CN102400962A - Gas-liquid pump - Google Patents

Abstract

The invention relates to a gas-liquid pump, which consists of a liquid pipe and a gas pipe, wherein the liquid pipe is provided with a gas transmission hole connected with the gas pipe, the gas pressure of the gas pipe is higher than the atmospheric pressure, the horizontal height of the upper port of the liquid pipe is higher than the lower port, the upper port of the liquid pipe is communicated with the atmosphere to the water lifting height, the lower port of the liquid pipe is immersed in the liquid, the water body is lifted by the pressurized gas, or consists of two or more gas-liquid pumps, the upper port of a primary gas-liquid pump is connected with the lower port of a secondary gas-liquid pump and can be connected in multiple stages to form a cascade gas-liquid pump, the liquid output by the upper port of the primary gas-liquid pump and the liquid required to be input by the lower port of the: the structure is simple, the manufacture is easy, the water pumping height is not limited, the required equipment is small, the energy conversion rate is high, the investment income ratio is small, the application range is wide, and the maintenance is free.

Description

Air-liquid pump

Technical field:

The invention relates to a liquid pump, in particular to a method and device for pumping water to a predetermined height by air pressure.

Background technique:

A liquid pump is a machine that transports liquid or pressurizes the liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. The pump is mainly used to transport liquids including water, oil, acid and alkali, emulsion, Suspoemulsions and liquid metals, etc., can also transport liquids, gas mixtures, and liquids containing suspended solids. According to the working principle, it can be divided into: centrifugal pump, mixed flow pump, axial flow pump, vortex pump, jet pump, positive displacement pump (screw pump, piston pump, diaphragm pump), chain pump, electromagnetic pump, liquid ring pump, pulse pump, etc.

The various types of pumps mentioned above are used in various fields of society, and have played an absolute role in the progress of human beings and the development of science and technology. Process requirements, easy loss, limited head, etc., these shortcomings limit the application of the pump, and thus produce a variety of liquid pumps, especially water pumps.

Invention content:

The purpose of the present invention is to provide a water pump with simple structure, easy to use and unlimited pumping height.

The present invention is realized in such a way:

A gas-liquid pump is composed of a liquid pipe and a gas pipe, the liquid pipe is provided with an air delivery hole and connected with the gas pipe, and the gas pressure of the gas pipe is greater than the atmospheric pressure.

Further, the liquid pipe has two ports, namely an upper port and a lower port, the level of the upper port is higher than that of the lower port, the upper port of the liquid pipe communicates with the atmosphere, and the lower port of the liquid pipe penetrates into the liquid middle.

Further, the air delivery hole is located below the liquid level, and the height difference between the air delivery hole and the liquid surface in which the liquid pipe is immersed is less than the height difference from the air delivery hole to the lower port of the liquid pipe; or the height of the water column formed in the liquid pipe is less than that of the delivery The height difference from the air hole to the lower port of the liquid pipe.

Further, the air delivery hole is located below the liquid surface, and the height difference between the air delivery hole and the liquid surface where the liquid pipe is immersed, plus the height difference of the surface tension of the inner wall formed by the liquid being immersed in the liquid pipe, is less than the sum of the height difference between the air delivery hole and the liquid pipe. The height difference of the lower port; or the height difference of the water column formed in the liquid pipe, plus the height difference of the surface tension of the inner wall formed by the liquid immersed in the liquid pipe, is less than the height difference from the gas delivery hole to the lower port of the liquid pipe.

Furthermore, it can be composed of two or more gas-liquid pumps, the upper port of the primary gas-liquid pump is connected to the lower port of the secondary gas-liquid pump, and can be connected in multiple stages to form a cascaded gas-liquid pump.

Further, the liquid output from the upper port of the primary gas-liquid pump and the liquid to be input from the lower port of the secondary gas-liquid pump are delivered continuously through the container.

Further, the primary gas-liquid pump and the secondary gas-liquid pump can share a gas source, up to more cascades and combinations.

Further, the material of the liquid pipe is non-wetting material or a material close to non-wetting property.

Further, the diameter of the liquid pipe is about 2-10mm.

Further, the gas source pressure of the above-mentioned air pipe is atmospheric pressure, which is provided by a liquid-gas device or an air pump.

The effect and characteristics of the invention are: simple structure, easy manufacture, unlimited pumpable height, small equipment required, high energy conversion rate, small investment-return ratio, wide application range, and maintenance-free.

Description of drawings:

Fig. 1 is a schematic diagram of an air-liquid pump according to the present invention;

Fig. 2 is a schematic diagram of the gas-liquid pump cascading mode according to the present invention;

Fig. 3 is a schematic diagram of a regular U-shaped tube structure of the liquid energy collection method and device involved in the gas-liquid pump of the present invention.

Description in the figure:

1 is liquid pipe

2 is the trachea

3 is air delivery hole

4 is liquid column A

11 is the primary liquid pipe

12 is the primary liquid pipe

13 is the primary air inlet

14 is liquid column B

21 is the secondary liquid pipe

22 is the secondary trachea

23 is the secondary air intake

24 is liquid column C

25 for container

108 is horizontal pipe A

109 is air intake A

110 is outlet A

111 is water inlet A

112 is water outlet A

113 is horizontal tube B

114 is the air intake B

115 is outlet B

116 is water outlet B

117 is water outlet B

Detailed ways:

Based on the purpose of the present invention and the accompanying drawings, as well as the successful test data obtained, the principles and working conditions are illustrated from the following examples.

For example one:

As shown in the accompanying drawings, this gas-liquid pump consists of a liquid pipe 1 and an air pipe 2. Both the liquid pipe 1 and the air pipe 2 can be made of suitable materials, such as plastic pipes, especially PVC materials. An air delivery hole 3 is arranged on the top to connect with the air pipe 2, and the air delivery hole is generally arranged at the middle and lower part of the pipe fitting.

There is pressurized gas in the air pipe 1 , the gas pressure is generally greater than atmospheric pressure, and the pressurized gas can be delivered to the liquid pipe 1 through the air delivery hole 3 .

The liquid pipe 1 has two ports, namely the upper port and the lower port. The level of the upper port is higher than that of the lower port. The upper port of the liquid pipe 1 communicates with the atmosphere and has no pressure relative to the atmospheric pressure. The level of the upper port is at least The water lifting height, that is, the height of the water to be lifted, the lower port of the liquid pipe is intruded into the liquid, and the liquid described in this embodiment is essentially water, or a liquid with close properties.

When working, the air delivery hole 3 of the liquid pipe 1 is connected to the air pipe 2 and is located below the liquid level of the liquid to be extracted. The height difference between the air delivery hole 3 and the liquid surface immersed in the liquid pipe 1 is smaller than the air delivery hole 3 The height difference to the lower port of the liquid pipe 1, that is to say, when the liquid pipe 1 is put into the water, as shown in Figure 1, the liquid level will enter the liquid pipe 1 and soak through the air delivery hole 3, and there is When the pressurized gas enters the liquid pipe 1 through the air delivery hole, due to the pressure of the gas, the water body in the liquid pipe 1 will be discharged upwards and downwards at the same time. At this time, the upward water body forms a liquid column A. The air volume increases and moves upward, while the pressure at this time remains unchanged, and the water body moving downward in the liquid pipe 1 also maintains a certain height and then basically remains unchanged until the liquid column A is completely pushed out of the liquid pipe 1. At the same time as A, because there is no obstruction of liquid column A, the gas pressure in the liquid pipe 1 returns to the atmospheric pressure instantaneously, and the water body in the lower part of the air delivery hole 3 in the liquid pipe 1 naturally rises to be equal or nearly equal to the water level, but at this time There is a continuous supply of pressurized gas in the gas pipe 2, so the liquid column A will be formed on the upper part of the air delivery hole 3 in the liquid pipe 1, and the above-mentioned process will be repeated, so that the water will be discharged to the liquid pipe 1 bit by bit. The height of the port.

Therefore, in the above-mentioned process, in order to ensure that water can be delivered to the position of the upper port of the liquid pipe 1, it is necessary to ensure that the height of the water column formed in the liquid pipe is less than the height difference between the air delivery hole and the lower port of the liquid pipe. The pressurized gas in the 2 will leak from the lower port of the liquid pipe 2.

In the above embodiment, some influencing factors have not been carefully calculated. For example, the influence of surface tension on water flowing in the liquid pipe 1 is also different in different pipe diameters. In this way, it is necessary to take into account : When the gas delivery hole 3 is located below the liquid level, the sum of the height difference between the gas delivery hole 3 and the liquid surface where the liquid pipe 1 is immersed, plus the height difference of the surface tension of the inner wall formed by the liquid immersion in the liquid pipe 1, is less than the gas delivery The height difference from the hole 3 to the lower port of the liquid pipe 1; or the sum of the height of the water column formed in the liquid pipe 1 plus the height difference of the surface tension of the inner wall formed by the liquid immersed in the liquid pipe is less than the air delivery hole 3 to the liquid pipe 1 The height difference of the lower port. In this way, the upper port of the water output can be effectively delivered until the lifting height is reached.

It can be further optimized on the basis of the above. The above-mentioned single device will not be able to achieve a higher pumping height due to equipment, terrain and other influences. At this time, two or more air-liquid pumps can form a cascade structure to complete the height The basic principle is to make the same gas-liquid pump multiple, divided into primary, secondary, and third stages... until the Nth stage, the upper port of the liquid pipe of the primary gas-liquid pump It is connected to the lower port of the liquid pipe of the secondary gas-liquid pump, that is, the upper port of each stage is connected with the second stage to form a cascaded gas-liquid pump, and the liquid output from the upper port of the primary gas-liquid pump and the secondary gas The lower port of the liquid pump needs to input the liquid through the container to realize continuous alternate delivery.

Specifically, as shown in accompanying drawing 2, the cascade mode of the gas-liquid pump is made up of the following: primary liquid pipe 11, primary liquid pipe 12, primary air inlet 13, secondary liquid pipe 21, secondary gas pipe 22, Subgroup air inlet 23, container 25 are formed.

Wherein, as shown in Figure 2, the primary part is composed of the primary liquid pipe 11, the primary liquid pipe 12, and the primary air inlet 13, and is composed of the secondary liquid pipe 21, the secondary air pipe 22, the secondary air inlet 23, and the container 25. The secondary part, the pumping principle of each part is just like the aforementioned embodiment and accompanying drawing 1, the difference is that the container 25 is added as a continuous replacement delivery device, consisting of the primary liquid pipe 11, the primary liquid pipe 12, the primary air inlet 13 constitutes the primary part, and the lifting of the liquid column 14 is completed under the action of air intake from the primary air inlet 13, the liquid column 14 reaches the upper port of the primary liquid pipe 11 and overflows in the container 25, and the liquid level diffuses after accumulating to a certain height. Pass the height of secondary air inlet 23, at the same time, secondary air pipe 22 starts to add gas, the process is the same as before, will form liquid column 24 and overflow to the upper port of secondary liquid pipe 21 and overflow, that is to say, the water has been raised to a higher level Horizontal position, if you want to lift water to a higher position, just increase the number of stages, so that you can lift water or other liquids to any desired height, but as the height increases, the amount of transported liquid will decrease reduce.

That is to say, through the connection between the upper stage and the second stage, that is, the upper port of the primary gas-liquid pump is connected with the lower port of the secondary gas-liquid pump, a multi-stage connection can be formed to form a cascaded gas-liquid pump.

The primary air-liquid pump and the secondary air-liquid pump can share the same air source, up to more cascades and combinations.

Since the pipe wall of the liquid pipe has surface tension, the material of the liquid pipe is made of non-wetting material or close to non-wetting material, so that the energy utilization rate is high.

It can be found that the diameter of the above-mentioned liquid pipe is about 2-10mm is more suitable in testing.

The gas source pressure of the above-mentioned air pipe is atmospheric pressure, which is provided by a liquid-gas device or an ordinary air pump, and the water body is raised by pressurized gas to complete the pumping work.

In all embodiments of the present invention, the liquid or fluid is water.

In order to cooperate with the above-mentioned devices to complete their functions, a gas supply device is also provided here, which can be used in the above-mentioned embodiments respectively, and will be described separately below.

In the above-mentioned embodiment, positive pressure gas is used in the embodiment, which can be said to be a kind of air pressure difference energy, and the generation method of air pressure difference energy is to set a pipeline to let the liquid pass through, and be provided with an air inlet connected to the atmosphere , when the liquid passes through, the flowing liquid in the pipeline can be mixed into the gas and separate the gas into small bubbles. If the direction of the acceleration of gravity is set as the positive direction of the velocity, then the velocity of the liquid is the component in the vertical direction and the horizontal direction of the acceleration of gravity The resultant velocity of the component, when the component of the liquid in the vertical direction of the gravitational acceleration is greater than zero, and the bubbles are gradually separated into smaller bubbles of a certain volume, the bubbles will move with the liquid; when the component of the liquid in the vertical direction of the gravitational acceleration is not greater than zero , the bubbles move upward and emerge from the water surface, and the overflow gas is collected at the place where the bubbles overflow the water surface to form a pressurized gas. In this way, the kinetic energy and potential energy contained in the liquid are collected and converted into air pressure differential energy including positive pressure difference. The differential energy can be used as power to drive other devices.

Now describe in conjunction with the embodiment and accompanying drawing 3, the device made based on the method of the present invention is mainly composed of pipelines, in the shape of a regular U-shaped tube, as shown in Figure 3, the two nozzles of this U-shaped tube There is a certain height difference, the height of the water inlet is higher than the height of the water outlet, the water inlet is located at the high water level, and the water outlet is located at the low water level.

For the first embodiment, the following device is used to complete the air supply.

For embodiment one, if the pipeline is a positive U-shaped pipe, the positive U-shaped pipe has a water inlet A111 and a water outlet A112, and the pipe diameters of the water outlet A112 and the horizontal pipe A108 are greater than the pipe diameter of the water inlet A111, and the water inlet Place A111 is also the air inlet A109, and the air outlet A110 is set at the top of the horizontal pipe A108 of the positive U-shaped pipe, and the air outlet A110 is located at the end of the horizontal pipe A108 of the positive U-shaped pipe close to the low water level.

When the water inlet A111 and the water outlet A112 are respectively located at the upper water level and the lower water level of the water surface, the liquid will naturally flow through the positive U-shaped pipe, and the upstream and downstream liquids flow through the water inlet A111 and the water outlet A112. At this time, the gas in the atmosphere It is also mixed into the liquid through the air inlet A109, and the gas enters the liquid in the pipe, that is, when the liquid passes through, the overflowing water in the pipe can be mixed into the gas and separated into small bubbles, and the direction of the acceleration of gravity is set is the positive direction of the velocity, then the velocity of the liquid is the combined velocity of the component in the vertical direction of the acceleration of gravity and the component in the horizontal direction. When the component of the liquid in the vertical direction of the acceleration of gravity is greater than zero, the bubbles are gradually separated into smaller bubbles of a certain volume , the air bubbles will move with the liquid; when they reach the horizontal pipe A108, the flow velocity will gradually decrease due to the larger diameters of the water outlet A112 and the horizontal pipe A108, that is, when the component of the liquid in the vertical direction of the gravitational acceleration is not greater than zero, the air bubbles will move upwards Float out of the water, collect the overflow gas at the place where the bubbles overflow the water surface to form pressurized gas, and discharge it to the outlet A110 where the bubbles overflow the liquid, forming a positive pressure gas that is obviously higher than the atmospheric pressure. If the liquid in the pipe continues to flow , to obtain a continuous positive pressure difference, this pressure difference can be utilized and work done, that is to say, connecting the air outlet A110 to the air pipes 2, 12, and 22 of the above-mentioned air-liquid pump can make the pressure shown in Figure 1 and Figure 2 The pumping device shown is working, and at the same time, there is a negative pressure phenomenon at the air intake A109.

PVC is the most convenient material used for the pipelines in the above embodiments. But at the same time, the pipeline material can also be non-metallic materials such as plastics, cement, ceramics, and metal materials such as cast iron and stainless steel.

Like this, in conjunction with above-mentioned embodiment, it can be drawn that the gas energy collection method of the present invention is realized by the following method: a pipeline is set, and the pipeline is a U-shaped pipe, and the two nozzles of the U-shaped pipe are water inlet and outlet respectively. The water inlet, the elevation of the water inlet is higher than the elevation of the water outlet, and can allow the liquid to pass through, and there is an air inlet connected to the atmosphere. When the liquid passes through, the overflowing water in the pipeline can be mixed into the gas and separate the gas into small bubbles , set the gravitational acceleration direction as the positive direction of the velocity, then the liquid velocity is the combined velocity of the vertical and horizontal components of the gravitational acceleration. When the liquid’s vertical component of the gravitational acceleration is greater than zero, the bubbles are gradually separated into When there are small bubbles of a certain volume, the bubbles will move with the liquid; when the component of the liquid in the vertical direction of the gravitational acceleration is not greater than zero, the bubbles will move upward and emerge from the water surface, and the overflow gas will be collected at the place where the bubbles overflow the water surface to form a pressurized gas. When the liquid passes through, the liquid in the pipeline can be mixed into the gas and separated into small bubbles. The liquid separation bubbles are small to a certain extent, and the bubbles will move with the liquid. When the liquid flow rate decreases, the bubbles will separate from the liquid and move upwards. The separated gas is collected at the gas outlet of the pipeline, which can form an obviously pressurized gas. This air pressure is higher than the atmospheric pressure to form a positive pressure difference. In this way, the kinetic energy and potential energy contained in the liquid are collected and converted into a positive pressure difference. Or the air pressure difference energy of negative pressure difference, this air pressure difference energy can be used as power to drive other devices.

Further, the above-mentioned pipeline is a U-shaped pipeline, and the U-shaped pipe can be set as a regular U-shaped pipeline;

Further, the positive U-shaped pipe produces a positive pressure difference at the outlet;

In addition, the liquid level of the water inlet source of the above-mentioned positive U-shaped pipe is higher than the liquid level of the discharge channel at the water outlet;

In addition, the above-mentioned positive U-shaped pipe is provided with an air intake volume control device at the air intake of the pipeline, which can control the air intake volume of the pipeline;

Further, if the pipeline is a positive U-shaped pipe, an air outlet is provided on the horizontal pipe part of the positive U-shaped pipe, and the air outlet is located at the end of the horizontal pipe of the U-shaped pipe close to the low water level;

By adopting the method and device of the present invention, the kinetic energy and potential energy contained in the liquid can be conveniently collected and converted into air pressure difference energy for further utilization, and the required equipment is small, the energy conversion rate is high, the investment income ratio is small, and the application range is wide , maintenance-free.

While a preferred embodiment of the invention has been described herein, no limitation of the scope, applicability and configuration of the invention is intended. Rather, the detailed description of the embodiments will enable those skilled in the art to practice. It will be understood that appropriate changes and modifications may be made in some of the details without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A gas-liquid pump, characterized in that: it is made up of a liquid pipe and a gas pipe, and the liquid pipe is provided with an air delivery hole to be connected with the gas pipe, and the gas pressure of the gas pipe is greater than atmospheric pressure. 2. The gas-liquid pump according to claim 1, wherein the liquid pipe has two ports, an upper port and a lower port respectively, the level of the upper port is higher than that of the lower port, and the upper port of the liquid pipe communicates with the atmosphere , to the water lifting height, the lower port of the liquid pipe is intruded into the liquid. 3. The gas-liquid pump according to claim 1, characterized in that: the air delivery hole is located below the liquid surface, and the height difference between the air delivery hole and the liquid surface in which the liquid pipe is immersed is less than the distance between the air delivery hole and the lower port of the liquid pipe. The height difference; or the height of the water column formed in the liquid pipe is less than the height difference from the air delivery hole to the lower port of the liquid pipe. 4. The gas-liquid pump according to claim 1, characterized in that: the air delivery hole is located below the liquid surface, the height difference between the air delivery hole and the liquid surface where the liquid pipe is immersed, and the inner wall surface formed by the liquid immersion in the liquid pipe The sum of the height difference of the tension is less than the height difference from the gas delivery hole to the lower port of the liquid pipe; or the sum of the height difference of the water column height formed in the liquid pipe plus the surface tension of the inner wall formed by the immersion of the liquid in the liquid pipe is less than the gas delivery The height difference from the hole to the lower port of the liquid pipe. 5. The gas-liquid pump according to claims 1-4, characterized in that: it can be composed of two or more gas-liquid pumps, the upper port of the primary gas-liquid pump is connected with the lower port of the secondary gas-liquid pump, and can be Multiple stages are connected to form a cascaded gas-liquid pump. 6 . The gas-liquid pump according to claim 5 , wherein the liquid output from the upper port of the primary gas-liquid pump and the liquid to be input from the lower port of the secondary gas-liquid pump are delivered continuously through the container. 7. The air pump according to claim 5, characterized in that the primary air-liquid pump and the secondary air-liquid pump can share one air source until more cascades and combinations. 8. The air pump according to claims 1-4, 5, characterized in that the liquid pipe is made of non-wetting material or close to non-wetting material. 9. The multi-tube wheelless pump according to claims 1-4, 5, characterized in that the diameter of the liquid tube is about 2-10mm. 10. The multi-tube wheelless pump according to claims 1-4, 5, characterized in that the air source pressure of the air pipe is at atmospheric pressure, provided by a liquid-air device, or provided by an air pump.

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