Explosion-proof shell of gas sensor

Abstract

The utility model discloses an explosion-proof shell of a gas sensor, which belongs to the technical field of sensors and is characterized in that a cavity is arranged on the inner wall of an outer shell, an inner shell is movably arranged in the outer shell, a detection tube matched with a through hole is arranged at the top of the inner shell, a base is mounted at the bottom of the inner shell, and a rotating seat is movably mounted in a rotating cavity; a sensor is installed at the top of the rotating seat, a valve is fixedly installed at the top of the detection pipe, detection cavities matched with the detection pipe are formed in the middle of the bottom plate and the middle of the mounting plate, the bottom plate is fixedly installed at the top of the detection pipe, the rotating ring is movably connected with the rotating plate through a swing arm, and a twisting seat is further arranged on the side face of the rotating ring. The twisting base is fixedly connected with the top of the outer shell. Ventilation can be performed through the side holes and the bottom holes, and the sensor can be rotated through the balls and the grooves, so that opening and closing of the upper air holes and the lower air holes are further controlled. When the shell is rotated clockwise, the rotating ring drives the rotating plate to rotate through the swing arm and opens the detection tube.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an explosion-proof shell for a gas sensor. Background Art

[0002] A gas sensor is a converter that converts the volume fraction of a certain gas into a corresponding electrical signal. The detection head conditions the gas sample through the gas sensor, usually including filtering out impurities and interfering gases, and drying or refrigerating the instrument display part. A gas sensor is a device that converts information such as the composition and concentration of a gas into information that can be utilized by personnel, instruments, computers, etc. Gas sensors are generally classified as a type of chemical sensor.

[0003] Patent Application No.: CN202122216133.0 discloses an explosion-proof shell for a gas sensor, which includes a first shell and a second shell connected to each other. A flameproof net is provided on the first shell, and a first metal shielding plate is provided on the second shell; a cavity for accommodating a detection module is formed among the flameproof net, the inner wall of the first shell, the inner wall of the second shell, and the first metal shielding plate; a gas passage is provided on the first shell, the gas passage communicates with the cavity, a filter element is provided in the gas passage, a limiting groove is provided on the gas passage in front of the filter element, and a detachable first limiting member is provided in the limiting groove. At the same time, a gas sensor is also disclosed. Through the settings of the metal shell, the metal shielding plate and the explosion-proof net, the sensor shell has excellent explosion-proof and electromagnetic interference resistance performance. At the same time, the filter element of the present utility model can be replaced without disassembly, and the replacement process will not cause any impact on the explosion-proof and electromagnetic interference resistance performance of the detection module and the shell.

[0004] The installation process of the explosion-proof shell of the sensor in the above comparative document is cumbersome, with general freedom, and the detection tube cannot be opened or closed according to actual needs. Therefore, an explosion-proof shell for a gas sensor is designed here to solve the above problems. Content of the Utility Model

[0005] The purpose of the present utility model is to provide an explosion-proof shell for a gas sensor in order to solve the problems that the installation process of the traditional explosion-proof shell of the sensor is cumbersome, with general freedom, and the detection tube cannot be opened or closed according to actual needs.

[0006] To achieve the above object, the technical solution of the present utility model is: a gas sensor explosion-proof housing, including a housing body, a through hole is provided at the top of the housing body, a cavity is provided on the inner wall of the housing body, an inner housing is movably arranged inside the housing body, a detection tube cooperating with the through hole is arranged at the top of the inner housing, and a limiting ring cooperating with the inner housing is arranged at the bottom of the housing body; a base is installed at the bottom of the inner housing, a rotating cavity is provided at the top of the base, a rotating seat is movably installed in the rotating cavity, a sensor is installed at the top of the rotating seat, a valve is fixedly installed at the top of the detection tube, the valve includes a bottom plate and a mounting plate, detection cavities cooperating with the detection tube are provided in the middle of the bottom plate and the mounting plate, the bottom plate is fixedly installed at the top of the detection tube, multiple groups of rotating plates for controlling the opening and closing of the detection cavity are rotatably arranged on the bottom plate, a rotating ring is also rotatably arranged on the bottom plate, the rotating ring is movably connected with the rotating plate through a swing arm; multiple groups of mounting columns are also arranged on the bottom plate, the mounting plate is installed at the top of the mounting columns, multiple groups of rotating grooves cooperating with the mounting columns are provided on the rotating ring, and a torsion seat is also arranged on the side of the rotating ring, and the torsion seat is fixedly connected with the top of the housing body.

[0007] As a further scheme of the present utility model: a T-shaped seat is arranged at the top of the inner housing, and a T-shaped groove cooperating with the T-shaped seat is provided at the top of the housing body.

[0008] As a further scheme of the present utility model: multiple bottom holes communicating with the cavity are provided on the limiting ring, and multiple side holes are provided on the outer wall of the inner housing.

[0009] As a further scheme of the present utility model: multiple slots are provided on the side wall of the rotating cavity, springs are installed in the slots, balls are installed on the outer sides of the springs, and multiple grooves cooperating with the balls are provided on the outer wall of the rotating seat.

[0010] As a further scheme of the present utility model: multiple upper ventilation holes are provided on the rotating seat, and multiple lower ventilation holes are provided on the base.

[0011] The present utility model hereby provides a gas sensor explosion-proof housing through improvement. Compared with the prior art, it has the following improvements and advantages:

[0012] The utility model can rotate the outer shell through the cooperation of the outer shell body and the inner shell body, and can ventilate the inner shell body through the side holes and the bottom holes. The sensor can be rotated through the cooperation of the ball and the groove, and the communication and closing of the upper ventilation hole and the lower ventilation hole can be controlled during the rotation. When detection is required, the outer shell body is rotated clockwise. Since the bottom plate is fixedly connected to the top of the detection tube, at this time, the rotating ring drives the rotating plate to rotate through the swing arm and opens the detection tube. This structure is simple and easy to maintain, which further improves the practicability and stability of the explosion-proof shell of the gas sensor. Description of the Drawings

[0013] The following further explains the present utility model in conjunction with the drawings and embodiments:

[0014] Figure 1 is the three-dimensional structure of the present utility model Figure 1 ;

[0015] Figure 2 is the three-dimensional structure of the present utility model Figure 2 ;

[0016] Figure 3 is the cross-sectional view of the present utility model;

[0017] Figure 4 is the internal structure diagram of the valve in the present utility model.

[0018] Description of the Reference Numerals:

[0019] 1. Outer shell body; 2. Through hole; 3. Cavity; 4. Limit ring; 5. Inner shell body; 6. Side hole; 7. Detection tube; 8. T-shaped seat; 9. T-shaped groove; 10. Base; 11. Rotating cavity; 12. Rotating seat; 13. Upper ventilation hole; 14. Lower ventilation hole; 15. Slot; 16. Spring; 17. Ball; 18. Groove; 19. Sensor; 20. Valve; 21. Bottom plate; 22. Mounting plate; 23. Detection cavity; 24. Rotating plate; 25. Mounting post; 26. Rotating ring; 27. Rotating groove; 28. Swing arm; 29. Twisting seat; 30. Bottom hole. Specific Embodiments

[0020] The following will combine the attached Figures 1 to 4 The present utility model will be described in detail. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides an explosion-proof shell for a gas sensor through improvement, asFigures 1 - 4 As shown in the figure, an explosion-proof housing for a gas sensor includes a housing body 1. A through hole 2 is provided at the top of the housing body 1, and a cavity 3 is provided on the inner wall of the housing body 1. An inner housing body 5 is movably arranged inside the housing body 1. A detection tube 7 that cooperates with the through hole 2 is provided at the top of the inner housing body 5, and a limit ring 4 that cooperates with the inner housing body 5 is provided at the bottom of the housing body 1; A base 10 is installed at the bottom of the inner housing body 5. A rotation cavity 11 is provided at the top of the base 10, and a rotating seat 12 is movably installed in the rotation cavity 11. A sensor 19 is installed at the top of the rotating seat 12. A valve 20 is fixedly installed at the top of the detection tube 7. The valve 20 includes a bottom plate 21 and a mounting plate 22. Detection cavities 23 that cooperate with the detection tube 7 are provided in the middle of both the bottom plate 21 and the mounting plate 22. The bottom plate 21 is fixedly installed at the top of the detection tube 7. Multiple groups of rotating plates 24 that control the opening and closing of the detection cavity 23 are rotatably arranged on the bottom plate 21. A rotating ring 26 is also rotatably arranged on the bottom plate 21. The rotating ring 26 is movably connected to the rotating plate 24 through a swing arm 28; Multiple groups of mounting posts 25 are also provided on the bottom plate 21. The mounting plate 22 is installed at the top of the mounting posts 25. Multiple groups of rotating grooves 27 that cooperate with the mounting posts 25 are provided on the rotating ring 26. A torsion seat 29 is also provided on the side of the rotating ring 26, and the torsion seat 29 is fixedly connected to the top of the housing body 1.

[0022] Through the cooperation of the housing body 1 and the inner housing body 5, the housing body 1 can be rotated, and the inner housing body 5 can be ventilated through the side holes 6 and the bottom holes 30. Through the cooperation of the ball 17 and the groove 18, the sensor 19 can be rotated, and the communication and closing of the upper ventilation holes 13 and the lower ventilation holes 14 can be controlled during the rotation. When detection is required, the housing body 1 is rotated clockwise. Since the bottom plate 21 is fixedly connected to the top of the detection tube 7, at this time, the rotating ring 26 drives the rotating plate 24 to rotate through the swing arm 28 and opens the detection tube 7. This structure is simple and easy to maintain, which further improves the practicability and stability of the explosion-proof housing for the gas sensor.

[0023] Refer to the attached Figure 3 , a T-shaped seat 8 is provided at the top of the inner housing body 5, and a T-shaped groove 9 that cooperates with the T-shaped seat 8 is provided at the top of the housing body 1.

[0024] In this embodiment: In order to ensure the rotation of the inner housing body 5 relative to the housing body 1 and further improve the stability during rotation, a T-shaped groove 9 that cooperates with the T-shaped seat 8 is provided at the top of the housing body 1.

[0025] Refer to the attached Figure 2 - attached Figure 3 , multiple bottom holes 30 that communicate with the cavity 3 are provided on the limit ring 4, and multiple side holes 6 are provided on the outer wall of the inner housing body 5.

[0026] In this embodiment: In order to communicate with the outside, a plurality of groups of side holes 6 are provided on the outer wall of the inner housing 5.

[0027] Refer to the appendix Figure 3 , a plurality of groups of slots 15 are provided on the side wall of the rotating cavity 11. Springs 16 are installed in the slots 15, and balls 17 are installed outside the springs 16. A plurality of groups of grooves 18 that cooperate with the balls 17 are provided on the outer wall of the rotating seat 12.

[0028] In this embodiment: In order to further improve the stability during rotation and position it, a plurality of groups of grooves 18 that cooperate with the balls 17 are provided on the outer wall of the rotating seat 12.

[0029] Refer to the appendix Figure 2 - appendix Figure 3 , a plurality of groups of upper ventilation holes 13 are provided on the rotating seat 12, and a plurality of groups of lower ventilation holes 14 are provided on the base 10.

[0030] In this embodiment: In order to further improve the air fluidity and heat dissipation capacity, the opening and closing of the upper ventilation holes 13 and the lower ventilation holes 14 can be further controlled according to requirements by rotating the rotating seat 12.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas sensor explosion-proof housing, characterized in that: The invention comprises an outer shell (1), a through hole (2) is formed on the top of the outer shell (1), a cavity (3) is formed on the inner wall of the outer shell (1), an inner shell (5) is movably provided inside the outer shell (1), a detection tube (7) cooperating with the through hole (2) is formed on the top of the inner shell (5), and a limit ring (4) cooperating with the inner shell (5) is formed on the bottom of the outer shell (1); a base (10) is installed at the bottom of the inner shell (5), a rotating chamber (11) is formed on the top of the base (10), a rotating seat (12) is movably installed in the rotating chamber (11), a sensor (19) is installed on the top of the rotating seat (12), a valve (20) is fixedly installed on the top of the detection tube (7), the valve (20) comprises a bottom plate (21) and a mounting plate (22), the bottom plate (21) and the mounting plate (22) are connected to ... A detection cavity (23) cooperating with the detection tube (7) is provided in the middle of the mounting plate (22); the bottom plate (21) is fixedly mounted on the top of the detection tube (7); a plurality of rotating plates (24) for controlling the opening and closing of the detection cavity (23) are rotatably mounted on the bottom plate (21); a rotating ring (26) is rotatably mounted on the bottom plate (21); the rotating ring (26) is movably connected to the rotating plate (24) via a swing arm (28); a plurality of mounting columns (25) are provided on the bottom plate (21); the mounting plate (22) is mounted on the top of the mounting columns (25); a plurality of rotating grooves (27) cooperating with the mounting columns (25) are provided on the rotating ring (26); a torsion seat (29) is provided on the side of the rotating ring (26); the torsion seat (29) is fixedly connected to the top of the outer shell (1).

2. The explosion-proof housing of a gas sensor according to claim 1, characterized in that: The top of the inner shell (5) is provided with a T-shaped seat (8), and the top of the outer shell (1) is provided with a T-shaped slot (9) that matches the T-shaped seat (8).

3. The explosion-proof housing of a gas sensor according to claim 1, characterized in that: The limiting ring (4) is provided with a plurality of bottom holes (30) in communication with the cavity (3), and the outer wall of the inner shell (5) is provided with a plurality of side holes (6).

4. The explosion-proof housing of a gas sensor according to claim 1, characterized in that: The side wall of the rotating chamber (11) is provided with a plurality of groups of slots (15), a spring (16) is installed in the slot (15), a ball (17) is installed outside the spring (16), and the outer wall of the rotating seat (12) is provided with a plurality of groups of grooves (18) that cooperate with the ball (17).

5. The explosion-proof housing of a gas sensor according to claim 1, characterized in that: The rotating seat (12) is provided with a plurality of groups of upper air holes (13), and the base (10) is provided with a plurality of groups of lower air holes (14).

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