Tubular flow dust-containing ventilation and exhaust mechanism

Abstract

The utility model relates to the technical field of pipeline cleaning, and discloses a tubular flow dust-containing ventilation and exhaust mechanism which comprises an exhaust pipe, the side wall of the exhaust pipe is fixedly connected with an air inlet pipe used for introducing dust-containing gas, one end of the exhaust pipe is fixedly connected with a blockage clearing pipe, and a whistle type sounder is arranged in the blockage clearing pipe. A whistle type sounder is connected with an air source through an air supply pipe, compressed air in the air source passes through the whistle type sounder, flows at a high speed and vibrates under the action of the whistle type sounder, the vibration is spread out in the form of sound waves through a gas medium, and the frequency range of the vibration is generally dozens of hertz to several kilohertz. Acoustic waves enable accumulated dust particles to vibrate in the propagation process, due to the fact that the binding force between the accumulated dust particles and the binding force between the accumulated dust and the heated surface are relatively weak, under the action of the acoustic waves, the binding force is damaged, and the accumulated dust particles can fall off from the inner wall of the exhaust pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline cleaning technical field, concretely relates to a tubular flow dust containing ventilation and exhaust mechanism. BACKGROUND

[0002] The acoustic wave soot blower is an equipment applied to main pipeline soot blowing, is mainly applied to heat exchangers and power plant denitration reactors such as pulverized coal, fuel oil and various gases as fuel heating furnace, atmospheric furnace, waste heat furnace, power station boiler etc., to remove the soot on the surface of superheater, convection section, coal economizer, preheater, denitration reactor catalyst and other components. The diaphragm type acoustic wave soot blower is widely applied to denitration reactor catalyst and boiler heat exchanger due to its high sound intensity, maintenance-free, flexible installation and other advantages.

[0003] The prior art such as Chinese patent "CN209819566U" provides an acoustic wave soot blower, which comprises a sound wave generator, a sound wave guide-out pipe, a universal bend pipe connected between the sound wave guide-out pipe and the sound wave generator, and a sealing device arranged between the sound wave guide-out pipe and the universal bend pipe. The end of the universal bend pipe is inserted into the sound wave guide-out pipe, and the outer wall of the universal bend pipe abuts against the inner wall of the sound wave guide-out pipe. The sealing device comprises an elastic ring sleeved on the universal bend pipe, an elastic ring sleeved on the elastic ring and fixed therewith, a compression ring sleeved on the universal bend pipe and threadedly connected with the outer wall of the universal bend pipe, and a clamp part sleeved on the elastic ring for compressing the elastic ring. The compression ring is arranged on the side of the elastic ring away from the sound wave guide-out pipe. The utility model has the following effects: the new mechanical structure is used to make the sealing effect between the sound wave guide-out pipe and the universal bend pipe in the acoustic wave soot blower good, effectively reduce the leakage of compressed air, and improve the working performance of the acoustic wave soot blower.

[0004] In the prior art, the motor and rotor of the rotary whistle type sound generator need regular maintenance. The motor should be regularly checked for lubrication, and generally once every half year. The blades on the rotor should be checked for wear and deformation, and the blades can be cleaned and balanced every year or so to ensure stable rotation and stable sound waves. However, since the sound generator is generally connected with the pipeline through a flange, it is troublesome to install and disassemble every time, and repeated disassembly and assembly of the flange can cause wear at the connection, resulting in a problem of reduced sealing performance. UTILITY MODEL CONTENTS

[0005] The purpose of the utility model is to solve the above problems and overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of tubular flow dust-containing ventilation exhaust mechanism, including exhaust pipe, the lateral wall of the exhaust pipe is fixedly connected with air inlet pipe for accessing dust-containing gas, one end of the exhaust pipe is fixedly connected with the pipe for clearing blockage, for cleaning dust adhered to the inner wall of exhaust pipe;

[0008] The connecting portion of the exhaust pipe and the pipe for clearing blockage is provided with a sealing mechanism for improving the air tightness of the connecting portion of the exhaust pipe and the pipe for clearing blockage.

[0009] The connecting portion of the exhaust pipe and the pipe for clearing blockage is provided with a connecting mechanism for connecting the exhaust pipe and the pipe for clearing blockage.

[0010] The inner wall of the pipe for clearing blockage is fixedly connected with a rotary trumpet sound generator for generating high-speed flow and vibrating airflow and injecting into the interior of the exhaust pipe.

[0011] As a preferred, one end of the pipe for clearing blockage away from the exhaust pipe is fixedly connected with an end cover, the air supply pipe connected to the rotary trumpet sound generator extends through the end cover to the outside of the pipe for clearing blockage for connecting the gas source, and the gas of the gas source should be inert gas.

[0012] As a preferred, a check valve is provided on the air supply pipe for preventing gas backflow, and a pressure relief valve is provided on the air supply pipe for pressure relief of the air supply pipe.

[0013] As a preferred, the sealing mechanism includes a disc, the disc is fixedly connected to one end of the exhaust pipe, one end of the pipe for clearing blockage corresponding to the disc is fixedly connected with a connecting disc, and the connecting disc is fixedly connected with the disc.

[0014] As a preferred, a ring groove is formed on one side of the connecting disc corresponding to the disc, a sealing ring is slidably connected to the inner wall of the ring groove, a spring is connected to the position between the sealing ring and the inner wall of the ring groove, and a groove for embedding the sealing ring is formed on the disc corresponding to the position of the sealing ring.

[0015] As a preferred, the connecting mechanism includes multiple sets of hinged rods, multiple sets of the hinged rods are hinged to one side of the connecting disc away from the disc and extend to the outside of the connecting disc, the hinged rods are fixedly connected with locking buckles at positions away from the connecting disc side of the disc for clamping the disc, and grooves for embedding the locking buckles are formed on the surface of the disc.

[0016] As a preferred, a rotating ring is axially rotated on the outer wall of the pipe for clearing blockage, an arc-shaped groove is formed on the inner wall of the rotating ring corresponding to the position of the hinged rod, guide columns are slidably connected to the inner wall of the arc-shaped groove, and the guide columns are fixedly connected with the hinged rods at corresponding positions.

[0017] As preferred, the first end face ratchet is fixedly connected with a second end face ratchet on the side away from the connecting disc, and the inner wall of the second end face ratchet is fixedly connected with a connecting key.

[0018] As preferred, the second end face ratchet is fixedly connected with a push block on the side away from the connecting disc, and the outer wall of the clearing block pipe is threadedly connected with a threaded sleeve through external threads, and the end face of the external threads abuts against the push block.

[0019] Beneficial effects are that:

[0020] Firstly, the utility model discloses a dust cleaning device for exhaust pipe, which comprises an exhaust pipe, a clearing block pipe and a sealing mechanism, wherein the exhaust pipe is provided with an air inlet pipe on the side wall, the clearing block pipe is connected to one end of the exhaust pipe, and the sealing mechanism is arranged at the connecting position of the clearing block pipe and the exhaust pipe.

[0021] Secondly, the utility model discloses a dust cleaning device for exhaust pipe, which comprises an exhaust pipe, a clearing block pipe and a sealing mechanism, wherein the exhaust pipe is provided with an air inlet pipe on the side wall, the clearing block pipe is connected to one end of the exhaust pipe, and the sealing mechanism is arranged at the connecting position of the clearing block pipe and the exhaust pipe.

[0022] Thirdly, the utility model discloses a dust cleaning device for exhaust pipe, which comprises an exhaust pipe, a clearing block pipe and a sealing mechanism, wherein the exhaust pipe is provided with an air inlet pipe on the side wall, the clearing block pipe is connected to one end of the exhaust pipe, and the sealing mechanism is arranged at the connecting position of the clearing block pipe and the exhaust pipe. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] Figure 1 is a structural schematic diagram of the overall appearance of the present application;

[0025] Figure 2 is a structural schematic diagram of the internal structure of the pipe clearing device in the present application;

[0026] Figure 3 is a structural schematic diagram of the locking buckle in the present application;

[0027] Figure 4 is a structural schematic diagram of the first end surface ratchet region in the present application; Figure 3 is a structural schematic diagram of the locking buckle region in the present application;

[0028] Figure 5 is a structural schematic diagram of the sealing mechanism in the present application;

[0029] Figure 6 is a structural schematic diagram of the first end surface ratchet region in the present application; Figure 1

[0030] is a structural schematic diagram of the first end surface ratchet region in the present application; Figure 7 Figure 2 is a structural schematic diagram of the first end surface ratchet and the second end surface ratchet in the present application.

[0031] Figure 8 The following is the explanation of the reference signs: 1, exhaust pipe; 2, air inlet pipe; 3, sealing mechanism; 31, disc; 32, connecting disc; 321, annular groove; 322, sealing ring; 323, spring; 4, connecting mechanism; 41, hinged rod; 42, locking buckle; 43, guide column; 44, rotating ring; 45, arc-shaped groove; 46, first end surface ratchet; 47, second end surface ratchet; 471, key groove; 472, connecting key; 473, push block; 48, external thread; 49, threaded sleeve; 5, pipe clearing device; 51, rotary whistle sound generator; 52, end cover; 53, air supply pipe; 54, check valve; 55, pressure relief valve. DETAILED DESCRIPTION

[0032]

[0033] ​​In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0034] Referring to Figure 1 - Figure 8 As shown in the utility model provides a kind of tubular flow dust containing ventilation exhaust mechanism, including exhaust pipe 1, the side wall of exhaust pipe 1 is fixedly connected with air inlet pipe 2 for accessing dust containing gas, one end of exhaust pipe 1 is fixedly connected with clearing pipe 5, for cleaning dust adhered to the inner wall of exhaust pipe 1, the connecting place of exhaust pipe 1 and clearing pipe 5 is provided with sealing mechanism 3, for improving the air tightness of the connecting place of exhaust pipe 1 and clearing pipe 5, the connecting place of exhaust pipe 1 and clearing pipe 5 is provided with connecting mechanism 4, for the connection of exhaust pipe 1 and clearing pipe 5, the inner wall of clearing pipe 5 is fixedly connected with siren type sound generator 51, for generating high-speed flow and vibrating airflow, and injecting into the inside of exhaust pipe 1, one end of clearing pipe 5 away from exhaust pipe 1 is fixedly connected with end cover 52, air supply pipe 53 connected on siren type sound generator 51 extends to the outside of clearing pipe 5 through end cover 52, for connecting gas source, the gas of gas source should adopt inert gas, air supply pipe 53 is provided with check valve 54, for preventing gas backflow, air supply pipe 53 is provided with pressure relief valve 55, for the pressure relief of air supply pipe 53, by the air inlet pipe 2 arranged on the side wall of exhaust pipe 1 accesses dust containing gas, gas is discharged from exhaust pipe 1, by connecting clearing pipe 5 on one end of exhaust pipe 1, by setting siren type sound generator 51 in the inside of clearing pipe 5, by siren type sound generator 51 connecting gas source through air supply pipe 53, compressed air in gas source passes through siren type sound generator 51, under the action of siren type sound generator 51, high-speed flow and vibration, this vibration spreads out in the form of sound wave through gas medium, and its frequency range is generally between tens of hertz to thousands of hertz, sound wave makes soot particles vibrate in the process of propagation, since the binding force between soot particles and between soot and heated surface is relatively weak, under the action of sound wave, these binding forces are destroyed, soot particles will fall off from the inner wall of exhaust pipe 1, so as to achieve the purpose of soot cleaning, and if inert gas is used to connect air supply pipe 53 with gas source, when processing flammable and explosive gas such as silane, through the action of sound wave vibration, reduce the adhesion amount of dust on pipe wall, or strip the dust adhered on pipe wall, carry away by fluid in exhaust pipe 1, reduce the risk of pipeline blockage and the frequency of maintenance, improve the safety of pipeline.

[0035] In the embodiment, please refer to Figure 3 、 Figure 5The sealing mechanism 3 comprises a disc 31 fixedly connected to one end of the exhaust pipe 1, and the clearing pipe 5 is fixedly connected with a connecting disc 32 corresponding to one end of the disc 31, and the connecting disc 32 is fixedly connected with the disc 31, and the side of the connecting disc 32 corresponding to the disc 31 is provided with an annular groove 321, and the inner wall of the annular groove 321 is slidably connected with a sealing ring 322, and the position between the sealing ring 322 and the inner wall of the annular groove 321 is connected with a spring 323, and the disc 31 is provided with a groove for embedding the sealing ring 322 corresponding to the position of the sealing ring 322. By arranging the sealing mechanism 3 at the connecting position of the clearing pipe 5 and the exhaust pipe 1, the sealing performance of the whole pipeline can be improved, and the safety hazard of gas leakage can be avoided. The large contact area of the disc 31 and the connecting disc 32 can improve the sealing performance of the connecting position of the clearing pipe 5 and the exhaust pipe 1, and the sealing ring 322 is arranged in the annular groove 321 of the connecting disc 32 and supported by the spring 323, so that when the disc 31 is in contact with the connecting disc 32, the sealing ring 322 is always in contact with the disc 31 under the tension of the spring 323, thereby further improving the sealing performance to avoid the situation that the sealing ring 322 is not tightly contacted due to wear after repeated disassembly.

[0036] Further, please refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 The connecting mechanism 4 comprises a plurality of hinged rods 41 hingedly connected to the side of the connecting disc 32 away from the disc 31 and extending to the outside of the connecting disc 32. The hinged rods 41 are fixedly connected with locking buckles 42 at the position away from the connecting disc 32, which are used to clamp the disc 31, and the surface of the disc 31 is provided with a groove for embedding the locking buckle 42. The outer wall of the clearing pipe 5 is axially rotatable with a rotating ring 44, and the inner wall of the rotating ring 44 is provided with an arc-shaped groove 45 corresponding to the position of the hinged rod 41. The inner wall of the arc-shaped groove 45 is slidably connected with a guide column 43, and the guide column 43 is fixedly connected with the hinged rod 41 at the corresponding position. When the clearing pipe 5 is installed, the connecting disc 32 is tightly contacted with the disc 31, and the rotating ring 44 is rotated, the hinged rod 41 connected with the guide column 43 is rotated through the arc-shaped groove 45 on the rotating ring 44, and the locking buckle 42 connected with the hinged rod 41 is embedded in the groove on the surface of the disc 31, so that the disc 31 and the connecting disc 32 are tightly contacted.

[0037] Further, please refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8The first end face ratchet wheel 46 is fixedly connected with the side of the rotary ring 44 away from the connecting disc 32, and the end face of the first end face ratchet wheel 46 is provided with a second end face ratchet wheel 47 matched with each other. The inner wall of the second end face ratchet wheel 47 is fixedly connected with a connecting key 472. The outer wall of the clear block pipe 5 is provided with a key groove 471 corresponding to the position of the connecting key 472, which is used for sliding the connecting key 472. The side of the second end face ratchet wheel 47 away from the connecting disc 32 is fixedly connected with a push block 473. The outer wall of the clear block pipe 5 is threadedly connected with a threaded sleeve 49 through an external thread 48, and the end face of the external thread 48 abuts against the push block 473. After the locking buckle 42 is embedded in the groove on the surface of the disc 31, the threaded sleeve 49 is moved on the external thread 48 of the clear block pipe 5 by twisting the threaded sleeve 49, and the push block 473 is pushed to connect the second end face ratchet wheel 47 to block the first end face ratchet wheel 46 on the rotary ring 44, so as to facilitate the rotary ring 44, and the stability of the overall structure is improved by the cooperative limiting mode.

[0038] Working principle

[0039] In use, the sealing mechanism 3 is arranged at the connection between the clearing pipe 5 and the exhaust pipe 1, so that the sealing performance of the whole pipeline is improved, and the safety hazard of gas leakage is avoided. The large contact area between the disc 31 and the connecting disc 32 improves the sealing performance of the connection between the clearing pipe 5 and the exhaust pipe 1. The sealing ring 322 is arranged in the annular groove 321 of the connecting disc 32 and is supported by the spring 323, so that when the disc 31 is in contact with the connecting disc 32, the sealing ring 322 is always in close contact with the disc 31 under the tension of the spring 323, thereby further improving the sealing performance. After the sealing ring 322 is repeatedly disassembled, the sealing ring 322 is worn and cannot be tightly contacted. When the clearing pipe 5 is installed, the connecting disc 32 is tightly contacted with the disc 31, and the rotating ring 44 is rotated, the hinge rod 41 connected with the guide column 43 is rotated through the arc-shaped groove 45 on the rotating ring 44, the locking buckle 42 connected with the hinge rod 41 is embedded in the groove on the surface of the disc 31, so that the disc 31 and the connecting disc 32 are tightly contacted. After the locking buckle 42 is embedded in the groove on the surface of the disc 31, the threaded sleeve 49 is moved on the external thread 48 of the clearing pipe 5 by screwing the threaded sleeve 49, and the second end surface ratchet 47 connected with the push block 473 is clamped on the first end surface ratchet 46 on the rotating ring 44, so that the rotating ring 44 is convenient to cooperate with the limiting mode, thereby improving the stability of the whole structure. The large contact area between the disc 31 and the connecting disc 32 improves the sealing performance of the connection between the clearing pipe 5 and the exhaust pipe 1. The sealing ring 322 is arranged in the annular groove 321 of the connecting disc 32 and is supported by the spring 323, so that when the disc 31 is in contact with the connecting disc 32, the sealing ring 322 is always in close contact with the disc 31 under the tension of the spring 323, thereby further improving the sealing performance. The gas containing dust is connected to the inlet pipe 2 arranged on the side wall of the exhaust pipe 1, and the gas is discharged from the exhaust pipe 1. The clearing pipe 5 is connected to one end of the exhaust pipe 1. The rotating whistle type sound generator 51 is arranged in the clearing pipe 5. The rotating whistle type sound generator 51 is connected to the gas source through the gas supply pipe 53. The compressed air in the gas source flows at high speed and vibrates under the action of the rotating whistle type sound generator 51. The vibration is transmitted in the form of sound waves through the gas medium. The frequency range is generally between several tens of hertz and several thousand hertz. The sound waves make the soot particles vibrate in the propagation process. Because the binding force between the soot particles and the heated surface is relatively weak, the binding force is destroyed under the action of the sound waves, and the soot particles fall off from the inner wall of the exhaust pipe 1, thereby achieving the purpose of soot removal.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A ducted flow dust extraction ventilation mechanism, characterised in that, The utility model provides exhaust pipe (1), the side wall fixed connection of exhaust pipe (1) has the air inlet pipe (2) for accessing dust-containing gas, one end of exhaust pipe (1) is fixedly connected with the pipe (5) for cleaning dust adhered to the inner wall of exhaust pipe (1) is blocked, The connecting portion of the exhaust pipe (1) and the pipe (5) is provided with a sealing mechanism (3) for improving the air tightness of the connecting portion of the exhaust pipe (1) and the pipe (5). The connecting portion of the exhaust pipe (1) and the pipe (5) is provided with a connecting mechanism (4) for connecting the exhaust pipe (1) and the pipe (5). The inner wall of the pipe (5) is fixedly connected with a rotary whistle sound generator (51) for generating high-speed flow and vibrating airflow and injecting into the inside of the exhaust pipe (1).

2. A ducted flow dust extraction ventilation mechanism according to claim 1, wherein: One end of the pipe (5) away from the exhaust pipe (1) is fixedly connected with an end cover (52), and a gas supply pipe (53) connected to the rotary whistle sound generator (51) extends through the end cover (52) to the outside of the pipe (5) for connecting a gas source, and the gas of the gas source should be inert gas.

3. A ducted flow dust extraction ventilation mechanism according to claim 2, wherein: The gas supply pipe (53) is provided with a check valve (54) for preventing gas backflow, and a pressure relief valve (55) is arranged on the gas supply pipe (53) for pressure relief of the gas supply pipe (53).

4. A ducted flow dust extraction ventilation mechanism according to claim 1, wherein: The sealing mechanism (3) includes a disc (31) fixedly connected to one end of the exhaust pipe (1), and the pipe (5) is fixedly connected with a connecting disc (32) corresponding to one end of the disc (31), and the connecting disc (32) is fixedly connected with the disc (31).

5. A ducted flow dust extraction ventilation mechanism according to claim 4, wherein: One side of the connecting disc (32) corresponding to the disc (31) is provided with an annular groove (321), the inner wall of the annular groove (321) is slidably connected with a sealing ring (322), and the position between the sealing ring (322) and the inner wall of the annular groove (321) is connected with a spring (323), and the position corresponding to the sealing ring (322) on the disc (31) is provided with a groove for embedding the sealing ring (322).

6. A ducted flow dust extraction ventilation mechanism according to claim 1, wherein: The connecting mechanism (4) includes a plurality of hinged rods (41), and the plurality of hinged rods (41) are hinged to one side of the connecting disc (32) away from the disc (31) and extend to the outside of the connecting disc (32), the hinged rods (41) are fixedly connected with locking buckles (42) at positions away from the connecting disc (32) of the disc (31) for clamping the disc (31), and the surface of the disc (31) is provided with a groove for embedding the locking buckle (42).

7. A ducted flow dust extraction ventilation mechanism according to claim 6, wherein: The outer wall of the pipe (5) is axially rotated with a rotating ring (44), the inner wall of the rotating ring (44) is provided with an arc-shaped groove (45) corresponding to the position of the hinged rod (41), and the inner wall of the arc-shaped groove (45) is slidably connected with a guide column (43), and the guide column (43) is fixedly connected with the hinged rod (41) at the corresponding position.

8. A ducted flow dust extraction ventilation mechanism according to claim 7, wherein: The first end face ratchet (46) is fixedly connected with the swivel (44) away from one side of the connecting disc (32), the end face of the first end face ratchet (46) is provided with a second end face ratchet (47) matched with each other, the inner wall of the second end face ratchet (47) is fixedly connected with a connecting key (472), and the outer wall of the pipe (5) is provided with a key groove (471) for sliding of the connecting key (472) at the position corresponding to the connecting key (472).

9. A ducted flow dust extraction ventilation mechanism according to claim 8, wherein: The second end face ratchet (47) is fixedly connected with a push block (473) away from one side of the connecting disc (32), the outer wall of the pipe (5) is screw-connected with a threaded sleeve (49) through an outer thread (48), and the end face of the outer thread (48) abuts against the push block (473).

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