Self-cleaning air filter for liquid oxygen and liquid nitrogen production

Abstract

The utility model relates to air filtering equipment technical field, and disclose a kind of self-cleaning air filter for liquid oxygen liquid nitrogen production, including box, filter core is movably connected in the box inner chamber, the filter core surface is provided with cleaning mechanism, the filter core top movably connected has engagement mechanism.The utility model drives main roller to drive synchronous belt circulation operation by motor, makes the shift pin push moving block reciprocating linear motion along the box side wall, drives cleaning brush to carry out comprehensive cleaning to filter core surface, and this design compared with traditional cleaning mode, it can cover larger cleaning area, effectively remove dust and impurities on filter core surface, restore the filtering performance of filter core, ensure that filter long-term stable operation, reduce the problem of the decline of filtering efficiency due to filter core blockage, and moving block and cleaning brush connection mode, so that cleaning brush appears abrasion after long-term use, operating personnel can quickly remove it from moving block, and install new cleaning brush.

Description

Technical Field

[0001] This utility model relates to the field of air filtration equipment technology, and in particular to a self-cleaning air filter for liquid oxygen and liquid nitrogen production. Background Technology

[0002] With the rapid development of modern industry, liquid oxygen and liquid nitrogen are increasingly widely used in aerospace, medical, metal processing and many other fields. Their production scale and quality requirements are also constantly improving. In the industrial production process of liquid oxygen and liquid nitrogen, air is used as a raw material. Its cleanliness directly determines the quality of the product and the production efficiency. Dust, particulate matter, water vapor and various chemical impurities contained in the air will not only affect the stability of subsequent core processes such as cryogenic distillation, but may also cause blockage of internal pipes and wear of valves in production equipment, and even cause safety hazards.

[0003] However, air filters currently on the market still have many problems. First, in terms of cleaning and maintenance, traditional cleaning methods mostly rely on manual disassembly of the filter media for cleaning. This is not only cumbersome and consumes a lot of manpower and time, but frequent disassembly can also easily damage the filter media and shorten the service life of the equipment. Second, the installation structure of the filter media mostly adopts bolt fixing or snap-fit ​​nesting, which has problems such as inconvenient installation and disassembly and time-consuming replacement, making it difficult to meet the continuous and efficient operation requirements of liquid oxygen and liquid nitrogen production.

[0004] Therefore, those skilled in the art have provided a self-cleaning air filter for liquid oxygen and liquid nitrogen production to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the issues of manual cleaning and difficult installation / removal of filter media in traditional air filters used for liquid oxygen and liquid nitrogen production, this invention provides a self-cleaning air filter for liquid oxygen and liquid nitrogen production, employing the following technical solution:

[0006] A self-cleaning air filter for liquid oxygen and liquid nitrogen production includes a housing. A filter element is movably connected to the inner cavity of the housing. A cleaning mechanism is provided on the surface of the filter element. A locking mechanism is movably connected to the top of the filter element. The cleaning mechanism includes a housing. One side of the housing is fixedly connected to the housing. A motor is fixedly connected to one side of the inner cavity of the housing. The output end of the motor passes through the surface of the housing and is fixedly connected to a main rotating roller. A synchronous belt is movably connected to the surface of the main rotating roller. A secondary rotating roller is movably connected to the bottom inner side of the synchronous belt. One side of the secondary rotating roller is rotatably connected to the housing. A pin is fixedly connected to one side of the synchronous belt. A moving block is slidably connected to the front side of the pin. Both sides of the moving block are slidably connected to the housing. A cleaning brush is bolted to the front side of the moving block.

[0007] Optionally, the locking mechanism includes a mounting plate, the top of which is fixedly connected to the housing, a rod slidably connected to one side of the mounting plate, a slot opened on the top of the filter element, one side of the rod slidably connected to the slot, a connecting plate fixedly connected to the other side of the rod, a fixing rod provided on one side of the rod, one side of the fixing rod fixedly connected to the mounting plate, the other side of the fixing rod fixedly connected to the housing, the surface of the fixing rod slidably connected to the connecting plate, a spring provided on one side of the connecting plate, and the other side of the spring fixedly connected to the housing.

[0008] Optionally, a guide plate is provided on the top of the filter element, and the rear side of the guide plate is fixedly connected to the housing.

[0009] Optionally, a baffle is provided on one side of the guide plate, and the top of the baffle is slidably connected to the housing.

[0010] Optionally, sliders are fixedly connected to both sides of the movable block, and sliding grooves are provided on both sides of the inner cavity of the box, with one side of the slider slidably connected to the sliding groove.

[0011] Optionally, a pull plate is provided on one side of the spring, and one side of the pull plate is fixedly connected to the connecting plate.

[0012] Optionally, a friction pad is provided on the top inner side of the synchronous belt, and the inner side of the friction pad is fixedly connected to the main roller.

[0013] Optionally, positioning rods are fixedly connected to both sides of the top of the filter element, and positioning grooves are opened on both sides of the top of the inner cavity of the box. The top of the positioning rods is slidably connected to the positioning grooves.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. This utility model uses a motor-driven main rotating roller to drive a synchronous belt in a cyclical motion, causing a pin to push a moving block to reciprocate linearly along the side wall of the housing. This, in turn, drives a cleaning brush to thoroughly clean the surface of the filter element. Compared with traditional cleaning methods, this design can cover a larger cleaning area, effectively remove dust and impurities from the surface of the filter element, restore the filtration performance of the filter element, ensure long-term stable operation of the filter, and reduce the problem of decreased filtration efficiency caused by filter element clogging. The connection between the moving block and the cleaning brush allows the operator to quickly remove the cleaning brush from the moving block and install a new cleaning brush after the cleaning brush wears out due to long-term use.

[0016] 2. This utility model allows for quick insertion or removal of the filter element into or out of the space between two mounting plates by pulling the connecting plate to compress the spring, causing the connecting plate to disengage the insertion rod from the slot. After releasing the connecting plate, the spring automatically resets and pushes the insertion rod to precisely engage with the slot. The filter element can be installed and fixed without the use of tools. In the production of liquid oxygen and liquid nitrogen, the filter element needs to be inspected and replaced regularly. This operation method significantly shortens the filter element replacement time, significantly improves equipment maintenance efficiency, and reduces the production interruption time caused by filter element replacement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the cleaning mechanism of this utility model.

[0019] Figure 3 This is a schematic diagram of the locking mechanism of this utility model.

[0020] Figure 4 This is an enlarged view of section A of this utility model.

[0021] Figure 5 This is an enlarged view of section B of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Housing; 2. Filter element; 3. Cleaning mechanism; 301. Housing; 302. Motor; 303. Main roller; 304. Synchronous belt; 305. Auxiliary roller; 306. Pin; 307. Moving block; 308. Cleaning brush; 4. Engaging mechanism; 401. Mounting plate; 402. Insert rod; 403. Slot; 404. Connecting plate; 405. Fixing rod; 406. Spring; 5. Guide plate; 6. Baffle; 7. Slider; 8. Slide groove; 9. Pull plate; 10. Friction pad; 11. Positioning rod; 12. Positioning groove. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] Example 1:

[0026] Please refer to Figure 1-5A self-cleaning air filter for liquid oxygen and liquid nitrogen production includes a housing 1. A filter element 2 is movably connected to the inner cavity of the housing 1. A cleaning mechanism 3 is provided on the surface of the filter element 2. A locking mechanism 4 is movably connected to the top of the filter element 2. The cleaning mechanism 3 includes a housing 301. One side of the housing 301 is fixedly connected to the housing 1. A motor 302 is fixedly connected to one side of the inner cavity of the housing 301. The output end of the motor 302 passes through the surface of the housing 1 and is fixedly connected to a main rotating roller 303. A synchronous belt 304 is movably connected to the surface of the main rotating roller 303. A secondary rotating roller 305 is movably connected to the bottom of the inner side of the synchronous belt 304. One side of the secondary rotating roller 305 is rotatably connected to the housing 1. A pin 306 is fixedly connected to one side of the synchronous belt 304. A moving block 307 is slidably connected to the front side of the pin 306. Both sides of the moving block 307 are slidably connected to the housing 1. A cleaning brush 308 is bolted to the front side of the moving block 307.

[0027] In this embodiment: there are two filter elements 2, which can form a multi-stage filtration structure. An air inlet pipe is fixedly connected to one side of the housing 1, and an air outlet pipe is fixedly connected to the other side. Both the air outlet pipe and the air inlet pipe are fixedly connected to flanges on the other side. The filter can be quickly connected to the air inlet and air outlet pipes of the liquid oxygen and liquid nitrogen production system by bolting the flanges. A movable door is hinged to the front of the housing 1 to facilitate the maintenance or replacement of the internal devices of the housing 1 by the staff. The housing 301 can provide all-round protection for the motor 302.

[0028] Example 2:

[0029] Reference Figure 1-5 The locking mechanism 4 includes a mounting plate 401, the top of which is fixedly connected to the housing 1. A rod 402 is slidably connected to one side of the mounting plate 401. A slot 403 is provided on the top of the filter element 2. One side of the rod 402 is slidably connected to the slot 403. A connecting plate 404 is fixedly connected to the other side of the rod 402. A fixing rod 405 is provided on one side of the rod 402. One side of the fixing rod 405 is fixedly connected to the mounting plate 401, and the other side is fixedly connected to the housing 1. The surface of the fixing rod 405 is slidably connected to the connecting plate 404. A spring 406 is provided on one side of the connecting plate 404, and the other side of the spring 406 is fixedly connected to the housing 1. The top of the filter element 2 is provided with... There is a guide plate 5, which is fixedly connected to the rear side of the housing 1. A baffle 6 is provided on one side of the guide plate 5, and the top of the baffle 6 is slidably connected to the housing 1. Slider 7 is fixedly connected to both sides of the moving block 307. Slide grooves 8 are provided on both sides of the inner cavity of the housing 1. One side of the slider 7 is slidably connected to the slide groove 8. A pull plate 9 is provided on one side of the spring 406, and one side of the pull plate 9 is fixedly connected to the connecting plate 404. A friction pad 10 is provided on the top of the inner side of the synchronous belt 304, and the inner side of the friction pad 10 is fixedly connected to the main rotating roller 303. Positioning rods 11 are fixedly connected to both sides of the top of the filter element 2. Positioning grooves 12 are provided on both sides of the top of the inner cavity of the housing 1, and the top of the positioning rods 11 is slidably connected to the positioning grooves 12.

[0030] In this embodiment: there are two sets of mounting plates 401, each corresponding to one of the two filter elements 2, which can limit the lateral movement range of the filter element 2. There are multiple insertion rods 402 and slots 403, which are arranged in an array. Compared with the single-point or small number of insertion rods 402, it can provide a more uniform and stronger constraint force. The guide plate 5 is inclined, which can guide the impurities falling on the filter element 2 to one side of the baffle 6. The operator can collect the impurities on the guide plate 5 by sliding the baffle 6. There are two sliders 7 and two chute 8, which can limit the movement range and operation mode of the moving block 307. The pull plate 9 can provide the operator with a convenient force application point. The friction pad 10 can increase the friction between the main roller 303 and the synchronous belt 304 and reduce the slippage of the synchronous belt 304. The positioning groove 12 and the positioning rod 11 provide clear guidance and positioning benchmark for the installation of the filter element 2.

[0031] The implementation principle of this utility model is as follows: During installation, pull the pull plate 9, which causes the connecting plate 404 to move along the fixing rod 405 and compress the spring 406. The insertion rod 402 moves with the connecting plate 404 and disengages from the mounting plate 401. Then, the positioning rod 11 at the top of the filter element 2 is aligned with the positioning groove 12 at the top of the inner cavity of the housing 1 and inserted. After releasing the pull plate 9, the spring 406 extends, causing the connecting plate 404 to reset. The insertion rod 402 resets with the connecting plate 404 and enters the slot 403 to fix the filter plate position. When it is time to clean the filter element 2, the motor 302 starts and drives the main rotating roller 303 to rotate. The main rotating roller 303 drives the synchronous belt 304 to rotate. The synchronous belt 304 drives the auxiliary rotating roller 305 and the pin 306 to rotate. The pin 306 drives the moving block 307 to move up and down. The cleaning brush 308 moves with the moving block 307 and sweeps away the impurities on the filter element 2. The falling impurities are guided to one side of the baffle 6 through the guide plate 5. The staff then removes the impurities on the guide plate 5 through the sliding baffle 6.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A self-cleaning air filter for liquid oxygen and liquid nitrogen production, comprising a housing (1), characterized in that: The inner cavity of the housing (1) is movably connected to a filter element (2), a cleaning mechanism (3) is provided on the surface of the filter element (2), and a locking mechanism (4) is movably connected to the top of the filter element (2); The cleaning mechanism (3) includes a housing (301), one side of which is fixedly connected to the box (1). A motor (302) is fixedly connected to one side of the inner cavity of the housing (301). The output end of the motor (302) passes through the surface of the box (1) and is fixedly connected to a main rotating roller (303). A synchronous belt (304) is movably connected to the surface of the main rotating roller (303). A secondary rotating roller (305) is movably connected to the bottom of the inner side of the synchronous belt (304). One side of the secondary rotating roller (305) is rotatably connected to the box (1). A pin (306) is fixedly connected to one side of the synchronous belt (304). A moving block (307) is slidably connected to the front side of the pin (306). Both sides of the moving block (307) are slidably connected to the box (1). A cleaning brush (308) is bolted to the front side of the moving block (307).

2. The self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 1, characterized in that: The locking mechanism (4) includes a mounting plate (401), the top of which is fixedly connected to the housing (1). A rod (402) is slidably connected to one side of the mounting plate (401). A slot (403) is provided on the top of the filter element (2). One side of the rod (402) is slidably connected to the slot (403). A connecting plate (404) is fixedly connected to the other side of the rod (402). A fixing rod (405) is provided on one side of the rod (402). One side of the fixing rod (405) is fixedly connected to the mounting plate (401). The other side of the fixing rod (405) is fixedly connected to the housing (1). The surface of the fixing rod (405) is slidably connected to the connecting plate (404). A spring (406) is provided on one side of the connecting plate (404). The other side of the spring (406) is fixedly connected to the housing (1).

3. The self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 1, characterized in that: The filter element (2) is provided with a guide plate (5) on the top, and the rear side of the guide plate (5) is fixedly connected to the housing (1).

4. A self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 3, characterized in that: A baffle (6) is provided on one side of the guide plate (5), and the top of the baffle (6) is slidably connected to the box body (1).

5. A self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 1, characterized in that: The movable block (307) is fixedly connected to sliders (7) on both sides, and the inner cavity of the box (1) is provided with grooves (8) on both sides. One side of the slider (7) is slidably connected to the groove (8).

6. A self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 2, characterized in that: A pull plate (9) is provided on one side of the spring (406), and one side of the pull plate (9) is fixedly connected to the connecting plate (404).

7. A self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 1, characterized in that: A friction pad (10) is provided on the top inner side of the synchronous belt (304), and the inner side of the friction pad (10) is fixedly connected to the main roller (303).

8. A self-cleaning air filter for liquid oxygen and liquid nitrogen production according to claim 1, characterized in that: The filter element (2) is fixedly connected to both sides of the top with positioning rods (11), and the inner cavity of the box (1) is provided with positioning grooves (12) on both sides of the top. The top of the positioning rods (11) is slidably connected to the positioning grooves (12).

Images