Air pre-heater with ash removal device

Abstract

The air pre-heater comprises an upper heat exchange tube box, a lower heat exchange tube box, a front wall plate and a rear wall plate, a first supporting rod and a second supporting rod are arranged in the lower heat exchange tube box, two transverse support assemblies are arranged on the upper side of the first supporting rod and the upper side of the second supporting rod in parallel, a connecting frame is connected between the two transverse support assemblies, and the connecting frame is connected with the front wall plate and the rear wall plate. A main shaft is arranged above the transverse support assembly, a plurality of comb plate assemblies are arranged on the main shaft at intervals, a vertical driving device is arranged on the upper side of the main shaft, and vertical reset devices are arranged at the two ends of the main shaft respectively. And the horizontal driving device is used for driving the transverse support assembly to move along the first supporting rod and the second supporting rod. The air pre-heater with the ash removal device is good in ash removal effect and capable of stably removing ash for a long time.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning equipment, and in particular relates to an air preheater with a dust cleaning device. Background Art

[0002] Air preheater is an important equipment in boiler system. Its function on boiler is mainly to improve combustion rate, reduce flue gas emission, reduce pollutant emission, reduce corrosion and scaling, etc. Therefore, in modern boiler system, air preheater is a very important energy-saving and environmental protection equipment.

[0003] The air preheater is located inside the flue. Usually, multiple groups of air preheaters are installed in series in the flue. Each group of air preheaters consists of an upper and lower heat exchange tube box connected in series. The flue gas generated by the combustion of the boiler is obviously corrosive. When it enters the air preheater, the boiler will adhere to the surface of the air preheater heat exchange tube, which will cumulatively hinder the flow of flue gas, increase the risk of corrosion of the preheater pipe, reduce the heating efficiency, and even block the air duct. Therefore, it is usually necessary to use a cleaning comb to clean the ash accumulated between the tubes. However, the ash accumulated on the surface of the air preheater is mostly fluid or a mixture of multiple components, which has a certain viscosity. When the comb plate is moved horizontally through the heat exchange tube to clean the ash, the mixture will adhere to the comb plate, resulting in ash accumulation on the tube plates at both ends of the air preheater, and the formation range of the comb plate is gradually compressed. Summary of the invention

[0004] The object of the present invention is to solve the above-mentioned problem and provide an air preheater with a dust cleaning device.

[0005] To achieve the above-mentioned purpose, the present invention provides an air preheater with a dust cleaning device, comprising an upper heat exchange tube box, a lower heat exchange tube box, a front wall plate and a rear wall plate located between the upper heat exchange tube box and the lower heat exchange tube box and respectively connected to the upper heat exchange tube box and the lower heat exchange tube box, a first support rod and a second support rod are provided in the lower heat exchange tube box, two transverse support assemblies are provided on the upper sides of the first support rod and the second support rod in parallel with each other, a connecting frame is connected between the two transverse support assemblies, a main shaft is provided above the transverse support assembly, a plurality of comb plate assemblies are provided on the main shaft at intervals, a vertical driving device is provided on the upper side of the main shaft, and vertical resetting devices are provided at both ends of the main shaft;

[0006] It also includes a horizontal driving device, which is located on the outer side of the front wall panel and connected to the middle part of the transverse support assembly, and is used to drive the transverse support assembly to move along the first support rod and the second support rod.

[0007] Preferably, the transverse bracket assembly comprises a first transverse bracket and a second transverse bracket arranged at intervals, and an end connecting plate fixedly connected to the first transverse bracket and the second transverse bracket;

[0008] A clamping plate is fixedly connected to the first transverse bracket and the second transverse bracket, and a spindle guide hole is provided on the clamping plate, and the spindle passes through the spindle guide hole;

[0009] The lower side of the card plate is connected to a roller, the outer side of the roller is also provided with an anti-slip guard plate fixedly connected to the card plate, and the anti-slip hanging plate is connected to a track guard plate;

[0010] The connecting frame is fixedly connected between two corresponding clamping plates on two transverse bracket assemblies.

[0011] Preferably, the vertical resetting device comprises:

[0012] a support plate supported on the transverse support assembly;

[0013] A lower fixed seat, located at the lower side of the main shaft;

[0014] An upper fixing seat, located on the upper side of the main shaft, wherein the upper fixing seat and the lower fixing seat are fixedly connected by bolts;

[0015] A reset guide rod, located at the lower side of the lower fixed seat and fixedly connected to the lower fixed seat, wherein the lower end of the reset guide rod passes through the support plate;

[0016] A reset spring is located between the support plate and the lower fixing seat and is sleeved on the outer periphery of the reset guide rod.

[0017] Preferably, a reset guide rod is fixedly connected to the upper fixed seat, and the reset guide rod is matched with a guide plate;

[0018] One end of the guide plate is fixedly connected to the upper side of the card plate.

[0019] Preferably, the vertical drive device comprises:

[0020] A bearing seat, fixedly supported on the transverse support assembly;

[0021] A bearing structure, mounted on the bearing seat;

[0022] The rotating shaft is matched with the bearing structures on the two transverse bracket assemblies respectively. The two ends of the rotating shaft are fixedly connected with eccentric rollers. The eccentric rollers are supported on the main shaft and matched with the main shaft.

[0023] Preferably, the vertical drive device further comprises a drive motor located outside the front wall panel, and the drive motor is connected to a transmission shaft via a coupling;

[0024] The rotating shaft has a transmission hole, and a driving shaft is provided at the front end of the transmission shaft and extends into the transmission hole to slide axially with the rotating shaft;

[0025] The driving shaft is a hexagonal column structure;

[0026] The transmission hole is a hexagonal hole.

[0027] Preferably, the comb plate assembly comprises:

[0028] A comb plate mounting seat, fixedly connected to the main shaft;

[0029] An upper comb plate, fixedly connected to the comb plate mounting seat, extending toward the upper heat exchange tube box;

[0030] A lower comb plate, fixedly connected to the comb plate mounting seat, extending toward the lower heat exchange tube box;

[0031] The upper comb plate and the lower comb plate have a self-cleaning function, and cleaning saw teeth are provided on the upper comb plate and the lower comb plate;

[0032] The saw teeth of the cleaning saw teeth on the upper comb plate face the comb plate mounting seat, and the saw teeth of the cleaning saw teeth on the lower comb plate face away from the comb plate mounting seat.

[0033] Preferably, a limit plate is provided on the transverse support assembly, and the lower comb plate is arranged through the limit plate;

[0034] Support guide plates are also provided at both ends of the main shaft, and the support guide plates are supported on the transverse bracket assembly;

[0035] The supporting guide plate is located outside the clamping plate.

[0036] Preferably, the horizontal driving device comprises a horizontal driving cylinder, a cylinder push-pull rod, and a driving connecting shaft;

[0037] The driving connecting shaft passes through the front wall plate and is fixedly connected to the transverse bracket assembly;

[0038] The cylinder push-pull rod and the driving connecting shaft are connected via a coupling structure.

[0039] Preferably, a maintenance manhole is provided on the front wall plate, and a manhole cover is provided at the maintenance manhole;

[0040] The location where the inspection manhole is opened corresponds to the location where the vertical resetting device is set.

[0041] The beneficial effects of the present invention are as follows:

[0042] The air preheater with a dust cleaning device of the present invention can drive the transverse support assembly to move along the first support rod and the second support rod through the operation of the horizontal drive device. Since the connecting frame connects the two groups of transverse support assemblies together, the two groups of transverse support assemblies can be synchronously moved along the first support rod and the second support rod, so that the comb plate assembly can be translated between the heat exchanger tubes to achieve the dust cleaning operation. At the same time, due to the setting of the vertical drive device and the vertical reset device, the comb plate assembly can be driven to reciprocate up and down, and the tooth plate can reciprocate from top to bottom in the gap between the heat exchange tubes, cutting and shaking off the sticky or hardened dust on the heat exchange tubes, and the dust on the tube plates at both ends of the air preheater can also be cleaned, thereby avoiding the problem of the comb plate travel range being gradually compressed due to sticky dust accumulation, and achieving long-term stable dust cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A perspective view schematically showing an air preheater with a dust cleaning device according to an embodiment of the present invention;

[0044] Figure 2 A side view schematically shows an air preheater with a dust cleaning device according to an embodiment of the present invention;

[0045] Figure 3 Schematically showing the interior of an air preheater with a dust cleaning device according to one embodiment of the present invention;

[0046] Figure 4 A perspective view schematically showing a dust cleaning device according to an embodiment of the present invention;

[0047] Figure 5 A schematic top view of a dust cleaning device according to an embodiment of the present invention is shown;

[0048] Figure 6 Schematic representation Figure 5 A magnified view of the local structure in

[0049] Figure 7 Schematic representation Figure 4 Enlarged view of part A in the middle;

[0050] Figure 8 Schematic representation Figure 4 Enlarged view of middle part B;

[0051] Fig. 9 Schematic representation Figure 4 Enlarged view of middle C;

[0052] Fig.10 A schematic diagram showing a structure of a dust cleaning device according to an embodiment of the present invention;

[0053] Fig.11 Schematic representation Fig.10 The enlarged view of the D part in FIG.

[0054] Fig.12 A side view schematically showing a dust cleaning device according to an embodiment of the present invention;

[0055] Fig.13 Schematic representation Fig.12 Enlarged view of middle E part;

[0056] Fig.14 Schematic representation Fig.12 Enlarged view of part F in the middle.

[0057] The meanings of the symbols in the accompanying drawings are as follows:

[0058] a, upper heat exchange tube box; b, lower heat exchange tube box; b1, first support rod; b2, second support rod; 1, front wall panel; 2, rear wall panel; 3, horizontal support assembly; 4, connecting frame; 5, main shaft; 6, comb plate assembly; 7, vertical drive device; 8, vertical reset device; 9, horizontal drive device; 31, first horizontal support; 32, second horizontal support; 33, end connection plate; 34, clamping plate; 35, roller; 36, anti-slip guard plate; 37, track guard plate; 81, support plate; 82, lower fixed seat; 8 3. Upper fixing seat; 84. Bolt; 85. Reset guide rod; 86. Reset spring; 87. Reset guide rod; 88. Guide plate; 71. Bearing seat; 72. Bearing structure; 73. Rotating shaft; 74. Eccentric roller; 75. Driving motor; 76. Transmission shaft; 77. Driving shaft; 61. Comb plate mounting seat; 62. Upper comb plate; 63. Lower comb plate; 38. Limiting plate; 39. Support guide plate; 91. Horizontal driving cylinder; 92. Cylinder push-pull rod; 93. Driving connecting shaft; 11. Manhole cover. DETAILED DESCRIPTION

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0060] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the embodiments of the present invention are not therefore limited to the following embodiments.

[0061] Combination Figure 1-Figure 14As shown, the present invention provides an air preheater with a dust cleaning device, comprising an upper heat exchange tube box a and a lower heat exchange tube box b, the front and rear ends of the upper heat exchange tube box a and the lower heat exchange tube box b are fixedly connected by a front wall panel 1 and a rear wall panel 2 respectively, and the upper heat exchange tube box a and the lower heat exchange tube box b are provided with a plurality of heat exchange tubes.

[0062] There is an installation height gap between the upper heat exchange tube box a and the lower heat exchange tube box b, and a dust cleaning device is provided between the upper heat exchange tube box a and the lower heat exchange tube box b. Specifically, the lower heat exchange tube box b is provided with a first support rod b1 and a second support rod b2. According to an embodiment of the present invention, the two heat exchange tubes in the uppermost heat exchange tube of the lower heat exchange tube box b can be removed and replaced with the first support rod b1 and the second support rod b2. Two transverse support assemblies 3 are provided on the upper side of the first support rod b1 and the second support rod b2 in parallel with each other, and a connecting frame 4 is connected between the two transverse support assemblies 3. A main shaft 5 is provided above the transverse support assembly 3, and a plurality of comb plate assemblies 6 are provided on the main shaft 5 at intervals. A vertical driving device 7 is provided on the upper side of the main shaft 5, and vertical reset devices 8 are provided at both ends of the main shaft 5. A horizontal driving device 9 is also included, which is located on the outer side of the front wall panel 1 and connected to the middle part of the transverse support assembly 3, and is used to drive the transverse support assembly 3 to move along the first support rod b1 and the second support rod b2.

[0063] The air preheater with a dust cleaning device of the present invention can drive the transverse support assembly 3 to move along the first support rod b1 and the second support rod b2 through the operation of the horizontal drive device 9. Since the connecting frame 4 connects the two groups of transverse support assemblies 3 together, the two groups of transverse support assemblies 3 can be synchronously moved along the first support rod b1 and the second support rod b2, so that the comb plate assembly 6 can be translated between the heat exchanger tubes to achieve the dust cleaning operation. At the same time, due to the setting of the vertical drive device 7 and the vertical reset device 8, the comb plate assembly 6 can be driven to reciprocate up and down, so that the tooth plate can reciprocate from top to bottom in the gap between the heat exchange tubes, cut and shake off the sticky or hardened dust on the heat exchange tubes, and can also clean the dust on the tube plates at both ends of the air preheater, thereby avoiding the problem of the comb plate travel range being gradually compressed due to sticky dust accumulation, and achieving long-term stable dust cleaning.

[0064] Combination Figure 1 , Figure 3-Figure 14 As shown, according to an embodiment of the present invention, the transverse bracket assembly 3 includes a first transverse bracket 31 and a second transverse bracket 32 ​​arranged at intervals, and an end connecting plate 33 fixedly connected to the first transverse bracket 31 and the second transverse bracket 32. The end connecting plate 33 is located at both ends of the first transverse bracket 31 and the second transverse bracket 32, and forms a frame structure with the first transverse bracket 31 and the second transverse bracket 32.

[0065] In this embodiment, a clamping plate 34 is fixedly connected to the first transverse bracket 31 and the second transverse bracket 32, and a spindle guide hole 341 is provided on the clamping plate 34. The spindle 5 is arranged through the spindle guide hole 341, and the spindle 5 can move up and down in the spindle guide hole 341. The lower side of the clamping plate 34 is connected to a roller 35, and an anti-slip guard plate 36 is also provided on the outer side of the roller 35 and fixedly connected to the clamping plate 34. A track guard plate 37 is connected to the anti-slip hanging plate 36; the connecting frame 4 is fixedly connected between the two corresponding clamping plates 34 on the two transverse bracket assemblies 2. An oblique bracket is also provided between the connecting frame 4 and the transverse bracket assembly 3 to increase the structural strength.

[0066] Combination Figure 2 , Figure 8 , Figure 10-12 As shown, the vertical driving device 7 of the present invention includes a bearing seat 71, a bearing structure 72, a rotating shaft 73, an eccentric roller 74, a driving motor 75, a transmission shaft 76 and a driving shaft 77.

[0067] Among them, the bearing seat 71 is fixedly supported on the transverse support assembly 3, and the bearing structure 72 is installed on the bearing seat 71. The rotating shaft 73 is matched with the bearing structures 72 on the two transverse support assemblies 3 respectively, and the two ends of the rotating shaft 73 are fixedly connected with eccentric rollers 74, and the eccentric rollers 74 are supported on the shaft 5 and matched with the main shaft 5. The driving motor 75 is located on the outside of the front wall plate 1, and is connected to the transmission shaft 76 through a coupling. The rotating shaft 73 has a transmission hole, and the front end of the transmission shaft 76 is provided with a driving shaft 77 extending into the transmission hole and axially slidingly matching with the rotating shaft 73; the driving shaft 77 is a hexagonal columnar structure, and the transmission hole is an inner hexagonal hole.

[0068] Combination Figure 4 , Figure 7 , Figure 12-14 As shown, the vertical resetting device 8 of the present invention includes a support plate 81 , a lower fixing seat 82 , an upper fixing seat 83 , a bolt 84 , a resetting guide rod 85 , a resetting spring, a resetting guide rod 87 and a guide plate 88 .

[0069] The support plate 81 is supported on the transverse support assembly 3, specifically, the support plate 81 is fixedly supported on the first transverse support 31 and the second transverse support 32. The lower fixed seat 82 and the upper fixed seat 83 are respectively located on the lower and upper sides of the main shaft 5, and the upper fixed seat 83 and the lower fixed seat 83 are fixedly connected by bolts 84, so as to realize the connection between the upper fixed seat 83, the lower fixed seat 82 and the main shaft 5. The reset guide rod 85 is located at the lower side of the lower fixed seat 82 and is fixedly connected to the lower fixed seat 82, and the lower end of the reset guide rod 85 passes through the support plate 81. The reset spring 86 is sleeved on the outer periphery of the reset guide rod 85 and is located between the support plate 81 and the lower fixed seat 82. The reset guide rod 87 is located on the upper side of the upper fixed seat 83 and is fixedly connected to the upper fixed seat 83, one end of the guide plate 88 is fixedly connected to the upper side of the clamping plate 34, and the reset guide rod 87 passes through the guide plate 88 and slides with the guide plate 88.

[0070] Combination Fig. 9 As shown, the comb plate assembly 6 of the present invention includes a comb plate mounting seat 61, an upper comb plate 62 and a lower comb plate 63. The comb plate mounting seat 61 is fixedly connected to the main shaft 5, and the upper comb plate 62 is fixedly connected to the comb plate mounting seat 61 and extends toward the upper heat exchange tube box a. The lower comb plate 63 is fixedly connected to the comb plate mounting seat 61 and extends toward the lower heat exchange tube box b. The upper comb plate 62 and the lower comb plate 63 have a self-cleaning function, and cleaning serrations are provided on the upper comb plate 62 and the lower comb plate 63. The serrations of the cleaning serrations on the upper comb plate 62 face the comb plate mounting seat 61, and the serrations of the cleaning serrations on the lower comb plate 63 face away from the comb plate mounting seat 61.

[0071] In this embodiment, a limit plate 38 is provided on the transverse support assembly 3, and the lower comb plate 63 is arranged through the limit plate 38. Support guide plates 39 are also provided at both ends of the main shaft 5, and the support guide plates 39 are supported on the transverse support assembly 3, and the support guide plates 39 are located outside the clamping plate 34.

[0072] In the air preheater cleaning operation, the longer the tooth plate, the greater the resistance, causing the comb plate to deform, and the dust accumulated at both ends cannot be cleaned. During the cleaning process, when the comb plate comes into contact with the dust, the dust accumulated on the pipe surface will produce resistance to the comb plate. Since the lower end of the comb plate is suspended, the comb plate will be subjected to bending force, causing it to bend and deform. The longer the comb plate, the more serious the deformation, resulting in the dust accumulated at both ends cannot be cleaned. The longer the comb plate, the greater the impact force, causing the comb plate to twist and deform, increasing the running resistance and damaging the heat exchange tube. During the cleaning process, the comb plate will impact or collide with the dust accumulated on the surface of the pipe. These impact forces cause the comb plate to vibrate and strain, resulting in local twisting and deformation. Deformation increases the running resistance and damages the heat exchange tube. The longer the comb plate, the greater the bending moment at the root, and the alternating load causes fatigue fracture at the root of the fixed end of the comb plate.

[0073] The air preheater with a dust cleaning device of the present invention is provided with the comb plate assembly, so that the upper comb plate 62 and the lower comb plate 63 are subjected to less force, have less deformation, are thoroughly cleaned, and have a long service life.

[0074] like Figure 2 As shown, according to one embodiment of the invention, the horizontal drive device 9 of the present invention includes a horizontal drive cylinder 91, a cylinder push-pull rod 92, and a drive connecting shaft 93. The drive connecting shaft 93 passes through the front wall plate 1 and is fixedly connected to the horizontal support assembly 3. The cylinder push-pull rod 92 and the drive connecting shaft 93 are connected by a coupling structure.

[0075] The air preheater with a dust cleaning device of the present invention can maintain a constant thrust after encountering an obstacle during cleaning, and will not cause damage to the equipment being pushed at the rear end.

[0076] like Figure 1 As shown, the front wall plate 1 of the present invention is provided with a maintenance manhole, and the maintenance manhole is provided with a manhole cover plate 11; the location where the maintenance manhole is opened corresponds to the location where the vertical reset device 8 is provided. Such a setting facilitates the maintenance of the whole machine.

[0077] The working principle of the air preheater with dust removal device of the present invention is as follows:

[0078] During operation, the boiler flue gas flows from top to bottom through the upper heat exchange tube box a and the lower heat exchange tube box b. The flue gas flows through the heat exchange tubes and exchanges heat with the air flowing through the heat exchange tubes. During this period, the soot contained in the flue gas may accumulate on the outer surface of the heat exchange tubes. A cleaning device is installed between the upper heat exchange tube box a and the lower heat exchange tube box b. It is controlled by the controller and the automatic cleaning cycle is set according to the working conditions. The cylinder push-pull rod 92 of the horizontal drive device 9 passes through the front wall panel 1 to drive the cleaning trolley (composed of two horizontal bracket assemblies 3 and a connecting frame 4) to reciprocate along the axial direction of the heat exchange tube, driving the comb plate array to squeeze and cut the accumulated ash on (between) the heat exchange tubes, and controlling the flow of compressed air entering the horizontal drive cylinder 91 to adjust the cylinder extension speed, thereby adjusting the reciprocating speed of the push-pull cleaning trolley to achieve the purpose of online cleaning of the air preheater. The driving motor 75 of the vertical driving device 7 provides rotational power to drive the transmission shaft 76 to rotate. The transmission shaft 76 passes through the front wall plate 1 and enters the flue. The front end of the transmission shaft 76 is provided with a driving shaft 77. The driving shaft 77 is a hexagonal prism structure. The driving shaft 77 drives the rotating shaft 73 to rotate. The eccentric roller 74 thereon rotates to drive the main shaft 5 to move downward, thereby realizing the downward movement of the comb plate assembly 6. The reset spring 86 resets the comb plate assembly 6 upward. The upper comb plate 62 and the lower comb plate 63 have cleaning serrations at the front and rear ends. The comb plate moves up and down to cut the dust accumulated between the heat exchange tubes, so that the dust is broken and falls off from between the tubes, so as to achieve the purpose of removing the dust accumulated between the heat exchange tubes. The speed and working time of the driving motor 75 are adjusted by the controller, and the cleaning cutting force and the cleaning working time and cycle are dynamically adjusted according to the dust accumulation in the flue. The cleaning effect achieved by optimization reduces the dust accumulation in the heat exchange tubes and improves the heat exchange efficiency of the air preheater.

[0079] The above is only one embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air preheater with a dust cleaning device, characterized in that: The invention comprises an upper heat exchange tube box (a), a lower heat exchange tube box (b), a front wall panel (1) and a rear wall panel (2) located between the upper heat exchange tube box (a) and the lower heat exchange tube box (b) and fixedly connected to the upper heat exchange tube box (a) and the lower heat exchange tube box (b) respectively; a first support rod (b1) and a second support rod (b2) are provided in the lower heat exchange tube box (b); two transverse support assemblies (3) are provided on the upper sides of the first support rod (b1) and the second support rod (b2) in parallel with each other; a connecting frame (4) is connected between the two transverse support assemblies (3); a main shaft (5) is provided above the transverse support assembly (3); a plurality of comb plate assemblies (6) are provided on the main shaft (5) at intervals; a vertical driving device (7) is provided on the upper side of the main shaft (5); and vertical reset devices (8) are provided at both ends of the main shaft (5); It also comprises a horizontal driving device (9), which is located on the outside of the front wall panel (1) and connected to the middle of the transverse support assembly (3), and is used to drive the transverse support assembly (3) to move along the first support rod (b1) and the second support rod (b2).

2. The air preheater with a dust cleaning device according to claim 1, characterized in that: The transverse bracket assembly (3) comprises a first transverse bracket (31) and a second transverse bracket (32) which are arranged at intervals, and an end connecting plate (33) which is fixedly connected to the first transverse bracket (31) and the second transverse bracket (32); A clamping plate (34) is fixedly connected to the first transverse bracket (31) and the second transverse bracket (32); a spindle guide hole (341) is provided on the clamping plate (34); and the spindle (5) is arranged through the spindle guide hole (341); The lower side of the card plate (34) is connected to a roller (35), and an anti-slip guard plate (36) is provided on the outer side of the roller (35) and is fixedly connected to the card plate (34), and a track guard plate (37) is connected to the anti-slip hanging plate (36); The connecting frame (4) is fixedly connected between two corresponding clamping plates (34) on the two transverse support assemblies (2).

3. The air preheater with a dust cleaning device according to claim 2, characterized in that: The vertical resetting device (8) comprises: A support plate (81) supported on the transverse support assembly (3); A lower fixing seat (82) is located at the lower side of the main shaft (5); An upper fixing seat (83) is located on the upper side of the main shaft (5), and the upper fixing seat (83) and the lower fixing seat (82) are fixedly connected by bolts (84); A reset guide rod (85), located at the lower side of the lower fixed seat (82) and fixedly connected to the lower fixed seat (82), wherein the lower end of the reset guide rod (85) passes through the support plate (81); A reset spring (86) is located between the support plate (81) and the lower fixing seat (82) and is sleeved on the outer periphery of the reset guide rod (85).

4. The air preheater with a dust cleaning device according to claim 3, characterized in that: The upper fixed seat (83) is fixedly connected with a reset guide rod (87), and the reset guide rod (87) is matched with a guide plate (88); One end of the guide plate (88) is fixedly connected to the upper side of the clamping plate (34).

5. The air preheater with a dust cleaning device according to any one of claims 1 to 4, characterized in that: The vertical drive device (7) comprises: A bearing seat (71) fixedly supported on the transverse support assembly (3); A bearing structure (72) mounted on the bearing seat (71); The rotating shaft (73) is respectively matched with the bearing structures (72) on the two transverse support assemblies (3); the two ends of the rotating shaft (73) are fixedly connected with eccentric rollers (74); the eccentric rollers (74) are supported on the main shaft (5) and matched with the main shaft (5).

6. The air preheater with a dust cleaning device according to claim 5, characterized in that: The vertical drive device (7) further comprises a drive motor (75) located outside the front wall panel (1), and the drive motor (75) is connected to a transmission shaft (76) via a coupling; The rotating shaft (73) has a transmission hole, and a driving shaft (77) is provided at the front end of the transmission shaft (76) and extends into the transmission hole to axially slide with the rotating shaft (73); The driving shaft (77) is a hexagonal column structure; The transmission hole is a hexagonal hole.

7. The air preheater with a dust cleaning device according to claim 2, characterized in that: The comb plate assembly (6) comprises: A comb plate mounting seat (61) fixedly connected to the main shaft (5); An upper comb plate (62) is fixedly connected to the comb plate mounting seat (61) and extends toward the upper heat exchange tube box (a); A lower comb plate (63) is fixedly connected to the comb plate mounting seat (61) and extends toward the lower heat exchange tube box (b); The upper comb tooth plate (62) and the lower comb tooth plate (63) have a self-cleaning function, and cleaning saw teeth are provided on the upper comb tooth plate (62) and the lower comb tooth plate (63); The cleaning teeth on the upper comb plate (62) face the comb plate mounting seat (61), and the cleaning teeth on the lower comb plate (63) face away from the comb plate mounting seat (61).

8. The air preheater with a dust cleaning device according to claim 7, characterized in that: The transverse support assembly (3) is provided with a limiting plate (38), and the lower comb plate (63) is arranged through the limiting plate (38); Support guide plates (39) are also provided at both ends of the main shaft (5), and the support guide plates (39) are supported on the transverse support assembly (3); The supporting guide plate (39) is located outside the clamping plate (34).

9. The air preheater with a dust cleaning device according to claim 1, characterized in that: The horizontal driving device (9) comprises a horizontal driving cylinder (91), a cylinder push-pull rod (92), and a driving connecting shaft (93); The driving connection shaft (93) passes through the front wall plate (1) and is fixedly connected to the transverse support assembly (3); The cylinder push-pull rod (92) and the driving connection shaft (93) are connected via a coupling structure.

10. The air preheater with a dust cleaning device according to claim 1, characterized in that: The front wall panel (1) is provided with a maintenance manhole, and the maintenance manhole is provided with a manhole cover plate (11); The location where the inspection manhole is opened corresponds to the location where the vertical resetting device (8) is set.

Images