Ash removal device for boiler air preheater

Abstract

The utility model relates to the technical field of air preheaters, and discloses a boiler air preheater ash removal device which comprises an equipment body, a plurality of sets of supporting plates are arranged in the equipment body, and a plurality of elastic contact pieces distributed at equal intervals are fixedly connected to the side faces, away from one another, of each set of supporting plates. A supporting piece is arranged above the equipment body, an exhaust pipe is installed on the inner wall of the supporting piece, and a plurality of nozzles distributed at equal intervals fixedly communicate with the outer surface of the exhaust pipe. According to the ash removal device for the boiler air preheater, the multiple elastic contact pieces are installed and can make uniform contact with the surface of a pipeline on the equipment body, so that the cleaning efficiency of the pipeline is improved, stubborn impurities can be removed, airflow can be jetted to the cleaned pipeline through cooperation of the exhaust pipe and the nozzle, and the dust removal effect is improved. And therefore, the airflow can remove impurities, and the overall practicability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air preheaters, and specifically to an ash removal device for a boiler air preheater. Background Technique

[0002] An air preheater is a heating surface in the flue gas duct at the tail of a boiler that preheats the air entering the boiler to a certain temperature through internal fins. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. Air preheaters are generally divided into three types: plate type, rotary type, and tubular type. Taking the rotary type as an example, the working principle of the air preheater is introduced. A large amount of unburned combustibles will deposit on the heat transfer elements, which may cause the air preheater to catch fire. Therefore, the reasons for its ignition are analyzed, and the ignition reasons and countermeasures are described in detail; the tripping analysis and air leakage treatment are also introduced in detail.

[0003] A prior patent (publication number: CN215725420U) discloses an automatic ash removal device for a new type of boiler air preheater, belonging to the technical field of environmental protection ash removal equipment. It includes a driving component, a scraper component, and a guide rail. The driving component drives the outer pull rod to move left and right, and the outer pull rod drives the scraper component to move left and right for ash cleaning. The outer pull rod is connected to the scraper component. The guide rail includes guide rail one and guide rail two. The scraper component is installed on the guide rail. The scraper component includes a guide wheel seat, a support frame, a first group of scrapers, a second group of scrapers, and an inner pull rod. A support frame is installed between the first group of scrapers and the second group of scrapers. The first group of scrapers includes symmetric guide wheel seats, a main pipe, and a scraper device. A main pipe is fixed between the two guide wheel seats, and the scraper device is fixedly installed on the main pipe. Guide wheels are provided on the guide wheel seats. The first group of scrapers and the second group of scrapers are connected by an inner pull rod, solving the technical problems of poor ash cleaning effect and poor stability of existing equipment, and are mainly applied to air preheaters.

[0004] During the use of the above document, since the scraper is in a vertical and horizontal shape, it cannot fit the surface of the air preheater pipe, so it cannot clean the dust evenly. At the same time, impurities cannot be collected during the cleaning process, making it inconvenient to use. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the present application provides an ash removal device for a boiler air preheater, which has the advantages of uniform contact and improved cleaning effect, and solves the problems raised in the background technique.

[0006] To achieve the above object, the present application provides the following technical solution: An ash removal device for a boiler air preheater, including an equipment body. Inside the equipment body, there are multiple groups of support plates. On one side of each group of support plates away from each other, a plurality of elastic contact members are fixedly connected at equal distances. Above the equipment body, there is a support member. Inside the support member, an exhaust pipe is installed. On the outer surface of the exhaust pipe, a plurality of nozzles are fixedly communicated at equal distances.

[0007] Through the above solution, by installing a plurality of elastic contact members, the surface of the pipeline on the equipment body can be evenly contacted.

[0008] Further, each group of the support plates is slidably connected to the support member.

[0009] Through the above solution, installing the support member can limit the multiple support plates, enabling the support plates to stably perform vertical sliding.

[0010] Further, a plurality of springs are fixedly connected between each group of the support plates, and all the springs are in a compressed state.

[0011] Through the above solution, installing the springs can push the plurality of elastic contact members to contact the equipment body through the deformation force of the springs, so that the elastic contact members can contact the surface of the equipment body.

[0012] Further, a rotating rod is rotatably connected to the inner wall of the support member. On the outer surface of the rotating rod, multiple groups of symmetrical thread grooves are provided. Above the equipment body, there are multiple groups of clamping plates. All the clamping plates contact the support plates close to them, and all the clamping plates are threadedly connected to the thread grooves close to them.

[0013] Through the above solution, the cooperation of installing the rotating rod and the thread grooves can adjust the positions of the multiple clamping plates, enabling them to push the support plates, thereby adjusting the distance between the support plates and the pipeline on the equipment body.

[0014] Further, only one end of each of the plurality of elastic contact members is fixedly connected to the support plate close to it.

[0015] Through the above solution, only one end of the elastic contact member is fixedly connected to the support plate, which is convenient for installing the support plate into the equipment body and improves the convenience during installation.

[0016] Further, a support rod is inserted between each group of the support plates, and a collection box is sleeved on the outer surface of the support rod.

[0017] Through the above solution, installing the collection box can collect the removed dust and prevent the dust from remaining on the equipment body.

[0018] Further, both ends of the support rod are threadedly connected with threaded sleeves, and a plurality of traction ropes are fixedly connected to the outer surfaces of the two threaded sleeves and the support member.

[0019] Through the above solution, installing the traction ropes can facilitate the traction of the support member by external traction equipment, enabling it to drive the support member to slide on the equipment body.

[0020] Further, an intake hose is fixedly communicated with the outer surface of the exhaust pipe, and the other end of the intake hose is fixedly connected to the output end of an external air pump.

[0021] Through the above solution, installing the intake hose can facilitate the entry of external gas into the exhaust pipe and avoid movement interference.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] For this ash removal device of a boiler air preheater, by installing a plurality of elastic contact members, the surface of the pipeline on the equipment body can be evenly contacted, thereby improving the cleaning efficiency, removing stubborn impurities, and through the cooperation of the exhaust pipe and the nozzle, air flow can be sprayed onto the cleaned pipeline, so that the air flow can remove the impurities, improving the overall practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of this application;

[0025] Figure 2 is a schematic diagram of the support member structure of this application Figure 1 ;

[0026] Figure 3 is a schematic diagram of the support member structure of this application Figure 2 ;

[0027] Figure 4 is a schematic diagram of the support plate structure of this application.

[0028] In the figure:

[0029] 1, equipment body; 2, support plate; 3, elastic contact member; 4, support member; 5, exhaust pipe; 6, nozzle; 7, spring; 8, rotating rod; 9, thread groove; 10, clamping plate; 11, support rod; 12, collection box; 13, threaded sleeve; 14, traction rope; 15, intake hose. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0031] Please refer to Figure 1 、 Figure 2 and Figure 3 In this embodiment, an ash removal device for a boiler air preheater includes an equipment body 1. Inside the equipment body 1, multiple groups of support plates 2 are provided. On the mutually remote side surfaces of each group of support plates 2, a plurality of elastic contact members 3 are fixedly connected and are evenly distributed at equal intervals. Above the equipment body 1, there is a support member 4. Inside the wall of the support member 4, an exhaust pipe 5 is installed. On the outer surface of the exhaust pipe 5, a plurality of nozzles 6 are fixedly communicated and are evenly distributed at equal intervals. By installing a plurality of elastic contact members 3, the surface of the pipeline on the equipment body 1 can be evenly contacted, thereby improving the cleaning efficiency thereof, and stubborn impurities can be removed. And through the cooperation of the exhaust pipe 5 and the nozzles 6, air flow can be sprayed on the cleaned pipeline, so that the air flow can remove the impurities, improving the overall practicability.

[0032] Please refer to Figure 1 、 Figure 2 and Figure 3 Multiple groups of support plates 2 are all slidably connected to the support member 4. Installing the support member 4 can limit multiple support plates 2, enabling the support plates 2 to stably perform vertical sliding. Between each group of support plates 2, a plurality of springs 7 are fixedly connected. A plurality of springs 7 are all in a compressed state. Installing the springs 7 can push a plurality of elastic contact members 3 to contact the equipment body 1 through the deformation force of the springs 7, so that the elastic contact members 3 can contact the surface of the equipment body 1. Inside the wall of the support member 4, a rotating rod 8 is rotatably connected. On the outer surface of the rotating rod 8, multiple groups of symmetric thread grooves 9 are provided. Above the equipment body 1, multiple groups of clamping plates 10 are provided. Multiple clamping plates 10 all contact the support plates 2 close to them. Multiple clamping plates 10 are all threadedly connected to the thread grooves 9 close to them. Installing the cooperation of the rotating rod 8 and the thread grooves 9 can adjust the positions of multiple clamping plates 10, enabling them to push the support plates 2, thereby being able to adjust the distance between the support plates 2 and the pipeline on the equipment body 1.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 4, multiple elastic contact members 3 are fixedly connected to the adjacent support plate 2 only at one end. The elastic contact member 3 is fixedly connected to the support plate 2 only at one end, which facilitates the installation of the support plate 2 into the equipment body 1 and improves the convenience during installation. A support rod 11 is inserted between multiple groups of support plates 2, and a collection box 12 is sleeved on the outer surface of the support rod 11. Installing the collection box 12 can collect the removed dust and prevent the dust from staying on the equipment body 1. Threaded sleeves 13 are threadedly connected to both ends of the support rod 11, and multiple traction ropes 14 are fixedly connected to the outer surfaces of the two threaded sleeves 13 and the support member 4. Installing the traction ropes 14 can facilitate the traction of the support member 4 by an external traction device, enabling it to drive the support member 4 to slide on the equipment body 1. An intake hose 15 is fixedly communicated with the outer surface of the exhaust pipe 5, and the other end of the intake hose 15 is fixedly connected to the output end of an external air pump. Installing the intake hose 15 can facilitate the entry of external gas into the exhaust pipe 5 and avoid movement interference.

[0034] In an ash removal device for a boiler air preheater in this embodiment, by installing multiple elastic contact members 3, the surface of the pipeline on the equipment body 1 can be evenly contacted, thereby improving the cleaning efficiency and being able to remove stubborn impurities. The cleaning effect is good, and through the cooperation of the exhaust pipe 5 and the nozzle 6, air flow can be sprayed onto the cleaned pipeline, so that the air flow can remove the impurities, improving the overall practicality.

[0035] The working principle of the above embodiment is as follows: First, connect the traction rope 14 to an external traction device, and then rotate the rotating rod 8 so that multiple clamping plates 10 contact the adjacent support plate 2, thereby making multiple elastic contact members 3 contact the equipment body 1. Through the cooperation of the installed elastic contact member 3 and the spring 7, the elastic contact member 3 can contact the equipment body more closely, thereby improving the cleaning efficiency and being able to remove stubborn impurities. Subsequently, the external traction device pulls the support member 4 through the traction rope 14, enabling the support member 4 to stably slide vertically on the equipment body 1, and cleaning the outer surface of the equipment body 1 through the elastic contact members 3. Then, the air pump transports gas through the intake hose 15 into the exhaust pipe 5 and sprays it out from multiple nozzles 6, spraying air flow onto the cleaned pipeline, so that the air flow can remove the impurities, improving the overall practicality. By installing the collection box 12, the cleaned impurities can be collected to prevent the impurities from staying on the equipment body 1. The sprayed air flow can be a high-pressure air flow, so that when the air flow is sprayed onto the equipment body 1, it can be cleaned more thoroughly, facilitating the removal of stubborn impurities on the equipment body, thereby improving the overall cleaning efficiency. The collection box 12 is set to be detachable, which can facilitate the collection of impurities and at the same time facilitate the installation of the overall cleaning device. During the working process, it can limit the whole, enabling the cleaning device to stably slide on the equipment body 1 and clean its surface.

[0036] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0037] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An ash removal device for a boiler air preheater, comprising an equipment body (1), characterized in that: Inside the device body (1), there are multiple groups of support plates (2). On one side of each group of support plates (2) that are away from each other, a plurality of elastic contact members (3) are fixedly connected at equal distances. Above the device body (1), there is a support member (4). An exhaust pipe (5) is installed on the inner wall of the support member (4). A plurality of nozzles (6) are fixedly communicated at equal distances on the outer surface of the exhaust pipe (5).

2. The ash removal device for a boiler air preheater according to claim 1, characterized in that: Multiple groups of the support plates (2) are all slidably connected to the support member (4).

3. The ash removal device for a boiler air preheater according to claim 1, characterized in that: A plurality of springs (7) are fixedly connected between each group of the support plates (2), and all of the plurality of springs (7) are in a compressed state.

4. The ash removal device for a boiler air preheater according to claim 1, characterized in that: A rotating rod (8) is rotatably connected to the inner wall of the support member (4). A plurality of groups of symmetric thread grooves (9) are formed on the outer surface of the rotating rod (8). Above the device body (1), there are multiple groups of clamping plates (10). All of the plurality of clamping plates (10) are in contact with the support plates (2) adjacent to them, and all of the plurality of clamping plates (10) are threadedly connected to the thread grooves (9) adjacent to them.

5. The ash removal device for a boiler air preheater according to claim 1, characterized in that: Only one end of each of the plurality of elastic contact members (3) is fixedly connected to the support plate (2) adjacent to it.

6. The ash removal device for a boiler air preheater according to claim 1, characterized in that: A support rod (11) is inserted between multiple groups of the support plates (2). A collection box (12) is sleeved on the outer surface of the support rod (11).

7. The ash removal device for a boiler air preheater according to claim 6, characterized in that: Threaded sleeves (13) are threadedly connected to both ends of the support rod (11). A plurality of traction ropes (14) are fixedly connected between the two threaded sleeves (13) and the outer surface of the support member (4).

8. The ash removal device for a boiler air preheater according to claim 1, wherein: An intake hose (15) is fixedly communicated with the outer surface of the exhaust pipe (5). The other end of the intake hose (15) is fixedly connected to the output end of an external air pump.

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