Dust filter for civil air defense ventilation

Abstract

The invention belongs to the technical field of civil air defense ventilation, and particularly relates to a civil air defense ventilation dust filter which comprises a main body mechanism, an inlet is fixedly connected to the outer wall of the main body mechanism, and a replacement box is fixedly connected to the top of the main body mechanism; the dust filter for civil air defense ventilation further comprises cleaning mechanisms, the outer walls of the cleaning mechanisms are fixedly connected with the inner wall of the main body mechanism, and the two cleaning mechanisms are symmetrically arranged. By arranging the main body mechanism, due to the fact that the dust filter is provided with multiple sets of filter screens, shutdown and ventilation keeping do not need to be conducted when the filter screens are taken out and replaced; as the dust accumulated on the surface of the filter screen closest to the inlet is the most, the filter screen is cleaned before, during and after replacement, the other surface of the filter screen can maintain normal filtering work, the two sides of the filter screen can be used, and the filter screen is replaced after being fully utilized by replacing the position of the filter screen, so that the maintenance cost is reduced, and the service life of the filter screen is prolonged. And the maintenance work of workers is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of civil air defense ventilation, in particular to a dust filter for civil air defense ventilation. Background Art

[0002] The purpose of building civil air defense ventilation facilities is to provide ventilation inside and outside the civil air defense project, deliver fresh air to the project facilities, dilute and remove harmful gases in the project, and ensure the normal survival of personnel in the underground project. The civil air defense ventilation facilities will filter the delivered air through the installed dust filter to achieve the air purification function.

[0003] The dust filter for civil air defense ventilation in the prior art achieves the effect of filtering and dust removal by installing a multi-layer filter structure inside. However, any type of filter needs to be disassembled and cleaned after being used for a period of time. The conventional cleaning method is only to remove the outer shell and then remove the internal filter, so disassembly is inconvenient. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting a technical solution: a dust filter for civil air defense ventilation, comprising: a main body mechanism, an outer wall of the main body mechanism is fixedly connected with an inlet, and a top of the main body mechanism is fixedly connected with a replacement box; The dust filter for civil air defense ventilation also includes: A cleaning mechanism, the outer wall of which is fixedly connected to the inner wall of the main body, and two cleaning mechanisms are symmetrically arranged; The cleaning mechanism includes a driving frame, an outer wall of the driving frame is fixedly connected to the inner wall of the main body mechanism, a scraping assembly is slidably connected to the inner wall of the driving frame, a third slide is provided on the opposite side of the driving frame, and a vibration assembly is slidably connected to the side of the driving frame close to the third slide. After a period of continued use, the inner filter is taken out and replaced so that both sides of the filter can be filtered. At the same time, the surface of the filter is cleaned in stages, which can extend the service life of the filter and reduce the frequency of replacement and cleaning by staff.

[0005] Furthermore, the main mechanism includes a box body, the outer wall of the box body is fixedly connected to the outer wall of the entrance, the inner wall of the box body is symmetrically provided with a first slideway, the inner wall of the box body is provided with a second slideway on a side close to the first slideway, the second slideway extends to the inner wall of the replacement box, the bottom of the box body is symmetrically provided with mounting grooves, the middle part of the inner wall of the box body is symmetrically provided with mounting grooves, the inner wall of the mounting groove is fixedly connected with an auxiliary cleaning component, the two sides of the mounting groove are provided with connecting grooves, the end of the connecting groove away from the mounting groove is connected to the outer wall of the dust collecting groove, and the box body A movable frame is symmetrically provided on one side of the inner wall close to the dust collecting groove, the outer wall of the movable frame is slidably connected to the inner wall of the box body, the inner wall of the movable frame is fixedly connected to a filter, and the outer wall of the filter is fixedly connected to a fixing strip. The filter is cleaned before, during and after replacement to ensure that the other side of the filter can maintain normal filtering work, and the filter is replaced after continued use for a period of time so that both sides of the filter can be used. By changing the position of the filter, the filter can be fully utilized before cleaning, thereby reducing maintenance costs and reducing maintenance work for staff.

[0006] Furthermore, the auxiliary cleaning component includes a lifting column, the bottom of the lifting column is fixedly connected to the inner wall of the mounting groove, the top of the lifting column is fixedly connected to a connecting plate, the outer wall of the connecting plate is symmetrically provided with a collecting bucket, the bottom of the collecting bucket is rotatably connected to the outer wall of the connecting plate, the inner wall of the collecting bucket is provided with a slot, the top of the connecting plate is symmetrically provided with a rotating rod, the bottom of the rotating rod is rotatably connected to the top of the connecting plate, and the top of the rotating rod is rotatably connected to a cleaning strip, so that the use surface of the filter is further cleaned during replacement, the dust shedding is enhanced, and the other side of the filter can be used normally after replacement.

[0007] Furthermore, the vibration assembly includes a moving block, the outer wall of the moving block is slidably connected to the outer wall of the driving frame, the moving blocks are symmetrically arranged, the opposite sides of the moving block are fixedly connected with a connecting rod, the inner wall of the connecting rod is provided with an air hole, the outer wall of the connecting rod is evenly provided with a nozzle, the outer wall of the nozzle is fixedly connected to the outer wall of the connecting rod, the inner wall of the connecting rod is evenly provided with a rotating block, the inner wall of the rotating block is rotatably connected to the outer wall of the connecting rod, the end of the rotating block away from the connecting rod is fixedly connected with a fixing sleeve, the end of the rotating block close to the fixing sleeve is fixedly connected with a spring, the end of the spring away from the rotating block is fixedly connected with an extension rod, the outer wall of the extension rod is slidably connected to the inner wall of the fixing sleeve, and the end of the extension rod away from the rotating block is fixedly connected with a knocking block, so that the knocking block is subjected to centrifugal force and hits toward the filter screen, causing the filter screen to vibrate and at the same time loosening the gap between the fixed bar and the filter screen, and the flaky debris is cleaned up under the drive of the high-pressure airflow of the nozzle to prevent the flaky debris from being clamped on the surface of the filter screen, reduce the filtering area of ​​the filter screen, and enhance the cleaning of the filter screen surface.

[0008] The outer wall of the cleaning block is connected to the inner wall of the movable frame by a sliding connection, and the outer wall of the cleaning block is in contact with the outer wall of the cleaning block, so that the cleaning block can be moved along the inner wall of the movable frame to clean the dust remaining on the inner wall of the movable frame.

[0009] The beneficial effects of the present invention are as follows: 1. After the filter has been used for a period of time, it needs to be disassembled and cleaned. The conventional cleaning method can only be performed by removing the outer shell and then removing the internal filter, so disassembly is inconvenient. The present invention sets a main body mechanism. Since the dust filter is provided with multiple groups of filter screens, there is no need to stop work when taking out and replacing them, so ventilation is maintained and replacement is more convenient. In addition, because the surface of the filter screen closest to the entrance accumulates the most dust, it needs to be cleaned multiple times before it can be continued to be used. The filter screen is cleaned before, during and after replacement to ensure that the other side of the filter screen can maintain normal filtering work. The filter screen can be replaced after continued use for a period of time so that both sides of the filter screen can be used. By changing the position of the filter screen, the filter screen can be fully utilized before cleaning, thereby reducing maintenance costs and reducing maintenance work for staff.

[0010] 2. The debris in the air includes not only dust, but also some flaky debris, which are easily sandwiched between the fixing strip and the filter, resulting in a reduction in the filtration area of ​​the filter, affecting the wind speed. The present invention provides a cleaning mechanism to perform graded cleaning on the surface of the filter, thereby maintaining the ventilation speed, extending the service life of the filter, and reducing the frequency of replacement and cleaning by staff.

[0011] 3. The present invention sets a scraping component, and the scraper cleans the surface of the filter to maintain the daily use of the filter. When scraping the dust, a certain amount of dust will accumulate on the surface of the scraper and the inner wall of the movable groove. When the rotating frame rotates to vertical, the cleaning block at the bottom moves along the inner wall of the movable groove to clean the scraper and the dust remaining on the inner wall of the movable groove, so as to maintain the cleaning effect of the scraper, and the cleaned dust will directly fall into the dust collecting groove for collection.

[0012] 4. After the dust accumulates to a certain extent, it is difficult for the scraper to directly scrape off the dust. In addition, since flaky debris may enter the air and be intercepted on the surface of the filter, the present invention provides a vibration component so that the knocking block is subjected to centrifugal force and hits the filter, causing the filter to vibrate and loosen the gap between the fixing bar and the filter. The flaky debris is cleaned up under the drive of the high-pressure airflow of the nozzle, preventing the flaky debris from being clamped on the surface of the filter, reducing the filtering area of ​​the filter, and enhancing the cleaning of the filter surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a cross-sectional view of the main mechanism of the present invention; Figure 4 It is a partial structural schematic diagram of the main mechanism of the present invention; Figure 5 It is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 6 is a schematic structural diagram of the auxiliary cleaning assembly of the present invention; Figure 7 is a cross-sectional view of the vibration assembly of the present invention; Figure 8 It is a cross-sectional view of the scraping assembly of the present invention.

[0014] In the figure: 1. main body; 101. box; 102. first slide; 103. second slide; 104. dust collecting tank; 105. connecting tank; 106. mounting tank; 107. auxiliary cleaning assembly; 1071. lifting column; 1072. connecting plate; 1073. collecting bucket; 1074. notch; 1075. rotating rod; 1076. cleaning bar; 108. moving frame; 109. filter screen; 110. fixing bar; 2. inlet; 3. replacement box; 4. cleaning Management mechanism; 401, drive frame; 402, third slide; 403, vibration assembly; 4031, moving block; 4032, connecting rod; 4033, air hole; 4034, nozzle; 4035, rotating block; 4036, fixing sleeve; 4037, spring; 4038, extension rod; 4039, knocking block; 404, scraping assembly; 4041, rotating frame; 4042, telescopic column; 4043, moving groove; 4044, scraper; 4045, cleaning block. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0016] Example 1, please refer to Figure 1-Figure 5 The present invention provides a technical solution: a dust filter for civil air defense ventilation is described as follows.

[0017] It comprises: a main body mechanism 1, an outer wall of the main body mechanism 1 is fixedly connected with an inlet 2, and a top of the main body mechanism 1 is fixedly connected with a replacement box 3; The dust filter for civil air defense ventilation also includes: A cleaning mechanism 4, the outer wall of which is fixedly connected to the inner wall of the main mechanism 1, and two cleaning mechanisms 4 are symmetrically arranged; During installation, multiple groups of main mechanisms 1 can be connected for multiple filtering. When working, the main mechanism 1 inhales external air from the inlet 2, and the dust and impurities in the air are filtered and self-cleaned inside the main mechanism 1. After a period of use, the built-in filter 109 of the main mechanism 1 needs to be repositioned and cleaned. The internal filter 109 with fewer air impurities is adjusted to the end close to the inlet 2, and the filter 109 near the inlet 2 is adjusted to the side close to the replacement box 3. The staff opens the adjustment mechanism to replace the filter 109 and replaces it with a new filter 109 for work. After a period of time, the filter 109 near the inlet 2 is repeated again.

[0018] The cleaning mechanism 4 includes a driving frame 401, the outer wall of the driving frame 401 is fixedly connected to the inner wall of the main mechanism 1, the inner wall of the driving frame 401 is slidably connected with a scraping component 404, a third slide 402 is opened on the opposite side of the driving frame 401, and a vibration component 403 is slidably connected to the side of the driving frame 401 close to the third slide 402.

[0019] At the beginning of use, one group of cleaning mechanisms 4 cleans the side of the filter 109 close to the inlet 2, and the other group cleans the filter 109 away from the inlet 2. Since the airflow direction inside the civil air defense ventilation duct is always unidirectional during use, the dust on the filter 109 only adheres to the same side of the filter 109. Before changing the position, the scraping component 404 and the vibration component 403 first clean the surface of the filter 109 close to the inlet 2. When the air passes through the filter 109, it is easy to carry not only dust but also some flaky debris. The flaky debris is easily sandwiched between the fixing bar 110 and the filter 109, resulting in a reduction in the filtering area of ​​the filter 109 and affecting the wind speed. At this time, the vibration component 403 moves downward along the driving frame 401, and while knocking the surface of the filter 109, the debris sandwiched between the filter 109 and the fixing bar 110 is blown away by high-pressure airflow, so that the dust and debris enter the dust collecting tank 104, or Blow out the box 101 directly, and the scraping component 404 scrapes the flocculent dust attached to the surface of the filter 109. After cleaning, the two groups of filters 109 are exchanged, and the filter 109 at the entrance 2 is exchanged to the inside, and the inner filter 109 is exchanged to the entrance 2. At this time, the exchanged filter 109 will face the unused side to the entrance 2. After continuing to use it for a period of time, the inner filter 109 is taken out and replaced so that both sides of the filter 109 can be filtered. At the same time, the surface of the filter 109 is graded and cleaned, which can extend the service life of the filter 109 and reduce the frequency of replacement and cleaning by the staff.

[0020] The main mechanism 1 includes a box body 101, the outer wall of the box body 101 is fixedly connected to the outer wall of the inlet 2, the inner wall of the box body 101 is symmetrically provided with a first slide 102, and the inner wall of the box body 101 is provided with a second slide 103 on one side close to the first slide 102, the first slide 102 is communicated with the second slide 103, and the second slide 103 extends to the inner wall of the replacement box 3. When replacing, the staff directly opens the replacement box 3 to take out the filter 109 and put in a new filter 109, the bottom of the box body 101 is symmetrically provided with mounting grooves 106, the middle part of the inner wall of the box body 101 is symmetrically provided with mounting grooves 106, the mounting grooves 106 support the two ends of the auxiliary cleaning component, and the inner wall of the mounting groove 106 is fixedly connected with an auxiliary cleaning component 107. During the replacement process, the auxiliary cleaning component 107 cleans the use surface of the filter 109 so that the filter 109 is replaced after its position. The other side can be used normally. Connecting grooves 105 are provided on both sides of the mounting groove 106. One end of the connecting groove 105 away from the mounting groove 106 is connected to the outer wall of the dust collecting groove 104. When the box body 101 starts to work, the dust collecting box is connected to an external blower to allow dust to enter the dust collecting groove 104 along the connecting groove 105. A movable frame 108 is symmetrically provided on one side of the inner wall of the box body 101 close to the dust collecting groove 104. The outer wall of the movable frame 108 is symmetrically provided with two protrusions, and the two protrusions are respectively connected to two sliders. The sliders are rotatably connected to the outer wall of the movable frame 108, and the outer wall of the movable frame 108 is slidably connected to the inner wall of the box body 101. The inner wall of the movable frame 108 is fixedly connected with a filter screen 109, and the outer wall of the filter screen 109 is fixedly connected with a fixing bar 110. The fixing bar 110 fixes the filter screen 109 in the movable frame 108, so that the filter screen 109 increases the fixing point and keeps the filter screen 109 stable.

[0021] During normal use, the moving frame 108 drives the two filter screens 109 to be located at the two ends of the first slideway 102 respectively. When the position needs to be changed, the slider drives the moving frame 108 to be close to each other along the first slideway 102. After moving a certain distance, the slider drives the moving frame 108 to rotate to a horizontal position, so that the use surfaces of the two filter screens 109 are respectively facing the inner wall of the box body 101, and continue to move along the first slideway 102. When passing through the auxiliary cleaning component 107, the use surface of the filter screen 109 is cleaned. After the two filter screens 109 are exchanged, the slider drives the moving frame 108 to rotate to 180 degrees, so that the use surface faces the inlet 2, and the filtering work continues. After both sides of the net 109 have been used, the staff will take it out and replace it. Since the dust filter is equipped with multiple groups of filter screens 109, there is no need to stop work when taking them out for replacement, and ventilation should be maintained. Because the surface of the filter screen 109 closest to the inlet 2 accumulates the most dust, it needs to be cleaned multiple times before it can be continued to be used. It is cleaned before, during and after replacement to ensure that the other side of the filter screen 109 can maintain normal filtering work. It is replaced after a period of continued use so that both sides of the filter screen 109 can be used. By changing the position of the filter screen 109, the filter screen 109 can be fully utilized before cleaning, thereby reducing maintenance costs and reducing the maintenance work of the staff.

[0022] Example 2, please refer to Figure 1-Figure 8 The present invention provides a technical solution: on the basis of the first embodiment, the auxiliary cleaning component 107 includes a lifting column 1071, the bottom of the lifting column 1071 is fixedly connected to the inner wall of the mounting groove 106, the top of the lifting column 1071 is fixedly connected to a connecting plate 1072, and the outer wall of the connecting plate 1072 is symmetrically provided with a collecting bucket 1073, the collecting bucket 1073 is triangular in shape, and its interior is a bucket-shaped space, so that the filter 109 can reduce the leakage of dust when it contacts the collecting bucket 1073, and the bottom of the collecting bucket 1073 is connected to the connecting plate 1072. The outer wall of the collecting bucket 1073 is rotatably connected, a notch 1074 is provided on the inner wall of the collecting bucket 1073, and the connecting groove 105 is connected to the outer wall of the collecting bucket 1073 by a hose, so that dust enters the connecting groove 105 through the hose, and the top of the connecting plate 1072 is symmetrically provided with rotating rods 1075, the bottom of the rotating rods 1075 is rotatably connected to the top of the connecting plate 1072, and the top of the rotating rods 1075 is rotatably connected to a cleaning strip 1076, and two groups of auxiliary cleaning components 107 are provided, and the upper auxiliary cleaning component 107 sucks the dust to the outside of the box body 101 through the blower.

[0023] When replacing the filter 109, the filter 109 remains horizontal and moves to the top of the auxiliary cleaning assembly 107. At this time, the lifting column 1071 rises, driving the connecting plate 1072 upward, so that the collecting bucket 1073 rotates until its outer wall contacts the bottom of the filter 109, and the rotating rod 1075 rotates to make the cleaning strip 1076 brush the surface of the filter 109 to clean it. The dust passes through the collecting bucket 1073 and enters the connecting groove 105. When replacing, the use surface of the filter 109 is further cleaned to enhance the shedding of dust, so that the other side of the filter 109 can be used normally after the replacement.

[0024] The vibration assembly 403 includes a moving block 4031, the outer wall of the moving block 4031 is slidably connected to the outer wall of the driving frame 401, two moving blocks 4031 are symmetrically arranged, the opposite side of the moving block 4031 is fixedly connected to a connecting rod 4032, the inner wall of the connecting rod 4032 is provided with an air hole 4033, the outer wall of the connecting rod 4032 is evenly provided with a nozzle 4034, the connecting rod 4032 is externally connected to a fan, so that the nozzle 4034 can spray a high-pressure airflow, the outer wall of the nozzle 4034 is fixedly connected to the outer wall of the connecting rod 4032, the inner wall of the connecting rod 4032 is evenly provided with a rotating block 4035, and the rotating block 4035 is arranged along the connecting rod 403 2 is freely rotated, the inner wall of the rotating block 4035 is rotatably connected with the outer wall of the connecting rod 4032, the end of the rotating block 4035 away from the connecting rod 4032 is fixedly connected with the fixing sleeve 4036, the end of the rotating block 4035 close to the fixing sleeve 4036 is fixedly connected with the spring 4037, the end of the spring 4037 away from the rotating block 4035 is fixedly connected with the extension rod 4038, the striking block 4039 is subjected to the centrifugal force to extend the spring 4037, in order to store force for striking the filter screen 109, the outer wall of the extension rod 4038 is slidably connected with the inner wall of the fixing sleeve 4036, and the end of the extension rod 4038 away from the rotating block 4035 is fixedly connected with the striking block 4039.

[0025] When the dust accumulates to a certain extent, it is difficult for the scraper to directly scrape off the dust, and since flaky debris may enter the air and be intercepted on the surface of the filter 109, the moving block 4031 moves along the driving frame 401 with the connecting rod 4032, and the rotating block 4035 rotates, so that the knocking block 4039 is subjected to centrifugal force and hits the filter 109, causing the filter 109 to vibrate and at the same time loosening the gap between the fixing bar 110 and the filter 109. The flaky debris is cleaned up under the drive of the high-pressure airflow of the nozzle 4034 to prevent the flaky debris from being clamped on the surface of the filter 109, thereby reducing the filtering area of ​​the filter 109 and enhancing the cleaning of the surface of the filter 109.

[0026] The scraping assembly 404 includes a rotating frame 4041, the outer wall of the rotating frame 4041 is slidably connected to the inner wall of the driving frame 401, the rotating frame 4041 rotates along the circular inner wall of the driving frame 401, the inner wall of the rotating frame 4041 is fixedly connected with a telescopic column 4042, and the end of the telescopic column 4042 close to the filter 109 is fixedly connected with a movable groove 4043, the outer wall of the movable groove 4043 is socketed with the inner wall of the rotating frame 4041, and the inner wall of the movable groove 4043 is symmetrically provided with scrapers 4044, the scrapers 4044 are made of rubber, the outer wall of the scrapers 4044 is fixedly connected to the inner wall of the movable groove 4043, and the inner wall of the movable groove 4043 is symmetrically provided with cleaning blocks 4045, the outer wall of the cleaning blocks 4045 is slidably connected to the inner wall of the movable groove 4043, and the outer wall of the cleaning blocks 4045 fits with the outer wall of the scraper blade 4044.

[0027] During daily use of the filter 109, the rotating frame 4041 rotates regularly, and then the telescopic column 4042 extends out, and the movable groove 4043 drives the scraper 4044 to be close to the filter 109, so that the scraper 4044 cleans the surface of the filter 109, and maintains the daily use of the filter 109. When scraping the dust, a certain amount of dust will accumulate on the surface of the scraper 4044 and the inner wall of the movable groove 4043. When the rotating frame 4041 rotates to vertical, the cleaning block 4045 at the bottom moves along the inner wall of the movable groove 4043 to clean the scraper 4044 and the dust remaining on the inner wall of the movable groove 4043, and maintains the cleaning effect of the scraper 4044, and the cleaned dust falls directly into the dust collecting groove 104 for collection.

[0028] The specific workflow is as follows: During normal use, the moving frame 108 drives the two filter screens 109 to be located at the two ends of the first slideway 102 respectively. When the position needs to be changed, the slider drives the moving frame 108 to be close to each other along the first slideway 102. After moving a certain distance, the slider drives the moving frame 108 to rotate to a horizontal position, so that the use surfaces of the two filter screens 109 are respectively facing the inner wall of the box body 101, and continue to move along the first slideway 102. When passing through the auxiliary cleaning component 107, the use surface of the filter screen 109 is cleaned. After the two filter screens 109 are exchanged, the slider drives the moving frame 108 to move to a horizontal position. The block drives the movable frame 108 to rotate 180 degrees, and the used surface faces the entrance 2 to continue filtering. After both sides of the inner filter 109 have been used, the staff will take it out and replace it. Since the dust filter is equipped with multiple groups of filter screens 109, there is no need to stop work when taking them out for replacement, and ventilation should be maintained. Because the surface of the filter screen 109 closest to the entrance 2 accumulates the most dust, it needs to be cleaned multiple times before it can continue to be used. It is cleaned before, during and after replacement to ensure that the other side of the filter screen 109 can maintain normal filtering work.

[0029] When cleaning is needed, one group of cleaning mechanisms 4 cleans the side of the filter 109 close to the inlet 2, and the other group cleans the filter 109 away from the inlet 2. Since the airflow direction inside the civil air defense ventilation duct is always unidirectional during use, the dust on the filter 109 only adheres to the same side of the filter 109. Before changing the position, the scraping component 404 and the vibration component 403 first clean the surface of the filter 109 close to the inlet 2. When air passes through the filter 109, it is easy to carry not only dust but also some flaky debris. The flaky debris is easily sandwiched between the fixing strip 110 and the filter 109, resulting in a reduction in the filtering area of ​​the filter 109, which affects the wind speed. At this time, the vibration component 403 moves downward along the driving frame 401, and while knocking the surface of the filter 109, it will be sandwiched between the filter 109 and the fixing strip 110. The debris in the middle of 10 is blown by high-pressure airflow, so that the dust and debris enter the dust collecting tank 104, or are directly blown out of the box body 101, and the scraping component 404 scrapes the flocculent dust attached to the surface of the filter 109. After cleaning, the two groups of filters 109 are exchanged, and the filter 109 at the entrance 2 is exchanged to the inside, and the inner filter 109 is exchanged to the entrance 2. At this time, the exchanged filter 109 will face the unused side to the entrance 2. After a period of continued use, the inner filter 109 is taken out and replaced.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A dust filter for civil air defense ventilation, specifically comprising: The main body mechanism (1) is characterized in that: an inlet (2) is fixedly connected to the outer wall of the main body mechanism (1), and a replacement box (3) is fixedly connected to the top of the main body mechanism (1); The dust filter for civil air defense ventilation also includes: A cleaning mechanism (4), the outer wall of the cleaning mechanism (4) being fixedly connected to the inner wall of the main body mechanism (1), and two cleaning mechanisms (4) are symmetrically arranged; The cleaning mechanism (4) comprises a driving frame (401), the outer wall of the driving frame (401) being fixedly connected to the inner wall of the main body mechanism (1), the inner wall of the driving frame (401) being slidably connected to a scraping assembly (404), a third slideway (402) being provided on the opposite side of the driving frame (401), and a vibration assembly (403) being slidably connected to a side of the driving frame (401) close to the third slideway (402).

2. The dust filter for civil air defense ventilation according to claim 1, characterized in that: The main body mechanism (1) comprises a box body (101), the outer wall of the box body (101) is fixedly connected to the outer wall of the inlet (2), the inner wall of the box body (101) is symmetrically provided with a first slideway (102), the inner wall of the box body (101) is provided with a second slideway (103) on a side close to the first slideway (102), the bottom of the box body (101) is symmetrically provided with a mounting groove (106), and the middle of the inner wall of the box body (101) is symmetrically provided with a mounting groove (106).

3. The dust filter for civil air defense ventilation according to claim 2, characterized in that: An auxiliary cleaning component (107) is fixedly connected to the inner wall of the installation groove (106), connecting grooves (105) are provided on both sides of the installation groove (106), a movable frame (108) is symmetrically arranged on one side of the inner wall of the box body (101) close to the dust collecting groove (104), the outer wall of the movable frame (108) is slidably connected to the inner wall of the box body (101), a filter screen (109) is fixedly connected to the inner wall of the movable frame (108), and a fixing strip (110) is fixedly connected to the outer wall of the filter screen (109).

4. The dust filter for civil air defense ventilation according to claim 3, characterized in that: The auxiliary cleaning component (107) comprises a lifting column (1071), the bottom of the lifting column (1071) is fixedly connected to the inner wall of the mounting groove (106), the top of the lifting column (1071) is fixedly connected to a connecting plate (1072), the outer wall of the connecting plate (1072) is symmetrically provided with a collecting bucket (1073), and the bottom of the collecting bucket (1073) is rotatably connected to the outer wall of the connecting plate (1072).

5. The dust filter for civil air defense ventilation according to claim 4, characterized in that: The inner wall of the collecting bucket (1073) is provided with a notch (1074), and a rotating rod (1075) is symmetrically arranged on the top of the connecting plate (1072). The bottom of the rotating rod (1075) is rotatably connected to the top of the connecting plate (1072), and the top of the rotating rod (1075) is rotatably connected to a cleaning strip (1076).

6. The dust filter for civil air defense ventilation according to claim 1, characterized in that: The vibration assembly (403) comprises a moving block (4031), the outer wall of which is slidably connected to the outer wall of the driving frame (401), two moving blocks (4031) are symmetrically arranged, and connecting rods (4032) are fixedly connected to the opposite sides of the moving blocks (4031), the inner wall of the connecting rod (4032) is provided with air holes (4033), and the outer wall of the connecting rod (4032) is evenly provided with nozzles (4034), and the outer wall of the nozzles (4034) is fixedly connected to the outer wall of the connecting rod (4032).

7. The dust filter for civil air defense ventilation according to claim 6, characterized in that: The inner wall of the connecting rod (4032) is evenly provided with rotating blocks (4035), the inner wall of the rotating block (4035) is rotatably connected to the outer wall of the connecting rod (4032), one end of the rotating block (4035) away from the connecting rod (4032) is fixedly connected to a fixing sleeve (4036), one end of the rotating block (4035) close to the fixing sleeve (4036) is fixedly connected to a spring (4037), one end of the spring (4037) away from the rotating block (4035) is fixedly connected to an extension rod (4038), the outer wall of the extension rod (4038) is slidably connected to the inner wall of the fixing sleeve (4036), and one end of the extension rod (4038) away from the rotating block (4035) is fixedly connected to a knocking block (4039).

8. The dust filter for civil air defense ventilation according to claim 6, characterized in that: The scraping assembly (404) comprises a rotating frame (4041), the outer wall of the rotating frame (4041) being slidably connected to the inner wall of the driving frame (401), the inner wall of the rotating frame (4041) being fixedly connected to a telescopic column (4042), one end of the telescopic column (4042) close to the filter screen (109) being fixedly connected to a movable groove (4043), the outer wall of the movable groove (4043) being sleeved with the inner wall of the rotating frame (4041).

9. The dust filter for civil air defense ventilation according to claim 8, characterized in that: The inner wall of the movable groove (4043) is symmetrically provided with a scraper (4044), the outer wall of the scraper (4044) is fixedly connected to the inner wall of the movable groove (4043), the inner wall of the movable groove (4043) is symmetrically provided with a cleaning block (4045), the outer wall of the cleaning block (4045) is slidably connected to the inner wall of the movable groove (4043), and the outer wall of the cleaning block (4045) is in contact with the outer wall of the scraper (4044).

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