An RTO incinerator exhaust gas inlet device

Abstract

This invention discloses an exhaust gas inlet device for an RTO incinerator, belonging to the field of exhaust gas inlet technology. It includes an incinerator body with at least three regenerator chambers, an inlet pipe, and a flow guiding unit. Each regenerator chamber and the inlet pipe are connected by a connecting pipe, and at least three shaking and centering units are installed circumferentially on the connecting pipe, with several of the shaking and centering units tending to be aligned. This invention can block particulate matter in the exhaust gas inside the inlet pipe, preventing it from entering the regenerator chambers and avoiding high exhaust gas flow rates that could cause strong scouring of the ceramic body by particles. Simultaneously, it allows the device itself to clean the primary filter screen, which is very convenient and avoids the problem of difficult-to-clean filtration devices, thus preventing a decrease in the inlet flow of exhaust gas and affecting the overall treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas inlet technology, specifically to an exhaust gas inlet device for an RTO incinerator. Background Technology

[0002] With the booming development of industrial production, the resulting problem of waste gas emissions has become increasingly serious, posing a significant threat to the environment and human health. As a key piece of equipment in the field of industrial waste gas treatment, the RTO incinerator boasts significant advantages in energy recycling and fuel savings. It effectively oxidizes and decomposes volatile organic compounds (VOCs) and other organic waste gases into carbon dioxide and water at high temperatures. Furthermore, it utilizes ceramic regenerators to store the heat generated during waste gas decomposition to preheat subsequent incoming organic waste gases.

[0003] Currently, there are various types of exhaust gas inlet devices for RTO incinerators, commonly including direct-connection inlet devices, split-flow inlet devices, and swirl inlet devices. Their working principle generally involves the exhaust gas being introduced into the regenerator's heat storage chamber through an inlet pipe by a fan. Inside the heat storage chamber, the exhaust gas exchanges heat with the ceramic heat storage medium, absorbing heat and rising in temperature. It then enters the combustion chamber, where it mixes thoroughly with oxygen at high temperatures and undergoes an oxidation decomposition reaction, transforming into harmless substances such as carbon dioxide and water.

[0004] In most existing RTO incinerator exhaust gas inlet devices, dedicated filtration systems are not provided. This allows various particulate matter carried by the exhaust gas, such as dust, tar, silicon-containing organic matter, and ammonium salt particles, to enter the regenerator chamber unimpeded. These particles flow at high speed within the regenerator chamber with the exhaust gas, frequently contacting the surface of the ceramic regenerator. Due to the high flow rate of the exhaust gas, the particles exert a strong scouring effect on the ceramic body. Under high-temperature conditions, the structural stability of the ceramic body itself is affected, and the continuous scouring by particles further exacerbates surface wear. Simultaneously, the effect of thermal stress cannot be ignored. The temperature of the regenerator chamber changes frequently during operation, and stress is generated internally in the ceramic body during thermal expansion and contraction. The combined impact of particle impact and thermal stress causes micro-cracks to gradually appear on the surface of the ceramic body. Over time and with the increase in exhaust gas treatment volume, these cracks continue to expand, eventually leading to the ceramic body breaking and peeling off, and the pores gradually becoming blocked, reducing its service life. In the exhaust gas inlet device of an RTO incinerator equipped with a special filtration device, the filtration device is difficult to clean, which in turn reduces the flow rate of exhaust gas and affects the overall treatment efficiency.

[0005] Therefore, it is necessary to provide an RTO incinerator exhaust gas inlet device to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide an RTO incinerator exhaust gas inlet device to solve the problems mentioned in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an RTO incinerator exhaust gas inlet device, including an incinerator body having no less than three regenerator chambers, an inlet pipe and a flow guiding unit, wherein each of the regenerator chambers and the inlet pipe is connected by a connecting pipe, and no less than three shaking centering units are installed at equal intervals along the circumference of the connecting pipe.

[0008] The connecting pipe has an air inlet chamber and an air outlet chamber. The air inlet chamber is connected to the air inlet pipe, and the air outlet chamber is connected to the heat storage chamber. A corrugated pipe is installed on the inner wall of the connecting pipe. A primary filter unit for blocking exhaust gas particles inside the corrugated pipe is fixedly connected to the outlet of the corrugated pipe. The primary filter unit is located between the air inlet chamber and the air outlet chamber.

[0009] The shaking centering unit has an elastically extendable guide rod, and a ball is fixedly connected to the end of the guide rod located inside the connecting pipe. The ball abuts against the outer peripheral wall of the bellows.

[0010] The flow guiding unit has a flow guiding pipe that communicates with the air inlet chamber, and a plurality of outlets that communicate with the air outlet chamber are opened on one side of the flow guiding pipe, with the outlets facing the corrugated pipe.

[0011] Furthermore, the shaking centering unit also includes a housing, a limiting ring, a spring, and a sealing ring. The guide rod is slidably installed inside the housing and penetrates the outer wall of the connecting pipe. The diameter of the limiting ring is larger than that of the guide rod and is fixedly installed at the outer end of the guide rod.

[0012] The spring is nested on the guide rod and located inside the connecting pipe. One end of the spring abuts against the inner wall of the connecting pipe, and the other end abuts against the surface of the sphere.

[0013] Furthermore, the sealing ring is installed on the left and right sides inside the housing, with its outer end face abutting against the housing and its inner end face abutting against the outer periphery of the guide rod to form a seal.

[0014] Furthermore, the flow guiding unit also includes a connecting seat, and the flow guiding pipe is located above the connecting seat and has an airflow cavity with an opening facing downwards.

[0015] Furthermore, a limiting hole is formed at the center of the connecting seat, the cross-sectional area of ​​the limiting hole gradually narrows from top to bottom, and the diameter of the top of the limiting hole is consistent with the diameter of the airflow cavity.

[0016] Furthermore, a block is slidably connected inside the airflow cavity, and the lower end of the block has a limiting part that matches the limiting hole.

[0017] Furthermore, the corrugated pipe has, from bottom to top, a base plate, a lower equal-diameter section, a corrugated section, an upper equal-diameter section, and an outlet end pipe. The outlet end pipe is connected to the primary filter unit. The base plate is fixedly connected to the inner wall of the connecting pipe. The upper equal-diameter section is located above the corrugated section, and the length of the upper equal-diameter section is greater than the length of the lower equal-diameter section. The connecting seat is fixedly connected to the upper surface of the base plate, and the connecting seat communicates with the base plate to connect the airflow chamber and the air inlet chamber.

[0018] Furthermore, the cross-section of the outlet is inclined upward, and the position of the outlet is flush with the upper equal diameter section, so that the airflow in the airflow cavity is blown into the upper equal diameter section through the outlet.

[0019] Furthermore, the primary filtration unit includes a primary ring plate fixedly connected to the inner wall of the corrugated pipe outlet, several primary skeletons, and a primary filter screen. The primary skeletons are arranged in a crisscross pattern on the inner peripheral wall of the primary ring plate. The primary filter screen is fixedly connected to the primary skeleton and distributed between adjacent primary skeletons. The primary filter screen is located between the air inlet chamber and the air outlet chamber.

[0020] Furthermore, a secondary filtration unit is installed inside the connecting pipe. The secondary filtration unit is located above the primary filtration unit. Below the secondary filtration unit is an air outlet chamber, and above it is a collection chamber communicating with the heat storage chamber. The secondary filtration unit includes a secondary ring plate fixedly connected to the inner wall of the connecting pipe, several secondary skeletons, and a secondary filter screen. The secondary skeletons are arranged crisscrossingly on the inner peripheral wall of the secondary ring plate. The secondary filter screens are fixedly connected to the secondary skeletons and distributed between adjacent secondary skeletons. The secondary filter screens cover the entire connecting pipe.

[0021] The beneficial effects of this invention are as follows: The exhaust gas inlet device for an RTO incinerator provided by this invention, by setting up a corrugated pipe and a primary filter screen, can block particulate matter in the exhaust gas in the inlet pipe, preventing it from entering the regenerator chamber. This avoids the exhaust gas flow rate being too fast, causing the particles to have a strong scouring effect on the ceramic body, further aggravating its surface wear. At the same time, the corrugated pipe itself has the characteristic of being expandable and contractible. When the primary filter screen is blocked, the airflow in the corrugated pipe is unstable, which can cause the outlet pipe to shake. As a result, the primary filter unit also begins to shake, causing the particles attached to the primary filter screen to fall off. This allows the device to clean the primary filter screen itself, which is very convenient. This avoids the problem of the filter device being difficult to clean, which would reduce the flow rate of the exhaust gas and affect the overall treatment efficiency.

[0022] By incorporating a shaking centering unit, under stable conditions, the sphere supports the upper equal-diameter section, ensuring the bellows remains vertical and preventing it from sliding. This prevents airflow from being blown against the pipe wall and causing some loss of airflow. Even if the primary filter screen is clogged, the sphere's back-and-forth movement can still cause the bellows to slide, limiting the upper equal-diameter section and accelerating the bellows's swing amplitude. When the machine is stopped, manually moving the limiting ring allows the sphere to collide with the upper equal-diameter section, causing the bellows to shake and clean particles from the primary filter screen. The entire process is convenient and quick, requiring no manual entry into the device or disassembly for cleaning.

[0023] By incorporating a flow guiding unit, when the airflow inside the corrugated pipe is unstable, a certain amount of airflow is blown from the inlet pipe into the flow guiding pipe and then blown upwards through the outlet to the equal-diameter section. Due to the lever principle, the swaying amplitude of the corrugated section is increased, thereby improving the cleaning efficiency to a certain extent.

[0024] By incorporating a blockage block, when the airflow travels from the inlet chamber a to the outlet chamber b, if the primary filter unit is blocked, the impact force of the airflow will force the blockage block to open a new path for the waste airflow to exit. At the same time, under normal circumstances, the blockage blockage blockage is caused by the blockage blockage blockage due to its own gravity, leaving only one path for the bellows to enter the outlet chamber b. This ensures stable airflow within the bellows and prevents loss due to diversion, thereby improving the overall processing efficiency of the device.

[0025] By incorporating a two-stage filtration unit, particles that were not blocked in the first-stage filtration unit can be blocked again, while particles in the gas discharged from the outlet are also blocked. This dual protection prevents particles from entering the heat storage chamber, increasing the protective performance and improving the processing efficiency.

[0026] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0027] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0028] Figure 1 This is an overall schematic diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the connecting pipes of the present invention;

[0030] Figure 3 This is a schematic diagram of the position of the jitter centering unit of the present invention;

[0031] Figure 4 This is a schematic diagram of the bellows of the present invention;

[0032] Figure 5 This is a schematic diagram of the primary filtration unit of the present invention;

[0033] Figure 6 This is a schematic diagram of the jitter centering unit of the present invention;

[0034] Figure 7 This is a schematic cross-sectional view of the jitter centering unit of the present invention;

[0035] Figure 8 This is a schematic longitudinal cross-sectional view of the connecting pipe of the present invention;

[0036] Figure 9 For the present invention Figure 8 Enlarged diagram of area A in the middle;

[0037] Figure 10 This is a schematic cross-sectional view of the connecting pipe of the present invention;

[0038] Figure 11 This is a schematic diagram of the flow guiding unit of the present invention;

[0039] Figure 12 This is a schematic cross-sectional view of the flow guiding unit of the present invention;

[0040] Figure 13 This is a schematic diagram of the gas flow direction according to the present invention;

[0041] Figure 14 For the present invention Figure 13 Enlarged diagram of area B in the middle;

[0042] The following are the labeling elements in the figure:

[0043] 1. Incinerator body; 2. Regenerator chamber; 3. Inlet pipe; 4. Connecting pipe; a. Inlet chamber; b. Outlet chamber; c. Collecting chamber; 5. Shaking centering unit; 51. Outer shell; 511. Arc-shaped part; 52. Guide rod; 53. Limiting ring; 54. Sphere; 55. Spring; 56. Sealing ring; 6. Corrugated pipe; 61. Base plate; 62. Lower equal diameter section; 63. Corrugated section; 64. Upper equal diameter section; 65. Outlet end pipe; 7. Flow guiding unit; 71. Connecting seat; 711. Limiting hole; 72. Flow guiding pipe; 721. Airflow chamber; 722. Outlet; 73. Block; 731. Restricting part; 8. Primary filtration unit; 81. Primary ring plate; 82. Primary frame; 83. Primary filter screen; 9. Secondary filtration unit; 91. Secondary ring plate; 92. Secondary frame; 93. Secondary filter screen. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] like Figure 1-14 As shown, the present invention provides a technical solution: an RTO incinerator exhaust gas inlet device, comprising an incinerator body 1 having no less than three regenerator chambers 2, an inlet pipe 3 and a flow guiding unit 7, wherein each regenerator chamber 2 and the inlet pipe 3 are connected by a connecting pipe 4, and no less than three shaking centering units 5 are installed at equal intervals along the circumference of the connecting pipe 4.

[0047] The connecting pipe 4 has an air inlet chamber a and an air outlet chamber b. The air inlet chamber a is connected to the air inlet pipe 3, and the air outlet chamber b is connected to the heat storage chamber 2. A corrugated pipe 6 is installed on the inner wall of the connecting pipe 4. A primary filter unit 8 for blocking exhaust gas particles in the corrugated pipe 6 is fixedly connected at the outlet of the corrugated pipe 6. The primary filter unit 8 is located between the air inlet chamber a and the air outlet chamber b.

[0048] The shaking centering unit 5 has an elastically extendable guide rod 52. The end of the guide rod 52 located inside the connecting pipe 4 is fixedly connected to a ball 54, which abuts against the outer peripheral wall of the upper equal diameter section 64.

[0049] The flow guiding unit 7 has a flow guiding pipe 72 that communicates with the air inlet chamber a, and a plurality of outlet ports 722 that communicate with the air outlet chamber b are opened on one side of the flow guiding pipe 72. A plurality of shaking centering units 5 abut against the outer wall of the bellows 6, apply pressure toward the center, tend to center or make the bellows 6 concentric with the connecting pipe 4.

[0050] The shaking centering unit 5 also includes a housing 51, a limiting ring 53, a spring 55 and a sealing ring 56. One side of the housing 51 has an arc-shaped part 511 that is consistent with the diameter of the outer peripheral wall of the connecting pipe 4. The arc-shaped part 511 is fixedly connected to the outer wall of the connecting pipe 4. The guide rod 52 passes through the outer wall of the connecting pipe 4 and is slidably installed inside the housing 51. The diameter of the limiting ring 53 is larger than that of the guide rod 52 and is fixedly installed at the outer end of the guide rod 52.

[0051] Spring 55 is nested on guide rod 52 and located inside connecting pipe 4. One end of spring 55 abuts against the inner wall of connecting pipe 4, and the other end abuts against the surface of ball 54.

[0052] The sealing ring 56 is installed on the left and right sides inside the housing 51. Its outer end face abuts against the housing 51, and its inner end face abuts against the outer periphery of the guide rod 52 to form a seal.

[0053] The flow guiding unit 7 also includes a connecting seat 71, and a flow guiding pipe 72 located above the connecting seat 71 and having a downward-opening airflow cavity 721. The flow area of ​​the air inlet cavity a is larger than the flow area of ​​the airflow cavity 721, for example, by fifty or one hundred times or more.

[0054] A limiting hole 711 is provided in the center of the connecting seat 71. The cross-sectional area of ​​the limiting hole 711 gradually narrows from top to bottom. The diameter of the top of the limiting hole 711 is the same as the diameter of the airflow cavity 721.

[0055] A block 73 is slidably connected up and down inside the airflow cavity 721. The lower end of the block 73 has a limiting part 731 that matches the limiting hole 711.

[0056] The corrugated pipe 6 has, from bottom to top, a base plate 61, a lower equal diameter section 62, a corrugated section 63, an upper equal diameter section 64, and an outlet end pipe 65. The outlet end pipe 65 is connected to the primary filter unit 8. The base plate 61 is fixedly connected to the inner wall of the connecting pipe 4. The upper equal diameter section 64 is located above the corrugated section 63, and the length of the upper equal diameter section 64 is greater than the length of the lower equal diameter section 62. The connecting seat 71 is fixedly connected to the upper surface of the base plate 61, and the connecting seat 71 communicates with the base plate 61 to connect the airflow chamber 721 and the air inlet chamber a.

[0057] The cross-section of the outlet 722 is inclined upward, and the position of the outlet 722 is flush with the upper equal diameter section 64, so that the airflow in the airflow cavity 721 is blown into the upper equal diameter section 64 through the outlet 722.

[0058] The primary filter unit 8 includes a primary ring plate 81 fixedly connected to the outlet end pipe 65, several primary frames 82, and a primary filter screen 83. The primary frames 82 are arranged in a crisscross pattern on the inner peripheral wall of the primary ring plate 81. The primary filter screen 83 is fixedly connected to the primary frames 82 and distributed between adjacent primary frames 82. The primary filter screen 83 is located between the air inlet chamber a and the air outlet chamber b.

[0059] A secondary filter unit 9 is also installed inside the connecting pipe 4. The secondary filter unit 9 is located above the primary filter unit 8. The lower part of the secondary filter unit 9 is the air outlet chamber b, and the upper part is the collection chamber c that communicates with the heat storage chamber 2. The secondary filter unit 9 includes a secondary ring plate 91 fixedly connected to the inner wall of the connecting pipe 4, several secondary skeletons 92, and a secondary filter screen 93. The secondary skeletons 92 are arranged in a crisscross pattern on the inner peripheral wall of the secondary ring plate 91. The secondary filter screen 93 is fixedly connected to the secondary skeleton 92 and distributed between adjacent secondary skeletons 92. The secondary filter screen 93 covers the entire connecting pipe 4.

[0060] In one embodiment, how does the intake device block particulate matter from the exhaust gas?

[0061] Specifically, the connecting seat 71 is connected to the base plate 61, so that the outlet of the outlet 722 is aligned with the upper equal diameter section 64 of the corrugated pipe 6. The upper end of the connecting pipe 4 is fixedly connected to the heat storage chamber 2 through a flange, and the lower end is connected to the air inlet pipe 3 through a flange. The end of the air inlet pipe 3 is connected to the exhaust gas supply. After the switch is turned on, the exhaust gas enters each connecting pipe 4 from the air inlet pipe 3 and then enters the heat storage chamber 2.

[0062] The exhaust gas enters the bellows 6 from the inlet end of the connecting pipe 4. At this time, the gas is in the intake chamber a. The particulate matter in the exhaust gas is isolated by the primary filter screen 83. The exhaust gas continues to flow upward and reaches the outlet chamber b. A small number of particles are blocked again by the secondary filter screen 93 on the secondary filter unit 9. The airflow enters the collection chamber c.

[0063] During this process, the ball 54 in the shaking centering unit 5 supports the upper equal diameter section 64 of the bellows 6 to suppress the swaying of the bellows 6, limit the bellows 6, and reduce the loss of airflow when the airflow hits the inner wall of the bellows 6.

[0064] The waste gas that reaches the collection chamber c flows into the heat storage chamber 2 for further processing.

[0065] In another embodiment, the device can also self-clean the filter.

[0066] Specifically, a regenerative thermal oxidizer (RTO) is an environmentally friendly device that recovers heat through a regenerator to achieve efficient waste gas treatment. During the continuous emission of waste gas, the initial flow direction of the waste gas is from the inlet chamber a to the outlet chamber b. Many particulate matter will be attached to the first-stage filter screen 83, which is the first to come into contact with the untreated waste gas. When the particulate matter accumulates to a certain extent, the airflow discharged from the outlet pipe 65 of the corrugated pipe 6 will decrease. However, the airflow in the inlet pipe 3 is constant, so the gas will be squeezed into the inlet chamber a of the connecting pipe 4. The airflow in the inlet chamber a increases, and the pressure generated also increases. At this time, airflow will pass through the guide unit 7.

[0067] Gas enters the airflow chamber 721 through the connection between the base plate 61 and the connecting seat 71. The airflow pushes the block 73 to the top of the guide tube 72, and then connects with the airflow chamber 721 through the outlet 722. The airflow chamber 721 is connected to the inlet chamber a. The airflow is discharged from the outlet 722 into the outlet chamber b. Affected by the angle and position of the outlet 722, the airflow blows out onto the lower edge of the upper equal diameter section 64 and the outlet end pipe 65. At this time, the corrugated section 63 of the corrugated pipe 6 begins to sway irregularly.

[0068] The secondary filter 93 filters the airflow discharged from the outlet 722 again, so that the gas without particulate matter enters the collection chamber c and is discharged into the heat storage chamber 2.

[0069] When each sphere 54 is subjected to radial force from the upper equal diameter section 64, it causes the guide rod 52 to extend and retract. The upper equal diameter section 64 pushes the sphere 54 to compress the spring 55. Then the spring 55 releases its elastic force, pushing the sphere 54 to return to its original position. At the same time, it pushes the upper equal diameter section 64, increasing the swaying amplitude of the bellows 6.

[0070] During the shaking of the bellows 6, the particles attached to the lower surface of the primary filter screen 83 will be shaken out and pushed back into the intake pipe 3 by the airflow, and discharged from the other end of the intake pipe 3.

[0071] When the area where the particles are attached is large, the airflow in the guide pipe 72 continues to increase, which in turn increases the swaying amplitude of the bellows 6, causing the first-stage ring plate 81 to collide with the inner wall of the connecting pipe 4, thus knocking down the stubborn particles on the lower surface of the first-stage filter screen 83.

[0072] After the particles attached to the lower surface of the primary filter screen 83 are cleaned, the airflow in the inlet chamber a of the connecting pipe 4 returns to a stable state. The block 73 falls into the limiting hole 711 under the influence of gravity, isolating the airflow chamber 721 from the inlet chamber a, so that the airflow only blows out from the bellows 6 through the primary filter unit 8 to the outlet chamber b. The ball 54 continues to limit the upper equal diameter section 64.

[0073] In another embodiment, the device can also be used for manual cleaning of the filter.

[0074] Specifically, when the device is not in use, a certain amount of particles will still be attached to the primary filter screen 83 of the primary filter unit 8. The operator can hold the limiting ring 53 by hand and move the ball 54 back and forth through the guide rod 52. At this time, the ball 54 will abut against the upper equal diameter section 64, thereby causing the upper equal diameter section 64 to shake, causing the particles on the primary filter screen 83 to fall off. Since there is no airflow at the bottom, the particles on the primary filter screen 83 can fall off smoothly.

[0075] In summary, this device, with its corrugated pipe 6 and primary filter 83, can block particulate matter in the exhaust gas from the inlet pipe 3, preventing it from entering the heat storage chamber 2. This avoids the problem of high exhaust gas flow rates and strong scouring of the ceramic body by the particles, which would further aggravate surface wear. Furthermore, the corrugated pipe 6 is expandable; when the primary filter 83 is blocked, the unstable airflow within it can cause the outlet pipe 65 to shake, thus causing the primary filter unit 8 to shake as well. This allows the particles attached to the primary filter 83 to fall off, enabling the device to clean itself. This is very convenient and avoids the problem of difficult-to-clean filtration devices, which could reduce the flow rate of exhaust gas and affect the overall treatment efficiency.

[0076] By incorporating a shaking centering unit 5, under stable conditions, the ball 54 supports the upper equal-diameter section 64, ensuring that the bellows 6 remains vertical and preventing it from sliding. This prevents airflow from being blown onto the pipe wall and causing some loss of airflow. Even when the primary filter screen 83 is clogged, the ball 54 can still move back and forth to move the bellows 6, limiting the upper equal-diameter section 64 on one hand and accelerating the swing amplitude of the bellows 6 on the other. In the off state, the ball 54 can collide with the upper equal-diameter section 64 by manually moving the limiting ring 53, causing the bellows 6 to shake and clean the particles on the primary filter screen 83. The whole process is convenient and quick, without the need for manual entry into the device or disassembly of the device area for cleaning.

[0077] By setting up the flow guiding unit 7, when the airflow in the corrugated pipe 6 is unstable, a certain amount of airflow is blown from the air inlet pipe 3 into the flow guiding pipe 72, and blown from the outlet 722 into the equal diameter section 64. Due to the lever principle, the swaying amplitude of the corrugated section 63 is greater, which also improves the cleaning efficiency to a certain extent.

[0078] By setting up a block 73, when the airflow moves from the inlet chamber a to the outlet chamber b, if the primary filter unit 8 is blocked, the impact force of the airflow will cause the block 73 to open a new passage for the waste airflow to flow out. At the same time, under smooth conditions, its own gravity will block the limiting hole 711, leaving only the bellows 6 as a passage to enter the outlet chamber b, so as to ensure the airflow in the bellows 6 is stable and will not be lost due to diversion, thereby improving the processing efficiency of the entire device.

[0079] By setting up a secondary filtration unit 9, particles that have not yet been blocked in the primary filtration unit 8 can be blocked again, and particles in the gas discharged from the outlet 722 can also be blocked. This double protection prevents particles from entering the heat storage chamber 2, increasing the protection performance and improving the processing efficiency.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A waste gas inlet device for an RTO incinerator, characterized in that: The incinerator body (1) includes a furnace body (1) having no less than three heat storage chambers (2), an air inlet pipe (3) and a flow guiding unit (7). Each heat storage chamber (2) and the air inlet pipe (3) are connected by a connecting pipe (4). The connecting pipe (4) is equipped with no less than three shaking centering units (5) at equal intervals along the circumference. The connecting pipe (4) has an air inlet chamber (a) and an air outlet chamber (b). The air inlet chamber (a) is connected to the air inlet pipe (3), and the air outlet chamber (b) is connected to the heat storage chamber (2). A corrugated pipe (6) is installed on the inner wall of the connecting pipe (4). A primary filter unit (8) for blocking exhaust gas particles in the corrugated pipe (6) is fixedly connected at the outlet of the corrugated pipe (6). The primary filter unit (8) is located between the air inlet chamber (a) and the air outlet chamber (b). The shaking centering unit (5) has an elastically extendable guide rod (52), and a ball (54) is fixedly connected to the end of the guide rod (52) located inside the connecting pipe (4). The ball (54) abuts against the outer peripheral wall of the corrugated pipe (6). The flow guiding unit (7) has a flow guiding pipe (72) communicating with the air inlet chamber (a). A plurality of outlets (722) communicating with the air outlet chamber (b) are opened on one side of the flow guiding pipe (72), and the outlets (722) face the corrugated pipe (6). The flow guiding unit (7) also includes a connecting seat (71), and the flow guiding pipe (72) is located above the connecting seat (71) and has an airflow cavity (721) with an opening facing downward. The center of the connecting seat (71) has a limiting hole (711), the cross-sectional area of ​​the limiting hole (711) gradually narrows from top to bottom, and the diameter of the top of the limiting hole (711) is the same as the diameter of the airflow cavity (721). A block (73) is slidably connected up and down inside the airflow cavity (721), and the lower end of the block (73) has a limiting part (731) that matches the limiting hole (711). The corrugated pipe (6) has, from bottom to top, a base plate (61), a lower equal diameter section (62), a corrugated section (63), an upper equal diameter section (64), and an outlet end pipe (65). The outlet end pipe (65) is connected to the primary filter unit (8). The base plate (61) is fixedly connected to the inner wall of the connecting pipe (4). The upper equal diameter section (64) is located above the corrugated section (63). The length of the upper equal diameter section (64) is greater than the length of the lower equal diameter section (62). The connecting seat (71) is fixedly connected to the upper surface of the base plate (61). The connecting seat (71) is connected to the base plate (61) so that the airflow chamber (721) and the air inlet chamber (a) are connected.

2. The RTO incinerator exhaust gas inlet device according to claim 1, characterized in that: The shaking centering unit (5) also includes a housing (51), a limiting ring (53), a spring (55) and a sealing ring (56). The guide rod (52) passes through the outer wall of the connecting pipe (4) and is slidably installed inside the housing (51). The diameter of the limiting ring (53) is larger than that of the guide rod (52) and is fixedly installed at the outer end of the guide rod (52). The spring (55) is nested on the guide rod (52) and located inside the connecting pipe (4). One end of the spring (55) abuts against the inner wall of the connecting pipe (4), and the other end abuts against the surface of the ball (54).

3. The RTO incinerator exhaust gas inlet device according to claim 2, characterized in that: The sealing ring (56) is installed on the left and right sides inside the outer shell (51), with its outer end face abutting against the outer shell (51) and its inner end face abutting against the outer periphery of the guide rod (52) to form a seal.

4. The RTO incinerator exhaust gas inlet device according to claim 1, characterized in that: The cross-section of the outlet (722) is inclined upward, and the position of the outlet (722) is flush with the upper equal diameter section (64) so ​​that the airflow in the airflow cavity (721) is blown into the upper equal diameter section (64) through the outlet (722).

5. The RTO incinerator exhaust gas inlet device according to claim 4, characterized in that: The primary filter unit (8) includes a primary ring plate (81) fixedly connected to the inner wall of the outlet of the corrugated pipe (6), a number of primary frames (82) and a primary filter screen (83). The primary frames (82) are arranged in a crisscross pattern on the inner peripheral wall of the primary ring plate (81). The primary filter screen (83) is fixedly connected to the primary frames (82) and distributed between adjacent primary frames (82). The primary filter screen (83) is located between the air inlet chamber (a) and the air outlet chamber (b).

6. The RTO incinerator exhaust gas inlet device according to claim 1, characterized in that: A secondary filter unit (9) is also installed inside the connecting pipe (4). The secondary filter unit (9) is located above the primary filter unit (8). The lower part of the secondary filter unit (9) is the air outlet chamber (b), and the upper part is the collection chamber (c) connected to the heat storage chamber (2). The secondary filter unit (9) includes a secondary ring plate (91) fixedly connected to the inner wall of the connecting pipe (4), several secondary skeletons (92) and a secondary filter screen (93). The secondary skeletons (92) are arranged in a crisscross pattern on the inner peripheral wall of the secondary ring plate (91). The secondary filter screen (93) is fixedly connected to the secondary skeleton (92) and distributed between adjacent secondary skeletons (92). The secondary filter screen (93) covers the entire connecting pipe (4).

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