High-lift pneumatic water pump

Abstract

A high-lift air pressure water pump is characterized in that two parallel working cavities are arranged in a pump body, the tops of the two working cavities are respectively provided with an air inlet and exhaust port, the air inlet and exhaust ports are connected with a reversing valve through pipelines, the upper parts of the two working cavities are respectively provided with a water inlet, the water inlet is provided with a water inlet one-way valve through which water can only enter, and the two water inlets are communicated through a pipeline and then are connected with a water inlet pipe; water outlets are formed in the lower portions of the two working cavities, water outlet one-way valves which can only discharge water are arranged at the water outlets, the two water outlets are communicated through a pipeline and then connected with a water outlet pipe, a high-pressure air inlet pipe is connected to a reversing valve, and high-level liquid level meters are arranged at the positions, higher than the water inlets, of the upper portions of the two working cavities. And low-level liquid level meters are arranged at the positions, higher than the water outlets, of the lower parts of the two working cavities. The high-pressure water pump has the main characteristics that the water pump body is not provided with a moving part, the structure is simplified, the leakage problem of a conventional high-pressure water pump is avoided, the failure rate is low, and the lift is almost not limited. The device is reasonable in design, simple in structure and convenient to automatically control.

Description

Technical Field

[0001] The utility model relates to a machine which uses high-pressure air as power to convey fluid, in particular to a high-lift air pressure water pump. Background Art

[0002] A water pump is a commonly used device, usually driven by an electric motor, an internal combustion engine or a water turbine. The higher the head of the water pump, the greater the required working pressure and the more difficult it is to manufacture. High-lift water pumps have high manufacturing precision, high prices, and are difficult to use and maintain, so high-lift water pumps have always been a technical difficulty. The "air pressure water pump" patent No. 98220645.3 disclosed in Chinese patent documents proposes a method of using a cylinder to drive a piston water pump to pump water, which is essentially no different from the known volumetric water pump. The air pressure water pump proposed in the patent application No. 01114719.9 of the "air pressure water pump" disclosed in Chinese patent documents requires an air compressor to evacuate the air before it can absorb water, which is equivalent to requiring the functions of an air compressor and a vacuum pump to be used at the same time, which is very inconvenient in actual application.

[0003] The natural energy water-lifting projects currently available, which are designed to supply water to mountainous areas, require water lifts of hundreds or even thousands of meters, and it is difficult to find suitable water pumps with high efficiency, low cost and reliable operation. Summary of the invention

[0004] The purpose of the utility model is to propose a new technical solution for a high-lift air pressure water pump which is particularly suitable for use with a natural energy liquid and air pressure water pumping device and has a simple structure, reliable operation, low water pumping cost, and is easy to automatically control.

[0005] The technical scheme of the utility model is as follows: a high-lift air-pressure water pump, a water inlet, a water outlet and an air inlet and outlet are provided on a pump body, two parallel working chambers are provided in the pump body, air inlet and outlet are provided at the tops of the two working chambers, the air inlet and outlet are connected to the reversing valve through pipelines, water inlets are provided at the upper parts of the two working chambers, an inlet check valve that can only allow water to enter is provided at the water inlet, the two water inlets are connected by pipelines and then connected to the water inlet pipe, water outlets are provided at the lower parts of the two working chambers, an outlet check valve that can only allow water to exit is provided at the water outlet, the two water outlets are connected by pipelines and then connected to the water outlet pipe, a high-pressure air inlet pipe is connected to the reversing valve, high-level liquid gauges are provided at the upper parts of the two working chambers at a position higher than the water inlets, and low-level liquid gauges are provided at the lower parts of the two working chambers at a position higher than the water outlets.

[0006] A working chamber is provided in the pump body, and an inlet and exhaust port is provided at the top of the working chamber, and the inlet and exhaust port is connected to the reversing valve through a pipeline. A water inlet is provided at the upper part of the working chamber, and a water inlet check valve that can only allow water to enter is provided at the water inlet, and the water inlet is connected to the water inlet pipe. A water outlet is provided at the lower part of the working chamber, and a water outlet check valve that can only allow water to exit is provided at the water outlet, and the water outlet is connected to the water outlet pipe. The high-pressure air inlet pipe is connected to the reversing valve, a high-level liquid level gauge is provided at the upper part of the working chamber above the water inlet, and a low-level liquid level gauge is provided at the lower part of the working chamber above the water outlet.

[0007] When the high-lift air pressure water pump has two working chambers, the reversing valve adopts a two-position five-way valve, and when the high-lift air pressure water pump has one working chamber, the reversing valve adopts a two-position three-way valve. The reversing valve is an electromagnetic reversing valve or a pneumatic reversing valve.

[0008] The reversing valve, high-level liquid gauge and low-level liquid gauge are connected to the automatic control device.

[0009] The working principle of the utility model is as follows: the pump body of the utility model is provided with two working chambers, and the two working chambers are provided with high and low liquid level gauges, which correspond to the high and low water levels respectively. When the water level in the working chamber of the pump body reaches the predetermined high water level, the high-level liquid level gauge sends a signal, and the reversing valve connects the inlet and outlet ports to the high-pressure air. At this time, the inside of the working chamber of the pump body is in a high-pressure state. Under the action of the upper high-pressure air pressure, the water outlet check valve opens, the water inlet check valve closes, and the water in the working chamber of the pump body flows out from the outlet through the outlet pipe. At this time, it is a water lifting condition. When the water level in the working chamber of the pump body drops to the set low water level, the low-level liquid level gauge sends a signal, and the automatic control system sends an instruction to control the reversing valve to reversing, so that the inlet and outlet ports are connected to the atmosphere. At this time, the inside of the working chamber of the pump body is in a low-pressure state. In the low-pressure state, the water outlet check valve is closed, the water inlet check valve is opened, and the water from the water supply source enters the working chamber of the pump body. At this time, it is a water replenishment condition. When the water level rises to the set high water level, the high-level liquid level gauge sends a signal, and the automatic control system instructs the reversing valve to reverse, connecting the inlet and outlet to the high-pressure air again, and restarting the water lifting condition. In this way, automatic water lifting and water supply can be achieved by repeating the cycle. When the two working chambers of the utility model are working, when one of the working chambers is in the water lifting condition, the other working chamber must be in the water replenishing condition. The two working chambers circulate alternately to achieve uninterrupted water supply. The main feature of the utility model is that the water pump body has no moving parts, which simplifies the structure and does not have the leakage problem of conventional high-pressure water pumps. The failure rate is low and the lift is almost unlimited. The utility model has a reasonable design, a simple structure, and is easy to control automatically. It is a high-lift air pressure water pump suitable for a natural energy liquid-gas pressure water lifting device that supplies water to mountainous areas with high altitudes and high drop heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the utility model structure with double working chambers

[0011] Figure 2 Schematic diagram of the utility model structure of a single working chamber

[0012] In the figure:

[0013] 1 is the pump body, 2 is the inlet and outlet, 3 is the high-level liquid gauge, 4 is the water inlet, 5 is the water inlet check valve, 6 is the low-level liquid gauge, 7 is the water outlet, 8 is the water outlet check valve, 9 is the water outlet pipe, 10 is the water inlet pipe, 11 is the high-pressure air inlet pipe, and 12 is the reversing valve.

[0014] Specific implementation method 1 Double working chamber high lift air pressure water pump

[0015] A high-lift air pressure water pump, wherein a pump body (1) is provided with two parallel working chambers, the devices on the two working chambers are identical and symmetrical, inlet and outlet ports (2) are provided at the tops of the two working chambers, the inlet and outlet ports are connected to a reversing valve (12) via a pipeline, a water inlet (4) is provided at the top of the two working chambers, a water inlet check valve (5) that can only allow water to enter is provided at the water inlet, the two water inlets are connected by a pipeline and then connected to a water inlet pipe (10), a water outlet (7) is provided at the bottom of the two working chambers, a water outlet check valve (8) that can only allow water to exit is provided at the water outlet, the two water outlets are connected by a pipeline and then connected to a water outlet pipe (9), a high-pressure air inlet pipe (11) is connected to the reversing valve (12), a high-level liquid gauge (3) is provided at a position above the water inlet at the top of the two working chambers, and a low-level liquid gauge (6) is provided at a position above the water outlet at the bottom of the two working chambers. The reversing valve (12), the high level gauge (3) and the low level gauge (6) are connected to the automatic control device. The reversing valve is an electromagnetic reversing valve or a pneumatic reversing valve. The embodiment adopts a two-position five-way reversing valve.

[0016] The working principle of this embodiment is as follows: a high level gauge and a low level gauge are provided in the working chamber of the pump body, corresponding to the high and low water levels respectively. When the water level in the working chamber of the pump body reaches the set high water level, the high level gauge sends a signal, and the reversing valve connects the inlet and outlet ports to the high-pressure air. At this time, the inside of the working chamber of the pump body is in a high-pressure state. Under the action of the upper high-pressure air pressure, the water outlet check valve opens, the water inlet check valve closes, and the water in the working chamber of the pump body flows out from the outlet through the outlet pipe. At this time, it is a water lifting condition. When the water level in the working chamber of the pump body drops to the set low water level, the low level gauge sends a signal, and the automatic control system instructs the reversing valve to reverse, so that the inlet and outlet ports are connected to the atmosphere. At this time, the working chamber of the pump body is in a low-pressure state. Under the low-pressure state, the water outlet check valve is closed, the water inlet check valve is opened, and the water from the water source enters the pump body. At this time, it is a water replenishment condition. When the water level rises to the set high water level, the high level gauge sends a signal, and the automatic control system instructs the reversing valve to reverse, connect the inlet and outlet to the high-pressure air again, and restart the water pumping condition. This cycle can achieve automatic water replenishment and water pumping. Since there are two independent working chambers, when one working chamber is in the water pumping condition, the other working chamber is in the water replenishment condition, and the two working chamber conditions cycle alternately. At any time, there is always a working chamber in the water pumping condition, so the dual working chamber implementation method can achieve uninterrupted water supply.

[0017] Specific implementation method 2 Single working chamber high lift air pressure water pump

[0018] A single working chamber high-lift air pressure water pump, wherein a working chamber is provided in a pump body (1), an inlet and outlet (2) is provided at the top of the working chamber, the inlet and outlet are connected to a reversing valve (12) via a pipeline, a water inlet (4) is provided at the upper part of the working chamber, a water inlet check valve (5) that can only allow water to enter is provided at the water inlet, the water inlet is connected to a water inlet pipe (10), a water outlet (7) is provided at the lower part of the working chamber, a water outlet check valve (8) that can only allow water to exit is provided at the water outlet, the water outlet is connected to a water outlet pipe (9), a high-pressure air inlet pipe (11) is connected to the reversing valve (12), a high-level liquid gauge (3) is provided at a position higher than the water inlet at the upper part of the working chamber, and a low-level liquid gauge (6) is provided at a position higher than the water outlet at the lower part of the working chamber. The reversing valve (12), the high-level liquid gauge (3) and the low-level liquid gauge (6) are connected to an automatic control device. The reversing valve described is an electromagnetic reversing valve or a pneumatic reversing valve. This embodiment adopts a two-position three-way reversing valve.

[0019] The single working chamber implementation method is intermittent water supply. When the water consumption is small, a high-lift air pressure water pump with a single working chamber can reduce costs and reduce investment.

[0020] The reversing valve in the above two embodiments can be selected between an electromagnetic reversing valve and a pneumatic reversing valve, which will not affect the performance of the water pump itself.

Claims

1. A high-lift air pressure water pump, the pump body is provided with a water inlet, a water outlet and an air inlet and outlet, characterized in that: The pump body (1) is provided with two parallel working chambers, and the tops of the two working chambers are provided with air inlet and air outlets (2), which are connected to the reversing valve (12) via pipelines. The upper parts of the two working chambers are provided with water inlets (4), and the water inlet check valves (5) that can only allow water to enter are provided at the water inlets. The two water inlets are connected by pipelines and then connected to the water inlet pipe (10). The lower parts of the two working chambers are provided with water outlets (7), and the water outlet check valves (8) that can only allow water to exit are provided at the water outlets. The two water outlets are connected by pipelines and then connected to the water outlet pipe (9). The high-pressure air inlet pipe (11) is connected to the reversing valve (12). A high-level liquid gauge (3) is provided at a position above the water inlet at the upper parts of the two working chambers, and a low-level liquid gauge (6) is provided at a position above the water outlet at the lower parts of the two working chambers.

2. A high-lift air pressure water pump as claimed in claim 1, characterized in that: The pump body (1) is provided with a working chamber, an air inlet and an air outlet (2) is provided at the top of the working chamber, the air inlet and the air outlet are connected to the reversing valve (12) via a pipeline, a water inlet (4) is provided at the upper part of the working chamber, a water inlet check valve (5) that can only allow water to enter is provided at the water inlet, the water inlet is connected to the water inlet pipe (10), a water outlet (7) is provided at the lower part of the working chamber, a water outlet check valve (8) that can only allow water to exit is provided at the water outlet, the water outlet is connected to the water outlet pipe (9), a high-pressure air inlet pipe (11) is connected to the reversing valve (12), a high-level liquid gauge (3) is provided at a position above the water inlet at the upper part of the working chamber, and a low-level liquid gauge (6) is provided at a position above the water outlet at the lower part of the working chamber.

3. A high-lift air pressure water pump as claimed in claim 1 or 2, characterized in that: When the high-lift air-pressure water pump has two working chambers, the reversing valve (12) adopts a two-position five-way valve, and when the high-lift air-pressure water pump has one working chamber, the reversing valve (12) adopts a two-position three-way valve.

4. A high-lift air pressure water pump as claimed in claim 1 or 2, characterized in that: The reversing valve (12), the high-level liquid level gauge (3) and the low-level liquid level gauge (6) are connected to an automatic control device.

5. A high-lift air pressure water pump as claimed in claim 1 or 2, characterized in that: The reversing valve (12) is an electromagnetic reversing valve or a pneumatic reversing valve.

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