Rotary air preheater with anti-blocking effect

Abstract

The utility model relates to the technical field of coal-fired boiler equipment, and discloses a rotary air preheater with an anti-blocking effect, which comprises a preheater main body and a fixed block, a soot blowing mechanism is fixedly connected in the fixed block, and an adjusting mechanism is fixedly connected at the top of the preheater main body; and the soot blowing mechanism comprises a first motor, the exterior of the first motor is fixedly connected to the interior of the fixing block, the driving end of the first motor is fixedly connected with a rotating disc, the right side of the rotating disc is fixedly connected with a convex rod, the exterior of the convex rod is rotationally connected with a transmission plate, and the top of the transmission plate is rotationally connected with a concave sliding block. Air sprayed out of the air outlet is more comprehensive, the filter screen of the air inlet can prevent large-particle impurities from entering, dust accumulation sources are reduced, dust can be removed more efficiently, the preheater is effectively prevented from being blocked, normal operation and heat exchange efficiency of the preheater are guaranteed, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal -fired boiler equipment technical field especially relates to a rotatory air preheater with prevent effect of blockage. BACKGROUND

[0002] Air preheater is a kind of equipment for improving the heat exchange performance of boiler, reduce energy consumption, mainly used to preheat the air before entering the boiler to a certain temperature it passes through the heat of flue gas in the tail of boiler, through the internal heat sink or heat storage element, heat is transferred to air.

[0003] Common in coal-fired power plant boiler, can be divided into tube type, plate type and rotatory three types of air preheater.The rotatory air preheater is the most widely used, which realizes the heat transfer by the rotation of rotor.

[0004] In the prior art, the cleaning mode of part of rotatory air preheater often cannot realize all-round cleaning, some corners and difficult-to-reach areas are easily neglected, and dust is accumulated in these parts for a long time.Dust may contain corrosive substances, which gradually corrodes the metal structure of the equipment when contacting with the parts of preheater for a long time.At the same time, the accumulation of dust increases the friction resistance between parts and other adverse effects, accelerates the wear of the equipment, greatly shortens the service life of the equipment, increases the equipment replacement and maintenance cost of enterprise, and therefore a rotatory air preheater with prevent effect of blockage is proposed to solve the above problems. CONTENT OF UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides a rotatory air preheater with prevent effect of blockage, which aims at improving the problem that part of rotatory air preheater in prior art is difficult to realize all-round cleaning and thus shortens the service life of equipment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A rotatory air preheater with prevent effect of blockage, including preheater main part and fixed block, the inside fixed connection of fixed block has soot blowing mechanism, the top of preheater main part is connected with adjusting mechanism,

[0008] The soot blowing mechanism includes a motor, which is externally and fixedly connected to the inside of the fixed block. A rotating disk is fixedly connected to the drive end of the motor. A protruding rod is fixedly connected to the right side of the rotating disk. A transmission plate is rotatably connected to the outside of the protruding rod. A concave slider is rotatably connected to the top of the transmission plate. A U-shaped frame is fixedly connected to the front and rear sides of the concave slider. A rotating ring is rotatably connected to the top outer wall of the U-shaped frame. A concave plate is fixedly connected to the right side of the fixed block. A rotating plate is rotatably connected to the inside of the concave plate. A fan is fixedly connected to the left side of the fixed block.

[0009] As a further description of the above technical solution:

[0010] The adjustment mechanism includes a top inspection platform, the bottom of which is fixedly connected to the top of the preheater body. An electric slide rail is fixedly connected to the top of the top inspection platform. A sliding block is slidably connected to the top of the electric slide rail. A square plate is fixedly connected to the top of the sliding block. A second motor is fixedly connected to the top of the square plate. A small gear is fixedly connected to the drive end of the second motor. A rotating rod is rotatably connected inside the square plate. A large gear is fixedly connected to the outside of the rotating rod. A transmission circular plate is fixedly connected to the top of the rotating rod.

[0011] As a further description of the above technical solution:

[0012] An I-shaped block is fixedly connected to the inner wall of the fixed block, and the outer wall of the concave slider is slidably connected to the inner wall of the I-shaped block.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the U-shaped frame is slidably connected to the inner wall of the rotating plate, and a groove is provided inside the rotating plate. The outer wall of the rotating ring is slidably connected to the inner wall of the groove.

[0015] As a further description of the above technical solution:

[0016] An air inlet is fixedly connected to the left side of the fan, a transmission pipe is fixedly connected to the top of the fan, and an air outlet is fixedly connected to the output end of the transmission pipe.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the air inlet is equipped with a filter screen, and the bottom end of the transmission pipe is fixedly connected to the top end of the rotating plate.

[0019] As a further description of the above technical solution:

[0020] The outer side of the large gear is meshed with the outer side of the small gear, and the bottom side of the small gear is rotatably connected to the bottom inner wall of the square plate.

[0021] As a further description of the above technical solution:

[0022] The bottom end of the fixed block is fixedly connected to the top end of the transmission circular plate, and the bottom end of the transmission circular plate is rotatably connected to the top end of the square plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the fan generates power to agitate the airflow, causing air to be ejected from the air inlet through the transmission pipe and out of the air outlet, blowing away dust. At the same time, the motor drives the rotating disk to rotate. Through a series of transmission structures such as the convex rod, transmission plate, concave slider, U-shaped frame, rotating ring and rotating plate, the rotating plate drives the transmission pipe to rotate, allowing the air ejected from the air outlet to be more comprehensive. The filter screen at the air inlet can prevent large particles of impurities from entering, reducing the source of dust accumulation, so that dust can be removed more efficiently, effectively preventing the preheater from clogging, ensuring the normal operation of the preheater and the heat exchange efficiency, and increasing the service life of the equipment.

[0025] 2. In this utility model, the motor in the adjustment mechanism drives the small gear to rotate. The small gear meshes with the large gear to drive the rotating rod to rotate, which in turn drives the circular plate to rotate and drives the fixed block to rotate. This allows the soot blowing mechanism to clean the preheater from all directions. In addition, the electric slide rail and the sliding block work together to adjust the position of the square plate, ensuring that dust in every corner of the preheater can be cleaned, reducing the corrosion and wear of the preheater by dust, thereby extending the service life of the equipment. Attached Figure Description

[0026] Figure 1 This is a perspective view of a rotary air preheater with anti-clogging effect proposed in this utility model;

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of a square plate in a rotary air preheater with anti-clogging effect proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the structure of the fixing block of a rotary air preheater with anti-clogging effect proposed in this utility model.

[0030] Legend:

[0031] 1. Preheater body; 2. Top inspection platform; 3. Electric slide rail; 4. Sliding block; 5. Square plate; 6. Fixed block; 7. Motor 1; 8. Rotating disk; 9. Protruding rod; 10. Transmission plate; 11. Concave slider; 12. I-shaped block; 13. U-shaped frame; 14. Rotating ring; 15. Concave plate; 16. Rotating plate; 17. Fan; 18. Transmission pipe; 19. Motor 2; 20. Small gear; 21. Rotating rod; 22. Large gear; 23. Transmission circular plate. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a rotary air preheater with anti-clogging effect, comprising a preheater body 1 and a fixing block 6. The preheater body 1 is the core part of the entire rotary air preheater, serving as the heat exchange site and responsible for preheating the incoming air. A soot blowing mechanism is fixedly connected inside the fixing block 6, and an adjustment mechanism is fixedly connected to the top of the preheater body 1. The fixing block 6 provides a stable mounting base for the soot blowing mechanism, and its bottom is connected to the adjustment mechanism through a transmission structure, allowing its position to be adjusted under the action of the adjustment mechanism, thereby enabling the soot blowing mechanism to better clean the dust from the preheater body 1.

[0034] The soot blowing mechanism includes a motor 7, which is externally fixedly connected to the inside of a fixed block 6. A rotating disk 8 is fixedly connected to the drive end of the motor 7. The motor 7 is one of the power sources of the soot blowing mechanism, used to generate power to drive the rotating disk 8 to rotate. A protruding rod 9 is fixedly connected to the right side of the rotating disk 8. A transmission plate 10 is rotatably connected to the outside of the protruding rod 9. The rotation of the rotating disk 8 drives the protruding rod 9 to make a circular motion, thereby transmitting power to the transmission plate 10. A concave slider 11 is rotatably connected to the top of the transmission plate 10. The transmission plate 10 swings under the drive of the protruding rod 9, which plays the role of transmitting power and converting the motion form. The circular motion transmitted from the protruding rod 9 is converted into a force that drives the concave slider 11 to move up and down through the transmission plate 10. An I-shaped block 12 is fixedly connected to the inner wall of the fixed block 6. The outer wall of the concave slider 11 is slidably connected to the inner wall of the I-shaped block 12. The I-shaped block 12 provides a guiding function for the concave slider 11. A U-shaped frame 13 is fixedly connected to the front and rear sides of the concave slider 11. A rotating ring 14 is rotatably connected to the top outer wall of the U-shaped frame 13. A concave plate 15 is fixedly connected to the right side of the fixed block 6. A rotating plate 16 is rotatably connected inside the concave plate 15. The outer wall of the U-shaped frame 13 is slidably connected to the inner wall of the rotating plate 16. A groove is provided inside the rotating plate 16. The outer wall of the rotating ring 14 is slidably connected to the inner wall of the groove. The rotating ring 14 plays an auxiliary role in the rotation when the U-shaped frame 13 moves up and down, ensuring the smooth connection and relative movement between the U-shaped frame 13 and the rotating plate 16. The concave plate 15 provides a support point for the rotation of the rotating plate 16. A fan 17 is fixedly connected to the left side of the fixing block 6, and an air inlet is fixedly connected to the left side of the fan 17. A filter screen is installed on the inner wall of the air inlet. The air inlet is the entrance for air into the fan 17, and the filter screen on its inner wall can filter out large particles of impurities in the air, preventing these impurities from entering the fan 17 and the transmission pipe 18, thus avoiding damage to the fan 17. It also reduces the possibility of impurities accumulating in the preheater, contributing to the cleanliness of the preheater. A transmission pipe 18 is fixedly connected to the top of the fan 17, and an air outlet is fixedly connected to the output end of the transmission pipe 18. When the fan 17 is turned on, it generates power to agitate the airflow, driving the air from the air inlet through the transmission pipe 18 and finally out of the air outlet. The bottom end of the transmission tube 18 is fixedly connected to the top end of the rotating plate 16. The U-shaped frame 13 moves up and down under the drive of the concave slider 11, thereby driving the rotating plate 16 to rotate around the rotating shaft inside the concave plate 15, thereby changing the position of the transmission tube 18 so that the blown air can clean the dust more thoroughly.

[0035] Reference Figure 1 , Figure 2 and Figure 3The adjustment mechanism includes a top inspection platform 2, the bottom of which is fixedly connected to the top of the preheater body 1. The top inspection platform 2 provides a base for the installation of the adjustment mechanism and facilitates the inspection and maintenance of the preheater by the staff. An electric slide rail 3 is fixedly connected to the top of the top inspection platform 2, and a sliding block 4 is slidably connected to the top of the electric slide rail 3. The electric slide rail 3 provides the adjustment mechanism with the function of front and back adjustment through the sliding connection with the sliding block 4. A square plate 5 is fixedly connected to the top of the sliding block 4. A second motor 19 is fixedly connected to the top of the square plate 5. A small gear 20 is fixedly connected to the drive end of the second motor 19. The second motor 19 generates power to drive the small gear 20 to rotate. The bottom side of the small gear 20 is rotatably connected to the bottom inner wall of the square plate 5. A rotating rod 21 is rotatably connected inside the square plate 5. A large gear 22 is fixedly connected to the outside of the rotating rod 21. The outside of the large gear 22 is meshed with the outside of the small gear 20. The large gear 22 rotates under the rotation of the small gear 20, and the rotation of the large gear 22 drives the small gear 20 to rotate. The rotating rod 21 rotates, and the power is converted and amplified through this gear transmission method, providing sufficient power for the rotation of the fixed block 6. The top end of the rotating rod 21 is fixedly connected to the transmission circular plate 23, and the bottom end of the fixed block 6 is fixedly connected to the top end of the transmission circular plate 23. The bottom end of the transmission circular plate 23 is rotatably connected to the top of the square plate 5. The transmission circular plate 23 rotates under the drive of the rotating rod 21, thereby driving the fixed block 6 to rotate. The transmission circular plate 23 plays the role of connecting the rotating rod 21 and the fixed block 6, transmitting the rotational power of the rotating rod 21 to the fixed block 6, so that the soot blowing mechanism can clean the preheater in all directions.

[0036] Working principle: By turning on the fan 17 on the left side of the fixed block 6, the airflow is agitated and driven through the air inlet and transmission pipe 18, and finally sprayed out through the air outlet. The sprayed air blows off the dust on the air preheater to prevent blockage. At the same time, the motor 7 inside the fixed block 6 drives the rotating disk 8 to rotate. The rotation of the rotating disk 8, in conjunction with the connection of the convex rod 9, drives the transmission plate 10 to rotate. The rotation of the transmission plate 10, in conjunction with the guiding action of the I-shaped block 12 on the concave slider 11, drives the concave slider 11 to move up and down repeatedly. The up and down movement of the concave slider 11 drives the U-shaped frame 13 to move up and down. With the cooperation of the rotating ring 14 sliding in the groove inside the rotating plate 16, the up and down movement of the U-shaped frame 13 drives the rotating plate 16 to rotate around the rotating shaft inside the concave plate 15. Thus, the rotation of the rotating plate 16 drives the transmission pipe 18 to rotate, making the air sprayed out of the air outlet more comprehensive and increasing the dust removal efficiency.

[0037] By turning on the motor 19 on the square plate 5, power is generated to drive the small gear 20 to rotate. Since the small gear 20 and the large gear 22 are meshed, the rotation of the small gear 20 drives the large gear 22 to rotate, which in turn drives the rotating rod 21 to rotate. The rotation of the rotating rod 21 drives the transmission plate 23 to rotate, which in turn drives the fixed block 6 to rotate. In conjunction with the electric slide rail 3 and the sliding block 4, the position of the square plate 5 is adjusted back and forth, thereby achieving a comprehensive cleaning of the dust inside the air preheater.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary air preheater having a clogging prevention effect, comprising a preheater main body (1) and a fixing block (6), characterized in that: The inside of the fixed block (6) is fixedly connected with a soot blowing mechanism, and the top of the preheater body (1) is fixedly connected with an adjusting mechanism. The soot blowing mechanism comprises a motor one (7), the outside of the motor one (7) is fixedly connected with the inside of the fixed block (6), the driving end of the motor one (7) is fixedly connected with a rotating disc (8), the right side of the rotating disc (8) is fixedly connected with a convex rod (9), the outside of the convex rod (9) is rotatably connected with a transmission plate (10), the top of the transmission plate (10) is rotatably connected with a concave sliding block (11), the front and back sides of the concave sliding block (11) are fixedly connected with a U-shaped frame (13), the top outer wall of the U-shaped frame (13) is rotatably connected with a rotating ring (14), the right side of the fixed block (6) is fixedly connected with a concave plate (15), the inside of the concave plate (15) is rotatably connected with a rotating plate (16), and the left side of the fixed block (6) is fixedly connected with a fan (17).

2. A rotary air preheater having a clogging prevention effect according to claim 1, characterized in that: The adjusting mechanism comprises a top maintenance platform (2), the bottom of the top maintenance platform (2) is fixedly connected with the top of the preheater body (1), the top of the top maintenance platform (2) is fixedly connected with an electric sliding rail (3), the top of the electric sliding rail (3) is slidably connected with a sliding block (4), the top end of the sliding block (4) is fixedly connected with a square plate (5), the top of the square plate (5) is fixedly connected with a motor two (19), the driving end of the motor two (19) is fixedly connected with a small gear (20), the inside of the square plate (5) is rotatably connected with a rotating rod (21), the outside of the rotating rod (21) is fixedly connected with a large gear (22), and the top end of the rotating rod (21) is fixedly connected with a transmission circular plate (23).

3. A rotary air preheater having a clogging prevention effect according to claim 1, characterized in that: The inner wall of the fixed block (6) is fixedly connected with an I-shaped block (12), and the outer wall of the concave sliding block (11) is slidably connected with the inner wall of the I-shaped block (12).

4. A rotary air preheater having a clogging prevention effect according to claim 1, characterized in that: The outer wall of the U-shaped frame (13) is slidably connected with the inner wall of the rotating plate (16), the inside of the rotating plate (16) is provided with a sliding groove, and the outer wall of the rotating ring (14) is slidably connected with the inner wall of the sliding groove.

5. A rotary air preheater having a clogging prevention effect according to claim 1, characterized in that: The left side of the fan (17) is fixedly connected with an air inlet, the top of the fan (17) is fixedly connected with a transmission pipe (18), and the output end of the transmission pipe (18) is fixedly connected with an air outlet.

6. A rotary air preheater having a clogging prevention effect according to claim 5, characterized in that: The inner wall of the air inlet is provided with a filter screen, and the bottom end of the transmission pipe (18) is fixedly connected with the top end of the rotating plate (16).

7. A rotary air preheater having a clogging prevention effect according to claim 2, characterized in that: The outside of the large gear (22) is in meshing connection with the outside of the small gear (20), and the bottom side of the small gear (20) is rotatably connected with the bottom inner wall of the square plate (5).

8. A rotary air preheater having a clogging prevention effect according to claim 2, characterized in that: The bottom end of the fixed block (6) is fixedly connected with the top end of the transmission circular plate (23), and the bottom of the transmission circular plate (23) is rotatably connected with the top of the square plate (5).

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