An oil mesh dust filter for civil defense ventilation ducts

Abstract

This invention belongs to the field of dust filter technology, specifically an oil mesh dust filter for civil defense ventilation ducts, comprising: a main body box, with an air supply pipe at the bottom and an air intake mechanism installed at the top; an oil mesh, evenly installed inside the main body box near the air intake mechanism; and a processing mechanism installed at the bottom inside the main body box, used to collect and catch the oil dripping from the oil mesh. By setting up the air intake mechanism, outside air enters the main body box after passing through the filter mesh. Large particles of smoke and dust accumulated on the top of the filter mesh are cleaned by the vibration component, maintaining the filter mesh's ventilation. This avoids direct contact between the oil mesh and smoke and dust in dusty weather, preventing the surface of the oil mesh from being directly covered by dust and other debris, shortening the service life of the oil mesh, and not affecting the normal air intake of the equipment. In normal weather, the surface of the filter mesh hangs down naturally, shaking off the dust and debris on top of the filter mesh.

Description

Technical Field

[0001] This invention belongs to the field of dust filter technology, specifically an oil mesh dust filter for civil defense ventilation ducts. Background Technology

[0002] Civil defense engineering refers to underground protective structures built independently to ensure the shelter of personnel and materials, command and control of civil air defense, and medical rescue during wartime, as well as basements built in conjunction with above-ground buildings that can be used for air defense during wartime. Civil defense engineering requires the installation of civil defense ventilation ducts for ventilation. Civil defense ventilation ducts are a type of pipeline system used in civil defense engineering, mainly for the safe evacuation and survival of people in emergency situations. They have multiple functions such as ventilation, smoke exhaust, and gas protection. During the design and installation of civil defense ventilation ducts, it is often necessary to install oil mesh dust filters to filter the air passing through the civil defense ventilation ducts to ensure air cleanliness and avoid harmful gases from harming personnel.

[0003] In daily use, due to weather changes, the content of dust and sand in the air increases dramatically. When outside air directly enters the oil filter, it will cause a large number of particulate impurities to adhere to the surface of the oil filter. As a result, the oil filter needs to be replaced as soon as the weather improves and it can no longer perform its function. When replacing the oil filter, the oil filter may not be fully drained after soaking, leaving too much oil residue on the surface. After installation, it will drip due to gravity or airflow. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is as follows: an oil filter for ventilation ducts in civil defense facilities, comprising: a main body box, wherein an air supply pipe is provided at the bottom of the main body box, and an air intake mechanism is installed at the top of the main body box; an oil filter, wherein the oil filter is evenly installed inside the main body box on one side near the air intake mechanism; and a processing mechanism, wherein the processing mechanism is installed at the bottom inside the main body box, and the processing mechanism is used to receive and collect the oil dripping from the oil filter.

[0005] The processing mechanism includes:

[0006] A support, which is installed on the inner wall of the gas pipeline;

[0007] A collection assembly, mounted on top of a support, is used to collect dripping oil droplets at its bottom;

[0008] An oil-absorbing component is disposed on top of a collection component and is used to absorb and collect the collected oil.

[0009] Furthermore, the air intake mechanism includes: an air inlet, which is located at the top of the main body box, and a rotating ring is rotatably connected to the inner wall of the air inlet, the inner diameter of the rotating ring being the same as the inner diameter of the air inlet; a vibration component, a central rod is installed on the inner wall of the rotating ring, and the vibration component is rotatably connected to the central axis of the central rod; and a filter screen, which is installed on the inner wall of the rotating ring, and the filter screen is made of flexible and breathable fabric, allowing outside air to pass through the filter screen before entering the main body box. Large particles of dust and other debris accumulated on the filter screen are cleaned away by the vibration component, keeping the filter screen breathable and preventing direct contact between the oil screen and dust in dusty weather, thus preventing the surface of the oil screen from being directly covered by dust and other debris, shortening the service life of the oil screen, maintaining unobstructed airflow, and not affecting the normal air intake of the equipment. In normal weather, the rotating ring opens and rotates 180 degrees, allowing the surface of the filter screen to hang naturally, shaking off the dust and debris on top of the filter screen.

[0010] Furthermore, the processing mechanism also includes: a collection tray installed on the inner wall of the main body, with transmission pipes evenly arranged at the bottom of the collection tray, the bottom of which contacts the top of the oil suction assembly; and a concentrating assembly installed on top of the oil suction assembly. The concentrating assembly is used to concentrate the oil dripping into the collection tray, allowing it to quickly enter the oil suction assembly through the transmission pipes. The concentrating assembly collects oil dripping around the oil screen, preventing oil at the edges from tilting due to wind force and adhering to the inner wall of the main body, making it difficult to clean. Through the cooperation of the concentrating assembly and the collection assembly, the dripping oil can be quickly collected and concentrated in the oil suction assembly. After being stored in the oil suction assembly, excess oil is reduced in oxidation and contact with dust in the air. After accumulating oil from several oil screen replacements, the oil in the oil suction assembly can be used to replenish the dried oil screen. The oil suction assembly applies excess oil to the bottom of the oil screen to increase worker maintenance time, extend the oil screen's service life, and reduce oil waste.

[0011] Furthermore, the vibration assembly includes: a motor mounted in the middle of the central rod, with two connecting rods rotatably connected to the outer wall of the motor; a counterweight rotatably connected to the bottom of the connecting rods; and a fixed pad mounted on the side of the motor near the connecting rod, with a spring installed at the bottom of the fixed pad and a movable pad at the bottom of the spring. The movable pad and the spring work together to cause the counterweight to vibrate up and down during use, thereby cleaning the filter screen. The motor drives the connecting rods to rotate and move closer together, causing the connecting rods to extend and lift the counterweight. Then, the power is cut off, and the counterweight falls down onto the moving pad under gravity, compressing the spring. Due to the elastic potential energy, a relative up-and-down force is generated between the moving pad and the counterweight, thus shaking the filter screen up and down. After the elastic potential energy decreases, the motor is restarted, saving energy. At the same time, the surface of the filter screen is shaken and cleaned to maintain its air permeability and reduce the load on the oil filter in dusty weather, extending the service and maintenance time of the oil filter.

[0012] Furthermore, the collection assembly includes: a conical plate mounted on top of a support, a support rod at the top of the support supporting the conical plate from the bottom, and guide grooves evenly distributed on the surface of the conical plate. The collection assembly also includes: vent holes on the surface of the conical plate, the vent holes and guide grooves being staggered; and an arc-shaped edge located at the bottom edge of the conical plate, the interior of which collects and concentrates the oil flowing down from the top of the conical plate.

[0013] Furthermore, the oil-absorbing assembly includes: a drive seat, which is mounted on the top of the bracket, with rotating rods evenly arranged on the inner wall of the drive seat, and the outer wall of the rotating rods rotatably connected to the inner wall of the drive seat; an electric actuator, which is mounted on the end of the rotating rods, and a mounting plate is rotatably connected to the end of the electric actuator away from the rotating rods; and a sponge block, which is fixedly connected to the mounting plate, the shape of which conforms to the inner wall of the arc edge and the inner wall of the main body box, so that the electric actuator drives the sponge block upward, and the end of the electric actuator is driven to rotate the mounting plate, so that the sponge block faces the oil filter, and the oil in the sponge block is squeezed and coated onto the oil filter under the pressure of the electric actuator, increasing the oil on the surface of the oil filter to extend the service life of the oil filter, thereby providing time for maintenance by the staff and maintaining the working effect of the oil filter, avoiding affecting the air filtration quality.

[0014] Further, the concentrating component includes: a mounting frame, four of which are disposed on top of the collection tray, with a fixing ring on the inner wall of the mounting frame; a telescopic rod, also disposed on top of the mounting frame, with connecting rods symmetrically arranged at the moving end of the telescopic rod, the outer wall of the connecting rod being rotatably connected to the outer wall of the telescopic rod. The concentrating component also includes: a limiting rod, the inner wall of which is sleeved with the outer wall of the fixing ring, the top of which is rotatably connected to the bottom of the connecting rod; and a scraper, installed at the bottom of the limiting rod, the side of which is slidably connected to the inner wall of the collection tray. This allows the scraper to concentrate the oil in the collection tray near the transmission pipe, allowing the oil to flow quickly along the transmission pipe to the oil suction component. This collects and quickly gathers oil dripping from the edge of the oil screen, preventing oil droplets from adhering to the inner wall of the main tank, which would be difficult to clean and could lead to oil oxidation and corrosion of the inner wall of the main tank. This ensures that the dripping oil is quickly concentrated within the oil suction component, reducing contact between the oil and impurities, and enabling rapid oil collection.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention, by setting up an air intake mechanism, allows outside air to pass through a filter screen before entering the main body box. Large particles of smoke and dust accumulated on the top of the filter screen are cleaned away by the vibration component, keeping the filter screen breathable. This avoids direct contact between the oil screen and smoke and dust in dusty weather, preventing the surface of the oil screen from being directly covered by dust and other debris, thus shortening the service life of the oil screen, maintaining smooth airflow, and not affecting the normal air intake of the equipment. In normal weather, the rotating ring opens and rotates 180 degrees, allowing the surface of the filter screen to hang naturally, shaking off the dust and debris on top of the filter screen.

[0017] 2. This invention, by setting up a processing mechanism, collects oil dripping from the periphery of the oil filter, preventing oil at the edges from tilting due to wind force and adhering to the inner wall of the main body box, making it difficult to clean. Through the cooperation of the collection and concentration components, the dripping oil can be quickly collected and concentrated in the oil absorption component. After being stored in the oil absorption component, excess oil is reduced in terms of oxidation and contact with dust in the air. After accumulating oil from several oil filter replacements, the oil in the oil absorption component can be used to replenish the dried oil filter. The oil absorption component applies excess oil to the bottom of the oil filter, thereby increasing the worker's maintenance time, extending the service life of the oil filter, and reducing oil waste.

[0018] 3. This invention, by setting up an oil-absorbing component, causes the electric actuator to drive the sponge block upwards. The end of the electric actuator is equipped with a drive to rotate the mounting plate, so that the sponge block faces the oil filter. Under the pressure of the electric actuator, the oil absorbed in the sponge block is squeezed and applied to the oil filter, increasing the oil on the surface of the oil filter and extending its service life. This provides time for maintenance by the staff and maintains the working effect of the oil filter, avoiding affecting the air filtration quality.

[0019] 4. This invention, by setting up a concentrating component, allows the scraper to concentrate the oil in the collection tray near the transmission pipe, enabling the oil to flow quickly along the transmission pipe to the oil suction component. This collects and quickly gathers the oil dripping from the edge of the oil screen, preventing the dripping oil droplets from adhering to the inner wall of the main tank and causing difficulty in cleaning, which could lead to oil oxidation and corrosion of the inner wall of the main tank. This also allows the dripping oil to be quickly concentrated in the oil suction component, reducing contact between the oil and impurities and enabling rapid oil collection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the air intake mechanism of the present invention;

[0023] Figure 4 This is a bottom view of the processing mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the processing mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the vibration component of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the collecting component of the present invention;

[0027] Figure 8 This is a schematic diagram of the oil-absorbing component of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the components of this invention.

[0029] In the diagram: 1. Main body box; 2. Air supply pipe; 3. Air intake mechanism; 301. Air inlet; 302. Rotating ring; 303. Central rod; 304. Vibration assembly; 3041. Motor; 3042. Fixed pad; 3043. Spring; 3044. Moving pad; 3045. Connecting rod; 3046. Counterweight; 305. Filter screen; 4. Oil screen; 5. Processing mechanism; 501. Support; 502. Collection assembly; 5021. Conical plate; 5022. Arc edge ; 5023, Vent hole; 5024, Guide channel; 5025, Support rod; 503, Oil suction assembly; 5031, Drive seat; 5032, Rotating rod; 5033, Electric actuator; 5034, Mounting plate; 5035, Sponge block; 504, Transmission pipe; 505, Collection tray; 506, Central assembly; 5061, Mounting bracket; 5062, Fixing ring; 5063, Telescopic rod; 5064, Connecting rod; 5065, Limiting rod; 5066, Scraper. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0031] Example 1, please refer to Figures 1-5 The present invention provides a technical solution: an oil mesh dust filter for ventilation ducts in civil defense facilities, which is described as follows.

[0032] It includes: a main body box 1, with an air supply pipe 2 at the bottom of the main body box 1 and an air intake mechanism 3 installed at the top of the main body box 1; an oil mesh 4, which is evenly installed inside the main body box 1 on one side near the air intake mechanism 3; and a processing mechanism 5, which is installed inside the main body box 1 at the bottom and is used to receive and collect the oil dripping from the oil mesh 4.

[0033] During operation, the main body 1 operates, and the air intake mechanism 3 opens, drawing in outside air into the interior of the main body 1. The air then passes through the oil filter 4 before entering the air supply pipe 2. The oil filter 4 filters particles and dust from the air. During initial installation, oil droplets on the oil filter 4 drip downwards due to gravity. After being collected by the processing mechanism 5, the oil is stored and accumulated inside the processing mechanism 5. After a period of time, as the oil on the oil filter 4 gradually dries or decreases, the accumulated oil in the processing mechanism 5 is squeezed out again and applied to the bottom of the oil filter 4, extending its service life. In dusty weather, the air intake mechanism 3 closes, providing initial filtration of outside air and reducing contact between dust and the oil filter 4, further extending its service life.

[0034] The air intake mechanism 3 includes: an air inlet 301, which is located on the top of the main body box 1, and a rotating ring 302 is rotatably connected to the inner wall of the air inlet 301, the inner diameter of the rotating ring 302 being the same as the inner diameter of the air inlet 301; a vibration component 304, on which a central rod 303 is installed on the inner wall of the rotating ring 302, and the vibration component 304 is rotatably connected to the central axis of the central rod 303; and a filter screen 305, which is installed on the inner wall of the rotating ring 302, and the filter screen 305 is made of flexible breathable fabric.

[0035] Initially, the rotating ring 302 drives the filter screen 305 to be in the open state. When the dust content in the air is high, the built-in drive of the air inlet 301 drives the rotating ring 302 to rotate and cover the surface of the air inlet 301 with the filter screen 305. This allows the outside air to pass through the filter screen 305 before entering the main body box 1. Large dust particles and other debris accumulated on the filter screen 305 are cleaned away by the vibration component 304, keeping the filter screen 305 breathable. This prevents the oil screen 4 from directly contacting the dust in dusty weather, thus avoiding the surface of the oil screen 4 being directly covered by dust and other debris, shortening the service life of the oil screen 4, maintaining smooth airflow, and not affecting the normal air intake of the equipment. In normal weather, the rotating ring 302 opens and rotates 180 degrees, allowing the surface of the filter screen 305 to hang down naturally, shaking off the dust on top of the filter screen 305.

[0036] The processing mechanism 5 includes: a support 501, which is installed on the inner wall of the gas supply pipe 2; a collection component 502, which is installed on top of the support 501 and is used to collect dripping oil droplets at its bottom; and an oil suction component 503, which is located on top of the collection component 502 and is used to absorb and collect the collected oil. The processing mechanism 5 also includes: a collection tray 505, which is installed on the inner wall of the main body box 1 and is used to collect oil dripping from the edge of the oil mesh 4, preventing oil from dripping from the edge due to... The wind causes tilting, making it difficult to clean the oil adhering to the inner wall of the main body box 1, affecting air quality. The bottom of the collection tray 505 is evenly provided with transmission pipes 504. The collection tray 505 and the transmission pipes 504 are made of rigid material, and their surfaces in contact with oil are coated with a non-stick coating. The bottom of the transmission pipes 504 is in contact with the top of the oil suction component 503. The concentrating component 506 is installed on top of the oil suction component 503. The concentrating component 506 is used to concentrate the oil dripping into the collection tray 505, so that it can quickly enter the oil suction component 503 through the transmission pipes 504.

[0037] Shortly after the installation of the oil filter 4, due to gravity and improper operation by the staff, excessive oil drips from its surface. The collecting component 502 collects and concentrates the dripping oil, while the concentrating component 506 collects oil dripping from the periphery of the oil filter 4, preventing oil at the edges from tilting due to wind and adhering to the inner wall of the main body box 1, making it difficult to clean. Through the cooperation of the concentrating component 506 and the collecting component 502, the dripping oil can be quickly collected and concentrated in the oil-absorbing component 503. Storage in the oil-absorbing component 503 reduces oxidation and contact with dust in the air. After accumulating oil from several oil filter 4 replacements, the oil in the oil-absorbing component 503 can be used to replenish the dried oil filter 4. The oil-absorbing component 503 applies excess oil to the bottom of the oil filter 4, increasing maintenance time, extending the lifespan of the oil filter 4, and reducing oil waste.

[0038] Example 2, please refer to Figures 1-9The present invention provides a technical solution: Based on embodiment 1, the vibration assembly 304 includes: a motor 3041, which is installed in the middle of the central rod 303, and a connecting rod 3045 is rotatably connected to the outer wall of the motor 3041, with two connecting rods 3045; a counterweight 3046, whose outer wall is rotatably connected to the bottom of the connecting rod 3045; and a fixed pad 3042, which is installed on the side of the motor 3041 near the connecting rod 3045, with a spring 3043 installed at the bottom of the fixed pad 3042, and a movable pad 3044 provided at the bottom of the spring 3043. The movable pad 3044 and the spring 3043 work together to make the counterweight 3046 vibrate up and down during use by utilizing the elastic force of the spring 3043, thereby cleaning the filter screen 305.

[0039] After the rotating ring 302 is attached to the air inlet 301, the filter screen 305 is located on the surface of the air inlet 301. At this time, air with a high dust content enters the main body box 1 through the filter screen 305. Dust gradually accumulates on the surface of the filter screen 305, which can easily affect the air intake rate. At this time, the rotating ring 302 drives the counterweight 3046 upward, and the motor 3041 drives the connecting rod 3045 to rotate and move closer to each other, so that the connecting rod 3045 extends and lifts the counterweight 3046. Then the power is cut off, and the counterweight 3046 is lifted by gravity. The filter screen 305 is shaken up and down as it falls onto the movable pad 3044, compressing the spring 3043. Due to the elastic potential energy, the movable pad 3044 and the counterweight 3046 generate a relative up-and-down force, thereby shaking the filter screen 305. After the elastic potential energy decreases, the motor 3041 restarts, saving energy. At the same time, the surface of the filter screen 305 is shaken and cleaned to maintain the air permeability of the filter screen 305 and reduce the load on the oil filter screen 4 in dusty weather, thus extending the service and maintenance time of the oil filter screen 4.

[0040] The collecting component 502 includes a conical plate 5021, which is made of a rigid material and has a non-stick oil coating on its surface. The conical plate 5021 is installed on the top of the bracket 501. A support rod 5025 is provided on the top of the bracket 501. The support rod 5025 supports the conical plate 5021 from the bottom. The surface of the conical plate 5021 is uniformly provided with guide grooves 5024, which facilitate the collection of oil droplets within the arc-shaped edge 5022. The collection component 502 also includes: a vent 5023, the inner wall of which is provided with a breathable screen, the vent 5023 being opened on the surface of the conical plate 5021, and the vent 5023 being staggered with the guide groove 5024; and an arc-shaped edge 5022, which is located at the bottom edge of the conical plate 5021, and the interior of the arc-shaped edge 5022 collects and concentrates the oil flowing down from the top of the conical plate 5021.

[0041] Oil dripping from the oil mesh 4 is caught by the conical plate 5021 and flows into the arc-shaped edge 5022 along the guide groove 5024. Air enters the air supply pipe 2 through the screen on the vent hole 5023.

[0042] The central assembly 506 includes: a mounting frame 5061, four of which are mounted on top of the collection tray 505, and a retaining ring 5062 on the inner wall of the mounting frame 5061; a telescopic rod 5063, also mounted on top of the mounting frame 5061, with connecting rods 5064 symmetrically arranged at the moving end of the telescopic rod 5063, the outer wall of the connecting rod 5064 being rotatably connected to the outer wall of the telescopic rod 5063. The central assembly 506 also includes: a limiting rod 5065, the inner wall of which is sleeved with the outer wall of the retaining ring 5062, the diameter of the hole in the limiting rod 5065 being larger than the outer diameter of the retaining ring 5062, and the top of the limiting rod 5065 being rotatably connected to the bottom of the connecting rod 5064; and a scraper 5066, mounted on the bottom of the limiting rod 5065, with its side slidably connected to the inner wall of the collection tray 505.

[0043] When oil drips from the oil mesh 4, it is caught by the conical plate 5021 and collected on the curved edge 5022. Oil dripping from the edge of the oil mesh 4 is caught by the collection tray 505, then passes through the transmission pipe 504 and comes into contact with the oil suction unit 503, where it is collected. Subsequently, the oil collected by the collection tray 505 does not easily concentrate and flows rapidly. At this time, the built-in drive of the mounting bracket 5061 drives the telescopic rod 5063 to extend and retract back and forth, causing the connecting rod 5064 to drive the limiting rod 5065 at the fixing ring 5062. The scraper 5066 moves back and forth, causing the oil in the collection tray 505 to be concentrated near the transmission pipe 504. This allows the oil to flow quickly along the transmission pipe 504 to the oil suction assembly 503, collecting and quickly concentrating the oil dripping from the edge of the oil mesh 4. This prevents the dripping oil droplets from adhering to the inner wall of the main body box 1, making it difficult to clean and causing the oil to oxidize and corrode the inner wall of the main body box 1. The dripping oil is quickly concentrated in the oil suction assembly 503, reducing the contact between the oil and impurities and enabling the oil to be collected quickly.

[0044] The oil absorption assembly 503 includes: a drive seat 5031, which is mounted on the top of the bracket 501 and rotatably connected to the top of the bracket 501; rotating rods 5032 are evenly arranged on the inner wall of the drive seat 5031, and the outer wall of the rotating rods 5032 is rotatably connected to the inner wall of the drive seat 5031; an electric push rod 5033, which is mounted on the end of the rotating rods 5032, and a mounting plate 5034 is rotatably connected to the end of the electric push rod 5033 away from the rotating rods 5032; and a sponge block 5035, which is fixedly connected to the mounting plate 5034, with the top of the sponge block 5035 in contact with the transmission pipe 504, and the shape of the sponge block 5035 conforming to the inner wall of the arc edge 5022 and the inner wall of the main body box 1.

[0045] The oil in the transmission pipe 504 directly enters the sponge block 5035. The oil collected by the arc-shaped edge 5022 is absorbed by the sponge block 5035 under the rotation of the drive seat 5031. When the sponge block 5035 has absorbed and stored a large amount of oil, and when the oil on the surface of the oil filter 4 is dry or its service life is about to end, the drive seat 5031 drives the rotating rod 5032 to rotate, causing the electric push rod 5033 to move the sponge block 5035 upward. The end of the electric push rod 5033 is equipped with a drive to rotate the mounting plate 5034, so that the sponge block 5035 faces the oil filter 4. Under the pressure of the electric push rod 5033, the oil in the sponge block 5035 is squeezed and applied to the oil filter 4, increasing the oil on the surface of the oil filter 4 to extend the service life of the oil filter 4, thus providing time for maintenance by the staff and maintaining the working effect of the oil filter 4 to avoid affecting the air filtration quality.

[0046] The specific workflow is as follows:

[0047] During operation, the main body box 1 is activated and the air intake mechanism 3 is opened. Initially, the rotating ring 302 drives the filter screen 305 to be in the open state. When the dust content in the air is high, the built-in drive of the air intake 301 drives the rotating ring 302 to rotate and cover the surface of the air intake 301 with the filter screen 305, so that the outside air first passes through the filter screen 305 and then enters the main body box 1. The large particles of smoke and dust accumulated on the top of the filter screen 305 are cleaned off by the vibration component 304. In normal weather, the rotating ring 302 is opened and rotated 180 degrees, so that the surface of the filter screen 305 hangs down naturally, shaking off the dust on the top of the filter screen 305.

[0048] Outside air is drawn in through the intake mechanism 3 and enters the interior of the main body box 1. It then passes through the oil mesh 4 for filtration before entering the air supply pipe 2. The oil mesh 4 filters particles and dust in the air. Shortly after the oil mesh 4 is installed, due to gravity and improper operation by the staff, excessive oil accumulates on the surface of the oil mesh 4, causing it to drip. At this time, the collection component 502 collects and concentrates the dripping oil, while the concentration component 506 collects the oil dripping around the oil mesh 4. Through the cooperation of the concentration component 506 and the collection component 502, the dripping oil can be quickly collected and concentrated in the oil suction component 503. After being stored in the oil suction component 503, the excess oil is reduced from oxidation and contact with dust in the air. After accumulating the oil from several oil mesh 4 replacements, the oil in the oil suction component 503 can be used to replenish the oil in the dried oil mesh 4. The oil suction component 503 applies excess oil to the bottom of the oil mesh 4 to increase the maintenance time for workers, extend the service life of the oil mesh 4, and reduce oil waste.

[0049] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An oil screen dust collector for civil air defense ventilation ducts, characterized in that it comprises: a main box (1) provided with a gas inlet pipe (2) at the bottom and a gas inlet mechanism (3) at the top; an oil screen (4) uniformly installed inside the main box (1) near the gas inlet mechanism (3); and a treatment mechanism (5) installed below the inside of the main box (1) for receiving and collecting the oil dripping from the oil screen (4). The treatment mechanism (5) comprises: a bracket (501) installed on the inner wall of the gas inlet pipe (2); a collection assembly (502) installed on the top of the bracket (501) for concentrating the oil droplets at the bottom; an oil absorption assembly (503) provided on the top of the collection assembly (502) for absorbing the collected oil; a collection tray (505) installed on the inner wall of the main box (1) and provided with a transmission pipe (504) at the bottom, the bottom of which is in contact with the top of the oil absorption assembly (503); and a concentration assembly (506) installed on the top of the oil absorption assembly (503) for concentrating the oil dripping into the collection tray (505) so as to quickly pass through the transmission pipe (504) into the oil absorption assembly (503). The gas inlet mechanism (3) comprises: a gas inlet (301) provided on the top of the main box (1) and rotatably connected with a rotating ring (302) on the inner wall, the inner diameter of the rotating ring (302) being the same as that of the gas inlet (301); a vibration assembly (304) rotatably connected with the central shaft of a central rod (303) on the inner wall of the rotating ring (302); and a filter screen (305) made of flexible and breathable cloth and installed on the inner wall of the rotating ring (302). The vibration assembly (304) comprises: a motor (3041) installed on the middle of the central rod (303) and rotatably connected with two connecting rods (3045) on the outer wall; and a counterweight (3046) rotatably connected with the bottom of the connecting rod (3045) on the outer wall. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A fixed base plate (3042) is installed on one side of the motor (3041) close to the connecting rod (3045), the bottom of the fixed base plate (3042) is provided with a spring (3043), the bottom of the spring (3043) is provided with a moving base plate (3044), the moving base plate (3044) and the spring (3043) jointly act, in use, the spring (3043) is used for vibrating the counterweight (3046) up and down, so as to clean the filter screen (305); The oil suction assembly (503) comprises: A driving seat (5031) is arranged on the top of the support (501), and the inner wall of the driving seat (5031) is uniformly provided with a rotating rod (5032), and the outer wall of the rotating rod (5032) is rotationally connected with the inner wall of the driving seat (5031); An electric push rod (5033) is arranged on the end of the rotating rod (5032), and the end, away from the rotating rod (5032), of the electric push rod (5033) is rotationally connected with a mounting plate (5034); A sponge block (5035) is fixedly connected to the mounting plate (5034), and the shape of the sponge block (5035) is consistent with the inner wall of the arc-shaped edge (5022) and the inner wall of the main body box (1); The concentrating assembly (506) comprises: A mounting frame (5061) is arranged on the top of the collecting tray (505), and the mounting frame (5061) is provided with four mounting frames (5061), and the inner wall of the mounting frame (5061) is provided with a fixing ring (5062); A telescopic rod (5063) is arranged on the top of the mounting frame (5061), and the movable end of the telescopic rod (5063) is symmetrically provided with a connecting rod (5064), and the outer wall of the connecting rod (5064) is rotationally connected with the outer wall of the telescopic rod (5063); The concentrating assembly (506) further comprises: A limiting rod (5065) is arranged on the top of the mounting frame (5061), and the movable end of the telescopic rod (5063) is symmetrically provided with a connecting rod (5064), and the outer wall of the connecting rod (5064) is rotationally connected with the outer wall of the telescopic rod (5063); A limiting rod (5065) is arranged on the top of the mounting frame (5061), and the movable end of the telescopic rod (5063) is symmetrically provided with a connecting rod (5064), and the outer wall of the connecting rod (5064) is rotationally connected with the outer wall of the telescopic rod (5063); 2. The oil mesh dust filter for a civil air defense ventilation duct according to claim 1, characterized by: The collecting assembly (502) comprises: A conical plate (5021) is arranged on the top of the support (501), the top of the support (501) is provided with a supporting rod (5025), the supporting rod (5025) supports the conical plate (5021) from the bottom, and the surface of the conical plate (5021) is uniformly provided with a flow guide groove (5024).

3. The oil mesh dust filter for a civil air defense ventilation duct according to claim 2, characterized in that: The collecting assembly (502) further comprises: The collecting assembly (502) further comprises: Ventilation holes (5023) are arranged on the surface of the conical plate (5021), and the ventilation holes (5023) and the flow guide grooves (5024) are arranged alternately. An arc-shaped edge (5022) is arranged at the edge of the bottom of the conical plate (5021), and the inside of the arc-shaped edge (5022) collects and concentrates the oil product flowing down from the top of the conical plate (5021).

Images