A nitrogen filling and discharging maintenance device for optical machine optical warehouse

Abstract

The utility model relates to a nitrogen charging and discharging maintenance device for an optical chamber of an optical machine, and belongs to the technical field of dehumidification of optical equipment. The device comprises a charging and discharging system structure, wherein a pressure regulating valve, a pressure sensor, a humidity sensor, and an electromagnetic valve are sealed and connected in sequence through a pipeline to form an charging pipeline, a vacuum pump, a pressure sensor, a humidity sensor, and an electromagnetic valve are sealed and connected in sequence through a pipeline to form a deflation pipeline, and an intelligent controller is connected to the above-mentioned devices to form a set of electrical connection structures that can accurately control the charging and discharging of gases by detecting the charging pressure, humidity, and the deflation pressure and humidity, thereby solving the problem in the existing structure and design that the charging and discharging of gases cannot be accurately controlled to complete the dehumidification maintenance process during the dehumidification maintenance process of the optical chamber of the optical machine.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification of optical equipment, in particular to a nitrogen filling and discharging maintenance device for an optical machine optical warehouse. Background Art

[0002] The optical system of optical instruments and military optical aiming is generally a closed optical chamber. Due to changes in ambient temperature, the residual water vapor inside may form fog, affecting the visibility of the optical system. Therefore, it is necessary to fill the internal space of the optical chamber with nitrogen to dry it. The traditional method of filling is to reduce the pressure of the nitrogen bottle through a pressure reducing valve and connect it to the inflation valve of the optical chamber through a pipe, and open the deflation valve of the optical chamber at the same time, and fill and deflate at the same time to achieve the purpose of replacing the internal humid air. The disadvantage of the traditional method is that it is impossible to know whether the dehumidification has been completed, and it can only be guessed and judged based on experience and time, and the actual humidity of the internal space of the optical chamber is unknown. At the same time, the buttons of the traditional nitrogen dehumidification device are generally not large, which cannot meet the operation of dehumidifying the optical chamber in various environments, especially in insufficient light and when people wear gloves.

[0003] Based on the above technical problems, it is necessary to design a device that can accurately sense the air humidity in the optical chamber of the optical machine so as to accurately charge and discharge nitrogen for dehumidification, and can provide the needs of dehumidification operation under insufficient light and when personnel are wearing gloves. Utility Model Content

[0004] In view of the above analysis, the utility model aims to provide a nitrogen charging and discharging maintenance device for an optomechanical optical chamber, so as to solve the problems that the prior art cannot accurately charge and discharge nitrogen to accurately complete the dehumidification maintenance of the optomechanical optical chamber, and cannot meet the convenience of dehumidification operation in insufficient light and when personnel wear gloves.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] A nitrogen charging and discharging maintenance device for an optical machine optical warehouse, the device comprising a charging and discharging system, a charging and discharging nozzle, the charging and discharging system comprising a first solenoid valve, a second solenoid valve, a sampling component, a pressure regulating valve, and a vacuum pump, wherein:

[0007] The sampling assembly is provided with independent inflation channels and deflation channels;

[0008] One end of the pressure regulating valve is sealedly connected to one end of the sampling assembly air charging channel through a pipeline, the other end of the air charging channel is sealedly connected to one end of the first solenoid valve through a pipeline, and the other end of the first solenoid valve is sealedly connected to the air charging and discharging nozzle through a pipeline;

[0009] One end of the vacuum pump is sealed connected to one end of the deflation channel through a pipeline, the other end of the deflation channel is sealed connected to one end of the second solenoid valve through a pipeline, and the other end of the second solenoid valve is sealed connected to the charging and discharging nozzle through a pipeline.

[0010] Based on the further improvement of the above device, the device also includes a box body, and a power switch, a start switch, a nitrogen interface, and a power interface are arranged on the outside of the box body; one end of the inflation and deflation nozzle is located inside the box body, passes through the box body shell, and extends the other end to the outside of the box body; the inflation and deflation system is fixed inside the box body.

[0011] Based on the further improvement of the above device, the power switch and the start switch are large-sized switches with lighting functions.

[0012] Based on the further improvement of the above device, the sampling component is a cubic structure, and the inflation channel and the deflation channel run through the front side of the sampling component to the rear side, and are parallel to the left and right sides of the sampling component.

[0013] Based on the further improvement of the above device, the sampling component is also respectively provided with a first blind hole pipe and a second blind hole pipe, which are vertically connected to the inflation channel and the deflation channel, are closed at one end, and have holes on the left and right sides of the sampling component at the other end; the inner walls of the channels of the first blind hole pipe and the second blind hole pipe adjacent to the opening positions are provided with grooves for placing sealing rings.

[0014] Based on the further improvement of the above device, a humidity sensor is inserted into each of the first blind hole pipe and the second blind hole pipe, and the humidity sensor is sealed and fixed to the groove through a sealing ring.

[0015] Based on the further improvement of the above device, a first cavity and a second cavity are respectively arranged above the intersection plane of the inflation channel and the first blind hole pipe, and above the intersection plane of the deflation channel and the second blind hole pipe. The lower part of the first cavity is connected with the inflation channel and the first blind hole pipe, and the lower part of the second cavity is connected with the deflation channel and the second blind hole pipe. The upper parts of the first cavity and the second cavity are both provided with sealing covers.

[0016] Based on the further improvement of the above device, pressure sensors are respectively arranged under the sealing covers of the first cavity and the second cavity.

[0017] Based on the further improvement of the above device, the inner diameters of the first blind hole pipe and the second blind hole pipe are both smaller than the inner diameters of the inflation channel and the deflation channel.

[0018] Based on further improvement of the above device, the inflation and deflation system also includes a circuit board, which is arranged in a box body; an intelligent controller is arranged on the circuit board, and the intelligent controller is electrically connected to the pressure sensor, the humidity sensor, the vacuum pump, the pressure regulating valve, the first solenoid valve, and the second solenoid valve.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] 1. The structural design of the sampling component sets the inflation channel and the deflation channel separately, so that inflation and deflation do not affect each other; the sampling component sets a first blind hole pipe and a second blind hole pipe which are perpendicular to and connected to the inflation channel, sets a humidity sensor in the blind hole pipe, and sets a first cavity and a second cavity respectively above the intersection plane of the inflation channel and the first blind hole pipe and above the intersection plane of the deflation channel and the second blind hole pipe, and sets a pressure sensor under the sealing cover of the cavity. The above structural design cleverly installs the pressure sensor and the humidity sensor in the inflation channel and the air inlet channel, and collects the pressure and humidity during inflation and deflation without affecting inflation and deflation, thereby providing structural guarantee for accurately completing the dehumidification maintenance of the optical chamber of the optical machine;

[0021] 2. The power switch and start switch installed on the box are illuminated and large-size switches, which provide convenience for use in poor lighting conditions or when personnel are wearing gloves.

[0022] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0024] Figure 1 This is a schematic diagram of the airway connection structure of the inflation and deflation system of the utility model embodiment;

[0025] Figure 2 A three-dimensional schematic diagram of the back side of the acquisition component of the embodiment of the utility model;

[0026] Figure 3 This is a top perspective structural diagram of the sampling assembly of an embodiment of the utility model;

[0027] Figure 4This is a front perspective structural diagram of the sampling assembly of an embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of a box body according to an embodiment of the utility model;

[0029] Figure 6 It is a schematic diagram of the electrical connection structure of the inflation and deflation system of the utility model embodiment.

[0030] Reference numerals:

[0031] 1-nitrogen interface; 2-pressure reducing valve; 3-pressure sensor in the first cavity; 4-humidity sensor in the first blind hole pipeline; 5-first solenoid valve; 6-gas charging and discharging nozzle; 7-second solenoid valve; 8-humidity sensor in the second blind hole pipeline; 9-pressure sensor in the second cavity;

[0032] 10-vacuum pump; 11-inflation channel; 12-deflation channel; 13-grooves arranged in the first and second blind hole pipes; 14-sealing covers arranged on the upper parts of the first and second cavities; 15-first cavity; 16-second cavity. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] A specific embodiment of the utility model discloses a nitrogen filling and discharging maintenance device for an optical machine optical chamber, such as Figure 1 As shown, the device includes an air charging and discharging system and an air charging and discharging nozzle. The air charging and discharging system includes a first solenoid valve, a second solenoid valve, a sampling component, a pressure regulating valve, and a vacuum pump, wherein:

[0035] The sampling assembly is provided with independent inflation channels and deflation channels;

[0036] One end of the pressure regulating valve is sealedly connected to one end of the sampling assembly air charging channel through a pipeline, the other end of the air charging channel is sealedly connected to one end of the first solenoid valve through a pipeline, and the other end of the first solenoid valve is sealedly connected to the air charging and discharging nozzle through a pipeline;

[0037] One end of the vacuum pump is sealed connected to one end of the deflation channel through a pipeline, the other end of the deflation channel is sealed connected to one end of the second solenoid valve through a pipeline, and the other end of the second solenoid valve is sealed connected to the charging and discharging nozzle through a pipeline.

[0038] Specifically, the optical machine optical warehouse nitrogen charging and discharging maintenance device disclosed in this embodiment includes a charging and discharging system and a charging and discharging nozzle 6. The charging and discharging system includes a nitrogen interface 1, a pressure regulating valve 2, a sampling component, a first solenoid valve 5, a second solenoid valve 7, and a vacuum pump 10, wherein the sampling component is respectively provided with independent charging channels and discharging channels; one end of the pressure regulating valve 2 is sealedly connected to the nitrogen interface 1 through a pipeline, and the other end is sealedly connected to one end of the charging channel through a pipeline, the other end of the charging channel is sealedly connected to one end of the first solenoid valve 5 through a pipeline, and the other end of the first solenoid valve 5 is sealedly connected to the charging and discharging nozzle 6 through a pipeline, thereby forming an charging channel of the charging and discharging system; correspondingly, the charging and discharging nozzle 6 is also sealedly connected to one end of the second solenoid valve 7 through a pipeline, the other end of the second solenoid valve 7 is connected to one end of the discharging channel through a pipeline, and the other end of the discharging channel is connected to the vacuum pump 10 through a pipeline, thereby forming a discharging channel of the charging and discharging system.

[0039] It should be noted that the inflation and deflation nozzle 6 included in the device disclosed in this embodiment is a single interface with both inflation and deflation, and is not intended to limit the scope of application of the utility model and the technical solution of this embodiment. Those skilled in the art should understand that the optomechanical optical warehouse can be set as a single integrated inflation and deflation interface, or can be set as more than one interface for inflation and deflation respectively. Even if multiple interfaces are set, only one interface can be used for inflation and deflation. Therefore, the utility model and the technical solution of this embodiment are applicable to optomechanical optical warehouses with different numbers of inflation and deflation interfaces.

[0040] Further, by Figure 2 Combination Figure 3 As shown, the sampling component is a cubic structure, and the inflation channel and the deflation channel extend from the front side to the rear side of the sampling component and are parallel to the left and right sides of the sampling component.

[0041] Specifically, Figure 2 An embodiment of the sampling component is shown, and the sampling component is preferably a cubic structure. Figure 3 As shown, the inflation channel 11 and the deflation channel 12 are circular aperture pipes respectively extending from the front side to the rear side of the sampling component and parallel to the left and right sides of the sampling component. Preferably, the inflation channel 11 and the deflation channel 12 are horizontally parallel and symmetrical along the midline of the front and rear sides of the sampling component.

[0042] Exemplarily, threads for connecting fixed pipes may be provided in the inflation channel 11 and the deflation channel 12 near the front and rear sides of the sampling assembly; fixing holes may also be provided at the four corners of the sampling assembly, and the fixing holes are preferably used to fix the sampling assembly by bolts or clips.

[0043] Further, such as Figure 3 , Figure 4 As shown, the sampling component is also provided with a first blind hole pipe and a second blind hole pipe, which are vertically connected to the inflation channel and the deflation channel, are closed at one end, and have holes on the left and right sides of the sampling component at the other end; the inner walls of the channels of the first blind hole pipe and the second blind hole pipe adjacent to the opening positions are provided with grooves for placing sealing rings.

[0044] Specifically, the sampling component is also provided with a first blind hole pipe vertically penetrating the inflation channel 11 and a second blind hole pipe vertically penetrating the deflation channel 12, wherein the first blind hole pipe and the second blind hole pipe are both closed at one end and open at the other end, wherein the first blind hole pipe is opened on the left side of the sampling component, and the second blind hole pipe is opened on the right side of the sampling component. The inner walls of the channels of the first blind hole pipe and the second blind hole pipe adjacent to the openings are both provided with grooves for placing sealing rings.

[0045] Preferably, in this embodiment, the first blind hole pipe and the second blind hole pipe are both circular pipes, which are respectively arranged in the middle of the inflation channel and the deflation channel. The first blind hole pipe and the second blind hole pipe are located in the same straight line, and the first blind hole pipe and the second blind hole pipe have the same aperture and length.

[0046] Further, such as Figure 3 , Figure 4 As shown, a humidity sensor is inserted into each of the first blind hole pipe and the second blind hole pipe, and the humidity sensor is sealed and fixed to the groove via a sealing ring.

[0047] Furthermore, the inner diameters of the first blind hole pipe and the second blind hole pipe are both smaller than the inner diameters of the inflation channel and the deflation channel.

[0048] The purpose of setting the first blind hole pipe and the second blind hole pipe is to place the humidity sensor, and the purpose of placing the humidity sensor is to detect the humidity of the air flowing through the inflation channel 11 and the deflation channel 12. Therefore, in this embodiment, the first blind hole pipe and the second blind hole pipe are respectively set as single-end closed and single-end open pipes that are vertically connected to the inflation channel 11 and the deflation channel 12, and the apertures of the first blind hole pipe and the second blind hole pipe are smaller than the inflation channel 11 and the deflation channel 12. The advantage of this is that it can meet the structural requirements of air detection, so that air can flow through the gap between the blind hole pipe and the inflation and deflation pipes, and ensure the sealing after the humidity sensor is installed, avoiding air leakage or exhaust from the first blind hole pipe and the second blind hole pipe during the inflation and deflation process. On the other hand, the pipe shapes of the first blind hole pipe and the second blind hole pipe are adapted to the shape of the humidity sensor, so that the humidity sensor can be better placed and fixed in the pipe, and the air tightness in the pipe is ensured by applying a sealing ring.

[0049] Preferably, the present embodiment adopts a circular humidity sensor, so the aperture shape of the first blind hole pipe and the second blind hole pipe is set to be circular. When the circular humidity sensor is inserted into the first blind hole pipe and the second blind hole pipe respectively, a sealing ring is put on the end of the circular humidity sensor close to the opening, and the sealing ring is embedded in the groove set in the first blind hole pipe and the second blind hole pipe, which not only makes the humidity sensor better fixed in the pipe, but also forms an airtight structure, such as Figure 3 and Figure 4 The first blind hole pipe humidity sensor 4 and the second blind hole pipe humidity sensor 8 are shown in FIG.

[0050] Further, such as Figure 3 and Figure 4 As shown, a first cavity and a second cavity are respectively provided above the intersection plane of the inflation channel and the first blind hole pipe, and above the intersection plane of the deflation channel and the second blind hole pipe. The lower part of the first cavity is connected with the inflation channel and the first blind hole pipe, and the lower part of the second cavity is connected with the deflation channel and the second blind hole pipe. The upper parts of the first cavity and the second cavity are both provided with sealing covers.

[0051] Furthermore, pressure sensors are respectively disposed under the sealing covers of the first cavity and the second cavity.

[0052] The purpose of setting the pressure sensor is to detect the pressure during inflation and deflation in order to adjust the pressure regulating valve 2 or the vacuum pump 10. Since the optomechanical optical chamber is a relatively precise device, it is necessary to ensure that the pressure is within the safety threshold range during inflation or deflation to avoid damaging the optomechanical optical chamber.

[0053] Specifically, a first cavity 15 is arranged above the intersection plane of the inflation channel 11 and the first blind hole pipe. The first cavity 15 is connected with the inflation channel 11 to form a structure for internal gas circulation, which is convenient for detecting the pressure during inflation. A sealing cover 14 is arranged on the upper part of the first cavity 15, and a pressure sensor 3 is arranged on the lower part of the sealing cover 14. Based on the covering and sealing effect of the sealing cover 14 on the first cavity 15, when gas flows through the inflation channel 11, the gas will flow into the first cavity 15. Due to the sealing effect of the sealing cover 14, the gas cannot escape, which causes pressure on the sealing cover 14. Therefore, the pressure sensor 3 in the first cavity arranged at the lower part of the sealing cover 14 can detect the pressure.

[0054] Similarly, a second cavity 16 is provided above the deflation channel 12 and the second blind hole pipe inspection plane, the second cavity 16 is connected to the deflation channel 12, and a sealing cover 14 is provided on the upper part of the second cavity 16. A pressure sensor 9 is provided at the lower part of the sealing cover of the second cavity 16. Based on the same structural design, the pressure sensor 9 can detect the suction force generated by deflation during deflation.

[0055] Further, such as Figure 5 As shown, the device also includes a box body, and a power switch, a start switch, a nitrogen interface, and a power interface are arranged on the outside of the box body; one end of the inflation and deflation nozzle is located inside the box body, passes through the box body shell, and extends the other end to the outside of the box body; the inflation and deflation system is fixed inside the box body.

[0056] Specifically, the device also includes a box body, which is provided with a power switch, a start switch, a nitrogen interface 1, a power interface, and a charging and discharging nozzle 6. The nitrogen interface 1 and the charging and discharging nozzle 6 both pass through the box body, with one end located inside the box body and the other end extending outside the box body. The end of the nitrogen interface 1 located inside the box body is sealedly connected to the pressure regulating valve 2 through a pipeline, and the other end extending outside the box body is preferably configured to be adapted to be connected to an interface of a nitrogen generating device, so as to facilitate connection with the nitrogen generating device; the end of the charging and discharging nozzle 6 located inside the box body is connected to one end of the first solenoid valve 5 and the second solenoid valve 7 through a pipeline, and the other end is preferably configured to be an interface adapted to be connected to the charging and discharging nozzle of the optical machine optical chamber, so as to facilitate connection with the optical machine optical chamber.

[0057] Further, such as Figure 5 As shown, the power switch and the start switch are large-sized switches with lighting functions.

[0058] Specifically, the power switch and the start switch are large-sized, illuminated switches. Preferably, a large-sized knob switch with a background light can be used, so that it is convenient to operate when the lighting is poor and the person wearing gloves can also operate it.

[0059] Further, such as Figure 6 As shown, the inflation and deflation system also includes a circuit board, which is arranged in a box body; an intelligent controller is arranged on the circuit board, and the intelligent controller is electrically connected to the pressure sensor, the humidity sensor, the vacuum pump, the pressure regulating valve, the first solenoid valve, and the second solenoid valve.

[0060] Specifically, the inflation and deflation system also includes a circuit board, which is arranged in a box body, and an intelligent controller is arranged on the circuit board. The pressure regulating valve 2, the humidity sensor 4, the pressure sensor 3, the first solenoid valve 5, the second solenoid valve 7, the pressure sensor 9, the humidity sensor 8, and the vacuum pump 10 are all electrically connected to the intelligent controller.

[0061] The first solenoid valve 5 and the second solenoid valve 7 are usually in a closed state. When it is necessary to dehumidify the optical chamber, the intelligent controller first controls the second solenoid valve 7 to open the air passage, controls the vacuum pump 10 to exhaust air from the optical chamber, and the humidity sensor 8 detects the exhaust humidity value in real time, and the pressure sensor 9 detects the exhaust pressure value in real time and transmits it back to the intelligent controller. When the exhaust pressure value reaches a threshold value, the intelligent controller controls the closing of the second solenoid valve 7; then, the intelligent controller controls the first solenoid valve 5 to open the air passage, and controls the pressure regulating valve 10 to open the air passage. Valve 2 fills the optomechanical optical chamber with nitrogen, the humidity sensor 4 monitors the inflation humidity value in real time, and the pressure sensor 3 monitors the inflation pressure value in real time and transmits it back to the intelligent controller. When the inflation pressure value reaches the threshold, the intelligent controller controls the closing of the first solenoid valve 5. During the inflation and exhaust process, the intelligent controller not only controls the inflation and exhaust pressure or interrupts the inflation and exhaust process through the transmitted pressure value to avoid damage to the optomechanical optical chamber, but also detects whether the gas discharged from the optomechanical optical chamber has met the dehumidification requirements through the transmitted humidity value, thereby accurately judging whether the dehumidification maintenance process has been completed.

[0062] Those skilled in the art can understand that the use of pressure sensors to detect pressure values, the use of humidity sensors to detect humidity values, and the determination of whether to control the solenoid valve switch and whether the dehumidification requirements are met based on the pressure and humidity values ​​in the above embodiments are common methods in the prior art, and the present invention does not involve any software improvements. The present invention only requires that each device with corresponding functions be connected through the connection relationship given in the embodiment of the present invention, and does not involve any program software improvements. As for the connection method between the hardware devices with corresponding functions, those skilled in the art can use the existing technology to implement them, and will not be described in detail here.

[0063] The intelligent controller described in this embodiment and the pressure regulating valve 2, the humidity sensor 4, the pressure sensor 3, the first solenoid valve 5, the second solenoid valve 7, the pressure sensor 9, the humidity sensor 8, and the vacuum pump 10 provide an implementable electrical connection structure for achieving accurate inflation and deflation.

[0064] Through innovative structural design, this embodiment has a pressure sensor 3 and a humidity sensor 4 in the inflation channel, a pressure sensor 9 and a humidity sensor 8 in the deflation channel, a first solenoid valve 5 and a pressure regulating valve 2 at one end of the inflation pipeline, and a second solenoid valve 7 and a vacuum pump 10 at one end of the deflation pipeline. On the other hand, an intelligent controller is provided to connect with the above-mentioned devices to form an electrical connection structure, and the switches of the first solenoid valve 5 and the second solenoid valve 7 are controlled by detecting the humidity and pressure of inflation and deflation, and the inflation pressure of the pressure regulating valve 2 and the deflation pressure of the vacuum pump 10 are adjusted. Compared with the existing design, this embodiment can achieve accurate control of inflation and deflation, and thus complete the dehumidification maintenance process of the optical chamber of the optical machine; this embodiment also has a large-sized power switch and a start switch with background lighting function outside the box. Compared with the existing design, it is more suitable for use scenarios with poor lighting and people wearing gloves, and has better convenience.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A nitrogen filling and discharging maintenance device for an optical machine optical chamber, characterized in that: The device comprises an air charging and discharging system and an air charging and discharging nozzle. The air charging and discharging system comprises a first solenoid valve, a second solenoid valve, a sampling component, a pressure regulating valve, and a vacuum pump, wherein: The sampling assembly is provided with independent inflation channels and deflation channels; One end of the pressure regulating valve is sealedly connected to one end of the sampling assembly air charging channel through a pipeline, the other end of the air charging channel is sealedly connected to one end of the first solenoid valve through a pipeline, and the other end of the first solenoid valve is sealedly connected to the air charging and discharging nozzle through a pipeline; One end of the vacuum pump is sealed connected to one end of the deflation channel through a pipeline, the other end of the deflation channel is sealed connected to one end of the second solenoid valve through a pipeline, and the other end of the second solenoid valve is sealed connected to the charging and discharging nozzle through a pipeline.

2. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 1, characterized in that: The device also includes a box body, and a power switch, a start switch, a nitrogen interface, and a power interface are arranged on the outside of the box body; one end of the inflation and deflation nozzle is located inside the box body, passes through the box body shell, and the other end extends to the outside of the box body; the inflation and deflation system is fixed inside the box body.

3. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 1, characterized in that: The sampling component is a cubic structure, and the inflation channel and the deflation channel penetrate from the front side to the rear side of the sampling component and are parallel to the left and right sides of the sampling component.

4. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 3, characterized in that: The sampling component is also provided with a first blind hole pipe and a second blind hole pipe, which are vertically connected to the inflation channel and the deflation channel, are closed at one end, and have holes on the left and right sides of the sampling component at the other end; the inner walls of the channels of the first blind hole pipe and the second blind hole pipe adjacent to the openings are provided with grooves for placing sealing rings.

5. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 4, characterized in that: A humidity sensor is inserted into each of the first blind hole pipe and the second blind hole pipe, and the humidity sensor is sealed and fixed to the groove via a sealing ring.

6. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 5, characterized in that: A first cavity and a second cavity are respectively arranged above the intersection plane of the inflation channel and the first blind hole pipe, and above the intersection plane of the deflation channel and the second blind hole pipe. The lower part of the first cavity is connected with the inflation channel and the first blind hole pipe, and the lower part of the second cavity is connected with the deflation channel and the second blind hole pipe. The upper parts of the first cavity and the second cavity are both provided with sealing covers.

7. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 6, characterized in that: Pressure sensors are also provided under the sealing covers of the first cavity and the second cavity respectively.

8. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 5, characterized in that: The inner diameters of the first blind hole pipe and the second blind hole pipe are both smaller than the inner diameters of the inflation channel and the deflation channel.

9. The nitrogen filling and discharging maintenance device for an optical machine optical chamber according to claim 7, characterized in that: The inflation and deflation system also includes a circuit board, which is arranged in a box; an intelligent controller is arranged on the circuit board, and the intelligent controller is electrically connected to the pressure sensor, the humidity sensor, the vacuum pump, the pressure regulating valve, the first solenoid valve, and the second solenoid valve.

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