[Chemical Knowledge]：Principle of hand pump

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The hand pump is a simple but very practical human pumping tool. Its working principle is to use human power to operate the pumping pipe by hand to raise groundwater or other liquids to the ground. Such pumps are often widely used for water extraction in various rural or remote areas for irrigation, water feeding and domestic use. Next, we will introduce in detail the principle, structure and use of the hand pump, and how to maintain the hand pump. The principle of

hand pump The principle of

hand pump is to use simple mechanical principles to attract liquid from low places and transport it to high places through pipelines. The hand pump usually consists of a suction pipe, a piston, a suction valve and a discharge valve. When the pumping tube is operated by hand, the piston moves up and down, forming a vacuum, attracting liquid from a low place into the pumping tube. When the piston moves upward, the suction valve closes and the discharge valve opens, discharging the extracted liquid into a high pipe. When the piston moves down, the discharge valve closes and the suction valve opens, continuing to attract liquid into the suction pipe, thus forming a continuous pumping flow.

The structure of the hand pump

The hand pump usually consists of the following components:

1. Suction pipe: used to pump groundwater or other liquids to the ground.

2. Piston: Used to form a vacuum to attract liquid into the pumping tube.

3. Suction valve: Prevent the liquid from returning to the suction pipe when the piston moves upward.

4. discharge valve: control the discharge of liquid into the high pipe.

5. handle: used for hand operation, drive the piston movement.

6. Connecting parts: pipes and joints that connect all parts.

The use method of the hand pump

The use of the hand pump needs to follow the following steps:

1. Insert the pumping pipe into the well or pond.

2. Turn the handle to make the piston move to form a vacuum suction liquid.

3. When the liquid fills the pumping pipe, the liquid can be discharged into the high pipe.

4. Repeat the above steps until enough liquid is withdrawn.
The maintenance of
hand pump

the maintenance of hand pump is very important to ensure its long-term effective use. The following are some tips for maintaining the hand pump:

1. Clean the pumping pipe, piston and valve regularly to prevent blockage.

2. Check and replace worn parts such as seals, pistons and valves.

3. Apply lubricating oil to reduce wear and improve efficiency.

4. When the manual pump is not used for a long time, it should be stored in a dry and cool place to avoid rust and corrosion.

hand pump is an economical and practical water pump. Its operation is completely based on human strength and does not require electricity or fuel, so it is very suitable for use in remote areas and places without electricity supply. The use of hand pumps can not only provide water, but also make people feel the value of labor. Hope that hand pump can improve more people's lives.