Fluid pumping device with split flow structure

Abstract

The fluid pumping device with a decompression structure provided by the present invention enables the fluid pumping device to maintain communication between an air outlet end of the fluid pumping device and the atmosphere when the fluid pumping device is discharging the fluid in the container, so that the air outlet end is in the shape of Incomplete sealing, whereby the high-pressure gas entering the interior of the fluid pumping device forms a pressurized flow and a discharge flow, and the discharge flow is guided to the atmosphere through the gas outlet port.

Description

technical field [0001] The present invention is related to pneumatic tool technology, in particular to a fluid pumping device with split flow structure. Background technique [0002] According to the fluid pumping device developed on the basis of the Venturi tube principle, many different specific technical contents have been disclosed in the known technology. The fluid pumping device specifically provides a control gas flow path in the venturi tube, thereby providing the use function of suction and discharge, and greatly improving the convenience of operation. [0003] Furthermore, the prior patent No. 098222559 in Taiwan, China focuses on the perspective of industrial safety, and further improves the aforementioned known fluid pumping device to change the external high-pressure gas in response to the use status of the known fluid pumping device. The flow rate of the inflow, when using the known fluid pumping device to suck the external fluid into the container, the inflow...

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Problems solved by technology

[0004] The improved front-opening technology can control the inflow of high-pressure gas through the inflow end, but in general use, there is usually no additional air pressure adjustment mechanism between the upper-opening fluid pumping device and the high-pressure gas source. Therefore, the high-pressure gas The flow rate entering the container is limited, and the pressure of the gas entering the container is still very high, and the expansion of the container cannot be completely avoided. Even though it has been equipped with a safety valve for pressure relief, the activation of the safety valve requires a Above the set minimum starting pressure, before reaching the starting pressure, the safety valve will not actuate, and the expansion of the container cannot be avoided. In addition, such containers are generally made of polymer materials. After use, the repeated expansion that still exists in the previous improvement technology means that the container itself is still repeatedly subjected to external forces, which is easy to reduce the strength of the container itself, and it is easy to cause cracks, and there is still a need for improvement. And when the pressure value inside the container is near the minimum starting pressure value, because the pressure in the container is not constant, it will also cause the safety valve to start and close repeatedly, which will affect the use.

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