An exhaust gas conveying pipeline

Abstract

The present application relates to the technical field of waste gas emission, and discloses an exhaust gas conveying pipeline, which comprises a pipeline body, a filtering element and a storage box; the storage box is detachably connected to the bottom of the pipeline body, and one end of the storage box facing the pipeline body has an inlet communicated with its inner cavity; the bottom of the filtering element has a sealing plate, and the sealing plate is connected to the storage box through an adjusting member, and the adjusting member drives the sealing plate to switch between entering the storage box and leaving the storage box; the bottom of the pipeline body has an installation opening, the storage box is installed on the pipeline body, and when the sealing plate leaves the storage box, the filtering element is located in the pipeline body for dust filtration, and at the same time the sealing plate closes the installation opening; when the sealing plate enters the storage box, the filtering element can be driven to be stored in the storage box. The present application can improve the situation of dust escaping when disassembling and assembling the filtering element.

Description

Technical Field

[0001] This application relates to the technical field of exhaust gas emissions, and particularly to an exhaust gas delivery pipeline. Background Art

[0002] Currently, in the delivery pipeline for delivering exhaust gas to the treatment unit, a filter element is usually configured to pre-filter the dust particles entrained in the exhaust gas, and then send the filtered exhaust gas to the treatment unit for the treatment of organic matter.

[0003] The filter elements in the delivery pipeline are usually filter meshes, filter cotton, etc. These filter elements need to be disassembled, cleaned or replaced according to the maintenance cycle. However, during the process of removing the filter element from the delivery pipeline, the dust attached to the filter element is likely to escape, not only scattering into the surrounding environment and being difficult to clean, but also possibly being inhaled by the operator and posing a threat to the operator's physical health. Summary of the Invention

[0004] In order to improve the situation of dust escaping during the disassembly and assembly of the filter element, this application provides an exhaust gas delivery pipeline.

[0005] This application provides an exhaust gas delivery pipeline, adopting the following technical solutions:

[0006] An exhaust gas delivery pipeline includes a pipeline body, a filter element and a storage box; the storage box is detachably connected to the bottom of the pipeline body, and one end of the storage box facing the pipeline body has an inlet communicating with its inner cavity; the bottom of the filter element has a sealing plate, and the sealing plate and the storage box are connected by an adjusting member, and the adjusting member drives the sealing plate to switch between entering and leaving the storage box;

[0007] The bottom of the pipeline body has an installation opening. When the storage box is installed on the pipeline body and the sealing plate leaves the storage box, the filter element is located in the pipeline body for dust filtration, and at the same time the sealing plate closes the installation opening; when the sealing plate enters the storage box, it can drive the filter element to be stored in the storage box;

[0008] The top of the filter element has a cover plate. When the filter element is stored in the storage box, the cover plate closes the inlet;

[0009] Two opening and closing members are arranged on the pipeline body along the exhaust gas delivery direction. The two opening and closing members are respectively on both sides of the installation opening, and both of the two opening and closing members are hinged in the pipeline body and have corresponding first states and second states. There is a switching mechanism on the pipeline body for switching the opening and closing members between the first state and the second state;

[0010] When the opening and closing member is in the first state, the opening and closing member opens the inner cavity of the pipeline body, enabling gas to flow through the inner cavity of the pipeline body opposite to the installation port; when the opening and closing member is in the second state, the opening and closing member closes the inner cavity of the pipeline body.

[0011] By adopting the above technical solution, when removing the filter element from the pipeline body, first put the filter element into the storage box, and then remove the storage box, so that the dust on the filter element can be isolated in the storage box, which can improve the situation of dust escaping during the disassembly and assembly of the filter element. When the filter element is stored in the storage box, the cover plate effectively seals the inlet to prevent the dust in the storage box from escaping. By setting two groups of opening and closing members and a switching mechanism, the convenient opening and closing of the inner cavity of the pipeline body during the removal and installation of the filter element is realized. Before the filter element is removed, the opening and closing member closes both sides of the pipeline body at the installation port to prevent external dust from entering the pipeline body without the filter element.

[0012] Optionally, the adjusting member includes an adjusting rod and a guiding rod; one end of the adjusting rod is rotatably connected to the sealing plate, one end of the guiding rod is connected to the sealing plate, the adjusting rod is parallel to the guiding rod, and the adjusting rod is simultaneously threadedly penetrated through one end of the storage box opposite to the inlet, and the guiding rod is simultaneously slidably penetrated through one end of the storage box opposite to the inlet.

[0013] By adopting the above technical solution, the combined use of the adjusting rod and the guiding rod not only realizes the lifting of the sealing plate and the filter element, but also improves the stability and guiding property of the lifting process.

[0014] Optionally, the switching mechanism includes

[0015] a switching handle, axially sliding in the hinged end of the opening and closing member along the axial direction of the rotation axis of the opening and closing member, and one end extends to the outside of the pipeline body and has a guiding portion;

[0016] a switching seat, installed on the outer wall of the pipeline body for the switching handle to pass through, having a first sliding groove, a transition sliding groove and a second sliding groove for the guiding portion to slide, the transition sliding groove communicates between the first sliding groove and the second sliding groove, and both ends of the first sliding groove and the second sliding groove far from the transition sliding groove extend along the axial direction of the hinged end of the opening and closing member towards the direction close to the pipeline body; and

[0017] a first elastic member, connected to the switching handle, giving the guiding portion a tendency to move towards the direction close to the pipeline body;

[0018] wherein, when the guiding portion slides into the first sliding groove, the opening and closing member is in the first state, and when the guiding portion slides into the second sliding groove, the opening and closing member is in the second state.

[0019] By adopting the above technical solution, through the adjustment of the position of the switching handle, the position of the opening and closing member is driven to be adjusted, so that the opening and closing member can be accurately and quickly moved, and the position of the opening and closing member after adjustment is maintained by the elastic force of the first elastic member.

[0020] Optionally, the opening and closing member includes an inner plate, an outer jacket plate and a second elastic member; the inner plate is hinged to the pipe body, the outer jacket plate is slidably sleeved on the free end of the inner plate along the direction perpendicular to the rotation axis of the inner plate, and the second elastic member is connected between the inner plate and the outer jacket plate to give the inner plate and the outer jacket plate a tendency to move away from each other.

[0021] By adopting the above technical solution, the combined use of the inner plate, the outer jacket plate and the second elastic member enables the outer jacket plate to be pressed against the inner wall of the pipe body, thereby enhancing the sealing performance and stability of the opening and closing member.

[0022] Optionally, the end of the outer jacket plate away from the inner plate has an arc-shaped structure with the arc opening facing the inner plate. When the opening and closing member is in the second state, the middle part of the bottom end of the outer jacket plate abuts against the edge of the pipe body at the installation port.

[0023] By adopting the above technical solution, the arc-shaped structure of the outer jacket plate can make the rotation of the outer jacket plate more smooth after contacting the inner wall of the pipe body.

[0024] Optionally, one end of the outer jacket plate facing the hinged end of the inner plate has an inclined surface, and the inclined surface gradually extends towards the surface of the inner plate along the direction close to the hinged end of the inner plate; the cover plate includes a main board, a telescopic board and a third elastic member, the telescopic board has two and respectively slides on the opposite ends of the main board, and the third elastic member is connected between the main board and the telescopic board to give the telescopic board a tendency to move away from the main board.

[0025] When the opening and closing member is in the second state, during the process of the filter element moving towards the storage box, the telescopic board is driven by the third elastic member to abut against the outer surface of the opening and closing member.

[0026] By adopting the above technical solution, the telescopic board abuts against the outer wall of the opening and closing member under the action of the third elastic member, so that the dust on the surface of the opening and closing member can be scraped into the storage box during the process of the filter element being stored in the storage box, realizing the cleaning of the opening and closing member. And the inclined surface can guide the telescopic board during the process of the telescopic board passing from the inner plate to the outer jacket plate.

[0027] Optionally, the pipe body includes an air delivery pipe and a filter pipe, the filter pipe is detachably connected between the two air delivery pipes, and both the filter element and the storage box are installed on the filter pipe.

[0028] By adopting the above technical solution, the split structure facilitates maintenance and inspection of the entire exhaust gas conveying pipeline.

[0029] Optionally, the filter tube includes a reduced diameter section and an expanded section, the expanded section has two sections and is respectively located at both ends of the filter tube, the reduced diameter section is connected between the two expanded sections, the filter element and the storage box are both installed on the reduced diameter section; the expanded section gradually expands toward the direction approaching the gas pipe, and the maximum diameter of the expanded section is consistent with the diameter of the gas pipe, and the diameter of the reduced diameter section is consistent with the minimum diameter of the expanded section.

[0030] By adopting the above technical solution, the reduction in diameter of the reduced diameter section can increase the flow velocity of the exhaust gas when passing through the reduced diameter section, thereby improving the efficiency of the exhaust gas passing through the filter element.

[0031] In summary, the present application includes at least one of the following beneficial effects:

[0032] 1. By setting a detachable storage box at the bottom of the pipe body, the filter element is stored in the storage box, so that the dust of the filter element can be sealed in the storage box, and then the storage box is removed, thereby improving the dust emission when the filter element is disassembled;

[0033] 2. The pipeline body is closed by the opening and closing parts to prevent dust and impurities from entering the pipeline body after the filter element is removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of the structure of the filter tube after being cut apart in the embodiment of the present application;

[0036] Figure 3 It is a schematic diagram of the structure of the opening and closing member and the filter member cooperating when the opening and closing member is in the first state in the embodiment of the present application;

[0037] Figure 4 It is a schematic diagram of the structure of the opening and closing member and the filter element cooperating when the opening and closing member is in the second state in the embodiment of the present application;

[0038] Figure 5 is a perspective view of a filter element and an opening and closing element in an embodiment of the present application;

[0039] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0040] Figure 7 yes Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0041] Figure 8 is a cross-sectional view of the joint between the switching handle and the inner plate in the application embodiment;

[0042] Figure 9 is a cross-sectional view of the switching seat in the application embodiment.

[0043] Explanation of reference numerals: 1. Pipeline body; 101. Gas transmission pipe; 102. Filter pipe; 1021. Reduced-diameter section; 1022. Flared section; 2. Filter element; 21. Filter body; 22. Sealing plate; 23. Cover plate; 231. Main board; 232. Telescopic plate; 233. Third elastic member; 3. Storage box; 4. Inlet; 5. Adjusting member; 51. Adjusting rod; 52. Guide rod; 6. Installation opening; 7. Opening and closing member; 71. Inner plate; 72. Outer jacket plate; 73. Second elastic member; 8. Switching mechanism; 81. Switching handle; 82. Switching seat; 83. First elastic member; 9. Guide portion; 10. First chute; 11. Transition chute; 12. Second chute; 13. Inclined surface; 14. Limiting portion; 15. Limiting groove; 16. Stroke portion; 17. Stroke groove; 18. Movement-blocking head; 19. Moving portion; 20. Moving groove. Detailed implementation manners

[0044] The following will Figure 1 be further described in detail with reference to Figure 9 the appended drawings to this application.

[0045] An embodiment of this application discloses an exhaust gas transmission pipeline. Referring to Figure 1 and Figure 2 , the exhaust gas transmission pipeline includes a pipeline body 1, a filter element 2, a storage box 3, and an opening and closing member 7. A plurality of pipeline bodies 1 are connected to the same main air duct (not shown in the figures), and an induced draft fan is provided in the main air duct to provide power for the transmission of exhaust gas. The filter element 2 is installed in the pipeline body 1 and is used to intercept impurities in the exhaust gas. The storage box 3 is connected to the filter element 2 and is used to store the filter element 2 when the filter element 2 is removed, so that the dust in the filter element 2 is not easily scattered into the surrounding environment. The opening and closing member 7 is hinged in the pipeline body 1 and is used to close the pipeline body 1 at the installation position of the filter element 2 after the filter element 2 is removed from the pipeline body 1, so that dust and impurities are not easily introduced into the pipeline body 1 in the absence of the filter element 2.

[0046] Referring to Figure 2 and Figure 3 , specifically, for the filter element 2, the filter element 2 includes a filter body 21, a sealing plate 22, and a cover plate 23. The filter body 21 can be a filter screen, gauze, filter cotton, etc. In this embodiment, a filter screen is preferably used, and a support frame is enclosed around the filter body 21. The sealing plate 22 is fixed to the bottom end of the filter body 21, the cover plate 23 is fixed to the top end of the filter body 21, and an installation opening 6 for the filter element 2 to enter is provided at the bottom end of the pipeline body 1.

[0047] For the storage box 3, the storage box 3 is in the shape of a square box, with an entrance 4 communicating with the inner cavity at the top. The size of the entrance 4 is adapted to the size of the sealing plate 22, and the sealing plate 22 is connected to the storage box 3 through an adjusting member 5. The adjusting member 5 can drive the filter element 2 to be stored in the storage box 3 or removed from the storage box 3.

[0048] There are convex edges extending outward around the top of the storage box 3. When the filter element 2 is removed from the storage box 3, the filter element 2 is moved from the installation opening 6 into the pipe body 1, so that the cover plate 23 abuts against the inner top wall of the pipe body 1. At this time, the filter body 21 divides the inner cavity of the pipe body 1, the sealing plate 22 enters the installation opening 6 to block the installation opening 6, and the convex edge of the storage box 3 abuts against the bottom wall of the pipe body 1. The convex edge can be locked to the pipe body 1 through bolts to realize the installation of the storage box 3 and the filter element 2.

[0049] Refer to Figure 2 and Figure 3 Among them, the adjusting member 5 includes an adjusting rod 51 and a guiding rod 52. The adjusting rod 51 is threadedly inserted through the bottom of the storage box 3, and at the same time, the top end of the adjusting rod 51 is rotatably connected to the sealing plate 22 through an intermediate seat. Specifically, the adjusting rod 51 is rotatably connected to the intermediate seat, and the intermediate seat is detachably connected to the center of the sealing plate 22 through bolts. The bottom end of the guiding rod 52 is fixedly connected to the sealing plate 22, and the bottom end of the guiding rod 52 slidably passes through the bottom of the storage box 3. The adjusting rod 51 and the guiding rod 52 are parallel to each other. When the adjusting rod 51 is moved threadedly, the sealing plate 22 is driven to move up and down to drive the filter element 2 to be stored in the storage box 3 or removed from the storage box 3. It should be noted that when the filter element 2 is stored in the storage box 3, the four sides of the sealing plate 22 abut against the four inner walls of the storage box 3, the four sides of the cover plate 23 also abut against the four inner walls of the storage box 3, and the cover plate 23 blocks the entrance 4.

[0050] Refer to Figure 4 and Figure 5 For the opening and closing member 7, there are two groups of opening and closing members 7 arranged on the pipe body 1 along the waste gas conveying direction. The two groups of opening and closing members 7 are respectively on the opposite sides of the pipe body 1 relative to the installation opening 6, and the filter element 2 is located between the two groups of opening and closing members 7. Each group of opening and closing members 7 includes an inner plate 71, an outer jacket plate 72 and a second elastic member 73. The inner plate 71 is in the shape of a square plate, and one end of the inner plate 71 is hinged to the inner top wall of the pipe body 1. The outer jacket plate 72 is square, and the outer jacket plate 72 is sleeved and slid on the free end of the inner plate 71 along the distribution direction of the hinged end and the free end of the inner plate 71, and the outer periphery of the end of the outer jacket plate 72 away from the inner plate 71 is in an arc shape with the arc opening facing the inner plate 71. The two opposite sides of the inner plate 71 respectively abut against the two opposite inner walls of the pipe body 1, and the inner plate 71 is flush with the two opposite sides of the outer jacket plate 72. The second elastic member 73 is a spring, which is connected between the free end of the inner plate 71 and the inner wall of the outer jacket plate 72 to give the outer jacket plate 72 an elastic force to slide in a direction away from the hinged end of the inner plate 71.

[0051] Referring to Figure 6 , in order to improve the stability of the relative sliding between the inner plate 71 and the outer jacket plate 72, a limiting portion 14 protrudes from the outer wall of the inner plate 71, and a limiting groove 15 for the limiting portion 14 to slide is formed on the inner wall of the outer jacket plate 72, and the extending direction of the limiting groove 15 is parallel to the sliding direction of the outer jacket plate 72.

[0052] Referring to Figure 2 、 Figure 3 and Figure 4 , the hinged end of the inner plate 71 rotates relative to the pipe body 1 so as to be able to drive the opening and closing member 7 to switch between the first state and the second state. When the opening and closing member 7 is in the first state, both the inner plate 71 and the outer jacket plate 72 are horizontally arranged, and the upper surface of the outer jacket plate 72 abuts against the inner top wall of the pipe body 1, and the free ends of the inner plate 71 in the two groups of opening and closing members 7 are farther away from the hinged end of the inner plate 71. At this time, the opening and closing member 7 opens the pipe body 1, and the gas in the pipe body 1 can pass through the space between the opening and closing member 7 and the pipe body 1.

[0053] When the opening and closing member 7 is in the second state, both the inner plate 71 and the outer jacket plate 72 are vertically arranged, and the top end of the inner plate 71 abuts against the inner top wall of the pipe, and the bottom end of the outer jacket plate 72 is driven by the second elastic member 73 to abut against the inner bottom wall of the pipe body 1. At this time, the opening and closing member 7 closes the inner cavity of the pipe body 1 to prevent the gas in the pipe body 1 from passing through.

[0054] It should be noted that when the opening and closing member 7 is in the second state, the lowest point of the outer jacket plate 72 abuts against the edge line of the pipe body 1 at the installation port 6, so that when the opening and closing member 7 rotates from the first state to the second state, the outer jacket plate 72 can sweep the dust at the edge of the installation port 6 downward into the installation box, so that dust is not likely to accumulate at the edge of the installation port 6.

[0055] Referring to Figure 5 , furthermore, the cover plate 23 is telescopic, and inclined surfaces 13 for guiding the telescopic plate 232 are cut out on both opposite sides of one end of the outer jacket plate 72 close to the hinged end of the inner plate 71, so that when the opening and closing member 7 is in the second state and the filter element 2 is gradually received in the receiving box 3, the cover plate 23 can scrape off the dust on the surface of the opening and closing member 7 close to the installation port 6.

[0056] Referring to Figure 5 and Figure 7, Specifically, the cover plate 23 includes a main board 231, a telescopic plate 232, and a third elastic member 233. The main board 231 is in the shape of a square plate, and the filter body 21 is fixed to the middle of the main board 231. There are two telescopic plates 232. The two telescopic plates 232 slide on the opposite sides of the main board 231 along the direction parallel to the exhaust gas passing through the filter body 21, and the opposite sides of the telescopic plates 232 are respectively flush with the opposite sides of the main board 231, so that the opposite sides of the telescopic plates 232 and the main board 231 respectively abut against the inner walls of the opposite sides of the pipe body 1. The third elastic member 233 is a spring. The third elastic member 233 is connected between the inner wall of the main board 231 and the telescopic plate 232 to give the telescopic plate 232 an elastic force to move away from the main board 231. Among them, in order to improve the stability of the relative sliding between the telescopic plate 232 and the main board 231, a travel portion 16 protrudes from the inner wall of the main board 231, and a travel groove 17 for the travel portion 16 to slide is provided on the surface of the telescopic plate 232. The travel groove 17 extends along the sliding direction of the telescopic plate 232.

[0057] The inclined surface 13 of the outer cover plate 72 gradually extends toward the surface of the inner plate 71 along the direction close to the hinged end of the inner plate 71, and one end of the inclined surface 13 close to the hinged end of the inner plate 71 is connected to the outer surface of the inner plate 71, and one end of the inclined surface 13 away from the hinged end of the inner plate 71 is connected to the outer surface of the outer cover plate 72.

[0058] Refer to Figure 3 , Figure 4 and Figure 5 , when the opening and closing member 7 is in the first state or the second state, the mutually remote ends of the two telescopic plates 232 in the installed and used state are respectively driven by the third elastic member 233 to abut against one end of the two inner plates 71 close to each other. And when the opening and closing member 7 is in the second state, during the process of the filter element 2 gradually retracting into the storage box 3, the telescopic plate 232 transitions from abutting against the surface of the inner plate 71 to abutting against the surface of the outer cover plate 72 through the inclined surface 13, and then enters the inlet 4 through the installation opening 6. When the telescopic plate 232 is located in the inlet 4, the mutually remote ends of the two telescopic plates 232 respectively abut against the opposite sides of the storage box 3, and the opposite ends of the telescopic plate 232 and the opposite ends of the main board 231 respectively abut against the other opposite sides of the storage box 3, so that the cover plate 23 seals the inlet 4.

[0059] Refer to Figure 2 and Figure 4 , and in order to enable the opening and closing member 7 to switch between the first state and the second state, a switching mechanism 8 is provided on the pipe body 1, and the switching mechanism 8 corresponds to the opening and closing member 7 one by one.

[0060] Refer to Figure 4 and Figure 8, specifically, each switching mechanism 8 includes a switching handle 81, a switching seat 82, and a first elastic member 83. The switching handle 81 is in the shape of a round shaft. The switching handle 81 passes through the hinged end of the inner plate 71 and the pipe body 1 at the same time. The end of the inner plate 71 is sleeved on the switching handle 81, so that the inner plate 71 is hinged to the pipe body 1 through the switching handle 81. A moving portion 19 protrudes from the outer wall of the switching handle 81. A moving groove 20 for the moving portion 19 to move along the axial direction of the switching plate is provided on the inner plate 71 to limit the relative rotation between the switching handle 81 and the inner plate 71. The switching seat 82 is in the shape of a disc and is fixed to the outer wall of one side of the pipe body 1. One end of the switching handle 81 slides out of the pipe body 1 and simultaneously passes through the switching seat 82 coaxially. A handle is fixed to the end of the switching handle 81 passing through the switching seat 82.

[0061] Referring to Figure 4 , Figure 8 and Figure 9 , a guiding portion 9 protruding outward is provided on the outer circumference of the switching handle 81 located in the switching seat 82. A first sliding groove 10, a transition sliding groove 11, and a second sliding groove 12 for the guiding portion 9 to slide are provided on the inner wall of the switching seat 82. The first sliding groove 10 and the second sliding groove 12 are parallel to each other and both extend along the axial direction parallel to the switching handle 81. The transition sliding groove 11 extends along the circumferential direction of the switching handle 81. The two ends of the transition sliding groove 11 away from each other are respectively communicated with one end of the first sliding groove 10 and the second sliding groove 12 away from the pipe body 1.

[0062] When the driving handle drives the guiding portion 9 to slide into the first sliding groove 10, the opening and closing member 7 is in the first state. When the driving handle drives the guiding portion 9 to slide out of the first sliding groove 10 and slide into the second sliding groove 12 through the transition sliding groove 11, the opening and closing member 7 is in the second state.

[0063] One end of the switching handle 81 away from the switching seat 82 slides out of the pipe body 1 and is connected with a movement blocking head 18. The first elastic member 83 is a spring. The first elastic member 83 is sleeved on the outer wall of the switching handle 81 and is connected between the movement blocking head 18 and the outer wall of the pipe body 1, and is used to give the movement blocking head 18 an elastic force to move away from the pipe body 1, so as to give the guiding portion 9 on the switching handle 81 a tendency to move towards the pipe body 1, so that when the guiding portion 9 is aligned with the first sliding groove 10 or the second sliding groove 12, the switching plate can be driven to move the guiding portion 9 into the first sliding groove 10 or the second sliding groove 12, so that the opening and closing member 7 can be kept in the first state or the second state.

[0064] Referring to Figure 1 and Figure 2, Further, the pipeline body 1 includes a gas transmission pipe 101 and a filter pipe 102. The filter pipe 102 is detachably connected between two gas transmission pipes 101 through flange bolts. The gas transmission pipe 101 is square tubular. The filter pipe 102 includes a reduced-diameter section 1021 and a flared section 1022. The flared section 1022 has two sections, which are respectively located at two ends of the filter pipe 102 away from each other. The reduced-diameter section 1021 is located between the two flared sections 1022. And the two flared sections 1022 respectively correspond to the gas transmission pipes 101 at both ends of the filter pipe 102. The flared section 1022 flares towards the direction close to the corresponding gas transmission pipe 101, and the maximum diameter of the flared section 1022 is the same as the diameter of the gas transmission pipe 101, and the minimum diameter of the flared section 1022 is the same as the diameter of the reduced-diameter section 1021. Among them, the filter element 2, the storage box 3 and the opening and closing member 7 are all installed on the reduced-diameter section 1021.

[0065] When the waste gas is sent from the gas transmission pipe 101 to the filter pipe 102 for filtration, the reduced diameter of the filter pipe 102 can increase the flow rate of the waste gas passing through the filter pipe 102 and improve the filtration efficiency. In order to balance the air pressure between the reduced-diameter section 1021 and the cover plate 23 and between the sealing plate 22 and the storage box 3 when the filter element 2 is stored in the storage box 3, balance holes (not shown in the figure) are provided on the bottom wall of the storage box 3 and the part of the top wall of the reduced-diameter section 1021 relative to the main board 231.

[0066] Further, a blower (not shown in the figure) is placed in the gas transmission pipe 101, and the blowing direction of the blower is opposite to the waste gas transmission direction. Before storing the filter element 2, first move the opening and closing member 7 at the end far from the main air duct among the two opening and closing members 7 to the second state, and keep the opening and closing member 7 at the end close to the main air duct in the first state. Then turn on the blower to blow the filter body 21, blow the dust on the side of the filter body 21 away from the main air duct onto the space between the opening and closing member 7 and the filter body 21. Then move both opening and closing members 7 to the second state, store the filter element 2 in the storage box 3, and the dust falling from the filter body 21 and the dust scraped off from the opening and closing member 7 enter the storage box 3 and accumulate on the sealing plate 22.

[0067] The implementation principle of an exhaust gas transmission pipeline in an embodiment of the present application is as follows: When removing the filter element 2, first move the opening and closing member 7 at the end far from the main air duct to the second state, turn on the blower to blow the filter element 2 to remove dust, so that the dust accumulated on the side of the filter body 21 away from the main air duct falls between the opening and closing member 7 and the filter body 21. Then move the opening and closing member 7 at the end close to the main air duct to the second state as well. Then threadedly move the adjusting rod 51 to drive the filter element 2 to move downward and be stored in the storage box 3. After the filter element 2 moves away from the pipeline body 1 and the cover plate 23 closes the inlet 4, then remove the storage box 3 from the pipeline body 1, and then take the storage box 3 to a dedicated cleaning space to take out the filter element 2 for cleaning.

[0068] When installing the filter element 2 after it is cleaned, both opening and closing members 7 remain in the second state. The filter element 2 is sent between the two opening and closing members 7 until the cover plate 23 abuts against the inner top wall of the reduced-diameter section 1021, the sealing plate 22 closes the installation opening 6, and the top of the storage box 3 abuts against the bottom wall of the reduced-diameter section 1021. After locking the storage box 3 to the reduced-diameter section 1021 by bolts, the two opening and closing members 7 are then moved to the first state to complete the installation of the filter element 2.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An exhaust gas conveying pipeline, characterized in that: It includes a pipe body (1), a filter element (2), and a storage box (3); the storage box (3) is detachably connected to the bottom of the pipe body (1), and one end of the storage box (3) facing the pipe body (1) has an inlet (4) communicating with its inner cavity; the bottom of the filter element (2) has a sealing plate (22), and the sealing plate (22) is connected to the storage box (3) through an adjusting member (5), and the adjusting member (5) drives the sealing plate (22) to switch between entering the storage box (3) and leaving the storage box (3); The bottom of the pipe body (1) has an installation opening (6), the storage box (3) is installed on the pipe body (1), and when the sealing plate (22) leaves the storage box (3), the filter element (2) is located in the pipe body (1) for dust filtration, and at the same time the sealing plate (22) closes the installation opening (6); when the sealing plate (22) enters the storage box (3), it can drive the filter element (2) to be stored in the storage box (3); The top of the filter element (2) has a cover plate (23), and when the filter element (2) is stored in the storage box (3), the cover plate (23) closes the inlet (4); Two opening and closing members (7) are arranged on the pipe body (1) along the waste gas conveying direction, the two opening and closing members (7) are respectively on both sides of the installation opening (6), and both of the two opening and closing members (7) are hinged in the pipe body (1), and have corresponding first states and second states, and there is a switching mechanism (8) on the pipe body (1) for switching the opening and closing members (7) between the first state and the second state; When the opening and closing member (7) is in the first state, the opening and closing member (7) opens the inner cavity of the pipe body (1), so that gas can flow through the inner cavity of the pipe body (1) opposite to the installation opening (6); when the opening and closing member (7) is in the second state, the opening and closing member (7) closes the inner cavity of the pipe body (1).

2. The exhaust gas conveying pipe according to claim 1, characterized in that: The adjusting member (5) includes an adjusting rod (51) and a guiding rod (52); one end of the adjusting rod (51) is rotatably connected to the sealing plate (22), one end of the guiding rod (52) is connected to the sealing plate (22), the adjusting rod (51) is parallel to the guiding rod (52), and the adjusting rod (51) is simultaneously threadedly penetrated through one end of the storage box (3) opposite to the inlet (4), and the guiding rod (52) is simultaneously slidably penetrated through one end of the storage box (3) opposite to the inlet (4).

3. An exhaust gas conveying pipeline according to claim 1, characterized in that: The switching mechanism (8) includes a switching handle (81), axially sliding in the hinged end of the opening and closing member (7) along the rotation axis of the opening and closing member (7), and one end extends to the outside of the pipe body (1) and has a guiding portion (9); A switching base (82) is installed on the outer wall of the pipe body (1) for the switching handle (81) to pass through. It has a first chute (10), a transition chute (11) and a second chute (12) for the guiding part (9) to slide. The transition chute (11) communicates between the first chute (10) and the second chute (12), and one ends of the first chute (10) and the second chute (12) far from the transition chute (11) both extend in the axial direction of the hinged end of the opening and closing member (7) towards the direction close to the pipe body (1); and A first elastic member (83) is connected to the switching handle (81) to give the guiding part (9) a tendency to move towards the direction close to the pipe body (1); Wherein, when the guiding part (9) slides into the first chute (10), the opening and closing member (7) is in the first state, and when the guiding part (9) slides into the second chute (12), the opening and closing member (7) is in the second state.

4. An exhaust gas conveying pipe according to claim 1, characterized in that: The opening and closing member (7) includes an inner plate (71), an outer jacket plate (72) and a second elastic member (73); the inner plate (71) is hinged to the pipe body (1), the outer jacket plate (72) is slidably sleeved on the free end of the inner plate (71) along the direction perpendicular to the rotation axis of the inner plate (71), and the second elastic member (73) is connected between the inner plate (71) and the outer jacket plate (72) to give the inner plate (71) and the outer jacket plate (72) a tendency to move away from each other.

5. The exhaust gas conveying pipeline according to claim 4, wherein: One end of the outer jacket plate (72) far from the inner plate (71) has an arc-shaped structure with the arc opening facing the inner plate (71). When the opening and closing member (7) is in the second state, the middle part of the bottom end of the outer jacket plate (72) abuts against the edge of the pipe body (1) at the installation opening (6).

6. The exhaust gas conveying pipeline according to claim 5, characterized in that: One end of the outer jacket plate (72) towards the hinged end of the inner plate (71) has an inclined surface (13), and the inclined surface (13) gradually extends towards the surface of the inner plate (71) along the direction close to the hinged end of the inner plate (71); the cover plate (23) includes a main board (231), a telescopic board (232) and a third elastic member (233). There are two telescopic boards (232) which respectively slide on the opposite ends of the main board (231), and the third elastic member (233) is connected between the main board (231) and the telescopic board (232) to give the telescopic board (232) a tendency to move away from the main board (231). When the opening and closing member (7) is in the second state, during the process of the filter element (2) moving towards the storage box (3), the telescopic board (232) is driven by the third elastic member (233) to abut against the outer surface of the opening and closing member (7).

7. An exhaust gas conveying pipeline according to claim 1, characterized in that: The pipe body (1) includes a gas transmission pipe (101) and a filter pipe (102). The filter pipe (102) is detachably connected between the two gas transmission pipes (101), and both the filter element (2) and the storage box (3) are installed on the filter pipe (102).

8. An exhaust gas conveying pipeline according to claim 7, characterized in that: The filter tube (102) includes a reduced-diameter section (1021) and a flared section (1022). The flared section (1022) has two segments located at both ends of the filter tube (102) respectively. The reduced-diameter section (1021) is connected between the two flared sections (1022). The filter element (2) and the storage box (3) are both installed on the reduced-diameter section (1021). The flared section (1022) gradually flares towards the direction close to the gas transmission pipe (101), and the maximum diameter of the flared section (1022) is the same as the diameter of the gas transmission pipe (101). The diameter of the reduced-diameter section (1021) is the same as the minimum diameter of the flared section (1022).

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