Plate-type air preheater

Abstract

The utility model discloses a plate-type air preheater, which relates to the technical field of heat exchangers and comprises a shell, a plurality of heat exchange plates are mounted in the shell, one end of the shell is communicated with an air outlet pipe, the other end of the shell is communicated with a filter box, and one side, far away from the shell, of the filter box is fixedly connected and communicated with a smoke inlet pipe. A filter screen is fixedly connected into the fixing frame, a transverse adjusting assembly and a vertical adjusting assembly are arranged on the two sides of the filter screen correspondingly, the transverse adjusting assembly and the vertical adjusting assembly are slidably connected with the fixing frame correspondingly and are in transmission connection with a driving assembly correspondingly, a sealing plate is attached to the outer side of the filter box, and the sealing plate is fixedly connected with the fixing frame; one end of the driving assembly extends out of the filter box and penetrates through the sealing plate. The air purifier is simple in structure, convenient to use, capable of adjusting the filter screen, capable of filtering out particulate matter of different sizes, free of overall replacement, easy and convenient to operate and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a plate-type air preheater. Background Art

[0002] Plate air preheater is an important waste heat recovery equipment for heating furnaces. It plays an important role in recovering waste heat in flue gas, reducing exhaust gas temperature and improving heating furnace efficiency.

[0003] In the existing equipment, a single filter structure is used to filter the flue gas to prevent the channel from being blocked. However, the particle sizes produced by different combustion products are different, which requires the filter structure to be adjusted accordingly, but the existing equipment does not have the adjustment function.

[0004] Therefore, the utility model provides a plate-type air preheater to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following solution: the utility model provides a plate-type air preheater, comprising an outer shell, in which a plurality of heat exchange plates are installed, one end of the outer shell is connected to an air outlet pipe, the other end of the outer shell is connected to a filter box, the filter box is fixedly connected to and connected to a smoke inlet pipe on a side away from the outer shell, a fixed frame is slidably connected to the filter box, a filter screen is fixedly connected to the fixed frame, a lateral adjustment component and a vertical adjustment component are respectively provided on both sides of the filter screen, the lateral adjustment component and the vertical adjustment component are respectively slidably connected to the fixed frame, the lateral adjustment component and the vertical adjustment component are respectively transmission-connected with a driving component, a sealing plate is attached to the outer side of the filter box, the sealing plate is fixedly connected to the fixed frame, and one end of the driving component extends out of the filter box and passes through the sealing plate.

[0006] Preferably, the driving assembly includes a sliding rod passing through the sealing plate, a rack is fixedly connected to the end of the sliding rod, the rack is fixedly connected to the vertical adjustment assembly, the rack is meshed with a first gear, the first gear is fixedly connected to a second gear through a connecting shaft, the second gear is meshed with a toothed plate, and the toothed plate is fixedly connected to the lateral adjustment assembly.

[0007] Preferably, the vertical adjustment component includes a first mounting frame fixedly connected to the rack, a first slide groove is opened in the fixed frame, the first mounting frame is located in the first slide groove and is slidably connected to the first slide groove, and a plurality of vertical adjustment nets are fixedly connected at equal intervals in the first mounting frame.

[0008] Preferably, the lateral adjustment assembly includes a second mounting frame fixedly connected to the toothed plate. A second sliding groove is formed on one side of the fixed frame away from the first mounting frame. The second mounting frame is located in the second sliding groove and is slidably connected to the second sliding groove. A plurality of lateral adjustment meshes are fixedly connected in the second mounting frame at equal intervals. The lateral adjustment meshes and the vertical adjustment meshes are respectively located on both sides of the filter screen.

[0009] Preferably, a handle is fixedly connected to the end of the sliding rod away from the rack. The handle is located outside the sealing plate.

[0010] Preferably, an opening is provided on one side of the filter box. A connecting plate is installed in the opening. One side of the connecting plate is fixedly connected to the fixed frame, and the other side of the connecting plate is fixedly connected to the sealing plate.

[0011] Preferably, a pull ring is fixedly connected to the outside of the sealing plate.

[0012] Preferably, a sealing strip is installed on the inner side of the sealing plate. The sealing strip is located outside the opening.

[0013] The following technical effects are disclosed by the present utility model: During use, the flue gas enters from the smoke inlet pipe, passes through the filtration of the filter box and then enters the housing. After heat exchange through the heat exchange plate in the housing, it exits from the air outlet pipe. When the combustible is replaced and the generated particles become smaller, the vertical adjustment assembly and the lateral adjustment assembly are simultaneously driven by the driving assembly to slide. The movement of the lateral adjustment assembly and the vertical adjustment assembly is equivalent to adding a block in the middle of the mesh holes of the filter screen, so that the mesh holes become smaller, and finer particulate matter can be filtered out. The sealing plate plays a sealing role to prevent the leakage of flue gas. The fixed frame plays a supporting role for the filter screen, the lateral adjustment assembly and the vertical adjustment assembly to ensure stability. The structure of the present utility model is simple and easy to use. It can adjust the filter screen, filter out particulate matter of different sizes, does not require overall replacement, is simple and convenient to operate, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is an internal structural diagram of the filter box of the present utility model;

[0017] Figure 3 is a cross-sectional view of the fixed frame of the present utility model;

[0018] Figure 4It is a cross-sectional view of the other side of the fixing frame of the utility model;

[0019] In the figure: 1. outer shell; 2. heat exchange plate; 3. filter box; 4. smoke inlet pipe; 5. sealing plate; 6. pull ring; 7. handle; 8. fixing frame; 9. vertical adjustment net; 10. opening; 11. connecting plate; 12. sliding rod; 13. first installation frame; 14. first slide groove; 15. rack; 16. first gear; 17. horizontal adjustment net; 18. connecting shaft; 19. second gear; 20. tooth plate; 21. second slide groove; 22. second installation frame; 23. filter net. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figures 1 - 4 As shown, the present embodiment provides a plate-type air preheater, comprising an outer shell 1, in which a plurality of heat exchange plates 2 are installed, one end of the outer shell 1 is connected to an air outlet pipe, the other end of the outer shell 1 is connected to a filter box 3, the filter box 3 is fixedly connected to and connected to a smoke inlet pipe 4 on a side away from the outer shell 1, a fixed frame 8 is slidably connected to the filter box 3, a filter screen 23 is fixedly connected to the fixed frame 8, a lateral adjustment component and a vertical adjustment component are respectively provided on both sides of the filter screen 23, the lateral adjustment component and the vertical adjustment component are respectively slidably connected to the fixed frame 8, the lateral adjustment component and the vertical adjustment component are respectively transmission-connected to a driving component, a sealing plate 5 is attached to the outer side of the filter box 3, the sealing plate 5 is fixedly connected to the fixed frame 8, and one end of the driving component extends out of the filter box 3 and passes through the sealing plate 5.

[0023] When in use, smoke enters from the smoke inlet pipe 4, enters the housing 1 after being filtered by the filter box 3, and then goes out from the air outlet pipe after heat exchange through the heat exchange plate 2 in the housing 1; when the combustion material is replaced and the generated particles become smaller, the vertical adjustment component and the lateral adjustment component are driven to slide simultaneously by the driving component, and the movement of the lateral adjustment component and the vertical adjustment component is equivalent to adding a blockage from the middle of the mesh of the filter 23, so that the mesh becomes smaller and can filter out finer particles; the sealing plate 5 plays a sealing role to prevent smoke from leaking out, and the fixed frame 8 plays a supporting role for the filter 23, the lateral adjustment component and the vertical adjustment component to ensure stability. The utility model has a simple structure and is easy to use. The filter 23 can be adjusted to filter out particles of different sizes without the need for overall replacement. The operation is simple and convenient, and the service life is long.

[0024] Further optimized solution, the driving assembly includes a sliding rod 12 that passes through the sealing plate 5, a rack 15 is fixedly connected to the end of the sliding rod 12, the rack 15 is fixedly connected to the vertical adjustment assembly, the rack 15 is meshed with a first gear 16, the first gear 16 is fixedly connected to the second gear 19 through the connecting shaft 18, the second gear 19 is meshed with a toothed plate 20, and the toothed plate 20 is fixedly connected to the horizontal adjustment assembly. The rack 15, the first gear 16 and the second gear 19 are respectively embedded in the fixed frame 8 and movably connected to the fixed frame 8. When adjusting, the sliding rod 12 is pushed to drive the rack 15 to move, the rack 15 drives the vertical adjustment assembly to move, and the rack 15 drives the first gear 16 to rotate, the first gear 16 drives the second gear 19 to rotate through the connecting shaft 18, the second gear 19 drives the toothed plate 20 to move, and the toothed plate 20 drives the horizontal adjustment assembly to move synchronously, so as to facilitate filtering of particles of different sizes.

[0025] In a further optimized solution, the vertical adjustment assembly includes a first mounting frame 13 fixedly connected to the rack 15, a first slide groove 14 is provided in the fixed frame 8, the first mounting frame 13 is located in the first slide groove 14 and is slidably connected to the first slide groove 14, and a plurality of vertical adjustment nets 9 are fixedly connected at equal intervals in the first mounting frame 13. The rack 15 drives the first mounting frame 13 to slide in the first slide groove 14, and the first mounting frame 13 drives the vertical adjustment net 9 to move. When not adjusted, the vertical adjustment net 9 overlaps with the filter 23, and when the vertical adjustment net 9 moves, it is staggered with the filter 23, thereby reducing the spacing and being able to filter smaller particles.

[0026] For a further optimized solution, the lateral adjustment component includes a second mounting frame 22 fixedly connected to the toothed plate 20. On one side of the fixed frame 8 away from the first mounting frame 13, a second sliding groove 21 is formed. The second mounting frame 22 is located in the second sliding groove 21 and is slidably connected to the second sliding groove 21. A number of lateral adjustment meshes 17 are fixedly connected at equal intervals in the second mounting frame 22. The lateral adjustment meshes 17 and the vertical adjustment meshes 9 are respectively located on both sides of the filter screen 23. The principle of the lateral adjustment meshes 17 is the same as that of the vertical adjustment meshes 9, and the lateral adjustment meshes 17 and the vertical adjustment meshes 9 cooperate with each other to achieve the effect of reducing the mesh size.

[0027] For a further optimized solution, a handle 7 is fixedly connected to the end of the sliding rod 12 away from the rack 15. The handle 7 is located outside the sealing plate 5. The setting of the handle 7 facilitates pulling or pushing the sliding rod 12, which is convenient for the adjustment work.

[0028] For a further optimized solution, an opening 10 is provided on one side of the filter box 3. A connecting plate 11 is installed in the opening 10. One side of the connecting plate 11 is fixedly connected to the fixed frame 8, and the other side of the connecting plate 11 is fixedly connected to the sealing plate 5. The connecting plate 11 is used to connect the fixed frame 8 and the sealing plate 5. The setting of the opening 10 facilitates taking out the whole for maintenance or replacement, improving the practicability.

[0029] For a further optimized solution, a pull ring 6 is fixedly connected to the outside of the sealing plate 5. The pull ring 6 facilitates the installation and disassembly of the whole, making it more convenient to use.

[0030] For a further optimized solution, a sealing strip is installed on the inner side of the sealing plate 5. The sealing strip is located outside the opening 10. The sealing strip further improves the tightness of the filter box 3 and prevents the leakage of flue gas.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] The embodiments described above are only used to describe the preferred embodiments of the present invention, rather than to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A plate type air preheater, characterized in that: The invention comprises a shell (1), wherein a plurality of heat exchange plates (2) are installed in the shell (1), one end of the shell (1) is connected to an air outlet pipe, and the other end of the shell (1) is connected to a filter box (3), and the filter box (3) is fixedly connected to and connected to a smoke inlet pipe (4) on a side away from the shell (1), and a fixed frame (8) is slidably connected in the filter box (3), and a filter screen (23) is fixedly connected in the fixed frame (8), and a transverse adjustment component and a vertical adjustment component are respectively provided on both sides of the filter screen (23), and the transverse adjustment component and the vertical adjustment component are respectively slidably connected to the fixed frame (8), and the transverse adjustment component and the vertical adjustment component are respectively transmission-connected to a driving component, and a sealing plate (5) is attached to the outer side of the filter box (3), and the sealing plate (5) is fixedly connected to the fixed frame (8), and one end of the driving component extends out of the filter box (3) and passes through the sealing plate (5).

2. The plate type air preheater according to claim 1, characterized in that: The driving assembly comprises a sliding rod (12) penetrating the sealing plate (5), the end of the sliding rod (12) is fixedly connected to a rack (15), the rack (15) is fixedly connected to the vertical adjustment assembly, the rack (15) is meshed with a first gear (16), the first gear (16) is fixedly connected to a second gear (19) via a connecting shaft (18), the second gear (19) is meshed with a toothed plate (20), and the toothed plate (20) is fixedly connected to the lateral adjustment assembly.

3. The plate type air preheater according to claim 2, characterized in that: The vertical adjustment component comprises a first installation frame (13) fixedly connected to the rack (15); a first slide groove (14) is provided in the fixed frame (8); the first installation frame (13) is located in the first slide groove (14) and is slidably connected to the first slide groove (14); and a plurality of vertical adjustment nets (9) are fixedly connected at equal intervals in the first installation frame (13).

4. The plate type air preheater according to claim 3, characterized in that: The transverse adjustment component comprises a second mounting frame (22) fixedly connected to the tooth plate (20); a second slide groove (21) is provided in the fixed frame (8) on a side away from the first mounting frame (13); the second mounting frame (22) is located in the second slide groove (21) and is slidably connected to the second slide groove (21); a plurality of transverse adjustment nets (17) are fixedly connected at equal intervals in the second mounting frame (22); the transverse adjustment nets (17) and the vertical adjustment nets (9) are respectively located on both sides of the filter net (23).

5. The plate type air preheater according to claim 2, characterized in that: One end of the sliding rod (12) away from the rack (15) is fixedly connected with a handle (7), and the handle (7) is located outside the sealing plate (5).

6. The plate type air preheater according to claim 1, characterized in that: One side of the filter box (3) is provided with an opening (10), a connecting plate (11) is installed in the opening (10), one side of the connecting plate (11) is fixedly connected to the fixing frame (8), and the other side of the connecting plate (11) is fixedly connected to the sealing plate (5).

7. The plate type air preheater according to claim 1, characterized in that: A pull ring (6) is fixedly connected to the outer side of the sealing plate (5).

8. The plate type air preheater according to claim 6, characterized in that: A sealing strip is installed on the inner side of the sealing plate (5), and the sealing strip is located on the outer side of the opening (10).

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