Filtering device for earth reflection measuring device

Abstract

The invention discloses a filtering device for a ground reflection measuring device, which comprises a support and a driving unit fixedly mounted on the support, the output end of the driving unit is fixedly connected with a swing rod, the other end of the swing rod is fixedly connected with a white board cabin cover, the white board cabin cover is fixedly connected with a white board body, and the white board body is fixedly connected with a filter screen. A white board sealed cabin is fixedly installed on the support and located below the driving unit, a side filtering and cleaning system is fixedly installed on the side wall of the white board sealed cabin, and a rear filtering and cleaning system is fixedly installed on the rear side wall of the white board sealed cabin. According to the invention, the sealing performance of the white board sealing cabin is improved, two sets of combined filtering and cleaning systems are adopted, the white board is fully dedusted, and filtering cotton is arranged in the filtering and cleaning systems, so that dust in the external environment can be effectively prevented from entering, the protection performance of the white board is improved, and the life cycle of the white board is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of optical radiation measuring devices, in particular to a filtering device for a ground reflection measuring device. Background Art

[0002] Atmospheric environmental science and meteorological research, all-day ground truth collection technology systems, require stable and accurate measurement of key parameters of surface radiation characteristics under normal operating conditions; scientific research fields such as crop growth monitoring also require unattended automatic measurement of surface multi-spectral reflectance in the field, monitoring changes in ground spectral radiance and spectral reflectance. Therefore, the ground reflection spectrum measurement equipment used for measuring surface radiation characteristics must adapt to harsh environments such as sand, grass, rain, and hail in the field.

[0003] When measuring the surface radiation reflectivity, a diffuse reflective white board is needed as a standard reference board. The white board will be contaminated after being exposed to the air for a long time, which will affect the accuracy of the measurement data. Therefore, special protection is required for the white board to enter the white board cabin when it is not working.

[0004] During the measurement process, the whiteboard and cabin will be slightly contaminated by floating dust and other debris, so it is necessary to take cleaning measures for the cabin and whiteboard. The existing measures include using an air compressor for cleaning, which is a relatively complicated implementation method. Over time, the system will be filled with moisture and dirt, resulting in rusty water, which will cause secondary pollution and irreversible damage to the whiteboard; another measure is to use a high-power fan to blow the whiteboard cabin from the back and top of the cabin. This method is too simple. First of all, the direction of the fan is flat wind, which is difficult to blow to the whiteboard; secondly, because the fan's air duct is connected to the air, pollutants will automatically flow into the cabin, causing pollution to the cabin and whiteboard. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a filtering device for a ground reflection measurement device, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the present invention is implemented through the following technical solutions: a filtering device for a ground reflection measuring device, comprising a bracket, a driving unit fixedly mounted on the bracket, the output end of the driving unit is fixedly connected to a swing rod, the other end of the swing rod is fixedly connected to a whiteboard cabin cover, the whiteboard cabin cover is fixedly connected to a whiteboard body, a whiteboard sealed cabin is fixedly mounted on the bracket, the whiteboard sealed cabin is located below the driving unit, a side filter cleaning system is fixedly mounted on the side wall of the whiteboard sealed cabin, and a rear filter cleaning system is fixedly mounted on the rear side wall of the whiteboard sealed cabin;

[0009] When the whiteboard body is inside the whiteboard sealed cabin, the side filter cleaning system and the rear filter cleaning system blow toward the whiteboard to clean up the floating dust on the whiteboard body; then the whiteboard body, driven by the driving unit, moves to the pause position and pauses, so that the air formed by the tangential and vertical wind forces of the two blows the dust in the whiteboard sealed cabin to the outside of the whiteboard sealed cabin; the whiteboard body slowly rises to the measuring position and enters the working state; after the measurement, the whiteboard body slowly turns to the pause position and pauses again; it accepts tangential and vertical sweeping to prevent pollutants in the air from adhering to the whiteboard body during work, and finally the whiteboard body turns to the closed state.

[0010] Preferably, the rear filter cleaning system includes a rear fan box fixed to the rear side wall of the whiteboard sealed cabin, and a turbofan fixedly installed inside the rear fan box, the bottom end of the turbofan is fixedly connected to a rear filter mesh box, the bottom end of the rear filter mesh box is fixedly connected to a rear filter bracket, the inner wall of the rear filter mesh box is provided with a rear filter, a socket is formed between the rear filter mesh box and the rear filter bracket, a rear pull-out component is movably inserted inside the socket, a sealing groove is provided on the rear fan box, and a rear sealing element is provided in the sealing groove.

[0011] Preferably, the rear pull-out assembly includes a rear filter pull-out ring located inside the socket and a pull-out handle ring fixed to the end of the rear filter pull-out ring, a rear filter pressure ring is tightly arranged on the surface of the rear filter pull-out ring, a rear filter cotton cloth is tightly arranged between the rear filter pressure ring and the rear filter pull-out ring, a countersunk hole is provided on the surface of the rear filter pull-out ring, an internal threaded hole is provided on the rear filter pressure ring, a first countersunk screw passes through the countersunk hole, and the filter cotton is screwed into the internal threaded hole of the rear filter pressure ring to fix the rear filter pull-out ring, the rear filter cotton cloth and the rear filter pressure ring together, the part of the first countersunk screw protruding from the rear filter pressure ring is threaded with a first support limit column, and a mounting base is fixedly installed on the bottom of the rear fan box, and the mounting base is pressed tightly on the rear filter mesh box.

[0012] Preferably, the side filter cleaning system includes a side filter fan box fixed to the side wall of the whiteboard sealed cabin, an axial flow fan fixedly installed inside the side filter fan box, a side filter mesh box fixedly connected to the bottom of the side filter mesh box, a side filter bracket fixedly connected to the bottom of the side filter mesh box, a side filter fixedly connected to the inner wall of the side filter mesh box, a mounting port is formed between the side filter and the side filter bracket, a side pull-out assembly is inserted into the mounting port, a sealing groove is provided on the side filter fan box, and a side sealing element is provided in the sealing groove.

[0013] Preferably, the side pull-out assembly includes a filter cotton pulling-out frame, a filter cotton pressing plate pressed against the surface of the filter cotton pulling-out frame, a side filter cotton cloth is arranged between the filter cotton pressing plate and the filter cotton pulling-out frame, a countersunk hole is provided on the filter cotton pulling-out frame, an internal threaded hole is provided on the filter cotton pressing plate, a second countersunk screw passes through the countersunk hole and the side filter cotton cloth is screwed into the internal threaded hole of the filter cotton pressing plate, the filter cotton pulling-out frame, the side filter cotton cloth and the filter cotton pressing plate are fixed together, and the part of the second countersunk screw protruding from the filter cotton pressing plate is threadedly matched with a second support limit column.

[0014] Preferably, a sealing strip is fixedly connected to the hatch of the whiteboard sealed cabin to fill the gap between the whiteboard hatch cover and the whiteboard sealed cabin.

[0015] (III) Beneficial effects

[0016] The present invention provides a filtering device for a ground reflection measurement device, which has the following beneficial effects:

[0017] 1. In the present invention, when the whiteboard body is located inside the whiteboard sealed cabin, the side filtering cleaning system and the rear filtering cleaning system blow toward the whiteboard to clean up the floating dust on the whiteboard body; then the whiteboard body is driven by the driving unit to move to the pause position and pause, so that the air formed by the tangential and vertical wind forces of the two blows the dust in the whiteboard sealed cabin to the outside of the whiteboard sealed cabin; the whiteboard body slowly rises to the measuring position and enters the working state; after the measurement is completed, the whiteboard body slowly turns to the pause position and pauses again; it accepts tangential and vertical sweeping to prevent pollutants in the air from adhering to the whiteboard body during work, and finally the whiteboard body turns to the closed state; the whiteboard sealed cabin is tightly closed; the two filtering cleaning systems are turned off to complete the dust removal work of the whiteboard body and the whiteboard sealed cabin.

[0018] 2. In the present invention, the sealing performance of the whiteboard sealed cabin is improved, and two sets of combined filtering and cleaning systems are used to fully remove dust from the whiteboard. Filter cotton is arranged inside the filtering and cleaning system, which can effectively prevent the entry of dust from the external environment and purify the air, thereby improving the protective performance of the whiteboard and its service life in the field, extending the life cycle of the whiteboard, and solving the inaccuracy of measurement caused by the contamination of the whiteboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front structural diagram of a filtering device for a ground reflection measurement device proposed by the present invention;

[0020] Figure 2 A front structural diagram of a filtering device for a ground reflection measurement device proposed by the present invention;

[0021] Figure 3 A structural diagram of a post-filter cleaning system of a filter device for a ground reflection measurement device proposed by the present invention;

[0022] Figure 4 This is a structural diagram of a rear pull-out assembly of a filter device for a ground reflection measurement device proposed by the present invention;

[0023] Figure 5 A structural diagram of a disassembled state of a rear pull-out component inside a rear filter cleaning system of a filter device for a ground reflection measurement device proposed by the present invention;

[0024] Figure 6 A three-dimensional structural diagram of a post-filter cleaning system of a filter device for a ground reflection measurement device proposed by the present invention;

[0025] Figure 7 This is a structural diagram of a side filter cleaning system of a filter device for a ground reflection measurement device proposed by the present invention;

[0026] Figure 8 This is a structural diagram of a side-pull assembly of a filtering device for a ground reflection measurement device proposed by the present invention;

[0027] Fig. 9 This is a structural diagram of the disassembled state of the inner side pull-out assembly of the side filter cleaning system of the filter device for the ground reflection measurement device proposed by the present invention;

[0028] Fig.10 A top view of the structure of the side pull-out assembly inside the side filter cleaning system of a filter device for a ground reflection measurement device proposed by the present invention;

[0029] Fig.11 This is a three-dimensional structural diagram of a side filter cleaning system of a filter device for a ground reflection measurement device proposed by the present invention.

[0030] In the figure: 1, bracket; 2, whiteboard sealed cabin; 3, swing rod; 4, whiteboard cabin cover; 5, whiteboard body; 6, sealing strip; 7, rear filter cleaning system; 71, rear fan box; 72, mounting base; 73, rear pull-out assembly; 74, rear filter mesh box; 75, rear filter bracket; 76, turbo fan; 77, rear filter; 78, rear sealing element; 731, rear filter pull-out ring; 732, rear filter cotton cloth; 733, rear filter pressure ring; 734, first support limit column ; 735, first countersunk screw; 736, pull-out handle ring; 741, socket; 8, side filter cleaning system; 81, side filter fan box; 82, axial flow fan; 83, side filter mesh box; 84, side filter bracket; 85, side pull-out assembly; 86, side filter; 87, side sealing element; 851, filter cotton pull-out rack; 852, side filter cotton cloth; 853, filter cotton pressure plate; 854, second support limit column; 855, second countersunk screw; 9, drive unit. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figures 1 to 11 The present invention provides a technical solution: a filtering device for a ground reflection measuring device, comprising a bracket 1, a driving unit 9 fixedly mounted on the bracket 1, a swing rod 3 fixedly connected to the output end of the driving unit 9, a whiteboard cabin cover 4 fixedly connected to the other end of the swing rod 3, a whiteboard body 5 fixedly connected to the whiteboard cabin cover 4, a whiteboard sealed cabin 2 fixedly mounted on the bracket 1, the whiteboard sealed cabin 2 is located below the driving unit 9, a side filter cleaning system 8 fixedly mounted on the side wall of the whiteboard sealed cabin 2, and a rear filter cleaning system 7 fixedly mounted on the rear side wall of the whiteboard sealed cabin 2;

[0033] Figure 2As shown, when the whiteboard body 5 is located inside the whiteboard sealed cabin 2, the wind generated by the side filtering and cleaning system 8 and the rear filtering and cleaning system 7 blows toward the whiteboard body 5 to sweep away the floating dust on the whiteboard body 5; then the whiteboard body 5 is driven by the driving unit 9 to move to the pause position and pause, and it can pause for 30 seconds at this time, so that the air formed by the tangential and vertical wind forces of the two blows the dust in the whiteboard sealed cabin 2 to the outside of the whiteboard sealed cabin 2; the whiteboard body 5 slowly rises to the measuring position and enters the horizontal working state position; after the measurement is completed, the whiteboard body 5 slowly turns to the pause position and pauses again, and it can pause for 30 seconds at this time. The pause time can be freely set according to actual needs, accepting tangential and vertical sweeping to prevent pollutants in the air from adhering to the whiteboard body 5 during work, and finally the whiteboard body 5 turns to a closed state; the whiteboard sealed cabin 2 is tightly closed; the two filtering and cleaning systems are turned off to complete the dust removal work of the whiteboard body 5 and the whiteboard sealed cabin 2.

[0034] The rear filter cleaning system 7 includes a rear fan box 71 fixed to the rear side wall of the whiteboard sealed cabin 2, and a turbo fan 76 fixedly installed inside the rear fan box 71. The bottom end of the turbo fan 76 is fixedly connected to a rear filter mesh box 74, and the bottom end of the rear filter mesh box 74 is fixedly connected to a rear filter bracket 75. A rear filter 77 is arranged on the inner wall of the rear filter mesh box 74. The rear filter mesh box 74 and the rear filter 77 are integrally formed, and a socket 741 is formed between the rear filter mesh box 74 and the rear filter bracket 75. A rear pull-out component 73 is movably inserted inside the socket 741. A sealing groove is arranged on the rear fan box 71, and a rear sealing element 78 is arranged in the sealing groove.

[0035] The turbo fan 76 is started, and the wind generated blows tangentially from the rear side to the surface of the whiteboard body 5. The rear filter 77 is a porous ventilation physical partition to purify the external gas. The porous physical partition layer prevents flying insects from entering the cabin and contaminating the whiteboard body 5. The rear filter bracket 75 is a bracket with a water guide ring protection to prevent water contamination. A socket 741 is formed between the rear filter mesh box 74 and the rear filter bracket 75, which is connected to the rear pull-out assembly 73.

[0036] The rear pull-out assembly 73 includes a rear filter pull-out ring 731 located inside the socket 741 and a pull-out handle ring 736 fixed to the end of the rear filter pull-out ring 731. A rear filter pressure ring 733 is pressed and arranged on the surface of the rear filter pull-out ring 731. A rear filter cotton cloth 732 is pressed and arranged between the rear filter pressure ring 733 and the rear filter pull-out ring 731. A countersunk hole is provided on the surface of the rear filter pull-out ring 731, and an internal threaded hole is provided on the rear filter pressure ring 733. A first countersunk screw 735 passes through the countersunk hole and the filter cotton is screwed into the internal threaded hole of the rear filter pressure ring 733 to fix the rear filter pull-out ring 731, the rear filter cotton cloth 732 and the rear filter pressure ring 733 together. The part of the first countersunk screw 735 protruding from the rear filter pressure ring 733 is threadedly matched with a first supporting limit column 734. A mounting base 72 is fixedly installed on the bottom of the rear fan box 71, and the mounting base 72 is pressed and arranged on the rear filter mesh box 74.

[0037] The rear filter pull-out ring 731 and the rear filter pressure ring 733 are both large arc-shaped grid structures, which are used to evenly pressure the rear filter cotton cloth 732 to prevent the rear filter cotton cloth 732 from being deformed due to the strong incoming wind force, thereby improving the service life and reliability of the rear filter cotton cloth 732; after the rear filter cotton cloth 732 has been used for a certain period of time, the rear pull-out assembly 73 can be moved out of the socket 741 by pulling the pull-out handle ring 736, and the multiple first support limit columns 734 can be unscrewed to disassemble the rear filter pressure ring 733 and replace the rear filter cotton cloth 732.

[0038] The side filter cleaning system 8 includes a side filter fan box 81 fixed to the side wall of the whiteboard sealed cabin 2, and an axial flow fan 82 fixedly installed inside the side filter fan box 81. A side filter mesh box 83 is fixedly connected to the bottom of the side filter mesh box 81, and a side filter bracket 84 is fixedly connected to the bottom of the side filter mesh box 83. A side filter 86 is fixedly connected to the inner wall of the side filter mesh box 83. The side filter mesh box 83 and the side filter 86 are integrally formed, and an installation port is formed between the side filter 86 and the side filter bracket 84. A side pull-out assembly 85 is inserted inside the installation port. A sealing groove is provided on the side filter fan box 81, and a side sealing element 87 is provided in the sealing groove.

[0039] The axial flow fan 82 is started, and the wind generated blows toward the surface of the whiteboard body 5 from the side to remove the dust on the surface. Similarly, the side filter 86 prevents flying insects from entering the whiteboard sealed cabin 2 to prevent dead bodies from contaminating the whiteboard body 5.

[0040] The side pull-out assembly 85 includes a filter cotton pulling-out frame 851, a filter cotton pressing plate 853 pressed against the surface of the filter cotton pulling-out frame 851, a side filter cotton cloth 852 is arranged between the filter cotton pressing plate 853 and the filter cotton pulling-out frame 851, a countersunk hole is provided on the filter cotton pulling-out frame 851, and an internal threaded hole is provided on the filter cotton pressing plate 853. The second countersunk screw 855 passes through the countersunk hole and the side filter cotton cloth 852 and is screwed into the internal threaded hole of the filter cotton pressing plate 853 to fix the filter cotton pulling-out frame 851, the side filter cotton cloth 852 and the filter cotton pressing plate 853 together. The part of the thread of the second countersunk screw 855 protruding from the filter cotton pressing plate 853 is matched with a second support limit column 854.

[0041] After the side filter cotton cloth 852 has been used for a certain period of time, the rear pull-out assembly 85 can be moved out of the installation port through the filter cotton pull-out rack 851, the multiple second support limit columns 854 can be unscrewed, the filter cotton pressure plate 853 can be disassembled, and the side filter cotton cloth 852 can be replaced.

[0042] A sealing strip 6 is fixedly connected to the hatch of the whiteboard sealed cabin 2 to fill the gap between the whiteboard hatch cover 4 and the whiteboard sealed cabin 2 to improve the sealing effect.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A filtering device for a ground reflection measurement device, characterized in that: The invention comprises a bracket (1), a driving unit (9) fixedly mounted on the bracket (1), the output end of the driving unit (9) being fixedly connected to a swing rod (3), the other end of the swing rod (3) being fixedly connected to a whiteboard cabin cover (4), the whiteboard cabin cover (4) being fixedly connected to a whiteboard body (5), the bracket (1) being fixedly mounted to a whiteboard sealed cabin (2), the whiteboard sealed cabin (2) being located below the driving unit (9), the side wall of the whiteboard sealed cabin (2) being fixedly mounted to a side filter cleaning system (8), and the rear side wall of the whiteboard sealed cabin (2) being fixedly mounted to a rear filter cleaning system (7); When the whiteboard body (5) is located inside the whiteboard sealed cabin (2), the side filter cleaning system (8) and the rear filter cleaning system (7) blow toward the whiteboard to clean up the floating dust on the whiteboard body (5); then, driven by the driving unit (9), the whiteboard body (5) moves to the pause position and pauses, so that the air formed by the tangential and vertical wind forces blows the dust in the whiteboard sealed cabin (2) to the outside of the whiteboard sealed cabin (2); the whiteboard body (5) slowly rises to the measuring position and enters the working state; after the measurement is completed, the whiteboard body (5) slowly turns to the pause position and pauses again; it accepts tangential and vertical blowing to prevent pollutants in the air from adhering to the whiteboard body (5) during operation, and finally the whiteboard body (5) turns to the closed state.

2. The filtering device for a ground reflection measurement device according to claim 1, characterized in that: The rear filter cleaning system (7) comprises a rear fan box (71) fixed to the rear side wall of the whiteboard sealed cabin (2), and a turbo fan (76) fixedly installed inside the rear fan box (71); the bottom end of the turbo fan (76) is fixedly connected to a rear filter mesh box (74); the bottom end of the rear filter mesh box (74) is fixedly connected to a rear filter bracket (75); a rear filter (77) is arranged on the inner wall of the rear filter mesh box (74); a socket (741) is formed between the rear filter mesh box (74) and the rear filter bracket (75); a rear pull-out assembly (73) is movably inserted inside the socket (741); a sealing groove is arranged on the rear fan box (71), and a rear sealing element (78) is arranged in the sealing groove.

3. The filtering device for a ground reflection measurement device according to claim 1, characterized in that: The rear pull-out assembly (73) comprises a rear filter pull-out ring (731) located inside the socket (741), and a pull-out handle ring (736) fixed to the end of the rear filter pull-out ring (731); a rear filter pressure ring (733) is tightly arranged on the surface of the rear filter pull-out ring (731); a rear filter cotton cloth (732) is tightly arranged between the rear filter pressure ring (733) and the rear filter pull-out ring (731); a countersunk hole is provided on the surface of the rear filter pull-out ring (731); an inner thread is provided on the rear filter pressure ring (733); The first countersunk screw (735) passes through the countersunk hole and the filter cotton is screwed into the internal threaded hole of the rear filter pressure ring (733), so as to fix the rear filter pull-out ring (731), the rear filter cotton cloth (732) and the rear filter pressure ring (733) together. The thread of the first countersunk screw (735) protruding from the rear filter pressure ring (733) is matched with the first supporting limit column (734). The bottom of the rear fan box (71) is fixedly installed with a mounting base (72), and the mounting base (72) is pressed and set on the rear filter mesh box (74).

4. The filtering device for a ground reflection measurement device according to claim 1, characterized in that: The side filter cleaning system (8) comprises a side filter fan box (81) fixed to the side wall of the whiteboard sealed cabin (2), and an axial flow fan (82) fixedly installed inside the side filter fan box (81); a side filter mesh box (83) is fixedly connected to the bottom of the side filter fan box (81); a side filter mesh bracket (84) is fixedly connected to the bottom of the side filter mesh box (83); a side filter mesh (86) is fixedly connected to the inner wall of the side filter mesh box (83); an installation opening is formed between the side filter mesh (86) and the side filter mesh bracket (84); a side pull-out assembly (85) is inserted inside the installation opening; a sealing groove is provided on the side filter fan box (81), and a side sealing element (87) is provided in the sealing groove.

5. The filtering device for a ground reflection measurement device according to claim 4, characterized in that: The side pull-out assembly (85) comprises a filter cotton pull-out frame (851), a filter cotton pressing plate (853) pressed against the surface of the filter cotton pull-out frame (851), a side filter cotton cloth (852) being arranged between the filter cotton pressing plate (853) and the filter cotton pull-out frame (851), a countersunk hole being provided on the filter cotton pull-out frame (851), and an internal threaded hole being provided on the filter cotton pressing plate (853), a second countersunk screw (855) passing through the countersunk hole and the side filter cotton cloth (852) being screwed into the internal threaded hole of the filter cotton pressing plate (853), thereby fixing the filter cotton pull-out frame (851), the side filter cotton cloth (852) and the filter cotton pressing plate (853) together, and a portion of the second countersunk screw (855) protruding from the filter cotton pressing plate (853) is threadedly matched with a second support limit column (854).

6. The filtering device for a ground reflection measurement device according to claim 1, characterized in that: A sealing strip (6) is fixedly connected to the hatch of the whiteboard sealed cabin (2) and is used to fill the gap between the whiteboard cabin cover (4) and the whiteboard sealed cabin (2).

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