Automatic gas charging and exhausting device based on miniature glove box

Abstract

The invention provides an automatic gas charging and exhausting device based on a miniature glove box, which comprises the miniature glove box, and a gas inlet, a gas outlet, a touch screen unit, a glove connecting part and a cabin door which are arranged on the miniature glove box, a pressure gauge used for monitoring the pressure in the miniature glove box is also arranged in the miniature glove box, and the glove connecting part is used for connecting external gloves; the air outlet is connected to the vacuum pump, the touch screen unit comprises a touch screen and a control circuit and is used for setting and displaying operation parameters, and the control circuit is in signal connection to the pressure gauge. According to the automatic gas charging and exhausting device based on the miniature glove box, the inert gas environment in the miniature glove box can be controlled and maintained, and the water-free, oxygen-free and dust-free ultra-pure environment in the experiment process is ensured.

Description

Technical Field

[0001] The invention belongs to the field of vacuum glove box purification treatment, and in particular relates to a device for automatically filling and pumping gas based on a micro glove box. Background Art

[0002] The development background of the technology field of automatic filling and exhaust devices for micro glove boxes is closely related to the demand for ultra-pure environments in laboratories and industrial environments. With the continuous progress in the fields of new materials, new energy and biomedicine, many chemical reactions have become very strict with the requirements for moisture and oxygen content during the experiment, and the content of water and oxygen will greatly affect the experimental results. Therefore, anhydrous and oxygen-free glove boxes are increasingly widely used in scientific research laboratories. They are used in organic synthesis, lithium battery manufacturing research, OLED packaging, storage and packaging of reagents sensitive to water and oxygen, and biological fields such as anaerobic bacteria culture and cell hypoxia culture. In response to the need to replenish various gases (inert gases, gases required for chemical reactions, etc.) in small closed containers, large glove boxes are very wasteful of gas and have poor economic benefits due to their large capacity (4-10m^3); micro glove boxes do not have automatic control modules and require manual operation of gas replenishment and vacuuming, which is very troublesome and time-consuming. Summary of the invention

[0003] In view of this, the present invention aims to propose a device for automatically filling and pumping gas based on a micro glove box, so as to solve the problem that the micro glove box needs manual operation of gas replenishment and vacuum pumping, resulting in low working efficiency.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A device for automatically filling and pumping gas based on a micro glove box, comprising a micro glove box and an air inlet, an air outlet, a touch screen unit, a glove connecting part, and a hatch provided therein. A pressure gauge for monitoring the pressure inside the micro glove box is also installed inside the micro glove box, and the glove connecting part is used to connect external gloves; the air outlet is connected to a vacuum pump, and the touch screen unit comprises a touch screen and a control circuit for setting and displaying operating parameters, and the control circuit signal is connected to the pressure gauge.

[0006] Furthermore, a door handle is provided on one side of the door.

[0007] Furthermore, filter elements are provided at the air inlet and the air outlet.

[0008] Furthermore, the micro glove box is a closed space.

[0009] Furthermore, the gas inlet is used to connect to a gas source to enable gas filling.

[0010] Furthermore, the touch screen unit has two modes: manual control and automatic control.

[0011] Furthermore, a pressure sensor is provided inside the micro glove box, and the pressure sensor signal is connected to the control circuit of the touch screen unit. The pressure sensor is used to monitor the pressure inside the micro glove box in real time.

[0012] Furthermore, there are two pressure sensors, which are installed near the air inlet and the air outlet respectively.

[0013] Furthermore, an air inlet valve is installed at the air inlet, and an air outlet valve is installed at the air outlet, and the air inlet valve and the air outlet valve are respectively connected to the control circuit.

[0014] Furthermore, a gas sensor is installed inside the micro glove box to monitor the change of gas concentration in real time, and the gas sensor is connected to the control circuit.

[0015] Compared with the prior art, the device for automatically filling and pumping gas based on a micro glove box according to the present invention has the following advantages:

[0016] (1) The device for automatically filling and pumping gas based on a micro glove box described in the present invention can provide a small-capacity gas automatic filling and pumping method, taking into account both economic benefits and convenience.

[0017] (2) The device for automatically filling and pumping gas in a micro glove box described in the present invention can control and maintain the inert gas environment inside the micro glove box, ensuring an ultra-pure environment that is free of water, oxygen and dust during the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of a device for automatically filling and pumping gas in a micro glove box according to an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a touch screen according to an embodiment of the present invention;

[0021] Figure 3 This is a principle block diagram of the manual mode described in an embodiment of the present invention;

[0022] Figure 4 This is a principle block diagram of the automatic mode described in an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 1-air inlet; 2-air outlet; 3-touch screen unit; 4-glove connection part; 5-hatch door; 6-hatch door handle. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] Device based on automatic gas filling and extraction of micro glove box, such as Figures 1 to 4 As shown, the micro glove box includes an air inlet 1, an air outlet 2, a touch screen unit 3, a glove connection part 4, and a hatch 5 arranged therein. A pressure gauge for monitoring the pressure inside the micro glove box is also installed inside the micro glove box. The glove connection part 4 is used to connect external gloves; the touch screen unit 3 includes a touch screen and a control circuit for setting and displaying operating parameters, and the control circuit signal is connected to the pressure gauge.

[0030] The basic dimensions of the micro glove box are 700mm long, 450mm wide and 550mm high.

[0031] Filter elements are provided at the air inlet 1 and the air outlet 2 for filtering the gas.

[0032] A door handle 6 is also provided on one side of the door 5 .

[0033] Outlet 2 is a vacuum outlet for connecting a vacuum pump ( Figure 1 (B).

[0034] The micro glove box is a confined space.

[0035] Gas inlet 1 is used to connect the gas source ( Figure 1 A), to achieve gas filling.

[0036] The touch screen unit 3 has two modes: manual control and automatic control.

[0037] In manual control mode, the user can manually set the inflation and vacuuming operations through the touch screen interface. The user can select the desired gas type and start or stop the inflation and vacuuming process through the buttons on the interface. In automatic control mode, the user can pre-set the inflation time, vacuuming time, and the number of inflation and vacuuming. The touch screen control module will automatically perform these operations according to the preset parameters. The specific steps are as follows:

[0038] 1. **Initialization settings**: The user enters the required parameters through the touch screen interface, including inflation time, vacuum time and number of cycles.

[0039] 2. **Start automatic mode**: The user selects the automatic control mode and starts the system.

[0040] 3.**Inflation process**: The system fills the micro glove box with specified gas according to the set inflation time.

[0041] 4. **Vacuuming process**: After the inflation process is completed, the system vacuums the micro glove box according to the set vacuuming time.

[0042] 5. **Cyclic operation**: The system repeats the inflation and vacuuming process according to the set number of cycles until the preset number of cycles is reached.

[0043] 6. **End operation**: When the number of cycles is completed, the system automatically stops the operation and displays the operation completion information on the touch screen interface.

[0044] Through the above design, the present invention can effectively meet the needs of inflation and vacuuming in a small closed container, reduce gas waste, improve economic benefits, and is easy to operate and saves time.

[0045] A pressure sensor is also provided inside the micro glove box, and the pressure sensor signal is connected to the control circuit of the touch screen unit 3. The pressure sensor is used to monitor the pressure inside the micro glove box in real time. When the pressure exceeds the preset safety threshold, the system will automatically stop the inflation operation and issue an alarm to remind the user.

[0046] Preferably, there are two pressure sensors, which are respectively installed near the air inlet 1 and the air outlet 2. By installing the pressure sensors, overpressure protection is achieved, and the overpressure protection function is used to prevent the internal pressure of the system from exceeding the set safety threshold, thereby avoiding equipment damage or operational danger.

[0047] Preferably, an air inlet valve is installed at the air inlet 1, and an air outlet valve is installed at the air outlet 3, and the air inlet valve and the air outlet valve are respectively connected to the control circuit.

[0048] After the system is started, the pressure sensor starts to monitor the internal pressure of the micro glove box in real time. When the pressure exceeds the set threshold, the control circuit controls the air inlet valve to close, thereby stopping the gas input and triggering the alarm system of the control circuit; the user can view the alarm information through the touch screen and take corresponding measures.

[0049] There is also an emergency stop button on the touch screen, which is used to immediately stop all operations in an emergency to ensure the safety of operators and equipment. When the emergency stop button is activated, the control circuit immediately stops all inflation and vacuum operations.

[0050] In one or more embodiments, a gas sensor is also installed inside the micro glove box to monitor the change in gas concentration in real time, and the gas sensor is connected to the control circuit.

[0051] The gas sensor is used to detect whether there is gas leakage inside the micro glove box to ensure the airtightness and safety of the operating environment. When an abnormal gas concentration change is detected, the control circuit will issue an alarm to alert the user. The user can check the airtightness of the micro glove box based on the alarm information and take appropriate repair measures.

[0052] The realization of these functions can effectively improve the safety and reliability of the micro glove box system and ensure safety and stability during operation.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for automatically filling and pumping gas in a micro glove box, characterized in that: The invention comprises a mini glove box and its air inlet, air outlet, touch screen unit, glove connection part and hatch. A pressure gauge for monitoring the pressure inside the mini glove box is also installed inside the mini glove box. The glove connection part is used to connect external gloves. The air outlet is connected to a vacuum pump. The touch screen unit comprises a touch screen and a control circuit for setting and displaying operating parameters. The control circuit signal is connected to the pressure gauge.

2. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: There is also a door handle on one side of the door.

3. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: Filter elements are provided at the air inlet and the air outlet.

4. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: The micro glove box is a confined space.

5. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: The gas inlet is used to connect to a gas source to achieve gas filling.

6. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: The touch screen unit has two modes: manual control and automatic control.

7. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: A pressure sensor is also provided inside the micro glove box. The pressure sensor signal is connected to the control circuit of the touch screen unit. The pressure sensor is used to monitor the pressure inside the micro glove box in real time.

8. The device for automatically filling and pumping gas based on a micro glove box according to claim 7, characterized in that: There are two pressure sensors, installed near the air inlet and outlet respectively.

9. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: An air inlet valve is installed at the air inlet, and an air outlet valve is installed at the air outlet. The air inlet valve and the air outlet valve are respectively connected to the control circuit.

10. The device for automatically filling and pumping gas based on a micro glove box according to claim 1, characterized in that: A gas sensor is also installed inside the micro glove box to monitor changes in gas concentration in real time. The gas sensor is connected to the control circuit.

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