A recyclable gas purification device

Abstract

The utility model relates to gas purification technical field especially relates to a recyclable gas purification device. The device includes support seat and protection casing, and the one end of protection casing and support seat is provided with opening, and the inside of protection casing is provided with air inlet pipe, air outlet pipe and gas baffle, and the air inlet pipe is connected with the carrier gas source outside through the first pipeline of setting in the inside of support seat, and the air outlet pipe is connected with the downstream use end outside through the second pipeline of setting in the inside of support seat, and the air inlet pipe and air outlet pipe are vertically arranged in the gas baffle, and the gas baffle can move up and down along the air inlet pipe and air outlet pipe, and the top of gas baffle is provided with molecular sieve, and the molecular sieve is used for adsorbing the impurity in carrier gas, and the carrier gas of entering the air inlet pipe flows out from the air outlet pipe after molecular sieve, and the molecular sieve after use is replaced through opening. Thus, the utility model can improve the service life of gas purification device under the premise of reducing the consumption cost of gas purification device.

Description

Technical Field

[0001] This utility model relates to the field of gas purification technology, and in particular to a recyclable gas purification device. Background Technology

[0002] Laboratories contain a variety of experimental equipment. In the gas analysis industry, typical instruments include gas chromatographs and gas chromatography-mass spectrometry (GC-MS). Many of these instruments rely heavily on carrier gases for operation, and high-purity carrier gases play a crucial role in the analytical process. Taking nitrogen carrier gas as an example, commercially available nitrogen is typically categorized into pure nitrogen, high-purity nitrogen, and ultra-pure nitrogen. As purity increases, the purchase price also rises. The operating environment of experimental equipment requires a continuous supply of carrier gas; higher purity carrier gas results in better sensitivity and detection performance. However, carrier gases may contain impurities such as water and dust, which can affect the normal operation and lifespan of the experimental equipment.

[0003] In related technologies, experimental equipment typically requires the addition of purification devices to its gas supply lines to remove impurities from the gas. However, large-scale purification equipment is relatively expensive, and small purification tubes are consumables that need to be replaced frequently.

[0004] Therefore, there is an urgent need to provide a recyclable gas purification device to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a recyclable gas purification tube, which can increase the service life of the gas purification device while reducing its consumption cost.

[0006] This utility model provides a recyclable gas purification device, including a support base and a protective shell detachably connected to the support base. One end of the protective shell connected to the support base has an opening. The protective shell contains an inlet pipe, an outlet pipe, and a permeable baffle. The inlet pipe is connected to an external carrier gas source via a first pipe located inside the support base. The outlet pipe is connected to a downstream user end outside the support base via a second pipe located inside the support base. The inlet pipe and the outlet pipe are vertically inserted into the permeable baffle, which is movable up and down along the inlet and outlet pipes. A molecular sieve is positioned above the permeable baffle to adsorb impurities in the carrier gas. The carrier gas entering the inlet pipe passes through the molecular sieve and flows out through the outlet pipe. The molecular sieve is replaced through the opening after use.

[0007] In one possible design, the height of the air intake outlet is higher than the height of the air outlet inlet.

[0008] In one possible design, the vent baffle is located below the air outlet inlet.

[0009] In one possible design, the breathable baffle is a porous metal mesh or a glass fiber filter membrane.

[0010] In one possible design, the protective housing is made of glass.

[0011] In one possible design, the support base is made of metal.

[0012] In one possible design, the support base and the protective housing are connected by a snap-fit ​​connection.

[0013] In one possible design, both the outlet of the air inlet pipe and the inlet of the air outlet pipe are equipped with filters, the pore size of which is smaller than the diameter of the molecular sieve.

[0014] This utility model provides a recyclable gas purification device, which includes a support base and a protective shell detachably connected to the support base. An inlet pipe and an outlet pipe are parallel and perpendicularly inserted into preset holes in a permeable baffle. The permeable baffle can move up and down along the axis of the inlet and outlet pipes. The inlet pipe is connected to an external carrier gas source through a first pipe preset inside the support base, while the outlet pipe is connected to the inlet of downstream experimental equipment through a second pipe inside the support base. When the carrier gas enters the protective shell from the inlet pipe, it comes into full contact with the molecular sieve (moisture, trace hydrocarbons, and other impurities in the carrier gas are efficiently adsorbed by the molecular sieve). The purified high-purity carrier gas is then transported to downstream equipment through the outlet pipe. When the molecular sieve adsorption capacity reaches saturation, the support base and protective shell can be separated, the protective shell removed, and the exhausted molecular sieve can be poured out through the open end. After refilling with a new molecular sieve, the device can be reused. Compared to traditional disposable purification tubes, this design eliminates the need to replace the entire purification device, requiring only periodic replenishment of consumables, thus reducing the cost per purification cycle and extending the overall service life of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a recyclable gas purification device provided in one embodiment of the present invention.

[0017] Figure label: 1-Support base; 2-Protective casing; 3-Intake pipe; 4-Exhaust pipe; 5- Breathable baffle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] like Figure 1 As shown, this utility model embodiment provides a recyclable gas purification device. The device includes a support base 1 and a protective shell 2 detachably connected to the support base 1. The protective shell 2 has an opening at one end connected to the support base 1. Inside the protective shell 2, there is an inlet pipe 3, an outlet pipe 4, and a breathable baffle 5. The inlet pipe 3 is connected to an external carrier gas source through a first pipe (not shown in the figure) located inside the support base 1. The outlet pipe 4 is connected to a downstream user end located outside the support base 1 through a second pipe (not shown in the figure) located inside the support base 1. The inlet pipe 3 and the outlet pipe 4 are vertically inserted through the breathable baffle 5. The breathable baffle 5 can move up and down along the inlet pipe 3 and the outlet pipe 4. A molecular sieve (not shown in the figure) is provided above the breathable baffle 5. The molecular sieve is used to adsorb impurities in the carrier gas. The carrier gas entering the inlet pipe 3 passes through the molecular sieve and flows out from the outlet pipe 4. The molecular sieve is replaced through the opening after use.

[0020] In this embodiment, the device includes a support base 1 and a protective shell 2 detachably connected to the support base 1. An inlet pipe 3 and an outlet pipe 4 are parallel and perpendicularly inserted into preset holes in a permeable baffle 5. The permeable baffle 5 can move up and down along the axial direction of the inlet pipe 3 and the outlet pipe 4. The inlet pipe 3 is connected to an external carrier gas source through a first pipe preset inside the support base 1, and the outlet pipe 4 is connected to the inlet of downstream experimental equipment through a second pipe inside the support base 1. When the carrier gas enters the protective shell 2 from the inlet pipe 3, it comes into full contact with the molecular sieve (the carrier gas contains...). Moisture, trace hydrocarbons and other impurities are efficiently adsorbed by the molecular sieve. The purified high-purity carrier gas is then transported to downstream equipment through the outlet pipe 4. When the molecular sieve adsorption capacity reaches saturation, simply separate the support base 1 from the protective shell 2, remove the protective shell 2, and pour out the failed molecular sieve through the open end. After refilling with a new molecular sieve, the device can be put into use again. Compared with traditional disposable purification tubes, this design does not require the entire purification device to be replaced. Only consumables need to be replenished periodically, which reduces the consumption cost of a single purification and extends the overall service life of the device.

[0021] In one embodiment of this utility model, an elastic protrusion (not shown in the figure) is provided on the edge of the breathable baffle 5, and a groove limiting position (not shown in the figure) is provided on the inner wall of the protective shell 2. The position of the breathable baffle 5 is changed by the cooperation of the elastic protrusion and the groove limiting position.

[0022] In this embodiment, an elastic protrusion is provided on the edge of the ventilated baffle 5, and correspondingly, grooves are provided at intervals along the axial direction on the inner wall of the protective shell 2 for limiting movement. By cooperating with the elastic protrusions and the grooves at different heights for limiting movement, the position of the ventilated baffle 5 within the protective shell can be easily adjusted.

[0023] In other embodiments, the elastic protrusions and grooves may not be provided. For example, the friction generated by the contact between the venting baffle 5 and the outer walls of the inlet pipe 3 and outlet pipe 4 can be used to form a stable supporting force, thereby balancing the weight of the molecular sieve above. Specifically, the diameter of the through holes on the venting baffle 5 for the inlet pipe 3 and outlet pipe 4 is slightly smaller than the outer diameter of the inlet pipe 3 and outlet pipe 4. The static friction generated by this structure can counteract the downward pressure of the molecular sieve, allowing the venting baffle 5 to stably bear the weight of the medium without sagging.

[0024] In one embodiment of this utility model, the height of the outlet of the air inlet pipe 3 is higher than the height of the inlet of the air outlet pipe 4.

[0025] In this embodiment, the height of the outlet of the inlet pipe 3 is designed to be higher than the height of the inlet of the outlet pipe 4, creating a height difference. This design guides the carrier gas into the protective shell 2, allowing it to flow upwards and fully contact the molecular sieve. This prevents the carrier gas from flowing directly out of the lower outlet pipe 4, ensuring that each portion of the carrier gas is adsorbed and purified by the molecular sieve, improving the efficiency of impurity removal, and reducing the generation of purification dead zones.

[0026] In one embodiment of this utility model, the breathable baffle 5 is located below the inlet of the air outlet pipe 4, so that the molecular sieve filled above the breathable baffle 5 can always completely cover the inlet area of ​​the air outlet pipe 4, thereby improving the adsorption effect of the molecular sieve.

[0027] In one embodiment of this utility model, both the outlet of the air inlet pipe 3 and the inlet of the air outlet pipe 4 are provided with a filter screen (not shown in the figure). The pore size of the filter screen is smaller than the diameter of the molecular sieve, so as to prevent the molecular sieve from entering the air inlet pipe 3 and the air outlet pipe 4.

[0028] In one embodiment of this utility model, the air-permeable baffle 5 is a porous metal mesh or a glass fiber filter membrane.

[0029] In this embodiment, the breathable baffle 5 is made of either porous metal mesh or glass fiber filter membrane. The porous metal mesh is preferably made of 316L stainless steel, which has both supporting strength and breathability. The glass fiber filter membrane adopts a high density specification, which can further intercept tiny impurities. When the breathable baffle 5 is a glass fiber filter membrane, a fixing member can be set on its outer ring, and an elastic protrusion is set on the fixing member.

[0030] In one embodiment of this utility model, the protective shell 2 is made of glass.

[0031] In this embodiment, the protective shell 2 is made of highly transparent glass, which not only has good pressure resistance but also allows operators to visually observe the state of the internal molecular sieve. For example, when the molecular sieve gradually changes from its initial white or light color to yellowish-brown and shows signs of clumping, it can be quickly determined that it is saturated with adsorption and replaced in time without additional disassembly and testing.

[0032] In one embodiment of this utility model, the support base 1 is made of metal.

[0033] In this embodiment, the support base 1 is made of high-strength metal material, preferably 304 stainless steel or aluminum alloy (with anodized surface). This type of material not only has excellent pressure resistance and corrosion resistance, preventing rust from long-term contact with carrier gas, but also provides stable support for the protective shell 2, air inlet pipe 3, and air outlet pipe 4, preventing the device from shifting due to vibration or external force, and ensuring the sealing of the gas circuit connection and the overall structural stability.

[0034] In one embodiment of this utility model, the support base 1 and the protective shell 2 are connected by a snap fastener (not shown in the figure) to achieve detachable assembly of the two.

[0035] It should be noted that in this invention, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is used only to illustrate the technical solution of this utility model, and is not intended to limit the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the protection scope of this utility model.

Claims

1. A recyclable gas purification device, characterized in that, The device includes a support base and a protective housing detachably connected to the support base. One end of the protective housing connected to the support base has an opening. The interior of the protective housing contains an air inlet pipe, an air outlet pipe, and a venting baffle. The air inlet pipe is connected to an external carrier gas source via a first pipe located inside the support base. The air outlet pipe is connected to a downstream user end outside the support base via a second pipe located inside the support base. The air inlet pipe and the air outlet pipe are vertically inserted through the venting baffle, which is movable up and down along the air inlet pipe and the air outlet pipe. A molecular sieve is positioned above the venting baffle to adsorb impurities in the carrier gas. The carrier gas entering the air inlet pipe passes through the molecular sieve and flows out through the air outlet pipe. The molecular sieve is replaced through the opening after use.

2. The recyclable gas purification device according to claim 1, characterized in that, The height of the air inlet pipe outlet is higher than the height of the air outlet pipe inlet.

3. The recyclable gas purification device according to claim 2, characterized in that, The venting baffle is located below the air outlet inlet.

4. The recyclable gas purification device according to claim 1, characterized in that, The breathable baffle is a porous metal mesh or a glass fiber filter membrane.

5. The recyclable gas purification device according to claim 1, characterized in that, The protective casing is made of glass.

6. The recyclable gas purification device according to claim 1, characterized in that, The protective casing is made of glass.

7. The recyclable gas purification device according to claim 1, characterized in that, The support base and the protective housing are connected by snap-fit.

8. The recyclable gas purification device according to any one of claims 1-7, characterized in that, Both the outlet of the air inlet pipe and the inlet of the air outlet pipe are equipped with filter screens, and the pore size of the filter screens is smaller than the diameter of the molecular sieve.

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