Exhaust pipe

Abstract

The invention relates to the technical field of exhaust pipes, in particular to an exhaust pipe which comprises a round pipe, a gas inlet pipe and a gas outlet pipe are connected to the two ends of the round pipe correspondingly, a resonance mechanism is arranged on the side, close to the gas inlet pipe, in the round pipe and changes the flowing direction and speed of waste gas, and a filtering mechanism is arranged on the side, close to the gas outlet pipe, in the round pipe and comprises a rotating disc. A plurality of air holes are annularly formed in the rotating disc at equal intervals, filter plates are fixedly arranged on the sides, close to the air inlet pipe, in the air holes, a driving mechanism is arranged on the side, away from the air inlet pipe, of the rotating disc, the driving mechanism comprises a rotating shaft, and the rotating shaft is coaxially and rotatably connected with the circular pipe through a bearing seat; the end of the impact rod makes impact contact with the outer wall of the side, close to the air outlet pipe, of the turntable. The filtering mechanism and the driving mechanism are arranged, the cleaning period of the filtering mechanism is greatly prolonged, for sailing in special environments and special weather, the maintenance cost of the aircraft is reduced, the use efficiency of the aircraft is also improved, and the design is ingenious.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust pipes, and in particular to an exhaust pipe. Background Art

[0002] The exhaust pipe is part of the engine's exhaust system, which mainly includes the exhaust manifold, exhaust pipe and muffler. Because the aircraft requires a lot of power, the exhaust gas discharged by the exhaust system will contain a large amount of inhalable particulate matter, which will cause great harm to the environment. Although a filter structure to block inhalable particulate matter will be set in the exhaust pipe, the inhalable particulate matter will completely block the filter structure after long-term use, which will not only affect the performance of the aircraft, but even cause irreversible damage to the aircraft power system.

[0003] Currently, the way to avoid clogging of aircraft exhaust systems is usually to clean and maintain them regularly. Although this method is reliable and effective, the clogging speed of the filter structure is not only proportional to the flight mileage of the aircraft, but also affected by the climate and environment. Moreover, the routes that the same aircraft is responsible for are not fixed, and some airports are unable to set up aircraft maintenance areas due to geographical restrictions, and the maintenance skills of aircraft accompanying personnel are relatively limited. This will affect the flight safety of aircraft in special climates or special environments. In view of this, the present invention proposes an exhaust pipe. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an exhaust pipe, which can effectively solve the problems in the prior art.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an exhaust pipe, comprising a circular pipe, wherein both ends of the circular pipe are respectively connected to an air inlet pipe and an air outlet pipe, and a resonance mechanism is provided on one side of the circular pipe near the air inlet pipe, wherein the resonance mechanism changes the flow direction and speed of the exhaust gas;

[0009] A filtering mechanism is provided inside the circular tube near the air outlet pipe, the filtering mechanism comprises a rotating disk, a plurality of air holes are provided in a circular structure with equal spacing, and a filter plate is fixed inside the air hole near the air inlet pipe;

[0010] A driving mechanism is provided on the side of the turntable away from the air inlet pipe, and the driving mechanism includes a rotating shaft, which is coaxially rotatably connected to the round tube through a bearing seat, and a collision rod is coaxially slidably connected to the middle of the rotating shaft, and the end of the collision rod collides and contacts with the outer wall of the turntable on the side close to the air outlet pipe.

[0011] Preferably, the resonance mechanism includes a plurality of curved pipes arranged in a circular equidistant structure, and the plurality of curved pipes are arranged in the same wave-shaped structure. The air inlet pipe is a closed structure near one end of the curved pipe, and the curved pipe passes through the end of the air inlet pipe near one end of the air inlet pipe, extends into the interior of the air inlet pipe and is connected with the interior of the air inlet pipe. Sound insulation cotton is coaxially fixed to the position of the circular tube relative to the plurality of curved pipes.

[0012] Preferably, the end of the bent pipe away from the air inlet pipe is connected to a fixed pipe, the air hole is a truncated cone structure, the turntable is provided with an annular groove that slidably cooperates with multiple fixed pipes, the turntable is provided with a blocking ring on the side away from the fixed pipe, the blocking ring is provided with a through opening at a position relative to the fixed pipe, the number of fixed pipes is half the number of air holes, and the multiple fixed pipes correspond one-to-one to some of the air holes, a plate groove is provided on the inner wall of the fixed pipe near the inside of the annular groove, and a partition is slidably connected to the inside of the plate groove.

[0013] Preferably, the end of the partition extends out of the plate groove to the outside and is fixed with a first magnet. Two tension springs are fixed between the outer walls of the first magnet and the outer wall of the fixed tube on both sides. The inner wall of the annular groove is provided with a vertical groove that slides with the partition. The inner walls on both sides of the vertical groove are both arc structures. The inner wall of the vertical groove is embedded with a second magnet that is attracted to the first magnet. One end of the inner wall of the first magnet is a slope structure, and the turntable is rotatably connected to the inner wall of the circular tube.

[0014] Preferably, the turntable is coaxially fixedly connected to the rotating shaft, a fixing ring is slidingly sleeved on the rotating shaft, a compression spring is connected between the fixing ring and the bearing seat, two ends of the compression spring are respectively connected and fixed to the bearing seat and the fixing ring, a first guide block is fixedly provided on the inner wall of the fixing ring, the outer wall of the rotating shaft is annularly and evenly spaced structure with a plurality of arc grooves slidably matched with the first guide block, the number of the arc grooves is equal to the number of air holes, and a guide groove slidably matched with the first guide block is provided between different ends of two adjacent arc grooves, a baffle is hingedly connected to the intersection of the guide groove with the arc groove at one end away from the turntable through a hinge shaft, the baffle is arranged in an inclined structure, an axis groove rotatably matched with the hinge shaft is provided on the rotating shaft, a coil spring is sleeved on the outer wall of the hinge shaft relative to the inside of the axis groove, and the outer end of the coil spring is connected and fixed to the inner wall of the axis groove.

[0015] Preferably, an inner ring is coaxially rotated on the outside of the fixed ring, the inner wall of the inner ring and the outer wall of the fixed ring are both concave structures, a ratchet is sleeved at the recessed part of the circumferential outer wall of the fixed ring, a pawl that meshes with the ratchet is hinged inside the inner ring, a supporting spring is fixedly arranged between the side wall of the pawl and the inner wall of the inner ring, an outer ring is coaxially arranged on the outer side of the inner ring, a plurality of shift plates are evenly fixedly arranged between the outer ring and the inner ring, the shift plates are arranged in a V-shaped structure, a second guide block is fixedly arranged on one side of the outer wall of the outer ring, and a bidirectional threaded groove that slides with the second guide block is opened on the inner wall of the circular tube.

[0016] Preferably, the impact rod is coaxially fixedly connected with a circular disc at one end away from the turntable, an extrusion spring is fixedly arranged between the circular disc and the outer wall of the bearing seat, a plurality of ball grooves are evenly arranged on the side wall of the circular disc away from the turntable, the ball grooves are of a hemispherical structure and the edges of the opening ends are arranged in an arc surface, an extrusion ball which is plugged into the ball groove is arranged inside the ball groove at the lower end, the extrusion ball is connected and fixed to the inner wall of the circular tube, and the impact rod rotates synchronously with the rotating shaft.

[0017] Preferably, the air inlet pipe is also connected to a flange at one end away from the circular tube, a discharge port is opened at a position between the turntable and the sound insulation cotton on the bottom surface of the circular tube, a fixed seat is fixedly provided at a position of the bottom surface of the circular tube relative to the discharge port, the fixed seat is a U-shaped structure, a collecting box is inserted inside the fixed seat, the outer walls on both sides of the collecting box and the inner walls on both sides of the fixed seat are T-shaped structures and are plugged into each other, two rubber pads are symmetrically fixedly provided on the inner wall of the fixed seat, the rubber pads prevent the collecting box from sliding out of the fixed seat, and a connecting ring is also sleeved on the end of the circular tube close to the air outlet pipe.

[0018] Beneficial Effects

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. The present invention is provided with a filtering mechanism and a driving mechanism, and the inhalable particulate matter in the aircraft exhaust can be intercepted and collected through the mutual cooperation of the two, and the filter plate is automatically cleaned through the reciprocating motion of the impact rod, so as to avoid the filter plate from being blocked too quickly during use, and greatly prolong the cleaning cycle of the filtering mechanism. For navigation in special environments and special weather conditions, it not only prevents the problem of the filtering mechanism of the aircraft being blocked for a short time and difficult to clean under maintenance-free conditions, but also effectively prolongs the sustainable use time of the aircraft filtering mechanism, reduces the maintenance cost of the aircraft, and thus improves the use efficiency of the aircraft. The design is ingenious.

[0021] 2. The present invention is provided with a resonance mechanism, which can not only increase the pressure in the exhaust pipe to discharge the exhaust gas faster and improve the output power of the engine, but also change the flow direction and speed of the exhaust gas to enable it to better alternate between exhaust and intake with the engine, and at the same time can reduce the noise pollution of the exhaust pipe, thus achieving multiple goals at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of a circular tube of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of a circular tube of the present invention;

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the elbow of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the elbow end of the present invention;

[0028] Figure 6 This is a schematic diagram of the outer wall structure of the turntable on the side close to the elbow of the present invention;

[0029] Figure 7 It is a schematic diagram of the decomposed structure of the driving mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the connection structure between the fixing ring and the inner ring of the present invention.

[0031] The numbers in the figure represent: 1, round tube; 2, air inlet pipe; 3, air outlet pipe; 4, resonance mechanism; 5, filtering mechanism; 6, turntable; 7, air hole; 8, filter plate; 9, driving mechanism; 10, rotating shaft; 11, impact rod; 12, bent pipe; 13, sound insulation cotton; 14, fixed pipe; 15, ring groove; 16, plate groove; 17, partition; 18, first magnet; 19, tension spring; 20, vertical groove; 21, second magnet; 22, fixed ring; 23, first guide block; 24, arc groove; 25, guide groove; 26, Articulated shaft; 27, baffle; 28, shaft groove; 29, coil spring; 30, inner ring; 31, ratchet; 32, pawl; 33, support spring; 34, outer ring; 35, paddle; 36, second guide block; 37, two-way thread groove; 38, disc; 39, extrusion spring; 40, ball groove; 41, extrusion ball; 42, flange; 43, discharge port; 44, fixed seat; 45, collection box; 46, rubber pad; 47, connecting ring; 48, blocking ring; 49, through-port; 50, bearing seat; 51, compression spring. DETAILED DESCRIPTION

[0032] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0033] An exhaust pipe, reference Figure 1-Figure 8 , including a circular tube 1, with an air inlet pipe 2 and an air outlet pipe 3 connected to both ends of the circular tube 1 respectively, and a flange 42 is also connected to the end of the air inlet pipe 2 away from the circular tube 1, a discharge port 43 is opened at a position between the turntable 6 and the sound insulation cotton 13 on the bottom surface of the circular tube 1, and a fixing seat 44 is fixedly arranged at a position of the bottom surface of the circular tube 1 relative to the discharge port 43, and the fixing seat 44 is a U-shaped structure, and a collecting box 45 is inserted inside the fixing seat 44, and the outer walls on both sides of the collecting box 45 and the inner walls on both sides of the fixing seat 44 are T-shaped structures and are plugged into each other, and two rubber pads 46 are symmetrically fixed on the inner wall of the fixing seat 44, and the rubber pads 46 prevent the collecting box 45 from sliding out of the fixing seat 44, and a connecting ring 47 is also sleeved on the end of the circular tube 1 close to the air outlet pipe 3.

[0034] A resonance mechanism 4 is provided on one side of the circular tube 1 near the air inlet pipe 2. The resonance mechanism 4 changes the flow direction and speed of the exhaust gas. The resonance mechanism 4 includes a plurality of curved pipes 12 arranged in a ring-shaped structure with equal spacing. The plurality of curved pipes 12 are arranged in the same wave-shaped structure. The end of the air inlet pipe 2 near the curved pipe 12 is a closed structure. The end of the curved pipe 12 near the air inlet pipe 2 penetrates the end of the air inlet pipe 2 and extends into the interior thereof and is connected with the interior of the air inlet pipe 2. A sound insulation cotton 13 is coaxially fixedly provided inside the circular tube 1 relative to the position of the plurality of curved pipes 12.

[0035] A filtering mechanism 5 is provided on the inner side of the circular tube 1 near the air outlet pipe 3. The filtering mechanism 5 includes a rotating disk 6. A plurality of air holes 7 are provided on the rotating disk 6 in an annular structure with equal spacing. A filter plate 8 is fixedly provided on the air hole 7 near the air inlet pipe 2. A fixed pipe 14 is connected to the end of the curved pipe 12 away from the air inlet pipe 2. The air hole 7 is a truncated cone structure. An annular groove 15 is provided on the rotating disk 6 with which the plurality of fixed pipes 14 are slidably matched. A blocking ring 48 is provided on the side of the rotating disk 6 away from the fixed pipe 14. A through hole 49 is provided on the blocking ring 48 at a position relative to the fixed pipe 14. The number of the fixed pipes 14 is half the number of the air holes 7. The plurality of fixed pipes 14 and some of the air holes are connected. 7 correspond one to one, a plate groove 16 is provided on the inner wall of the fixed tube 14 near the inner part of the annular groove 15, a partition 17 is slidably connected to the inner part of the plate groove 16, an end of the partition 17 passes through the plate groove 16 and extends to the outside and is fixed with a first magnet 18, two tension springs 19 are fixed between the outer sides of the first magnet 18 and the outer wall of the fixed tube 14, a vertical groove 20 is provided on the inner wall of the annular groove 15 for slidingly cooperating with the partition 17, the inner walls on both sides of the vertical groove 20 are both arc structures, a second magnet 21 that is mutually attracted to the first magnet 18 is embedded in the inner wall of the vertical groove 20, one end of the inner wall of the first magnet 18 is in an inclined structure, and the turntable 6 is rotatably connected to the inner wall of the circular tube 1.

[0036] A driving mechanism 9 is provided on the side of the turntable 6 away from the air inlet pipe 2. The driving mechanism 9 includes a rotating shaft 10. The rotating shaft 10 is coaxially rotatably connected with the round tube 1 through a bearing seat 50. A striking rod 11 is coaxially slidably connected to the middle of the rotating shaft 10. The end of the striking rod 11 strikes and contacts the outer wall of the turntable 6 near the air outlet pipe 3. The turntable 6 is coaxially fixedly connected with the rotating shaft 10. A fixing ring 22 is provided on the sliding sleeve of the rotating shaft 10. A compression spring 51 is connected between the fixing ring 22 and the bearing seat 50. The two ends of the compression spring 51 are respectively connected and fixed to the bearing seat 50 and the fixing ring 22. The inner wall of the fixing ring 22 is fixed with a first A guide block 23, the outer wall of the rotating shaft 10 is annular and evenly spaced and is provided with a plurality of arc grooves 24 that are slidably matched with the first guide block 23, the number of the arc grooves 24 is equal to the number of the air holes 7, and a guide groove 25 that is slidably matched with the first guide block 23 is provided between different ends of two adjacent arc grooves 24, and a baffle 27 is hingedly connected to the intersection of the arc groove 24 with the end of the guide groove 25 away from the rotating disk 6 through a hinge shaft 26, and the baffle 27 is arranged in an inclined structure, and an axis groove 28 that is rotatably matched with the hinge shaft 26 is provided on the rotating shaft 10, and a coil spring 29 is sleeved on the position of the outer wall of the hinge shaft 26 relative to the inside of the axis groove 28 The outer end of the coil spring 29 is connected and fixed to the inner wall of the shaft groove 28, an inner ring 30 is coaxially rotated outside the fixing ring 22, the inner wall of the inner ring 30 and the outer wall of the fixing ring 22 are both concave structures, a ratchet 31 is sleeved at the concave part of the outer wall of the circumference of the fixing ring 22, a pawl 32 engaged with the ratchet 31 is hinged inside the inner ring 30, a supporting spring 33 is fixed between the side wall of the pawl 32 and the inner wall of the inner ring 30, an outer ring 34 is coaxially arranged on the outer side of the inner ring 30, a plurality of shift plates 35 are evenly fixed between the outer ring 34 and the inner ring 30, the shift plates 35 are arranged in a V-shaped structure, and a There is a second guide block 36, and a bidirectional threaded groove 37 that slides with the second guide block 36 is opened on the inner wall of the circular tube 1. A disc 38 is coaxially fixedly connected to the end of the impact rod 11 away from the turntable 6. An extrusion spring 39 is fixed between the disc 38 and the outer wall of the bearing seat 50. A plurality of ball grooves 40 are evenly opened on the side wall of the disc 38 away from the turntable 6. The ball groove 40 is a hemispherical structure and the edge of the open end is arranged in an arc surface. An extrusion ball 41 that is plugged into the ball groove 40 is arranged inside the ball groove 40 at the lower end. The extrusion ball 41 is connected and fixed to the inner wall of the circular tube 1, and the impact rod 11 rotates synchronously with the rotating shaft 10.

[0037] Working principle: The staff can fix the device to the exhaust system of the aircraft through the flange 42, guide the exhaust gas discharged from the aircraft into the device through the air inlet pipe 3, and fix the round tube 1 and the aircraft to each other through the connecting ring 47 to prevent the round tube 1 from gradually bending downward under the action of gravity;

[0038] The exhaust gas entering the circular tube 1 will first pass through the resonance mechanism 4. The multiple curved pipes 12 in the resonance mechanism 4 are designed with the same curvature and the same number of bends, so that the exhaust gas passing therethrough generates pressure fluctuations in the curved pipes 12. These pressure fluctuations will be reflected back and forth in the resonance cavity to form a resonance effect. On the one hand, the resonance effect will increase the pressure in the exhaust pipe, so that the exhaust gas is discharged faster, thereby increasing the output power of the engine. On the other hand, the resonance cavity can also change the flow direction and speed of the exhaust gas so that it can better alternate exhaust and intake with the engine. Moreover, after adding the resonance mechanism 4, it can also play the role of reducing the noise pollution of the exhaust pipe, achieving multiple goals at one stroke, reducing the noise pollution of the aircraft exhaust system. In addition, the sound insulation cotton 13 arranged on the outer side of the resonance mechanism can further reduce the noise penetration;

[0039] After the exhaust gas passes through the resonance mechanism 4, it will enter the inside of the filter mechanism 5 through the multiple fixed pipes 14. These exhaust gases will pass through the air holes 7 corresponding to the fixed pipes 14 to the other side of the turntable 6. When these exhaust gases pass through the air holes 7, the inhalable particles contained therein will be blocked by the filter plate 8, and the clean gas will pass through the filter plate 8 to the drive mechanism 9. Because the multiple elbows 12 greatly increase the flow rate of the exhaust gas by reducing the diameter, the exhaust gas entering the drive mechanism 9 can generate sufficient thrust on the paddle 35. In addition, the paddle 35 itself is arranged in a V-shaped structure, and the obtuse angle surface faces the direction of the turntable 6, so that the inner ring 30 and the outer ring 34 can be driven to rotate through the paddle 35. The rotation of the two is limited by the meshing contact relationship between the ratchet wheel 31 and the pawl 32, and they can only rotate in the same direction all the time. Then, under the sliding connection effect of the second guide block 36 and the bidirectional thread groove 37, the fixing ring 22 will be displaced away from the turntable 6 as a whole. In this process, if the fixing ring 22 wants to move toward the turntable 6, it needs to rotate in the opposite direction, or move to the end of the bidirectional thread groove 37 farthest from the turntable 6 and enter the other end of the bidirectional thread groove 37 before it can move back. However, due to the restriction of the ratchet wheel 31 and the pawl 32, the reverse rotation naturally cannot occur. Therefore, when the fixing ring 22 moves toward the bearing seat 50, it will not move back due to the compression spring 51;

[0040] When the position of the fixed ring 22 moves to the farthest end due to the impact of the exhaust gas, the first guide block 23 will first squeeze the baffle 27 and move to the farthest position inside the guide groove 25 from the turntable 6. After the first guide block 23 passes the baffle 27, the baffle 27 will return to its original position under the action of the coil spring 29, and then it will be tilted at the intersection of the guide groove 25 and the arc groove 24 to guide the first guide block 23. When the second guide block 36 and the two spirals of the bidirectional thread groove 37 are at the intersection, the compression spring 51 can play the effect of pushing back the inner ring 30. In this process, the inner ring The rotation direction of the outer ring 34 remains unchanged, and the second guide block 36 enters into another symmetrical spiral from the original corresponding spiral. The design of the bidirectional thread groove 37 not only helps the fixed ring 22 to move, but also plays a limiting role. The first guide block 23 that moves back will enter the arc groove 24 under the guidance of the baffle 27. Since the rotating shaft 10 and the rotating disk 6 are rotatably connected to the round tube 1, and the fixed ring 22 is connected and fixed to the bearing seat 50 through the compression spring 51, the fixed ring 22 cannot rotate. The first guide block 23 squeezes the lower rotating shaft 10 to drive the rotating disk 6 to partially rotate. Since the number of the arc grooves 24 is the same as the number of the air holes 7, the arc grooves 24 can just rotate the other half of the air holes 7 that were originally staggered with the fixed tube 14 to the position corresponding to the fixed tube 14. The air holes 7 that originally corresponded to the fixed tube 14 are moved to the position staggered with multiple fixed tubes 14. Moreover, these staggered air holes 7 are also blocked by the blocking ring 48, so that the two ends cannot be connected to the resonance mechanism 4 and the filtering mechanism 5. When the rotating disk 6 rotates, the vertical grooves 20 The inner wall will first press the first magnet 18 back into the fixed tube 14 through the inclined surface of the bottom surface of the first magnet 18 to close the open end of the fixed tube 14 to prevent the exhaust gas from leaking out, and under the setting of the tension spring 19, after the first magnet 18 rotates at a very small angle, when the attraction force of the two magnets is less than the contraction force of the tension spring 19, the partition 17 will be quickly retracted into the plate groove 16, and when the fixed tube 14 corresponds to the next vertical groove 20, the attraction force of the two magnets will play a role in pulling the partition 17 out of the plate groove 16, ensuring that the inside of the fixed tube 14 corresponds to the air hole 7 and the through-hole 49 one by one;

[0041] On the other hand, during the rotation, the rotating shaft 10 will also rotate together with the impact rod 11, and the disc 38 on the impact rod 11 will also do the same. Since the position of the squeezing ball 41 cannot be changed, the disc 38 will move the impact rod 11 toward the turntable 6. Because the compression spring 51 releases the force very quickly, the rotation of the rotating shaft 10 and the impact rod 11 will also be very fast. The disc 38 will also drive the impact rod 11 to rush towards the turntable 6 at a faster speed, and then it will impact the turntable 6. As a result, the inhalable particles trapped on the filter plate 8 will be scattered during the impact and enter the space on the side of the turntable 6 close to the air inlet pipe 2. The space on the side of the turntable 6 close to the air inlet pipe 2 is in a closed state, and the exhaust gas will not pass through the cavity, so these inhalable particles will not be entrained by the exhaust gas again. At the same time, under the action of gravity, these inhalable particles will slide into the collection box 45, and the driver only needs to remove the collection box 45 regularly for cleaning.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An exhaust pipe, comprising a round pipe (1), wherein both ends of the round pipe (1) are respectively connected to an air inlet pipe (2) and an air outlet pipe (3), wherein: Also includes: A resonance mechanism (4) is arranged inside the circular tube (1) on a side close to the air inlet pipe (2) and is used to change the flow direction and speed of the exhaust gas; A filtering mechanism (5) is arranged inside the circular tube (1) on a side close to the air outlet pipe (3); the filtering mechanism (5) comprises a rotating disk (6), a plurality of air holes (7) are provided in a circular structure with equal spacing, and a filter plate (8) is fixedly arranged inside the air hole (7) on a side close to the air inlet pipe (2); The driving mechanism (9) is arranged on a side of the rotating disk (6) away from the air inlet pipe (2); the driving mechanism (9) comprises a rotating shaft (10), the rotating shaft (10) is coaxially rotatably connected to the round tube (1) through a bearing seat (50), a striking rod (11) is coaxially slidably connected to the middle of the rotating shaft (10), and the end of the striking rod (11) strikes and contacts the outer wall of the rotating disk (6) on the side close to the air outlet pipe (3).

2. An exhaust pipe according to claim 1, characterized in that: The resonant mechanism (4) comprises a plurality of curved pipes (12) arranged in an annular structure with equal spacing, and the plurality of curved pipes (12) are arranged in the same wave-shaped structure; a sound insulation cotton (13) is coaxially fixedly arranged inside the circular tube (1) at positions corresponding to the plurality of curved pipes (12); The end of the air inlet pipe (2) close to the curved pipe (12) is a closed structure, and the end of the curved pipe (12) close to the air inlet pipe (2) penetrates the end of the air inlet pipe (2), extends into the interior thereof, and is in communication with the interior of the air inlet pipe (2).

3. An exhaust pipe according to claim 2, characterized in that: The end of the curved pipe (12) away from the air inlet pipe (2) is connected to a fixed pipe (14), and the rotating disk (6) is provided with an annular groove (15) that is slidably matched with the plurality of fixed pipes (14); A blocking ring (48) is provided on the side of the rotating disk (6) away from the fixed tube (14), and a through hole (49) is provided on the blocking ring (48) at a position relative to the fixed tube (14).

4. An exhaust pipe according to claim 3, characterized in that: The number of the fixed tubes (14) is half the number of the air holes (7), and the plurality of fixed tubes (14) correspond one to one with some of the air holes (7); A plate groove (16) is provided on the inner wall of the fixed tube (14) near the inside of the annular groove (15), and a partition plate (17) is slidably connected inside the plate groove (16).

5. An exhaust pipe according to claim 4, characterized in that: The end of the partition plate (17) passes through the plate groove (16) and extends to the outside and is fixedly provided with a first magnet (18); two tension springs (19) are fixedly provided between the outer wall of the first magnet (18) and the outer wall of the fixed tube (14); The inner wall of the annular groove (15) is provided with a vertical groove (20) which is slidably matched with the partition plate (17), and the inner wall of the vertical groove (20) is embedded with a second magnet (21) which is mutually attracted to the first magnet (18), and one end of the inner wall of the first magnet (18) is in an inclined structure.

6. An exhaust pipe according to claim 5, characterized in that: The rotating disk (6) is coaxially fixedly connected to the rotating shaft (10), and a fixing ring (22) is slidingly sleeved on the rotating shaft (10); A compression spring (51) is connected between the fixing ring (22) and the bearing seat (50), and two ends of the compression spring (51) are respectively connected and fixed to the bearing seat (50) and the fixing ring (22).

7. An exhaust pipe according to claim 6, characterized in that: The inner wall of the fixing ring (22) is fixedly provided with a first guide block (23), and the outer wall of the rotating shaft (10) is provided with a plurality of arc grooves (24) in a ring-shaped structure with equal spacing, which are slidably matched with the first guide block (23). A guide groove (25) slidably matched with the first guide block (23) is provided between different ends of two adjacent arc-shaped grooves (24); a baffle (27) is hingedly connected to the intersection of the end of the guide groove (25) away from the rotating disk (6) and the arc-shaped groove (24) through a hinge shaft (26); The baffle (27) is arranged in an inclined structure, and the rotating shaft (10) is provided with an axis groove (28) for rotationally cooperating with the hinge shaft (26). A coil spring (29) is sleeved on the outer wall of the hinge shaft (26) at a position relative to the inside of the axis groove (28), and the outer end of the coil spring (29) is connected and fixed to the inner wall of the axis groove (28).

8. An exhaust pipe according to claim 6, characterized in that: An inner ring (30) is coaxially rotatably sleeved outside the fixing ring (22), and the inner wall of the inner ring (30) and the outer wall of the fixing ring (22) are both concave structures; A ratchet (31) is sleeved at a concave portion of the circumferential outer wall of the fixing ring (22), a ratchet pawl (32) is hingedly connected inside the inner ring (30) and is in meshing contact with the ratchet (31), and a supporting spring (33) is fixedly arranged between the side wall of the ratchet pawl (32) and the inner wall of the inner ring (30); An outer ring (34) is coaxially arranged on the outer side of the inner ring (30), a plurality of shifting plates (35) are evenly fixedly arranged between the outer ring (34) and the inner ring (30), the shifting plates (35) are arranged in a V-shaped structure, a second guide block (36) is fixedly arranged on one side of the outer wall of the outer ring (34), and a bidirectional thread groove (37) slidably matched with the second guide block (36) is opened on the inner wall of the circular tube (1).

9. An exhaust pipe according to claim 6, characterized in that: The end of the impact rod (11) away from the rotating disk (6) is coaxially fixedly connected with a disk (38), a compression spring (39) is fixedly arranged between the disk (38) and the outer wall of the bearing seat (50), and a side wall of the disk (38) away from the rotating disk (6) is evenly provided with a plurality of ball grooves (40); The ball groove (40) is a hemispherical structure and the edge of the opening end is arranged in an arc surface. An extrusion ball (41) which is plugged into the ball groove (40) is arranged inside the ball groove (40) at the lower end. The extrusion ball (41) is connected and fixed to the inner wall of the circular tube (1). The impact rod (11) rotates synchronously with the rotating shaft (10).

10. An exhaust pipe according to claim 1, characterized in that: The air inlet pipe (2) is also connected to a flange (42) at one end away from the circular tube (1), and a discharge port (43) is provided on the bottom surface of the circular tube (1) at a position between the rotating disk (6) and the sound insulation cotton (13); A fixing seat (44) is fixedly arranged on the bottom surface of the circular tube (1) at a position relative to the discharge port (43); a collecting box (45) is inserted into the fixing seat (44); two rubber pads (46) are symmetrically fixedly arranged on the inner wall of the fixing seat (44); the rubber pads (46) prevent the collecting box (45) from sliding out of the fixing seat (44).

Images