Tunnel CO / VI lens dustproof demisting device

Abstract

The utility model provides a tunnel CO / VI lens dustproof and demisting device, which comprises a CO / VI host, a lens, a gold-plated reflector and dustproof covers, an air outlet disc is fixed between the lens and the dustproof cover on the lens and between the gold-plated reflector and the dustproof cover on the gold-plated reflector through a mounting plate respectively, and the two dustproof covers are externally provided with an anti-fogging and dedusting unit respectively; the air outlet disc is internally provided with a vent groove, the side face of the air outlet disc is provided with an air inlet communicated with the vent groove, and the surface, facing the interior of the dust cover, of the air outlet disc is provided with a plurality of evenly-distributed air outlet holes; the connection position of the air pipe and the shell is located on the face opposite to the open face, a control circuit board, a temperature and humidity sensor, a fan and a heating resistor are arranged in the shell, the control circuit board is electrically connected with the temperature and humidity sensor, the fan and the heating resistor, and the control circuit board is electrically connected with the CO / VI host.

Description

Technical Field

[0001] The utility model relates to a dust-proof and defogging device for a tunnel CO / VI lens. Background Art

[0002] Current tunnel CO / VI monitoring instruments mainly work in tunnels or pipe galleries. Under low temperature and high humidity conditions, water mist and condensed water will be generated on the lenses and gold-plated reflectors. Under dry conditions, dust will be more serious and will slowly settle on the lens surface. Both conditions will lead to inaccurate measurement optical path and affect the accuracy of measurement data. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a dust-proof and mist-removing device for a tunnel CO / VI lens, which overcomes the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tunnel CO / VI lens dust and defogging device, comprising a CO / VI host, a lens and a gold-plated reflector, wherein the lens is located on the CO / VI host, the gold-plated reflector is fixed at a position opposite to the lens, dust covers are arranged on the lens and the gold-plated reflector, an air outlet plate is fixed between the lens and the dust cover on the lens, and between the gold-plated reflector and the dust cover on the gold-plated reflector through a mounting plate, and anti-fogging and dust removal units are arranged outside the two dust covers;

[0005] The center of the air outlet disk is a hollow structure, and a ventilation groove is provided in the air outlet disk. The side of the air outlet disk has an air inlet that penetrates the ventilation groove, and the surface of the air outlet disk facing the dust cover has a plurality of evenly distributed air outlet holes that penetrate the ventilation groove. The anti-fog and dust removal unit includes a shell with an open side, the interior of the shell is connected to the air inlet through an air pipe, and the connection position between the air pipe and the shell is located on the surface opposite to the open surface. A control circuit board, a temperature and humidity sensor, a fan and a heating resistor are arranged in the shell, the heating resistor is located near the air pipe, and the fan is located between the heating resistor and the temperature and humidity sensor, the control circuit board is electrically connected to the temperature and humidity sensor, the fan and the heating resistor, and the control circuit board is electrically connected to the CO / VI host.

[0006] Optionally, an air filter is provided on the open surface of the shell.

[0007] Optionally, the air outlet disc includes a disc base and an air outlet cover plate, the disc base has an annular ventilation groove, two air inlets are evenly distributed on the side of the disc base, and a plurality of air outlet holes are evenly distributed on the air outlet cover plate, and the disc base and the air outlet cover plate are connected by bolts.

[0008] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical scheme, the generation of mist and condensed water on the lens and the gold-plated reflective mirror in a humid environment and the coverage of dust in a dry environment can be effectively prevented; the structure is simple, the volume is small, the operation is easy, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of a specific implementation method of the utility model;

[0010] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle air outlet disc;

[0011] Figure 3 yes Figure 1 Schematic diagram of the structure of the anti-fog and dust removal unit;

[0012] Figure 1 , Figure 3 The arrows in the figure represent the direction of the air flow path;

[0013] In the figure: 1. CO / VI host; 2. Lens seat; 3. Mounting plate; 4. Air outlet disc; 5. Air pipe; 6. Anti-fog and dust removal unit; 7. Dust cover; 8. Gold-plated reflector; 9. Air outlet cover; 10. Air outlet; 11. Ventilation groove; 12. Disc base; 13. Air inlet; 14. Air filter; 15. Heating resistor; 16. Fan; 17. Control circuit board; 18. Temperature and humidity sensor. DETAILED DESCRIPTION

[0014] The utility model is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

[0015] As shown in the figure, the utility model provides a tunnel CO / VI lens dust and defogging device, including a CO / VI host 1, a lens and a gold-plated reflector 8, the lens is located on the CO / VI host 1, the gold-plated reflector 8 is fixed at a position opposite to the lens, dust covers 7 are arranged on the lens and the gold-plated reflector 8, an air outlet plate 4 is fixed between the lens and the dust cover 7 on the lens, and between the gold-plated reflector 8 and the dust cover 7 on the gold-plated reflector through a mounting plate 3, and anti-fogging and dust removal units 6 are arranged outside the two dust covers 7.

[0016] The air outlet disc 5 includes a disc base 12 and an air outlet cover 9. The disc base 12 and the air outlet cover 9 are both annular. The disc base 12 has an annular ventilation groove 11. Two air inlets 13 are evenly distributed on the side of the disc base 12. Six air outlet holes 10 are evenly distributed on the air outlet cover 9. The air outlet holes face the direction of the dust cover 7. The disc base 12 and the air outlet cover 9 are connected by bolts.

[0017] The anti-fog and dust removal unit 6 includes a shell with an open side. The interior of the shell is connected to the air inlet 13 through the air pipe 5. The connection position between the air pipe 5 and the shell is located on the surface opposite to the open surface. A control circuit board 17, a temperature and humidity sensor 18, a fan 16 and a heating resistor 15 are arranged in the shell. The heating resistor 15 is located near the air pipe 5, and the fan 16 is located between the heating resistor 15 and the temperature and humidity sensor 18. The control circuit board 17 is electrically connected to the temperature and humidity sensor 18, the fan 16 and the heating resistor 15, and the CO / VI host 1 is electrically connected to the control circuit board 17.

[0018] An air filter 14 is provided on the open surface of the housing.

[0019] When the above device is working, air passes through the anti-fog and dust removal unit 6 from the air inlet 13 of the air pipe 5, and then passes through the ventilation slot 11, and finally blows out through the 6 air outlet holes 10 of the air outlet cover 9. In this process, the temperature and humidity sensor 18 collects the temperature and humidity data of the air in the tunnel and transmits the collected data to the control circuit board 17. The CO / VI host sends the temperature and extinction coefficient information inside the CO / VI device to the control circuit board 17 in the anti-fog and dust removal device 6 in real time. The control circuit board 17 compares the air data in the tunnel with the air data in the device, and judges the working mode accordingly. There are three working modes:

[0020] 1. Dust-proof mode: When the extinction coefficient is good, the fan 16 is turned on at a low speed to ensure that the dust cover 7 is always under positive pressure relative to the external air, and dust will not float to the lens position;

[0021] 2. Anti-fogging mode: When the extinction coefficient becomes low, the temperature difference between inside and outside is greater than the set value 1 (5°C), and the humidity is greater than the set value 1 (55%), the device turns on the heating mode of the heating resistor 15, and the hot air blown out prevents the lens from fogging;

[0022] 3. Anti-condensation mode: When the extinction coefficient becomes low, the temperature is lower than the set value 2 (less than 15°C), and the air humidity is greater than the set value 2, the heating resistor 15 is turned on to the heating mode, and the fan 16 is adjusted to the high wind speed mode.

[0023] When the fan 16 is working, when the air passes through the air filter 14 and the anti-fog and dust removal unit 6 into the air pipe 5, if the heating resistor 15 is turned on, then the air outlet 10 blows out hot air, and if it is not heated, then cold air is blown out.

[0024] When air blows onto the lens, if there is condensed water, the hot air will take away the water vapor. At the same time, positive pressure is formed inside the dust cover 7, and the air flows outward, which can prevent dust from floating onto the lens.

[0025] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A dust and mist removal device for tunnel CO / VI lens, characterized by: It comprises a CO / VI host, a lens and a gold-plated reflector, wherein the lens is located on the CO / VI host, the gold-plated reflector is fixed at a position opposite to the lens, dust covers are arranged on the lens and the gold-plated reflector, an air outlet plate is fixed between the lens and the dust cover on the lens, and between the gold-plated reflector and the dust cover on the gold-plated reflector through a mounting plate, and anti-fog and dust removal units are arranged outside the two dust covers; The center of the air outlet disk is a hollow structure, and a ventilation groove is provided in the air outlet disk. The side of the air outlet disk has an air inlet that penetrates the ventilation groove, and the surface of the air outlet disk facing the dust cover has a plurality of evenly distributed air outlet holes that penetrate the ventilation groove. The anti-fog and dust removal unit includes a shell with an open side, the interior of the shell is connected to the air inlet through an air pipe, and the connection position between the air pipe and the shell is located on the surface opposite to the open surface. A control circuit board, a temperature and humidity sensor, a fan and a heating resistor are arranged in the shell, the heating resistor is located near the air pipe, and the fan is located between the heating resistor and the temperature and humidity sensor, the control circuit board is electrically connected to the temperature and humidity sensor, the fan and the heating resistor, and the control circuit board is electrically connected to the CO / VI host.

2. The tunnel CO / VI lens dust and mist prevention device according to claim 1, characterized in that: An air filter is arranged on the open surface of the shell.

3. The tunnel CO / VI lens dust and mist prevention device according to claim 1 or 2, characterized in that: The air outlet disc includes a disc base and an air outlet cover plate, the disc base is provided with an annular ventilation groove, two air inlets are evenly distributed on the side of the disc base, and a plurality of air outlet holes are evenly distributed on the air outlet cover plate, and the disc base and the air outlet cover plate are connected by bolts.

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