Nitrogen concentration detection mechanism

Abstract

The utility model relates to the technical field of nitrogen detection, in particular to a nitrogen concentration detection mechanism which comprises a protection box, a transmission groove is formed in the protection box, a rotating rod is rotatably connected in the transmission groove, one end of the rotating rod is fixedly connected with an eccentric disc, and sliding grooves are formed in the protection box and located on the two sides of the transmission groove. The interiors of the sliding grooves are slidably connected with pistons correspondingly, and the sides, close to each other, of the two pistons are fixedly connected with connecting rods correspondingly. The device has the beneficial effects that the operation of simultaneously feeding and discharging gas can be carried out, the real-time monitoring on the concentration of the environmental nitrogen can be realized by simultaneously feeding and discharging the gas, any dangerous gas concentration change can be immediately detected, and fresh air can continuously flow into the device, so that the safety of the device is ensured. And the sensor is not exposed in a high-concentration nitrogen environment for a long time, so that the performance of the sensor can be maintained, the aging of the sensor can be slowed down, and the operation quality and the use efficiency are greatly improved compared with the traditional device.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen detection, in particular to a nitrogen concentration detection mechanism. Background Art

[0002] In research environments, accurate gas analysis and detection are essential. Measuring the concentration of various gases, including nitrogen, can help researchers understand a variety of phenomena such as chemical reactions, climate change, microbial activity, etc.

[0003] After searching, a Chinese patent discloses a nitrogen detection device (authorization announcement number CN219608828U) including a base, a cover plate and an auxiliary circuit module, wherein the cover plate is arranged on the base to form an inner cavity, an air inlet hole, an exhaust hole and a lead interface are provided on the base, the air inlet hole and the exhaust hole are respectively arranged on the two end surfaces of the base, the lead interface is arranged on the side of the base, the auxiliary circuit module is arranged in the inner cavity, and is connected to the external device through the lead interface, including a nitrogen sensor module, a processor module, an air pressure detection module and a temperature and humidity detection module. Although the above patent technology can calculate the nitrogen content by measuring the oxygen content by semiconductor principle, its principle is simple, the data is accurate, and it is easy to implement;

[0004] However, in the actual application of this patented technology, the above-mentioned detection device cannot simultaneously intake and exhaust air during use. On the one hand, the gas sample cannot be effectively updated inside the detector, and the sensor will not be able to quickly respond to changes in the gas concentration in the environment, resulting in a lag in the detector readings. On the other hand, when the detector cannot circulate fresh air, the sensor is continuously in the same or high concentration nitrogen environment, which will accelerate the aging of the sensor element and reduce its service life. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a nitrogen concentration detection mechanism.

[0006] The technical solution of the utility model is as follows: a nitrogen concentration detection mechanism comprises a protection box, a transmission groove is provided inside the protection box, a rotating rod is rotatably connected inside the transmission groove, an eccentric disk is fixedly connected to one end of the rotating rod, sliding grooves are provided inside the protection box and on both sides of the transmission groove, pistons are slidably connected inside the sliding grooves, connecting rods are fixedly connected to the sides of the two pistons that are close to each other, ends of the connecting rods away from the pistons extend to the inside of the transmission groove and are fixedly connected with connecting blocks, a limiting pin is fixedly connected to the side of the eccentric disk away from the rotating rod, and the limiting pin is slidably connected to the connecting block.

[0007] Through the above technical scheme, the rotating rod can operate smoothly under the drive of the motor, which improves the stability and reliability of the transmission. A piston is slidably connected in the sliding groove. One side of each piston is connected to the corresponding other piston through a connecting rod. The other end of the connecting rod is fixedly connected to a connecting block. The eccentric disk is slidably connected to the connecting block through a limit pin. The rotation of the eccentric disk drives the piston to reciprocate, which effectively realizes the suction and discharge of gas, thereby improving the gas circulation efficiency of the detection system.

[0008] As a preferred embodiment, a placement groove is provided inside the protective box and below the transmission groove, a nitrogen detector is fixedly connected inside the placement groove, a first connecting pipe is fixedly connected to the input end of the nitrogen detector, and a second connecting pipe is fixedly connected to the output end of the nitrogen detector, and the first connecting pipe and the second connecting pipe extend from one end of the nitrogen detector to the inside of the corresponding sliding groove.

[0009] Through the above technical solution, the input end and the output end of the nitrogen detector are connected to the first connecting tube and the second connecting tube respectively. This connection method allows nitrogen to be effectively sucked into the detector for measurement, and the measured gas can be discharged, ensuring the continuity and accuracy of the detection.

[0010] As a preferred embodiment, an air inlet pipe is fixedly connected to the outside of the protective box, and an air outlet pipe is fixedly connected to the outside of the protective box and on the side away from the air inlet pipe, and the ends of the air inlet pipe and the air outlet pipe that are close to each other extend to the inside of the corresponding sliding groove.

[0011] Through the above technical solution, an air inlet pipe and an air outlet pipe are arranged on the outside of the protective box, one end of which leads to the inside of the sliding groove. The air inlet pipe and the air outlet pipe are arranged to ensure the introduction and discharge channels of nitrogen.

[0012] As a preferred embodiment, a motor is fixedly connected to the outer side of the protection box, and the output shaft of the motor extends to the inside of the transmission groove and is fixedly connected to one end of the rotating rod.

[0013] Through the above technical solution, the output shaft of the motor directly drives the rotating rod, providing a stable and reliable power source and ensuring the periodic movement of the piston.

[0014] As a preferred embodiment, one-way valves are fixedly connected inside the air inlet pipe, the first connecting pipe, the air outlet pipe and the second connecting pipe.

[0015] Through the above technical solution, the one-way valve can prevent the gas from flowing back when pushing in the reverse direction.

[0016] As a preferred embodiment, a wireless signal transceiver is fixedly connected to the bottom of the protection box, a sensor is fixedly connected to the bottom of the protection box and on one side of the wireless signal transceiver, and a display screen is fixedly connected to the outside of the protection box.

[0017] Through the above technical solution, the wireless signal transceiver facilitates the wireless transmission of detection data, improving the flexibility and convenience of the detection system. At the same time, the sensor is fixed next to the wireless signal transceiver for real-time monitoring of the equipment working environment or the status of the detection sample. The display screen is fixed on the outside of the protective box to conveniently and intuitively display the detection results and system information, thereby improving the user's operating experience and detection efficiency.

[0018] As a preferred implementation, the top and bottom of the protection box are fixedly connected with mounting plates.

[0019] Through the above technical solution, the mounting plate is fixedly connected to the top and bottom of the protective box, making it easier to fix and install the equipment in different environments.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] In the utility model, the above-mentioned device drives the connecting rod to move the two pistons laterally at the same time through the rotation of the eccentric disk, so that the air intake and air exhaust operations can be performed simultaneously. On the one hand, the simultaneous air intake and air exhaust can realize real-time monitoring of the nitrogen concentration in the environment, ensuring that any dangerous changes in gas concentration are detected immediately. On the other hand, by continuously inflowing fresh air, the sensor will not be exposed to a high concentration of nitrogen environment for a long time, which helps to maintain the performance of the sensor and slow down aging, greatly improving the operation quality and use efficiency compared with traditional devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first-perspective stereogram of the present invention;

[0023] Figure 2 It is a second perspective stereogram of the utility model;

[0024] Figure 3 This is a third perspective stereogram of the utility model;

[0025] Figure 4 It is a sectional stereoscopic schematic diagram of the utility model;

[0026] Figure 5 It is a partial explosion schematic diagram of the utility model;

[0027] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0028] Legend: 1. Protective box; 2. Transmission groove; 3. Rotating rod; 4. Eccentric disk; 5. Sliding groove; 6. Piston; 7. Connecting rod; 8. Connecting block; 9. Inlet pipe; 10. First connecting pipe; 11. Outlet pipe; 12. Second connecting pipe; 13. Placement groove; 14. Nitrogen detector; 15. Wireless signal transceiver; 16. Sensor; 17. Display screen; 18. Motor; 19. Mounting plate; 20. One-way valve; 21. Limit pin. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a nitrogen concentration detection mechanism, including a protection box 1, a transmission groove 2 is opened inside the protection box 1, a rotating rod 3 is rotatably connected inside the transmission groove 2, an eccentric disk 4 is fixedly connected to one end of the rotating rod 3, a sliding groove 5 is opened inside the protection box 1 and on both sides of the transmission groove 2, a piston 6 is slidably connected inside the sliding groove 5, a connecting rod 7 is fixedly connected to the side where the two pistons 6 are close to each other, and the end of the connecting rod 7 away from the piston 6 extends to the inside of the transmission groove 2 and a connecting block 8 is fixedly connected therebetween, and the eccentric disk 4 is away from the rotating rod One side of 3 is fixedly connected with a limit pin 21, and the limit pin 21 is slidably connected to the connecting block 8. In the above device, the rotating rod 3 can operate smoothly under the drive of the motor 18, thereby improving the stability and reliability of the transmission. A piston 6 is slidably connected in the sliding groove 5, and one side of each piston 6 is connected to the corresponding other piston 6 through a connecting rod 7. The other end of the connecting rod 7 is fixedly connected with a connecting block 8. The eccentric disk 4 is slidably connected to the connecting block 8 through the limit pin 21. The piston 6 is driven to reciprocate by the rotation of the eccentric disk 4, thereby effectively realizing the suction and discharge of gas, thereby improving the gas circulation efficiency of the detection system.

[0033] Among them, a placement groove 13 is opened inside the protective box 1 and below the transmission groove 2, and a nitrogen detector 14 is fixedly connected inside the placement groove 13. The input end of the nitrogen detector 14 is fixedly connected to the first connecting pipe 10, and the output end of the nitrogen detector 14 is fixedly connected to the second connecting pipe 12. The first connecting pipe 10 and the second connecting pipe 12 extend to the inside of the corresponding sliding groove 5 at one end away from the nitrogen detector 14. The input end and the output end of the nitrogen detector 14 in the above device are respectively connected to the first connecting pipe 10 and the second connecting pipe 12. This connection method allows nitrogen to be effectively sucked into the detector for measurement, and the measured gas can be discharged, thereby ensuring the continuity and accuracy of the detection.

[0034] Among them, the outer side of the protective box 1 is fixedly connected with an air inlet pipe 9, and the outer side of the protective box 1 and the side away from the air inlet pipe 9 is fixedly connected with an air outlet pipe 11. The ends of the air inlet pipe 9 and the air outlet pipe 11 that are close to each other extend to the inside of the corresponding sliding groove 5. In the above device, the outer side of the protective box 1 has an air inlet pipe 9 and an air outlet pipe 11, one end of which leads to the inside of the sliding groove 5. The air inlet pipe 9 and the air outlet pipe 11 are arranged to ensure the introduction and discharge channels of nitrogen.

[0035] Among them, a motor 18 is fixedly connected to the outside of the protective box 1, and the output shaft of the motor 18 extends to the inside of the transmission groove 2 and is fixedly connected to one end of the rotating rod 3. In the above device, the output shaft of the motor 18 directly drives the rotating rod 3, providing a stable and reliable power source, ensuring the periodic movement of the piston 6.

[0036] Among them, the inside of the air inlet pipe 9, the first connecting pipe 10, the air outlet pipe 11 and the second connecting pipe 12 are all fixedly connected with a one-way valve 20. In the above device, the one-way valve 20 can prevent the gas from flowing back when pushing in the reverse direction.

[0037] Among them, a wireless signal transceiver 15 is fixedly connected to the bottom of the protection box 1, a sensor 16 is fixedly connected to the bottom of the protection box 1 and on one side of the wireless signal transceiver 15, and a display screen 17 is fixedly connected to the outside of the protection box 1. The wireless signal transceiver 15 of the above-mentioned device is convenient for wireless transmission of detection data, thereby improving the flexibility and convenience of the detection system. At the same time, the sensor 16 is fixed next to the wireless signal transceiver 15 for real-time monitoring of the working environment of the equipment or the status of the detection sample. The display screen 17 is fixed on the outside of the protection box 1 for convenient and intuitive display of the detection results and system information, thereby improving the user's operating experience and detection efficiency.

[0038] Among them, the top and bottom of the protection box 1 are fixedly connected with a mounting plate 19. In the above device, the mounting plate 19 is fixedly connected to the top and bottom of the protection box 1, making the equipment easier to fix and install in different environments.

[0039] Working principle:

[0040] like Figure 1-Figure 6 As shown, when the above-mentioned device is in use, the entire device is first installed and fixed by the mounting plate 19. When in use, the motor 18 is controlled by an external control device to drive the eccentric disk 4 and the limit pin 21 to slide on the connecting block 8. The connecting rod 7 is fixed on both sides of the connecting block 8, so that the piston 6 is driven to move laterally through the connecting rod 7 at the same time. When the piston 6 moves, air is extracted through the air inlet pipe 9, and then the gas is transmitted to the interior of the nitrogen detector 14 through the first connecting pipe 10. After the detection, the detected gas is discharged through the second connecting pipe 12 and the air outlet pipe 11, and the detected value is viewed through the display screen 17. By continuously inflowing fresh air, it will not be exposed to a high concentration of nitrogen environment for a long time, which helps to maintain the performance of the nitrogen detector 14 and slow down aging, and greatly improves the operation quality and use efficiency compared with traditional devices.

[0041] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution 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 they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A nitrogen concentration detection mechanism, comprising a protective box (1), characterized in that: The protection box (1) has a transmission groove (2) formed inside, a rotating rod (3) is rotatably connected inside the transmission groove (2), one end of the rotating rod (3) is fixedly connected to an eccentric disk (4), sliding grooves (5) are formed inside the protection box (1) and on both sides of the transmission groove (2), pistons (6) are slidably connected inside the sliding grooves (5), the sides of the two pistons (6) close to each other are fixedly connected to connecting rods (7), the ends of the connecting rods (7) away from the pistons (6) extend into the transmission groove (2) and a connecting block (8) is fixedly connected therebetween, and a limiting pin (21) is fixedly connected to the side of the eccentric disk (4) away from the rotating rod (3), and the limiting pin (21) is slidably connected to the connecting block (8).

2. A nitrogen concentration detection mechanism according to claim 1, characterized in that: A placement groove (13) is provided inside the protection box (1) and below the transmission groove (2); a nitrogen detector (14) is fixedly connected inside the placement groove (13); an input end of the nitrogen detector (14) is fixedly connected to a first connecting pipe (10); an output end of the nitrogen detector (14) is fixedly connected to a second connecting pipe (12); and ends of the first connecting pipe (10) and the second connecting pipe (12) away from the nitrogen detector (14) extend to the inside of the corresponding sliding groove (5).

3. A nitrogen concentration detection mechanism according to claim 2, characterized in that: An air inlet pipe (9) is fixedly connected to the outside of the protection box (1), and an air outlet pipe (11) is fixedly connected to the outside of the protection box (1) and on a side away from the air inlet pipe (9), and the ends of the air inlet pipe (9) and the air outlet pipe (11) that are close to each other both extend to the inside of the corresponding sliding groove (5).

4. A nitrogen concentration detection mechanism according to claim 1, characterized in that: A motor (18) is fixedly connected to the outside of the protection box (1), and an output shaft of the motor (18) extends into the interior of the transmission slot (2) and is fixedly connected to one end of the rotating rod (3).

5. A nitrogen concentration detection mechanism according to claim 3, characterized in that: The air inlet pipe (9), the first connecting pipe (10), the air outlet pipe (11) and the second connecting pipe (12) are all fixedly connected with a one-way valve (20) inside.

6. A nitrogen concentration detection mechanism according to claim 1, characterized in that: The bottom of the protection box (1) is fixedly connected to a wireless signal transceiver (15), the bottom of the protection box (1) and one side of the wireless signal transceiver (15) is fixedly connected to a sensor (16), and the outside of the protection box (1) is fixedly connected to a display screen (17).

7. A nitrogen concentration detection mechanism according to claim 1, characterized in that: The top and bottom of the protection box (1) are both fixedly connected with mounting plates (19).

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