Waste gas purification device suitable for environmental protection engineering construction

Abstract

The invention relates to the technical field of waste gas purification, and discloses a waste gas purification device suitable for environmental protection engineering construction.The waste gas purification device comprises a separation frame, a sealing door is hinged to the surface of the separation frame, an air inlet frame communicates with the surface of the separation frame, a vertical pipe communicates with the bottom of the separation frame, and a supporting disc is fixedly connected to the bottom of the vertical pipe; a mounting ring is rotatably connected to the inner wall of the supporting disc, rolling wheels are fixedly connected to the inner wall of the mounting ring, a top frame is fixedly connected to the top of the separation frame, and an air exhaust component is arranged in the separation frame. The supporting disc is arranged at the bottom of the vertical pipe, the separating frame is supported through the supporting disc so that the separating frame can be arranged, the mounting ring is arranged in the supporting disc to position the rolling wheels so that the position of the separating frame can be adjusted through the rolling wheels, and an air pump is started to start operation in the vertical pipe; suction force generated by the air pump can be transmitted into the arc frame through the transmission frame, and the arc frame transmits the suction force to the outer end of the separation frame through the air inlet frame.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification, and in particular to a waste gas purification device suitable for environmental protection engineering construction. Background Art

[0002] Environmental protection engineering construction refers to taking various measures and technologies during the construction and development process to reduce pollution and damage to the environment and protect the sustainable development of the ecological environment. During the project construction process, full consideration should be given to ecological environmental protection, and the destruction of ecological balance should be avoided as much as possible, while strengthening environmental monitoring;

[0003] A large number of mechanized facilities are needed in the construction process. Mechanical facilities will emit exhaust gas during operation. The accumulation of a large amount of exhaust gas can easily cause air pollution. At present, exhaust gas purification devices are generally used to purify the exhaust gas in the air. However, the exhaust gas discharged by mechanical facilities will contain particles. Once the particles enter the exhaust gas purification device, it is easy to cause blockage. Summary of the invention

[0004] The purpose of the present invention is to provide a waste gas purification device suitable for environmental protection engineering construction to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an exhaust gas purification device suitable for environmental protection engineering construction, comprising a separation frame, a sealing door is hinged on the surface of the separation frame, an air intake frame is connected to the surface of the separation frame, a vertical pipe is connected to the bottom of the separation frame, a support plate is fixedly connected to the bottom of the vertical pipe, a mounting ring is rotatably connected to the inner wall of the support plate, a roller is fixedly connected to the inner wall of the mounting ring, a top frame is fixedly connected to the top of the separation frame, an air extraction component is arranged inside the separation frame, and a cleaning component is arranged inside the separation frame;

[0007] The air extraction component includes a filter frame, the bottom of the filter frame is fixedly connected to the bottom of the inner wall of the separation frame, the inner wall of the vertical pipe is fixedly connected to an air pump, the bottom of the air pump is connected to an air outlet pipe, the end of the air outlet pipe away from the air pump is connected to an exhaust gas purification device, the surface of the exhaust gas purification device is fixedly connected to a fixing frame, the end of the fixing frame is fixedly connected to a connecting ring, the inner wall of the connecting ring is connected to a surface fixing plate of the vertical pipe, the top of the air pump is connected to a transmission frame, and the surface of the transmission frame is connected to an arc frame.

[0008] Furthermore, the top of the filter frame is fixedly connected to the top of the inner wall of the separation frame, the end of the air outlet pipe away from the air pump passes through the vertical pipe and extends to the outer end of the vertical pipe, and the transmission frame is located at the inner center of the separation frame.

[0009] Further, the number of the arc-shaped frames is set to four. The four arc-shaped frames are arranged circumferentially with the transmission frame as the center. One end of the arc-shaped frame away from the transmission frame contacts the inner wall of the filtering frame, and the arc-shaped frame corresponds to the air intake frame.

[0010] Further, the cleaning component includes a motor. The bottom of the motor is fixedly connected to the top of the separation frame. The output end of the motor is fixedly connected to a rotating frame. One end of the rotating frame is fixedly connected to a stabilizing ring. A right-angle plate is fixedly connected to the surface of the stabilizing ring. A limiting ring is fixedly connected to the bottom of the right-angle plate. A cross-hole rod is slidably connected to the inner wall of the limiting ring. A cross rod is inserted into the inner wall of the cross-hole rod. A scraping plate is fixedly connected to the bottom of the cross rod. A feed hole is formed in the surface of the scraping plate. A collection hole is formed in the lower surface of the scraping plate. A collection component is arranged inside the scraping plate.

[0011] Further, the output end of the motor penetrates through the top frame and extends to the inside of the top frame. The rotating frame is located inside the top frame. The limiting ring is located at the top of the inner wall of the separation frame. One end of the cross-hole rod penetrates through the limiting ring and extends to the outer end of the limiting ring. The scraping plate is located inside the separation frame.

[0012] Further, the surface of the scraping plate contacts the surface of the filtering frame. The number of the scraping plates is set to four. The four scraping plates are arranged circumferentially with the filtering frame as the center. The bottom of the feed hole communicates with the top of the collection hole. The bottom of the scraping plate contacts the bottom of the inner wall of the separation frame.

[0013] Further, the collection component includes a storage frame. A positioning plate is fixedly connected to the inner wall of the storage frame. One end of the positioning plate away from the storage frame is fixedly connected to a sliding frame. A spring is fixedly connected to the top of the sliding frame. A sliding hole is formed in the surface of the scraping plate. A groove is formed in the bottom of the inner wall of the scraping plate.

[0014] Further, the top of the spring is fixedly connected to the top of the inner wall of the sliding hole. The inner wall of the sliding frame is slidably connected to the inner wall of the sliding hole.

[0015] Further, one end of the sliding frame extends to the outer end of the sliding hole. The sliding hole is located at one end of the scraping plate away from the filtering frame. The surface of the storage frame contacts the inner wall of the groove.

[0016] The present invention has the following beneficial effects:

[0017] The present invention provides a supporting plate at the bottom of the vertical pipe, and the separation frame is supported by the supporting plate so that the separation frame can be placed. A mounting ring is provided inside the supporting plate to position the roller so that the position of the separation frame can be adjusted by the roller. The air pump is started to work inside the vertical pipe, and the suction generated by the air pump will be transmitted to the inside of the arc frame through the transmission frame, and the arc frame will transmit the suction to the outer end of the separation frame through the air intake frame. At this time, the air intake frame can suck the exhaust gas in the construction site into the interior of the separation frame, and the exhaust gas entering the interior of the separation frame will enter the interior of the arc frame after being filtered by the filter frame. The filter frame can filter particles in the exhaust gas to prevent particles from entering the interior of the exhaust purification device with the exhaust gas and causing blockage. The filtered exhaust gas will enter the interior of the exhaust purification device through the connection between the air pump and the exhaust pipe, and the exhaust gas purification device is used to purify the exhaust gas in the construction site.

[0018] The present invention starts a motor to drive the rotating frame to rotate inside the top frame. When the rotating frame rotates, the connection between the stabilizing ring and the right-angle plate drives the limiting ring to rotate. When the limiting ring rotates, the scraper is driven to rotate by the plugging of the cross hole rod and the cross rod. When the scraper rotates, the surface of the filter frame can be cleaned, so that particles attached to the surface of the filter frame can be scraped off, avoiding the accumulation of particles on the surface of the filter frame affecting the exhaust gas circulation. The scraped particles will enter the internal storage of the scraper through the feed hole, and the particles that fall into the separation frame will enter the internal storage of the scraper through the collecting hole.

[0019] The particles entering the scraper of the present invention will be stored in the storage rack. When the particles in the storage rack need to be processed, the sealing door is opened. After the sealing door is opened, the cross-hole rod is pushed to move upward. When the cross-hole rod is separated from the cross rod, the scraper can be taken out from the inside of the separation rack through the sealing door, and the sliding rack is pushed to move upward. The sliding rack will drive the storage rack to move upward through the positioning plate. After the scraper is tilted, the sliding rack is released. The sliding rack pushes the storage rack to collide with the groove through the elasticity of the spring. The collision will cause the particles inside the storage rack to fall off quickly, so that the cleaned particles can be stored.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the separation rack of the present invention;

[0024] Figure 3 This is a schematic overall structure view of the air extraction component of the present invention;

[0025] Figure 4 This is another schematic structure view of the air extraction component of the present invention;

[0026] Figure 5 This is a schematic overall structure view of the cleaning component of the present invention;

[0027] Figure 6 This is another schematic structure view of the cleaning component of the present invention;

[0028] Figure 7 This is a schematic overall structure view of the collection component of the present invention.

[0029] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0030] In the figure: 1. Separation rack; 2. Air intake rack; 3. Vertical pipe; 4. Installation ring; 5. Roller; 6. Support disk; 7. Sealing door; 8. Top rack; 9. Air extraction component; 10. Cleaning component; 11. Collection component; 20. Filter rack; 21. Connecting ring; 22. Outlet pipe; 23. Fixed rack; 24. Tail gas purification device; 25. Air pump; 26. Arc rack; 27. Transmission rack; 30. Motor; 31. Rotating rack; 32. Stabilizing ring; 33. Right-angle plate; 34. Cross bar; 35. Limiting ring; 36. Cross-hole rod; 37. Feeding hole; 38. Scraper; 39. Collection hole; 40. Slide hole; 41. Spring; 42. Sliding rack; 43. Groove; 44. Positioning plate; 45. Storage rack. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-7As shown in the figure, the present invention is an exhaust gas purification device suitable for environmental protection engineering construction, including a separation frame 1. A sealing door 7 is hinged on the surface of the separation frame 1. An air intake frame 2 is communicated with the surface of the separation frame 1. A vertical pipe 3 is communicated with the bottom of the separation frame 1. A support disk 6 is fixedly connected to the bottom of the vertical pipe 3. An installation ring 4 is rotatably connected to the inner wall of the support disk 6. A roller 5 is fixedly connected to the inner wall of the installation ring 4. A top frame 8 is fixedly connected to the top of the separation frame 1. An air extraction component 9 is arranged inside the separation frame 1. A cleaning component 10 is arranged inside the separation frame 1;

[0033] The air extraction component 9 includes a filter frame 20. The bottom of the filter frame 20 is fixedly connected to the bottom inner wall of the separation frame 1. An air pump 25 is fixedly connected to the inner wall of the vertical pipe 3. An air outlet pipe 22 is communicated with the bottom of the air pump 25. One end of the air outlet pipe 22 far away from the air pump 25 is communicated with an exhaust gas purification device 24. A fixing frame 23 is fixedly connected to the surface of the exhaust gas purification device 24. An end of the fixing frame 23 is fixedly connected to a connecting ring 21. The inner wall of the connecting ring 21 is fixedly connected to the surface fixing plate of the vertical pipe 3. The top of the air pump 25 is communicated with a transmission frame 27. An arc frame 26 is communicated with the surface of the transmission frame 27.

[0034] The top of the filter frame 20 is fixedly connected to the top inner wall of the separation frame 1. One end of the air outlet pipe 22 far away from the air pump 25 penetrates through the vertical pipe 3 and extends to the outer end of the vertical pipe 3. The transmission frame 27 is located at the center inside the separation frame 1.

[0035] The number of the arc frames 26 is set to four. The present invention is provided with a support disk 6 at the bottom of the vertical pipe 3 to support the separation frame 1 so as to place the separation frame 1. An installation ring 4 is arranged inside the support disk 6 to position the roller 5 so as to adjust the position of the separation frame 1 through the roller 5. Start the air pump 25 to start working inside the vertical pipe 3. The suction generated by the air pump 25 will be transmitted to the inside of the arc frame 26 through the transmission frame 27. The arc frame 26 transmits the suction to the outer end of the separation frame 1 through the air intake frame 2. At this time, the air intake frame 2 can suck the exhaust gas at the construction site into the inside of the separation frame 1. The exhaust gas entering the inside of the separation frame 1 will enter the inside of the arc frame 26 after being filtered by the filter frame 20. The filter frame 20 can filter the particles in the exhaust gas to prevent the particles from entering the inside of the exhaust gas purification device 24 along with the exhaust gas and causing blockage. The filtered exhaust gas will enter the inside of the exhaust gas purification device 24 through the connection between the air pump 25 and the air outlet pipe 22. The exhaust gas purification device 24 is used to purify the exhaust gas at the construction site. The four arc frames 26 are arranged in a circumferential manner with the transmission frame 27 as the center. One end of the arc frame 26 far away from the transmission frame 27 contacts the inner wall of the filter frame 20. The arc frame 26 corresponds to the air intake frame 2.

[0036] The cleaning component 10 includes a motor 30. The bottom of the motor 30 is fixedly connected to the top of the separation frame 1. The output end of the motor 30 is fixedly connected to a rotating frame 31. The end of the rotating frame 31 is fixedly connected to a stabilizing ring 32. The surface of the stabilizing ring 32 is fixedly connected to a right-angle plate 33. The bottom of the right-angle plate 33 is fixedly connected to a limiting ring 35. The inner wall of the limiting ring 35 is slidably connected to a cross-hole rod 36. A cross rod 34 is inserted into the inner wall of the cross-hole rod 36. The bottom of the cross rod 34 is fixedly connected to a scraper 38. A feed hole 37 is formed on the surface of the scraper 38. A collection hole 39 is formed on the lower surface of the scraper 38. A collection component 11 is arranged inside the scraper 38.

[0037] The output end of the motor 30 penetrates through the top frame 8 and extends to the inside of the top frame 8. In the present invention, when the motor 30 is started, it drives the rotating frame 31 to rotate inside the top frame 8. When the rotating frame 31 rotates, it drives the limiting ring 35 to rotate through the connection between the stabilizing ring 32 and the right-angle plate 33. When the limiting ring 35 rotates, it drives the scraper 38 to rotate through the insertion between the cross-hole rod 36 and the cross rod 34. When the scraper 38 rotates, it will clean the surface of the filter frame 20, so that the particles attached to the surface of the filter frame 20 can be scraped off, avoiding the accumulation of particles on the surface of the filter frame 20 and affecting the exhaust gas flow. The scraped particles will enter the inside of the scraper 38 through the feed hole 37 for storage. At the same time, the particles falling into the separation frame 1 will enter the inside of the scraper 38 through the collection hole 39 for storage. The rotating frame 31 is located inside the top frame 8. The limiting ring 35 is located at the top of the inner wall of the separation frame 1. The end of the cross-hole rod 36 penetrates through the limiting ring 35 and extends to the outside of the limiting ring 35. The scraper 38 is located inside the separation frame 1.

[0038] The surface of the scraper 38 is in contact with the surface of the filter frame 20. The number of the scrapers 38 is set to four. The four scrapers 38 are arranged in a circumferential manner with the filter frame 20 as the center. The bottom of the feed hole 37 is in communication with the top of the collection hole 39. The bottom of the scraper 38 is in contact with the bottom of the inner wall of the separation frame 1.

[0039] The collection component 11 includes a storage frame 45. A positioning plate 44 is fixedly connected to the inner wall of the storage frame 45. One end of the positioning plate 44 away from the storage frame 45 is fixedly connected to a sliding frame 42. A spring 41 is fixedly connected to the top of the sliding frame 42. A sliding hole 40 is formed on the surface of the scraper 38. A groove 43 is formed at the bottom of the inner wall of the scraper 38.

[0040] The top of the spring 41 is fixedly connected to the top of the inner wall of the sliding hole 40. The inner wall of the sliding frame 42 is slidably connected to the inner wall of the sliding hole 40.

[0041] The end of the sliding frame 42 extends to the outer end of the sliding hole 40. The particles that enter the inside of the scraping plate 38 in the present invention will be stored inside the storage rack 45. When it is necessary to process the particles in the storage rack 45, open the sealing door 7. After opening the sealing door 7, push the cross-hole rod 36 upward. When the cross-hole rod 36 is separated from the cross rod 34, the scraping plate 38 can be taken out from the inside of the separation rack 1 through the sealing door 7. Push the sliding frame 42 upward. The sliding frame 42 will drive the storage rack 45 upward through the positioning plate 44. After placing the scraping plate 38 obliquely, release the sliding frame 42. The sliding frame 42 elastically pushes the storage rack 45 through the spring 41 to collide with the groove 43. The collision will cause the particles inside the storage rack 45 to quickly fall off, so as to store the cleaned particles. The sliding hole 40 is located at one end of the scraping plate 38 away from the filter rack 20. The surface of the storage rack 45 contacts the inner wall of the groove 43.

[0042] In use, a support disk 6 is arranged at the bottom of the vertical pipe 3 to support the separation rack 1 through the support disk 6 for placing the separation rack 1. An installation ring 4 is arranged inside the support disk 6 to position the rollers 5, so as to adjust the position of the separation rack 1 through the rollers 5. Start the air pump 25 to start working inside the vertical pipe 3. The suction force generated by the air pump 25 will be transmitted to the inside of the arc rack 26 through the transmission rack 27. The arc rack 26 transmits the suction force to the outer end of the separation rack 1 through the air inlet rack 2. At this time, the air inlet rack 2 can suck the waste gas at the construction site into the separation rack 1. The waste gas entering the separation rack 1 will enter the arc rack 26 after being filtered by the filter rack 20. The filter rack 20 can filter the particles in the tail gas waste gas to prevent the particles from entering the tail gas purification device 24 along with the tail gas waste gas and causing blockage. The filtered tail gas waste gas will enter the tail gas purification device 24 through the connection between the air pump 25 and the air outlet pipe 22, and the tail gas waste gas at the construction site is purified by the tail gas purification device 24. Start the motor 30 to drive the rotating rack 31 to rotate inside the top rack 8. When the rotating rack 31 rotates, it drives the limiting ring 35 to rotate through the connection between the stabilizing ring 32 and the right-angle plate 33. When the limiting ring 35 rotates, it drives the scraping plate 38 to rotate through the insertion of the cross-hole rod 36 and the cross rod 34. When the scraping plate 38 rotates, it will clean the surface of the filter rack 20, so that the particles attached to the surface of the filter rack 20 can be scraped off, preventing the particles from accumulating on the surface of the filter rack 20 and affecting the waste gas flow. The scraped particles will enter the inside of the scraping plate 38 through the feed hole 37 for storage. At the same time, the particles falling into the separation rack 1 will enter the inside of the scraping plate 38 through the collection hole 39 for storage. The particles entering the inside of the scraping plate 38 will be stored inside the storage rack 45. When it is necessary to process the particles in the storage rack 45, open the sealing door 7. After opening the sealing door 7, push the cross-hole rod 36 upward. When the cross-hole rod 36 is separated from the cross rod 34, the scraping plate 38 can be taken out of the separation rack 1 through the sealing door 7. Push the sliding rack 42 upward. The sliding rack 42 will drive the storage rack 45 to move upward through the positioning plate 44. After the scraping plate 38 is placed obliquely, release the sliding rack 42. The sliding rack 42 elastically pushes the storage rack 45 to collide with the groove 43 through the spring 41. The collision will cause the particles inside the storage rack 45 to fall off quickly for storing the cleaned particles.

[0043] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A waste gas purification device suitable for environmental protection engineering construction, comprising a separation frame (1), characterized in that: The surface of the separation frame (1) is hinged with a sealing door (7), the surface of the separation frame (1) is connected to an air intake frame (2), the bottom of the separation frame (1) is connected to a vertical pipe (3), the bottom of the vertical pipe (3) is fixedly connected to a support plate (6), the inner wall of the support plate (6) is rotatably connected to a mounting ring (4), the inner wall of the mounting ring (4) is fixedly connected to a roller (5), the top of the separation frame (1) is fixedly connected to a top frame (8), an exhaust component (9) is provided inside the separation frame (1), and a cleaning component (10) is provided inside the separation frame (1); The air extraction component (9) comprises a filter frame (20), the bottom of which is fixedly connected to the bottom of the inner wall of the separation frame (1), the inner wall of the vertical pipe (3) is fixedly connected to an air pump (25), the bottom of the air pump (25) is connected to an air outlet pipe (22), the end of the air outlet pipe (22) away from the air pump (25) is connected to an exhaust gas purification device (24), the surface of the exhaust gas purification device (24) is fixedly connected to a fixing frame (23), the end of the fixing frame (23) is fixedly connected to a connecting ring (21), the inner wall of the connecting ring (21) is connected to a surface fixing plate of the vertical pipe (3), the top of the air pump (25) is connected to a transmission frame (27), and the surface of the transmission frame (27) is connected to an arc frame (26).

2. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 1 is characterized in that: The top of the filter frame (20) is fixedly connected to the top of the inner wall of the separation frame (1); the end of the air outlet pipe (22) away from the air pump (25) passes through the vertical pipe (3) and extends to the outer end of the vertical pipe (3); and the transmission frame (27) is located at the inner center of the separation frame (1).

3. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 2 is characterized in that: The number of the circular arc frames (26) is four, and the four circular arc frames (26) are arranged with the transmission frame (27) as the central circumference. One end of the circular arc frame (26) away from the transmission frame (27) contacts the inner wall of the filter frame (20), and the circular arc frame (26) corresponds to the air intake frame (2).

4. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 3 is characterized in that: The cleaning component (10) comprises a motor (30), the bottom of the motor (30) is fixedly connected to the top of the separation frame (1), the output end of the motor (30) is fixedly connected to a rotating frame (31), the end of the rotating frame (31) is fixedly connected to a stabilizing ring (32), the surface of the stabilizing ring (32) is fixedly connected to a right-angle plate (33), the bottom of the right-angle plate (33) is fixedly connected to a limiting ring (35), the inner wall of the limiting ring (35) is slidably connected to a cross-hole rod (36), the inner wall of the cross-hole rod (36) is plugged with a cross rod (34), the bottom of the cross rod (34) is fixedly connected to a scraper (38), the surface of the scraper (38) is provided with a feeding hole (37), the lower surface of the scraper (38) is provided with a collecting hole (39), and the scraper (38) is provided with a collecting component (11) inside.

5. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 4 is characterized in that: The output end of the motor (30) passes through the top frame (8) and extends to the inside of the top frame (8); the rotating frame (31) is located inside the top frame (8); the limiting ring (35) is located at the top of the inner wall of the separation frame (1); the end of the cross hole rod (36) passes through the limiting ring (35) and extends to the outer end of the limiting ring (35); and the scraper (38) is located inside the separation frame (1).

6. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 5 is characterized by: The surface of the scraper (38) contacts the surface of the filter frame (20), and there are four scrapers (38). The four scrapers (38) are arranged around the filter frame (20) as the center circle, the bottom of the feed hole (37) and the top of the collection hole (39) are connected to each other, and the bottom of the scraper (38) contacts the bottom of the inner wall of the separation frame (1).

7. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 6 is characterized by: The collecting component (11) comprises a storage rack (45), the inner wall of the storage rack (45) is fixedly connected to a positioning plate (44), one end of the positioning plate (44) away from the storage rack (45) is fixedly connected to a sliding rack (42), the top of the sliding rack (42) is fixedly connected to a spring (41), a sliding hole (40) is provided on the surface of the scraper (38), and a groove (43) is provided at the bottom of the inner wall of the scraper (38).

8. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 7 is characterized in that: The top of the spring (41) is fixedly connected to the top of the inner wall of the sliding hole (40), and the inner wall of the sliding frame (42) is slidably connected to the inner wall of the sliding hole (40).

9. The exhaust gas purification device suitable for environmental protection engineering construction according to claim 8, characterized in that: The end of the sliding frame (42) extends to the outer end of the sliding hole (40), and the sliding hole (40) is located at one end of the scraper (38) away from the filter frame (20), and the surface of the storage frame (45) contacts the inner wall of the groove (43).

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