Ash blocking prevention structure for air pre-heater

Abstract

The utility model relates to the technical field of air pre-heaters, and discloses an anti-dust-blocking structure for an air pre-heater, which comprises an air pre-heater shell, four first mounting holes are arranged on the air pre-heater shell, a dust screen cover is arranged at the front end of the air pre-heater shell, and four second mounting holes respectively matched with the first mounting holes are arranged on the dust screen cover. The inner sides of the four second mounting holes are in threaded connection with mounting bolts, the four mounting bolts are in threaded connection with the inner sides of the four first mounting holes respectively, and the outer sides of the four mounting bolts are in threaded connection with mounting nuts. The electrostatic generator can generate static electricity and conduct the static electricity to the metal dustproof net through the lead, before air enters the shell of the air pre-heater, dust in the air can be adsorbed to the metal dustproof net, the dust in the air entering the shell of the air pre-heater is reduced, and it is avoided that the dust is attached to cooling fins in the shell of the air pre-heater, and normal heat transfer is affected.

Description

Technical Field

[0001] This utility model relates to the field of air preheater technology, specifically to an anti-clogging structure for air preheaters. Background Technology

[0002] An air preheater is a device that uses internal heat exchange fins to preheat the air entering the boiler to a certain temperature, thereby improving the boiler's heat exchange performance and reducing energy consumption.

[0003] Since dust exists in the air, when dust enters the air preheater, it may adhere to the heat sink inside, affecting normal heat transfer. Therefore, an anti-dust-clogging structure for air preheaters is proposed to solve the above problem. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to solve the problem that dust in the air may adhere to the heat sink inside the air preheater and affect normal heat transfer. Therefore, an anti-dust-clogging structure for air preheaters is proposed.

[0006] (II) Technical Solution

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] An anti-clogging structure for an air preheater includes an air preheater shell with four first mounting holes. A dustproof mesh cover is provided at the front end of the air preheater shell. The dustproof mesh cover has four second mounting holes that are respectively adapted to the first mounting holes. The inner side of each of the four second mounting holes is threaded with a mounting bolt. The four mounting bolts are respectively threaded into the inner side of the four first mounting holes. The outer side of the four mounting bolts is threaded with a mounting nut. A mounting base is fixedly connected to the inner bottom wall of the air preheater shell. An electrostatic generator is detachably connected to the mounting base. The electrostatic generator is provided with two leads, one of which is grounded and the other is connected to the dustproof mesh cover.

[0009] The dustproof mesh cover includes a metal dustproof mesh and an insulating shell. The insulating shell is fixedly connected to the outside of the metal dustproof mesh. Another lead wire is connected to the metal dustproof mesh. All four second mounting holes are opened on the insulating shell.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Preferably, the electrostatic generator is provided with extension plates on the left and right sides, and each extension plate has several threaded holes. Small bolts are threaded to the inside of the several threaded holes, and one end of each small bolt extends to the inside of the mounting base.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] This invention incorporates an electrostatic generator and leads. The electrostatic generator generates static electricity, which is then conducted to a metal dustproof mesh via the leads. Before air enters the air preheater housing, dust in the air is adsorbed onto the metal dustproof mesh, reducing the amount of dust entering the air preheater housing and preventing dust from adhering to the internal heat sinks and affecting normal heat transfer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the relative positional relationship between the air preheater shell and the mounting nut of this utility model;

[0017] Figure 3 This is a schematic diagram showing the relative positional relationship between the extension piece and the threaded hole of this utility model;

[0018] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Air preheater housing; 2. First mounting hole; 3. Dustproof mesh cover; 31. Metal dustproof mesh; 32. Insulating housing; 4. Second mounting hole; 5. Mounting bolt; 6. Mounting nut; 7. Mounting base; 8. Static generator; 9. Lead wire; 10. Extension plate; 11. Threaded hole; 12. Small bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the embodiments, by Figure 1-4A dust-proof structure for an air preheater is provided, comprising an air preheater housing 1, four first mounting holes 2 on the air preheater housing 1, a dustproof mesh cover 3 at the front end of the air preheater housing 1, and four second mounting holes 4 on the dustproof mesh cover 3 respectively adapted to the first mounting holes 2. The inner sides of the four second mounting holes 4 are threaded with mounting bolts 5, and the four mounting bolts 5 are threaded to the inner sides of the four first mounting holes 2 respectively. The outer sides of the four mounting bolts 5 are threaded with mounting nuts 6. A mounting base 7 is fixedly connected to the inner bottom wall of the air preheater housing 1. An electrostatic generator 8 is detachably connected to the mounting base 7. The electrostatic generator 8 is provided with two leads 9, one lead 9 is grounded, and the other lead 9 is connected to the dustproof mesh cover 3.

[0022] The dustproof mesh cover 3 includes a metal dustproof mesh 31 and an insulating shell 32. The insulating shell 32 is fixedly connected to the outside of the metal dustproof mesh 31. Another lead wire 9 is connected to the metal dustproof mesh 31. Four second mounting holes 4 are all opened on the insulating shell 32.

[0023] With the above settings, the electrostatic generator 8 can generate static electricity and conduct it to the metal dustproof mesh 31 via the lead wire 9. Before the air enters the air preheater housing 1, the dust in the air will be adsorbed onto the metal dustproof mesh 31, reducing the amount of dust entering the air preheater housing 1. When too much dust is adsorbed on the metal dustproof mesh 31 and it needs to be cleaned, simply unscrew the four mounting nuts 6 to release them from the four mounting bolts 5, and the dustproof mesh cover 3 can be removed to clean the dust on the metal dustproof mesh 31.

[0024] Reference Figure 1-4 Among them, the electrostatic generator 8 has extension plates 10 on both the left and right sides. Each extension plate 10 has several threaded holes 11. The inner side of each threaded hole 11 is threaded with a small bolt 12. One end of each small bolt 12 extends to the inner side of the mounting base 7.

[0025] With the above-described structure, when the electrostatic generator 8 malfunctions, it can be removed and repaired by unscrewing several small bolts 12 to disengage them from the inner side of the mounting base 7 and several threaded holes 11.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-clogging structure for an air preheater, comprising an air preheater shell (1), characterized in that, The air preheater housing (1) has four first mounting holes (2). The front end of the air preheater housing (1) is provided with a dustproof mesh cover (3). The dustproof mesh cover (3) has four second mounting holes (4) that are respectively adapted to the first mounting holes (2). The inner side of each of the four second mounting holes (4) is threaded with a mounting bolt (5). The four mounting bolts (5) are respectively threaded to the inner side of the four first mounting holes (2). The outer side of each of the four mounting bolts (5) is threaded with a mounting nut (6). The inner bottom wall of the air preheater housing (1) is fixedly connected with a mounting base (7). The mounting base (7) is detachably connected with an electrostatic generator (8). The electrostatic generator (8) is provided with two leads (9). One lead (9) is grounded, and the other lead (9) is connected to the dustproof mesh cover (3). The dustproof mesh cover (3) includes a metal dustproof mesh (31) and an insulating shell (32). The insulating shell (32) is fixedly connected to the outside of the metal dustproof mesh (31). Another lead wire (9) is connected to the metal dustproof mesh (31). The four second mounting holes (4) are all opened on the insulating shell (32).

2. The anti-clogging structure for an air preheater according to claim 1, characterized in that: The electrostatic generator (8) has extension plates (10) on its left and right sides. Each extension plate (10) has several threaded holes (11). The inner side of each threaded hole (11) is threaded with a small bolt (12). One end of each small bolt (12) extends to the inner side of the mounting base (7).

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