Gas sensor device

Abstract

The utility model discloses a gas sensor device. The gas sensor device comprises a bottom pad, a gas sensor body, a protective net cover and a protective shell, the protective shell comprises a fixed shell and a movable shell, a through groove is formed in the fixed shell, and the movable shell can block the through groove. When the filter screen is cleaned, the through groove is blocked by the moving shell, so that the gas sensor body is located in the closed second accommodating space, and dust, particulate matters and fine impurities on the filter screen cannot fall onto a sensitive element of the gas sensor. According to the gas sensor device provided by the utility model, the protective shell is additionally arranged, so that the gas sensor is positioned in a closed space when the filter screen is cleaned, and dust, particulate matters and fine impurities on the filter screen are prevented from falling off and adhering to a sensitive element of the gas sensor to influence subsequent detection of the gas sensor; therefore, the detection precision of the gas sensor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sensors, in particular to a gas sensor device. Background Art

[0002] A gas sensor is a converter that converts the volume fraction of a certain gas into a corresponding electrical signal. Generally, a gas sensor is equipped with a filter to prevent dust, particles, impurities, etc. from entering the sensor, thereby protecting the sensor elements and internal circuits and ensuring the performance and accuracy of the sensor. Dust, particles and fine impurities in the air will have a negative impact on the sensitive elements and internal circuits of the sensor. By setting up a filter, these impurities can be filtered out to prevent them from entering the sensor and reducing the accuracy of the sensitive elements.

[0003] The existing method of cleaning the filter is generally to use a vacuum cleaner or a soft brush to remove dust, particles and fine impurities on the filter. However, during the cleaning process, the dust, particles and fine impurities originally attached to the filter will fall off and stick to the sensitive element of the gas sensor, affecting the subsequent detection of the gas sensor, thereby reducing the detection accuracy of the gas sensor. Therefore, a gas sensor device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a gas sensor device to solve the technical problem that when cleaning the filter, dust, particles and fine impurities originally stuck to the filter will fall off and stick to the sensitive element of the gas sensor, affecting the subsequent detection of the gas sensor, thereby reducing the detection accuracy of the gas sensor.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A gas sensor device, comprising:

[0007] Base pad;

[0008] A gas sensor body is arranged on the base pad;

[0009] A protective mesh cover is arranged on the base pad, the protective mesh cover and the base pad form a first accommodation space, and the gas sensor body is arranged in the first accommodation space;

[0010] A protective shell is arranged on the base pad, the protective shell is arranged in the first accommodating space, the protective shell and the base pad form a second accommodating space, the gas sensor body is arranged in the second accommodating space, the protective shell includes a fixed shell and a movable shell, the fixed shell is provided with a through groove, and the movable shell can block the through groove to form a closed space for the second accommodating space.

[0011] Optionally, the fixed shell is fixedly disposed on the base pad, the movable shell is disposed on the inner side of the fixed shell, the movable shell is slidably connected to the base pad, a rotating shaft is disposed on the upper end surface of the movable shell, and a first through hole for the rotating shaft to pass through is disposed on the top wall of the fixed shell.

[0012] Optionally, a limiting ring is provided on the rotating shaft, and the top wall of the fixed shell is provided between the limiting ring and the top wall of the movable shell.

[0013] Optionally, the protective mesh cover includes a frame and a filter screen connected to the frame, and a second through hole for the rotating shaft to pass through is provided on the top wall of the frame.

[0014] Optionally, a section of the rotating shaft protruding from the second through hole is provided with a threaded hole, an arc plate surrounding the rotating shaft is provided on the upper end surface of the skeleton, and a first limiting hole and a second limiting hole corresponding to the threaded hole are provided on the arc plate.

[0015] Optionally, an arc-shaped protrusion is provided on the bottom surface of the movable shell, the cross section of the protrusion is T-shaped, and a groove corresponding to the arc-shaped protrusion is provided on the bottom pad.

[0016] Optionally, the lower end surface of the gas sensor body is provided with a pin, and the base pad is provided with a third through hole corresponding to the pin.

[0017] Compared with the prior art, the utility model has the following beneficial effects: during detection, the movable shell does not block the through slot of the protective shell, and the gas flows from the protective mesh cover into the first accommodation space, and then enters the second accommodation space from the through slot for detection by the gas sensor body. When cleaning the filter, the through slot is blocked by the movable shell, so that the gas sensor body is in the closed second accommodation space, and the dust, particles and fine impurities on the filter will not fall onto the sensitive element of the gas sensor. At this time, the fallen dust, particles and fine impurities will only fall on the outer surface of the protective shell, and the dust, particles and fine impurities on the outer surface of the protective shell can be cleaned by a vacuum cleaner or a hair dryer, and then the through slot is opened by the movable shell. Compared with the existing gas sensor, the gas sensor device provided by the utility model adds a protective shell so that when cleaning the filter, the gas sensor is in a closed space, thereby avoiding the dust, particles and fine impurities on the filter falling and sticking to the sensitive element of the gas sensor, affecting the subsequent detection of the gas sensor, thereby reducing the technical problem of the detection accuracy of the gas sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0020] Figure 1 It is a schematic diagram of the structure of the gas sensor device of the utility model;

[0021] Figure 2 This is an exploded view of the gas sensor device of the present utility model.

[0022] Illustrations: 10. Base pad; 11. Groove; 12. Third through hole; 20. Gas sensor body; 21. Pin; 30. Protective mesh cover; 31. Frame; 32. Filter; 33. Second through hole; 34. Arc plate; 35. First limiting hole; 36. Second limiting hole; 40. Protective shell; 41. Fixed shell; 42. Movable shell; 43. Through groove; 44. Rotating shaft; 45. First through hole; 46. Bump; 47. Threaded hole; 48. Limiting ring. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the invention of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0025] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0026] Reference Figure 1 to Figure 2 The embodiment of the utility model provides a gas sensor device, including a base pad 10, a gas sensor body 20, a protective mesh cover 30 and a protective shell 40. The gas sensor body 20 is arranged on the base pad 10. The gas sensor body 20 is cylindrical, and the base pad 10 is a circular plate with a diameter greater than the diameter of the gas sensor body 20. The lower end surface of the gas sensor body 20 is provided with a pin 21, and the base pad 10 is provided with a third through hole 12 corresponding to the pin 21, and the pin 21 passes through the third through hole 12.

[0027] The protective mesh cover 30 is arranged on the base pad 10, and the protective mesh cover 30 and the base pad 10 form a first accommodation space, and the gas sensor body 20 is arranged in the first accommodation space. The protective mesh cover 30 includes a skeleton 31 and a filter screen 32 connected between the skeleton 31, and a second through hole 33 is provided on the top wall of the skeleton 31. The skeleton 31 is fixedly connected to the base pad 10, and the filter screen 32 is fixedly connected to the skeleton 31. Optionally, the skeleton 31 and the base pad 10 are connected by bolts to achieve a fixed and detachable connection, so as to facilitate the removal of the protective mesh cover 30.

[0028] The protective shell 40 is disposed on the base pad 10 and in the first accommodation space. The protective shell 40 and the base pad 10 form a second accommodation space, and the gas sensor body 20 is disposed in the second accommodation space. The protective shell 40 includes a fixed shell 41 and a movable shell 42. The fixed shell 41 is provided with a through slot 43. The movable shell 42 can block the through slot 43 to form a closed space in the second accommodation space.

[0029] It should be noted that the fixed shell 41 and the movable shell 42 are both formed by connecting a plurality of shell plates, and the through slot 43 is a gap between two adjacent shell plates. Specifically, the through slot 43 is surrounded by two adjacent shell plates and the bottom pad 10.

[0030] The fixed shell 41 is fixedly arranged on the base pad 10, and the movable shell 42 is arranged on the inner side of the fixed shell 41. The fixed shell 41 is fixedly connected to the base pad 10. Optionally, the fixed shell 41 and the base pad 10 are connected by bolts to achieve a fixed and detachable connection. The movable shell 42 is slidably connected to the base pad 10. Optionally, an arc-shaped protrusion 46 is arranged on the bottom surface of the movable shell 42. The cross section of the protrusion 46 is T-shaped. The base pad 10 is provided with a groove 11 corresponding to the arc-shaped protrusion 46. The protrusion 46 can slide in the groove 11 to achieve a sliding connection between the movable shell 42 and the base pad 10.

[0031] The upper end surface of the movable shell 42 is provided with a rotating shaft 44, and the top wall of the fixed shell 41 is provided with a first through hole 45 for the rotating shaft 44 to pass through. The rotating shaft 44 passes through the first through hole 45 and the second through hole 33, that is, part of the rotating shaft 44 is exposed outside the first accommodating space, so that the movable shell 42 can be manually rotated. A limiting ring 48 is provided on the rotating shaft 44, and the limiting ring 48 is arranged between the first through hole 45 and the second through hole 33, and the top wall of the fixed shell 41 is arranged between the limiting ring 48 and the top wall of the movable shell 42, so as to limit the fixed shell 41 from being separated from the movable shell 42. Optionally, the limiting ring 48 is detachably connected to the rotating shaft 44, so as to disassemble the fixed shell 41 and the movable shell 42.

[0032] A threaded hole 47 is provided at a section of the rotating shaft 44 protruding from the second through hole 33, and an arc plate 34 surrounding the rotating shaft 44 is provided on the upper end surface of the skeleton 31, and a first limiting hole 35 and a second limiting hole 36 corresponding to the threaded hole 47 are provided on the arc plate 34, so that after the threaded hole 47 is threadedly connected with the first limiting hole 35 or the second limiting hole 36, the rotating shaft 44 is fixed and cannot rotate. It should be noted that when the threaded hole 47 is threadedly connected with the first limiting hole 35, the through groove 43 is in an unobstructed state; when the threaded hole 47 is threadedly connected with the second limiting hole 36, the through groove 43 is in a blocked state.

[0033] The utility model discloses a gas sensor device, and the specific implementation method is as follows: during detection, the movable shell 42 does not block the through slot 43 of the protective shell 40, and the gas flows from the protective mesh cover 30 into the first accommodation space, and then enters the second accommodation space from the through slot 43, so as to be detected by the gas sensor body 20. When cleaning the filter 32, the through slot 43 is blocked by the movable shell 42, so that the gas sensor body 20 is in the closed second accommodation space, and the dust, particles and fine impurities on the filter 32 will not fall onto the sensitive element of the gas sensor. At this time, the fallen dust, particles and fine impurities will only fall on the outer surface of the protective shell 40, and the dust, particles and fine impurities on the outer surface of the protective shell 40 can be quickly cleaned by a vacuum cleaner or a hair dryer, and then the through slot 43 is opened by the movable shell 42. Compared with the existing gas sensors, the gas sensor device provided by the present invention adds a protective shell 40 to keep the gas sensor in a closed space when cleaning the filter 32, thereby preventing dust, particles and fine impurities on the filter 32 from falling and sticking to the sensitive elements of the gas sensor, affecting the subsequent detection of the gas sensor, thereby reducing the technical problem of the detection accuracy of the gas sensor.

[0034] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A gas sensor device, characterized in that: include: Base pad (10); A gas sensor body (20) is arranged on the base pad (10); A protective mesh cover (30) is arranged on the base pad (10), the protective mesh cover (30) and the base pad (10) forming a first accommodation space, and the gas sensor body (20) is arranged in the first accommodation space; A protective shell (40) is arranged on the base pad (10). The protective shell (40) is arranged in the first accommodation space. The protective shell (40) and the base pad (10) form a second accommodation space. The gas sensor body (20) is arranged in the second accommodation space. The protective shell (40) comprises a fixed shell (41) and a movable shell (42). The fixed shell (41) is provided with a through groove (43). The movable shell (42) can block the through groove (43) so that the second accommodation space forms a closed space.

2. The gas sensor device according to claim 1, characterized in that The fixed shell (41) is fixedly arranged on the bottom pad (10), the movable shell (42) is arranged on the inner side of the fixed shell (41), the movable shell (42) is slidably connected to the bottom pad (10), a rotating shaft (44) is arranged on the upper end surface of the movable shell (42), and a first through hole (45) for the rotating shaft (44) to pass through is arranged on the top wall of the fixed shell (41).

3. The gas sensor device according to claim 2, characterized in that A limiting ring (48) is provided on the rotating shaft (44), and the top wall of the fixed shell (41) is provided between the limiting ring (48) and the top wall of the movable shell (42).

4. The gas sensor device according to claim 2, characterized in that The protective mesh cover (30) comprises a frame (31) and a filter screen (32) connected to the frame (31); a second through hole (33) for the rotating shaft (44) to pass through is provided on the top wall of the frame (31).

5. The gas sensor device according to claim 4, characterized in that A threaded hole (47) is provided on a section of the rotating shaft (44) protruding from the second through hole (33); an arc-shaped plate (34) surrounding the rotating shaft (44) is provided on the upper end surface of the frame (31); and a first limiting hole (35) and a second limiting hole (36) corresponding to the threaded hole (47) are provided on the arc-shaped plate (34).

6. The gas sensor device according to claim 1, characterized in that The bottom surface of the movable shell (42) is provided with an arc-shaped protrusion (46), the cross section of the protrusion (46) is T-shaped, and the bottom pad (10) is provided with a groove (11) corresponding to the arc-shaped protrusion (46).

7. The gas sensor device according to claim 1, characterized in that The lower end surface of the gas sensor body (20) is provided with a pin (21), and the base pad (10) is provided with a third through hole (12) corresponding to the pin (21).

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