A gas sensor with a protective structure

Abstract

This invention relates to the field of gas sensor technology, and in particular to a gas sensor with a protective structure, comprising: a protective cover for connection to a wall; a sensor body mounted on the protective cover for gas detection; wherein at least two snap-fit ​​components are provided on the end face of the protective cover, the two snap-fit ​​components being used to connect and adapt to two mounting holes of the sensor body; a carrier plate is also provided below the protective cover, and a filter element is embedded in the carrier plate. This invention, through the structural design of the protective cover, can achieve shielding and protection of the sensor body, thereby improving its stability in harsh environments. Simultaneously, the snap-fit ​​components between the protective cover and the sensor body enable quick disassembly and installation of the sensor body without the need for external tools and bolts, making operation simpler.

Description

Technical Field

[0001] This invention relates to the field of gas sensor technology, and more particularly to a gas sensor with a protective structure. Background Technology

[0002] A gas sensor is a converter that transforms the volume fraction of a gas into a corresponding electrical signal. The probe conditiones the gas sample through the gas sensor, which typically includes filtering out impurities and interfering gases, drying or cooling the sample, and displaying the sample. The impurity filtering section is usually designed with a movable dust cover.

[0003] In existing technologies, most gas sensors are fixed to the wall by mounting holes on their mounting feet and bolts or expansion bolts. After fixing, it is difficult to quickly disassemble and repair the gas sensor, making subsequent maintenance extremely inconvenient. Secondly, due to the lack of overall protection for the sensor body, its weather resistance is poor in harsh environments. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by proposing a gas sensor with a protective structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a gas sensor with a protective structure, including:

[0007] A protective cover for connection to the wall;

[0008] The sensor body is mounted on the protective cover and is used for gas detection;

[0009] At least two snap-fit ​​components are provided on the end face of the protective cover, and the two snap-fit ​​components are used to connect and adapt to the two mounting holes of the sensor body;

[0010] Below the protective cover, there is a carrier plate, in which a filter element is embedded, and the filter element is located directly below the detection end of the sensor body.

[0011] Furthermore, the protective cover includes a U-shaped plate, with a mounting wing provided at each of the two free ends of the U-shaped plate, and a water-blocking canopy is also installed at the top of the U-shaped plate. The sensor body is installed on the front end surface of the U-shaped plate.

[0012] Furthermore, the snap-fit ​​assembly includes a plug rod fixed to the protective cover, the plug rod being located in the bent inner cavity of the U-shaped plate, a sleeve being fitted on the outer side of the plug rod, and an annular platform being installed on the outer circumferential surface of the sleeve, the annular platform being used to stop the mounting feet of the sensor body;

[0013] A spring is installed between the sleeve and the protective cover, and a locking component is provided between the insertion rod and the sleeve.

[0014] Furthermore, the locking assembly includes at least one elastic clip installed on the outside of the insertion rod. A groove is formed on the outer peripheral surface of the insertion rod, the elastic clip is located in the groove, and can deform and contract in the groove so that when the mounting feet of the sensor body move to a predetermined distance against the sleeve, the elastic clip pops out to stop the mounting feet of the sensor body.

[0015] Furthermore, a heat dissipation groove is provided on the end face of the U-shaped plate, and a guide post is installed on the top of the U-shaped plate, which can be inserted into the upper mounting pin of the sensor body.

[0016] Furthermore, the carrier plate is movably connected to the U-shaped plate via a U-shaped frame, and a locking mechanism for locking the position of the carrier plate is provided at the back end of the U-shaped plate.

[0017] Furthermore, the locking mechanism includes a fixed plate, and an annular groove is formed on the end face of the fixed plate. The annular groove has a first locking position and a second locking position. A connecting rod is pinned to the top of the U-shaped frame. The free end of the connecting rod is slidably connected to the annular groove and can reciprocate along the first locking position and the second locking position.

[0018] The back end of the U-shaped plate is also provided with a driving component for driving the U-shaped frame to move up and down.

[0019] Furthermore, the driving component includes an L-shaped plate rotatably connected to the inner cavity of the U-shaped plate via a mounting base and a torsion spring. A pusher is provided at the tail end of at least one of the sleeves. The L-shaped plate and the pusher are initially separated by a preset distance. A lever is also provided on the inner side of the U-shaped frame so that when the pusher pushes the L-shaped plate to rotate, the bottom of the L-shaped plate can abut against the lever and move upward.

[0020] Furthermore, a protrusion is provided on the mounting wing, and a wave groove is formed on the protrusion from top to bottom. A cleaning rod is also pinned to the bottom of the carrier plate. An elastic telescopic rod is fixedly installed at one end of the cleaning rod near the protrusion. The free end of the elastic telescopic rod is slidably connected to the wave groove, and the upper surface of the cleaning rod can contact the filter element.

[0021] Furthermore, the filter element is a filter screen plate, and a threaded hole is specifically formed on the end face of the carrier plate, and the filter screen plate is threadedly connected to the threaded hole.

[0022] The gas sensor with a protective structure proposed in this invention has the following advantages:

[0023] The present invention employs a protective cover structure design to shield and protect the sensor body, thereby improving its stability in harsh environments. At the same time, a snap-fit ​​component is provided between the protective cover and the sensor body, which enables quick disassembly and installation of the sensor body without the need for external tools and bolts, making the operation simpler.

[0024] Secondly, the present invention adopts a structural design of mounting the filter on a carrier plate to prevent dust from entering the sensor body at the air intake detection end. There is no need to install a dustproof cover on the detection port of the sensor body, thus saving the manufacturing cost and assembly efficiency of the entire sensor body and making it more reusable. Attached Figure Description

[0025] Figure 1 The three-dimensional representation of the present invention Figure 1 ;

[0026] Figure 2 for Figure 1 The left view;

[0027] Figure 3 This is a schematic diagram of the elastic card structure of the present invention;

[0028] Figure 4 The three-dimensional representation of the present invention Figure 2 ;

[0029] Figure 5 for Figure 4 A magnified structural diagram of area A;

[0030] Figure 6 This is a diagram showing the state when the protective cover is separated from the sensor body;

[0031] Figure 7 The protective cover of the present invention is three-dimensional. Figure 1 ;

[0032] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of region B;

[0033] Figure 9 The protective cover of the present invention is three-dimensional. Figure 2 .

[0034] In the diagram: 1. Protective cover; 11. Guide post; 12. Protrusion; 13. Wave groove; 14. Cleaning rod; 15. Elastic telescopic rod; 2. Sensor body; 3. Snap-fit ​​assembly; 31. Insert rod; 32. Sleeve; 33. Ring platform; 34. Spring; 35. Elastic clip; 4. Carrier plate; 41. U-shaped frame; 42. Fixing plate; 43. Annular slot; 44. Connecting rod; 45. L-shaped plate; 46. Push plate; 47. Toggle rod; 5. Filter element. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Reference Figure 1-2 A gas sensor with a protective structure, comprising:

[0037] A protective cover 1 is used to connect to the wall. Specifically, in the embodiment of the present invention, the protective cover 1 includes a U-shaped plate, and a mounting wing is provided on both free ends of the U-shaped plate. Several mounting and fixing holes are opened on the end face of the mounting wing. A water-blocking canopy is also installed at the top of the U-shaped plate. The water-blocking canopy has a plate-shaped structure with both ends bent.

[0038] In this embodiment, the protective cover 1 is made entirely of stainless steel sheet to improve its durability;

[0039] It also includes a sensor body 2, which is installed on the protective cover 1 for gas detection. The sensor body 2 is installed on the front end face of the U-shaped plate. Specifically, the sensor body 2 should also be installed below the water barrier to achieve dust and water protection. In addition, in the embodiment of the invention, the internal control unit of the sensor body 2 can achieve remote communication through a wireless module. Preferably, the wireless module adopts an LOR communication module to achieve a wire-free and long-distance communication method, thereby facilitating users to remotely view the current gas detection data.

[0040] Reference Figure 1 , 9 At least two snap-fit ​​components 3 are provided on the end face of the protective cover 1, and the two snap-fit ​​components 3 are used to connect and adapt to the two mounting holes of the sensor body 2.

[0041] Reference Figure 3 , 7Below the protective cover 1, a carrier plate 4 is also provided. In this embodiment of the invention, an arc-shaped baffle is provided at the end of the carrier plate. The function of the arc-shaped baffle is to connect and fit with the detection end of the sensor body 2 to achieve rigid protection of the air inlet of the sensor body 2. A filter element 5 is embedded in the carrier plate 4. The filter element 5 is located directly below the detection end of the sensor body 2. By adopting the design of the filter element 5, there is no need to install a protective shell on the sensor body 2. While reducing the number of parts of the sensor body 2, the dustproof requirements can also be guaranteed to ensure the accuracy of gas sensor data detection.

[0042] Specifically, in this embodiment of the invention, the filter element 5 is a filter screen plate, and a threaded hole is specifically formed on the end face of the carrier plate 4. The filter screen plate is threaded into the threaded hole. The above-mentioned threaded connection method can facilitate the installation and disassembly of the filter screen plate, so as to facilitate its replacement.

[0043] In other embodiments, the filter screen can also be fixed to the carrier plate 4 using a snap-fit ​​structure. This method is existing technology and will not be described in detail here.

[0044] Reference Figure 3-5 Furthermore, in this embodiment of the invention, the snap-fit ​​assembly 3 includes a plug rod 31 fixed to the protective cover 1. The plug rod 31 is located in the bent inner cavity of the U-shaped plate. A sleeve 32 is sleeved on the outer side of the plug rod 31. An annular platform 33 is also installed on the outer circumferential surface of the sleeve 32. In this embodiment of the invention, the distance between the annular platform 33 and the end of the sleeve 32 is the same as the thickness of the mounting feet of the sensor body 2, so as to ensure that the sensor body 2 can be tightly fixed after the locking assembly is locked. The annular platform 33 is used to stop the mounting feet of the sensor body 2. Specifically, the mounting holes are opened on the mounting feet, and each mounting foot has at least one corresponding mounting hole.

[0045] A spring 34 is installed between the sleeve 32 and the protective cover 1, and a locking component is provided between the insertion rod 31 and the sleeve 32.

[0046] Reference Figure 6 In addition, considering that the current gas sensor has a mounting foot on top, a guide post 11 is also installed on the top of the U-shaped plate in this invention. The guide post 11 can be inserted into the mounting foot on the upper part of the sensor body 2. The guide post 11 fits tightly with the above-mentioned mounting hole to ensure stability after installation.

[0047] In summary, in the embodiments of the invention, the specific installation process of the sensor body 2 described above is as follows:

[0048] The user holds the sensor body 2 and aligns the mounting holes of the two mounting feet at the bottom of the sensor body 2 with the two sleeves 32 for insertion. The mounting hole at the top is inserted into the guide post 11. A certain pushing force is applied to the sensor body 2. Under the stop of the ring platform 33, the entire sleeve 32 moves inward until the locking component locks the position of the sleeve 32.

[0049] Reference Figure 3 For example, in this embodiment of the invention, the locking component includes at least one elastic clip 35 installed on the outside of the insertion rod 31. A groove is formed on the outer peripheral surface of the insertion rod 31, the elastic clip 35 is located in the groove, and can deform and contract in the groove so that when the mounting feet of the sensor body 2 move to a predetermined distance against the sleeve 32, the elastic clip 35 pops out to stop the mounting feet of the sensor body 2.

[0050] Specifically, in this embodiment, when the sleeve 32 moves inward, the elastic clip 35 on the outside of the insertion rod 31 pops out, thereby stopping the mounting feet of the sleeve 32 and the sensor body 2 to lock the position. Similarly, when it is necessary to disassemble the sensor body 2, simply press the elastic clip 35 inward to make it retract into the groove, and the sensor body 2 can be taken out outward.

[0051] Reference Figure 6 It should be noted that, considering the heat dissipation problem of the gas sensor in this invention, a heat dissipation groove is also provided on the end face of the U-shaped plate. The heat dissipation groove consists of several spaced slots. The use of the heat dissipation groove design in this embodiment of the invention can ensure the working environment of the gas sensor and improve its weather resistance. The specific heat dissipation principle is as follows:

[0052] Because the U-shaped plate structure of the protective cover 1 is at a predetermined distance from the wall, it facilitates airflow. At the same time, since the elastic clip 35 is fixed to the sleeve 32, there is also a distance between the sensor body 2 and the protective cover 1. Therefore, when the sensor body 2 generates heat, the heat can be discharged outward through the bent inner cavity of the U-shaped plate and the gap between the sensor body 2 and the U-shaped plate. The structure is simple and practical.

[0053] Based on the above embodiments, in this invention, the carrier plate 4 is movably connected to the U-shaped plate via a U-shaped frame 41, and a locking mechanism for locking the position of the carrier plate 4 is provided at the back end of the U-shaped plate.

[0054] Reference Figure 5Furthermore, the locking mechanism includes a fixed plate 42, and an annular groove 43 is formed on the end face of the fixed plate 42. Of course, in order to prevent the connecting rod 44 from reversing, a series of stepped structures should also be provided in the annular groove 43. This structure is existing technology and will not be described in detail here. The annular groove 43 has a first locking position and a second locking position. A connecting rod 44 is pinned to the top of the U-shaped frame 41. The free end of the connecting rod 44 is slidably connected to the annular groove 43 and can reciprocate along the first locking position and the second locking position.

[0055] The back end of the U-shaped plate is also provided with a driving component for driving the U-shaped frame 41 to move up and down.

[0056] Specifically, in the initial state, the end of the connecting rod 44 is engaged in the first locking position. When the U-shaped frame 41 moves upward, the connecting rod 44 moves up and down and rotates to the second locking position. At this time, the upward position of the U-shaped frame 41 is fixed, so that the carrier plate 4 drives the filter element 5 to move upward, so as to achieve contact with the air intake detection end of the sensor body 2, thereby achieving the filtration of impurities.

[0057] Furthermore, when the above steps are repeated, due to the characteristics of the annular groove 43, the connecting rod 44 slides back to the first slot along the second slot. At this time, the U-shaped frame 41 drives the carrier plate 4 to move down, and there is a certain distance between the filter element 5 and the sensor body 2, so it is convenient to replace and repair the filter element 5.

[0058] Reference Figure 5 Furthermore, in this embodiment of the invention, the driving component includes an L-shaped plate 45 rotatably connected to the inner cavity of the U-shaped plate via a mounting base and a torsion spring. A pusher 46 is provided at the tail end of at least one of the sleeves 32. In this embodiment of the invention, the pusher 46 is fixedly installed between the tail ends of two sleeves 32 to form an integral structure.

[0059] The L-shaped plate 45 and the push plate 46 are initially separated by a preset distance. Based on the above embodiment, this preset distance should be at least the length required for the pop-out of the elastic card 35. That is, when the elastic card 35 pops out, the L-shaped plate 45 is not in contact with the push plate 46. Subsequently, when the sensor body 2 is pushed further, the push plate 46 pushes the L-shaped plate 45 to rotate, thereby pushing the U-shaped frame 41 to move upward.

[0060] Reference Figure 5In addition, a lever 47 is provided on the inner side of the U-shaped frame 41 so that when the push plate 46 pushes the L-shaped plate 45 to rotate, the bottom of the L-shaped plate 45 can abut against the lever 47 and move upward. Specifically, in this embodiment of the invention, in order to reduce the frictional force of the contact, a roller is embedded in the top of the L-shaped plate 45. The roller is used to contact the push plate 46. Similarly, a roller or bearing can also be provided on the outer side of the lever 47 to reduce the frictional force of the L-shaped plate 45 contacting it.

[0061] Reference Figure 7 , 8 Furthermore, considering the cleaning effect on the filter element 5, in this embodiment of the invention, a protrusion 12 is provided on the mounting wing, and a wave groove 13 is provided on the protrusion 12 from top to bottom. In this embodiment, the groove opening of the wave groove 13 is semi-circular. A cleaning rod 14 is also pinned to the bottom of the carrier plate 4. The cleaning rod 14 can adopt a plate plus brush structure design to achieve cleaning of the filter element 5.

[0062] A flexible telescopic rod 15 is fixedly installed at one end of the cleaning rod 14 near the protrusion 12. The flexible telescopic rod 15 is composed of a spring and a telescopic rod. This method is existing technology and will not be described in detail here. Specifically, in order to adapt to the above-mentioned wave groove 13, a spherical protrusion can also be provided at the end of the flexible telescopic rod 15. The spherical protrusion slides and swings along the wave groove 13 to drive the cleaning rod 14 to swing. The free end of the flexible telescopic rod 15 is slidably connected to the wave groove 13, and the upper surface of the cleaning rod 14 can contact the filter element 5.

[0063] In other words, when the carrier plate 4 of the present invention is operated up and down, the cleaning rod 14 can automatically clean the filter element 5. At the same time, due to the limiting design of the elastic clip 35, the sensor body 2 will not fall off. Therefore, when the user does not want to disassemble the filter element 5 for cleaning, the sensor body 2 can be pressed repeatedly several times to realize the up and down reciprocating movement of the carrier plate 4, thereby realizing the automatic cleaning of the filter element 5 and achieving a convenient operation effect. The overall design is quite novel.

[0064] In summary, the present invention, by adopting the structural design of the protective cover 1, can achieve shielding and protection of the sensor body 2, thereby improving its stability in harsh environments. At the same time, the snap-fit ​​component 3 is provided between the protective cover 1 and the sensor body 2, so that the sensor body 2 can be quickly disassembled and installed without the need for external tools and bolts, making the operation simpler.

[0065] Secondly, the structural design of mounting the filter element 5 on the carrier plate 4 in this invention can prevent dust from entering the air intake detection end of the sensor body 2. There is no need to install a dustproof cover on the detection port of the sensor body 2, thus saving the manufacturing cost and assembly efficiency of the entire sensor body 2, and making it more reusable.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gas sensor having a protective structure, characterized by, include: A protective cover for connection to the wall; The sensor body is mounted on the protective cover and is used for gas detection; At least two snap-fit ​​components are provided on the end face of the protective cover, and the two snap-fit ​​components are used to connect and adapt to the two mounting holes of the sensor body; Below the protective cover, a carrier plate is provided, and a filter element is embedded in the carrier plate. The filter element is located directly below the detection end of the sensor body. The protective cover includes a U-shaped plate, and a mounting wing is provided on each of the two free ends of the U-shaped plate. A water-blocking canopy is also installed at the top of the U-shaped plate. The sensor body is installed on the front end face of the U-shaped plate. The snap-fit ​​assembly includes a plug rod fixed to the protective cover. The plug rod is located in the bent inner cavity of the U-shaped plate. A sleeve is sleeved on the outside of the plug rod. An annular platform is also installed on the outer circumference of the sleeve. The annular platform is used to stop the mounting feet of the sensor body. A spring is installed between the sleeve and the protective cover, and a locking assembly is provided between the insertion rod and the sleeve. The carrier plate is movably inserted into the U-shaped plate via a U-shaped frame. A locking mechanism for locking the position of the carrier plate is provided at the back end of the U-shaped plate. The locking mechanism includes a fixed plate, and an annular groove is formed on the end face of the fixed plate. The annular groove has a first locking position and a second locking position. A connecting rod is pinned to the top of the U-shaped frame. The free end of the connecting rod is slidably connected in the annular groove and can reciprocate along the first locking position and the second locking position. The U-shaped plate has a drive component at its back end for moving the U-shaped frame up and down. The drive component includes an L-shaped plate rotatably connected to the inner cavity of the U-shaped plate via a mounting base and a torsion spring. A pusher is provided at the tail end of at least one sleeve. The L-shaped plate and the pusher are initially separated by a preset distance. A lever is provided on the inner side of the U-shaped frame so that when the pusher pushes the L-shaped plate to rotate, the bottom of the L-shaped plate can abut against the lever and move upward. A protrusion is provided on the mounting wing, and a wave groove is formed on the protrusion from top to bottom. A cleaning rod is pinned to the bottom of the carrier plate. An elastic telescopic rod is fixedly installed at one end of the cleaning rod near the protrusion. The free end of the elastic telescopic rod is slidably connected in the wave groove. The upper surface of the cleaning rod can contact the filter element.

2. A gas sensor with a protective structure according to claim 1, characterized in that: The locking assembly includes at least one elastic clip installed on the outside of the insertion rod. A groove is formed on the outer peripheral surface of the insertion rod, the elastic clip is located in the groove, and can deform and contract in the groove so that when the mounting feet of the sensor body move to a predetermined distance against the sleeve, the elastic clip pops out to stop the mounting feet of the sensor body.

3. A gas sensor with a protective structure according to claim 1, characterized in that: A heat dissipation groove is provided on the end face of the U-shaped plate, and a guide post is installed on the top of the U-shaped plate. The guide post can be inserted into the upper mounting pin of the sensor body.

4. A gas sensor with a protective structure according to any one of claims 1-3, characterized in that: The filter element is a filter screen plate, and a threaded hole is specifically formed on the end face of the carrier plate. The filter screen plate is threaded into the threaded hole.

Images