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Plastic bag constant-volume air inflation method

A technique of plastic bag and gas filling, which is applied to the container filling method, the container discharge method, and the equipment loaded into the pressure vessel, etc. It can solve the problems that the gas cannot be permanently stored, and the volume of the gas is difficult to control, etc., and achieve structural Simple, safe and reliable work, high efficiency effect

Inactive Publication Date: 2020-08-25
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the plastic bag in the prior art is inflated, the gas in the gas storage bottle is filled into the plastic bag through the gas pipeline. During this process, not only the volume of the filled gas is difficult to control, but also the filled gas cannot be permanently stored.

Method used

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  • Plastic bag constant-volume air inflation method
  • Plastic bag constant-volume air inflation method
  • Plastic bag constant-volume air inflation method

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Embodiment Construction

[0019] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as Figure 1-Figure 2 As shown, a constant-volume inflation device for plastic bags includes a pressure-stabilizing inflation device and a suction-opening and heat-sealing device for plastic bag openings. The output end of the pressure-stabilizing inflation device is connected to the plastic bag mouth sucked open by the plastic bag mouth and opened by the heat-sealing device through the needle tube of the vacuum-pumping needle-tube expansion device; the PLC controller is respectively connected to the voltage-stabilizing inflation device through signal lines Inflation control valve, pressure reducing and stabilizing valve, pressure sensor, solenoid valve, flow switch, cylinder of vacuum inflating needle tube expansion device and cylinder of plastic bag opening and heat sealing device, vacuum generator, heat sealing device are connected.

[00...

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Abstract

The invention relates to the technical field of air pressure, in particular to a plastic bag constant-volume air inflation method. According to the plastic bag constant-volume air inflation method, gas outputs stable pressure through a pressure reducing and stabilizing valve, the stable pressure is transmitted to a pressure tank, and when a pressure sensor detects that the pressure in the pressuretank is about to reach the set pressure, the pressure reducing and stabilizing valve is controlled by a PLC to reduce the flow speed and reduce the air inflation amount; and on the contrary, the pressure reducing and stabilizing valve is controlled to increase the flow speed to increase the air inflation amount, so that the pressure in the pressure tank tends to be in a constant-pressure state, and a stable constant-pressure source is provided for equipment to be inflated. The PLC is connected with an air inflation control valve of a pressure stabilizing air inflation device, the pressure reducing and stabilizing valve, the pressure sensor, an electromagnetic valve, a flow switch, an air cylinder of a vacuumizing inflation needle tube telescopic device, an air cylinder of a plastic bag opening suction opening and heat sealing device, a vacuum generator and a heat sealing device through signal lines, so that full-automatic suction opening of a plastic bag opening, vacuumizing constant-volume air inflation and heat sealing are effectively integrated. According to the plastic bag constant-volume air inflation method, the structure is simple, and automatic and constant-volume fillingof gas can be achieved.

Description

technical field [0001] The invention relates to a constant-volume inflation method for a plastic bag. Background technique [0002] When the plastic bag in the prior art is inflated, the gas in the gas storage bottle is filled into the plastic bag through the gas pipeline. During this process, not only the volume of the filled gas is difficult to control, but also the filled gas cannot be permanently stored. Contents of the invention [0003] The purpose of the present invention is to provide a plastic bag constant volume inflation method, which can realize the continuous control of the pressure stability in the container and the automatic suction opening of the plastic bag mouth, vacuum pumping, constant volume filling and heat sealing. It is not only safe and reliable, but also efficient. [0004] The invention includes a pressure-stabilizing inflation device and a suction-opening and heat-sealing device for plastic bag openings. The output end of the pressure-stabiliz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C5/06F17C13/02F17D1/04F17D3/01
CPCF17C5/002F17C5/06F17C13/025F17C2223/0123F17D1/04F17D3/01
Inventor 王向红谭小辉杨胜
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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