Sound wave soot blower

Abstract

The utility model discloses a sound wave soot blower which comprises a sound wave generator and a trumpet-shaped sound wave guide pipe connected with the sound wave generator, and further comprises an opening and closing mechanism arranged at a pipe opening of the sound wave guide pipe and used for opening or closing the pipe opening of the sound wave guide pipe. The opening and closing mechanism comprises a mounting cover, a plurality of opening and closing blades, an annular guide rail and a driving assembly; according to the sound wave soot blower, the connecting rods drive the opening and closing blades to rotate around the first hinge shafts hinged to the opening and closing blades, when the sound wave soot blower does not work, the opening and closing blades can be used for sealing the pipe opening of the sound wave guide pipe, and therefore fly ash is prevented from entering the sound wave guide pipe, and the service life of the sound wave soot blower is prolonged. Due to the fact that the opening and closing processes of the multiple opening and closing blades are located on the same vertical plane, compared with a traditional outward-turning rotary type sealing structure, limitation on the distance between the sound wave guiding pipe and the boiler is small, extra turning space does not need to be reserved, and therefore the distance between the sound wave guiding pipe and the boiler can be adjusted according to the soot blowing requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler soot blowing technical field, specifically is a kind of acoustic soot blower. BACKGROUND

[0002] At present, dust is inevitably generated in the working process of boiler, and if the dust adheres to the inner wall of the boiler, the thermal efficiency of the heating surface of the boiler will be reduced, which will lead to the increase of internal pollution gas. In order to deal with this situation, the acoustic soot blower emerges as the times require. Its working principle is to convert compressed air into high-power sound waves and send it into the furnace, so that the accumulated ash in the boiler is subjected to the repeated pulling and pressing action of the density wave alternately changed at a certain frequency, and the accumulated ash is detached due to fatigue and carried away by the flue gas flow.

[0003] The acoustic soot blower is usually composed of a sound wave generator and a horn-shaped sound wave guide tube connected with the sound wave generator. The horn-shaped sound wave guide tube can effectively concentrate and amplify sound wave energy, ensuring that the sound wave can reach the target area with high intensity and efficiency. However, when the acoustic soot blower is not working, the horn-shaped sound wave guide tube will form a vortex, causing the floating fly ash to flow back into the sound wave guide tube. As the amount of accumulated fly ash increases, it will affect the stable and reliable operation of the acoustic soot blower. Therefore, it is necessary to prevent fly ash from flowing back.

[0004] To solve the problem of accumulated ash caused by fly ash flowing back into the sound wave guide tube, the existing technology uses a sealing cover structure to cover the mouth of the horn-shaped sound wave guide tube when the acoustic soot blower is not working, preventing fly ash from entering the sound wave guide tube. Considering that the inside-out sealing cover structure will hinder the internal cavity of the horn-shaped sound wave guide tube, which will easily affect the propagation of sound waves, therefore, these sealing cover structures are usually outside-out, and when the acoustic soot blower is working, the sealing cover structure is turned outward and opened. However, when the sound wave generator is blowing ash in the boiler, in order to ensure the blowing effect, the mouth of the sound wave guide tube is usually close to the boiler wall. For the outside-out sealing cover structure, the distance between the mouth of the sound wave guide tube and the boiler wall must be greater than the rotating range of the sealing cover to be opened, therefore, there is a certain requirement for the distance between the sound wave guide tube and the boiler wall, which will cause the problem of poor blowing effect. For example, the patent with publication number CN217685076U discloses a kind of acoustic soot blower anti-ash sound pipe, which uses a reel to wind steel wire rope to control the opening and closing process of the cover plate, to prevent smoke from flowing back when the acoustic soot blower is not working. However, the cover plate needs to have a certain space to realize opening and closing, so it is difficult to blow ash close to the boiler effectively. For example, the patent with publication number CN216244345U discloses a kind of acoustic soot blower with anti-blocking function, which uses outward rotation to control the opening and closing of the mesh cover to realize the sealing of the horn pipe part to prevent dust from entering. Similarly, there is a certain distance limitation for the arrangement distance of the mesh cover rotation, which cannot blow ash close to the boiler.

[0005] In summary, the prior art acoustic soot blower in the process of sealing the acoustic guide tube with the outward opening type sealing structure when not working has the problem of limited installation distance. Practical new type content

[0006] The utility model discloses an acoustic soot blower, to solve the current acoustic soot blower when not working, outward opening type sealing structure seals acoustic guide tube and has the problem of limited installation distance.

[0007] The utility model discloses a technical scheme:

[0008] An acoustic soot blower, comprising a sound wave generator and a horn-shaped sound wave guide tube connected with the sound wave generator, further comprising an opening and closing mechanism arranged at the pipe opening of the sound wave guide tube for opening or closing the pipe opening of the sound wave guide tube, the opening and closing mechanism comprising a mounting cover, a plurality of opening and closing blades, an annular guide rail and a driving assembly; the mounting cover is sleeved and fixed on the outer wall of the pipe opening of the sound wave guide tube, a through hole for transmitting sound waves is formed through the side wall of the mounting cover opposite to the sound wave guide tube, and a cylindrical mounting cavity is arranged in the mounting cover; the plurality of opening and closing blades are arranged in the cylindrical mounting cavity and are uniformly arranged around the center of the through hole, a plurality of first hinge shafts are fixed in the cylindrical mounting cavity, and each opening and closing blade is hingedly connected with each first hinge shaft; the annular guide rail is rotationally connected in the cylindrical mounting cavity, a plurality of connecting rods are uniformly arranged around the inner side of the annular guide rail, one end of each connecting rod is hingedly connected with the inner wall of the annular guide rail, and the other end of each connecting rod is hingedly connected with each opening and closing blade; the driving assembly is connected with the annular guide rail and is used for driving the annular guide rail to rotate, a plurality of connecting rods are used for driving a plurality of opening and closing blades to rotate around the respective first hinge shafts, and the opening and closing process of the plurality of opening and closing blades is realized.

[0009] Preferably, as a further improvement of the utility model, the driving assembly comprises a driving motor and a gear; the driving motor is fixed at the bottom of the mounting cover; the gear is sleeved and fixed on the output shaft of the driving motor, a through groove is formed in the side wall of the mounting cover opposite to the gear, the through groove is in communication with the cylindrical mounting cavity, an arc-shaped groove is formed in the circumferential side wall of the annular guide rail close to the through groove, a plurality of meshing teeth are uniformly arranged along the arc-shaped surface of the arc-shaped groove, and one side of the gear extends into the arc-shaped groove and is in meshing connection with the meshing teeth.

[0010] Preferably, as a further improvement of the utility model, the driving assembly is a lever, an arc-shaped notch is formed in the bottom of the mounting cover, the arc-shaped notch is in communication with the cylindrical mounting cavity, one end of the lever extends into the arc-shaped notch and is fixed to the outer ring surface of the annular guide rail.

[0011] Preferably, as a further improvement of the utility model, the two ends of the arc-shaped notch are provided with locking assemblies, which are used for locking the rotating position of the lever.

[0012] Preferably, as a further improvement of the utility model, the locking assembly comprises two magnets, which are respectively fixed at the two ends of the arc-shaped notch, and the material of the lever is composed of magnetic material that can be attracted by the magnets.

[0013] Preferably, as a further improvement of the utility model, an adjusting support is arranged between the sound wave guide pipe and the mounting cover, which is used for adjusting the horizontal distance between the mounting cover and the pipe opening of the sound wave guide pipe, and the adjusting support comprises a fastener and a horizontal moving mechanism; the fastener is fixed on the outer wall of the sound wave guide pipe; the horizontal moving mechanism is connected to the fastener, and the output end of the horizontal moving mechanism is connected to the side wall of the mounting cover.

[0014] Preferably, as a further improvement of the utility model, the fastener is a clamp.

[0015] Preferably, as a further improvement of the utility model, the horizontal moving mechanism comprises two groups of horizontal moving assemblies arranged at the upper and lower ends of the clamp, and each horizontal moving assembly comprises a support, a lead screw and an internally threaded sleeve; the support is vertically fixed at the end of the clamp, and a horizontal through hole is formed in the support; the lead screw is arranged in the through hole, and one end of the lead screw is fixed to the side wall of the mounting cover; the internally threaded sleeve is rotatably connected to the side wall of the support and coaxially arranged with the through hole, and the other end of the lead screw is arranged in the internally threaded sleeve and threadedly connected to the internally threaded sleeve.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] The opening and closing mechanism is composed of the mounting cover, the plurality of opening and closing blades, the annular guide rail and the driving assembly, the annular guide rail is driven to rotate by the driving assembly, the plurality of opening and closing blades are driven to rotate around the respective first hinge shafts by the plurality of connecting rods, and the opening and closing process of the plurality of opening and closing blades is realized, so that the pipe opening of the sound wave guide pipe can be closed by the plurality of opening and closing blades when the sound wave blower is not working, the flying ash is prevented from entering the sound wave guide pipe, the distance between the sound wave guide pipe and the boiler is less limited compared with the traditional out-to-in rotating closing structure, no additional rotating space is needed, the distance between the sound wave guide pipe and the boiler can be adjusted according to the blowing requirement, the sound wave guide pipe can be close to the boiler, and good blowing effect is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1The utility model discloses a main view structural schematic drawing of acoustic wave soot blower.

[0019] Figure 2 The utility model discloses a main view structural schematic drawing of acoustic wave soot blower's open and close mechanism's section structure.

[0020] Figure 3 The utility model discloses a main view structural schematic drawing of acoustic wave soot blower's drive assembly's one optimization scheme structure.

[0021] Figure 4 The utility model discloses Figure 3 A place local amplification schematic drawing in the utility model.

[0022] Figure 5 The utility model discloses a main view structural schematic drawing of acoustic wave soot blower's in horizontal movement mechanism's in first movement position.

[0023] Figure 6 The utility model discloses a main view structural schematic drawing of acoustic wave soot blower's in horizontal movement mechanism's in second movement position. Specific implementation

[0024] The utility model discloses a main view structural schematic drawing of acoustic wave soot blower's in horizontal movement mechanism's in second movement position. Figure 1 to the drawings Figure 6 , the specific implementation of the utility model is described in detail. In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it can not be understood as a limitation on the utility model.

[0025] The terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] Embodiment

[0027] As Figures 1 to 4The utility model discloses an acoustic wave soot blower, including acoustic generator 1 and with acoustic generator 1 is connected the acoustic wave guide pipe 2 of horn shape, still including open and close mechanism, set up at the pipe orifice of acoustic wave guide pipe 2, for opening or closing the pipe orifice of acoustic wave guide pipe 2, open and close mechanism includes mounting cover 3, a plurality of open and close blades 4, annular guide rail 5 and drive assembly, mounting cover 3 is set fixed on the outer wall at the pipe orifice of acoustic wave guide pipe 2, mounting cover 3 is opposite the side wall of acoustic wave guide pipe 2 and is passed through and is set with the through -hole 31 for making the sound wave export on, and mounting cover 3 is equipped with cylindrical mounting cavity 32 in the inside, a plurality of open and close blades 4 are arranged in cylindrical mounting cavity 32, and are evenly distributed and surround the center of through -hole 31 and set, a plurality of first hinged shafts 41 are fixed in cylindrical mounting cavity 32, and every open and close blade 4 is respectively corresponding with every first hinged shaft 41 articulates, annular guide rail 5 is rotatably connected in cylindrical mounting cavity 32, and the inside of annular guide rail 5 evenly distributed and surround is equipped with a plurality of connecting rods 51, and one end of every connecting rod 51 is articulated with the inner wall of annular guide rail 5, and the other end of every connecting rod 51 is corresponding with every open and close blade 4 articulates, drive assembly is connected with annular guide rail 5, for driving annular guide rail 5 autorotation, utilizes a plurality of connecting rods 51 to drive a plurality of open and close blades 4 and rotates around the first hinged shaft 41 of respective articulation, realizes the opening and closing process of a plurality of open and close blades 4.

[0028] In the embodiment, the open and close mechanism can close the pipe orifice of the acoustic wave guide pipe 2 when the acoustic wave soot blower is not working, thereby avoiding fly ash from entering the acoustic wave guide pipe 2.

[0029] The open and close mechanism is an iris type open and close mechanism, the number of the open and close blades 4 is five, and the outer contour shape of the open and close blades 4 is similar to a petal shape.

[0030] Specifically, as shown in Figure 2As shown in the figure, as an optional embodiment of the driving assembly, the driving assembly in the embodiment includes a driving motor and a gear 61; the driving motor is fixed on the bottom of the mounting cover 3; the gear 61 is sleeved and fixed on the output shaft of the driving motor, a through groove 33 is formed on the side wall of the mounting cover 3 opposite to the gear, the through groove 33 is communicated with the cylindrical mounting cavity 32, an arc-shaped groove 52 is formed on the circumferential side wall of the annular guide rail 5 close to the through groove 33, a plurality of meshing teeth 53 are uniformly arranged on the arc-shaped surface of the arc-shaped groove 52, and one side of the gear 61 extends into the arc-shaped groove 52 and meshes with the meshing teeth 53.

[0031] In the embodiment, by controlling the forward and reverse rotation of the driving motor control gear 61, the annular guide rail 5 can be driven to rotate clockwise or counterclockwise by the meshing relationship between the gear 61 and the meshing teeth 53, and then the plurality of connecting rods 51 can be driven to rotate the plurality of opening and closing blades 4 around the respective first hinge shafts 41 by the rotation of the annular guide rail 5, so as to realize the opening and closing process of the plurality of opening and closing blades 4.

[0032] Specifically, as shown in Figure 3 and Figure 4 As an optional embodiment of the driving assembly, the driving assembly in the embodiment is a lever 7, an arc-shaped groove 34 is formed on the bottom of the mounting cover 3, the arc-shaped groove 34 is communicated with the cylindrical mounting cavity 32, and one end of the lever 7 extends into the arc-shaped groove 34 and is fixed to the outer ring surface of the annular guide rail 5.

[0033] In the embodiment, the rotation direction of the lever 7 is controlled to drive the annular guide rail 5 to rotate clockwise or counterclockwise, when the lever 7 rotates clockwise, the plurality of opening and closing blades 4 are driven to rotate to open the through hole 31, when the lever 7 rotates counterclockwise, the plurality of opening and closing blades 4 are driven to rotate to close the through hole 31, compared with the mode of opening and closing by controlling the rotation of the driving motor control gear 61, the mode can be used without power, saving energy, and not easy to damage.

[0034] Further, in the mode of opening and closing the plurality of opening and closing blades 4 by rotating the lever 7, considering that the acoustic soot blower needs to ensure that the plurality of opening and closing blades 4 are completely opened when working, so that the sound wave is emitted through the through hole 31, and once the opening and closing blades 4 are not completely opened, the transmission of the sound wave will be blocked, and at the same time, the acoustic soot blower needs to ensure that the plurality of opening and closing blades 4 are in a completely closed state when not working, so as to avoid fly ash from entering the acoustic guide pipe 2, therefore, the position of the lever 7 needs to be positioned to ensure that the plurality of opening and closing blades 4 are always in a completely opened state when the acoustic soot blower works, and the plurality of opening and closing blades 4 are always in a completely closed state when the acoustic soot blower does not work, therefore, a locking assembly is arranged at the two ends of the arc-shaped groove 34, and the locking assembly is used to lock the position of the rotation of the lever 7.

[0035] Specifically, asFigure 4 As shown, the locking assembly comprises two magnets 8 fixed at the two ends of the arc-shaped notch 34 respectively, the material of the lever 7 is composed of magnetic material which can be attracted by the magnets 8, the two magnets 8 can magnetically attract and position the two limit positions of the rotation of the lever 7, so as to avoid the deviation of the opening and closing process of the plurality of opening and closing blades 4 caused by external shaking and other factors during the working process.

[0036] In another embodiment of the present application, as shown in Figure 5 and Figure 6 , considering that when the sound wave is transmitted through the sound wave guide pipe 2, the sound wave guide pipe 2 is blocked by the mounting cover 3 which is covered outside the sound wave guide pipe 2, an adjusting bracket is arranged between the sound wave guide pipe 2 and the mounting cover 3, the adjusting bracket is used for adjusting the horizontal distance between the mounting cover 3 and the pipe opening of the sound wave guide pipe 2, and the adjusting bracket comprises a fastener 91 and a horizontal moving mechanism; the fastener 91 is fixed on the outer wall of the sound wave guide pipe 2; the horizontal moving mechanism is connected to the fastener 91, and the output end of the horizontal moving mechanism is connected to the side wall of the mounting cover 3.

[0037] As shown in Figure 5 , when the sound wave soot blower works to blow soot, the plurality of opening and closing blades in the opening and closing mechanism are in a fully open state, the horizontal position of the mounting cover 3 is adjusted by the horizontal moving mechanism, so that the pipe opening of the sound wave guide pipe 2 blows soot through the through hole 31, so that the outside of the pipe opening of the sound wave guide pipe 2 is not blocked, and the transmission of the sound wave is not affected, as shown in Figure 6 , when the sound wave soot blower does not work, the horizontal position of the mounting cover 3 is adjusted by the horizontal moving mechanism, so that the pipe opening of the sound wave guide pipe 2 is retracted into the through hole 31, and at this time, the plurality of opening and closing blades 4 are closed by the opening and closing mechanism, so that the pipe opening of the sound wave guide pipe 2 is closed, and the flying ash is prevented from entering

[0038] Specifically, as shown in Figure 5 , the fastener 91 is a clamp, which is fixed on the outer wall of the sound wave guide pipe 2 in the form of clamping.

[0039] Specifically, as shown in Figure 5 and Figure 6 , the horizontal moving mechanism comprises two groups of horizontal moving assemblies arranged at the upper and lower ends of the clamp, and the horizontal moving assembly comprises a bracket 92, a lead screw 93 and an internally threaded sleeve 94; the bracket 92 is vertically fixed at the end of the clamp, and a horizontal through hole is formed in the bracket 92; the lead screw 93 is arranged in the through hole, and one end of the lead screw 93 is fixed to the side wall of the mounting cover 3; the internally threaded sleeve 94 is rotatably connected to the side wall of the bracket 92 and coaxially arranged with the through hole, and the other end of the lead screw 93 is arranged in the internally threaded sleeve 94 and threadedly connected with the internally threaded sleeve 94.

[0040] In this embodiment, when the horizontal position of the mounting cover 3 is adjusted by the horizontal moving mechanism, the inner threaded sleeve 94 is rotated, and since the lead screw 93 is connected with the inner threaded sleeve 94, it is equivalent to the lead screw nut transmission, so that the rotary motion can be converted into linear motion, thereby driving the lead screw 93 to translate, and further driving the mounting cover 3 to move horizontally.

[0041] The above disclosed are only several preferred specific embodiments of the present application, but the embodiments of the present application are not limited to this, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. An acoustic soot blower comprising an acoustic generator (1) and a horn-shaped acoustic guide tube (2) connected to the acoustic generator (1), characterized in that Further comprising an opening and closing mechanism arranged at the pipe opening of the sound wave guide pipe (2) for opening or closing the pipe opening of the sound wave guide pipe (2), the opening and closing mechanism comprising: a mounting cover (3) sleeved and fixed on the outer wall of the pipe opening of the sound wave guide pipe (2), the mounting cover (3) being opposite to the side wall of the sound wave guide pipe (2) and having a through hole (31) for transmitting sound waves arranged through the side wall, and the mounting cover (3) having a cylindrical mounting cavity (32) arranged inside; a plurality of opening and closing blades (4) arranged in the cylindrical mounting cavity (32) and uniformly arranged around the center of the through hole (31), and a plurality of first hinge shafts (41) being fixed in the cylindrical mounting cavity (32), each opening and closing blade (4) being hingedly connected to each first hinge shaft (41); a ring-shaped guide rail (5) rotatably connected in the cylindrical mounting cavity (32), the inner side of the ring-shaped guide rail (5) uniformly and circularly having a plurality of connecting rods (51), one end of each connecting rod (51) being hingedly connected to the inner wall of the ring-shaped guide rail (5), and the other end of each connecting rod (51) being hingedly connected to each opening and closing blade (4); a driving assembly connected to the ring-shaped guide rail (5) for driving the ring-shaped guide rail (5) to rotate, and the plurality of connecting rods (51) driving the plurality of opening and closing blades (4) to rotate around the respective first hinge shafts (41) to realize the opening and closing process of the plurality of opening and closing blades (4).

2. The acoustic soot blower of claim 1, wherein, The driving assembly comprises: a driving motor fixed at the bottom of the mounting cover (3); a gear (61) sleeved and fixed on the output shaft of the driving motor, the mounting cover (3) having a through slot (33) arranged through the side wall opposite to the gear, the through slot (33) being in communication with the cylindrical mounting cavity (32), the circumferential side wall of the ring-shaped guide rail (5) near the through slot (33) having an arc-shaped slot (52) arranged through the circumferential side wall, the arc-shaped slot (52) having a plurality of meshing teeth (53) uniformly arranged along the arc-shaped surface, and one side of the gear (61) extending into the arc-shaped slot (52) and being in meshing connection with the meshing teeth (53).

3. The acoustic soot blower of claim 1, wherein, The driving assembly is a lever (7), the bottom of the mounting cover (3) has an arc-shaped slot (34) arranged through the bottom, the arc-shaped slot (34) being in communication with the cylindrical mounting cavity (32), and one end of the lever (7) extending into the arc-shaped slot (34) and being fixed to the outer ring surface of the ring-shaped guide rail (5).

4. The acoustic soot blower of claim 3, wherein, The arc-shaped slot (34) has a locking assembly arranged at both ends of the arc-shaped slot (34), and the locking assembly is used for locking the rotating position of the lever (7).

5. The acoustic sootblower of claim 4, wherein, The locking assembly comprises two magnets (8) fixed at both ends of the arc-shaped slot (34), and the material of the lever (7) is composed of a magnetic material that can be attracted by the magnets (8).

6. The acoustic soot blower of any one of claims 1-5, wherein, An adjusting support is arranged between the sound wave guide pipe (2) and the mounting cover (3), and the adjusting support is used for adjusting the horizontal distance between the mounting cover (3) and the pipe opening of the sound wave guide pipe (2), and the adjusting support comprises: a fastener (91) fixed on the outer wall of the sound wave guide pipe (2); a horizontal moving mechanism connected to the fastener (91), and the output end of the horizontal moving mechanism being connected to the side wall of the mounting cover (3).

7. The acoustic soot blower of claim 6, wherein, The fastener (91) is a clamp.

8. The acoustic sootblower of claim 7, wherein, The horizontal moving mechanism comprises two groups of horizontal moving assemblies oppositely arranged at upper and lower ends of the clamp. A support (92) is vertically fixed at the end of the clamp, and a horizontal through hole is formed in the side wall of the support (92); A screw rod (93) is arranged in the through hole, and one end of the screw rod (93) is fixed to the side wall of the mounting cover (3); An internally-threaded sleeve (94) is rotatably connected to the side wall of the support (92) and coaxially arranged with the through hole, and the other end of the screw rod (93) is arranged in the internally-threaded sleeve (94) and threadedly connected to the internally-threaded sleeve (94).

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