Sealing device for air preheater

Abstract

The invention relates to the technical field of preheaters, in particular to a sealing device for an air preheater, two sides of a heat conduction bin are fixedly connected with sealing side plates, the inner side of the heat conduction bin is fixedly connected with two supporting inner plates, the inner sides of the supporting inner plates are slidably connected with a scraping and discharging shell in a clamped mode, and the inner side of the scraping and discharging shell is fixedly connected with a heat conduction plate in a clamped mode. A mounting connecting plate is fixedly connected to the top of the scraping and discharging shell, a protective outer cylinder is fixedly connected to the side, away from the scraping and discharging shell, of the mounting connecting plate, a connecting inner shaft is fixedly connected to the outer side of the heat conduction bin, and the connecting inner shaft is slidably clamped to the inner side of the mounting connecting plate; the sealing device has the advantages of being simple in structure, convenient to operate and easy to maintain, by means of the description of the implementation mode, the sealing performance of equipment can be effectively improved when the sealing device is applied to the air preheater, damage of dust to the equipment is reduced, the service life of the equipment is prolonged, and the service life of the equipment is prolonged. And meanwhile, daily overhaul and maintenance work is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of preheaters, in particular to a sealing device for an air preheater. Background Art

[0002] An air preheater is a heat exchange device used to improve fuel combustion efficiency. It preheats the air entering the combustion chamber to reduce the combustion temperature of the fuel, thereby improving combustion efficiency.

[0003] In the prior art, the main disadvantages of plate preheaters and other air preheaters are poor sealing effects, which lead to reduced thermal efficiency and easy environmental pollution. However, plate preheaters are convenient for daily maintenance and cleaning, and have better corrosion resistance and wear resistance. Using plate preheaters with good sealing can achieve higher heat exchange efficiency. To this end, the present invention provides a sealing device for an air preheater. Summary of the invention

[0004] The object of the present invention is to provide a sealing device for an air preheater to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is: a sealing device for an air preheater, comprising a heat conduction bin and a sealing side plate, the two sides of the heat conduction bin are fixedly connected with the sealing side plates, the inner side of the heat conduction bin is fixedly connected with two supporting inner plates, the inner side of the supporting inner plates is slidably connected with a scraper shell, the inner side of the scraper shell is fixedly connected with a heat conduction plate, the top of the scraper shell is fixedly connected with a mounting connection plate, the side of the mounting connection plate is fixedly connected with a scraper handle, the side of the mounting connection plate away from the scraper shell is fixedly connected with a protective outer cylinder, the outer side of the heat conduction bin is fixedly connected with a connecting inner shaft, The connecting inner shaft is slidably connected to the inner side of the mounting connecting plate, the mounting connecting plate is fixedly connected to a limiting pressure ring away from the top of the heat conduction bin, the limiting pressure ring is slidably connected to the inner side of the protective outer cylinder, a limiting spring is installed between the mounting connecting plate and the limiting pressure ring, an adjustment groove is provided on the inner side of the supporting inner plate, an adjustment pressure block is slidably connected to the inner side of the adjusting groove, one side of the adjustment pressure block is fixedly connected to an adjustment spring, the adjustment spring is installed inside the adjusting groove, a fixing groove is provided on the top of the supporting inner plate, a fixing pressure plate is rotatably connected to the inner side of the fixing groove, and the outer side of the fixing pressure plate A pressure plate shaft is fixedly connected, and the pressure plate shaft is slidably engaged with the inside of the fixed groove. The inner side of the heat conduction bin is fixedly connected with a limit card plate, and the outer side of the heat conduction plate is movably sleeved with a sealing plug block, and the sealing plug block is slidably engaged with the inner side of the limit card plate. When in use: the exhaust gas enters the interior of the heat conduction bin by connecting the air inlet with the exhaust gas outlet, and one end of the heat conduction plate is fixedly installed in the air inlet bin, so that the exhaust gas heats the outer side of the heat conduction plate, and the heat is introduced into the air inlet bin to heat the air. The sealing side plate inside the heat conduction bin is sealed by the sealing plug block, and the heat conduction plate and the scraper shell are connected. Sliding card connection, when dust accumulates on the outer side of the heat transfer plate, by pulling the scraper handle, the installation connecting plate and the scraper shell are moved a certain distance toward the connecting inner shaft, and the scraper shell is moved along the outer side of the heat transfer plate to scrape the outer side of the heat transfer plate to scrape off the external dust to avoid affecting the heat transfer efficiency, and the limit pressure ring slides along the inside of the protective outer cylinder to squeeze the limit spring, and then the scraper handle is pulled to reset the scraper shell. When the scraper shell expands due to heat, the adjustment spring inside the supporting inner plate is adaptively compressed to make the scraper shell have a certain expansion and extrusion distance. At this time, the limit spring can also play a certain adjustment effect.

[0006] Preferably, the top of the heat transfer bin is fixedly connected with a strip board, the top of the strip board is provided with an inclined mounting groove, the inner side of the strip board is movably connected with a sealing top plate, both sides of the sealing top plate are provided with sliding blocks of the same shape as the inclined mounting groove, the side of the strip board is rotatably connected with a fixed shaft, the outer side of the fixed shaft is fixedly connected with a fixed baffle, the side of the strip board is fixedly connected with a limited bottom block, the limited bottom block is located at the bottom of the fixed baffle, one side of the heat transfer bin is fixedly connected with an air inlet, the air inlet is communicated with the interior of the heat transfer bin, a single purification mesh plate is installed on the inner side wall of the heat transfer bin adjacent to the air inlet, the side of the heat transfer bin away from the air inlet is fixedly connected with an exhaust port, the inner side wall of the heat transfer bin adjacent to the exhaust port is installed with a double purification mesh plate, the bottom of the heat transfer bin is fixedly connected with a drainage support box, the The bottom inner wall of the heat bin is slidably connected with a water-conducting sealing plate; when in use: a first-level purification mesh plate is installed at the exhaust gas inlet, which has a certain purification effect and prevents excessive dust from entering the interior of the heat conduction bin. By setting a sealing top plate and a plug-in board, the sealing top plate can slide into the inner side of the plug-in board to fix the top of the sealed heat conduction bin, fix the pressure plate shaft, fix the internal device, rotate the fixed baffle, fix one end of the sealing top plate, so that the sealing top plate cannot slide, and the sealing top plate can be quickly removed by rotating the fixed baffle, and the interior of the heat conduction bin can be quickly inspected and maintained, and the second-level purification mesh plate is further installed to purify the air to prevent excessive dust and other substances from being discharged from the exhaust port to pollute the environment. The internal structure is removed, and the water-conducting sealing plate is removed, so that the device can be quickly cleaned to discharge waste water, and the first-level purification mesh plate and the second-level purification mesh plate can also be quickly replaced.

[0007] The present invention provides a sealing device for an air preheater through improvement, which has the following improvements and advantages compared with the prior art:

[0008] The heat transfer device of the present invention is a kind of sealing device for air preheater, by connecting the air inlet with the exhaust air outlet, allowing the exhaust air to enter the interior of the heat transfer chamber, and making one end of the heat transfer plate fixedly installed in the air inlet chamber, so that the exhaust gas heats the outer side of the heat transfer plate, and the heat is introduced into the air into the chamber to heat the air, and the sealing side plate inside the heat transfer chamber is sealed by the sealing plug block, and at the same time, the heat transfer plate and the scraper shell are slidably engaged with each other. When dust accumulates on the outer side of the heat transfer plate, the scraper shell is moved a certain distance toward the connecting inner shaft by pulling the scraper handle, so that the scraper shell moves along the outer side of the heat transfer plate, and the outer side of the heat transfer plate is scraped to scrape off the external dust to avoid affecting the heat transfer efficiency, and the limit pressure ring slides along the inside of the protective outer cylinder to squeeze the limit spring, and then the scraper handle is pulled to reset the scraper shell, and when the scraper shell expands due to heat, the adjustment spring inside the supporting inner plate is adaptively compressed, so that the scraper shell has a certain expansion and extrusion distance, and the limit spring can also play a certain adjustment effect at this time;

[0009] Second, the sealing device for an air preheater described in the present invention improves the installation of a purification mesh plate at the exhaust gas inlet, has a certain purification effect, and prevents excessive dust from entering the interior of the heat transfer bin. By setting a sealing top plate and a plug-in board, the sealing top plate can slide into the inner side of the plug-in board to fix the top of the sealed heat transfer bin, fix the pressure plate shaft, fix the internal device, rotate the fixed baffle, fix one end of the sealing top plate, so that the sealing top plate cannot slide, and only needs to rotate the fixed baffle to quickly remove the sealing top plate, and quickly inspect and maintain the interior of the heat transfer bin, improve the double purification mesh plate to further purify the air, and prevent the exhaust port from discharging too much dust and other substances to pollute the environment, improve the removal of the internal structure, remove the water guide sealing plate, and quickly clean the device to discharge wastewater, and quickly replace the single purification mesh plate and the double purification mesh plate;

[0010] Summary: The sealing device for an air preheater described in the present invention has the characteristics of simple structure, easy operation and easy maintenance. Through the description of the above implementation mode, it can be seen that the application of the sealing device in the air preheater can effectively improve the sealing performance of the equipment, reduce the damage of dust to the equipment, and facilitate daily inspection and maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 It is a schematic diagram of the heat transfer chamber structure of the present invention;

[0014] Figure 3 It is a schematic diagram of the structure of the mounting connection plate of the present invention;

[0015] Figure 4 It is a schematic diagram of the structure of the heat conducting plate of the present invention;

[0016] Figure 5 It is a schematic diagram of the supporting inner plate structure of the present invention;

[0017] Figure 6 It is a schematic diagram of the structure of the drainage support box of the present invention;

[0018] Figure 7 It is a schematic diagram of the sealing top plate structure of the present invention;

[0019] Description of reference numerals:

[0020] 1. Heat transfer chamber; 2. Sealing side plate; 3. Drainage support box; 4. Air inlet; 5. Sealing top plate; 6. Support inner plate; 7. Install connecting plate; 8. Scraper handle; 9. Protective outer cylinder; 10. Connecting inner shaft; 11. Limiting pressure ring; 12. Limiting spring; 13. Scraper shell; 14. Heat transfer plate; 15. Sealing plug-in block; 16. Adjustment spring; 17. Adjustment pressure block; 18. Fixed pressure plate; 19. Pressure plate shaft; 20. First-stage purification mesh plate; 21. Second-stage purification mesh plate; 22. Limiting card plate; 23. Water guide sealing plate; 24. Exhaust port; 25. Plug-in board; 26. Fixed shaft; 27. Limiting bottom block; 28. Fixed baffle. DETAILED DESCRIPTION

[0021] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides a sealing device for an air preheater through improvement. The technical solution of the present invention is:

[0023] like Figure 1-Figure 7As shown, a sealing device for an air preheater comprises a heat transfer chamber 1 and a sealing side plate 2. The sealing side plates 2 are fixedly connected to both sides of the heat transfer chamber 1. Two supporting inner plates 6 are fixedly connected to the inner side of the heat transfer chamber 1. A scraper housing 13 is slidably clamped on the inner side of the supporting inner plate 6. A heat transfer plate 14 is fixedly clamped on the inner side of the scraper housing 13. A mounting connecting plate 7 is fixedly connected to the top of the scraper housing 13. A protective outer cylinder 9 is fixedly connected to the side of the mounting connecting plate 7 away from the scraper housing 13. A connecting inner shaft 10 is fixedly connected to the outer side of the heat transfer chamber 1. The connecting inner shaft 10 is slidably clamped on the inner side of the mounting connecting plate 7. The side of the mounting connecting plate 7 is fixedly connected There is a scraper handle 8, the installation connecting plate 7 is fixedly connected to the top of the heat conduction bin 1 with a limit pressure ring 11, the limit pressure ring 11 is slidably clamped on the inner side of the protective outer cylinder 9, and a limit spring 12 is installed between the installation connecting plate 7 and the limit pressure ring 11. An adjustment groove is provided on the inner side of the support inner plate 6, and an adjustment pressure block 17 is slidably clamped on the inner side of the adjustment groove. One side of the adjustment pressure block 17 is fixedly connected with an adjustment spring 16, and the adjustment spring 16 is installed inside the adjustment groove. A fixed groove is provided on the top of the support inner plate 6, and a fixed pressure plate 18 is rotatably connected to the inner side of the fixed groove, and a pressure plate rotating shaft 19 is fixedly connected to the outer side of the fixed pressure plate 18. The pressure plate rotating shaft 19 The heat conducting bin 1 is slidably engaged with the inner side of the fixed groove, the inner side of the heat conducting bin 1 is fixedly connected with the limit card plate 22, the outer side of the heat conducting plate 14 is movably sleeved with a sealing plug 15, and the sealing plug 15 is slidably engaged with the inner side of the limit card plate 22; when in use: the air inlet 4 is connected with the exhaust port to allow the exhaust gas to enter the interior of the heat conducting bin 1, and one end of the heat conducting plate 14 is fixedly installed in the air inlet bin, so that the exhaust gas heats the outer side of the heat conducting plate 14, and the heat is introduced into the air inlet bin to heat the air, and the sealing side plate 2 inside the heat conducting bin 1 is sealed by the sealing plug 15, and at the same time, the heat conducting plate 14 is slidably engaged with the scraper housing 13, when the outer side of the heat conducting plate 14 When dust accumulates, by pulling the scraper handle 8, the installation connecting plate 7 and the scraper housing 13 are moved a certain distance toward the connecting inner shaft 10, and the scraper housing 13 is moved along the outer side of the heat conducting plate 14 to scrape the outer side of the heat conducting plate 14 to scrape off the external dust to avoid affecting the heat transfer efficiency. The limiting pressure ring 11 slides along the inside of the protective outer tube 9 to squeeze the limiting spring 12, and then the scraper handle 8 is pulled to reset the scraper housing 13. When the scraper housing 13 expands due to heat, the adjustment spring 16 inside the supporting inner plate 6 is adaptively compressed to make the scraper housing 13 have a certain expansion and extrusion distance. At this time, the limiting spring 12 can also play a certain adjustment effect.

[0024] Furthermore, a strip board 25 is fixedly connected to the top of the heat transfer bin 1, and an inclined mounting groove is provided on the top of the strip board 25. A sealing top plate 5 is movably connected to the inner side of the strip board 25, and sliders of the same shape as the inclined mounting groove are provided on both sides of the sealing top plate 5. A fixed shaft 26 is rotatably connected to the side of the strip board 25, and a fixed baffle 28 is fixedly connected to the outer side of the fixed shaft 26. A limited bottom block 27 is fixedly connected to the side of the strip board 25, and the limited bottom block 27 is located at the bottom of the fixed baffle 28. An air inlet 4 is fixedly connected to one side of the heat transfer bin 1, and the air inlet 4 is connected to the inside of the heat transfer bin 1. A single purification mesh plate 20 is installed on the inner side wall of the heat transfer bin 1 adjacent to the air inlet 4, and an exhaust port 24 is fixedly connected to the side of the heat transfer bin 1 away from the air inlet 4. A double purification mesh plate 21 is installed on the inner side wall of the heat transfer bin 1 adjacent to the exhaust port 24. A drainage support box 3 is fixedly connected to the bottom of the heat transfer bin 1. The wall is slidably connected with a water-conducting sealing plate 23; when in use: a first-level purification mesh plate 20 is installed at the exhaust gas inlet, which has a certain purification effect and prevents excessive dust from entering the interior of the heat transfer bin 1. By setting the sealing top plate 5 and the plug-in plate 25, the sealing top plate 5 can slide into the inner side of the plug-in plate 25 to fix the top of the sealed heat transfer bin 1, so that the pressure plate shaft 19 is fixed to fix the internal device, and the fixed baffle 28 is rotated to fix one end of the sealing top plate 5 so that the sealing top plate 5 cannot slide. Only the fixed baffle 28 needs to be rotated to quickly remove the sealing top plate 5, and the interior of the heat transfer bin 1 can be quickly repaired and maintained, and the second-level purification mesh plate 21 is improved to further purify the air and prevent the exhaust port 24 from discharging too much dust and other substances to pollute the environment. The internal structure is removed, and the water-conducting sealing plate 23 is removed, so that the device can be quickly cleaned to discharge waste water, and the first-level purification mesh plate 20 and the second-level purification mesh plate 21 can also be quickly replaced.

[0025] Working principle: When in use: connect the air inlet 4 with the exhaust port to allow the exhaust gas to enter the interior of the heat conduction chamber 1, and fix one end of the heat conduction plate 14 to the air inlet chamber, so that the exhaust gas heats the outside of the heat conduction plate 14, and introduces the heat into the air inlet chamber to heat the air. The sealing side plate 2 inside the heat conduction chamber 1 is sealed by the sealing plug 15, and the heat conduction plate 14 is slidably engaged with the scraper housing 13. When dust accumulates on the outside of the heat conduction plate 14, the scraper handle 8 is pulled to make the installation The connecting plate 7 and the scraper housing 13 move a certain distance toward the connecting inner shaft 10, so that the scraper housing 13 moves along the outer side of the heat conducting plate 14, so that the outer side of the heat conducting plate 14 is scraped to scrape off the external dust to avoid affecting the heat transfer efficiency, so that the limit pressure ring 11 slides along the inside of the protective outer cylinder 9, squeezes the limit spring 12, and then pulls the scraper handle 8 to reset the scraper housing 13. When the scraper housing 13 expands due to heat, the adjustment spring 16 inside the supporting inner plate 6 is adaptively compressed to make the scraper outer The shell 13 has a certain expansion and extrusion distance. At this time, the limit spring 12 can also play a certain adjustment effect, and the installation of a single-stage purification mesh plate 20 at the exhaust gas inlet has a certain purification effect, which prevents too much dust from entering the interior of the heat transfer bin 1. By setting the sealing top plate 5 and the plug-in plate 25, the sealing top plate 5 can slide into the inner side of the plug-in plate 25 to fix the top of the sealed heat transfer bin 1, so that the pressure plate shaft 19 is fixed, the internal device is fixed, and the fixed baffle 28 is rotated to fix one end of the sealing top plate 5 so that the sealing top plate 5 cannot slide. Only by rotating the fixed baffle 28, the sealing top plate 5 can be quickly taken out, and the interior of the heat transfer bin 1 can be quickly repaired and maintained, and the double-stage purification mesh plate 21 is improved to further purify the air, and the exhaust port 24 is prevented from discharging too much dust and other substances to pollute the environment. The internal structure is improved and the water-conducting sealing plate 23 is taken out, so that the device can be quickly cleaned to discharge waste water, and the single-stage purification mesh plate 20 and the double-stage purification mesh plate 21 can also be quickly replaced.

[0026] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealing device for an air preheater, comprising a heat transfer chamber (1) and a sealing side plate (2), characterized in that: The two sides of the heat transfer bin (1) are fixedly connected with sealing side plates (2), the inner side of the heat transfer bin (1) is fixedly connected with two supporting inner plates (6), the inner side of the supporting inner plates (6) is slidably connected with a scraper outer shell (13), the inner side of the scraper outer shell (13) is fixedly connected with a heat transfer plate (14), the top of the scraper outer shell (13) is fixedly connected with a mounting connection plate (7), the side of the mounting connection plate (7) is fixedly connected with a scraper handle (8), and the mounting connection plate (7) is away from the scraper outer shell. A protective outer cylinder (9) is fixedly connected to one side of the shell (13); a connecting inner shaft (10) is fixedly connected to the outer side of the heat-conducting bin (1); the connecting inner shaft (10) is slidably engaged with the inner side of the mounting connecting plate (7); a limiting pressure ring (11) is fixedly connected to the top of the mounting connecting plate (7) away from the heat-conducting bin (1); the limiting pressure ring (11) is slidably engaged with the inner side of the protective outer cylinder (9); a limiting spring (12) is installed between the mounting connecting plate (7) and the limiting pressure ring (11).

2. The sealing device for an air preheater according to claim 1, characterized in that: An adjustment groove is provided on the inner side of the support inner plate (6), and an adjustment pressure block (17) is slidably engaged with the inner side of the adjustment groove. An adjustment spring (16) is fixedly connected to one side of the adjustment pressure block (17), and the adjustment spring (16) is installed inside the adjustment groove. A fixing groove is provided on the top of the support inner plate (6), and a fixed pressure plate (18) is rotatably connected to the inner side of the fixing groove. A pressure plate rotating shaft (19) is fixedly connected to the outer side of the fixed pressure plate (18), and the pressure plate rotating shaft (19) is slidably engaged with the inside of the fixing groove.

3. The sealing device for an air preheater according to claim 2, characterized in that: The inner side of the heat transfer chamber (1) is fixedly connected to a limit clamping plate (22), the outer side of the heat transfer plate (14) is movably sleeved with a sealing plug-in block (15), and the sealing plug-in block (15) is slidably clamped to the inner side of the limit clamping plate (22).

4. The sealing device for an air preheater according to claim 3, characterized in that: The top of the heat transfer chamber (1) is fixedly connected with an insertion board (25), the top of the insertion board (25) is provided with an inclined mounting groove, the inner side of the insertion board (25) is movably connected with a sealing top plate (5), and both sides of the sealing top plate (5) are provided with sliding blocks of the same shape as the inclined mounting groove.

5. The sealing device for an air preheater according to claim 4, characterized in that: The side of the strip board (25) is rotatably connected to a fixed shaft (26), the outer side of the fixed shaft (26) is fixedly connected to a fixed baffle (28), and the side of the strip board (25) is fixedly connected to a limiting bottom block (27), and the limiting bottom block (27) is located at the bottom of the fixed baffle (28).

6. The sealing device for an air preheater according to claim 5, characterized in that: An air inlet (4) is fixedly connected to one side of the heat transfer chamber (1), the air inlet (4) is communicated with the interior of the heat transfer chamber (1), a single purification mesh plate (20) is installed on the inner side wall of the heat transfer chamber (1) adjacent to the air inlet (4), an exhaust port (24) is fixedly connected to the side of the heat transfer chamber (1) away from the air inlet (4), and a double purification mesh plate (21) is installed on the inner side wall of the heat transfer chamber (1) adjacent to the exhaust port (24).

7. The sealing device for an air preheater according to claim 6, characterized in that: The bottom of the heat-conducting bin (1) is fixedly connected to a drainage support box (3), and the inner wall of the bottom of the heat-conducting bin (1) is slidably engaged with a water-conducting sealing plate (23).

Images