Rebirth 84, starting from fish farming

Chapter 40 Homemade Aerator

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

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 by others makes people feel uncomfortable, let alone Lu Changhua? !
Lu Changhua had seen the oxygenator in his previous life.The principle is actually very simple, it is to forcefully 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 are not bought casually.For example, the accessories of agricultural machinery companies are only for public use, not private use.People who want to buy it won’t sell it to you.

Lu Changhua had to turn his mind 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 and took it, holding it in his mouth. The cigarette moved up and down as he spoke.

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

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

"Why, why do you ask?"

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 devices and said like a master.

"What?"

The cigarette in Lao Lu's mouth almost dropped.

These days, if you use it improperly and 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 truck belongs to the company, and he has not yet contracted it 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..."

"That too..."

"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 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 doesn't have brakes, what's the point? !
After Li Zhenguo confirmed the situation, he signed immediately.

Later, Han Jianhua also exercised his authority as the top 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-tired truck was replaced with a brand new air pump and air tank.

The old set of 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."

"Row."

According to Lu Changhua's instructions, the gas pump and gas 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 then 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 an option.

Lu Changhua also does not have a matching motor. If he uses a waste motor from another machine, the air pump may be useless.Only engine power can be used. After all, the speed can be adjusted through the accelerator, so the air pump will be safer.

It's a coincidence to say it.

Lao Pan has an engine in his hand.It’s just that this engine is the engine of Xingfu 250 produced by Shanghai Motorcycle Factory.

Single cylinder, two-stroke, 10 hp, 7.3 kW.

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 took it back for five yuan.

This time Lao Pan changed hands and gave 15 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 jug as a temporary fuel tank and insert a fuel pipe to connect it to the engine's carburetor.

One foot stepped on the engine.

The transmission shifted into first gear and the chain started turning.

The air pump at the back also started working suddenly.

After stabilizing for a while, I shifted it into second gear. The chain rotated faster, and the air pump increased the force of compressed air.

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

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

It became.

After running for another half an hour, and seeing that there was no problem, I turned off the engine.

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.

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

Then it started up and started working suddenly.

Because there is no one-way valve at the outlet pipe head, you need to pay attention when using it to prevent water from flowing back.

You need to pump air into the air tank first to make the pressure reach 3 kilograms, then open the air release valve, and control the air output so that it cannot be too large.

Everything is normal, and then put the outlet pipe into the water.

As soon as it entered the water, bubbles rolled upwards, creating a splash the size of a washbasin.

Lu Changhua closed the air release valve again so that the pressure in the gas tank would not decrease too quickly.

The two of them stared at the water for a while, and then they were satisfied when they saw that the air volume had stabilized and the water spray was controlled within a certain range.

"We still have to get some gas."

"Well, I'll go, I'm familiar with the oil depot."

Hu Dagui volunteered.

"Okay, you can bring a pot."

On farms these days, for personal use of gasoline or diesel, if you don’t have money to buy it, you have to ask someone to get it.

Otherwise, this is a human society.

This pot is five liters and can be used for several days.

With the homemade aerator, Lu Changhua felt much more comfortable.

Although it still rains in August and September, the temperature is very high.

It is inevitable that there will be a lack of oxygen in the reservoir.

Some time ago, there were occasional floating head phenomena. Now with the aerator, the floating head phenomenon is becoming less and less.

I turn on the aerator at about ten o'clock every day and keep it on until about 03:30 in the afternoon, five hours a day, and I can't stop it.

Due to the small amount of air release, the air intake and air outlet in the gas tank are basically balanced, and the engine rotates at idle speed, which can basically meet daily use.

Fuel consumption does not exceed two liters per day.

A cold autumn rain.

Starting from early September, whenever it rains, the weather gets colder.

This year’s autumn harvest is still being prepared in an orderly manner.

At this time, Lu Changhua was also checking his harvest.

23 crops of fodder, including five crops of soybeans and two crops of corn, were beaten into green fodder and mixed with fish food.

There are now ten crops of soybeans and six crops of corn left in the field.

Soybeans are harvested in early October, while corn is harvested around mid-October.

Only at this time can it mature.

Although mechanized harvesting on the farm is very labor-saving, it is also very wasteful, especially in years when it rains continuously before the autumn harvest, and the harvester cannot go to the ground.

If mechanical harvesting is forced, or high-stubble harvesting is used, especially for soybeans, there are still four to six pods left on many soybean stubbles, which will cause a lot of food waste and lead to a reduction in production.

Some people ask, why do we need to harvest high stubble?Can't it be lower?
If you lower the harvesting position, there is a high chance that the soybean seedlings will be uprooted and enter the harvester with the soil.

The soybeans harvested in this way will stick to the soil and become "mud-faced". When sold, the grade will become lower, or no one will buy it, causing losses.

In order to avoid this situation, as long as the fields are muddy and the harvester cannot operate normally, it can only be harvested manually.

This year, the proportion of plots harvested manually is still very large.

As for Lu Changhua's feed land, it's pretty good.

Although there is heavy rain, it is drained into the reservoir, and the ground is very dry. This way, I can harvest mechanically, and I can save a lot of worry.

(End of this chapter)