Air filter for liquid oxygen preparation

Abstract

The utility model relates to the technical field of liquid oxygen preparation, and discloses an air filter for liquid oxygen preparation, which comprises a filter box, an air inlet hole is arranged in the middle of the right side of the filter box, the right side of the filter box is fixedly connected with two limiters, the adjacent sides of the two limiters are fixedly connected with vibrators, and the vibrators are fixedly connected with the air inlet hole. The left sides of the two limiters are fixedly connected with permanent magnets, the right side of the inner wall of the filter box is fixedly connected with a mounting frame, the left side of the inner wall of the mounting frame is fixedly connected with a plurality of springs, the right ends of the springs are fixedly connected with the same push plate, and the right side of the mounting frame is fixedly connected with a differential pressure sensor. After the main filter screen is damaged, the permanent magnet brings the main filter screen out of the air inlet hole, the vibrator separates the main filter screen, the square telescopic stop lever does not limit the standby filter screen, the spring pushes the standby filter screen into the sliding groove, the overall structure is simple, and air filtration is not affected.

Description

Technical Field

[0001] This utility model relates to the field of liquid oxygen preparation technology, and in particular to an air filter for liquid oxygen preparation. Background Technology

[0002] Liquid oxygen is liquid oxygen, which has strong oxidizing properties and is chemically active. Liquid oxygen is produced by pressurizing, cooling and separating air. There are a lot of impurities in the air. If these impurities enter the liquid oxygen preparation device, they will seriously damage the equipment and even cause safety accidents. In order to extract high-quality liquid oxygen, people have developed air filters for liquid oxygen preparation.

[0003] Air filters for liquid oxygen production can effectively remove impurities such as dust, microorganisms, and moisture from the air, preventing impurities from entering the liquid oxygen production device and causing wear and corrosion to key components. They also reduce pipe blockages and safety hazards caused by impurity accumulation, ensuring the stable operation of the liquid oxygen production device and preventing impurities from interfering with the liquid oxygen production process, thus improving the purity of the liquid oxygen.

[0004] Modern filters employ multi-layer filtration structures. However, multi-layer air filters are complex, and there are problems with the connection and coordination between different filter layers. For example, uneven airflow distribution leads to different filtration effects in different areas, affecting the overall filtration effect. Moreover, the complex structure increases the difficulty of maintenance and cleaning. Existing solutions include using modular multi-layer filtration structures, allowing each filter module to be disassembled, replaced, and maintained individually, or developing new composite filter media to integrate multiple filtration functions into one layer, reducing the number of filter layers. However, modular structures still suffer from uneven airflow at the connection points between modules, and new composite filter media experience performance degradation after long-term use and are too expensive. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a mini quilting machine with a flat seam function, which aims to improve the problem of uneven airflow at the joint of multi-layer filter structure in the prior art, and the high price of new composite filter materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an air filter for liquid oxygen preparation, comprising a filter box, an air inlet hole in the middle of the right side of the filter box, two limiters fixedly connected to the right side of the filter box, a vibrator fixedly connected to the adjacent side of each of the two limiters, a permanent magnet fixedly connected to the left side of each of the two limiters, a mounting bracket fixedly connected to the right side of the inner wall of the filter box, multiple springs fixedly connected to the left side of the inner wall of the mounting bracket, a push plate fixedly connected to the right end of each of the multiple springs, a differential pressure sensor fixedly connected to the right side of the mounting bracket, a square telescopic stop bar fixedly connected to the bottom of the mounting bracket, an interception groove and a sliding groove in the right side of the inner wall of the filter box, a main filter screen slidably connected to the inner wall of the air inlet hole, multiple spare filter screens slidably connected to the inner wall of the sliding groove, a top cover rotatably connected to the top of the filter box, and a fixing mechanism for fixing the filter on the outside of the filter box.

[0007] As a further description of the above technical solution:

[0008] The fixing mechanism includes multiple limiting blocks, the left sides of which are fixedly connected to the right side of the filter box. Two guide rails are provided on the front and rear sides of the filter box. Slider blocks are slidably connected to the inner walls of the multiple guide rails. Multiple positioning holes are provided on the outer sides of the multiple sliders. Positioning pins are slidably connected to the inner walls of adjacent positioning holes on the upper and lower sides. Mounting seats are fixedly connected to the left sides of the multiple sliders. Multiple threaded holes are provided on the outer sides of the multiple mounting seats.

[0009] As a further description of the above technical solution:

[0010] The bottom of the filter box is fixedly connected to multiple support columns, and each of the multiple support columns is fixedly connected to a lifting device in the middle.

[0011] As a further description of the above technical solution:

[0012] Two rotating shafts are fixedly connected to the top left side of the top cover, and two pins are fixedly connected to the top left side of the filter box.

[0013] As a further description of the above technical solution:

[0014] A handle is fixedly connected to the top right side of the top cover, and a finger groove is provided on the outer side of the handle.

[0015] As a further description of the above technical solution:

[0016] An optical detector is fixedly connected to the front side of the inner wall of the filter box, and a display screen is fixedly connected to the top front side of the filter box.

[0017] As a further description of the above technical solution:

[0018] A collection shell is fixedly connected to the bottom front side of the filter box, and the bottom of the collection shell has multiple drainage holes.

[0019] As a further description of the above technical solution:

[0020] The bottom ends of the multiple support columns are all fixedly connected with anti-slip sleeves, and the anti-slip sleeves on the front and rear sides are symmetrical to each other.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the air is filtered by the main filter screen. After the main filter screen is damaged, the main filter screen is carried out of the air inlet by the permanent magnet. The vibrator makes the main filter screen detach from the permanent magnet. At the same time, the square telescopic stop bar removes the restriction on the spare filter screen. The spare filter screen enters the slide groove under the action of the spring and falls into the air inlet. The limiting component positions and restricts the new filter screen again. The overall structure is simple and the connection is tight.

[0023] 2. In this utility model, when the filter box needs to be installed on the wall, by pulling out multiple positioning pins from the positioning holes, the slider can be moved to the left. The multiple threaded holes on the mounting base on the left side of the slider are aligned with the threaded holes reserved on the mounting base. The filter is fixed with screws. At the same time, multiple positioning pins are inserted into the corresponding positioning holes to complete the installation and fixing of the filter. Attached Figure Description

[0024] Figure 1 This is a perspective view of an air filter for liquid oxygen preparation proposed in this utility model;

[0025] Figure 2 This is a cross-sectional view of the filter box of an air filter for liquid oxygen preparation proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the main filter screen of an air filter for liquid oxygen preparation proposed in this utility model;

[0027] Figure 4 This is an exploded view of the mounting bracket for an air filter used in liquid oxygen preparation according to the present invention;

[0028] Figure 5 This is a schematic diagram of the fixing mechanism of an air filter for liquid oxygen preparation proposed in this utility model.

[0029] Legend:

[0030] 1. Filter box; 2. Fixing mechanism; 201. Guide rail; 202. Slider; 203. Positioning pin; 204. Positioning hole; 205. Mounting base; 206. Threaded hole; 207. Limiting block; 3. Air inlet; 4. Limiter; 5. Vibrator; 6. Permanent magnet; 7. Mounting bracket; 8. Spring; 9. Push plate; 10. Differential pressure sensor; 11. Square telescopic stop bar; 12. Interception groove; 13. Slide groove; 14. Main filter screen; 15. Spare filter screen; 16. Top cover; 17. Support column; 18. Lifter; 19. Anti-slip sleeve; 20. Rotating shaft; 21. Pin; 22. Handle; 23. Finger groove; 24. Optical detector; 25. Display screen; 26. Collection shell; 27. Drain hole. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 2 , Figure 3 and Figure 4This utility model provides an embodiment of an air filter for liquid oxygen production, comprising a filter box 1. An air inlet 3 is provided in the middle of the right side of the filter box 1, serving as the air inlet for air to enter the filter. Two limiters 4 are fixedly connected to the right side of the filter box 1, preventing the main filter screen 14 from falling out of the air inlet 3. Vibrators 5 are fixedly connected to adjacent sides of the two limiters 4, causing the main filter screen 14 to detach from the permanent magnets 6 after being pulled out of the air inlet 3 by the permanent magnets 6 on the limiters 4. Permanent magnets 6 are fixedly connected to the left sides of the two limiters 4, attracting the main filter screen 14 and preventing it from tilting to the left or right. A mounting bracket 7 is fixedly connected to the right side of the inner wall of the filter box 1. The mounting bracket 7 provides support for multiple springs 8. Multiple springs 8 are fixedly connected to the left side of the inner wall of the mounting bracket 7. Multiple spare filter screens 15 can automatically enter the slide groove 13 through the multiple springs 8. The right end of each of the multiple springs 8 is fixedly connected to the same push plate 9, which is used to push the spare filter screen 15. A differential pressure sensor 10 is fixedly connected to the right side of the mounting bracket 7. The differential pressure sensor 10 is used to detect the blockage of the main filter screen 14. A square telescopic stop bar 11 is fixedly connected to the bottom of the mounting bracket 7. The square telescopic stop bar 11 is used to block the spare filter screen 15. An interception groove 12 is opened on the right side of the inner wall of the filter box 1. The interception groove 12 is a square telescopic stop bar. The movement of filter box 11 provides space. A groove 13 is provided on the right side of the inner wall of filter box 1, through which the spare filter screen 15 can slide into the air inlet 3. The inner wall of the air inlet 3 is slidably connected to the main filter screen 14, which is used to block impurities in the air entering the filter. Multiple spare filter screens 15 are slidably connected to the inner wall of the groove 13, which are used to replace the main filter screen 14. The top of filter box 1 is rotatably connected to the top of the filter box 1. The parts inside the filter are detected through the top cover 16, and the spare filter screens 15 can be replenished after the top cover 16 is opened. A fixing mechanism 2 is provided on the outside of filter box 1, which is used to fix the filter. The top left of the top cover 16 Two rotating shafts 20 are fixedly connected to the side, and two pins 21 are fixedly connected to the top left side of the filter box 1. The opening and closing of the top cover 16 is more convenient through the two rotating shafts 20 and the two pins 21. A handle 22 is fixedly connected to the top right side of the top cover 16. The handle 22 is used to open the top cover 16. A finger groove 23 is provided on the outer side of the handle 22. The finger groove 23 allows the fingers to fit the handle 22 better. An optical detector 24 is fixedly connected to the front side of the inner wall of the filter box 1. The optical detector 24 is used to detect the number of spare filters 15. A display screen 25 is fixedly connected to the top front side of the filter box 1. The display screen 25 is used to display the number of spare filters 15, so that people can understand the number of spare filters 15 more intuitively.

[0033] Specifically, air enters the filter through the air inlet 3. The main filter 14 blocks impurities in the incoming air. During the filtration process, the differential pressure sensor 10 monitors the blockage of the main filter 14 in real time. When the main filter 14 causes the differential pressure sensor 10 reading to be too high due to impurities, the main filter 14 needs to be replaced. The square telescopic baffle 11 retracts, releasing the blockage of the spare filter 15. The spare filter 15 slides down the slide groove 13 into the air inlet 3. The square telescopic baffle 11 extends, continuing to block the spare filter 15. The remaining spare filter 15, under the elastic force of the spring 8, still accumulates in the slide groove 13. The limiter 4 includes an electric telescopic rod. When the electric telescopic rod retracts, the permanent magnet 6 moves the main filter 14 into the air inlet 3. The filter screen 14 is brought out from the air inlet 3. Then, the vibrator 5 is activated, and the main filter screen 14 is disengaged from the permanent magnet 6 through high-frequency vibration. Then, the electric telescopic rod extends, so that the limiter 4 restricts the position of the new main filter screen 14. The optical detector 24 detects the number of spare filter screens 15 and displays it intuitively on the display screen 25, so that the staff can understand the remaining number of spare filter screens 15 and replenish them in time. When it is necessary to check the internal parts of the filter or replenish the spare filter screens 15, the staff holds the handle 22, with their fingers in the finger grooves 23. Through the cooperation of the two rotating shafts 20 and the two pins 21, the top cover 16 can be opened conveniently to check and maintain the internal parts of the filter, ensuring the continuous normal operation of the equipment.

[0034] Reference Figure 1 and Figure 5 The fixing mechanism 2 includes multiple limiting blocks 207, which limit the position of multiple sliders 202 to prevent them from sliding forward excessively. The left sides of the multiple limiting blocks 207 are fixedly connected to the right side of the filter box 1. Two guide rails 201 are provided on the front and rear sides of the filter box 1. The multiple guide rails 201 provide space for the movement of the sliders 202 and guide their direction. The sliders 202 are slidably connected to the inner walls of the multiple guide rails 201. The multiple sliders 202 allow the filter to be fixed to a wall or other object without needing to be fixed. When the filter is stored, it can be stored to reduce the space occupied. Multiple positioning holes 204 are provided on the outer side of multiple sliders 202. Positioning pins 203 are slidably connected to the inner walls of adjacent positioning holes 204 on the upper and lower sides. Multiple positioning holes 204 and multiple positioning pins 203 are used to fix the position of sliders 202. Mounting bases 205 are fixedly connected to the left side of multiple sliders 202. Multiple threaded holes 206 are provided on the outer side of multiple mounting bases 205. Multiple threaded holes 206 are used to fix the filter to the outside through screws.

[0035] Specifically, when the filter needs to be fixed to a wall or other object, first pull the positioning pin 203 out of the positioning hole 204, push the filter so that the slider 202 slides along the guide rail 201 until the mounting base 205 is close to the installation position. According to the position of the threaded hole 206 on the mounting base 205, drill a hole at the corresponding position on the wall, pass the screw through the threaded hole 206 and screw it into the drilled hole on the wall. By tightening the screw, the filter is fixed to the wall. Then, reinsert the positioning pin 203 into the corresponding positioning hole 204 so that the filter no longer slides and ensures that the filter is stable and does not shake. When it is no longer necessary to fix it to the wall, retract the slider 202 into the guide rail 201 in the same steps until the slider 202 reaches the limit block 207. At this time, the limit block 207 restricts the slider 202 from continuing to slide. Then, use the positioning pin 203 to fix the position of the slider 202, and the filter is retracted.

[0036] Reference Figure 1 and Figure 2 The bottom of the filter box 1 is fixedly connected to multiple support columns 17. The multiple support columns 17 are used to support the filter when the filter is placed on the ground. The middle of each of the multiple support columns 17 is fixedly connected to a lifting device 18, which is used to adjust the height of the filter. The bottom of the front side of the filter box 1 is fixedly connected to a collection shell 26. The collection shell 26 is used to collect the replaced main filter screen 14 and keep it for reuse, reducing environmental pollution and improving resource utilization. The bottom of the collection shell 26 is provided with multiple drainage holes 27 to prevent rainwater from falling into the collection shell 26 and damaging the collected main filter screen 14. The bottom of each of the multiple support columns 17 is fixedly connected to an anti-slip sleeve 19. The front and rear anti-slip sleeves 19 are symmetrical to each other and are used to prevent the filter from sliding sideways.

[0037] Specifically, the filter is placed on the ground, supported by multiple support columns 17 to ensure its stability. At this time, the anti-slip sleeve 19 is in direct contact with the ground to prevent the filter from sliding on the ground and to ensure its stability. When the filter height needs to be adjusted, the filter box 1 can be raised or lowered by the lifting device 18 to meet the height requirements of different working scenarios. After the old main filter screen 14 falls off the permanent magnet 6, it falls into the collection shell 26 for subsequent unified treatment, such as cleaning, maintenance and recycling, thereby reducing environmental pollution and improving resource utilization. Multiple drainage holes 27 at the bottom of the collection shell 26 allow water entering the collection shell 26 to be discharged in time, preventing rainwater from soaking the collected main filter screen 14 for a long time.

[0038] Working principle: Air enters the filter through the air inlet 3. The main filter 14 uses its tiny pores to intercept impurities in the air. The differential pressure sensor 10 monitors the pressure difference across the main filter 14 in real time. When the pressure difference of the main filter 14 is too large, the main filter 14 needs to be replaced. At this time, the square telescopic stop bar 11 retracts, releasing the obstruction of the spare filter 15. The spare filter 15 slides down the slide groove 13 into the air inlet 3, while the remaining spare filter 15 is pushed into the slide groove 13 by the elastic force of the spring 8, preparing for the next replacement of the main filter 14. Subsequently, the square telescopic stop bar 11 extends again, blocking the remaining spare filter 15. At the same time, the electric limiter 4... As the telescopic rod retracts, the permanent magnet 6 remains firmly attached to the main filter 14 due to its own magnetic force, causing the main filter 14 to be carried out of the air inlet 3 along with the permanent magnet 6. Then, the vibrator 5 is activated, causing the main filter 14 to detach from the permanent magnet 6 through vibration. Afterward, the electric telescopic rod extends, and the limiter 4 returns to its initial position, limiting the position of the new main filter 14 and ensuring that the new main filter 14 remains stable during operation. The optical detector 24 detects the number of spare filters 15 and displays the number on the display screen 25, allowing the staff to know the remaining number of spare filters 15 in real time, facilitating timely replenishment and avoiding the impact of insufficient spare filters 15 on the normal operation of the equipment.

[0039] Furthermore, when the positioning pin 203 is inserted into the positioning hole 204, it restricts the movement of the slider 202, keeping the filter fixed. When the filter needs to be moved for installation, the positioning pin 203 is pulled out of the positioning hole 204, releasing the lock on the slider 202 and allowing it to slide freely on the guide rail 201. The guide rail 201 provides guidance for the movement of the slider 202, ensuring the straightness and stability of the filter during movement and preventing deviation or shaking. The mounting base 205 is firmly fixed to the wall by screws and threaded holes 206, thus fixing the filter to the wall. When the filter needs to be stored, the slider 202 is pushed to the right along the guide rail 201 until it reaches the limit block 207. The limit block 207 restricts the slider 202 from sliding further. Then, the positioning pin 203 is inserted into the positioning hole 204 to fix the position of the slider 202, keeping the filter in the stored state and reducing space occupation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air filter for liquid oxygen preparation, comprising a filter box (1), characterized in that: An air inlet (3) is provided in the middle of the right side of the filter box (1). Two limiters (4) are fixedly connected to the right side of the filter box (1). Vibrators (5) are fixedly connected to the adjacent side of the two limiters (4). Permanent magnets (6) are fixedly connected to the left side of the two limiters (4). A mounting bracket (7) is fixedly connected to the right side of the inner wall of the filter box (1). Multiple springs (8) are fixedly connected to the left side of the inner wall of the mounting bracket (7). The right end of the multiple springs (8) is fixedly connected to the same push plate (9). A pressure plate is fixedly connected to the right side of the mounting bracket (7). The differential sensor (10) is fixedly connected to the bottom of the mounting bracket (7) with a square telescopic stop bar (11). An interception groove (12) is opened on the right side of the inner wall of the filter box (1). A sliding groove (13) is opened on the right side of the inner wall of the filter box (1). A main filter screen (14) is slidably connected to the inner wall of the air inlet (3). Multiple spare filter screens (15) are slidably connected to the inner wall of the sliding groove (13). A top cover (16) is rotatably connected to the top of the filter box (1). A fixing mechanism (2) is provided on the outside of the filter box (1). The fixing mechanism (2) is used to fix the filter.

2. An air filter for liquid oxygen preparation according to claim 1, characterized in that: The fixing mechanism (2) includes multiple limiting blocks (207). The left side of each of the multiple limiting blocks (207) is fixedly connected to the right side of the filter box (1). Two guide rails (201) are provided on the front and rear sides of the filter box (1). Slider blocks (202) are slidably connected to the inner walls of the multiple guide rails (201). Multiple positioning holes (204) are provided on the outer sides of the multiple sliders (202). Positioning pins (203) are slidably connected to the inner walls of adjacent positioning holes (204) on the upper and lower sides. Mounting seats (205) are fixedly connected to the left side of the multiple sliders (202). Multiple threaded holes (206) are provided on the outer sides of the multiple mounting seats (205).

3. An air filter for liquid oxygen preparation according to claim 1, characterized in that: The bottom of the filter box (1) is fixedly connected to multiple support columns (17), and each of the multiple support columns (17) is fixedly connected to a lifter (18).

4. An air filter for liquid oxygen preparation according to claim 1, characterized in that: Two rotating shafts (20) are fixedly connected to the top left side of the top cover (16), and two pins (21) are fixedly connected to the top left side of the filter box (1).

5. An air filter for liquid oxygen preparation according to claim 1, characterized in that: A handle (22) is fixedly connected to the top right side of the top cover (16), and a finger groove (23) is provided on the outer side of the handle (22).

6. An air filter for liquid oxygen preparation according to claim 1, characterized in that: An optical detector (24) is fixedly connected to the front side of the inner wall of the filter box (1), and a display screen (25) is fixedly connected to the top front side of the filter box (1).

7. An air filter for liquid oxygen preparation according to claim 1, characterized in that: The filter box (1) is fixedly connected to the bottom front side of a collection shell (26), and the bottom of the collection shell (26) is provided with multiple drainage holes (27).

8. An air filter for liquid oxygen preparation according to claim 3, characterized in that: The bottom ends of the multiple support columns (17) are fixedly connected with anti-slip sleeves (19), and the anti-slip sleeves (19) on the front and rear sides are symmetrical to each other.

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