Tubular oil screen dust filter for civil air defense engineering

Abstract

The invention discloses a tubular oil screen dust filter for civil air defense engineering, and relates to the technical field of civil air defense engineering, the tubular oil screen dust filter comprises a dust filter body, the interior of the dust filter body is fixedly connected with butt joint blocks, the inner sides of the two butt joint blocks are connected with a filter element body in a nested manner, and the outer side of the filter element body is fixedly connected with a handle. According to the tubular oil screen dust filter for the civil air defense engineering, when the temperature in the dust filter body is high, an adjusting plate can synchronously drive a connecting rod to move along a sleeve, so that a second magnetic block and a first magnetic block are attracted to each other, and when the temperature in the dust filter body returns to normal, the adjusting plate can synchronously drive the connecting rod to move along the sleeve; a connecting rod is driven by an adjusting plate to move outwards for resetting, a second magnetic block and a first magnetic block attract each other at the moment, and the first magnetic block can synchronously drive a moving plate to move under the driving action of the second magnetic block, so that a standby through groove formed in the filter element body is not shielded, and at the moment, air can enter the standby through groove; and filtering is carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of civil air defense engineering, and specifically relates to a tubular oil mesh dust filter for civil air defense engineering. Background Art

[0002] In civil air defense engineering, there are high requirements for oil mist and dust, and a tubular oil mesh dust filter needs to be used for filtration. The oil mist and dust in the air are adhered by multiple layers of oil-coated metal wire meshes to purify the air containing oil stains.

[0003] The prior art one (a Chinese patent with the publication number CN219663168U and the publication date of September 12, 2023) is a tubular oil mesh dust filter that is easy to maintain, which relates to the technical field of civil air defense engineering. It includes a housing. Movable frames are slidably connected to the four side walls of the housing. Oil filter meshes are installed inside the movable frames. Slots are opened at the top and bottom of the movable frames. A snap component that is engaged with the slots is fixedly arranged inside a side wall of the housing. The movable frames are triangular and are inserted into fixing slots opened on the side walls of a fixing frame. The fixing frame is cross-shaped and is fixedly connected inside the housing. A supplementary oil component is also installed inside the housing. This tubular oil mesh dust filter that is easy to maintain is different from the prior art. By dividing the oil filter mesh into four parts, each part is movable. After releasing the fixation of the movable frame, the oil filter mesh can be replaced, and only the damaged part of the oil filter mesh needs to be replaced, greatly reducing the replacement cost. The nozzle can perform a comprehensive oil supplement work on the oil filter mesh to avoid the problem that the filtration requirement cannot be met when the amount of oil on the oil filter mesh is small. There is also the prior art two (a Chinese patent with the publication number CN215505700U and the publication date of January 14, 2022), a new type of civil air defense tubular oil mesh dust filter, which includes a housing. Mounting frames are welded to the sides of the housing. Connecting rods are movably connected to the upper and lower sides of the mounting frames. The other sides of the connecting rods are movably connected to sliding plates. Spring columns are slidably connected inside the sliding plates, which can effectively slow down the impact force, not only avoiding deformation of the housing caused by impact but also protecting the impactor and improving the service life of the dust filter. Fixed frames are welded to the left and right sides of the inner wall of the housing. An oil mesh is arranged inside the fixed frames. Fixing plates are welded to the left and right sides of the oil mesh. A rotary button is arranged at the bottom of the fixed frame. A threaded rod is threadedly connected inside a threaded tube. The bottom of the threaded rod is welded with a clamping plate, and the bottom of the clamping plate is clamped with the fixing plate, making the installation and disassembly of the oil mesh more convenient and greatly improving the working efficiency during maintenance.

[0004] Although the dust filters in the prior art can make the installation and disassembly of the oil mesh more convenient and improve the working efficiency during maintenance, after the internal oil mesh is blocked, it cannot perform preliminary cleaning on its own. During the period from when the oil mesh is blocked to when the staff replaces it, the dust filtration efficiency of the dust filter will decrease, and the required dust filtration effect cannot be satisfied.

[0005] Therefore, we propose a tubular oil mesh air filter for civil air defense projects to facilitate the solution of the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to provide a tubular oil mesh air filter for civil air defense projects to solve the problem that after the internal oil mesh of the current air filters on the market is blocked, it cannot be initially cleaned by itself. During the period from when the oil mesh is blocked to when the staff replaces it, the dust filtration efficiency of the air filter will decrease, and it cannot meet the required dust filtration effect.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A tubular oil mesh air filter for civil air defense projects, including a filter body. A docking block is fixedly connected inside the filter body, and a filter element body is nested inside the two docking blocks. A handle is fixedly connected to the outside of the filter element body. A main filter element through-channel and a spare through-channel are respectively opened on the filter element body. A moving plate that can block the spare through-channel is arranged inside the filter body. An air supply through-channel is opened on the moving plate, and an adjustment mechanism is arranged between the end side of the moving plate and the filter body. The adjustment mechanism drives the adjustment plate to move through the deformation of the shape memory alloy it includes, so that the device can filter better.

[0008] Preferably, a limiting plate is fixedly connected to the side of the docking block, a sliding groove is opened inside the limiting plate, a fixing plate is nested inside the sliding groove, and the three moving plates are fixedly connected through the fixing plate. Side plates are fixedly connected to the sides of the lower two fixing plates.

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

[0010] Preferably, the first magnetic block and the second magnetic block have opposite magnetic polarities. When the shape memory alloy is not deformed, it is arranged in an unfolded zigzag structure. The second magnetic block is nested inside the sleeve.

[0011] Preferably, the area of the air supply through-channel is larger than the area of the spare through-channel. The fixing plate and the moving plate form a sliding structure through the sliding groove. The connecting rod and the adjustment plate form a sliding structure through the sleeve.

[0012] Preferably, an airbag is fixedly connected between the inner side of the adjusting plate and the outer side of the filter body, and a one-way intake valve is arranged on the outer side of the airbag. A ventilation pipe is arranged through the inner side of the airbag and extends through to the inner side of the filter body, and a one-way exhaust valve is arranged at the end of the ventilation pipe.

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

[0014] Preferably, the mesh surface of the filter element body is made of deformable metal material. Two groups of auxiliary plates are symmetrically arranged below the center point of the adjusting plate respectively. A sliding rod is fixedly connected to the inner side of the adjusting plate arranged at the rear side, and the sliding rod is nested and connected to the inner side of the filter body. Adjusting magnets are arranged at equal intervals on the sliding rod.

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

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the staff assembles the filter element body, they can hold the handle, so that the filter element body is butted between two butting blocks arranged inside the filter body. The filter element body can be limited by the butting blocks. At this time, the staff can fix the outer side of the filter element body and the filter body through threads, so as to quickly complete the assembly of the filter element body. The conveyed gas can enter the inside of the filter element body through the main filter groove of the filter element. The gas carrying dust can adhere to the oil mist and dust in the air through the multi-layer oil-coated metal wire meshes arranged inside the filter element body, so as to achieve filtration.

[0017] When there is a lot of dust adhering to the oil-coated metal wire mesh inside the filter element body, the temperature inside the filter body rises. This heat conducting plate can transfer the increased temperature inside the filter body to the shape memory alloy. The shape memory alloy senses the temperature change and thus deforms and folds. During the deformation process of the shape memory alloy, it will synchronously drive the adjusting plate to move towards the filter body side under the driving action of the auxiliary plate. At this time, the adjusting plate will squeeze the airbag, so that the gas inside the airbag is ejected to one side of the filter element body through the one-way exhaust valve, so as to remove the impurities adhering to the filter element body and reduce the dust blockage.

[0018] While the adjusting plate moves driven by the shape memory alloy, the sliding rod slides along the filter body. At this time, the adjusting magnet can indirectly adsorb the metal mesh surface of the filter element body, causing the metal mesh surface of the filter element body to vibrate, further shaking off the impurities adhering to the oil metal wire mesh. Through the cooperation of the airbag and the adjusting magnet, the degree of blockage of the filter element body can be reduced, enabling air to pass through the filter element body smoothly, and further causing the temperature inside the filter body to drop and return to normal.

[0019] When the temperature inside the filter body rises, the adjusting plate will synchronously drive the connecting rod to move along the sleeve, causing the connecting rod to synchronously drive the second magnetic block to move until the second magnetic block adsorbs to the first magnetic block. When the temperature inside the filter body returns to normal, the connecting rod moves outward and resets under the drive of the adjusting plate. Since the second magnetic block and the first magnetic block are adsorbed to each other at this time, the first magnetic block will drive the moving plate to move synchronously under the drive of the second magnetic block, thus not blocking the spare through groove provided on the filter element body. At this time, air can enter from inside the spare through groove and be filtered.

[0020] Through the setting of two groups of filter channels, an auxiliary channel can be provided for the filtration of gas, thereby reducing the possibility that the overall filtration effect is reduced due to low filtration efficiency caused by blockage of the main through groove of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front three-dimensional view structural diagram of the present invention; Figure 2 is a rear three-dimensional view structural diagram of the present invention; Figure 3 is a front cross-sectional three-dimensional view structural diagram of the present invention; Figure 4 is a three-dimensional view structural diagram of the filter element body of the present invention; Figure 5 is a three-dimensional view structural diagram of the moving plate of the present invention; Figure 6 is a three-dimensional view structural diagram of the connecting rod of the present invention; Figure 7 is a structural diagram of the present invention when the air supply through groove and the spare through groove are in corresponding positions; Figure 8 is a rear cross-sectional three-dimensional view structural diagram of the present invention; Figure 9 is a structural diagram of the present invention when the shape memory alloy is not deformed; Figure 10 is a structural diagram of the present invention after the shape memory alloy is deformed.

[0022] In the figure: 1. Filter dust collector body; 2. Filter element body; 3. Docking block; 4. Handle; 5. Main filter element through groove; 6. Airbag; 7. One-way intake valve; 8. One-way exhaust valve; 9. Auxiliary plate; 10. Adjusting plate; 11. Moving plate; 12. Air supply through groove; 13. Side plate; 14. Spare through groove; 15. Limiting plate; 16. Fixed plate; 17. Slide groove; 18. First magnet; 19. Second magnet; 20. Shape memory alloy; 21. Heat conducting plate; 22. Sleeve; 23. Connecting rod; 24. Slide rod; 25. Adjusting magnet. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1: As Figure 1 and Figure 2 shown in the technical solution, the present invention provides the following technical solution: A tubular oil mesh filter dust collector for civil air defense projects discloses a filter element body 2. By means of multiple layers of oil-hanging metal meshes arranged inside the filter element body 2, oil mist and dust in the air are adhered to achieve filtration. A docking block 3 is fixedly connected inside the filter dust collector body 1, and the filter element body 2 is nested and connected inside the two docking blocks 3. A handle 4 is fixedly connected to the outside of the filter element body 2. A limiting plate 15 is fixedly connected to the side of the docking block 3, and a slide groove 17 is opened inside the limiting plate 15. A fixed plate 16 is nested and connected inside the slide groove 17. At the same time, three moving plates 11 are fixedly connected through the fixed plate 16, and side plates 13 are fixedly connected to the sides of the lower two fixed plates 16.

[0025] When the staff assembles the filter element body 2, they can hold the handle 4 and make the filter element body 2 dock between the two docking blocks 3 arranged inside the filter dust collector body 1. The filter element body 2 can be limited by the docking block 3. At this time, the staff can fix the outside of the filter element body 2 and the filter dust collector body 1 through threads, so as to quickly complete the assembly of the filter element body 2. The conveyed gas can enter the inside of the filter element body 2 through the main filter element through groove 5. The gas carrying dust can adhere to the oil mist and dust in the air through the multiple layers of oil-hanging metal meshes arranged inside the filter element body 2, so as to achieve filtration.

[0026] Embodiment 2: As Figure 3 , Figure 5 , Figure 8 , Figure 9 and Figure 10For the technical solution shown, the present invention provides the following technical solution: A tubular oil mesh dust filter for civil air defense projects discloses an adjustment mechanism. The impurities adhered to the filter element body 2 are removed through the adjustment mechanism to reduce dust blockage. Filter element main through grooves 5 and spare through grooves 14 are respectively formed on the filter element body 2. A moving plate 11 capable of blocking the spare through groove 14 is arranged inside the dust filter body 1. An air supply through groove 12 is formed on the moving plate 11. An adjustment mechanism is arranged between the end side of the moving plate 11 and the dust filter body 1. The adjustment mechanism drives the adjustment plate 10 to move through the deformation of the shape memory alloy 20 included therein, so that the device can filter better. The adjustment mechanism includes a heat conducting plate 21. The heat conducting plate 21 is fixedly connected to the shell of the dust filter body 1. The outside of the heat conducting plate 21 is fixedly connected to the shape memory alloy 20. An auxiliary plate 9 is fixedly connected to the outside of the shape memory alloy 20. An adjustment plate 10 is fixedly connected between the upper and lower groups of auxiliary plates 9. An airbag 6 is fixedly connected between the inner side of the adjustment plate 10 and the outside of the dust filter body 1. A one-way intake valve 7 is arranged on the outside of the airbag 6. A ventilation pipe is arranged through the inside of the airbag 6 and extends through to the inside of the dust filter body 1. A one-way outlet valve 8 is arranged at the end of the ventilation pipe. The one-way outlet valve 8 is arranged on the front side of the filter element body 2 and is arranged vertically at equal intervals. The mesh surface of the filter element body 2 is made of deformable metal material. Two groups of auxiliary plates 9 are symmetrically arranged below the center point of the adjustment plate 10 respectively. A sliding rod 24 is fixedly connected to the inner side of the adjustment plate 10 arranged at the rear side. The sliding rod 24 is nested and connected to the inside of the dust filter body 1. Adjustment magnets 25 are arranged at equal intervals on the sliding rod 24. The metal mesh surface of the filter element body 2 can undergo elastic deformation through the adjustment magnets 25. The sliding rod 24 and the dust filter body 1 form a sliding structure through the auxiliary plate 9.

[0027] When there is a large amount of dust adhering to the oil-hanging wire mesh inside the filter element body 2, the filter element body 2 is blocked at this time, which reduces the effective cross-sectional area of gas flow, forcing the fluid velocity to increase. According to Bernoulli's equation, the increase in velocity will lead to an increase in dynamic pressure. At the same time, the static pressure inside the dust filter increases due to the blocked flow. When the gas passes through the blocked area, violent turbulence occurs due to the narrow channel, and the intermolecular collision and friction are intensified, and the kinetic energy is converted into heat energy, resulting in an increase in the temperature inside the dust filter body 1. This heat-conducting plate 21 can transfer the increased temperature inside the dust filter body 1 to the shape-memory alloy 20. The shape-memory alloy 20 senses the temperature change and thus deforms and folds. During the deformation process of the shape-memory alloy 20, it will drive the adjusting plate 10 to move towards the dust filter body 1 side synchronously under the driving action of the auxiliary plate 9. At this time, the adjusting plate 10 will squeeze the airbag 6, causing the gas inside the airbag 6 to be ejected towards one side of the filter element body 2 through the one-way air outlet valve 8, thereby removing the impurities adhering to the filter element body 2 and reducing the dust blockage. When the adjusting plate 10 moves under the driving action of the shape-memory alloy 20, it can synchronously drive the sliding rod 24 to slide along the dust filter body 1 through the auxiliary plate 9 provided on the other side. At this time, the adjusting magnets 25 arranged at equal intervals on the sliding rod 24 move synchronously with the movement of the sliding rod 24. The adjusting magnets 25 can indirectly adsorb the metal mesh surface of the filter element body 2 at this time, causing the metal mesh surface of the filter element body 2 to vibrate, further shaking off the impurities adhering to the oil wire mesh. Through the mutual cooperation of the airbag 6 and the adjusting magnets 25, the blockage degree of the filter element body 2 can be reduced, so that the air can smoothly pass through the filter element body 2, and further the temperature inside the dust filter body 1 drops and returns to the normal state.

[0028] Embodiment 3: As Figures 1-5 shown in the technical solution, the present invention provides the following technical solution: A tubular oil mesh dust filter for civil air defense projects discloses a spare through groove 14. Through the setting of two groups of filter channels, an auxiliary channel can be provided for the filtration of gas, thereby reducing the possibility that the overall filtration effect is reduced due to the low filtration efficiency after the main through groove 5 of the filter element is blocked: 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 18 is fixedly connected to the side of the side plate 13. A sleeve 22 is fixedly connected to the side of the dust filter body 1. The connecting rod 23 is nested inside the sleeve 22. The first magnetic block 18 and the second magnetic block 19 have opposite magnetic polarities. When the shape-memory alloy 20 is not deformed, it is arranged in an unfolded zigzag structure. The second magnetic block 19 is nested inside the sleeve 22. The area of the air supply through groove 12 is larger than the area of the spare through groove 14. The fixing 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 When the temperature inside the dust filter body 1 rises, the adjusting plate 10 will synchronously drive the connecting rod 23 to move along the sleeve 22, so that the connecting rod 23 synchronously drives the second magnetic block 19 to move until the second magnetic block 19 adsorbs to the first magnetic block 18. When the temperature inside the dust filter body 1 returns to normal, the connecting rod 23 moves outward under the drive of the adjusting plate 10 for resetting. Since the second magnetic block 19 and the first magnetic block 18 adsorb to each other at this time, the first magnetic block 18 will drive the moving plate 11 to move synchronously under the driving action of the second magnetic block 19, so as not to block the spare through slot 14 provided on the filter element body 2. At this time, air can enter from the inside of the spare through slot 14 and be filtered, reducing the possibility that the overall filtration effect is reduced due to the low filtration efficiency after the main through slot 5 of the filter element is blocked.

[0029] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tubular oil-net dust filter for civil air defense engineering, comprising a dust filter body (1), wherein a docking block (3) is fixedly connected to the interior of the dust filter body (1), and a filter element body (2) is nested and connected to the inner sides of two sets of docking blocks (3), and a handle (4) is fixedly connected to the outer side of the filter element body (2), characterized in that: The filter element body (2) is provided with a filter element main through groove (5) and a spare through groove (14), respectively; a movable plate (11) capable of shielding the spare through groove (14) is provided inside the dust filter body (1), and an air supply through groove (12) is provided on the movable plate (11); and an adjustment mechanism is provided between the end side of the movable plate (11) and the dust filter body (1), and the adjustment mechanism drives the adjustment plate (10) to move through the deformation of the memory alloy (20) included in the adjustment mechanism.

2. The tubular oil-net dust filter for civil air defense engineering according to claim 1, characterized in that: The side of the docking block (3) is fixedly connected to a limit plate (15), and a slide groove (17) is provided inside the limit plate (15), and a fixed plate (16) is nested inside the slide groove (17). At the same time, the three groups of movable plates (11) are fixedly connected via the fixed plate (16), and the sides of the two lower groups of fixed plates (16) are fixedly connected to the side plates (13).

3. The tubular oil-net dust filter for civil air defense engineering according to claim 2, characterized in that: The adjustment mechanism comprises a heat conducting plate (21), the heat conducting plate (21) being fixedly connected to the shell of the dust filter body (1), and the outer side of the heat conducting plate (21) is fixedly connected to the memory alloy (20), and the outer side of the memory alloy (20) is fixedly connected to an auxiliary plate (9), an adjustment plate (10) is fixedly connected between the upper and lower groups of auxiliary plates (9), and the inner side of the adjustment plate (10) is fixedly connected to a connecting rod (23), and the end side of the connecting rod (23) is fixedly connected to a second magnetic block (19), the side of the side plate (13) is fixedly connected to the first magnetic block (18), and the side of the dust filter body (1) is fixedly connected to a sleeve (22), and the connecting rod (23) is nested and connected inside the sleeve (22).

4. The tubular oil-net dust filter for civil air defense engineering according to claim 3, characterized in that: The first magnetic block (18) and the second magnetic block (19) have opposite magnetic properties; the memory alloy (20) is arranged in an unfolded zigzag structure when not deformed; and the second magnetic block (19) is nested and connected inside the sleeve (22).

5. The tubular oil-net dust filter for civil air defense engineering according to claim 3, characterized in that: The area of ​​the air supply groove (12) is larger than the area of ​​the standby groove (14); the fixed plate (16) forms a sliding structure with the movable plate (11) and the slide groove (17); and the connecting rod (23) forms a sliding structure with the adjusting plate (10) and the sleeve (22).

6. The tubular oil-net dust filter for civil air defense engineering according to claim 2, characterized in that: An air bag (6) is fixedly connected between the inner side of the adjustment plate (10) and the outer side of the dust filter body (1), and a one-way air inlet valve (7) is arranged on the outer side of the air bag (6), and a ventilation pipe is arranged through the inner side of the air bag (6), and the ventilation pipe extends through the inner side of the dust filter body (1), and a one-way air outlet valve (8) is arranged at the end of the ventilation pipe.

7. The tubular oil-net dust filter for civil air defense engineering according to claim 6, characterized in that: The one-way air outlet valves (8) are arranged on the front side of the filter element body (2), and the one-way air outlet valves (8) are arranged at equal intervals vertically.

8. The tubular oil-net dust filter for civil air defense engineering according to claim 3, characterized in that: The mesh surface of the filter element body (2) is made of a deformable metal material, two groups of auxiliary plates (9) are symmetrically arranged below the center point of the adjustment plate (10), and a slide bar (24) is fixedly connected to the inner side of the adjustment plate (10) arranged at the rear side, and the slide bar (24) is nested and connected to the inner side of the dust filter body (1), and adjustment magnets (25) are evenly spaced and arranged on the slide bar (24).

9. The tubular oil-net dust filter for civil air defense engineering according to claim 8, characterized in that: The metal mesh surface of the filter element body (2) can be elastically deformed by adjusting the magnet (25), and the sliding rod (24) forms a sliding structure with the dust filter body (1) via the auxiliary plate (9).

Images