阅读说明：本技术 一种气体驱动液泵 (Gas-driven liquid pump ) 是由 吴结华 袁浩然 于杨 孙远龙 纪容昕 于 2020-04-08 设计创作，主要内容包括：本发明属于流体输送泵领域,涉及一种气体驱动液泵,包括高压气源,被输送液体储罐,被输送液体储罐顶部有排气阀,底部有出料阀,被输送液体储罐通过管道、阀门与高压气源连接。本发明无直接电力或内燃机驱动系统,因此特别适用于输送流体、以及使用环境有易燃易爆气体或液体的场所。(The invention belongs to the field of fluid delivery pumps, and relates to a gas-driven liquid pump which comprises a high-pressure gas source, a delivered liquid storage tank, an exhaust valve arranged at the top of the delivered liquid storage tank, and a discharge valve arranged at the bottom of the delivered liquid storage tank, wherein the delivered liquid storage tank is connected with the high-pressure gas source through a pipeline and a valve. The invention has no direct electric power or internal combustion engine driving system, thus being particularly suitable for the places where the conveying fluid and the using environment have flammable and explosive gas or liquid.)

1. A gas-driven liquid pump, includes high-pressure gas source, is carried liquid storage tank, its characterized in that: the top of the transported liquid storage tank is provided with an exhaust valve, the bottom of the transported liquid storage tank is provided with a discharge valve, and the transported liquid storage tank is connected with a high-pressure air source through a pipeline and a valve.

2. A gas driven liquid pump according to claim 1, wherein: a liquid level detection part is arranged in the conveyed liquid storage tank.

3. A gas driven liquid pump according to claim 2, wherein: the liquid level detection part of the conveyed liquid storage tank outputs liquid level signals to control the opening and closing of each valve.

4. A gas driven liquid pump according to claim 1, wherein: the high-pressure air source is a high-pressure air tank.

5. A gas driven liquid pump according to claim 1, wherein: the high-pressure gas source is a process gas pipeline.

6. A gas driven liquid pump according to claim 1, wherein: the liquid to be transported is injected into the liquid storage tank from the elevated tank through the valve.

7. A gas driven liquid pump according to claim 1, wherein: the valve for connecting the transported liquid storage tank with the high-pressure air source is a one-way valve.

8. A gas driven liquid pump according to claim 6, wherein: the valve for connecting the transported liquid storage tank with the elevated tank is a one-way valve.

9. A gas driven liquid pump according to claim 1, wherein: the conveyed liquid storage tank is provided with a pressure stabilizing valve.

Technical Field

The invention belongs to the field of fluid delivery pumps, and particularly relates to a gas-driven liquid pump.

Background

Fluid conveying has extremely wide application requirements in industrial and agricultural production and daily life, a pump is the core of fluid conveying, and most of the traditional pumps utilize a power device to drive an impeller, blades, a piston and a gear to move relatively in a pump body to suck and discharge fluid.

The traditional pump has unstable pressure of conveying fluid and mainly adjusts the flow rate. The mechanical relative motion abradant can cause pollution to the transported liquid, such as secondary water supply in middle and high-rise residential property, slurry transportation in food industry and the like. The fluid to be conveyed has corrosive fluids such as strong acid, strong base, strong oxidizing property and the like, and is in direct contact with moving mechanical parts, so that a pump body, an impeller, a pump shaft and a sealing element are corroded and damaged to fail or damage.

In order to solve the problems, a plurality of special pumps are developed in the practical production, such as rubber-lined pumps with large consumption in the chemical industry, tetrafluoroethylene plastic pumps, stainless steel pumps and the like, the structure and the working principle of the pumps are not changed, and the physical and electrochemical corrosion of the impeller, the pump shaft and the pump shell in high-speed relative motion still exists and is only relatively slowed down and weakened. In addition, the flow rate of other pumps such as plunger pump and gear pump is too small.

Therefore, there is a need for a new fluid delivery pump that is not limited to the thinking mode of direct contact delivery, and that does not require relative movement of mechanical parts to effect fluid transfer.

Chinese patent CN108591133B is a high-efficiency booster positive displacement pump based on gas-liquid conversion, which solves the problems of abrasion of the pump body and parts, but introduces parts such as an air compressor and a vacuum pump, so that the pump has a complex structure, many power devices, and high use and maintenance costs.

Disclosure of Invention

The invention provides a gas-driven liquid pump which can replace traditional fluid pumps such as a centrifugal pump, a piston pump, a gear pump and the like, can also be applied to occasions with special requirements on fluid delivery in daily life, is particularly suitable for delivering acid, alkali, salt and strong-oxidizing and high-corrosive fluids in chemical and printing and dyeing enterprises, can replace the traditional water pump to supply water for a secondary community in middle and high-rise residential communities, and can deliver high-purity fluids in the food and drug processing industry.

The invention provides a gas-driven liquid pump, which comprises a high-pressure gas source and a conveyed liquid storage tank, wherein the top of the conveyed liquid storage tank is provided with an exhaust valve, the bottom of the conveyed liquid storage tank is provided with a discharge valve, and the conveyed liquid storage tank is connected with the high-pressure gas source through a pipeline and a valve.

Typically, the high pressure gas source is a high pressure gas tank or a process gas pipeline.

And the liquid to be conveyed is injected into the liquid storage tank from the elevated tank through the valve.

The liquid storage tank to be conveyed is connected with the elevated tank and the high-pressure gas source through pipelines and valves. The liquid to be conveyed is fed into the liquid storage tank from the elevated tank, and then is pumped to a target device from the bottom discharge valve through high-pressure gas.

The liquid storage tank to be conveyed, the elevated tank and the high-pressure air source are connected by a check valve. The high-pressure gas can only enter the delivered liquid storage tank through the connecting valve, and the gas in the delivered liquid storage tank can not return to the high-pressure gas source, even if the high-pressure gas source is used up, the gas can not return to the high-pressure gas source. The gas in the liquid storage tank to be conveyed can not flow into the elevated tank.

Furthermore, a liquid level detection component is arranged in the transported liquid storage tank, can be a corrosion-resistant and pressure-resistant liquid level meter of any type on the market, is completely sealed in the transported liquid storage tank, and outputs liquid level information outwards through electric signals. And a servo system or an operator controls the opening and closing of each valve according to the liquid level, exhausts the gas in the conveyed liquid storage tank through an exhaust valve, opens a connecting valve between the exhaust valve and the elevated tank, supplements raw materials through the elevated tank, closes the exhaust valve, opens a high-pressure gas source valve, boosts the pressure, and opens a bottom discharge valve for output.

The conveyed liquid storage tank is provided with a pressure stabilizing valve, the air pressure in the conveyed liquid storage tank is constant, and the stability of the liquid output pressure is realized.

In large industrial systems, high pressure gas tanks may be replaced with process gas piping. The high-pressure process gas pipeline is directly connected to a conveyed liquid storage tank through a valve.

In the whole conveying process, the invention does not rely on mechanical energy, except for the pipe valve, only process gas directly contacts with liquid, thereby avoiding secondary pollution and being particularly suitable for conveying high-purity materials. When conveying corrosive fluids such as strong acid, strong base, strong oxidizing property and the like, no mechanical part is corroded, the operation is stable, and the maintenance cost is low.

The invention has no direct electric power or internal combustion engine driving system, thus being particularly suitable for the places where the conveying fluid and the using environment have flammable and explosive gas or liquid.

Drawings

Fig. 1 is a schematic view of a connection structure of a gas-driven liquid pump according to an embodiment of the present invention.

In the figure, 1, a high-pressure gas tank, 2-a conveyed liquid storage tank and 3-a head tank; 1-1, a lower valve of a high-pressure gas tank, 1-2, a connected valve of a delivered liquid storage tank, 2-1, a discharge valve, 2-2, an exhaust valve, 3-1 and a high-level tank connected valve.

Detailed Description

The present invention will be described in detail with reference to examples.

Examples

Referring to the attached figure 1, the gas-driven liquid pump mainly comprises a high-pressure gas tank 1, a conveyed liquid storage tank 2, an exhaust valve 2-2 arranged at the top of the conveyed liquid storage tank 2, a discharge valve 2-1 arranged at the bottom of the conveyed liquid storage tank 2, and a conveyed liquid storage tank connecting valve 1-2 connected with the high-pressure gas tank 1 through a pipeline. The liquid to be transported is injected into the liquid storage tank 2 from the elevated tank 3 through the elevated tank connecting valve 3-1.

In the embodiment, a liquid level detection part (not shown) is arranged in the conveyed liquid storage tank 2, and the liquid level detection part outputs a liquid level signal to control the opening and closing of each valve. Wherein, the connected valve 1-2 of the liquid storage tank to be delivered and the connected valve 3-1 of the elevated tank are all one-way valves. The tank 2 for the liquid to be delivered is provided with a pressure-maintaining valve (not shown in the figure).

Example 1

Referring to fig. 1, an exhaust valve 2-2 at the top of a delivered liquid storage tank 2 is opened to empty the delivered liquid storage tank 2; loading the liquid to be conveyed into a high-level tank 3, opening a high-level tank connecting valve 3-1, feeding the liquid to be conveyed into a liquid to be conveyed storage tank 2, and closing the high-level tank connecting valve 3-1; the high-pressure gas tank 1 inputs high-pressure gas through a valve 1-1 at the lower part of the high-pressure gas tank, then enters the liquid storage tank 2 to be conveyed through a valve 1-2 connected with the liquid storage tank to be conveyed, constant pressure is controlled through a pressure stabilizing valve, a discharge valve 2-1 at the bottom of the liquid storage tank 2 to be conveyed is opened, and the liquid to be conveyed is output at constant pressure according to valve control flow.

Example 2

Referring to fig. 1, an exhaust valve 2-2 at the top of a delivered liquid storage tank 2 is opened to empty the delivered liquid storage tank 2; loading the liquid to be conveyed into a high-level tank 3, opening a high-level tank connecting valve 3-1, feeding the liquid to be conveyed into a liquid to be conveyed storage tank 2, and closing the high-level tank connecting valve 3-1; the gas from the process gas pipeline enters the liquid storage tank 2 to be delivered through the connecting valve 1-2 of the gas and the liquid storage tank to be delivered, the constant pressure is controlled through the pressure stabilizing valve, the discharge valve 2-1 at the bottom of the liquid storage tank 2 to be delivered is opened, and the liquid to be delivered is output at constant pressure according to the valve control flow.

Example 3

Referring to fig. 1, an exhaust valve 2-2 at the top of a delivered liquid storage tank 2 is opened to empty the delivered liquid storage tank 2; running water in a pipeline enters a conveyed liquid storage tank 2 through an opened valve (equivalent to a connection valve 3-1 of a high-level tank in the figure), and the valve (equivalent to the connection valve 3-1 of the high-level tank in the figure) is closed; the high-pressure gas tank 1 inputs high-pressure gas through a valve 1-1 at the lower part of the high-pressure gas tank, then enters the liquid storage tank 2 to be conveyed through a valve 1-2 connected with the liquid storage tank to be conveyed, constant pressure is controlled through a pressure stabilizing valve, a discharge valve 2-1 at the bottom of the liquid storage tank 2 to be conveyed is opened, and the liquid to be conveyed is output at constant pressure according to valve control flow.