Flue cleaning device for garbage power station

Abstract

The utility model provides a flue cleaning device for a garbage power station, which relates to the technical field of flue ash removal devices and comprises a flue, one end of the flue is communicated with a reaction tower, the other end of the flue is communicated with a bag-type dust remover, the flue is horizontally arranged, a through hole is formed in the middle of the flue, and a manhole door is hinged to the periphery of the through hole of the flue. Round holes are formed in the two sides of the manhole door of the flue, air cannons are arranged at the two round holes and inserted into the flue through the round holes, and the bottom ends of the air cannons are connected with a support assembly, so that the technical problems that in the prior art, manual cleaning is not conducted in time, and accumulated dust and hardened dust at different positions cannot be evenly removed are solved, and the purposes of regular cleaning, time saving and labor saving are achieved. And the service life of the flue is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue ash removal device technical field, especially a garbage power station flue cleaning device. BACKGROUND

[0002] In the industrial production process of garbage incineration treatment, the flue between the reaction tower and the bag-type dust collector is the key part of the whole flue gas treatment system. Its role is to guide the flue gas generated after combustion to smoothly enter the bag-type dust collector from the reaction tower, and to carry out efficient dust removal and purification to meet the environmental protection emission standard and protect the production environment and air quality.

[0003] However, in the actual operation process, the flue faces the following problems: on the one hand, due to the inevitable fluctuation of production load, the combustion condition will also change, and in addition, the complexity of the garbage composition leads to the easy occurrence of ash deposition and hardening in the horizontal flue. This ash deposition and hardening problem can cause uneven flue gas flow rate, making the flow state of the flue gas in the flue disorderly, and unable to be efficiently transmitted to the bag-type dust collector for treatment. On the other hand, ash deposition and hardening can also cause the pressure difference before and after the bag-type dust collector to increase significantly.

[0004] In order to overcome the above problems, the traditional treatment method is to use the periodic manual cleaning method, but manual cleaning consumes a lot of manpower, material resources and time, and it is difficult to ensure uniform removal of ash deposition and hardening at different positions. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a garbage power station flue cleaning device to alleviate the technical problems of manual cleaning, untimely cleaning and inability to uniformly remove ash deposition and hardening at different positions in the prior art.

[0006] The utility model provides a garbage power station flue cleaning device, comprising: a flue, a manhole door, an air cannon and a bracket assembly.

[0007] One end of the flue is communicated with the reaction tower, the other end of the flue is communicated with the bag-type dust collector, the flue is horizontally arranged, a through hole is formed in the middle part of the flue, the manhole door is hinged to the outer periphery of the through hole of the flue, circular holes are formed on both sides of the manhole door of the flue, air cannons are arranged at the two circular holes, the air cannons are inserted into the flue through the circular holes, and the bracket assembly is connected to the bottom end of the air cannon.

[0008] Further, a hinge is fixedly connected to the surface of one side of the flue, and the manhole door is hinged to the flue through the hinge.

[0009] Further, the manhole door is rectangular or circular, and the radial length of the manhole door is 500mm-800mm.

[0010] Further, each air cannon comprises a cannon body, a cannon head, a solenoid valve assembly, an air inlet hose and a pressure relief valve.

[0011] One end of the cannon body is connected with the cannon head through a flange, the other end of the cannon body is connected with the solenoid valve assembly through a flange, the top surface of the cannon body is provided with the pressure relief valve, and the surface of the cannon body is further connected with the air inlet hose.

[0012] Further, the air inlet hose is provided with a ball valve, and the end of the air inlet hose away from the cannon body is communicated with a gas storage tank; the air inlet hose close to the cannon body is further provided with a pressure gauge.

[0013] Further, the cannon head is in a cylindrical shape, and the cannon head is directly inserted into the flue through the round hole.

[0014] Further, the cannon head is in a zigzag shape, and the bending degree of the cannon head is 130°-160°.

[0015] Further, the cannon head is in a horn shape, and the inclination angle of the cannon head is 40°-70°.

[0016] Further, the support assembly comprises a tripod welded with the flue, and a support frame bolted with the top end of the tripod, and the top end of the support frame is in an arc shape to support the cannon body.

[0017] Beneficial effects:

[0018] The garbage power station flue cleaning device comprises a flue, a reaction tower, a bag-type dust collector, a cannon body, a cannon head, a solenoid valve assembly, an air inlet hose, a pressure relief valve, a support assembly and air cannons.

[0019] The flue is horizontally arranged and is connected with the reaction tower and the bag-type dust collector, the middle part of the flue is provided with a through hole, the flue is hinged with a manhole door at the outer periphery of the through hole, the flue is provided with round holes at the two sides of the manhole door, the air cannons are arranged at the two round holes, the air cannons are inserted into the flue through the round holes, and the bottom end of the air cannon is connected with the support assembly. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0021] Figure 1 The structure schematic view of the garbage power station flue cleaning device provided by the embodiment of the present application is shown in the figure.

[0022] Figure 2 The structure schematic view of the opening on the flue of the garbage power station flue cleaning device provided by the embodiment of the present application is shown in the figure.

[0023] Figure 3 The front view of the air cannon in the garbage power station flue cleaning device provided by the embodiment of the present application is shown in the figure.

[0024] Figure 4 The structure schematic view of the air cannon in the garbage power station flue cleaning device provided by the embodiment of the present application is shown in the figure.

[0025] Figure 5 The structure schematic view of the horn-shaped cannon head in the garbage power station flue cleaning device provided by the embodiment of the present application is shown in the figure.

[0026] Figure 6 The dust of the garbage power station flue cleaning device provided by the embodiment of the present application is shown in the figure.

[0027] Figure: 1-flue; 101-through hole; 102-round hole; 2-manhole door; 3-air cannon; 301-cannon body; 302-cannon head; 303-solenoid valve assembly; 304-air inlet hose; 305-pressure relief valve; 306-ball valve; 307-pressure gauge; 4-bracket assembly; 401-tripod; 402-supporting frame. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0030] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] As shown in Figure 1 , Figure 2 The present application provides a garbage power plant flue cleaning device, which comprises a flue 1, a manhole door 2, an air cannon 3 and a support assembly 4.

[0036] One end of the flue 1 is connected to the reaction tower, and the other end of the flue 1 is connected to the bag filter. The flue 1 is horizontally arranged, and a through hole 101 is opened in the middle of the flue 1. A manhole door 2 is hinged to the outer periphery of the through hole 101. Circular holes 102 are opened on both sides of the manhole door 2. Air cannons 3 are arranged at both circular holes 102. The air cannons 3 are inserted into the flue 1 through the circular holes 102. The bottom end of the air cannons 3 is connected to the support assembly 4.

[0037] Specifically, in the flue gas system of a waste-to-energy plant, flue 1, with a rectangular cross-section, connects the reaction tower ( Figure 1 (Rectangle on the left) and bag filter ( Figure 1 Connected to the right side of the rectangular section. The flue 1 must be horizontal and parallel to the ground. From the perspective of flue gas flow, a horizontal configuration allows for a more uniform flow velocity within the flue 1, preventing localized areas of excessively fast or slow flow, thus ensuring the stability and efficiency of the entire flue gas treatment process. Furthermore, in the event of an emergency blockage in the flue 1 or when troubleshooting is required, maintenance personnel can easily enter the flue through the manhole 2 to carry out repairs.

[0038] A rectangular through-hole 101 is provided in the center of flue 1, serving as a passage for maintenance personnel. Manhole 2 is hinged to flue 1 via hinges or other connecting components. Maintenance personnel can open manhole 2 when access to flue 1 is needed; otherwise, it remains closed. Manhole 2 is made of steel plate and has sealing strips installed at its edges. This effectively reduces damage caused by frequent opening and closing, and also reduces the impact on the sealing structure and door frame, extending the service life of both manhole 2 and flue 1. Two air cannons 3 are installed on the left and right sides of flue 1, eliminating the need to enter through the through-hole 101 for cleaning. Previously, traditional manual cleaning required frequent entry into flue 1; now, the air cannons 3 and manhole 2 significantly reduce this frequency.

[0039] Air cannon 3 is inserted into flue 1 through a circular hole 102 to perform spray cleaning. The diameter of the circular hole 102 is the same as the diameter of the end of air cannon 3 to prevent air leakage or smoke leakage. Air cannon 3 can periodically spray high-speed airflow into the flue at set time intervals. The periodic cleaning by air cannon 3 extends the service life of the equipment and effectively ensures the stable operation of the entire incineration power generation flue gas system. Moreover, air cannon 3 replaces manual timed cleaning, which can evenly remove ash and caking from different locations in the flue, making the cleaning work more comprehensive and efficient, and further reducing the frequency of flue maintenance.

[0040] In addition, the size of the barrel body 301 of the air cannon 3 is relatively large, and cannot be directly hung over the flue 1 through the round hole 102. The air cannon 3 needs to be supported by means of the support assembly 4. One end of the support assembly 4 is fixedly connected with the bottom end of the air cannon 3 through bolts, and the other end is welded on the flue 1, so as to ensure the stability of the air cannon 3 on the flue.

[0041] In the embodiment of the utility model, the flue 1 is fixedly connected with a hinge on one side surface of the through hole 101, and the manhole door 2 is hingedly connected with the flue 1 through the hinge.

[0042] The manhole door 2 is in a rectangular or circular shape, and the radial length of the manhole door 2 is 500mm-800mm.

[0043] Specifically, on one side of the through hole 101 of the flue 1, a hinge is fixedly connected, and the manhole door 2 is opened and closed with the flue 1 through the hinge. When the flue 1 needs to be overhauled, the maintenance personnel only need to easily rotate the manhole door 2, so as to quickly enter the flue 1, and the operation is simple and efficient.

[0044] The shape of the manhole door 2 can be rectangular or circular. When it is circular, the radial length, i.e. the diameter, is between 500mm and 800mm; when it is rectangular, the length is also between 500mm and 800mm, and the height is adjusted according to the actual personnel entering and leaving, so that adults can pass through. The range of 500mm-800mm is sufficient for the maintenance personnel to pass through smoothly, and ensures that the maintenance personnel will not be limited when entering the flue due to narrow space.

[0045] In the embodiment of the utility model, as shown in Figure 3 、 Figure 4 each air cannon 3 comprises a barrel body 301, a cannon head 302, an electromagnetic valve assembly 303, an air inlet hose 304 and a pressure relief valve 305;

[0046] One end of the barrel body 301 is connected with the cannon head 302 through a flange, the other end of the barrel body 301 is connected with the electromagnetic valve assembly 303 through a flange, the top end surface of the barrel body 301 is provided with the pressure relief valve 305, and the surface of the barrel body 301 is further connected with the air inlet hose 304.

[0047] The air inlet hose 304 is provided with a ball valve 306, and one end of the air inlet hose 304 away from the barrel body 301 is communicated with a gas storage tank; the air inlet hose 304 close to the barrel body 301 is further provided with a pressure gauge 307.

[0048] Specifically, the two air cannons 3 are structurally identical, and in specific installation, since the cannon body 301 is a middle columnar body with a circular tubular shape at the middle of both ends, and the cannon head 302 is also circular tubular at the end away from the flue 1, the cannon body 301 is connected with the cannon head 302 at one end through two flanges; the connection between the two flanges is achieved by a plurality of bolts to tightly connect the one end of the cannon body 301 and the cannon body 301, prevent air leakage, and ensure the stability of the connection between the two, so that loosening or falling off does not occur during high-speed airflow injection, thereby ensuring the safety and stability of the air cannon 3. The other end of the cannon body 301 is also connected with the electromagnetic valve assembly 303 through two flanges, and the electromagnetic valve assembly 303 includes an electromagnetic valve pipeline and an electromagnetic valve, which controls the injection and realizes the cleaning of the accumulated ash and impurities in the flue 1.

[0049] The top surface of the cannon body 301 is provided with a pressure relief valve 305, which is automatically or manually opened when the internal pressure of the cannon body 301 is too high, to release the excess pressure and avoid damage to the cannon body 301 due to excessive pressure, thereby ensuring the safe operation of the equipment. The surface of the cannon body 301 is also connected with an air inlet hose 304, which is responsible for delivering compressed air to the cannon body 301. A ball valve 306 is provided on the air inlet hose 304, and by controlling the opening degree of the ball valve 306, the gas flow entering the cannon body 301 can be flexibly adjusted to meet the demand for injection intensity of the air cannon 3 under different working conditions. The end of the air inlet hose 304 away from the cannon body 301 is connected with a gas storage tank, which provides a stable source of compressed air for the air cannon 3 to ensure that the air cannon 3 can work continuously and stably. In order to save costs, the air inlet hoses in the two air cannons 3 can be connected to the same gas storage tank.

[0050] A pressure gauge 307 is also provided near the cannon body 301 of the air inlet hose 304, which can monitor the inlet pressure in real time, so that the operator can timely understand the equipment operation state and adjust the opening degree of the ball valve 306 according to the actual situation to control the pressure.

[0051] As an embodiment of the present application, the cannon head 302 is cylindrical (not shown in the drawings), and the cannon head 302 is directly inserted into the flue 1 through the round hole 102.

[0052] Specifically, the cannon head 302 is cylindrical, which is convenient to manufacture and simple to connect, and can be directly inserted into the flue 1 through the round hole 102. The inner diameter and outer diameter of the cylindrical cannon head are matched with the round hole 102 to ensure tight and firm installation. When compressed air is injected into the flue 1 from the cannon body 301 through the cylindrical cannon head 302, the airflow can be more concentratedly injected along the axial direction of the flue 1, and the cleaning effect on the accumulated ash and impurities in the central part of the flue 1 is good, which is especially suitable for the case where the accumulated ash in the flue is evenly distributed and concentrated in the central area.

[0053] As another embodiment of the utility model, as shown in Figure 4 The cannon head 302 is in a broken line shape, and the bending degree of the cannon head 302 is 130°-160° downward.

[0054] The cannon head 302 is in a broken line shape, and the bending degree of the cannon head 302 is 130°-160° downward. The broken line changes the jet direction of the airflow. When the compressed air passes through the cannon head 302, the airflow is jetted downward, so that the soot and impurities at the bottom of the flue 1 can be cleaned more effectively. In the actual operation of the waste power station, more dust and impurities will accumulate at the bottom of the flue 1 due to gravity, and the broken line-shaped cannon head 302 improves the cleaning effect of the bottom of the flue 1, ensures the smooth ventilation of the bottom of the flue 1, and reduces the risk of flue blockage caused by the accumulation of soot at the bottom.

[0055] As another embodiment of the utility model, as shown in Figure 5 The cannon head 302 is in a horn shape, and the inclination angle α of the cannon head 302 is 40°-70°.

[0056] The inclination angle α is the lower base angle of the trapezoidal part on the horn-shaped cannon head 302. The outlet area of the cannon head 302 gradually increases. When the compressed air passes through the horn-shaped cannon head 302, the airflow will produce a diffusion effect. A larger cleaning range can be covered, not only the soot at the center of the flue 1 can be cleaned, but also the soot around the inner wall of the flue 1 can be effectively cleaned.

[0057] In the embodiment of the utility model, the support assembly 4 comprises a tripod 401 welded with the flue 1, and the top end of the tripod 401 is bolted with a support frame 402, and the top end of the support frame 402 is in an arc shape and supports the cannon body 301.

[0058] Based on the above embodiment, the working process of the flue cleaning device for a waste power station provided by the utility model is as shown in Figure 6 When cleaning is needed, the ball valve 306 is opened, the compressed air in the gas storage tank flows into the cannon body 301 through the air inlet hose 304. The electromagnetic valve assembly 303 is opened according to the setting, so that the compressed air quickly rushes to the cannon head 302. The compressed air is jetted along the flue 1. Because the volume of the air expands rapidly during the jetting process, the pressure can be instantaneously converted into air jet power, forming a strong shock wave. During the cleaning process, the inlet pressure is monitored in real time through the pressure gauge 307. If the pressure is too high, the pressure relief valve 305 is manually or automatically opened to release the pressure, so as to ensure the safety of the cannon body 301. At the same time, the opening degree of the ball valve 306 is adjusted according to the pressure condition, so as to control the air flow entering the cannon body 301, and ensure the cleaning effect. When maintenance is needed, the manhole door 2 is opened, and the maintenance personnel enter the flue 1 for inspection.

[0059] The utility model on one hand can utilize air cannon 3 and clear away soot in time can avoid its corrosion and abrasion to flue wall, protect flue structure. On the other hand, manhole door 2 reduces the damage caused by frequent opening and closing door, reduces the impact to sealing structure and door frame. Air cannon 3 reasonable injection control, avoid excessive impact equipment, thereby prolong the service life of flue 1 and related equipment, reduce equipment replacement cost.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not limited to them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A device for cleaning a flue of a waste-to-energy plant, characterized in that, The utility model relates to a garbage power station flue cleaning device, including: Flue (1), manhole door (2), air cannon (3) and support assembly (4); One end of the flue (1) is communicated with a reaction tower, the other end of the flue (1) is communicated with a bag dust collector, the flue (1) is horizontally arranged, a through hole (101) is formed in the middle of the flue (1), the manhole door (2) is hinged to the outer periphery of the through hole (101) of the flue (1), circular holes (102) are formed on both sides of the manhole door (2) of the flue (1), the air cannon (3) is arranged at two circular holes (102), the air cannon (3) is inserted into the flue (1) through the circular hole (102), and the support assembly (4) is connected to the bottom end of the air cannon (3).

2. The garbage power station flue cleaning device according to claim 1, wherein: A hinge is fixedly connected to one side surface of the through hole (101) of the flue (1), and the manhole door (2) is hinged to the flue (1) through the hinge.

3. The garbage power station flue cleaning device according to claim 2, wherein: The manhole door (2) is rectangular or circular, and the radial length of the manhole door (2) is 500mm-800mm.

4. The garbage power station flue cleaning device according to claim 1, wherein: Each air cannon (3) comprises a cannon body (301), a cannon head (302), an electromagnetic valve assembly (303), an air inlet hose (304) and a pressure relief valve (305). One end of the cannon body (301) is connected to the cannon head (302) through a flange, the other end of the cannon body (301) is connected to the electromagnetic valve assembly (303) through a flange, the top end surface of the cannon body (301) is provided with the pressure relief valve (305), and the surface of the cannon body (301) is further connected with the air inlet hose (304).

5. The garbage power station flue cleaning device according to claim 4, wherein: A ball valve (306) is arranged on the air inlet hose (304), one end of the air inlet hose (304) away from the cannon body (301) is communicated with a gas storage tank, and a pressure gauge (307) is further arranged on the air inlet hose (304) close to the cannon body (301).

6. The garbage power station flue cleaning device according to claim 5, wherein: The cannon head (302) is cylindrical, and the cannon head (302) is directly inserted into the flue (1) through the circular hole (102).

7. The garbage power station flue cleaning device according to claim 5, wherein: The cannon head (302) is in the shape of a broken line, and the bending degree of the cannon head (302) is 130°-160°.

8. The garbage power station flue cleaning device according to claim 5, wherein: The cannon head (302) is in the shape of a horn, and the inclination angle α of the cannon head (302) is 40°-70°.

9. The garbage power station flue cleaning device according to any one of claims 6-8, wherein: The support assembly (4) comprises a tripod (401) welded with the flue (1), and a support frame (402) bolted with the top end of the tripod (401), and the top end of the support frame (402) is arc-shaped to support the barrel (301).

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