CN102247962B - Method for descaling water pipe - Google Patents

Abstract

The invention relates to a method for descaling a water pipe, comprising the following steps of: preparing a sodium hypochlorite and sodium chloride mixed solution with certain concentration, and hermetically preserving the sodium hypochlorite and sodium chloride mixed solution in a light-proof way; injecting the sodium hypochlorite and sodium chloride mixed solution into a hermetic light-proof water tank, and lowering the concentration of the sodium hypochlorite and sodium chloride mixed solution; injecting the diluted sodium hypochlorite and sodium chloride mixed solution inside the hermetic light-proof water tank into the water pipe to be descaled, and injecting a certain amount of air into the water pipe to be descaled at the same time to promote reaction; and injecting clear water into the water pipe to be descaled to clean the water pipe to be descaled. The method provided by the invention has the advantages of simple raw materials, low cost, good descaling effect, safety and practicability without generating harmful substances.

Description

A method for descaling water pipes

technical field

The present invention relates to a method for descaling, in particular to a method for descaling water pipes.

Background technique

Whether in industry or in life, water pipes are inseparable, and water pipes are prone to scale, especially in today's serious environmental pollution. Increased water pollution will also speed up the formation of scale, which is very harmful to human health. It will also greatly shorten the service life of water pipes, and if scale is produced in industrial water pipes, it will hinder the progress and quality of its production; of course, descaling of water pipes not only needs to consider the effect, but also needs to be safe. It is harmless to the human body and non-corrosive, but the descaling agents currently on the market are difficult to achieve this purpose.

Contents of the invention

In order to overcome the deficiencies in the prior art, the present invention provides a method for descaling water pipes, comprising the following steps:

1) Prepare a mixed solution of sodium hypochlorite and sodium chloride, wherein the mass concentration of the sodium hypochlorite solution is 35.0-65.0%, and the mass concentration of the sodium chloride solution is 2.0-5.0%, and the mixed solution is sealed and stored away from light;

2) Inject the above-mentioned mixed solution of sodium hypochlorite and sodium chloride into the sealed light-proof water tank until the volume of the mixed solution is equal to 2.0~6.0% of the volume of the sealed light-proof water tank, and fill the water tank with water;

3) Inject the solution in the above-mentioned sealed and light-proof water tank into the water pipe to be descaled, and at the same time, inject air with a flow rate of 3.0~7.0% of the water pipe to be descaled into the water pipe to be descaled;

4) Pour clean water into the descaled water pipe to clean the descaled water pipe.

The main component of scale in water pipes is calcium carbonate and other precipitates. Sodium hypochlorite is a substance with strong oxidizing properties. In addition to dissolving the above-mentioned precipitates, it also has a certain bactericidal effect; After the substance reacts, the substance produced will not endanger human health. Therefore, it is safe to use sodium hypochlorite to remove scale from water pipes.

In addition, the sodium hypochlorite solution needs to be stored in a sealed and dark environment to avoid premature reaction; and the addition of sodium chloride can slow down the positive reaction of sodium hypochlorite and prolong the storage time of the sodium hypochlorite solution.

Therefore, it is necessary to configure a mixed solution of sodium hypochlorite and sodium chloride, wherein the mass concentration of the sodium hypochlorite solution is 35.0 to 65.0%, and the mass concentration of the sodium chloride solution is 2.0 to 5.0%, and the mixed solution is sealed and stored away from light; The sodium chloride described above belongs to the stabilizing agent, which can stabilize the reaction of sodium hypochlorite. If the mixed solution is not fully dissolved and does not affect the effect, inject it into the sealed light-proof water tank until the volume of the mixed solution is equal to 2.0-2.0% of the volume of the sealed light-proof water tank. 6.0%, fill up the water tank to dilute the mixed solution of sodium hypochlorite and sodium chloride.

Inject the solution in the above-mentioned sealed and light-proof water tank into the water pipe to be descaled, and at the same time, inject air with a flow rate of 3.0~7.0% of the water pipe to be descaled into the water pipe to be descaled. At the same time, it can also play a role in sterilization; inject clean water into the water pipe to be descaled, clean the water pipe to be descaled, and prevent sodium chloride from remaining in the water pipe.

In order to further realize the method for descaling water pipes, the mass concentration of the sodium hypochlorite solution is configured to be 46.0%, and the sodium hypochlorite solution with such an amount and mass concentration has a stronger ability to remove scales from water pipes.

In order to further realize the method of water pipe descaling, the mass concentration of the sodium chloride solution is configured to be 3.5%. The sodium hypochlorite solution with such a weight and mass concentration is most suitable for removing scales with a thickness less than 1.0 mm, and can completely remove scales. .

In order to further realize the method of descaling the water pipe, inject the mixed solution of sodium hypochlorite and sodium chloride in the water tank into the water pipe to be descaled at a flow rate of 1.2~2.3m/s. When the flow rate is controlled within this range, the descaling effect is very good .

In order to further realize the method of water pipe descaling, the process of injecting the mixed solution of sodium hypochlorite and sodium chloride in the water tank into the water pipe to be descaled is divided into preliminary descaling and complete descaling, and the flow rate of the initial descaling is 1.2~1.6 m/s, the complete descaling flow rate is 1.6~2.3 m/s, the complete descaling flow rate is greater than the preliminary descaling flow rate, and the descaling rate can be improved by using the water pipe to speed up the descaling speed.

In order to further realize the method for descaling water pipes, the preliminary descaling exceeds 20 seconds, and the complete descaling exceeds 45 seconds. This operation is suitable for descaling common water pipes in the market.

The present invention is configured with a certain concentration of sodium hypochlorite and sodium chloride mixed solution, and the mixed solution is sealed and stored away from light; the above-mentioned mixed solution of sodium hypochlorite and sodium chloride is injected into a sealed light-proof water tank, and the concentration of the mixed solution is reduced. Inject the diluted mixed solution in the above-mentioned sealed light-proof water tank into the descaling water pipe, and at the same time, inject a certain amount of air into the descaling water pipe to promote the reaction; the raw material of the present invention is simple, the price is low, and the descaling effect Well, no harmful substances will be produced, safe and practical.

Description of drawings

no picture.

Detailed ways

Example 1:

1) Configure a mixed solution of sodium hypochlorite and sodium chloride, wherein the mass concentration of the sodium hypochlorite solution is 46.0%, and the mass concentration of the sodium chloride solution is 3.5%, and the mixed solution is sealed and protected from light;

2) Inject the above-mentioned mixed solution of sodium hypochlorite and sodium chloride into the sealed light-proof water tank until the volume of the mixed solution is equal to 2.0~6.0% of the volume of the sealed light-proof water tank, and fill the water tank with water;

3) Inject the solution in the above-mentioned sealed water tank into the water pipe to be descaled, and at the same time, inject air with a flow rate of 3.0~7.0% of the water pipe to be descaled into the water pipe to be descaled, wherein the mixed solution in the above-mentioned sealed light-proof water tank is injected The process of descaling water pipes is divided into preliminary descaling and complete descaling. The flow rate of the preliminary descaling is 1.2~1.6 m/s, the time control of the initial descaling is 25s, and the flow rate of the complete descaling is 1.6~1.6 m/s. 2.3 m/s, the time for complete descaling is controlled to exceed 50s;

4) Pour clean water into the descaled water pipe to clean the descaled water pipe.

This method can remove the scale of the water pipe very well, it is non-corrosive, harmless to the human body, and it can also have a sterilizing effect.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (6)

1. the method for a descaling water pipe comprises the steps:

1) configuration clorox and sodium chloride mixed solution, wherein, liquor natrii hypochloritis's mass concentration is 35.0 ~ 65.0%, the mass concentration of sodium chloride solution is 2.0 ~ 5.0%, and this mixed solution sealed keeps in Dark Place;

2) above-mentioned clorox and sodium chloride mixed solution are injected sealing lucifuge tank, until described mixed liquor volume equals to seal 2.0 ~ 6.0% of lucifuge tank volume, toward the tank topped up with water;

3) solution in the above-mentioned sealing lucifuge tank is injected by the scale removal water pipe, simultaneously, toward being injected by the air of scale removal water pipe flow 3.0 ~ 7.0% by scale removal water pipe the inside;

4) toward being injected clear water in the scale removal water pipe, clean by the scale removal water pipe.

2. the method for descaling water pipe according to claim 1 is characterized in that, described liquor natrii hypochloritis's mass concentration is configured to 46.0%.

3. the method for descaling water pipe according to claim 1 and 2 is characterized in that, the mass concentration of described sodium chloride solution is configured to 3.5%.

4. the method for descaling water pipe according to claim 1 and 2 is characterized in that, is 1.2 ~ 2.3m/s with the clorox in the described tank and the injection of sodium chloride mixed solution by the flow velocity of scale removal water pipe.

5. the method for descaling water pipe according to claim 4, it is characterized in that, clorox in the described tank and the injection of sodium chloride mixed solution are divided into preliminary scale removal and fully scale removal by the process of scale removal water pipe, described preliminary scale removal flow velocity is 1.2 ~ 1.6 m/s, and described complete scale removal flow velocity is 1.6 ~ 2.3 m/s.

6. the method for descaling water pipe according to claim 5 is characterized in that, described preliminary scale removal surpasses 20s, and described complete scale removal surpasses 45s.