CN216869301U

CN216869301U - System for preventing blockage of attachments in rotary air preheater

Info

Publication number: CN216869301U
Application number: CN202122915149.0U
Authority: CN
Inventors: 杨伟光; 杨占海; 尚志强; 张彦; 刘名声
Original assignee: Inner Mongolia Daban Power Generation Co ltd
Current assignee: Inner Mongolia Daban Power Generation Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-07-01
Anticipated expiration: 2031-11-25

Abstract

The utility model relates to the technical field of rotary air preheaters, in particular to a system for preventing attachments in a rotary air preheater from being blocked, which comprises a shell with an opening at the top and the bottom, wherein an outer rotating ring and an inner rotating ring are rotationally connected in the shell, the inner rotating ring is positioned at the central position of the outer rotating ring, a plurality of heat transfer plates are fixedly connected between the outer rotating ring and the inner rotating ring, the system also comprises a motor for driving the inner rotating ring to rotate, a material scraping part is arranged between every two adjacent heat transfer plates, and the system also comprises a driving mechanism for driving the material scraping part to clean the two adjacent heat transfer plates; when the motor drives the inner rotating ring to rotate, the driving mechanism works, a top beam is fixedly installed at the top of the outer shell, the motor is fixedly installed on the top beam, and a rotating disc is fixedly connected to the top of the inner rotating ring; when the rotary air preheater works, the heat transfer plate can be automatically cleaned without manual cleaning.

Description

System for preventing blockage of attachments in rotary air preheater

Technical Field

The utility model relates to the technical field of rotary air preheaters, in particular to a system for preventing attachments in a rotary air preheater from being blocked.

Background

The air preheater is a preheater which heats air required by fuel combustion to a certain temperature by using the waste heat of flue gas in a tail flue of a boiler. In modern utility boilers, it is an indispensable and important component. The rotary air preheater is a commonly used type of air preheater, and the rotary air preheater mainly transfers heat through heat transfer plates when in operation, but after the heat transfer plates of the conventional rotary air preheater are used for a long time, a large amount of attachments are accumulated on the surfaces of the heat transfer plates, which easily causes blockage.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a system for preventing fouling in a rotary air preheater, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a system for preventing attachments in a rotary air preheater from being blocked comprises a shell with an opening at the top and the bottom, wherein an outer rotary ring and an inner rotary ring are rotationally connected in the shell, the inner rotary ring is positioned at the central position of the outer rotary ring, a plurality of heat transfer plates are fixedly connected between the outer rotary ring and the inner rotary ring, the system also comprises a motor for driving the inner rotary ring to rotate, a material scraping part is arranged between every two adjacent heat transfer plates, and the system also comprises a driving mechanism for driving the material scraping part to clean the two adjacent heat transfer plates; when the motor drives the inner rotating ring to rotate, the driving mechanism works.

Preferably, the top fixed mounting of shell has the back timber, and motor fixed mounting is on the back timber, and inner swivel top fixedly connected with carousel, the output shaft tip and the carousel fixed connection of motor.

Preferably, the scraping piece comprises a base plate, two first sliding plates and two second sliding plates, the two first sliding plates are respectively sleeved on two sides of the base plate in a sliding manner, and the second sliding plates are sleeved on one sides of the first sliding plates, which are far away from the base plate, in a sliding manner; one side of the second sliding plate, which is far away from the first sliding plate, is abutted against the heat transfer plate.

Preferably, a first sliding groove is formed in one side, close to the base plate, of the first sliding plate, and a second sliding groove is formed in one side, close to the first sliding plate, of the second sliding plate; and a first pressure spring is arranged in the first sliding groove, two ends of the first pressure spring are fixedly connected with the base plate and the first sliding plate respectively, a second pressure spring is arranged in the second sliding groove, and two ends of the second pressure spring are fixedly connected with the first sliding plate and the second sliding plate respectively.

Preferably, the driving mechanism comprises a reciprocating screw rod rotatably installed between the inner rotating ring and the outer rotating ring and a guide rod fixedly connected between the inner rotating ring and the outer rotating ring, the substrate is slidably connected to the guide rod and is in threaded connection with the reciprocating screw rod, one end, far away from the outer rotating ring, of the reciprocating screw rod extends into the inner rotating ring and is fixedly connected with a first bevel gear, a second bevel gear meshed with the first bevel gear is further arranged in the inner rotating ring, a bottom beam is fixedly connected to the bottom of the shell, and the bottom of the second bevel gear is fixedly connected to the bottom beam.

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

according to the system for preventing the blockage of the attachments in the rotary air preheater, when the rotary air preheater works, the motor works to drive the inner rotary ring to rotate, the inner rotary ring rotates to drive the driving mechanism to work, the scraping member can be driven to clean the two heat transfer plates on the two adjacent sides of the inner rotary ring, and the blockage caused by the accumulation of a large number of attachments on the surfaces of the heat transfer plates after the heat transfer plates are used for a long time can be effectively prevented; and the cleaning work is to automatically clean the heat transfer plate when the rotary air preheater works, and the cleaning work does not need manual cleaning.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the inner swivel and the outer swivel of the present invention.

Fig. 3 is a schematic cross-sectional view of the first sliding plate and the second sliding plate according to the present invention.

The meaning of the reference symbols in the figures is: 1. a housing; 10. a top beam; 11. a bottom beam; 20. an inner swivel; 21. an outer swivel; 22. a heat transfer plate; 23. a turntable; 3. a motor; 4. scraping the material; 40. a substrate; 41. a first sliding plate; 42. a second sliding plate; 43. a first pressure spring; 44. a second pressure spring; 50. a reciprocating screw rod; 51. a guide bar; 52. a first bevel gear; 53. a second bevel gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a technical scheme that:

a system for preventing attachments in a rotary air preheater is disclosed, please refer to fig. 1-2, which comprises a housing 1 with an opening at the top and the bottom, an outer rotary ring 21 and an inner rotary ring 20 are rotatably connected in the housing 1, the inner rotary ring 20 is located at the center of the outer rotary ring 21, a plurality of heat transfer plates 22 are fixedly connected between the outer rotary ring 21 and the inner rotary ring 20, one end of each heat transfer plate 22 is fixedly connected with the outer wall of the inner rotary ring 20 through a bolt, and the other end of each heat transfer plate 22 is fixedly connected with the inner wall of the outer rotary ring 21 through a bolt.

Referring to fig. 1-2, the distance between two adjacent heat transfer plates 22 decreases from outer rotary ring 21 to inner rotary ring 20.

Referring to fig. 1, the electric vehicle further comprises a motor 3 for driving an inner rotating ring 20 to rotate, a top beam 10 is fixedly installed at the top of the outer shell 1, the motor 3 is fixedly installed at the top of the top beam 10 through bolts, a rotating disc 23 is fixedly connected to the top of the inner rotating ring 20, and the end of an output shaft of the motor 3 is fixedly connected with the rotating disc 23; the motor 3 is started to operate, and the turntable 23 is driven to rotate, so that the inner rotary ring 20 and the outer rotary ring 21 are driven to rotate.

Referring to fig. 2, a scraping member 4 is disposed between two adjacent heat transfer plates 22, and a driving mechanism for driving the scraping member 4 to clean the two adjacent heat transfer plates 22 is further included; when the motor 3 drives the inner rotary ring 20 to rotate, the driving mechanism works.

Referring to fig. 2-3, the scraping member 4 includes a base plate 40, two first sliding plates 41 and two second sliding plates 42, wherein a first sliding slot is formed on one side of the first sliding plate 41 close to the base plate 40, and a second sliding slot is formed on one side of the second sliding plate 42 close to the first sliding plate 41; the two first sliding plates 41 are respectively sleeved on two sides of the base plate 40 in a sliding manner, and two sides of the base plate 40 are respectively arranged in the two first sliding grooves of the two first sliding plates 41 in a sliding manner; the second sliding plate 42 is slidably sleeved on one side of the first sliding plate 41 away from the base plate 40, and one side of the first sliding plate 41 away from the base plate 40 is slidably arranged in the second sliding chute; the side of the second slide plate 42 remote from the first slide plate 41 abuts against the heat transfer plate 22; one side of the second sliding plate 42, which is away from the first sliding plate 41, is always abutted against the heat transfer plate 22, so that when the second sliding plate 42 moves, the attachments on the heat transfer plate 22 can be scraped off, and the heat transfer effect of the heat transfer plate 22 is prevented from being influenced by the attachments accumulated on the heat transfer plate 22.

Referring to fig. 3, a first compression spring 43 is disposed in the first sliding chute, two ends of the first compression spring 43 are respectively and fixedly connected with the base plate 40 and the first sliding plate 41, a second compression spring 44 is disposed in the second sliding chute, and two ends of the second compression spring 44 are respectively and fixedly connected with the first sliding plate 41 and the second sliding plate 42; when the scraper 4 moves toward the side of the inner rotary ring 20, the second sliding plate 42 and the first sliding plate both move toward the side of the base plate 40, and at this time, the first compression spring 43 and the second compression spring 44 continue to be compressed, so that the entire length of the scraper 4 becomes short; when the scraper 4 moves toward the side of the outer rotary ring 21, the second sliding plate 42 and the first sliding plate both move toward the side away from the base plate 40, so that the entire length of the scraper 4 becomes long; the distance between the adjacent two heat transfer plates 22 can be effectively adapted, and the practicality of the apparatus is greatly improved.

Referring to fig. 2-3, the driving mechanism includes a reciprocating screw rod 50 rotatably installed between the inner rotary ring 20 and the outer rotary ring 21 and a guide rod 51 fixedly connected between the inner rotary ring 20 and the outer rotary ring 21, the substrate 40 is slidably connected to the guide rod 51 and is in threaded connection with the reciprocating screw rod 50, one end of the reciprocating screw rod 50 away from the outer rotary ring 21 extends into the inner rotary ring 20 and is fixedly connected with a first bevel gear 52, a second bevel gear 53 engaged with the first bevel gear 52 is further arranged inside the inner rotary ring 20, a bottom beam 11 is fixedly connected to the bottom of the housing 1, and the bottom of the second bevel gear 53 is fixedly connected to the bottom beam 11.

When the rotary air preheater works, the motor 3 is in a starting state, and drives the inner rotary ring 20 and the outer rotary ring 21 to rotate, so that the reciprocating screw rod 50 and the first bevel gear 52 can be driven to synchronously rotate along with the inner rotary ring 20, and the first bevel gear 52 is meshed with the second bevel gear 53, so that the first bevel gear 52 can walk on the second bevel gear 53, the first bevel gear 52 can be driven to rotate, the reciprocating screw rod 50 can be driven to rotate, the base plate 40 can be driven to do reciprocating linear motion on the reciprocating screw rod 50, and the first sliding plate and the second sliding plate can be driven to do reciprocating linear motion on the reciprocating screw rod 50, so that attachments on the surface of the heat transfer plate can be effectively cleaned; the cleaning work is automatically performed when the rotary air preheater works, and manual cleaning is not needed.

It should be added that the driving mechanism of the present invention works to drive the inner rotary ring 20 and the outer rotary ring 21, and can directly depend on the motor of the rotary air preheater to drive the rotary air preheater, and does not need an external driving source, and belongs to a self-driving mode, which is more economical; greatly improving the practicability of the device.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a system for be used for preventing attachment jam in rotary air preheater, includes top and the open shell (1) in bottom all, shell (1) internal rotation is connected with outer change (21) and interior change (20), and interior change (20) are located the central point of outer change (21) and are put, and a plurality of heat transfer plates (22) of fixedly connected with between outer change (21) and interior change (20), still including being used for driving interior change (20) pivoted motor (3), its characterized in that: a material scraping part (4) is arranged between every two adjacent heat transfer plates (22), and the heat exchanger further comprises a driving mechanism for driving the material scraping part (4) to clean the two adjacent heat transfer plates (22); when the motor (3) drives the inner rotating ring (20) to rotate, the driving mechanism works.

2. The system of claim 1, wherein the system comprises: the top fixed mounting of shell (1) has back timber (10), and motor (3) fixed mounting is on back timber (10), and inner rotating ring (20) top fixedly connected with carousel (23), the output shaft tip and carousel (23) fixed connection of motor (3).

3. The system of claim 1, wherein the system comprises: the material scraping part (4) comprises a base plate (40), two first sliding plates (41) and two second sliding plates (42), the two first sliding plates (41) are respectively sleeved on two sides of the base plate (40) in a sliding mode, and the second sliding plates (42) are sleeved on one sides, far away from the base plate (40), of the first sliding plates (41) in a sliding mode; the side of the second slide plate (42) remote from the first slide plate (41) abuts against the heat transfer plate (22).

4. A system for preventing fouling in a rotary air preheater according to claim 3, wherein: a first sliding groove is formed in one side, close to the base plate (40), of the first sliding plate (41), and a second sliding groove is formed in one side, close to the first sliding plate (41), of the second sliding plate (42); be equipped with first pressure spring (43) in the first spout, the both ends of first pressure spring (43) respectively with base plate (40) and first sliding plate (41) fixed connection, be equipped with second pressure spring (44) in the second spout, the both ends of second pressure spring (44) respectively with first sliding plate (41) and second sliding plate (42) fixed connection.

5. The system for preventing fouling in a rotary air preheater as set forth in claim 4, wherein: the driving mechanism comprises a reciprocating screw rod (50) rotatably installed between an inner rotating ring (20) and an outer rotating ring (21) and a guide rod (51) fixedly connected between the inner rotating ring (20) and the outer rotating ring (21), a substrate (40) is slidably connected onto the guide rod (51) and is in threaded connection with the reciprocating screw rod (50), one end, far away from the outer rotating ring (21), of the reciprocating screw rod (50) extends into the inner rotating ring (20) and is fixedly connected with a first bevel gear (52), a second bevel gear (53) meshed with the first bevel gear (52) is further arranged inside the inner rotating ring (20), the bottom of the shell (1) is fixedly connected with a bottom beam (11), and the bottom of the second bevel gear (53) is fixedly connected onto the bottom beam (11).