CN220689123U

CN220689123U - Air preheater

Info

Publication number: CN220689123U
Application number: CN202322170607.1U
Authority: CN
Inventors: 林清博; 王光宗
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-14
Filing date: 2023-08-14
Publication date: 2024-03-29
Anticipated expiration: 2033-08-14

Abstract

The utility model relates to the technical field of air preheaters, and discloses an air preheater, which comprises a shell, a plurality of heating pipes fixed on the inner wall of the shell, a plurality of first filter screens and a plurality of second filter screens for blocking dust, and further comprises: the mounting frame is fixed on the surfaces of the first filter screen and the second filter screen and used for driving the first filter screen and the second filter screen to move, and a holding groove which enables the mounting frame to be held from the inside of the housing is formed in the top of the housing; the side plates are fixed on the inner wall of the shell and enable the smoke to normally contact with the two filter screens, and the mounting frame is positioned between the side plates at two sides; a plurality of rotating shafts which rotate with the inner wall of the shell, wherein a baffle plate for blocking the holding groove is fixed on the surface of each rotating shaft; according to the utility model, when the filter screen is cleaned, the stop is not needed, and meanwhile, after the baffle plate is pulled out of the shell inside the mounting frame, the baffle plate can block the holding groove, so that air is not easy to separate from the shell inside, and the device has better practicability.

Description

Air preheater

Technical Field

The utility model relates to the technical field of air preheaters, in particular to an air preheater.

Background

The air preheater is a heating surface for preheating air entering the boiler (incinerator) to a certain temperature through internal cooling fins by flue gas in the tail flue of the boiler or the tail flue of the incinerator, is equipment for improving the heat exchange performance of the boiler and reducing the energy consumption, and is generally divided into three types of plate type, rotary type and tubular type.

The Chinese patent with publication number CN218348689U is granted after searching. The air preheater for boiler drying comprises an air preheater shell, wherein a heating pipe is fixedly connected to the inner wall of the air preheater shell, a vent hole is formed in the left side of the inner wall of the air preheater shell and positioned on the left side of the heating pipe, a cover plate is arranged at the top of the air preheater shell, a filter screen is fixedly connected to the bottom of the cover plate, and the bottom of the filter screen penetrates through the bottom of the inner wall of the air preheater shell. The utility model solves the problem that the prior air preheater has no dust filtering function, most air preheaters on the market directly absorb air for heating, a large amount of impurities and dust are mixed in the air, and the impurities and the dust enter the boiler along a pipeline to cause the internal dirtying of the boiler.

The device disclosed in this patent filters impurity and dust in the air through the filter screen to avoid the dust to influence heating pipe and other heat equipment, but the device is when clearing up the filter screen, because apron and a plurality of filter screens in the device are directly fixed, when the filter screen needs to clear up, operating personnel can only take out whole filter screens simultaneously from the device is inside, thereby lead to the device to appear leaking the gas condition easily, and make the heating pipe receive impurity pollution, make the device only can shut down earlier and clear up the filter screen again, thereby brought certain inconvenience when using for the device.

Disclosure of Invention

The utility model aims to provide an air preheater, which does not need to be stopped when a filter screen is cleaned, and meanwhile, after the baffle plate is pulled out of the inside of the shell after the installation frame is pulled out, the baffle plate can block the holding groove, so that air is not easy to separate from the inside of the shell, and the device has better practicability.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an air preheater, includes shell, a plurality of heating pipes that are fixed in the shell inner wall, a plurality of first filter screens and a plurality of second filter screens that are used for stopping dust, still includes:

the mounting frame is fixed on the surfaces of the first filter screen and the second filter screen and used for driving the first filter screen and the second filter screen to move, and a holding groove which enables the mounting frame to be held from the inside of the housing is formed in the top of the housing;

the side plates are fixed on the inner wall of the shell and enable the smoke to normally contact with the two filter screens, and the mounting frame is positioned between the side plates at two sides;

the surface of the rotating shaft is fixedly provided with a baffle plate for blocking the holding groove, the surface of the baffle plate is fixedly provided with a spring which is positioned on the surface of the rotating shaft and used for driving the baffle plate to move, and one end of the spring is fixedly connected with the inner wall of the shell;

the connecting plate is fixed at the top of the mounting frame, so that the mounting frame can move along with the connecting plate, and a pulling plate for taking the mounting frame is fixed on one side of the connecting plate.

Preferably, the spring is a torsion spring, and a plurality of retaining plates are fixed on the inner wall of the shell.

Preferably, the connecting plate on one side is fixed on the rear side of the top surface of the surface mounting frame where the first filter screen is located, and the connecting plate on the other side is fixed on the front side of the top of the surface mounting frame where the second filter screen is located.

Preferably, a plurality of clamping grooves matched with the mounting frames are formed in the surface of the shell, and the mounting frames are located inside the clamping grooves.

Preferably, the height of the baffle is greater than or equal to the length of the holding groove.

Preferably, a plurality of balls are mounted on the inner wall of the side plate, and the surfaces of the balls are contacted with the mounting frame.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the plurality of first filter screens and the plurality of second filter screens are arranged, so that when the plurality of first filter screens are taken out from the inside of the shell and need to be cleaned, the second filter screens can still filter dust and impurities in the air, and further, the device does not need to be stopped when the filter screens are cleaned, and meanwhile, after the baffle plate is pulled out of the inside of the shell at the mounting frame, the baffle plate can block the holding groove, so that the air is not easy to separate from the inside of the shell, and the device has better practicability.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional perspective view of the present utility model;

FIG. 3 is a schematic view of a partial perspective structure of the present utility model;

FIG. 4 is a schematic view of a partial perspective structure of the present utility model;

fig. 5 is a schematic view of a partial cross-sectional perspective structure of the present utility model.

In the figure: 1. a housing; 2. heating pipes; 3. a first filter screen; 4. a second filter screen; 5. a mounting frame; 6. a holding groove; 7. a side plate; 8. a rotating shaft; 9. a baffle; 10. a spring; 11. a connecting plate; 12. pulling a plate; 13. a retaining plate; 14. and (3) rolling balls.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, an air preheater includes a housing 1, a plurality of heating pipes 2, a plurality of first filter screens 3 and a plurality of second filter screens 4, the heating pipes 2 are fixed on the inner wall of the housing 1, the surfaces of the first filter screens 3 and the second filter screens 4 are all fixed with a mounting frame 5, a holding groove 6 matched with the mounting frame 5 is provided on the top of the housing 1, a plurality of side plates 7 are fixed on two sides of the inner wall of the housing 1, the mounting frame 5 is located between the side plates 7 on two sides, a plurality of rotating shafts 8 are rotatably connected on the inner wall of the housing 1, a baffle 9 is fixed on the surface of the rotating shaft 8, a spring 10 located on the surface of the rotating shaft 8 is fixed on the surface of the baffle 9, one end of the spring 10 is fixedly connected with the inner wall of the housing 1, a connecting plate 11 is fixed on the top of the mounting frame 5, and a pulling plate 12 is fixed on one side of the connecting plate 11.

The spring 10 is a torsion spring, and the inner wall of the shell 1 is fixed with a plurality of retaining plates 13, so that the baffle plate 9 can receive the elastic force effect of the spring 10 to rotate towards the holding groove 6, the baffle plate 9 can block the holding groove 6, the retaining plates 13 can be in surface contact with the baffle plate 9, and the baffle plate 9 and the rotating shaft 8 can normally rotate.

The connecting plate 11 on one side is fixed on the rear side of the top surface of the surface mounting frame 5 where the first filter screen 3 is located, the connecting plate 11 on the other side is fixed on the front side of the top of the surface mounting frame 5 where the second filter screen 4 is located, when the rear side pulling plate 12 moves, the rear side pulling plate 12 can normally pull up a plurality of first filter screens 3, and the condition that the first filter screen 3 or the second filter screen 4 is pulled upwards is ensured, and the pulling plate 12 on the top of the other filter screen does not hinder the normal movement of the other filter screen.

The draw-in groove that a plurality of cooperation installing frame 5 used has been seted up on the surface of shell 1, and installing frame 5 is located the draw-in groove inside, makes installing frame 5 can receive the influence on draw-in groove surface, obtains spacing effect to make installing frame 5 can not appear the condition of overturning.

The height of the baffle plate 9 is greater than or equal to the length of the holding groove 6, so that the baffle plate 9 can completely block the holding groove 6, and air is not easy to flow out through the holding groove 6.

The inner wall of curb plate 7 installs a plurality of balls 14, and ball 14 surface and mounting frame 5 contact, make mounting frame 5 when the activity, ball 14 can roll to can be more convenient when making mounting frame 5 activity, make the operating personnel take out mounting frame 5 from shell 1 inside more easily.

Working principle: the air first enters the shell 1, a plurality of first filter screens 3 and second filter screens 4 can filter the air at this moment, impurity and dust that make mix with in the air can be blocked, thereby make dust and impurity's influence to heating pipe 2 can reduce, then the air will contact with heating pipe 2, make the air can obtain preheating effect, the inside one end of rethread shell 1 discharges shell 1, when needs to clear up first filter screen 3, upwards pull the arm-tie 12 of rear side, make arm-tie 12 drive mounting frame 5 upwards remove through connecting plate 11, and after mounting frame 5 shifts out take put groove 6, a plurality of baffles 9 can rotate towards keeping out plate 13 through spring 10, make baffle 9 can block and put groove 6, thereby make the air be difficult for breaking away from taking put groove 6, then alright carry out cleaning treatment to first filter screen 3, simultaneously after first filter screen 3 takes out, second filter screen 4 still is located inside shell 1, thereby make this device need not to stop when the filter screen to clear up.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an air preheater, includes shell (1), a plurality of heating pipe (2) that are fixed in shell (1) inner wall, a plurality of first filter screen (3) and a plurality of second filter screen (4) that are used for stopping the dust, its characterized in that still includes:

the device comprises a first filter screen (3) and a second filter screen (4), and a movable mounting frame (5) fixed on the surfaces of the first filter screen and the second filter screen, wherein a holding groove (6) for holding the mounting frame (5) from the inside of the housing (1) is formed in the top of the housing (1);

the side plates (7) are fixed on the inner wall of the shell (1) and enable the smoke to normally contact with the two filter screens, and the mounting frame (5) is positioned between the side plates (7) at two sides;

a plurality of rotating shafts (8) which rotate with the inner wall of the shell (1), a baffle (9) used for blocking the holding groove (6) is fixed on the surface of the rotating shafts (8), a spring (10) which is positioned on the surface of the rotating shafts (8) and used for driving the baffle (9) to move is fixed on the surface of the baffle (9), and one end of the spring (10) is fixedly connected with the inner wall of the shell (1);

the connecting plate (11) is fixed on the top of the mounting frame (5) so that the mounting frame (5) can move along with the connecting plate, and a pulling plate (12) for taking the mounting frame (5) is fixed on one side of the connecting plate (11).

2. An air preheater as set forth in claim 1, wherein: the spring (10) is a torsion spring, and a plurality of retaining plates (13) are fixed on the inner wall of the shell (1).

3. An air preheater as set forth in claim 1, wherein: one side connecting plate (11) is fixed on the rear side of the top surface of the surface mounting frame (5) where the first filter screen (3) is located, and the other side connecting plate (11) is fixed on the front side of the top of the surface mounting frame (5) where the second filter screen (4) is located.

4. An air preheater as set forth in claim 1, wherein: the surface of shell (1) has seted up a plurality of draw-in grooves that cooperate installation frame (5) to use, installation frame (5) are located the draw-in groove inside.

5. An air preheater as set forth in claim 1, wherein: the height of the baffle plate (9) is more than or equal to the length of the holding groove (6).

6. An air preheater as set forth in claim 1, wherein: the inner wall of the side plate (7) is provided with a plurality of balls (14), and the surfaces of the balls (14) are contacted with the mounting frame (5).