Carrier gas purifying and filtering pipe of oxygen-nitrogen-hydrogen analyzer

Abstract

The utility model relates to the technical field of purification filter pipes, in particular to an oxygen-nitrogen-hydrogen analyzer carrier gas purification filter pipe which comprises a main pipe, a filter pipe is arranged on one side of the main pipe, and a first connecting block is fixedly connected to the outer side of the end, close to the main pipe, of the filter pipe. A second connecting block fixedly connected to the outer side of the main pipeline is arranged on one side of the first connecting block, round holes penetrating through the first connecting block and the second connecting block are formed in one side of the first connecting block and one side of the second connecting block, bolts are arranged on the inner sides of the round holes, and nuts are spirally connected to the outer sides of the bolts; the first connecting block, the second connecting block, the round hole, the bolt, the nut, the groove, the pressing ring and the sealing ring are arranged on the inner side of the main pipeline, a groove is formed in the end, close to the filter pipe, of the main pipeline, a pressing ring is fixedly connected to the end, close to the groove, of the filter pipe, and the sealing ring is arranged on the inner side of the groove. And the filter pipe can be replaced more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of purification filter tubes, in particular to a carrier gas purification filter tube for an oxygen, nitrogen and hydrogen analyzer. Background Art

[0002] Oxygen, nitrogen and hydrogen analyzer is an instrument used to analyze and measure the content of oxygen, nitrogen, hydrogen and other components in gas. It is usually used in various industrial and laboratory environments to monitor the purity and quality of the gas. The working principle of oxygen, nitrogen and hydrogen analyzer is usually based on spectral analysis, mass spectrometry, thermal conductivity analysis and other technologies. Oxygen, nitrogen and hydrogen analyzer has the characteristics of high precision, high sensitivity and rapid response. It can monitor the content of oxygen, nitrogen, hydrogen and other components in gas in real time, which is of great significance for ensuring gas quality and safe production. In practical applications, oxygen, nitrogen and hydrogen analyzer is widely used in air separation equipment, chemical industry, steel industry, semiconductor industry and other fields. During the analysis process, a small amount of graphite powder is installed at the bottom of the graphite crucible for rapid cooling. With the circulation of inert gas, the graphite powder is blocked on the quartz wool in the carrier gas purification filter tube.

[0003] In the prior art, since the gas analyzer needs to work continuously, the filter tube needs to be replaced and cleaned every once in a while. However, the replacement of the existing filter tube is not convenient, and there is no guarantee that replacing the filter tube back and forth will not cause pipeline leakage. When cleaning the existing filter tube, it is inconvenient to clean the impurities inside it, and the condition of the impurities inside it cannot be observed during use. Therefore, in view of the above problems, a carrier gas purification filter tube for an oxygen, nitrogen and hydrogen analyzer is proposed. Utility Model Content

[0004] The utility model aims to provide a carrier gas purification filter tube for an oxygen, nitrogen and hydrogen analyzer to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A carrier gas purification filter tube for an oxygen, nitrogen and hydrogen analyzer comprises a main pipeline, a filter tube is provided on one side of the main pipeline, a first connecting block is fixedly connected to the outer side of one end of the filter tube close to the main pipeline, a second connecting block is fixedly connected to the outer side of the main pipeline on one side of the first connecting block, a circular hole penetrating the first connecting block and the second connecting block is provided on one side of the first connecting block and the second connecting block, a bolt is provided on the inner side of the circular hole, a nut is spirally connected to the outer side of the bolt, a groove is provided on the end of the main pipeline close to the filter tube, a clamping ring is fixedly connected to the end of the filter tube close to the groove, and a sealing ring is provided on the inner side of the groove.

[0007] Preferably, a slide groove is provided on the inner side of the filter tube, a slider is slidably connected to the inner side of the slide groove, a filter screen is fixedly connected to the end of the slider away from the slide groove, a limit rod is slidably connected to the inner side of the filter screen, a return spring is provided on the outer side of the limit rod, a locking groove which is engaged with the limit rod is provided on the inner side of the filter tube, and a sapphire window is embedded and connected to the outer side of the filter tube.

[0008] Preferably, the number of the slide grooves and the sliders is eight, the number of the filter screens is two, the number of the limit rods, the return springs and the locking grooves is eight, one end of the return spring is fixedly connected to the limit rod, and the other end of the return spring is fixedly connected to the inner side of the filter screen.

[0009] Preferably, the first connecting block and the second connecting block are of the same shape and size, the number of the first connecting block and the second connecting block are both eight, and the inner diameter of the circular hole is larger than the outer diameter of the bolt.

[0010] Preferably, the number of the bolts and nuts is sixteen, the number of the circular holes is thirty-two, the volume of the groove is larger than the volume of the clamping ring, and the clamping ring and the sealing ring fit tightly.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the filter tube, the first connecting block, the second connecting block, the round hole, the bolt, the nut, the groove, the clamping ring and the sealing ring are arranged, so that the filter tube can be replaced more conveniently and the pipeline leakage caused by the excessive replacement of the filter tube can be prevented. First, the clamping ring on the filter tube is inserted into the inner side of the groove on the main pipeline, and then the filter tube is rotated to align the first connecting block and the second connecting block, so that the round hole can be aligned, and then the bolt is inserted into the inner side of the round hole, and the nut is tightened on the outer side of the bolt until the clamping ring and the sealing ring are tightly fitted, so that the installation of the filter tube can be completed. When the replacement frequency is too many, the sealing ring can be taken out from the inner side of the groove and replaced with a new sealing ring to prevent pipeline leakage;

[0013] 2. In the utility model, the slide groove, slider, filter screen, limit rod, return spring, engaging groove and sapphire window are provided, which can make it easier to clean the impurities inside the filter tube. When it is observed from the sapphire window that there are too many impurities inside the filter tube, the filter tube is first removed from the main pipeline, and then the limit rod is pulled. The limit rod slides and drives the return spring to stretch, and the limit rod moves out from the inside of the engaging groove. Then the filter screen is taken out, and the slider slides inside the slide groove to clean the filter screen and the inside of the filter tube. Then a new filter screen is installed, and the limit rod is pulled. The limit rod slides and drives the return spring to stretch. Then the filter screen is inserted into the inside of the filter tube, and the slider slides inside the slide groove until the limit rod moves to the outside of the engaging groove. At this time, the return spring resets and drives the limit rod to move to the inside of the engaging groove, and the filter screen can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall disassembly of the utility model;

[0016] Figure 3 This is a schematic diagram of the main pipeline structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the filter tube of the utility model;

[0018] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at point A.

[0019] In the figure: 1. main pipeline; 2. filter tube; 3. first connecting block; 4. second connecting block; 5. round hole; 6. bolt; 7. nut; 8. groove; 9. clamping ring; 10. sealing ring; 11. slide groove; 12. slider; 13. filter screen; 14. limit rod; 15. reset spring; 16. snap-fit ​​groove; 17. sapphire window. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A carrier gas purification filter tube for an oxygen, nitrogen and hydrogen analyzer comprises a main pipeline 1, a filter tube 2 is arranged on one side of the main pipeline 1, a first connecting block 3 is fixedly connected to the outer side of one end of the filter tube 2 close to the main pipeline 1, a second connecting block 4 fixedly connected to the outer side of the main pipeline 1 is arranged on one side of the first connecting block 3, a circular hole 5 penetrating the first connecting block 3 and the second connecting block 4 is arranged on one side of the first connecting block 3 and the second connecting block 4, a bolt 6 is arranged inside the circular hole 5, a nut 7 is spirally connected to the outer side of the bolt 6, a groove 8 is arranged on the end of the main pipeline 1 close to the filter tube 2, a clamping ring 9 is fixedly connected to the end of the filter tube 2 close to the groove 8, and a sealing ring 10 is arranged inside the groove 8.

[0025] A slide groove 11 is provided inside the filter tube 2, and a slider 12 is slidably connected inside the slide groove 11. A filter screen 13 is fixedly connected to one end of the slider 12 away from the slide groove 11. A limit rod 14 is slidably connected inside the filter screen 13. A return spring 15 is provided outside the limit rod 14. A snap-fit ​​groove 16 that is snap-fitted and connected to the limit rod 14 is provided inside the filter tube 2. A sapphire window 17 is embedded and connected to the outside of the filter tube 2. The number of the slide grooves 11 and the slider 12 are both eight, the number of the filter screen 13 is two, the limit rod 14, the return spring 15 There are eight locking grooves 16, one end of the reset spring 15 is fixedly connected to the limit rod 14, and the other end of the reset spring 15 is fixedly connected to the inner side of the filter screen 13. The first connecting block 3 and the second connecting block 4 are the same in shape and size. There are eight first connecting blocks 3 and the second connecting blocks 4. The inner diameter of the circular hole 5 is larger than the outer diameter of the bolt 6. The number of the bolts 6 and the nuts 7 is sixteen, and the number of the circular holes 5 is thirty-two. The volume of the groove 8 is larger than the volume of the clamping ring 9, and the clamping ring 9 and the sealing ring 10 fit tightly.

[0026] Working process: first, insert the clamping ring 9 on the filter tube 2 into the inner side of the groove 8 on the main pipeline 1, then rotate the filter tube 2 to align the first connecting block 3 and the second connecting block 4, so that the round hole 5 can be aligned, then insert the bolt 6 into the inner side of the round hole 5, tighten the nut 7 on the outer side of the bolt 6 until the clamping ring 9 and the sealing ring 10 fit tightly, and the installation of the filter tube 2 can be completed. When the number of replacements is too many, the sealing ring 10 can be taken out from the inner side of the groove 8 and replaced with a new sealing ring 10 to prevent pipeline leakage. When it is observed from the sapphire window 17 that there are too many impurities inside the filter tube 2, first remove the filter tube 2 from the main pipeline 1, and then pull Move the limit rod 14, the limit rod 14 slides and drives the return spring 15 to stretch, and the limit rod 14 moves out from the inner side of the engaging groove 16, and then the filter screen 13 is taken out, and the slider 12 slides on the inner side of the slide groove 11, and the filter screen 13 and the inner side of the filter tube 2 can be cleaned, and then a new filter screen 13 is installed, and the limit rod 14 is pulled, and the limit rod 14 slides and drives the return spring 15 to stretch, and then the filter screen 13 is inserted into the inner side of the filter tube 2, and the slider 12 slides on the inner side of the slide groove 11 until the limit rod 14 moves to the outside of the engaging groove 16. At this time, the return spring 15 resets and drives the limit rod 14 to move to the inner side of the engaging groove 16, and the replacement of the filter screen 13 is completed.

[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carrier gas purification filter tube for an oxygen, nitrogen and hydrogen analyzer, comprising a main pipeline (1), characterized in that: A filter tube (2) is provided on one side of the main pipeline (1); a first connection block (3) is fixedly connected to the outer side of one end of the filter tube (2) close to the main pipeline (1); a second connection block (4) is fixedly connected to the outer side of the main pipeline (1) on one side of the first connection block (3); a circular hole (5) penetrating the first connection block (3) and the second connection block (4) is provided on one side of the first connection block (3) and the second connection block (4); a bolt (6) is provided inside the circular hole (5); a nut (7) is spirally connected to the outer side of the bolt (6); a groove (8) is provided on the end of the main pipeline (1) close to the filter tube (2); a clamping ring (9) is fixedly connected to the end of the filter tube (2) close to the groove (8); a sealing ring (10) is provided inside the groove (8).

2. The oxygen, nitrogen and hydrogen analyzer carrier gas purification filter tube according to claim 1, characterized in that: A slide groove (11) is provided on the inner side of the filter tube (2), a slider (12) is slidably connected to the inner side of the slide groove (11), a filter screen (13) is fixedly connected to one end of the slider (12) away from the slide groove (11), a limit rod (14) is slidably connected to the inner side of the filter screen (13), a return spring (15) is provided on the outer side of the limit rod (14), a snap-fit ​​groove (16) snap-fitted to the limit rod (14) is provided on the inner side of the filter tube (2), and a sapphire window (17) is embedded and connected to the outer side of the filter tube (2).

3. The oxygen, nitrogen and hydrogen analyzer carrier gas purification filter tube according to claim 2, characterized in that: The number of the slide grooves (11) and the sliders (12) is eight, the number of the filter screens (13) is two, the number of the limit rods (14), the return springs (15) and the engaging grooves (16) is eight, one end of the return spring (15) is fixedly connected to the limit rod (14), and the other end of the return spring (15) is fixedly connected to the inner side of the filter screen (13).

4. The oxygen, nitrogen and hydrogen analyzer carrier gas purification filter tube according to claim 1, characterized in that: The first connecting block (3) and the second connecting block (4) are of the same shape and size, the number of the first connecting block (3) and the number of the second connecting block (4) are both eight, and the inner diameter of the circular hole (5) is larger than the outer diameter of the bolt (6).

5. The oxygen, nitrogen and hydrogen analyzer carrier gas purification filter tube according to claim 1, characterized in that: The number of the bolts (6) and nuts (7) is sixteen, the number of the circular holes (5) is thirty-two, the volume of the groove (8) is larger than the volume of the clamping ring (9), and the clamping ring (9) and the sealing ring (10) fit tightly.

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