A tubular oil screen dust filter for civil air defense engineering

Abstract

The application discloses a tubular oil net dust filter for civil air defense projects and relates to the technical field of civil air defense projects.The tubular oil net dust filter for civil air defense projects comprises a dust filter body, a butt joint block is fixedly connected to the inside of the dust filter body, two groups of the butt joint blocks are connected with filter core bodies in the inside, the outside of the filter core bodies is fixedly connected with handles, and so on.The tubular oil net dust filter for civil air defense projects can make the second magnetic block and the first magnetic block mutually adsorb when the temperature in the inside of the dust filter body is high, can make the second magnetic block and the first magnetic block mutually adsorb when the temperature in the inside of the dust filter body returns to normal, and can make the first magnetic block drive the moving plate to move synchronously so as to not shield the standby through slot arranged on the filter core body, air can enter the inside of the standby through slot, and filtering is carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil air defense engineering, in particular to a tubular oil screen dust filter for civil air defense engineering. BACKGROUND

[0002] In civil air defense engineering, the requirements for oil mist and dust are high, and a tubular oil screen dust filter needs to be used for filtration. The oil mist and dust in the air are adhered by multiple layers of hanging oil wire mesh, which is used for purifying air containing oil stains.

[0003] The prior art one (Chinese patent with publication number CN219663168U and publication date of September 12, 2023) is a tubular oil screen dust filter convenient to maintain, which relates to the technical field of civil air defense engineering and comprises a shell. Four side walls of the shell are each connected with a movable frame through pulling. An oil filter screen is installed on the inner side of the movable frame. A clamping groove is formed in the top and bottom of the movable frame. A clamping buckle assembly is fixedly arranged in one side wall of the shell and is clamped with the clamping groove. The movable frame is triangular and is inserted into a fixing groove formed in the side wall of the fixing frame. The fixing frame is cross-shaped and is fixedly connected in the shell. An oil supplement assembly is also installed in the shell. This tubular oil screen dust filter convenient to maintain is different from the prior art. The oil filter screen is divided into four parts, each of which is movable. After the fixing of the movable frame is removed, the oil filter screen can be replaced. Only the damaged part of the oil filter screen needs to be replaced, which greatly reduces the replacement cost. The spray head can perform comprehensive oil supplement work on the oil filter screen, avoiding the problem that the oil filter screen cannot meet the filtering requirements when the oil amount on the oil filter screen is small. The prior art two (Chinese patent with publication number CN215505700U and publication date of January 14, 2022) is a new type of civil air defense tubular oil screen dust filter, which comprises a shell. An installation frame is welded to the side of the shell. A connecting rod is movably connected to the upper and lower sides of the installation frame. A sliding plate is movably connected to the other side of the connecting rod. A spring column is slidably connected to the inside of the sliding plate, which can effectively reduce the impact force, avoid deformation of the shell caused by impact, and protect the impact person, thereby improving the service life of the dust filter. Fixed frames are welded to the left and right sides of the inner wall of the shell. An oil screen is arranged in the fixed frame. Fixed plates are welded to the left and right sides of the oil screen. A rotary button is arranged at the bottom of the fixed frame. A threaded rod is screwedly connected to the inside of the threaded pipe. A clamping plate is welded to the bottom of the threaded rod. The clamping plate is clamped with the fixed plate. The installation and disassembly of the oil screen are more convenient, which greatly improves the work efficiency during maintenance.

[0004] Although the dust filter in the prior art can make the installation and disassembly of the oil screen more convenient and improve the work efficiency during maintenance, the oil screen in the dust filter cannot be preliminarily cleaned when it is blocked. During the period from the blocking of the oil screen to the replacement of the oil screen by the staff, the dust filtering efficiency of the dust filter will be reduced, which cannot meet the required dust filtering effect.

[0005] Therefore, we propose a tubular oil mesh dust filter for civil defense projects to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a tubular oil mesh dust filter for civil defense projects, in order to solve the problem mentioned in the background art that the dust filters currently on the market cannot clean themselves after the internal oil mesh becomes clogged. During the time between the oil mesh becoming clogged and the staff replacing it, the dust filtration efficiency of the dust filter will decrease, and it will not be able to meet the required dust filtration effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tubular oil filter for civil defense engineering, comprising a filter body, wherein a connecting block is fixedly connected inside the filter body, and a filter element body is nested inside the two sets of connecting blocks, and a handle is fixedly connected to the outside of the filter element body. The filter element body is provided with a main filter groove and a spare filter groove, and a movable plate is provided inside the filter body to cover the spare filter groove. An air supply groove is provided on the movable plate, and an adjustment mechanism is provided between the end of the movable plate and the filter body. The adjustment mechanism drives the adjustment plate to move by the deformation of the shape memory alloy included therein, thereby enabling the device to filter better.

[0008] Preferably, the side of the docking block is fixedly connected to a limiting plate, and the limiting plate has a sliding groove inside, and a fixed plate is nested inside the sliding groove. At the same time, the three sets of moving plates are fixedly connected through the fixed plate, and the sides of the two sets of fixed plates below are fixedly connected to side plates.

[0009] Preferably, the adjustment mechanism includes a heat-conducting plate, which is fixedly connected to the housing of the dust filter body. The outer side of the heat-conducting plate is fixedly connected to the shape memory alloy, and an auxiliary plate is fixedly connected to the outer side of the shape memory alloy. An adjustment plate is fixedly connected between the upper and lower auxiliary plates, and a connecting rod is fixedly connected to the inner side of the adjustment plate. A second magnetic block is fixedly connected to the end of the connecting rod. A first magnetic block is fixedly connected to the side of the side plate, and a sleeve is fixedly connected to the side of the dust filter body. The connecting rod is nested inside the sleeve.

[0010] Preferably, the first and second magnetic blocks have opposite magnetic properties, the shape memory alloy is arranged in an unfolded tortuous structure when it is not deformed, and the second magnetic block is nested inside the sleeve.

[0011] Preferably, the area of ​​the air supply channel is larger than the area of ​​the spare channel, the fixed plate forms a sliding structure with the sliding groove through the moving plate, and the connecting rod forms a sliding structure with the sleeve through the adjusting plate.

[0012] Preferably, an air bladder is fixedly connected between the inner side of the adjusting plate and the outer side of the dust filter body, and a one-way air inlet valve is provided on the outer side of the air bladder. A ventilation pipe is provided through the inner side of the air bladder and extends through to the inner side of the dust filter body. A one-way air outlet valve is provided at the end of the ventilation pipe.

[0013] Preferably, the one-way air outlet valve is located on the front side of the filter element body, and the one-way air outlet valves are arranged vertically at equal intervals.

[0014] Preferably, the mesh surface of the filter body is made of deformable metal, and two sets of auxiliary plates are symmetrically arranged below the center point of the adjustment plate. The inner side of the adjustment plate on the rear side is fixedly connected to a slide rod, which is nested and connected to the inner side of the dust filter body. Adjustment magnets are evenly distributed on the slide rod.

[0015] Preferably, the metal mesh surface of the filter element body can undergo elastic deformation by adjusting the magnet, and the slide rod forms a sliding structure with the dust collector body through the auxiliary plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] When assembling the filter element, the operator can hold the handle and align the filter element with the two sets of connecting blocks inside the dust collector. The connecting blocks limit the position of the filter element. The operator can then use the threads to fix the outer side of the filter element to the dust collector, thus quickly completing the assembly of the filter element. The gas being transported can enter the interior of the filter element through the main channel. The gas carrying dust can pass through the multi-layer oil-coated metal wire mesh inside the filter element to adhere to the oil mist and dust in the air, thereby achieving filtration.

[0018] When a large amount of dust adheres to the oil-coated metal wire mesh inside the filter element, the internal temperature of the filter element rises. This heat-conducting plate can transfer the increased temperature inside the filter element to the shape memory alloy. The shape memory alloy senses the temperature change and deforms and folds. During the deformation process, the shape memory alloy, driven by the auxiliary plate, synchronously moves the adjusting plate to one side of the filter element. At this time, the adjusting plate will squeeze the air bag, causing the gas inside the air bag to be sprayed out to one side of the filter element through the one-way air outlet valve, thereby removing the impurities adhering to the filter element and reducing dust blockage.

[0019] As the adjusting plate moves under the influence of the shape memory alloy, the slide bar slides along the filter body. At this time, the adjusting magnet can indirectly attract the metal mesh surface of the filter body, causing the metal mesh surface of the filter body to vibrate. This further shakes off the impurities adhering to the metal mesh. Through the cooperation of the airbag and the adjusting magnet, the degree of clogging of the filter body can be reduced, allowing air to pass through the filter body smoothly. This further reduces the internal temperature of the dust filter body and restores it to a normal state.

[0020] When the temperature inside the dust filter body rises, the adjusting plate will synchronously drive the connecting rod to move along the sleeve, thereby causing the connecting rod to synchronously drive the second magnetic block to move until the second magnetic block and the first magnetic block attract each other. When the temperature inside the dust filter body returns to normal, the connecting rod moves outward under the action of the adjusting plate to reset. Since the second magnetic block and the first magnetic block attract each other at this time, the first magnetic block will synchronously drive the moving plate to move under the action of the second magnetic block, so as not to block the spare passage groove set on the filter body. At this time, air can enter from the spare passage groove and be filtered.

[0021] By setting up two sets of filtration channels, an auxiliary channel is provided for gas filtration, thereby reducing the possibility of reduced overall filtration effect due to low filtration efficiency caused by blockage of the main filter channel. Attached Figure Description

[0022] Figure 1 This is a three-dimensional front view schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional rear view structure of the present invention;

[0024] Figure 3 This is a frontal sectional view of the three-dimensional structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the filter element body of the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the movable plate of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the connecting rod of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure when the positions of the air supply channel and the spare channel correspond;

[0029] Figure 8 This is a rear-section three-dimensional structural schematic diagram of the present invention;

[0030] Figure 9This is a schematic diagram of the undeformed shape memory alloy structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the shape memory alloy structure after deformation according to the present invention.

[0032] In the diagram: 1. Dust filter body; 2. Filter element body; 3. Connecting block; 4. Handle; 5. Main channel of filter element; 6. Airbag; 7. One-way air inlet valve; 8. One-way air outlet valve; 9. Auxiliary plate; 10. Adjusting plate; 11. Moving plate; 12. Air supply channel; 13. Side plate; 14. Spare channel; 15. Limiting plate; 16. Fixing plate; 17. Slide groove; 18. First magnetic block; 19. Second magnetic block; 20. Shape memory alloy; 21. Heat-conducting plate; 22. Sleeve; 23. Connecting rod; 24. Slide rod; 25. Adjusting magnet. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: As Figure 1 and Figure 2 The present invention provides the following technical solution: a tubular oil mesh dust filter for civil defense engineering, which discloses a filter element body 2. The filter element body 2 is equipped with a multi-layer oil-coated metal wire mesh to adhere oil mist and dust in the air, thereby achieving filtration. The filter element body 1 is fixedly connected to a docking block 3, and the filter element body 2 is nested inside the two sets of docking blocks 3. The filter element body 2 is fixedly connected to the outside of the filter element body 2. The docking block 3 is fixedly connected to a limiting plate 15 on its side. The limiting plate 15 is provided with a sliding groove 17 inside. The sliding groove 17 is nested inside a fixing plate 16. At the same time, three sets of moving plates 11 are fixedly connected through the fixing plate 16. The two sets of fixing plates 16 are fixedly connected to the sides of the bottom. Side plates 13 are fixedly connected to the sides of the bottom.

[0035] When assembling the filter element body 2, the operator can hold the handle 4 to align the filter element body 2 with the two sets of connecting blocks 3 inside the dust filter body 1. The connecting blocks 3 can limit the position of the filter element body 2. At this time, the operator can fix the outer side of the filter element body 2 with the dust filter body 1 through the threads, thereby quickly completing the assembly of the filter element body 2. The conveyed gas can enter the interior of the filter element body 2 through the filter element main channel 5. The gas carrying dust can adhere to the oil mist and dust in the air through the multi-layer oil-coated metal wire mesh set inside the filter element body 2, thereby achieving filtration.

[0036] Example 2: Figure 3 , Figure 5 , Figure 8 , Figure 9 and Figure 10 The present invention provides the following technical solution: a tubular oil mesh dust filter for civil defense engineering, which discloses an adjustment mechanism to remove impurities adhering to the filter element body 2 and reduce dust blockage. The filter element body 2 is provided with a main filter groove 5 and a spare filter groove 14. A movable plate 11 is provided inside the dust filter body 1 to cover the spare filter groove 14. An air supply groove 12 is provided on the movable plate 11. An adjustment mechanism is provided between the end of the movable plate 11 and the dust filter body 1. The adjustment mechanism moves the adjustment plate 10 by the deformation of the shape memory alloy 20 it includes, thereby enabling better filtration. The adjustment mechanism includes a heat-conducting plate 21, which is fixedly connected to the shell of the dust filter body 1. The outer side of the heat-conducting plate 21 is fixedly connected to the shape memory alloy 20, and an auxiliary plate 9 is fixedly connected to the outer side of the shape memory alloy 20. Two sets of auxiliary plates 9 are provided. An adjusting plate 10 is fixedly connected between the two sides. An air bag 6 is fixedly connected between the inner side of the adjusting plate 10 and the outer side of the filter body 1. A one-way air inlet valve 7 is provided on the outer side of the air bag 6. An air duct is provided through the inner side of the air bag 6 and extends through to the inner side of the filter body 1. A one-way air outlet valve 8 is provided at the end of the air duct. The one-way air outlet valve 8 is located on the front side of the filter body 2 and is arranged vertically at equal intervals. The mesh surface of the filter body 2 is made of deformable metal. Two sets of auxiliary plates 9 are symmetrically arranged below the center point of the adjusting plate 10. A sliding rod 24 is fixedly connected to the inner side of the adjusting plate 10 on the rear side. The sliding rod 24 is nested and connected to the inner side of the filter body 1. Adjusting magnets 25 are evenly distributed on the sliding rod 24. The metal mesh surface of the filter body 2 can undergo elastic deformation through the adjusting magnets 25. The sliding rod 24 forms a sliding structure with the filter body 1 through the auxiliary plate 9.

[0037] When a large amount of dust adheres to the oil-coated metal wire mesh inside the filter element body 2, the filter element body 2 becomes clogged, reducing the effective cross-sectional area for gas flow and forcing the fluid velocity to increase. According to Bernoulli's equation, the increased velocity leads to an increase in dynamic pressure. Simultaneously, the static pressure inside the dust collector increases due to the obstructed flow. When the gas passes through the clogged area, it experiences intense turbulence due to the narrow channel, intensifying intermolecular collisions and friction, converting kinetic energy into heat energy, thus raising the internal temperature of the dust collector body 1. The heat-conducting plate 21 can transfer the increased temperature inside the dust collector body 1 to the shape memory alloy 20. The shape memory alloy 20 senses the temperature change and deforms and folds. During the deformation process, the shape memory alloy 20, driven by the auxiliary plate 9, synchronously moves the adjusting plate 10 to one side of the dust collector body 1. At this time, the adjusting plate 10 squeezes the air bag 6, causing the air inside the air bag 6 to... The air body is sprayed out to one side of the filter body 2 through the one-way exhaust valve 8, thereby removing impurities adhering to the filter body 2 and reducing dust blockage. When the adjusting plate 10 moves under the action of the shape memory alloy 20, it can simultaneously drive the slide rod 24 to slide along the dust filter body 1 through the auxiliary plate 9 on the other side. At this time, the adjusting magnets 25, which are equally spaced on the slide rod 24, move synchronously with the movement of the slide rod 24. The adjusting magnets 25 can indirectly attract the metal mesh surface of the filter body 2, thereby causing the metal mesh surface of the filter body 2 to vibrate, further shaking off the impurities adhering to the metal mesh. Through the cooperation of the air bag 6 and the adjusting magnets 25, the degree of blockage of the filter body 2 can be reduced, so that air can pass through the filter body 2 smoothly, thereby further reducing the internal temperature of the dust filter body 1 and restoring it to a normal state.

[0038] Example 3: Figures 1-5 The present invention provides the following technical solution: a tubular oil filter for civil defense engineering, which discloses a spare channel 14. By setting two sets of filtration channels, an auxiliary channel can be provided for gas filtration, thereby reducing the possibility of reduced overall filtration effect due to low filtration efficiency caused by blockage of the main channel 5 of the filter element. A connecting rod 23 is fixedly connected to the inner side of the adjusting plate 10, and a second magnetic block 19 is fixedly connected to the end side of the connecting rod 23. A first magnetic block 19 is fixedly connected to the side side of the side plate 13. Block 18, a sleeve 22 is fixedly connected to the side of the dust filter body 1, and a connecting rod 23 is nested inside the sleeve 22. The first magnetic block 18 and the second magnetic block 19 have opposite magnetic properties. The shape memory alloy 20 is arranged in an unfolded zigzag structure when it is not deformed. The second magnetic block 19 is nested inside the sleeve 22. The area of ​​the air supply channel 12 is larger than the area of ​​the spare channel 14. The fixed plate 16 forms a sliding structure with the sliding groove 17 through the moving plate 11. The connecting rod 23 forms a sliding structure with the sleeve 22 through the adjusting plate 10.

[0039] When the temperature inside the dust filter body 1 rises, the regulating plate 10 will synchronously drive the connecting rod 23 to move along the sleeve 22, thereby causing the connecting rod 23 to synchronously drive the second magnetic block 19 to move until the second magnetic block 19 and the first magnetic block 18 are attracted to each other. When the temperature inside the dust filter body 1 returns to normal, the connecting rod 23 moves outward under the action of the regulating plate 10 to reset. Since the second magnetic block 19 and the first magnetic block 18 are attracted to each other at this time, the first magnetic block 18 will synchronously drive the moving plate 11 to move under the action of the second magnetic block 19, so as not to block the spare passage 14 set on the filter body 2. At this time, air can enter from the spare passage 14 and be filtered, reducing the possibility of low filtration efficiency and reduced overall filtration effect due to blockage of the main passage 5 of the filter element.

[0040] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A tubular oil filter for civil defense engineering, comprising a filter body (1), wherein a connecting block (3) is fixedly connected inside the filter body (1), and a filter element body (2) is nested inside the two sets of connecting blocks (3), and a handle (4) is fixedly connected to the outside of the filter element body (2), characterized in that, The filter core body (2) is provided with a filter core main through slot (5) and a standby through slot (14), the inside of the dust filter body (1) is provided with a moving plate (11) capable of shielding the standby through slot (14), the moving plate (11) is provided with a gas through slot (12), and the end side of the moving plate (11) and the dust filter body (1) are provided with an adjusting mechanism, the adjusting mechanism drives the adjusting plate (10) to move through the deformation of the included memory alloy (20); The side of the butt joint block (3) is fixedly connected with a limiting plate (15), the inside of the limiting plate (15) is provided with a sliding groove (17), the inside of the sliding groove (17) is nested with a fixed plate (16), and the three groups of moving plates (11) are fixedly connected through the fixed plate (16). The side of the downward two groups of fixed plates (16) is fixedly connected with a side plate (13), the adjusting mechanism comprises a heat conduction plate (21), the heat conduction plate (21) is fixedly connected to the shell of the dust filter body (1), the outside of the heat conduction plate (21) is fixedly connected with the memory alloy (20), the outside of the memory alloy (20) is fixedly connected with an auxiliary plate (9), the upper and lower two groups of auxiliary plates (9) are fixedly connected with the adjusting plate (10), the inside of the adjusting plate (10) is fixedly connected with a connecting rod (23), the end side of the connecting rod (23) is fixedly connected with a second magnetic block (19), the side of the side plate (13) is fixedly connected with a first magnetic block (18), the side of the dust filter body (1) is fixedly connected with a sleeve (22), and the connecting rod (23) is nested in the inside of the sleeve (22).

2. The tubular oil mist dust filter for civil defense projects according to claim 1, characterized in that: The first magnetic block (18) and the second magnetic block (19) are magnetically opposite, the memory alloy (20) is in an unfolded and zigzag structure when not deformed, and the second magnetic block (19) is nested in the inside of the sleeve (22).

3. The tubular oil mist dust filter for civil defense projects according to claim 2, characterized in that: The area of the gas through slot (12) is greater than that of the standby through slot (14), the fixed plate (16) and the sliding groove (17) constitute a sliding structure through the moving plate (11), and the connecting rod (23) and the sleeve (22) constitute a sliding structure through the adjusting plate (10).

4. The tubular oil mist dust filter for civil defense projects according to claim 3, characterized in that: The inside of the adjusting plate (10) and the outside of the dust filter body (1) are fixedly connected with an air bag (6), the outside of the air bag (6) is provided with a one-way air inlet valve (7), the inside of the air bag (6) is provided with an air passage, the air passage penetrates into the inside of the dust filter body (1), and the end of the air passage is provided with a one-way air outlet valve (8).

5. The tubular oil mist dust filter for civil defense projects according to claim 4, characterized in that: The one-way air outlet valve (8) is arranged on the front side of the filter core body (2), and the one-way air outlet valve (8) is vertically and equidistantly arranged.

6. The tubular oil mist dust filter for civil defense projects according to claim 5, characterized in that: The mesh surface of the filter core body (2) is made of a deformable metal material, two groups of the auxiliary plates (9) are symmetrically arranged about the center point of the adjusting plate (10), the inside of the adjusting plate (10) arranged on the rear side is fixedly connected with a sliding rod (24), the sliding rod (24) is nested into the inside of the dust filter body (1), and the sliding rod (24) is equidistantly provided with adjusting magnets (25).

7. The tubular oil mist dust filter for civil defense according to claim 6, characterized in that: The metal screen surface of the filter core body (2) can be elastically deformed by adjusting the magnet (25), and the slide rod (24) and the dust filter body (1) form a sliding structure through the auxiliary plate (9).

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