Protective structure with adjusting function and gas detector comprising same

Abstract

The invention relates to the technical field of gas detection, in particular to a protection structure with an adjusting function and a gas detector comprising the same, the protection structure comprises a detection box and further comprises an alternate detection mechanism, the alternate detection mechanism comprises two detection cavities formed in the detection box, sensors are mounted in the two detection cavities, and the two detection cavities alternately ventilate; and the protection mechanism is used for cleaning the sensor and comprises two cleaning pipes installed on one side of the detection box, cleaning covers are movably installed in the cleaning pipes, and when the sensor is in a non-working state, the cleaning covers stretch into the detection cavity and rotate. According to the gas detector, the two alternately working sensors are arranged in the gas detector, so that data can be compared in real time, errors of detection data can be prevented, detection work can not be stopped during maintenance, the sensors which do not work can be maintained and cleaned while the sensors alternately work, and the detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of gas detection technology, and more specifically to a protective structure with adjustment function and a gas detector containing the structure. Background Technology

[0002] A gas detector is an instrument used to detect gas leaks and concentrations. These include portable gas detectors, handheld gas detectors, stationary gas detectors, and online gas detectors. They primarily utilize gas sensors to detect the types of gases present in the environment; gas sensors are used to detect the composition and concentration of gases.

[0003] The sensors inside existing gas detectors can become less accurate after prolonged use. Dust or impurities inside the gas can adhere to the outer wall of the sensor, which not only reduces the accuracy of the detection but also stops the detection during maintenance, affecting normal detection work. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a protective structure with adjustable functions and a gas detector containing such a structure, which can effectively solve the problem that prolonged operation of a single sensor in existing technologies can affect detection accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a protective structure with adjustable function, including a detection box, and further comprising: The alternating detection mechanism includes two detection chambers located in the detection box, each of which is equipped with a sensor, and the two detection chambers are ventilated alternately. A protective mechanism for cleaning the sensor includes two cleaning tubes installed on one side of the detection box, in which a cleaning cover is movably installed. When the sensor is not in operation, the cleaning cover extends into the detection chamber and rotates.

[0006] Furthermore, both detection chambers are externally connected to suction pipes, and the ends of the two suction pipes furthest from the detection chambers are connected to a reversing valve, which is connected to an air pump.

[0007] Furthermore, the protection mechanism also includes a piston tube fixedly installed at one end of the cleaning tube, a piston disc movably installed in the piston tube, a rotating tube rotatably installed on the piston disc, the end of the rotating tube away from the piston disc movably penetrating the cleaning tube, and a cleaning cover fixedly installed at the end of the rotating tube.

[0008] Furthermore, the rotating tube is provided with an air hole. When the rotating tube moves into the cleaning tube, the air in the detection chamber is drawn out through the cleaning cover. The piston tube is provided with a vent hole. When the rotating tube moves into the detection chamber, the air in the piston tube is discharged through the vent hole.

[0009] Furthermore, the reversing valve is provided with a reversing shaft, on which a double-headed protrusion is fixedly installed. Two air boxes are installed on the bottom wall of the reversing valve. A piston rod is movably inserted into the air box, and a return spring is sleeved on the piston rod. A transmission plate is provided at the end of the piston rod. Each time the reversing valve reverses, it will squeeze one of the transmission plates. The two air boxes and the two piston tubes are connected one-to-one.

[0010] Furthermore, the reversing valve is provided with a reversing shaft, on which a double-headed protrusion is fixedly installed. Two air boxes are installed on the bottom wall of the reversing valve. A piston rod is movably inserted into the air box, and a return spring is sleeved on the piston rod. A transmission plate is provided at the end of the piston rod. Each time the reversing valve reverses, it will squeeze one of the transmission plates. The two air boxes and the two piston tubes are connected one-to-one.

[0011] Furthermore, an air inlet pipe is connected between the detection chamber and the transmission ring which is far apart, and an air outlet pipe is connected to the outside of the transmission ring.

[0012] Furthermore, two sealing plates are rotatably installed at the connection between the cleaning tube and the detection chamber, and a coil spring is provided at the rotatable connection. A sealing gasket is provided on the outer wall of the sealing plate.

[0013] Furthermore, the detection box is externally connected to a photoelectric alarm.

[0014] A gas detector employs the aforementioned protective structure with adjustable function.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art: By setting two alternating sensors in the gas detector, not only can real-time data comparison be performed to prevent detection errors, but the detection process can also be maintained without interrupting the operation during maintenance. Furthermore, while the sensors are working alternately, the inactive sensors can be maintained and cleaned, thus improving the detection accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is an overall schematic diagram of the invention from a frontal view. Figure 2 This is an overall schematic diagram of the invention from a low-angle perspective; Figure 3 for Figure 2 Enlarged view of the structure of part A in the middle; Figure 4 A structural diagram of the protected component; Figure 5 This is a structural schematic diagram of the transmission component.

[0018] The labels in the diagram represent: 1. Detection box; 2. Suction pipe; 3. Reversing valve; 4. Air pump; 5. Photoelectric alarm; 6. Piston pipe; 7. Cleaning pipe; 8. Detection chamber; 9. Sensor; 10. Piston disc; 11. Transmission plate; 12. Rotating pipe; 13. Cleaning cover; 14. Connecting rod; 15. First magnet; 16. Transmission ring; 17. Second magnet; 18. Impeller; 19. Sealing plate; 20. Sealing gasket; 21. Double-headed protrusion; 22. Air box; 23. Piston rod; 24. Air outlet pipe; 25. Air inlet pipe; 26. Inflation pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] Example 1: refer to Figure 1 A protective structure with adjustable function and a gas detector using the protective structure are disclosed. The gas detector includes a detection box 1 and an alternating detection mechanism, comprising two detection chambers 8 opened in the detection box 1, each of which is equipped with a sensor 9. Each detection chamber 8 is externally connected to an air intake pipe 2. The ends of the two air intake pipes 2 away from the detection chambers 8 are connected to a reversing valve 3. The reversing valve 3 is connected to an air pump 4, and the two detection chambers 8 are alternately ventilated. An external photoelectric alarm 5 is connected to the detection box 1. The detection box 1 is also equipped with a processor and a controller. The processor is used to process the detection data of the two sensors 9, including data comparison, data transmission, and data storage functions. The controller is used to control the reversing valve 3 and the air pump 4, etc.

[0022] Two sensors 9 are set up in the detector to work alternately. The direction of air output from the air pump 4 is adjusted by the reversing valve 3. The two sensors 9 can not only compare data, but also continue to work when one sensor 9 is being maintained or replaced.

[0023] Furthermore, one sensor (9) can be used as the primary sensor, while the other serves as a calibration sensor. The primary sensor performs normal gas detection, while the calibration sensor is periodically adjusted to check the accuracy of the primary sensor's data. If excessive data deviations are detected, the primary sensor can be replaced or adjusted promptly.

[0024] Example 2: refer to Figure 4 The protection mechanism, used for cleaning the sensor 9, includes two cleaning tubes 7 installed on one side of the detection box 1. Two sealing plates 19 are rotatably mounted at the connection between the cleaning tubes 7 and the detection chamber 8, and a coil spring is provided at the rotatable connection. A sealing gasket 20 is provided on the outer wall of the sealing plate 19. A cleaning cover 13 is movably installed in the cleaning tube 7. When the sensor 9 is not in operation, the cleaning cover 13 extends into the detection chamber 8 and rotates. The protection mechanism also includes a piston tube 6 fixedly installed at one end of the cleaning tube 7. A piston disc 10 is movably installed in the piston tube 6, and a rotating tube 12 is rotatably installed on the piston disc 10. The end of the rotating tube 12 away from the piston disc 10 movably passes through the cleaning tube 7, and the cleaning cover 13 is fixedly installed on the rotating tube. At the end of 12, the rotating tube 12 has an air hole. When the rotating tube 12 moves into the cleaning tube 7, it draws air from the detection chamber 8 through the cleaning cover 13. The piston tube 6 has a vent hole. When the rotating tube 12 moves into the detection chamber 8, the air in the piston tube 6 is discharged through the vent hole. The reversing valve 3 has a reversing shaft, on which a double-headed protrusion 21 is fixedly installed. Two air boxes 22 are installed on the bottom wall of the reversing valve 3. A piston rod 23 is movably inserted into the air box 22, and a return spring is sleeved on the piston rod 23. A transmission plate 11 is provided at the end of the piston rod 23. Each time the reversing valve 3 reverses, it will squeeze one of the transmission plates 11. The two air boxes 22 and the two piston tubes 6 are connected one-to-one (e.g., Figure 1 As shown, an air filling pipe 26 connects the air box 22 and the piston tube 6. A transmission ring 16 is fixedly installed on the outer wall of the cleaning pipe 7. A fan wheel 18 is rotatably installed in the transmission ring 16. A second magnet 17 is provided on the fan wheel 18. A connecting rod 14 is fixedly installed on the rotating pipe 12. A first magnet 15 is provided on the connecting rod 14 that attracts the second magnet 17. An air inlet pipe 25 connects the detection chamber 8 and the transmission ring 16, which is far apart. An air outlet pipe 24 is connected to the outside of the transmission ring 16.

[0025] Combination Figure 3 and Figure 4When the reversing valve 3 reverses, the double-headed protrusion 21 replaces the compressed transmission plate 11. The transmission plate 11 drives the piston rod 23 to move into the corresponding air box 22. The air in the air box 22 enters the piston tube 6 through the inflation pipe 26. Figure 4 As shown, air pressure moves the piston disc 10 and the rotating tube 12 toward the detection chamber 8, pushing the sealing plate 19 open until the cleaning cover 13 covers the inactive sensor 9. After cleaning, the reversing valve 3 reverses again, the previously squeezed transmission plate 11 loses its squeezing effect and gradually resets, the cleaning cover 13 and the rotating tube 12 retract into the cleaning tube 7, and the sealing plate 19 blocks the opening of the cleaning tube 7 again.

[0026] It is worth noting that when the cleaning cover 13 moves into the cleaning tube 7, the space between the piston disc 10 and the cleaning tube 7 will increase. The dust cleaned from the detection chamber 8 and the cleaning cover 13 will be sucked away by the air holes on the rotating tube 12 and its own holes and stored in the space between the piston disc 10 and the cleaning tube 7. When cleaning is performed again, that is, when the cleaning cover 13 moves into the detection chamber 8, the space between the piston disc 10 and the cleaning tube 7 will decrease. The air in this space will be discharged through the vent hole, along with the dust or other adhering substances, to ensure a good cleaning effect.

[0027] like Figure 2 As shown, an air inlet pipe 25 connects the piston tube 6 and the detection chamber 8, which is located far apart. During operation, airflow continuously enters the detection chamber 8. This airflow passes through the air inlet pipe 25 and enters the transmission ring 16 at the non-operating detection chamber 8. The airflow drives the impeller 18 to rotate, which in turn drives the second magnet 17 to rotate. Figure 5 As shown, the second magnet 17 drives the first magnet 15 to rotate together through magnetic attraction, thereby driving the rotating tube 12 to rotate together. When the rotating tube 12 rotates, it will drive the cleaning cover 13 to rotate, thereby cleaning and maintaining the sensor 9.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective structure with adjustable function, comprising a detection box, characterized in that, Also includes: The alternating detection mechanism includes two detection chambers located in the detection box, each of which is equipped with a sensor, and the two detection chambers are ventilated alternately. A protective mechanism for cleaning the sensor includes two cleaning tubes installed on one side of the detection box, in which a cleaning cover is movably installed. When the sensor is not in operation, the cleaning cover extends into the detection chamber and rotates.

2. The protective structure with adjustable function according to claim 1, characterized in that, Both detection chambers are externally connected to suction pipes, and the ends of the two suction pipes furthest from the detection chambers are connected to a reversing valve, which is connected to an air pump.

3. The protective structure with adjustable function according to claim 2, characterized in that, The protection mechanism also includes a piston tube fixedly installed at one end of the cleaning tube, a piston disc movably installed in the piston tube, a rotating tube rotatably installed on the piston disc, the end of the rotating tube away from the piston disc movably penetrating the cleaning tube, and a cleaning cover fixedly installed at the end of the rotating tube.

4. The protective structure with adjustable function according to claim 3, characterized in that, The rotating tube has an air hole. When the rotating tube moves into the cleaning tube, it draws air from the detection chamber through the cleaning cover. The piston tube has a vent hole. When the rotating tube moves into the detection chamber, the air in the piston tube is discharged through the vent hole.

5. A protective structure with adjustable function according to claim 3, characterized in that, The reversing valve is provided with a reversing shaft, on which a double-headed protrusion is fixedly installed. Two air boxes are installed on the bottom wall of the reversing valve. A piston rod is movably inserted into the air box, and a return spring is sleeved on the piston rod. A transmission plate is provided at the end of the piston rod. Each time the reversing valve reverses, it will squeeze one of the transmission plates. The two air boxes and the two piston tubes are connected one-to-one.

6. The protective structure with adjustable function according to claim 1, characterized in that, A transmission ring is fixedly installed on the outer wall of the cleaning pipe, and a fan wheel is rotatably installed in the transmission ring. A second magnet is provided on the fan wheel. A connecting rod is fixedly installed on the rotating pipe, and a first magnet is provided on the connecting rod that attracts the second magnet.

7. A protective structure with adjustable function according to claim 6, characterized in that, An air inlet pipe is connected between the detection chamber and the transmission ring which is far apart, and an air outlet pipe is connected to the outside of the transmission ring.

8. The protective structure with adjustable function according to claim 1, characterized in that, Two sealing plates are rotatably installed at the connection between the cleaning tube and the detection chamber, and a coil spring is provided at the rotatable connection. A sealing gasket is provided on the outer wall of the sealing plate.

9. A protective structure with adjustable function according to claim 1, characterized in that, The detection box is equipped with an external photoelectric alarm.

10. A gas detector, employing the protective structure with adjustment function described in claim 1.

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