Integrated gas path purging structure for spectrometer

Abstract

The utility model discloses an integrated gas path purging structure for spectrometer, including integrated purging device and mounting bracket, fixed mounting has the air inlet pipe on the mounting bracket, the symmetry distribution's snap ring of two groups is slidably installed on the mounting bracket, the biaxial screw rod is rotatably installed on the mounting bracket, the mounting disc is rotatably installed on the mounting bracket, fixed mounting has the symmetry distribution's mount pad of two groups on the mounting disc, is equipped with the filter frame in two groups mount pad, through the symmetry of mounting disc and set up two groups mount pad and filter frame, combine the snap ring mechanism of biaxial screw rod drive, realized two groups filter frame's high -efficient quick switching, when one side filter frame needs maintenance because of adsorbing too many impurities, only need to rotate biaxial screw rod and remove snap ring locking, then drive mounting disc rotation 180 degrees, can accurate positioning to working position and relock with spare filter frame. This process does not need to stop and dismount, significantly reduced the equipment downtime caused by maintenance.

Description

Technical Field

[0001] This utility model relates to the field of spectrometer auxiliary equipment technology, specifically to an integrated gas path purging structure for a spectrometer. Background Technology

[0002] As a precision analytical instrument, the optical components of a spectrometer require extremely high cleanliness of the working environment. The gas purging system creates a positive pressure environment by continuously supplying clean gas, which can effectively prevent external contaminants from entering the optical path system. Traditional gas purging structures mostly adopt discrete pipeline designs, which have problems such as large size and uneven airflow distribution. While existing integrated gas paths improve space utilization, they still generally use fixed filter structures in the air intake filtration stage.

[0003] In the existing technology, the gas path purging system of spectrometers generally adopts traditional filtration devices. The filtration process relies entirely on manual operation. Not only does it require regular shutdowns for disassembly, cleaning, or replacement of filter elements, but it is also prone to filter element blockage due to untimely maintenance, which seriously affects the airflow stability and purging effect. Due to the lack of automatic monitoring and cleaning functions, it is difficult for operators to grasp the filtration status in real time. Frequent maintenance not only increases the cost of use, but may also lead to a decline in the gas path sealing performance. Utility Model Content

[0004] The purpose of this invention is to provide an integrated gas path purging structure for a spectrometer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated gas path purging structure for a spectrometer, comprising an integrated purging device and a mounting frame. The integrated purging device is fixedly mounted on the mounting frame, and an air inlet pipe is fixedly mounted on the mounting frame. Two sets of symmetrically distributed retaining rings are slidably mounted on the mounting frame. Both sets of retaining rings are fixedly connected to the integrated purging device and the air inlet pipe respectively through telescopic tubes. A bidirectional screw is rotatably mounted on the mounting frame, with both ends of the bidirectional screw passing through the two sets of retaining rings and threadedly connected to the two sets of retaining rings respectively. A mounting plate is rotatably mounted on the mounting frame, located between the two sets of retaining rings. Two sets of symmetrically distributed mounting seats are fixedly mounted on the mounting plate. Each set of mounting seats contains a filter frame. Both sets of retaining rings are movably engaged with one side of the filter frame. The mounting plate is rotatably connected to the mounting frame through a mounting shaft. A mounting box is fixedly mounted on the mounting frame, and the mounting box is correspondingly arranged with one side of the mounting seat. A negative pressure fan is embedded in the mounting box.

[0006] As a further preferred embodiment of this technical solution, a first gear is sleeved on the mounting shaft, a first rack is slidably mounted in the mounting bracket, the first rack meshes with the first gear, a first cylinder is fixedly mounted in the mounting bracket, and the first rack is fixedly connected to the output end of the piston rod of the first cylinder.

[0007] As a further preferred embodiment of this technical solution, an installation ring is rotatably installed inside the mounting base, and multiple sets of annularly distributed clamping plates are provided inside the mounting base. The multiple sets of clamping plates are rotatably connected to the mounting base through rotating rods. A torsion spring is sleeved on the rotating rod, and the two ends of the torsion spring are fixedly connected to the clamping plates and the mounting base, respectively. A slot is provided on the filter frame, and the multiple sets of clamping plates are movably engaged with the filter frame through the slot.

[0008] As a further preferred embodiment of this technical solution, multiple sets of rotating rods are distributed in a ring around the mounting ring, and a third gear is sleeved on each set of rotating rods. A toothed ring is sleeved on the mounting ring, and the multiple sets of third gears are meshed with the toothed ring.

[0009] As a further preferred embodiment of this technical solution, a filter screen frame is fixedly installed inside the mounting box. The filter screen frame is located between the mounting box and the mounting base interface and the negative pressure fan. A movable frame is slidably installed inside the mounting box. A lead screw is rotatably installed inside the mounting box. The lead screw passes through the movable frame and is threadedly connected to the movable frame. A roller brush is rotatably installed on the movable frame. The roller brush is fitted to the surface of the filter screen frame. A scraper brush is rotatably installed on the movable frame.

[0010] As a further preferred embodiment of this technical solution, the scraper brush and the roller brush are fitted together, a second gear is sleeved on the scraper brush, a second rack is slidably installed in the movable frame, the second rack is meshed with the second gear, a second cylinder is installed on the fixed rod in the movable frame, and the second rack is fixedly connected to the output end of the piston rod of the second cylinder.

[0011] As a further preferred embodiment of this technical solution, a cleaning block that is slidably installed inside the movable frame and is in contact with the scraper brush is provided, and a threaded rod is rotatably installed inside the movable frame, the threaded rod passing through the cleaning block and being threadedly connected to the cleaning block.

[0012] This invention provides an integrated gas path purging structure for a spectrometer, which has the following advantages: (1) This utility model achieves efficient and rapid switching between two sets of filter frames by using two sets of mounting seats and filter frames symmetrically arranged on the mounting plate, combined with a snap ring mechanism driven by a bidirectional screw. When one filter frame needs maintenance due to excessive adsorption of impurities, simply rotate the bidirectional screw to release the snap ring lock, and then drive the mounting plate to rotate 180 degrees to accurately position the spare filter frame to the working position and relock it. This process does not require machine shutdown and disassembly, significantly reducing equipment downtime caused by maintenance, ensuring the continuity and stability of the spectrometer's gas path purging, and greatly reducing the intensity of manual operation and maintenance costs.

[0013] (2) This utility model only requires rotating a single rotating rod to drive all the card plates to rotate and disengage from the card slot through the meshing transmission of the third gear and the toothed ring, thereby quickly removing the filter frame for replacement. More importantly, after use, the filter frame switched to the cleaning station faces the interface of the installation box. When the negative pressure fan is started, the impurities adsorbed on its surface can be suctioned and cleaned in reverse. At the same time, the screw mechanism in the installation box drives the moving frame to reciprocate, driving the roller brush to clean the surface of the filter frame. The scraper brush further removes the impurities attached to the roller brush, keeping it clean and efficient. When one side of the scraper brush is saturated, the second cylinder drives the second rack to move, and the scraper brush is flipped to switch the working side through the meshing of the second gear, ensuring continuous and effective cleaning ability. The cleaning block is driven by the threaded rod to automatically clean the surface of the scraper brush, forming an efficient and fully automatic cleaning cycle, which greatly improves the maintenance efficiency and the automation level of the system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural separation of the mounting bracket and mounting plate of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A; Figure 4 This is a schematic diagram showing the structural separation of the mounting base and filter frame of this utility model; Figure 5 This is a schematic diagram of the internal structure of the mounting box of this utility model; Figure 6 For the present utility model Figure 5 Enlarged view of the structure at point -B; In the diagram: 1. Integrated purging device; 2. Mounting bracket; 3. Air inlet pipe; 4. Mounting box; 5. Mounting plate; 6. Mounting shaft; 7. First gear; 8. First rack; 9. First cylinder; 10. Snap ring; 11. Telescopic tube; 12. Bidirectional screw; 13. Mounting base; 14. Filter frame; 15. Snap groove; 16. Mounting ring; 17. Snap plate; 18. Rotating rod; 19. Gear ring; 20. Third gear; 21. Torsion spring; 22. Negative pressure fan; 23. Filter screen frame; 24. Moving frame; 25. Lead screw; 26. Roller brush; 27. Scraper brush; 28. Second gear; 29. ​​Second rack; 30. Second cylinder; 31. Cleaning block; 32. Threaded rod. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, an integrated gas path purging structure for a spectrometer includes an integrated purging device 1 and a mounting frame 2. The integrated purging device 1 is fixedly mounted on the mounting frame 2. An air inlet pipe 3 is fixedly mounted on the mounting frame 2. Two sets of symmetrically distributed retaining rings 10 are slidably mounted on the mounting frame 2. Both sets of retaining rings 10 are fixedly connected to the integrated purging device 1 and the air inlet pipe 3 respectively through telescopic tubes 11. A bidirectional screw 12 is rotatably mounted on the mounting frame 2. The two ends of the bidirectional screw 12 pass through the two sets of retaining rings 10 respectively and are threadedly connected to the two sets of retaining rings 10 respectively. A mounting plate 5 is rotatably mounted on the mounting frame 2. The mounting plate 5 is located between two sets of retaining rings 10. Two sets of symmetrically distributed mounting seats 13 are fixedly mounted on the mounting plate 5. Each set of mounting seats 13 contains a filter frame 14. Both sets of retaining rings 10 are movably engaged with one side of the filter frame 14. The mounting plate 5 is rotatably connected to the mounting frame 2 via a mounting shaft 6. A mounting box 4 is fixedly mounted on the mounting frame 2, corresponding to one side of the mounting seat 13. A negative pressure fan 22 is embedded in the mounting box 4. A first gear 7 is sleeved on the mounting shaft 6. A first rack 8 is slidably mounted inside the mounting frame 2, meshing with the first gear 7. A fixed mounting box 2 is also mounted inside the mounting frame 2. The first cylinder 9 is equipped with a rack 8 fixedly connected to the output end of the piston rod of the first cylinder 9. Through two sets of mounting seats 13 and filter frames 14 symmetrically arranged on the mounting plate 5, combined with the retaining ring 10 mechanism driven by the bidirectional screw 12, efficient and rapid switching and continuous air supply between the two sets of filter frames 14 are achieved. When the filter frame 14 in the working position accumulates too many impurities due to prolonged use, leading to increased airflow resistance, the motor inside the mounting frame 2 starts, driving the bidirectional screw 12 to rotate. The rotation of the bidirectional screw 12 causes the two sets of retaining rings 10, threaded at both ends, to slide in opposite directions, thereby releasing the current working filter. After the filter holder 14 is locked, the first cylinder 9 pushes the first rack 8 to move, driving the first gear 7, which is coaxially connected to the mounting plate 5, to rotate. This causes the mounting plate 5 and its two sets of mounting seats 13 to rotate 180 degrees, precisely rotating the clean spare filter holder 14 to the working position. Finally, the bidirectional screw 12 is rotated in the opposite direction, causing the retaining ring 10 to close, firmly locking the spare filter holder 14 in the air circuit. The entire process does not require disassembling any parts or interrupting the air supply, achieving seamless switching of the filtration system and ensuring continuous and stable operation of the spectrometer's purging air circuit, greatly reducing maintenance downtime.

[0017] like Figure 4 , Figure 5 and Figure 6As shown, a mounting ring 16 is rotatably mounted inside the mounting base 13. Multiple sets of annularly distributed clamping plates 17 are provided inside the mounting base 13. All sets of clamping plates 17 are rotatably connected to the mounting base 13 via rotating rods 18. Torsion springs 21 are sleeved on the rotating rods 18, with both ends of the torsion springs 21 fixedly connected to the clamping plates 17 and the mounting base 13, respectively. A slot 15 is provided on the filter frame 14, and the multiple sets of clamping plates 17 are movably engaged with the filter frame 14 via the slot 15. Multiple sets of rotating rods 18 are annularly distributed around the mounting ring 16, and each set of rotating rods 18 is sleeved with a third gear 20. A gear ring 19 is sleeved on the mounting ring 16, and the multiple sets of third gears 20 are meshed with the gear ring 19. A filter screen frame 23 is fixedly installed inside the mounting box 4. The filter screen frame 23 is located... Between the mounting box 4 and the mounting base 13 interface and the negative pressure fan 22, a movable frame 24 is slidably installed inside the mounting box 4. A lead screw 25 is rotatably installed inside the mounting box 4, passing through the movable frame 24 and threadedly connected to it. A roller brush 26 is rotatably installed on the movable frame 24, fitting snugly against the surface of the filter screen frame 23. A scraper brush 27 is rotatably installed on the movable frame 24, fitting snugly against the surface of the roller brush 26. A second gear 28 is sleeved on the scraper brush 27. A second rack 29 is slidably installed inside the movable frame 24, meshing with the second gear 28. A second cylinder 30 is mounted on a fixed rod inside the movable frame 24, and the output of the second rack 29 and the piston rod of the second cylinder 30 is connected. The filter frame 14 is fixedly connected to the end. A cleaning block 31, which is slidably installed inside the movable frame 24 and is in contact with the scraper brush 27, is also fixedly connected to the end. A threaded rod 32 is rotatably installed inside the movable frame 24. The threaded rod 32 passes through the cleaning block 31 and is threadedly connected to the cleaning block 31. When the used filter frame 14 rotates with the mounting plate 5 to the cleaning station and docks with the mounting box 4, the negative pressure fan 22 built into the mounting box 4 starts, generating a reverse suction airflow that penetrates the filter frame 14, peels off and removes the loose impurities attached to its surface. The cleaning process for the filter screen frame 23, which intercepts impurities inside the mounting box 4, is also completed automatically. The motor drives the lead screw 25 inside the mounting box 4 to rotate, causing the movable frame 24, which is threaded to it, to move back and forth along the surface of the filter screen frame 23. The motor drives the roller brush 26 to rotate synchronously, brushing away the dust accumulated on the filter frame 23. The scraper brush 27, which is in close contact with the roller brush 26, further scrapes away the dirt adhering to the roller brush 26, keeping the roller brush 26 clean. When one side of the scraper brush 27 is saturated, the second cylinder 30 is activated, pushing the second rack 29 to move. Through the second gear 28 meshing with it, the scraper brush 27 is driven to rotate, switching the unused side to the working position to continue working. At the same time, the motor drives the threaded rod 32 to rotate, driving the cleaning block 31, which is threaded with it, to move along the surface of the scraper brush 27 to clean it. This forms a fully automatic, self-cleaning closed-loop system, which significantly improves the automation level of the equipment and the reliability of long-term operation.

[0018] This utility model provides an integrated gas path purging structure for a spectrometer. The specific working principle is as follows: Two sets of mounting seats 13 and filter frames 14 are symmetrically arranged on the mounting plate 5. Combined with the retaining ring 10 mechanism driven by the bidirectional screw 12, efficient and rapid switching and continuous gas supply between the two sets of filter frames 14 are achieved. When the filter frame 14 in the working position accumulates excessive impurities due to prolonged use, leading to increased airflow resistance, the motor inside the mounting frame 2 starts, driving the bidirectional screw 12 to rotate. The rotation of the bidirectional screw 12 causes the two sets of retaining rings 10, threaded at both ends, to slide in opposite directions, thereby releasing the current working filter frame. After locking 14, the first cylinder 9 pushes the first rack 8 to move, driving the first gear 7, coaxially connected to the mounting plate 5, to rotate. This causes the mounting plate 5 and its two sets of mounting seats 13 to rotate 180 degrees, precisely rotating the clean spare filter holder 14 to the working position. Finally, the bidirectional screw 12 is rotated in the opposite direction, causing the retaining ring 10 to close, firmly locking the spare filter holder 14 in the air circuit. The entire process requires no disassembly of any parts or interruption of the air supply, achieving seamless switching of the filtration system. This ensures continuous and stable operation of the spectrometer's purging air circuit, greatly reducing maintenance downtime. After the filter frame 14 rotates with the mounting plate 5 to the cleaning station and docks with the mounting box 4, the negative pressure fan 22 built into the mounting box 4 starts, generating a reverse suction airflow that penetrates the filter frame 14, peeling off and removing loose impurities attached to its surface. The cleaning process for the filter screen frame 23, which intercepts impurities inside the mounting box 4, is also completed automatically. The motor-driven lead screw 25 inside the mounting box 4 rotates, causing the threaded movable frame 24 to reciprocate along the surface of the filter screen frame 23. The motor on the movable frame 24 drives the roller brush 26 to rotate synchronously, brushing away the dust accumulated on the filter screen frame 23. The scraper brush 2, which is in close contact with the roller brush 26... The 7th step further scrapes away the dirt adhering to the roller brush 26, keeping the roller brush 26 clean. When one side of the scraper brush 27 is saturated, the second cylinder 30 is activated, pushing the second rack 29 to move. Through the second gear 28 meshing with it, the scraper brush 27 is driven to rotate, switching the unused side to the working position to continue working. At the same time, the motor drives the threaded rod 32 to rotate, driving the cleaning block 31 that is threaded with it to move along the surface of the scraper brush 27 to clean it, thus forming a fully automatic, self-cleaning closed-loop system, which significantly improves the automation level of the equipment and the reliability of long-term operation.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated gas path purging structure for a spectrometer, comprising an integrated purging device (1) and a mounting bracket (2), characterized in that: The integrated purging device (1) is fixedly mounted on the mounting frame (2). An air inlet pipe (3) is fixedly mounted on the mounting frame (2). Two sets of symmetrically distributed retaining rings (10) are slidably mounted on the mounting frame (2). Both sets of retaining rings (10) are fixedly connected to the integrated purging device (1) and the air inlet pipe (3) respectively through telescopic tubes (11). A bidirectional screw (12) is rotatably mounted on the mounting frame (2). The two ends of the bidirectional screw (12) pass through the two sets of retaining rings (10) respectively and are threadedly connected to the two sets of retaining rings (10). A mounting bracket is rotatably mounted on the mounting frame (2). The mounting plate (5) is located between two sets of retaining rings (10). Two sets of symmetrically distributed mounting seats (13) are fixedly installed on the mounting plate (5). Each set of mounting seats (13) is equipped with a filter frame (14). Both sets of retaining rings (10) are movably engaged with one side of the filter frame (14). The mounting plate (5) is rotatably connected to the mounting frame (2) through the mounting shaft (6). The mounting frame (2) is fixedly installed with a mounting box (4). The mounting box (4) is correspondingly set with one side of the mounting seat (13). A negative pressure fan (22) is embedded in the mounting box (4).

2. The integrated gas path purging structure for a spectrometer according to claim 1, characterized in that: A first gear (7) is sleeved on the mounting shaft (6), and a first rack (8) is slidably installed in the mounting bracket (2). The first rack (8) meshes with the first gear (7). A first cylinder (9) is fixedly installed in the mounting bracket (2), and the first rack (8) is fixedly connected to the output end of the piston rod of the first cylinder (9).

3. The integrated gas path purging structure for a spectrometer according to claim 1, characterized in that: An installation ring (16) is rotatably installed inside the mounting base (13). Multiple sets of ring-shaped clamping plates (17) are provided inside the mounting base (13). The multiple sets of clamping plates (17) are rotatably connected to the mounting base (13) through a rotating rod (18). A torsion spring (21) is sleeved on the rotating rod (18). The two ends of the torsion spring (21) are fixedly connected to the clamping plates (17) and the mounting base (13) respectively. A slot (15) is provided on the filter frame (14). The multiple sets of clamping plates (17) are movably engaged with the filter frame (14) through the slot (15).

4. The integrated gas path purging structure for a spectrometer according to claim 3, characterized in that: Multiple sets of rotating rods (18) are distributed in a ring around the mounting ring (16). Each set of rotating rods (18) is fitted with a third gear (20). The mounting ring (16) is fitted with a toothed ring (19). The multiple sets of third gears (20) are meshed with the toothed ring (19).

5. The integrated gas path purging structure for a spectrometer according to claim 1, characterized in that: A filter screen frame (23) is fixedly installed inside the mounting box (4). The filter screen frame (23) is located between the interface between the mounting box (4) and the mounting base (13) and the negative pressure fan (22). A movable frame (24) is slidably installed inside the mounting box (4). A lead screw (25) is rotatably installed inside the mounting box (4). The lead screw (25) passes through the movable frame (24) and is threadedly connected to the movable frame (24). A roller brush (26) is rotatably installed on the movable frame (24). The roller brush (26) is attached to the surface of the filter screen frame (23). A scraper brush (27) is rotatably installed on the movable frame (24).

6. The integrated gas path purging structure for a spectrometer according to claim 5, characterized in that: The scraper brush (27) is attached to the surface of the roller brush (26). A second gear (28) is sleeved on the scraper brush (27). A second rack (29) is slidably installed in the movable frame (24). The second rack (29) is meshed with the second gear (28). A second cylinder (30) is installed on the fixed rod in the movable frame (24). The second rack (29) is fixedly connected to the output end of the piston rod of the second cylinder (30).

7. The integrated gas path purging structure for a spectrometer according to claim 5, characterized in that: A cleaning block (31) that is in contact with a scraper brush (27) is slidably installed inside the movable frame (24). A threaded rod (32) is rotatably installed inside the movable frame (24). The threaded rod (32) passes through the cleaning block (31) and is threadedly connected to the cleaning block (31).

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