A dust separation and filtration device for a high-powered dust collection system in offshore oil fields

Abstract

This invention belongs to the field of environmental engineering, and particularly relates to a dust separation and filtration device for a high-powered dust collection system in offshore oil fields. It includes a trolley, a handle, a blower, a mounting shell, a protective shell, and an air inlet. The handle is fixed to the upper side of the trolley, the blower is mounted on the lower side of the trolley, the mounting shell is mounted on the upper side of the trolley and located below and in front of the handle, the protective shell is mounted on the mounting shell, and the air inlet is mounted on the inner bottom side of the mounting shell. By using the air blowing component to target any filter screen on the left side, most of the impurities attached to the filter screen can be quickly loosened and dispersed, achieving initial removal of accumulated impurities. Simultaneously, the cleaning component further functions, accurately scraping away small particulate impurities remaining on the right side of the filter screen, deeply cleaning any stubborn impurities that may be left behind during air blowing, ensuring the cleanliness of the filter screen, restoring its good filtration performance, and thus extending the service life of the filter screen.

Description

Technical Field

[0001] This invention belongs to the field of environmental engineering, and in particular relates to a dust separation and filtration device for a high-powered dust collection device in offshore oil fields. Background Technology

[0002] Offshore oil fields refer to areas rich in oil and natural gas resources located within the crust of the ocean. The development of these fields, as a core link in offshore oil and gas resource exploration and production, occupies a crucial strategic position in the global energy supply landscape. The operations of offshore oil fields generate large amounts of dust-containing waste gas. Given the stringent environmental regulations on gas emissions, efficient purification treatment of these waste gases is essential to ensure that the gases ultimately released into the atmosphere meet environmental requirements.

[0003] However, the dust separation and filtration devices equipped with ordinary dust collection equipment commonly used in offshore oil fields are prone to accumulating large amounts of intercepted dust and impurities on the filter screen during long-term continuous filtration operations. As the accumulation of impurities intensifies, the ventilation performance of the filter screen will significantly decrease, resulting in a weakening of the suction power of the dust collection device, which in turn affects the efficiency of the entire exhaust gas treatment system. In addition, the accumulation of impurities may also cause filter screen blockage. Once blockage occurs, not only will frequent shutdowns for cleaning and maintenance be required, increasing manpower and equipment costs, but it may also lead to the paralysis of the exhaust gas treatment system, causing serious environmental pollution risks.

[0004] Therefore, in view of the various drawbacks of the dust separation and filtration devices equipped with ordinary dust collection devices, there is an urgent need to provide a dust separation and filtration device for high-power dust collection devices in offshore oil fields, so as to solve the above problems and ensure the stable and efficient operation of offshore oil field exhaust gas treatment. Summary of the Invention

[0005] In order to overcome the shortcomings of ordinary dust separation and filtration devices, which are prone to accumulating dust and impurities during long-term continuous filtration, resulting in decreased ventilation performance, weakened suction, reduced exhaust gas treatment efficiency, and potential blockage, thereby increasing costs and posing environmental pollution risks, this invention provides a dust separation and filtration device for high-powered dust collection devices in offshore oil fields.

[0006] This invention is achieved through the following technical means: a dust separation and filtration device for a high-powered dust collection system in offshore oil fields, comprising a trolley, a handle, a blower, a mounting shell, a protective shell, an air inlet, an air outlet, air supply pipes, a first dust collection frame, a sealing plate, a second dust collection frame, and a filter screen. The handle is fixed to the upper side of the trolley, the blower is installed on the lower side of the trolley, the mounting shell is installed on the upper side of the trolley and located below and in front of the handle, the protective shell is installed on the mounting shell, the air inlet is installed on one side of the inner bottom of the mounting shell, the air outlet is installed on the other side of the inner bottom of the mounting shell, two air supply pipes are arranged side by side between the air inlet and the air outlet, and each discharge port is opened at the bottom end of each air supply pipe. The system includes a first dust collection frame fixed to the lower end of one end of each air supply pipe and located below the corresponding discharge port, with the lower part of the first dust collection frame extending to the outside of the protective shell. A second dust collection frame is fixed to the right side of the mounting shell, with one part of the second dust collection frame extending into the interior of the air inlet and the other part extending to the outside of the mounting shell. Sealing plates are installed at the lower parts of both the first and second dust collection frames. Two filter screens are fixed to the two air outlets of the air inlet, and two other filter screens are fixed to the middle of the two air supply pipes and located above the two discharge ports. The system also includes an air blowing assembly and a cleaning assembly, both of which are mounted on the two air supply pipes.

[0007] Furthermore, the air blowing assembly includes an air inlet pipe, an annular pipe, an air outlet pipe, and a nozzle. Each annular pipe is installed on the outer left side of the other end of each air supply pipe. Each air inlet pipe is fixed to each annular pipe and directly connects to the air supply channel of the annular pipe. The protective shell has the same number of n-shaped slots as the air inlet pipes, corresponding one-to-one with one end of two air inlet pipes. Multiple air outlet pipes arranged in a ring array form a group. Each group of air outlet pipes is fixed to each annular pipe and extends into the corresponding air supply pipe. Each nozzle is fixed to the air outlet end of each air outlet pipe and is aligned with the corresponding filter screen side.

[0008] Furthermore, the cleaning assembly includes a support frame, a motor, a screw, and a scraper. Each support frame is installed inside the other end of each air supply pipe, and each motor is installed on each support frame. One end of each screw is fixed to the right-facing output shaft of each motor via a coupling, and the other end passes through the corresponding filter screen and rotates with it. Each scraper is fixed to the other end of each screw. The scraping surface of the scraper is equal in length to the diameter of the filter screen, and its scraping surface forms a rotational contact with the other side of the corresponding filter screen. The scraping surface adopts an inclined structure design.

[0009] Furthermore, it also includes guide plates, slide plates, magnetic blocks, and magnetic plates. Each guide plate is fixed to one side of each motor and forms a rotational engagement with the other end of the corresponding screw. One end of each slide plate is threaded onto the outside of each screw and slides with the corresponding guide plate. Each magnetic plate is slidably disposed inside each air supply pipe and forms a sliding contact with the corresponding first dust collection frame. Each magnetic block is fixed to the other end of each slide plate and magnetically attracts the corresponding magnetic plate through the pipe wall of the corresponding air supply pipe. Each opening is opened on one side of each magnetic plate, so that one side of the magnetic plate is open and the other side is closed, and the closed side of the magnetic plate faces the top of the corresponding discharge port.

[0010] Furthermore, it also includes a fixing frame, a circular plate, a guide rod, a sealing ring, a spring, and a connecting plate. Each fixing frame is fixed inside one end of each gas pipe, each circular plate is fixed to one side of each fixing frame, each guide rod is fixed to the upper part of one end of each gas pipe, each sealing ring is slidably disposed inside one end of each gas pipe and slidably connected to the corresponding guide rod, each circular plate is located on one side of each sealing ring, and its outer diameter matches the inner diameter of the sealing ring, each spring is sleeved on the outside of each guide rod, and its two ends are fixedly connected to the corresponding sealing ring and the corresponding gas pipe, respectively, and each connecting plate is fixed to the right side of each magnetic plate and fixedly connected to the corresponding sealing ring.

[0011] Furthermore, it also includes annular plates, rolling balls, baffles, and limiting plates. Each annular plate is fixed inside the other end of each gas pipe. Each rolling ball is rotatably disposed on the upper part of the other end of each gas pipe, with one half extending to the outside of the gas pipe and the other half extending to the inside of the gas pipe. Each baffle is fixed to the other half of each rolling ball and is embedded in the groove of the corresponding annular plate to fit it tightly. Each limiting plate is installed on the upper side of each annular plate and is located to the right of the corresponding baffle and in contact with it.

[0012] Furthermore, it also includes glass panels, each of which is embedded and fixed to one side of each first dust collection frame.

[0013] Furthermore, both the air inlet end of the air inlet and the air inlet end of the air inlet pipe are equipped with flanges.

[0014] Furthermore, the mounting bracket adopts an X-shaped structure design, which divides a portion of the gas delivery channel of the gas pipeline into four equal parts.

[0015] Furthermore, both sides of the groove in the annular plate are provided with inclined surfaces.

[0016] Beneficial effects: 1. By using the air blowing component to blow air onto any filter screen on the left side, most of the impurities attached to the filter screen can be quickly loosened and blown away, achieving the initial removal of accumulated impurities from the filter screen. At the same time, the cleaning component further plays its role, accurately scraping away small particulate impurities remaining on the right side of the filter screen, and deeply cleaning stubborn impurities that may be left behind during air blowing, ensuring the cleanliness of the filter screen, restoring its good filtration performance, and thus extending the service life of the filter screen.

[0017] 2. By cleverly combining guide plates, slide plates, magnetic blocks, and magnetic plates, an intelligent discharge control mechanism is constructed. This mechanism enables the magnetic plates and openings to open and close the discharge port as needed, allowing small particulate impurities to fall into the first dust collection frame. After collection, the magnetic plates close the discharge port, isolating the first dust collection frame from the air supply pipe. This prevents exhaust gas from entering the first dust collection frame and blowing away the collected small particulate impurities, ensuring stable and reliable collection of small particulate impurities.

[0018] 3. A reliable sealing system is formed by the fixed frame, circular plate, guide rod, sealing ring, spring and connecting plate. When cleaning any filter screen on the left, the air supply channel at the right end of the corresponding air supply pipe can be effectively closed. This prevents the exhaust gas from continuing to enter the corresponding air supply pipe when cleaning the filter screen, avoids interference with the cleaning work, ensures that the cleaning work is carried out in a relatively independent environment, and improves the efficiency and safety of the cleaning work.

[0019] 4. Through the combined design of the annular plate, rolling ball, baffle and limiting plate, the treatment area can be flexibly closed when cleaning any filter screen on the left side, further preventing exhaust gas from continuing to enter the corresponding gas supply pipe during the cleaning process and ensuring the smooth progress of the cleaning work. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the components such as the mounting shell, air inlet, and air outlet of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the components of the present invention, including the mounting shell, air outlet, and sealing plate.

[0023] Figure 4 This is a partial cross-sectional view of the mounting shell, air inlet, air outlet, and air delivery pipe components of the present invention.

[0024] Figure 5 This is a first partial cross-sectional view of the gas pipeline component of the present invention.

[0025] Figure 6 This is a three-dimensional structural diagram of the filter screen, first dust collection frame, second dust collection frame and support frame components of the present invention.

[0026] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, such as the motor, screw, and scraper.

[0027] Figure 8 This is a first partial cross-sectional view of the air supply pipe, the first dust collection frame, and the sealing plate component of the present invention.

[0028] Figure 9 This is a three-dimensional structural diagram of the components of the present invention, including the gas delivery pipe, discharge port, and magnetic plate.

[0029] Figure 10 This is a second partial cross-sectional view of the air supply pipe, the first dust collection frame, and the sealing plate component of the present invention.

[0030] Figure 11 This is a second partial cross-sectional view of the gas pipeline component of the present invention.

[0031] Figure 12 This is a three-dimensional structural diagram of the magnetic plate and guide rod components of the present invention.

[0032] In the attached diagrams: 1. Trolley, 2. Handle, 3. Blower, 4. Mounting housing, 5. Protective housing, 6. Air inlet, 7. Air outlet, 8. Air supply pipe, 81. Discharge port, 9. First dust collection frame, 91. Glass plate, 911. Sealing plate, 92. Second dust collection frame, 10. Filter screen, 11. Air inlet pipe, 111. Annular pipe, 112. Air outlet pipe, 113. Nozzle, 12. Support frame, 121. Motor, 122. Screw, 123. Scraper, 13. Guide plate, 131. Slide plate, 132. Magnetic block, 133. Magnetic plate, 134. Opening, 14. Fixing frame, 141. Circular plate, 1411. Guide rod, 142. Sealing ring, 143. Spring, 144. Connecting plate, 15. Annular plate, 151. Ball bearing, 152. Baffle, 153. Limiting plate. Detailed Implementation

[0033] Example: A dust separation and filtration device for a high-powered dust collection system in offshore oil fields, such as... Figures 1-12As shown, the device includes a trolley 1, handle 2, blower 3, mounting housing 4, protective housing 5, air inlet 6, air outlet 7, air supply pipe 8, first dust collection frame 9, glass plate 91, sealing plate 911, second dust collection frame 92, and filter screen 10. The handle 2 is welded to the upper rear side of the trolley 1. The blower 3 is bolted to the lower front side of the trolley 1, with an air outlet and an air intake connected to its front. The trolley 1, handle 2, and blower 3 together constitute a dust collection device. The mounting housing 4 is bolted to the upper rear side of the trolley 1 and located below and in front of the handle 2. The protective housing 5 is bolted to the mounting housing 4. Both are made of high-strength transparent material, providing both protection and easy viewing of the internal components. Inlet 6 is bolted to the right side of the inner bottom of the mounting shell 4, with its single inlet extending to the outside of the mounting shell 4. Two outlets, distributed front and rear, are located inside the mounting shell 4. The inlet of inlet 6 is equipped with a flange for easy and secure connection to external pipes. Outlet 7 is bolted to the left side of the inner bottom of the mounting shell 4, with its two front and rear inlets located inside the mounting shell 4. A single outlet extends to the outside of the mounting shell 4. Two parallel air supply pipes 8 are bolted between inlet 6 and outlet 7. The inlets of the two air supply pipes 8 are connected to the two outlets of inlet 6, and the outlets are connected to the two inlets of outlet 7. Each discharge port 81 is located on each air supply pipe 8. The bottom of each first dust collection frame 9 is directly connected to the air supply channel of the air supply pipe 8. Each first dust collection frame 9 is welded to the lower right end of each air supply pipe 8 and is located below the corresponding discharge port 81, directly connected to the air supply channel of the corresponding air supply pipe 8. The lower part of the first dust collection frame 9 extends to the outside of the protective shell 5. Each glass plate 91 is embedded and bonded to the side of each first dust collection frame 9 near the inner wall of the mounting shell 4. The second dust collection frame 92 is welded to the right side of the mounting shell 4. Its upper part extends to the inside of the air inlet 6, directly connected to the air supply channel of the air inlet 6, and its lower part extends to the outside of the mounting shell 4. The lower parts of the first dust collection frame 9 and the second dust collection frame 92 are bolted with sealing plates 911. The internal space of the first dust collection frame 9 and the second dust collection frame 92 is protected. The two filter screens 10 on the right are welded to the two outlet ends of the air inlet 6, and the two filter screens 10 on the left are welded to the middle of the two air supply pipes 8, and are located above the two discharge ports 81. The mounting shell 4, protective shell 5, air inlet 6, air outlet 7, air supply pipes 8 and filter screens 10 together constitute a dust separation and filtration device. The two filter screens 10 on the right and two on the left constitute a two-stage filtration system to achieve efficient separation of dust particles and impurities in the exhaust gas. It also includes an air blowing component and a cleaning component. The air blowing component and the cleaning component are both set on the two air supply pipes 8, with the air blowing component located to the left of the cleaning component.

[0034] like Figure 1 , Figure 4 and Figure 5As shown, the air blowing assembly includes an air inlet pipe 11, an annular pipe 111, an air outlet pipe 112, and a nozzle 113. Each annular pipe 111 is bolted to the outside of the left end of each air supply pipe 8. Each air inlet pipe 11 is welded to each annular pipe 111 and directly connects to the air supply channel of the annular pipe 111. The protective shell 5 has the same number of n-shaped grooves as the air inlet pipes 11, corresponding to the outer ends of two air inlet pipes 11 away from the annular pipes 111, so as to facilitate the connection of the pipes of the external air blower to the air inlet pipes 11 through the n-shaped grooves. The air inlet end of the air inlet pipe 11 is provided with a flange to facilitate a secure connection to the pipes of the external air blower. The six air outlet pipes 112 arranged in a ring array form a group. Each group of air outlet pipes 112 is welded to each annular pipe 111 and extends into the corresponding air supply pipe 8. Each nozzle 113 is welded to the air outlet end of each air outlet pipe 112 and is aligned with the left side of the corresponding filter screen 10.

[0035] like Figure 6 , Figure 7 and Figure 8 As shown, the cleaning assembly includes a support frame 12, a motor 121, a screw 122, and a scraper 123. Each support frame 12 is bolted to the left end of each air pipe 8. Each motor 121 is bolted to each support frame 12. The left end of each screw 122 is fixed to the right-facing output shaft of each motor 121 via a coupling, and the right end passes through the corresponding filter screen 10 and rotates with it. Each scraper 123 is welded to the right end of each screw 122, and its scraping surface forms a rotational contact with the right side of the corresponding filter screen 10. The scraping surface adopts an inclined structure design to ensure that during rotation, the inclined scraping surface will form a certain angle with the surface of the filter screen 10, thereby generating a greater shearing force and more effectively scraping away impurities on the surface of the filter screen 10. The scraping surface length of the scraper 123 is equal to the diameter length of the filter screen 10, ensuring that the scraping surface of the scraper 123 can fully contact the filter screen 10 when rotating.

[0036] like Figures 7-12As shown, it also includes a guide plate 13, a slide plate 131, a magnetic block 132, and a magnetic plate 133. Each guide plate 13 is welded to the right side of each motor 121 and forms a rotational engagement with the right end of the corresponding screw 122. The upper end of each slide plate 131 is threaded onto the outside of each screw 122 and slides in engagement with the corresponding guide plate 13. Each magnetic plate 133 is slidably disposed inside each air pipe 8 and forms a sliding contact with the corresponding first dust collection frame 9. Each magnetic block 132 is bonded to the lower end of each slide plate 131 and is spaced apart by a corresponding... The pipe wall of the gas supply pipe 8 is magnetically attracted to the corresponding magnetic plate 133, so that the magnetic plate 133 is indirectly fixed to the lower end of the corresponding slide plate 131 through the magnetic attraction relationship with the magnetic block 132. Each opening 134 is opened on the left side of each magnetic plate 133, so that the left side of the magnetic plate 133 is open and the right side is closed, and the closed right side of the magnetic plate 133 is directly above the corresponding discharge port 81, so that when the magnetic plate 133 is in the initial position, its closed side (i.e. the right side) can effectively close the corresponding gas supply pipe 8 and prevent the exhaust gas from entering the corresponding first dust collection frame 9.

[0037] like Figure 10 , Figure 11 and Figure 12 As shown, it also includes a fixing frame 14, a circular plate 141, a guide rod 1411, a sealing ring 142, a spring 143, and a connecting plate 144. Each fixing frame 14 is welded to the inside of the right end of each gas transmission pipe 8, and each circular plate 141 is welded to the left side of each fixing frame 14. The fixing frame 14 adopts an X-shaped structure design, which divides a portion of the gas transmission channel of the gas transmission pipe 8 into four equal parts, thereby effectively guiding the exhaust gas through the circular plate 141 and ensuring the smoothness of exhaust gas transmission. Each guide rod 1411 is welded to the upper part of the right end of each gas transmission pipe 8, and each sealing ring 142 slides... The magnetic plate 143 is installed inside the right end of each gas pipe 8 and is slidably connected to the corresponding guide rod 1411. Each circular plate 141 is located on the right side of each sealing ring 142, and its outer diameter matches the inner diameter of the sealing ring 142 to ensure that the two can form a stable and precise fit. Each spring 143 is sleeved on the outside of each guide rod 1411, and its left and right ends are fixedly connected to the corresponding sealing ring 142 and the corresponding gas pipe 8, respectively. Each connecting plate 144 is welded to the right side of each magnetic plate 133 and is fixedly connected to the lower right side of the corresponding sealing ring 142.

[0038] like Figure 11As shown, it also includes annular plates 15, rolling balls 151, baffles 152, and limiting plates 153. Each annular plate 15 is welded to the inside of the left end of each gas pipe 8. Each rolling ball 151 is rotatably disposed on the upper part of the left end of each gas pipe 8, with its upper half extending to the outside of the gas pipe 8 and its lower half extending to the inside of the gas pipe 8. Each baffle 152 is welded to the lower half area of ​​each rolling ball 151 and is embedded in the groove of the corresponding annular plate 15 to fit tightly against it. The left and right sides of the groove of the annular plate 15 are provided with inclined structures. This structure can guide the baffle 152 when it is embedded in the groove, avoiding jamming caused by collision or squeezing between the baffle 152 and the edge of the groove, and ensuring that the baffle 152 can be smoothly and accurately inserted into the groove. Each limiting plate 153 is bolted to the upper right side of each annular plate 15 and is located to the right of the corresponding baffle 152 and contacts it.

[0039] When this device is needed, the operator should first hold handle 2 and push the cart 1 to the work area. During the pushing process, the operator should pay close attention to the surrounding environment, avoid collisions with obstacles, and ensure the safety of personnel and the device.

[0040] Upon reaching the designated location, the operator first connects the prepared external pipe between the air inlet 6 and the air outlet of the blower 3, and then reliably connects the pipe of the external blower to the air inlet pipe 11. After the connection is completed, the blower 3 is started. After it starts running, it will generate a strong suction force to quickly draw the exhaust gas in the working area and send the exhaust gas into the air inlet 6 through the external pipe. When the exhaust gas enters the air inlet 6, it is discharged from its air outlet. During the discharge process, it first passes through the right-side filter screen 10 for preliminary filtration, intercepting large particulate impurities in the exhaust gas, so that these large particulate impurities fall directly into the second dust collection frame 92 below, realizing the preliminary separation of large particulate impurities in the exhaust gas.

[0041] After initial filtration, the exhaust gas enters the gas transmission pipe 8 and then undergoes secondary filtration through the left-side filter screen 10, which intercepts small particulate impurities in the exhaust gas. These small particulate impurities fall directly onto the right side of the magnetic plate 133. After secondary filtration, the exhaust gas has basically removed the particulate impurities and becomes clean gas.

[0042] When the clean gas passes through the annular plate 15, the resulting airflow impacts the baffle 152, causing the baffle 152 to rotate clockwise and open the annular plate 15, thus allowing the clean gas to pass smoothly through the annular plate 15 and be discharged from the gas supply pipe 8. Finally, it enters the interior of the outlet 7 through the inlet end and is discharged back to the working area from the outlet end of the outlet 7, completing the waste gas recycling process.

[0043] As time goes by, small particles of impurities gradually accumulate on the right side of the two left-side filter screens 10 and the right side of the magnetic plate 133. When it is necessary to clean the left front filter screen 10, start the external air blower. After it starts running, it sends gas into the front annular pipe 111 through the front air inlet pipe 11. The gas enters the front set of air outlet pipes 112 and is finally blown out forcefully from the corresponding nozzle 113 onto the left front filter screen 10. The strong airflow blows away the small particles of impurities accumulated on the right side of the left front filter screen 10, causing them to detach from the surface of the left front filter screen 10.

[0044] At the same time, the front motor 121 is started, and its output shaft drives the front screw 122 to rotate clockwise. The front scraper 123 rotates clockwise along with the front screw 122. During the rotation, small particulate impurities on the right side of the left front filter screen 10 are scraped off to further clean the remaining small particulate impurities.

[0045] At the same time, driven by the front screw 122, the front slide plate 131 drives the front magnetic block 132 to move to the right. Due to the magnetic effect, the front magnetic block 132 attracts the front magnetic plate 133 to move to the right through the pipe wall of the front air pipe 8. When the right side of the front magnetic plate 133 is closed and avoids the front discharge port 81, and the front opening 134 is aligned with the front discharge port 81, the front motor 121 is immediately shut off. At this time, the front opening 134 is connected to the front first dust collection frame 9, so that the small particles of impurities that were previously blown down and scraped off fall smoothly into the front first dust collection frame 9 for centralized collection.

[0046] After the right side of the left front filter screen 10 is cleaned, the front motor 121 is restarted again, and its output shaft is controlled to drive the front screw 122 to rotate counterclockwise. Driven by the front screw 122, the front slide plate 131 drives the front magnetic block 132 to move to the left. The front magnetic block 132 then attracts the front magnetic plate 133 to move to the left through the pipe wall of the front air supply pipe 8. When the front opening 134 avoids the front discharge port 81 and the right side of the front magnetic plate 133 is aligned with the front discharge port 81 to close it, the front motor 121 is turned off again. At this time, the front first dust collection frame 9 returns to the closed state and is isolated from the air supply channel of the front air supply pipe 8, preventing the exhaust gas from accidentally entering the front first dust collection frame 9 during the subsequent filtration process, thereby avoiding blowing away the collected small particulate impurities and ensuring that the small particulate impurities always remain stably in the front first dust collection frame 9.

[0047] As the front magnetic plate 133 moves to the right, it drives the front connecting plate 144 to move to the right as well. The front connecting plate 144 then drives the front sealing ring 142 to move to the right along the front guide rod 1411 and compresses the front spring 143 (the compression of the front spring 143 makes the upper part of the front sealing ring 142 move smoothly). When the front opening 134 is aligned with the front discharge port 81 and the front magnetic plate 133 stops moving, the front sealing ring 142 moves to the appropriate position and fits tightly with the front circular plate 141, thereby closing the air supply channel at the right end of the front air supply pipe 8 and preventing exhaust gas from continuing to enter the front air supply pipe 8 when cleaning the left front filter screen 10, thus avoiding interference with the cleaning work.

[0048] Meanwhile, once exhaust gas discharged from the rear air supply pipe 8 into the air outlet 7 enters the front air supply pipe 8, the entering exhaust gas forms an airflow that impacts the front baffle 152. Under the obstruction of the front limiting plate 153, the front baffle 152 is precisely embedded in the front annular plate 15 to close it, so that the processing area of ​​the left front filter screen 10 is completely sealed, further preventing exhaust gas from continuing to enter the front air supply pipe 8 when cleaning the left front filter screen 10, and ensuring the smooth progress of the cleaning work;

[0049] Similarly, when it is necessary to clean the left rear filter 10, simply repeat the above steps for cleaning the left front filter 10.

[0050] It is worth noting that when the magnetic plate 133 moves to the right, the small particles of impurities accumulated on its right side will be scraped off by the pipe wall of the air supply pipe 8, and then fall into the first dust collection frame 9 through the opening 134, thus achieving thorough cleaning of the impurities.

Claims

1. A dust separation and filtration device for a high-powered dust collection system in offshore oil fields, comprising a trolley (1), a handle (2), a blower (3), a mounting shell (4), a protective shell (5), an air inlet (6), an air outlet (7), air supply pipes (8), a first dust collection frame (9), a sealing plate (911), a second dust collection frame (92), and a filter screen (10). The handle (2) is fixed to the upper side of the trolley (1), the blower (3) is installed on the lower side of the trolley (1), the mounting shell (4) is installed on the upper side of the trolley (1) and located in front of the handle (2), the protective shell (5) is installed on the mounting shell (4), the air inlet (6) is installed on one side of the inner bottom end of the mounting shell (4), the air outlet (7) is installed on the other side of the inner bottom end of the mounting shell (4), and two air supply pipes (8) are arranged side by side between the air inlet (6) and the air outlet (7). The discharge port (81) is located at the bottom of each air pipe (8). Each first dust collection frame (9) is fixed to the lower part of one end of each air pipe (8) and located below the corresponding discharge port (81). The lower part of the first dust collection frame (9) extends to the outside of the protective shell (5). The second dust collection frame (92) is fixed to the right side of the mounting shell (4). Part of the second dust collection frame (92) extends into the inside of the air inlet (6), and the other part extends to the outside of the mounting shell (4). The lower parts of the first dust collection frame (9) and the second dust collection frame (92) are both equipped with sealing plates (911). Two filter screens (10) are fixed to the two air outlets of the air inlet (6) respectively. The other two filter screens (10) are fixed to the middle of the two air pipes (8) respectively and located above the two discharge ports (81). Its characteristics are: It also includes an air blowing assembly and a cleaning assembly, both of which are mounted on two air supply pipes (8). The cleaning assembly includes a support frame (12), a motor (121), a screw (122), and a scraper (123). Each support frame (12) is installed inside the other end of each air supply pipe (8), and each motor (121) is installed on each support frame (12). One end of each screw (122) is fixed to the right-facing output shaft of each motor (121) via a coupling, and the other end passes through the corresponding filter screen (10) and rotates with it. Each scraper (123) is fixed to the other end of each screw (122). The scraping surface length of the scraper (123) is equal to the diameter length of the filter screen (10), and its scraping surface forms a rotational contact with the other side of the corresponding filter screen (10). The scraping surface adopts an inclined structure design. It also includes a guide plate (13) and a sliding plate (131). Magnetic blocks (132) and magnetic plates (133) are provided. Each guide plate (13) is fixed to one side of each motor (121) and forms a rotational fit with the other end of the corresponding screw (122). One end of each slide plate (131) is threaded on the outside of each screw (122) and slides with the corresponding guide plate (13). Each magnetic plate (133) is slidably disposed inside each air pipe (8) and forms a sliding contact with the corresponding first dust collection frame (9). Each magnetic block (132) is fixed to the other end of each slide plate (131) and magnetically attracts the corresponding magnetic plate (133) through the pipe wall of the corresponding air pipe (8). Each opening (134) is opened on one side of each magnetic plate (133), so that one side of the magnetic plate (133) is open and the other side is closed, and the closed side of the magnetic plate (133) is directly above the corresponding discharge port (81).

2. The dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 1, characterized in that: The air blowing assembly includes an air inlet pipe (11), an annular pipe (111), an air outlet pipe (112), and a nozzle (113). Each annular pipe (111) is installed on the outside of the left end of the other end of each air supply pipe (8). Each air inlet pipe (11) is fixed to each annular pipe (111) and directly connected to the air supply channel of the annular pipe (111). The protective shell (5) has the same number of n-shaped slots as the air inlet pipe (11), and each slot corresponds to one end of two air inlet pipes (11). Multiple air outlet pipes (112) arranged in an annular array are grouped together. Each group of air outlet pipes (112) is fixed to each annular pipe (111) and extends into the corresponding air supply pipe (8). Each nozzle (113) is fixed to the air outlet end of each air outlet pipe (112) and is aligned with the side of the corresponding filter screen (10).

3. The dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 2, characterized in that: It also includes a fixing frame (14), a circular plate (141), a guide rod (1411), a sealing ring (142), a spring (143), and a connecting plate (144). Each fixing frame (14) is fixed inside one end of each gas pipe (8), each circular plate (141) is fixed to one side of each fixing frame (14), each guide rod (1411) is fixed to the upper part inside one end of each gas pipe (8), and each sealing ring (142) is slidably disposed inside one end of each gas pipe (8) and is connected to the connecting plate (144). The corresponding guide rods (1411) are slidably connected. Each circular plate (141) is located on one side of each sealing ring (142), and its outer diameter is matched with the inner diameter of the sealing ring (142). Each spring (143) is sleeved on the outside of each guide rod (1411), and its two ends are fixedly connected to the corresponding sealing ring (142) and the corresponding gas pipe (8) respectively. Each connecting plate (144) is fixedly connected to the right side of each magnetic plate (133) and fixedly connected to the corresponding sealing ring (142).

4. A dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 3, characterized in that: It also includes annular plates (15), rolling balls (151), baffles (152) and limiting plates (153). Each annular plate (15) is fixed inside the other end of each gas pipe (8). Each rolling ball (151) is rotatably disposed on the upper part of the other end of each gas pipe (8), with one half extending to the outside of the gas pipe (8) and the other half extending to the inside of the gas pipe (8). Each baffle (152) is fixed to the other half of each rolling ball (151) and is embedded in the groove of the corresponding annular plate (15) and fits it tightly. Each limiting plate (153) is installed on the upper side of each annular plate (15) and is located to the right of the corresponding baffle (152) and contacts it.

5. A dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 4, characterized in that: It also includes glass plates (91), each glass plate (91) being embedded and fixed to one side of each first dust collection frame (9).

6. A dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 5, characterized in that: Both the air inlet (6) and the air inlet pipe (11) are equipped with flanges.

7. A dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 6, characterized in that: The mounting bracket (14) adopts an X-shaped structure design, which divides a portion of the gas transmission channel of the gas transmission pipe (8) into four equal parts.

8. A dust separation and filtration device for a high-powered dust collection system in offshore oil fields according to claim 7, characterized in that: The groove of the annular plate (15) has inclined surfaces on both sides.

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