Shell structure and gas sensor

Abstract

The utility model relates to the technical field of welding production and processing, and discloses a shell structure and a gas sensor, and the shell structure comprises a first shell, a second shell and a third shell, the fixing structure comprises a first fixing part and a second fixing part, the first fixing part comprises a fixing circular plate fixedly installed at the bottom of the first shell, two sets of supporting plates are fixedly installed at the bottom of the fixing circular plate, limiting hole plates are fixedly installed in the supporting plates, and nails are arranged in the limiting hole plates; and the second fixing part comprises a second fixing circular plate fixedly installed at the bottom of the inner side of the first shell, three sets of first threaded grooves are formed in the second fixing circular plate, a third fixing circular plate is arranged in the first shell, three sets of third threaded sleeves are fixedly installed in the third fixing circular plate, and the purpose of quickly disassembling and installing the shells is achieved. The mounting efficiency of the shell is improved, the device can be conveniently disassembled and overhauled, and the use convenience of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of welding production and processing technology, specifically, it relates to a housing structure and a gas sensor. Background Technology

[0002] During welding production, high-temperature electric arcs or flames generate large amounts of harmful gases. Long-term exposure can endanger the health of operators and may lead to fire or explosion risks. Existing gas sensors have the following shortcomings: the sensor housing is easily damaged by welding spatter and high-temperature radiation; the traditional structure results in a long gas diffusion path, leading to delayed detection; and sensor replacement or calibration requires disassembling the equipment, affecting production efficiency.

[0003] Utility model patent CN220525780U relates to the field of gas sensor packaging technology, specifically a shock-resistant gas sensor packaging structure. The structure includes a housing with a rotatable cover and a placement tray inside. It also includes a limiting mechanism disposed on the housing, which, in conjunction with the placement tray, places and positions the gas sensor; and a spring-loaded mechanism disposed on the limiting mechanism, which controls the limiting mechanism to release the gas sensor from its position. This shock-resistant gas sensor packaging structure differs from existing technologies. When using it, operators simply place the gas sensor using the limiting mechanism in conjunction with the placement tray, and then use the spring-loaded mechanism to control the limiting mechanism to release the gas sensor from its position. The overall process is simple and convenient for installing and removing the gas sensor.

[0004] However, the aforementioned patent still has the following problems: As a key component of the packaging structure, the spring-loaded structure is susceptible to metal fatigue after prolonged use. Damage to the spring-loaded structure components will affect the overall device's ability to secure the gas sensor, making the sensor prone to displacement during welding processes under vibration and impact, and even collisions with the packaging structure, resulting in sensor damage. This not only increases equipment maintenance costs but may also affect the safety and stability of welding production. In practical use, workers may need to frequently change the gas sensor at different welding stations or on different equipment, thus placing high demands on the quick-release installation performance of the packaging structure.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the technical problem of poor fixing effect of the aforementioned device, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A shell structure, comprising:

[0008] The first shell is cylindrical;

[0009] The fixing structure includes a first fixing part and a second fixing part. The first fixing part includes a fixing circular plate fixedly installed at the bottom of the first housing. Two sets of support plates are fixedly installed at the bottom of the fixing circular plate. Limiting hole plates are fixedly installed inside the support plates. Nails are provided inside the limiting hole plates. The second fixing part includes a second fixing circular plate fixedly installed on the inner bottom of the first housing. Three sets of first threaded grooves are opened inside the second fixing circular plate. A third fixing circular plate is provided inside the first housing. Three sets of third threaded sleeves are fixedly installed inside the third fixing circular plate. First limiting bolts are provided inside the third threaded sleeves and the first threaded grooves. The first limiting bolts are screwed into the third threaded sleeves and the first threaded grooves.

[0010] In a preferred embodiment of the present invention, the second fixing part further includes a first snap-fit ​​groove opened inside the third fixing circular plate. The bottom of the first snap-fit ​​groove is provided with four sets of second threaded grooves. A first snap-fit ​​plate is snap-fitted and installed inside the first snap-fit ​​groove. The first snap-fit ​​plate is provided with four sets of third threaded grooves inside. A second limiting bolt is provided inside the third threaded groove. The second limiting bolt is spirally installed inside the third threaded groove and the second threaded groove.

[0011] In a preferred embodiment of the present invention, a second threaded sleeve is fixedly installed on the top of the first housing, a sealing cover is provided on the top of the first housing, and a first threaded sleeve is provided inside the sealing cover. The first threaded sleeve is screwed onto the outside of the second threaded sleeve.

[0012] In a preferred embodiment of the present invention, three sets of openings are provided on the outer wall of the first housing, and a first air inlet pipe, a first air outlet pipe and a second air inlet pipe are respectively fixedly installed in the three sets of openings.

[0013] In a preferred embodiment of this utility model, the top of the second fixed circular plate is in close contact with the bottom of the third fixed circular plate.

[0014] In a preferred embodiment of this utility model, the top of the sealing cover is provided with an opening, and an explosion-proof glass plate is fixedly installed inside the opening.

[0015] A gas sensor includes a housing structure and a gas sensor as described in any one of the above claims. An inlet and an outlet are fixedly installed on the outer wall of the gas sensor. A first gas delivery pipe is disposed inside the inlet, a second gas delivery pipe is disposed inside the outlet, and a third gas delivery pipe is fixedly installed on one side of the outer wall of the gas sensor. The first gas delivery pipe is disposed inside the first inlet pipe, the second gas delivery pipe is disposed inside the first outlet pipe, and the third gas delivery pipe is disposed inside the second inlet pipe.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. To achieve quick disassembly and installation of the housing, improve the installation efficiency of the housing, facilitate the disassembly and maintenance of the device, and enhance the ease of use of the device.

[0018] 2. To achieve the purpose of sealing the device and transporting gas, improve the sealing effect of the device, ensure the stability of the device in use, improve the safety of the device, and improve the accuracy of gas detection data.

[0019] 3. To achieve the purpose of gas transportation and detection, improve gas detection efficiency, simplify the operation steps of the device, and optimize the user experience of the device.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the disassembled support plate and nails of this utility model;

[0024] Figure 3 This is a schematic diagram of the second threaded sleeve structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the first threaded sleeve structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the second fixed circular plate structure of this utility model;

[0027] Figure 6 This is a schematic diagram showing the disassembled third fixing circular plate and the first limiting bolt of this utility model;

[0028] Figure 7 This is a schematic diagram showing the first snap-fit ​​groove and the first snap-fit ​​plate of this utility model.

[0029] In the diagram: 10. First housing; 11. Fixed circular plate; 12. Support plate; 13. Limiting hole plate; 14. Nail; 15. First air inlet pipe; 16. First air outlet pipe; 17. Second air inlet pipe; 18. Sealing cap; 19. First threaded sleeve; 20. Explosion-proof glass plate; 21. Second threaded sleeve; 22. Second fixed circular plate; 23. First threaded groove; 24. Third fixed circular plate; 25. Third threaded sleeve; 26. First limiting bolt; 27. First air supply pipe; 28. Second air supply pipe; 29. ​​Third air supply pipe; 30. First snap-fit ​​groove; 31. Second threaded groove; 32. First snap-fit ​​plate; 33. Third threaded groove; 34. Second limiting bolt; 35. Gas sensor; 36. Air inlet; 37. Air outlet. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0031] Example 1: A housing structure and a gas sensor, specifically as follows Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the device includes a first housing 10, which is cylindrical; a fixing structure, which includes a first fixing part and a second fixing part. The first fixing part includes a fixing circular plate 11 fixedly installed at the bottom of the first housing 10. Two sets of support plates 12 are fixedly installed at the bottom of the fixing circular plate 11. Limiting hole plates 13 are fixedly installed inside the support plates 12. Nails 14 are provided inside the limiting hole plates 13. The second fixing part includes a second fixing circular plate 22 fixedly installed on the inner bottom of the first housing 10. Three sets of first threaded grooves 23 are opened inside the second fixing circular plate 22. A third fixing circular plate 24 is provided inside the first housing 10. Three sets of third threaded sleeves 25 are fixedly installed inside the third fixing circular plate 24. A first limiting bolt 26 is provided inside the third threaded sleeve 25. The first limiting bolt 26 is screwed into the third threaded sleeve 25 and the first threaded groove 23. The shell structure is connected and installed by fixing the structure. The bottom of the support plate 12 is pressed tightly against the table surface. The nail 14 is hammered into the limiting hole plate 13 and the inside of the table surface. The support plate 12 is installed on the table surface. The third fixing round plate 24 is placed on top of the second fixing round plate 22. The first limiting bolt 26 is rotated and the first limiting bolt 26 is screwed into the inside of the third threaded sleeve 25 and the first threaded groove 23 in sequence.

[0032] Specifically, such as Figure 6 and Figure 7As shown, the second fixing part also includes a first snap-fit ​​groove 30 opened inside the third fixing circular plate 24. The bottom of the first snap-fit ​​groove 30 has four sets of second threaded grooves 31. A first snap-fit ​​plate 32 is snap-fitted into the inside of the first snap-fit ​​groove 30. The inside of the first snap-fit ​​plate 32 has four sets of third threaded grooves 33. A second limiting bolt 34 is disposed inside the third threaded groove 33. The second limiting bolt 34 is screwed into the third threaded groove 33 and the second threaded groove 31. The first snap-fit ​​plate 32 is snap-fitted into the inside of the first snap-fit ​​groove 30, and the second limiting bolt 34 is rotated to screw the second limiting bolt 34 into the third threaded groove 33 and the second threaded groove 31 in sequence.

[0033] Based on the above, the structure of the first housing 10, the fixed circular plate 11, the support plate 12, the limiting hole plate 13, the nail 14, the second fixed circular plate 22, the first threaded groove 23, the third fixed circular plate 24, the third threaded sleeve 25, the first snap-fit ​​groove 30, the second threaded groove 31, the first snap-fit ​​plate 32, the third threaded groove 33, and the second limiting bolt 34 achieves the purpose of quick disassembly and installation of the housing, improves the installation efficiency of the housing, facilitates the disassembly and maintenance of the device, and improves the convenience of using the device.

[0034] Example 2: Based on Example 1, specifically as follows... Figure 3 and Figure 4 As shown, a second threaded sleeve 21 is fixedly installed on the top of the first housing 10. A sealing cover 18 is provided on the top of the first housing 10. A first threaded sleeve 19 is provided inside the sealing cover 18. The first threaded sleeve 19 is screwed onto the outside of the second threaded sleeve 21. By rotating the sealing cover 18, the first threaded sleeve 19 is screwed onto the outer wall of the second threaded sleeve 21, thus sealing the top of the first housing 10 through the sealing cover 18.

[0035] Specifically, such as Figure 6 As shown, three sets of openings are provided on the outer wall of the first housing 10, and a first air inlet pipe 15, a first air outlet pipe 16, and a second air inlet pipe 17 are respectively fixedly installed in the three sets of openings. Gas is input and output through the first air inlet pipe 15, the first air outlet pipe 16, and the second air inlet pipe 17.

[0036] Specifically, such as Figure 3 As shown, the top of the second fixed circular plate 22 is in close contact with the bottom of the third fixed circular plate 24.

[0037] Specifically, such as Figure 1 and Figure 4 As shown, the top of the sealing cover 18 has an opening, and an explosion-proof glass plate 20 is fixedly installed inside the opening. The gas sensor can be observed through the explosion-proof glass plate 20.

[0038] Based on the above, the structure of the first inlet pipe 15, the first outlet pipe 16, the second inlet pipe 17, the sealing cover 18, the first threaded sleeve 19, the explosion-proof glass plate 20, the second threaded sleeve 21, the second fixed circular plate 22, and the third fixed circular plate 24 achieves the purpose of sealing the device and transporting gas, improving the sealing effect of the device, ensuring the stability of the device's use, improving the safety of the device, and improving the accuracy of gas detection data.

[0039] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 , Figure 6 and Figure 7 As shown, a gas sensor includes a housing structure as described above and a gas sensor 35. An inlet 36 and an outlet 37 are fixedly mounted on the outer wall of the gas sensor 35. A first gas delivery pipe 27 is disposed inside the inlet 36, and a second gas delivery pipe 28 is disposed inside the outlet 37. A third gas delivery pipe 29 is fixedly mounted on one side of the outer wall of the gas sensor 35. The first gas delivery pipe 27 is disposed inside the first inlet pipe 15, the second gas delivery pipe 28 is disposed inside the first outlet pipe 16, and the third gas delivery pipe 29 is disposed inside the second inlet pipe 17. Gas is input and output through the inlet 36 and outlet 37, and the gas is detected by the gas sensor 35. The gas sensor 35, based on semiconductor / electrochemical / optical sensor technology, achieves gas concentration detection through the chemical reaction, physical adsorption, or optical property changes between the sensitive material and target gas molecules. It has a built-in weak signal amplification circuit to improve detection accuracy, and an analog-to-digital converter converts the analog signal into a digital signal, supporting I / O. 2 Interfaces such as C, SPI, or UART are used to achieve data interaction with the main control system. These are existing technologies and will not be elaborated further.

[0040] In summary, the structure of the first gas supply pipe 27, the third gas supply pipe 29, the gas sensor 35, the inlet 36, and the outlet 37 achieves the purpose of gas delivery and detection, improves gas detection efficiency, simplifies the operation steps of the device, and optimizes the user experience.

[0041] Working principle: The fixed circular plate 11 is fixedly installed at the bottom of the first housing 10. Two sets of support plates 12 are installed at the bottom of the first housing 10. The support plates 12 have limiting holes 13 inside, and nails 14 are pre-placed in the limiting holes 13. During installation, the bottom of the support plate 12 is in close contact with the table surface. By hammering the nails 14, they are embedded into the limiting holes 13 and the table surface, thus fixing the housing to the table surface. The second fixed circular plate 22 is fixed to the bottom inner side of the first housing 10. It has three sets of first threaded grooves 23 inside. The third fixed circular plate 24 is placed on top of the second fixed circular plate 22. It has three sets of third threaded sleeves 25 inside. Bolt 26 is screwed sequentially onto the third threaded sleeve 25 and the first threaded groove 23 to achieve a tight connection between the second fixed circular plate 22 and the third fixed circular plate 24. The third fixed circular plate 24 has a first snap-fit ​​groove 30 inside, with four sets of second threaded grooves 31 at the bottom. The first snap-fit ​​plate 32 snaps into the first snap-fit ​​groove 30 and has four sets of third threaded grooves 33 inside. The second limit bolt 34 is screwed sequentially onto the third threaded groove 33 and the second threaded groove 31 to fix the first snap-fit ​​plate 32 and the third fixed circular plate 24. The top of the first housing 10 has a second threaded sleeve 21, and the sealing cover 18 has a first threaded sleeve 25 inside. A threaded sleeve 19 and a rotating sealing cap 18 are used to screw the first threaded sleeve 19 onto the outside of the second threaded sleeve 21, achieving a seal at the top of the housing. An explosion-proof glass plate 20 is provided on the top of the sealing cap 18 for observing the status of the gas sensor 35. Three sets of openings are formed on the outer wall of the first housing 10, respectively housing the first inlet pipe 15, the first outlet pipe 16, and the second inlet pipe 17. The first inlet pipe 15, the first outlet pipe 16, and the second inlet pipe 17 are connected to the gas sensor 35's inlet 36, outlet 37, and third gas delivery pipe 29 via the first gas delivery pipe 27 and the second gas delivery pipe 28. The gas sensor 35 is fixedly installed inside the housing to realize the input and output of gas. It receives and discharges gas through the inlet 36 and outlet 37. The gas enters the gas sensor 35 through the first inlet pipe 15 and the first gas delivery pipe 27. After detection, it is discharged through the second gas delivery pipe 28 and the first outlet pipe 16. Some gas can circulate inside the housing through the second inlet pipe 17 and the third gas delivery pipe 29 to realize gas monitoring in specific environments. The detection accuracy and stability of the gas sensor 35 are optimized through internal circuits and algorithms to ensure accurate operation in harsh environments such as high temperature and high humidity.

[0042] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A shell structure, characterized in that, include: The first housing (10) is cylindrical; The fixing structure includes a first fixing part and a second fixing part. The first fixing part includes a fixing circular plate (11) fixedly installed at the bottom of the first housing (10). Two sets of support plates (12) are fixedly installed at the bottom of the fixing circular plate (11). A limiting hole plate (13) is fixedly installed inside the support plate (12). A nail (14) is provided inside the limiting hole plate (13). The second fixing part includes a second fixing circular plate (22) fixedly installed on the bottom inner side of the first housing (10). Three sets of first threaded grooves (23) are opened inside the second fixing circular plate (22). A third fixing circular plate (24) is provided inside the first housing (10). Three sets of third threaded sleeves (25) are fixedly installed inside the third fixing circular plate (24). A first limiting bolt (26) is provided inside the third threaded sleeve (25). The first limiting bolt (26) is screwed into the third threaded sleeve (25) and the first threaded groove (23).

2. The shell structure according to claim 1, characterized in that, The second fixing part also includes a first snap-fit ​​groove (30) opened inside the third fixing circular plate (24). The bottom of the first snap-fit ​​groove (30) is provided with four sets of second threaded grooves (31). A first snap-fit ​​plate (32) is snap-fitted inside the first snap-fit ​​groove (30). The first snap-fit ​​plate (32) is provided with four sets of third threaded grooves (33). A second limiting bolt (34) is provided inside the third threaded groove (33). The second limiting bolt (34) is screwed inside the third threaded groove (33) and the second threaded groove (31).

3. The shell structure according to claim 1, characterized in that, A second threaded sleeve (21) is fixedly installed on the top of the first housing (10). A sealing cover (18) is provided on the top of the first housing (10). A first threaded sleeve (19) is provided inside the sealing cover (18). The first threaded sleeve (19) is screwed onto the outside of the second threaded sleeve (21).

4. The shell structure according to claim 1, characterized in that, The outer wall of the first housing (10) has three sets of openings, and the first air inlet pipe (15), the first air outlet pipe (16), and the second air inlet pipe (17) are fixedly installed in the three sets of openings respectively.

5. The shell structure according to claim 1, characterized in that, The top of the second fixed circular plate (22) is in close contact with the bottom of the third fixed circular plate (24).

6. The shell structure according to claim 3, characterized in that, The top of the sealing cover (18) has an opening, and an explosion-proof glass plate (20) is fixedly installed inside the opening.

7. A gas sensor, characterized in that, The gas sensor (35) includes the housing structure and gas sensor (35) as described in any one of claims 1-6. An air inlet (36) and an air outlet (37) are fixedly installed on the outer wall of the gas sensor (35). A first gas supply pipe (27) is provided inside the air inlet (36), a second gas supply pipe (28) is provided inside the air outlet (37), and a third gas supply pipe (29) is fixedly installed on one side of the outer wall of the gas sensor (35). The first gas supply pipe (27) is located inside the first air inlet pipe (15), the second gas supply pipe (28) is located inside the first air outlet pipe (16), and the third gas supply pipe (29) is located inside the second air inlet pipe (17).

Images