Portable gas calibration verification box

Abstract

The utility model relates to a portable gas calibration verification box, a front cover is installed on a box body through a hinge, a buckle used for limiting the front cover is installed on the box body, and supporting legs are fixed on the bottom surface of the box body; a filter pressure reducing valve, a three-way switching valve, a flow meter and a charging air pump are fixed in the box body, and an air inlet connector and an air outlet connector are installed on the side face of the box body. The air inlet connector is connected with the air inlet end of the filter pressure reducing valve through a pipeline, the air outlet end of the filter pressure reducing valve is connected with the first air inlet end of the three-way switching valve through a pipeline, the air outlet end of the three-way switching valve is connected with the air inlet end of the flowmeter through a pipeline, and the air outlet end of the flowmeter is connected with the air outlet connector through a pipeline. The air outlet end of the charging air pump is connected with the second air inlet end of the three-way switching valve through a pipeline, the charging air pump is provided with a charging connector, and two shoulder strap mounting bases are fixed to the top face of the box body. The device has the advantages of being simple in structure, convenient to carry and convenient for users to calibrate and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas analyzers, and specifically discloses a portable gas calibration and verification box. Background Art

[0002] In the fields of modern industry and scientific research, accurate and rapid on-site calibration of gas analysis instruments is crucial. At present, although the calibration boxes on the market can meet general requirements, they have problems such as large volume, inconvenient portability, and cumbersome operation. Therefore, there is an urgent need for a more lightweight, portable, and user-friendly calibration box. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a portable gas calibration and verification box that is convenient to carry and user-friendly for calibration.

[0004] According to the technical solution provided by the utility model, the portable gas calibration and verification box includes a box body and a front cover. The front cover is installed on the box body through a hinge, and a buckle for limiting the front cover is installed on the box body. Legs are fixed on the bottom surface of the box body. A filter pressure reducing valve, a three-way switching valve, a flow meter, and a charging air pump are fixed in the box body. An air inlet interface and an air outlet interface are installed on the side surface of the box body. The air inlet interface is connected to the air inlet end of the filter pressure reducing valve through a pipeline. The air outlet end of the filter pressure reducing valve is connected to the first air inlet end of the three-way switching valve through a pipeline. The air outlet end of the three-way switching valve is connected to the air inlet end of the flow meter through a pipeline. The air outlet end of the flow meter is connected to the air outlet interface through a pipeline. The air outlet end of the charging air pump is connected to the second air inlet end of the three-way switching valve through a pipeline. The charging air pump has a charging connector, and two shoulder strap mounting seats are fixed on the top surface of the box body.

[0005] Preferably, a handle is fixed on the top surface of the box body, and the handle is located between the two shoulder strap mounting seats.

[0006] Preferably, the front cover is a transparent front cover.

[0007] Preferably, the charging connector is a USB charging connector.

[0008] The utility model has the advantages of simple structure, convenient to carry around, and user-friendly for calibration. Brief Description of the Drawings

[0009] Figure 1 is the front view of the utility model.

[0010] Figure 2 is the front view of the utility model after removing the shoulder strap mounting seats.

[0011] Figure 3It is the top view of the present utility model after removing the shoulder strap mounting base.

[0012] Figure 4 It is the left view of the present utility model after removing the shoulder strap mounting base.

[0013] Figure 5 It is the perspective view of the present utility model after removing the shoulder strap mounting base. Detailed implementation manners

[0014] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0015] A portable gas calibration and verification box, as Figures 1-5 shown, includes a box body 1 and a front cover 2. The front cover 2 is installed on the box body 1 through a hinge 3. A buckle 4 for limiting the front cover 2 is installed on the box body 1. Legs 5 are fixed on the bottom surface of the box body 1. A filter pressure reducing valve 6, a three-way switching valve 7, a flowmeter 8 and a charging air pump 9 are fixed inside the box body 1. An air inlet interface 10 and an air outlet interface 11 are installed on the side surface of the box body 1. The air inlet interface 10 is connected to the air inlet end of the filter pressure reducing valve 6 through a pipeline. The air outlet end of the filter pressure reducing valve 6 is connected to the first air inlet end of the three-way switching valve 7 through a pipeline. The air outlet end of the three-way switching valve 7 is connected to the air inlet end of the flowmeter 8 through a pipeline. The air outlet end of the flowmeter 8 is connected to the air outlet interface 11 through a pipeline. The air outlet end of the charging air pump 9 is connected to the second air inlet end of the three-way switching valve 7 through a pipeline. The charging air pump 9 has a charging connector 9.1. Two shoulder strap mounting bases 12 are fixed on the top surface of the box body 1.

[0016] A handle 13 is fixed on the top surface of the box body 1, and the handle 13 is located between the two shoulder strap mounting bases 12.

[0017] The front cover 2 is a transparent front cover.

[0018] The charging connector 9.1 is a USB charging connector.

[0019] The working principle of the present utility model is as follows:

[0020] When the gas from the standard gas cylinder enters the filter pressure reducing valve 6 through the air inlet interface 10, the filter pressure reducing valve 6 is responsible for filtering the gas and reducing the high pressure of the standard gas cylinder to a preset safe range, ensuring the stable operation of the system. The user can intuitively monitor the pressure of the decompressed gas through the instrument, increasing the transparency and sense of security of the operation.

[0021] The gas filtered and depressurized by the filter pressure reducing valve 6 enters the first air inlet end of the three-way switching valve 7 through a pipeline. The three-way switching valve 7 allows users to easily switch the gas path between the charging air pump 7 and the standard gas cylinder. Together with the flowmeter 8, the calibration box of the present utility model can stably control the flow rate within the required range, ensuring the continuity and accuracy of the calibration process.

[0022] In the present utility model, the charging connector 9.1 of the charging air pump 9 is a USB charging connector, which means that the operator no longer needs to carry a heavy range gas cylinder, achieving environmental protection and energy conservation while being portable. Such a design greatly expands the usage scenarios of the calibration box of the present utility model, ensuring efficient working performance both in indoor laboratories and outdoor sites.

[0023] The calibration box of the present utility model adopts a unitary assembly method, making the maintenance and replacement of components simple and fast. This modular concept not only facilitates daily maintenance work but also greatly extends the service life of the product. Two shoulder strap mounting seats 12 are fixed on the top surface of the box body 1, and shoulder straps are installed on the shoulder strap mounting seats 12. The design of the shoulder strap mounting seats 12 reflects humanized consideration. Staff can easily carry it slung across the body, freeing their hands and improving the flexibility of on-site work. A handle 13 is fixed on the top surface of the box body 1, and the handle 13 is located between the two shoulder strap mounting seats 12. Staff can easily lift and transfer the present utility model, improving the flexibility of on-site work.

[0024] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Although the present utility model has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A portable gas calibration and inspection box, comprising a box body (1) and a front cover (2), wherein the front cover (2) is mounted on the box body (1) via a hinge (3), a buckle (4) for limiting the front cover (2) is mounted on the box body (1), and a support foot (5) is fixed on the bottom surface of the box body (1); the characteristics are: A filter pressure reducing valve (6), a three-way switching valve (7), a flow meter (8) and a charging air pump (9) are fixed in the box (1), and an air inlet interface (10) and an air outlet interface (11) are installed on the side of the box (1); the air inlet interface (10) is connected to the air inlet end of the filter pressure reducing valve (6) through a pipeline, the air outlet end of the filter pressure reducing valve (6) is connected to the first air inlet end of the three-way switching valve (7) through a pipeline, the air outlet end of the three-way switching valve (7) is connected to the air inlet end of the flow meter (8) through a pipeline, the air outlet end of the flow meter (8) is connected to the air outlet interface (11) through a pipeline, the air outlet end of the charging air pump (9) is connected to the second air inlet end of the three-way switching valve (7) through a pipeline, the charging air pump (9) has a charging connector (9.1), and two shoulder strap mounting seats (12) are fixed on the top surface of the box (1).

2. The portable gas calibration and inspection box according to claim 1, characterized in that: A handle (13) is fixed on the top surface of the box body (1), and the handle (13) is located between the two shoulder strap mounting seats (12).

3. The portable gas calibration and verification box according to claim 1, characterized in that: The front cover (2) is a transparent front cover.

4. The portable gas calibration and verification box according to claim 1, characterized in that: The charging connector (9.1) is a USB charging connector.

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