua is still a favor.

Through Lao Pan making peace in the middle, Lu Changhua smoked a cigarette, and the matter was over.

Lao Lu drove the car to the maintenance team to report for repair, saying that the air pump was broken. After the repairman came to see it, he reported that it could not be repaired and that parts needed to be replaced.

This application was reported to Li Zhenguo.

Lao Lu's rubber-tired truck is a special transport vehicle for the company. It is an important means of transportation between the company and the field. If it didn't have brakes, what would it be like?!

After Li Zhenguo confirmed the situation, he signed immediately.

Later, Han Jianhua also exercised his authority as the supreme leader.

"This Xiao Lu, what happened? The brakes were damaged?"

So I signed it.

Within a week, parts were sent from the agricultural machinery company in Beining County.

Lao Lu's rubber tire truck was replaced with a brand new air pump and air tank.

The old equipment on his car was a scrap.

Naturally, it fell into the hands of Lu Changhua.

"Master Pan, make me a shelf to put these together."

"OK."

According to Lu Changhua's instructions, the air pump and air tank were installed on the iron frame.

These alone are not enough, a power system is also needed.

The air pump needs an engine or motor to power it to rotate, so that it can produce high-pressure gas. After the gas enters the gas storage tank, it is passed to the water through the rubber pipe.

In principle, the higher the speed of an air pump, the more high-pressure gas it generates. But everything has an upper limit. If the speed exceeds the upper limit of the air pump, the air pump will really break down.

So using a motor is not possible.

Lu Changhua also does not have a matching motor. If he uses a used motor from other machines, the air pump may be destroyed.

Only engine power can be used. After all, the speed can be adjusted through the throttle, which makes the air pump safer.

It sounds like a coincidence.

Lao Pan has an engine in his hand. But this engine is the happiness 250 engine produced by Shanghai Motorcycle Manufacturing Factory.

Single cylinder, two-stroke, 10 horsepower, 7.3 kilowatts.

Lao Pan accidentally discovered this when he went to the workshop. The motorcycle had been scrapped, but the engine and gearbox were still intact, so Lao Pan dismantled it for five yuan.

This time Lao Pan changed hands and handed over fifteen yuan to Lu Changhua.

"Okay, put it on for me."

In the eyes of the fitter masters, there is nothing they cannot do.

After the engine is installed, a gear plate is installed outside the gearbox and air pump, and a chain drive is used in the middle.

Use a plastic pot as a temporary fuel tank and insert a fuel pipe to connect it to the engine's carburetor.

He stepped on the engine.

The transmission is in first gear and the chain is turning.

The air pump at the back also started working suddenly.

After stabilizing for a while, shift it into second gear, the chain will rotate faster, and the air pump will increase the force of compressed air.

In ten minutes, the pointer of the pressure gauge has pointed to 2.5 kilograms, and if it goes higher, it will enter the red zone, 3 kilograms.

Open the valve of the gas tank, and the rubber tube sprays high-pressure gas.

It’s done.

After running for another half an hour, and seeing that there was no problem, the engine was shut down.

He found a trolley and several people worked together to load the iron monster onto the trolley.

He and Hu Dagui pushed to the reservoir together.

It took half a month to make this aerator.

Place this monster directly on the bridge head of the simple trestle.

Then it started up and started working quickly.
To be continued...