Detection head of gas detector
By designing a protective cover, dust filter, and reset spring limiting structure on the gas detector head, the problem of dust blockage was solved, enabling stable operation and accurate detection of the detector.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGLI (TIANJIN) SAFETY TECH CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional gas detector probes are easily clogged or covered by dust, causing the sensor to be unable to accurately detect gas concentration and resulting in inaccurate detection results.
A gas detector probe head was designed, which adopts a combination structure of protective cover and dust filter. Through threaded connection and return spring, the limit block and push ring are driven to perform multiple limit movements, which enhances the installation firmness of the protective cover and prevents dust from entering.
It effectively blocks dust particles, ensures stable operation of the detector, prevents dust adhesion and accumulation, and improves the accuracy and reliability of detection.
Smart Images
Figure CN224152455U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detector technology, and in particular to a gas detector probe. Background Technology
[0002] As is well known, the gas detector head is the core component of a gas detector, and its main function is to sense and detect the composition and concentration of gases in the surrounding environment. Through specific detection principles, such as catalytic combustion, electrochemistry, and infrared absorption, it converts the presence and concentration information of gases into electrical signals or other measurable signals. These signals are then transmitted to the detector's control unit for processing and analysis, ultimately achieving qualitative and quantitative detection of the gas. This allows for timely alarms when gas concentrations exceed safety thresholds, ensuring the safety of personnel and equipment.
[0003] However, in traditional gas detector probes, dust can often clog the sensor's air inlet during use, making it difficult for gas to enter the detection area smoothly. This can lead to the sensor being unable to accurately detect gas concentration, or dust covering the sensor surface can hinder the contact between the gas and the sensitive element, causing the detection results to be inaccurate and unable to truly reflect the gas concentration in the environment. Therefore, there is an urgent need for technological improvements. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a gas detector probe. When in use, the probe is physically protected by a protective cover, and a dust filter effectively blocks dust particles from entering, preventing their accumulation and ensuring stable operation of the detector. A threaded connection provides initial positioning of the protective cover, while a return spring drives the limiting block and push ring to move laterally, causing the positioning rod to engage with the positioning hole, achieving secondary positioning of the protective cover. This dual-positioning design greatly enhances the firmness of the protective cover installation, preventing it from falling off due to external forces.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A gas detector probe head includes a detector. The probe head is disposed on the upper part of the outer wall of the front end of the detector. The outer wall of the probe head has multiple sliding grooves. A slider is slidably connected to the inner wall of each sliding groove. A return spring is fixedly connected to the rear end of the outer wall of each slider. A push ring is fixedly connected to the upper end of each slider. A protective cover is disposed on the front end of the outer wall of the probe head. The outer wall of the front end of the protective cover has multiple vent holes. A dust filter is disposed on the inner wall of each vent hole.
[0007] Compared with existing gas detector probes, this gas detector probe, through the above technical solution, is protected by a protective cover and a dust filter to prevent dust from entering, blocking dust particles, preventing their adhesion and accumulation, and ensuring detector stability. The threaded connection facilitates the limiting of the protective cover, and the reset spring drives the limiting block and push ring to move laterally, so that multiple positioning rods engage with the positioning holes, which can provide secondary limiting of the protective cover, enhance the firmness of the protective cover installation, and prevent it from falling off due to external forces.
[0008] Furthermore, limit grooves are provided on both sides of the inner wall of the slide, and limit blocks are fixedly connected to both sides of the outer wall of the slider.
[0009] The above technical solution allows the limiting block to move within the limiting groove in coordination with the sliding block.
[0010] Furthermore, each of the limiting blocks is slidably connected to the inner wall of the limiting groove;
[0011] With the above technical solution, the limiting blocks are all slidably connected to the inner wall of the limiting groove, which facilitates the limiting of the slider and prevents it from deviating during the movement.
[0012] Furthermore, the outer wall of the front end of the probe is provided with external threads, and the protective cover is threadedly connected to the external threads;
[0013] The above technical solution allows for easy installation or removal of the protective cover via external threads.
[0014] Furthermore, the outer wall of the rear end of the protective cover is provided with multiple positioning holes, and the outer wall of the front end of the push ring is fixedly connected with multiple positioning rods.
[0015] The above technical solution facilitates positioning with the positioning hole using the positioning rod.
[0016] Furthermore, each of the positioning rods is engaged with a positioning hole.
[0017] The above technical solution allows the positioning rods to be engaged with the positioning holes to limit the movement of the protective cover and prevent external forces from causing it to rotate.
[0018] Furthermore, the rear ends of the reset springs are all fixedly connected to the rear ends of the inner wall of the slide groove;
[0019] The above technical solution allows the return spring to easily extend and retract in coordination with the movement of the slider.
[0020] This utility model has the following beneficial effects:
[0021] 1. The gas detector probe proposed in this utility model, compared with the existing gas detector probes, has the following advantages: when in use, the probe is protected by a protective cover, and the dust filter prevents dust from entering, blocking dust particles and preventing them from adhering and accumulating, thus ensuring the stability of the detector. The threaded connection facilitates the limiting of the protective cover, and the return spring drives the limiting block and push ring to move laterally, so that multiple positioning rods are engaged with the positioning holes, which can provide secondary limiting of the protective cover, enhance the firmness of the protective cover installation, and prevent it from falling off due to external forces. Attached Figure Description
[0022] Figure 1 This is an isometric view of a gas detector probe according to the present invention.
[0023] Figure 2 This is an explosion diagram of the protective cover in the probe head of a gas detector according to the present invention;
[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0025] Figure 4 This is an axial cross-sectional view of the detector head in a gas detector head proposed in this utility model;
[0026] Figure 5 for Figure 4 Enlarged view of point B in the middle.
[0027] Legend:
[0028] 1. Detector; 11. Detector head; 12. External thread; 13. Slide groove; 14. Slider; 15. Limiting groove; 16. Limiting block; 17. Return spring; 18. Push ring; 19. Positioning rod; 2. Protective cover; 21. Vent hole; 22. Dust filter; 23. Positioning hole. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Reference Figure 1-5An embodiment of this utility model provides a gas detector probe head, including a detector 1. A probe head 11 is provided on the upper part of the outer wall of the front end of the detector 1. Multiple sliding grooves 13 are opened on the outer wall of the probe head 11. Slider 14 is slidably connected to the inner wall of each sliding groove 13. A return spring 17 is fixedly connected to the rear end of the outer wall of each slider 14. A push ring 18 is fixedly connected to the upper end of each slider 14. A protective cover 2 is provided on the front end of the outer wall of the probe head 11. Multiple vent holes 21 are opened on the outer wall of the front end of the protective cover 2. A dust filter 22 is provided on the inner wall of each vent hole 21.
[0031] Compared with existing gas detector probes, this gas detector probe, through the above technical solution, uses a protective cover 2 to protect the probe 11, and a dust filter 22 to prevent dust from entering, blocking dust particles, preventing them from adhering and accumulating, and ensuring the stability of the detector 1. The threaded connection facilitates the limiting of the protective cover 2, and the reset spring 17 drives the limiting block 16 and the push ring 18 to move laterally, so that multiple positioning rods 19 are engaged with the positioning holes 23, which can provide secondary limiting of the protective cover 2, enhance the firmness of the installation of the protective cover 2, and prevent it from falling off due to external forces.
[0032] Limiting grooves 15 are provided on both sides of the inner wall of the slide 13, and limiting blocks 16 are fixedly connected to both sides of the outer wall of the slider 14.
[0033] Through the above technical solution, the limiting block 16 can move within the limiting groove 15 to facilitate the sliding of the slider 14.
[0034] Each of the limiting blocks 16 is slidably connected to the inner wall of the limiting groove 15;
[0035] With the above technical solution, the limiting blocks 16 are all slidably connected to the inner wall of the limiting groove 15, which facilitates the limiting of the slider 14 and prevents it from deviating during the movement.
[0036] The outer wall of the front end of the probe 11 is provided with an external thread 12, and the protective cover 2 is threadedly connected to the external thread 12.
[0037] The above technical solution facilitates the installation or removal of the protective cover 2 via the external thread 12.
[0038] Multiple positioning holes 23 are provided on the outer wall of the rear end of the protective cover 2, and multiple positioning rods 19 are fixedly connected to the outer wall of the front end of the push ring 18.
[0039] The above technical solution facilitates positioning with the positioning hole 23 via the positioning rod 19.
[0040] The positioning rods 19 are all engaged with the positioning holes 23 respectively;
[0041] Through the above technical solution, the positioning rods 19 are respectively engaged with the positioning holes 23 to facilitate the limiting of the protective cover 2 and prevent external force from causing it to rotate.
[0042] The rear ends of the return springs 17 are fixedly connected to the rear ends of the inner wall of the slide groove 13 respectively;
[0043] The above technical solution allows the return spring 17 to extend and retract in coordination with the movement of the slider 14.
[0044] Working principle: When in use, the push ring 18 is first pushed and squeezed, which drives the slider 14 to slide in the groove 13, causing the return spring 17 to be compressed and stored. At this time, the protective cover 2 is connected by the external thread 12 to achieve the initial installation limit. When the protective cover 2 is screwed to the appropriate position, the push block is released, the return spring 17 releases its elasticity, and drives the slider 14 and the positioning rod 19 to move laterally, so that the positioning rod 19 is locked into the positioning hole 23 at the rear end of the protective cover 2, completing the secondary limit and ensuring that the protective cover 2 is stably installed. In actual use, outside air enters through the vent hole 21 of the protective cover 2, and the dust filter 22 effectively blocks dust particles to prevent them from entering the inside of the detector head 11, ensuring the stable operation of the detector 1.
[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A gas detector probe head comprising a detector (1), characterised in that: The detector (1) has a probe head (11) on the upper part of the outer wall of the front end. The outer wall of the probe head (11) has multiple sliding grooves (13). The inner wall of each sliding groove (13) is slidably connected to a slider (14). The rear end of the outer wall of each slider (14) is fixedly connected to a return spring (17). The upper end of each slider (14) is fixedly connected to a push ring (18). The front end of the outer wall of the probe head (11) has a protective cover (2). The outer wall of the front end of the protective cover (2) has multiple vent holes (21). The inner wall of each vent hole (21) is provided with a dust filter (22).
2. A gas detector probe according to claim 1, characterised in that: Limiting grooves (15) are provided on both sides of the inner wall of the slide (13), and limiting blocks (16) are fixedly connected to both sides of the outer wall of the slider (14).
3. A gas detector probe according to claim 2, wherein: The limiting blocks (16) are all slidably connected to the inner wall of the limiting groove (15).
4. A gas detector probe according to claim 1, characterised in that: The outer wall of the front end of the probe (11) is provided with an external thread (12), and the protective cover (2) is threadedly connected to the external thread (12).
5. A gas detector probe according to claim 1, wherein: The outer wall of the rear end of the protective cover (2) is provided with multiple positioning holes (23), and the outer wall of the front end of the push ring (18) is fixedly connected with multiple positioning rods (19).
6. A gas detector probe according to claim 5, wherein: Each of the positioning rods (19) is engaged with the positioning hole (23).
7. A gas detector probe according to claim 1, wherein: The rear ends of the reset springs (17) are fixedly connected to the rear ends of the inner walls of the grooves (13).