1. Manual lifting pump
This is a relatively simple suction pump. The structure mainly includes piston, pump body and other parts. The piston reciprocates in the pump body to realize the suction function. When the piston is lifted, the internal space of the pump body increases, the pressure decreases, and the sucked material is sucked into the pump body under the action of the external atmospheric pressure; when the piston is pressed down, the sucked material is discharged out of the pump body. Since this suction method relies on manual operation of the piston movement, it is suitable for some small suction operations that do not require high suction speed and efficiency, such as the suction transfer of a small amount of reagents in some small chemical experiments, or the extraction of liquids from some small containers in the home. It is relatively simple to operate, easy to master, does not require additional energy supply, and has low cost. However, due to its reliance on manpower, the suction efficiency is limited, and long-term continuous operation will make the operator feel tired.
2. Manual diaphragm suction pump
The main components include elastic diaphragm, pump body, water inlet and outlet, etc. The characteristics of the diaphragm are good elasticity and can deform under the action of force. During operation, the periodic deformation of the diaphragm changes the volume in the pump chamber. When the diaphragm expands outward, negative pressure is formed in the chamber, and the pumped material can enter; when the diaphragm contracts inward, the pressure increases and the material is discharged. This pump has good adaptability to the pumped medium, and is particularly suitable for pumping shear-sensitive fluids or fluids containing tiny solid particles. For example, it can be used in the suction transfer of some chemical agents containing tiny impurity particles, or when sewage treatment requires the extraction of water samples containing solid impurities. Due to the barrier of the diaphragm, impurities can be prevented from entering the pump body and causing damage to the internal structure. And it is widely used in many different fields. For example, the AJ059 manual diaphragm suction pump can be used for rapid drainage of tanks, wells or pools, and can also transfer toxic and harmful liquids. It is easy to carry and install with full manual operation.
3. Manual vacuum suction device
It is usually composed of a main body, a piston, a cylinder, a backflow prevention valve, a pressure measurement adjustment unit and other parts. The working process is to suck air and other gases through the reciprocating motion of the piston in the cylinder to form a vacuum environment. The backflow prevention valve can prevent the backflow of the suction force and ensure the suction effect. The pressure measurement and adjustment part is conducive to the measurement and adjustment of the pressure, and the pressure during the suction process can be set. Some manual vacuum suction devices will also be equipped with a body fluid collection part to facilitate the collection of extracted body fluids or other liquids in medical or scientific research scenarios. It is mainly used in scenarios where a vacuum environment needs to be generated, such as creating a vacuum environment in the laboratory for some specific experiments, cupping therapy in the medical field, or extracting body fluids from patients. In daily cupping therapy, this device has the advantages of easy use, low cost, and low operating noise compared to electric vacuum suction devices. It is suitable for simple and convenient home use or some small-scale operations in clinics.
4. Manual sputum suction device
It consists of a pump, a piston, a handle, a sputum storage chamber, a sputum suction tube, and a sputum discharge tube joint. The working principle is to generate negative pressure in the cylinder by pulling the pump (equivalent to a piston), thereby sucking out substances such as sputum. It is mainly used for sputum suction operations in the medical field, especially in transportation, in the field, or other scenarios where there is no power supply but sputum suction treatment is required. For example, in the military combat rescue and medical treatment, as well as in hospitals or homes, timely suction of sputum is required when there is respiratory mucus or vomiting. The lightweight manual sputum suction device has the characteristics of no power supply, small size, light weight, strong attraction, compact structure, easy to carry, low cost, and strong durability. It can meet the needs of sputum suction in emergency situations or mobile places. However, its operation process is more laborious than some electric sputum suction devices, and it has certain requirements on the operator's proficiency in operation to avoid causing harm to the patient.