Gas filtering device for gas detection

Abstract

The utility model relates to the technical field of gas filtering, and discloses a gas filtering device for gas detection, which comprises a bottom ring and a cover frame arranged on the bottom ring, the bottom ring comprises a bottom plate, a gas inlet pipe inserted in the middle of the bottom plate and gas outlet pipes arranged on the outer side of the gas inlet pipe in an array mode, an inner support is fixed at the top end of the bottom plate, and a screw rod is fixed at the top end of the inner support. The cover frame is arranged at the top end of the bottom plate in a sleeving mode, positioning rings are fixed to the inner side wall of the bottom end of the cover frame and the inner side wall of the top end of the bottom plate correspondingly, filtering pieces are fixed in the positioning rings, a round hole is formed in the middle of the cover frame, and the screw penetrates through the round hole and is fixedly meshed with the rotary buckle. The inner bracket-screw rod moves towards the cover frame, and the screw rod protrudes out of the cover frame and is screwed and fixed through the rotary buckle, so that adjustment can be carried out according to filter piece structures with different widths, the application range of the device is expanded, and the practical value of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas power device technology, and in particular to a gas filtration device for gas detection. Background Technology

[0002] In the field of gas detection, to ensure the accuracy and reliability of detection results, the gas is usually filtered before entering the detection instrument to remove interfering substances such as solid particles, water vapor, and impurities. However, existing gas filtration devices for gas detection have many problems in practical use.

[0003] Traditional gas filtration devices typically consist of multiple independent components, including an inlet pipe, a filter chamber, an outlet pipe, and sealing components. During installation, not only must these components be accurately connected sequentially, but the airtightness of each connection point must also be ensured to prevent gas leaks from affecting test results. This often involves tightening multiple bolts, installing and adjusting sealing rings, and aligning and connecting pipes, increasing the workload for installers, extending the installation and commissioning time, and reducing work efficiency. Furthermore, the complex connection structure increases the difficulty of maintenance and repair; if a connection point malfunctions, the troubleshooting and repair process becomes cumbersome.

[0004] Filter paper replacement is difficult. As a core component of gas filtration devices, filter paper becomes clogged with impurities after prolonged use, leading to decreased filtration efficiency and requiring regular replacement. However, the existing filter paper installation structure is poorly designed. The filter paper is typically fixed within a closed filtration chamber, requiring the disassembly of multiple components, opening the chamber, removing the old filter paper, and installing the new one. This complex process is prone to damaging the filter paper or improper installation, affecting filtration performance. Furthermore, frequent disassembly can cause wear on sealing components, reducing the device's sealing performance and lifespan.

[0005] Therefore, we propose a gas filtration device for gas detection. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a gas filtration device for gas detection, thereby resolving the issues raised in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a gas filtration device for gas detection, comprising a bottom ring and a cover frame disposed on the bottom ring. The bottom ring includes a bottom plate, an inlet pipe inserted into the middle of the bottom plate, and an outlet pipe arrayed outside the inlet pipe. An inner support is fixed to the top of the bottom plate, and a screw is fixed to the top of the inner support. The cover frame is sleeved on the top of the bottom plate, and positioning rings are fixed to the inner sidewall of the bottom end of the cover frame and the inner sidewall of the top end of the bottom plate. A filter element is fixed inside the positioning ring. A circular hole is opened in the middle of the cover frame, and the screw passes through the circular hole and engages with a buckle for fixation.

[0008] Preferably, the bottom outer side of the cover frame is bent outward, the top outer side wall of the base plate is bent outward, and the cover frame and the base plate are in interference contact.

[0009] Preferably, the filter element includes an inner plate, filter paper sleeved on the outside of the inner plate, and a sieve sleeved on the outside of the filter paper, wherein the filter paper has a corrugated structure, and the inner plate has sieve holes in the middle.

[0010] Preferably, the distance between the base plate and the cover frame is greater than the height of the air outlet pipe.

[0011] Preferably, the inner support has a trapezoidal cross-section, and the thimble is a frustum-shaped structure with a smaller top and a larger bottom, and an anti-slip plate is fixed to the outside of the thimble.

[0012] Preferably, both sets of positioning rings are circular ring structures with grooves at the top, and the filter element is engaged in the grooves of the two sets of positioning rings.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. In this device, through the combination structure of the bottom ring and the cover frame, the user can achieve a preliminary connection by interfering with the bottom plate and the cover frame structure. The inner support-screw moves towards the cover frame, the screw protrudes from the cover frame, and is tightened and fixed by the buckle. Therefore, it can be adjusted according to the filter structure of different widths, expanding the application range of this device and improving its practical value.

[0015] 2. In this device, the filter element is secured within two sets of positioning rings. Through the three-layer filtration effect of filter screen-inner plate-filter paper, gas enters from the inlet pipe and gathers within the filter element. Due to the external high pressure, the gas can pass through the outer filter element and exit through the outlet pipe, thus achieving the gas filtration function. The three-layer filtration structure is secured by positioning rings on the base plate and cover frame, requiring no other fixing structure, which facilitates quick and easy fixing of the filter element. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0017] Figure 2 This is the second schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 4 for Figure 3 Structural breakdown diagram;

[0020] Figure 5 This is an exploded view of the filter element structure of this utility model.

[0021] Explanation of key symbols:

[0022] 1. Bottom ring; 11. Base plate; 12. Air outlet pipe; 13. Air inlet pipe; 14. Inner support; 15. Screw; 2. Cover frame; 3. Turnbuckle; 4. Positioning ring; 5. Filter element; 51. Filter paper; 52. Inner plate; 53. Screen. Detailed Implementation

[0023] Please see Figures 1 to 5 In the embodiments of this utility model;

[0024] Example 1: A gas filtering device for gas detection includes a bottom ring 1 and a cover frame 2 disposed on the bottom ring 1. The bottom ring 1 includes a bottom plate 11, an inlet pipe 13 inserted into the middle of the bottom plate 11, and an outlet pipe 12 arranged in an array outside the inlet pipe 13. An inner support 14 is fixed to the top of the bottom plate 11, and a screw 15 is fixed to the top of the inner support 14. The cover frame 2 is sleeved on the top of the bottom plate 11, and positioning rings 4 are fixed on the inner sidewall of the bottom end of the cover frame 2 and the inner sidewall of the top end of the bottom plate 11. The filter element 5 is fixed inside. A circular hole is opened in the middle of the cover frame 2. The screw 15 passes through the circular hole and engages with the buckle 3 for fixation. Through the combination structure of the bottom ring 1 and the cover frame 2, the user can achieve a preliminary connection by interference contact between the bottom plate 11 and the cover frame 2. The inner support 14 and the screw 15 move towards the cover frame 2. The screw 15 protrudes from the cover frame 2 and is tightened by the buckle 3. Therefore, the structure can be adjusted according to the filter element 5 of different widths, which expands the application range of this device and improves its practical value.

[0025] Example 2: Refer to the attached instruction manual Figure 2-5It can be seen that the difference between Embodiment 2 and Embodiment 1 is that: the bottom outer side of the cover frame 2 is bent outward, the top outer side wall of the base plate 11 is bent outward, and the cover frame 2 and the base plate 11 are in interference contact; the filter element 5 includes an inner plate 51, filter paper 52 sleeved on the outside of the inner plate 51, and a sieve 53 sleeved on the outside of the filter paper 52, and the filter paper 52 has a corrugated structure, and the inner plate 51 has a sieve hole in the middle; the distance between the base plate 11 and the cover frame 2 is greater than the height of the air outlet pipe 12; the cross section of the inner support 14 is a trapezoidal structure, and the buckle 3 is a frustum-shaped structure with a smaller top and a larger bottom, and is fixed on the outside of the buckle 3. It has an anti-slip plate; both sets of positioning rings 4 are circular ring structures with grooves at the top, and the filter element 5 is locked in the grooves of the two sets of positioning rings 4; in this device, the filter element 5 is locked in the two sets of positioning rings 4, and through the three-layer filtration effect of filter screen-inner plate 52-filter paper 51, the gas enters from the air inlet pipe 13 and gathers in the filter element 5. Due to the external high pressure, the gas can pass through the outer filter element 5 and exit through the air outlet pipe 12, thus realizing the gas filtration function. The three-set filtration function structure is locked by the positioning rings 4 on the base plate 11 and the cover frame 2, without the need for other fixing structures, which facilitates the quick and easy fixing and connection of the filter element 5.

[0026] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A gas filtering device for gas detection, characterized by, The device includes a bottom ring (1) and a cover frame (2) set on the bottom ring (1). The bottom ring (1) includes a bottom plate (11), an air inlet pipe (13) inserted in the middle of the bottom plate (11), and an air outlet pipe (12) arranged in an array outside the air inlet pipe (13). An inner support (14) is fixed at the top of the bottom plate (11), and a screw (15) is fixed at the top of the inner support (14). The cover frame (2) is sleeved on the top of the bottom plate (11), and a positioning ring (4) is fixed on the inner side wall of the bottom end of the cover frame (2) and the inner side wall of the top end of the bottom plate (11). A filter element (5) is fixed inside the positioning ring (4). A round hole is opened in the middle of the cover frame (2), and the screw (15) passes through the round hole and engages with the buckle (3) for fixation.

2. The gas filter for gas detection according to claim 1, wherein: The bottom outer side of the cover frame (2) bends outward, and the top outer side wall of the base plate (11) bends outward. The cover frame (2) and the base plate (11) are in interference contact.

3. The gas filter for gas detection according to claim 1, wherein: The filter element (5) includes an inner plate (51), a filter paper (52) sleeved on the outside of the inner plate (51), and a sieve (53) sleeved on the outside of the filter paper (52). The filter paper (52) has a corrugated structure, and the inner plate (51) has sieve holes in the middle.

4. The gas filter for gas detection according to claim 3, wherein: The distance between the base plate (11) and the cover frame (2) is greater than the height of the air outlet pipe (12).

5. The gas filter for gas detection according to claim 1, wherein: The inner support (14) has a trapezoidal cross-section, and the swivel (3) is a frustum-shaped structure with a smaller top and a larger bottom, and an anti-slip plate is fixed on the outside of the swivel (3).

6. A gas filtering device for gas detection as described in claim 5, characterized in that: Both sets of positioning rings (4) are circular ring structures with grooves at the top, and the filter element (5) is fitted into the grooves of the two sets of positioning rings (4).

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