CN104675681A - Miniature air-liquid pump - Google Patents

Abstract

The invention discloses a miniature gas-liquid pump. The miniature gas-liquid pump comprises a gas sac, a first gas-liquid check valve and a second gas-liquid check valve. Each of the first gas-liquid check valve and the second gas-liquid check valve comprises a duckbill valve and a fixing sleeve, and two sides of each gas-liquid check valve are provided with an inlet and an outlet respectively. The miniature gas-liquid pump can be formed only by adoption of the two gas-liquid check valves and the gas sac. When the gas sac is extruded, gas or liquid in the gas sac is discharged through the outlets, the gas sac recovers under the elastic action, gas or liquid can be sucked from the inlets through the gas-liquid check valves, the gas or liquid in the gas sac can be discharged through the outlets when the gas sac is extruded again, and accordingly the manual miniature gas-liquid pump is formed after repeated extrusion and release. The miniature gas-liquid pump is small in size and simple in structure and can be used for not only delivering gas or liquid but also serving as a manual vacuum pump, thereby being extensive in application range.

Description

A micro air-liquid pump

technical field

The invention relates to a miniature gas-liquid pump, which belongs to the field of fluid control.

Background technique

At present, the gas-liquid pumps on the market are relatively complicated, and generally have a cylinder and a piston, such as the gas-liquid pump disclosed in Chinese patent 201320062395.9, including a cylinder, a piston, an upper end cover, a lower end cover, an air valve, a liquid inlet valve and a liquid outlet Valve; China Patent No. 201120047982.1 discloses the shaft-type serial three-cylinder automatic control gas-liquid pump. It is connected by the inner center through the shaft, and the outer circumference is connected by the left concentric flange and the right concentric flange bolts to form a series of intermediate air-driven self-control power cylinders. The through shaft at one end of the middle air-driven self-control power cylinder is connected with the left material liquid cylinder through the left coupling; the through shaft at the other end of the middle air-drive self-control power cylinder passes through the right....

The gas-liquid pump of Chinese patent 201010278745.6 is composed of a liquid pipe and a gas pipe. The liquid pipe is provided with an air delivery hole to connect with the gas pipe. The gas pressure of the gas pipe is greater than the atmospheric pressure. The atmosphere communicates, and the lower port of the liquid pipe is intruded into the liquid at the height of water lifting, and the water body is raised by pressurized gas, and it can also be composed of two or more gas-liquid pumps.

Contents of the invention

Aiming at the above technical problems, the present invention proposes a micro gas-liquid pump with simple structure, low cost and simple operation.

The present invention adopts following technical scheme to realize:

A miniature gas-liquid pump, comprising a hollow elliptical air bag made of elastic material, a first gas-liquid one-way valve, a second gas-liquid one-way valve, two ends of the air bag are respectively provided with Connect the airbag inlet of the first gas-liquid one-way valve and the airbag outlet for connecting the second gas-liquid one-way valve. The first gas-liquid one-way valve includes a gas-liquid inlet, a first duckbill valve fixing sleeve, a first The duckbill valve, the sealing sleeve of the first duckbill valve, the outlet of the first gas-liquid one-way valve connected to the inlet of the airbag, the first duckbill valve is made of elastic material, the inlet end is a hollow cylindrical structure, and the outlet end is A duckbill-shaped structure with a cutout in the middle, the first duckbill valve is set in the first duckbill valve fixing sleeve, the cutout faces the airbag inlet, one end of the first duckbill valve sealing sleeve is connected to the first gas-liquid one-way The valve outlet is connected, and the other end is connected with the outer wall of one end of the first duckbill valve fixing sleeve, and the other end of the first duckbill valve fixing sleeve is connected with the gas-liquid inlet. The second gas-liquid one-way valve includes a gas-liquid outlet with the same shape as the gas-liquid inlet, a second duckbill valve fixing sleeve with the same shape as the first duckbill valve fixing sleeve, and a valve with the same shape and material as the first duckbill valve. The second duckbill valve, the same shape as the first duckbill valve sealing sleeve, the second duckbill valve sealing sleeve, the second gas-liquid one-way valve inlet connected to the outlet of the airbag, the second duckbill valve is arranged on the second duckbill In the fixed sleeve of the valve, the cut is facing away from the outlet of the air bag. One end of the sealing sleeve of the second duckbill valve is connected to the gas-liquid outlet, and the other end is connected to the outer wall of one end of the second duckbill valve fixing sleeve. The second duckbill valve The other end of the mouth valve fixing sleeve is connected with the inlet of the second gas-liquid one-way valve.

Further, the material of the airbag is rubber or silicone.

Further, the material of the first duckbill valve and the second duckbill valve is silicone or rubber.

When transporting gas or liquid, squeeze the airbag, the gas or liquid in the airbag will be discharged through the outlet, and the airbag will recover its shape under the action of elasticity, and the gas or liquid will be sucked in from the inlet through the first duckbill valve, and squeezed again, the airbag The gas or liquid inside is discharged through the second duckbill valve and the outlet, squeezed and released repeatedly, forming a manual miniature gas-liquid pump. When used as a vacuum pump, squeeze the airbag, the air in the airbag will be discharged through the outlet, and the airbag will recover its shape under the action of elasticity, and it will suck air from the inlet. At this time, if the airtight container connected to the inlet is connected to the inlet The gas in the container will be continuously pumped away, and at this time, a negative pressure will be formed in the container, that is, a vacuum. This is a manual vacuum pump, and the pressure in the container connected to the outlet will constantly increase, which is an air pump, thus forming a positive and negative pressure generating device. Compared with the existing gas-liquid pump, the present invention has the following characteristics:

The gas-liquid pump is small in size, simple in structure, easy to carry, simple and reliable in manual operation, not only can transport gas or liquid, but also can be used as a manual vacuum pump, and has wide application occasions.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of a three-dimensional structure of a duckbill valve according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a duckbill valve according to an embodiment of the present invention.

Fig. 4 is another schematic cross-sectional view of the duckbill valve according to the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of another embodiment of the present invention.

In the figure: 1-gas-liquid inlet, 2-first duckbill valve fixing sleeve, 3-first duckbill valve, 4-first duckbill valve sealing sleeve, 5-first gas-liquid one-way valve outlet, 6- Airbag inlet, 7-airbag, 8-airbag outlet, 9 second air-liquid one-way valve inlet, 10-second duckbill valve fixing sleeve, 11-second duckbill valve, 12-second duckbill valve sealing sleeve, 13-gas-liquid outlet; 14-hose; 15-ceramic membrane filter element.

Detailed ways

The purpose of the invention of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, and the embodiments cannot be repeated here one by one, but the implementation of the present invention is not therefore limited to the following embodiments.

A miniature gas-liquid pump, comprising a hollow elliptical airbag 7 made of rubber or silica gel, a first gas-liquid one-way valve, and a second gas-liquid one-way valve, the two ends of the airbag 7 are respectively An airbag inlet 6 for connecting to the first gas-liquid one-way valve and an airbag outlet 7 for connecting to the second gas-liquid one-way valve are provided. The first gas-liquid one-way valve includes a gas-liquid inlet 1, a first duckbill Valve fixing sleeve 2, the first duckbill valve 3, the first duckbill valve sealing sleeve 4, the first gas-liquid one-way valve outlet 5 connected to the airbag inlet 6, the first duckbill valve 3 is made of rubber or silica gel , the inlet end is a hollow cylindrical structure, the outlet end is a duckbill-shaped structure with a cutout in the middle, the first duckbill valve 3 is arranged in the first duckbill valve fixing sleeve 2, and the cutout faces the airbag inlet 6, so One end of the first duckbill valve sealing sleeve 4 is connected to the outlet 5 of the first gas-liquid one-way valve, and the other end is connected to the outer wall of one end of the first duckbill valve fixing sleeve 2. The first duckbill valve fixing sleeve 2 The other end is connected with gas-liquid inlet 1. The second gas-liquid one-way valve includes a gas-liquid outlet 13 having the same shape as the gas-liquid inlet 1, a second duckbill valve fixing sleeve 10 having the same shape as the first duckbill valve fixing sleeve 2, and a second duckbill valve fixing sleeve 10 having the same shape as the first duckbill valve fixing sleeve. 3 The second duckbill valve 11 with the same shape and material, the second duckbill valve sealing sleeve 12 with the same shape as the first duckbill valve sealing sleeve 4, the second gas-liquid one-way valve inlet 9 connected to the airbag outlet 8, the first duckbill valve sealing sleeve 4 The second duckbill valve 11 is arranged in the second duckbill valve fixing sleeve 10, and its cutout faces away from the air bag outlet 8. One end of the second duckbill valve sealing sleeve 12 is connected with the gas-liquid outlet 13, and the other end is connected with the second duckbill valve. One end of the mouth valve fixing sleeve 10 is connected to the outer wall, and the other end of the second duckbill valve fixing sleeve 10 is connected to the inlet 9 of the second gas-liquid one-way valve.

The two duckbill valves are made of silicone or rubber. The inlet end is a hollow cylindrical structure, and the outlet end is duckbill-shaped with a cut in the middle. Due to the elasticity of silicone or rubber, this line is normally closed. Gas or liquid can only pass in one direction, that is, when the duckbill valve inlet flows through the duckbill-shaped outlet, the cut of the duckbill valve is stretched, and the fluid passes through. If the fluid flows from the opposite direction, the fluid flow The pressure will press and close the slit so that fluid cannot pass through, thereby realizing the function of a one-way valve.

When present embodiment is used as water pump:

As shown in Figure 5, it is used as a water pump, connect a flexible pipe 14 at the gas-liquid inlet 1, immerse the other end of the flexible pipe 14 in water, squeeze the air bag 7, the air in the air bag 7 is discharged through the air bag outlet 8, and the air bag 7 is in the The shape is restored under the action of elasticity, and the water connected to the hose 14 will be sucked in from the gas-liquid inlet 1 through the first gas-liquid one-way valve, and squeezed repeatedly. When all the air in the hose 14 is also exhausted, the airbag Will be full of water in 7, when extruding again, the water in the air bag 7 will be discharged through gas-liquid outlet 13, squeeze once like this, the water of an air bag will be discharged, so it is a manual miniature quantitative water pump.

When the present embodiment is used as an air pump:

When used as an air pump, connect a container at the gas-liquid outlet, such as a balloon, squeeze the airbag, the gas in the airbag will be discharged into the balloon through the outlet, and the airbag will recover its shape under the action of elasticity, and it will pass through the gas-liquid one-way The valve inhales air, repeats once, and the air in an air bag will be squeezed into the balloon, and the balloon will become bigger if it is constantly squeezed, so it is a manual micro-quantitative air pump.

When this embodiment is used as a vacuum pump:

When used as an air pump, connect a container at the gas-liquid inlet 1, squeeze the air bag 7, the gas in the air bag 7 will be discharged through the gas-liquid outlet 13, and the air bag 7 will return to its original shape under the action of elasticity, and it will flow from the gas-liquid inlet 1. The air in the container is sucked away by the first gas-liquid one-way valve, and once repeated, the air in an air bag will be squeezed into the balloon, and the air in the container will become less and less after being squeezed continuously. This is a manual miniature vacuum pump. . Certainly, the degree of vacuum that such a vacuum pump can achieve depends on the elastic force of the airbag 7, the greater the elastic force, the greater the suction force and the higher the vacuum degree. In fact, because the elastic force of the airbag 7 is limited, when the vacuum of the container reaches a certain level, the airbag 7 cannot bounce back, and the air pressure at this moment is its ultimate vacuum.

When the present embodiment is first used as a vacuum pump and then used as a water pump:

As shown in Figure 6, the ceramic membrane filter element 15 in the figure can filter harmful substances such as bacteria, silt, and parasites in the water, and its inside can be empty, or can be filled with various water purification materials, such as activated carbon. The gas-liquid inlet 1 of the embodiment is connected to a ceramic membrane filter element 15 placed in water, such as river water or lake water, through a hose 14 . When the airbag 7 is squeezed, the gas in the airbag 7 is discharged into the balloon through the gas-liquid outlet 13, and the airbag 7 recovers its shape under the action of elasticity, and it will inhale air from the inside of the ceramic membrane filter element 15 connected to the hose 14, and repeat once. The air of an air bag will be squeezed into the balloon, and the air constantly extruding the ceramic membrane filter element 15 will be less and less, that is, a certain degree of vacuum will be formed. The hole enters the inside of the filter element, while bacteria, silt, parasites, etc. are blocked outside the filter element. When the filter element is filled with water, it will enter the air bag 7 along the hose 14, and when the air bag 7 is squeezed, the air bag 7 will The water will be discharged from the outlet, and the water in an air bag will be discharged every time it is squeezed. This is the process in which the air-liquid valve is first used as an air pump and then as a water pump. These discharged waters are exactly the water filtered through the ceramic membrane filter element 15, which can completely filter out pathogenic bacteria such as Escherichia coli, Salmonella, Staphylococcus aureus, Legionella, cholera bacteria, etc. Sporidia and Giardia etc. are completely filtered out. During rural tourism, geological survey, exploration, fishing, or when traveling to underdeveloped areas or countries, it is often encountered that the water quality is not up to standard and cannot be drunk, especially when troops are in combat, field training, and exercises. With natural water as the water source, when the water supply system is damaged or polluted when natural disasters such as floods and earthquakes occur, using the present invention coupled with the ceramic membrane filter element 15 or other filter elements can conveniently and quickly turn the natural water into sterile The clean water that can be directly drunk can achieve the role of emergency rescue, disaster relief and even life-saving.

The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (3)

1. A miniature gas-liquid pump, characterized in that: comprise a hollow elliptical air bag (7), the first gas-liquid one-way valve, the second gas-liquid one-way valve made of elastic material, the air bag (7) Both ends are respectively provided with an airbag inlet (6) for connecting the first gas-liquid one-way valve and an airbag outlet (7) for connecting the second gas-liquid one-way valve along the long axis direction of the ellipse. The one-way valve includes a gas-liquid inlet (1), a first duckbill valve fixing sleeve (2), a first duckbill valve (3), a first duckbill valve sealing sleeve (4), and a second valve connecting the air bag inlet (6). A gas-liquid one-way valve outlet (5), the first duckbill valve (3) is made of elastic material, its inlet end is a hollow cylindrical structure, and the outlet end is a duckbill-shaped structure with a cutout in the middle, so The first duckbill valve (3) is set in the first duckbill valve fixing sleeve (2), the cutout faces the air bag inlet (6), and one end of the first duckbill valve sealing sleeve (4) is connected to the first gas-liquid unit It is connected to the valve outlet (5), and the other end is connected to the outer wall of one end of the first duckbill valve fixing sleeve (2), and the other end of the first duckbill valve fixing sleeve (2) is connected to the gas-liquid inlet (1) The second gas-liquid one-way valve includes a gas-liquid outlet (13) with the same shape as the gas-liquid inlet (1), and a second duckbill valve with the same shape as the first duckbill valve fixing sleeve (2). Cover (10), the second duckbill valve (11) with the same shape and material as the first duckbill valve (3), the second duckbill valve sealing sleeve (12) with the same shape as the first duckbill valve sealing sleeve (4) . The second gas-liquid one-way valve inlet (9) connected to the airbag outlet (8), the second duckbill valve (11) is arranged in the second duckbill valve fixing sleeve (10), and its cut is facing away from the airbag outlet (8), one end of the second duckbill valve sealing sleeve (12) is connected to the gas-liquid outlet (13), and the other end is connected to the outer wall of one end of the second duckbill valve fixing sleeve (10), the second The other end of the duckbill valve fixing sleeve (10) is connected with the second air-liquid one-way valve inlet (9). 2. The micro air-liquid pump according to claim 1, characterized in that: the material of the air bag (7) is rubber or silica gel. 3. The micro air-liquid pump according to claim 1, characterized in that: the material of the first duckbill valve (3) and the second duckbill valve (11) is silica gel or rubber.