Flue gas waste heat recovery device of horizontal gas-fired boiler

Abstract

The utility model discloses a horizontal gas-fired boiler flue gas waste heat recovery device, which relates to the technical field of flue gas waste heat recovery and comprises a boiler body, the bottom of the boiler body is fixedly connected with a base, the top of the base is fixedly connected with a heat exchanger, a heat exchange tube is mounted in the heat exchanger, and two ends of the heat exchange tube extend to the upper side of the heat exchanger. According to the flue gas waste heat recovery device for the horizontal gas-fired boiler, through the arrangement of a second switch valve, a second three-way connector and a first switch valve, when the filter box in use needs to be cleaned, the second switch valve and the first switch valve corresponding to the other filter box are started, and the filter box is cleaned; and when the filter plate is cleaned, the second switch valve and the first switch valve corresponding to the filter box needing to be cleaned are closed, and the opened filter box is utilized to continue to filter the flue gas, so that the flue gas can still be filtered when the filter plate is cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas waste heat recovery, in particular to a flue gas waste heat recovery device for a horizontal gas boiler. Background Art

[0002] Gas heating boilers are also called gas heating boilers and gas heating boilers. A gas heating boiler refers to a boiler that uses gas combustion to heat boiler water to meet people's heating needs. Gas includes natural gas, city gas, liquefied gas and biogas, etc., and gas boilers often need to recover the waste heat of flue gas when in use. According to a gas boiler flue gas waste heat recovery device with application number CN219433810U, it has a first filter element, an ash scraper, a limit baffle, a pull ring, a fixed clamp, an ash collection bin, a tightening gripper, a second filter element and a sealing gasket. This design can quickly clean the smoke and dust accumulation on the outside of the filter element, and can be conveniently combined with external equipment for use, realizing the functional diversity of the device, solving the problem of the original gas boiler flue gas waste heat recovery device having a single function and complex cleaning of smoke dust particles, and improving the waste heat recovery efficiency of the utility model. However, when cleaning the filter element, it cannot filter the flue gas, and the device needs to be shut down, affecting the progress of the flue gas waste heat recovery work. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a horizontal gas boiler flue gas waste heat recovery device, which solves the problems raised in the above background technology.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A horizontal gas boiler flue gas waste heat recovery device includes a boiler body, the bottom of the boiler body is fixedly connected to a base, the top of the base is fixedly connected to a heat exchanger, a heat exchange tube is installed inside the heat exchanger, both ends of the heat exchange tube extend to the top of the heat exchanger, one end of the heat exchange tube is fixedly connected to a flue, a fan is installed inside the flue, a first three-way joint is fixedly connected to one side of the flue, both ends of the first three-way joint are fixedly connected to a first switch valve, one end of the first switch valve is fixedly connected to a filter box, one side of the filter box is fixedly connected to a second switch valve, a second three-way joint is fixedly connected between the two second switch valves, one end of the second three-way joint is fixedly connected to a smoke pipe, and one end of the smoke pipe is connected to the smoke exhaust port of the boiler body.

[0006] Preferably, a liquid inlet pipe is fixedly connected to the top of the heat exchanger, a liquid discharge pipe is fixedly connected to one side of the heat exchanger, and one end of the liquid inlet pipe and the liquid discharge pipe both extend into the interior of the heat exchanger.

[0007] Preferably, two plug-in plates are fixedly connected to the bottom of the inner cavity of the filter box, a filter plate is inserted between the two plug-in plates, a mounting seat is fixedly connected to the top of the filter box and above the filter plate, a sealing block is inserted inside the mounting seat, the bottom end of the sealing block extends into the interior of the filter box and is connected to the top of the filter plate, both sides of the sealing block are fixedly connected to a first threaded block, both sides of the mounting seat and below the first threaded block are fixedly connected to a second threaded block, and the first threaded block and the second threaded block are fixedly connected by screws.

[0008] Preferably, the top of the filter box and one side of the mounting seat are fixedly connected with a first electric telescopic rod, the telescopic ends of the first electric telescopic rods extend into the interior of the filter box and are fixedly connected with a scraper block, a placement groove is provided on one side of the inner wall of the filter box, a second electric telescopic rod is fixedly connected to one side of the filter box, the telescopic ends of the second electric telescopic rods extend into the interior of the placement groove and are fixedly connected with a push plate, and a discharge valve is fixedly connected to the bottom of the filter box.

[0009] Preferably, both sides of the filter box are fixedly connected to a winding box, the inner cavity of the winding box is rotatably connected to the winding roller, the outer side of the winding roller is wrapped with a traction rope, the bottom end of the traction rope extends to the adsorption of the winding box, the bottom ends of the four traction ropes are fixedly connected to a moving block, and a collecting box is fixedly connected between the four moving blocks, and a sealing groove is opened on the top of the collecting box and below the discharge valve, the bottom end of the discharge valve is inserted into the sealing groove, and a collecting drawer is placed inside the collecting box, and one side of the winding box is fixedly connected to a servo motor, and the output end of the servo motor is connected to one end of the winding roller, and both sides of one end of the collecting drawer are fixedly connected to a threaded plate, and the threaded plates are connected to the collection box by screws.

[0010] Preferably, the bottom of the collection box is fixedly connected to a support plate, the top of the base and both sides of the collection box are fixedly connected to a fixed plate, one side of the fixed plate is provided with a guide groove, both ends of the support plate extend into the two guide grooves respectively, the inside of the fixed plate and on one side of the guide groove is provided with a storage groove, one side of the fixed plate is fixedly connected to a third electric telescopic rod, the telescopic end of the third electric telescopic rod extends into the storage groove and is fixedly connected to a support block, and one end of the support block extends into the guide groove.

[0011] The utility model provides a horizontal gas boiler flue gas waste heat recovery device, which has the following beneficial effects:

[0012] 1. The horizontal gas boiler flue gas waste heat recovery device is provided with a second switch valve, a second three-way joint and a first switch valve. When the filter box in use needs to be cleaned, the second switch valve and the first switch valve corresponding to the other filter box are started, and the second switch valve and the first switch valve corresponding to the filter box to be cleaned are closed. The opened filter box is used to continue filtering the flue gas, so that the flue gas can still be filtered when the filter plate is being cleaned.

[0013] 2. The horizontal gas boiler flue gas waste heat recovery device is provided with a collecting drawer, a winding box and a winding roller. When it is necessary to clean the filtered material stored in the collecting drawer, the telescopic end of the third electric telescopic rod drives the support block to move downward, so that the support block is out of contact with the bottom of the support plate, and then the output end of the servo motor drives the winding roller to rotate, so that the traction rope drives the moving block, the collecting box and the collecting drawer to move downward, so that the two ends of the support plate move downward along the inside of the two guide grooves, and then the operator unscrews the screw out of the threaded plate, and then pulls out the collecting drawer to clean the filtered material stored in the collecting drawer, thereby facilitating the staff to clean the filtered material in the collecting drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the outer side of the collection box of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the filter box of the utility model when viewed from above;

[0017] Figure 4 This is a schematic diagram of the outer structure of the winding box of the utility model;

[0018] Figure 5 This is a schematic diagram of the top view of the two filter boxes of the utility model;

[0019] Figure 6 For the utility model structure Figure 1 A magnified view of point A in the figure;

[0020] Figure 7 For the utility model structure Figure 1 Enlarged view of point B in FIG.

[0021] Figure 8 For the utility model structure Figure 1 Enlarged view of point C in the figure.

[0022] Description of reference numerals:

[0023] 1. Boiler body; 2. Base; 3. Smoke pipe; 4. Heat exchanger; 5. Drain pipe; 6. Heat exchanger pipe; 7. Liquid inlet pipe; 8. Flue; 9. Fan; 10. Filter box; 11. Insert plate; 12. Filter plate; 13. First electric telescopic rod; 14. Scraper; 15. Second electric telescopic rod; 16. Placement trough; 17. Push plate; 18. Discharge valve; 19. Traction rope; 20. Winding box; 21. Winding roller; 22. Moving block; 23. , collection box; 24, collection drawer; 25, sealing groove; 26, fixing plate; 27, guide groove; 28, support plate; 29, third electric telescopic rod; 30, storage slot; 32, support block; 33, servo motor; 34, first threaded block; 35, second threaded block; 36, mounting seat; 37, sealing block; 38, first switch valve; 39, first three-way joint; 40, second three-way joint; 41, second switch valve; 42, threaded plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1

[0026] See also Figures 1 to 3 、 Figure 5 and Figure 6 The utility model provides a technical solution: a horizontal gas boiler flue gas waste heat recovery device, including a boiler body 1, a base 2 is fixedly connected to the bottom of the boiler body 1, a heat exchanger 4 is fixedly connected to the top of the base 2, a heat exchange tube 6 is installed inside the heat exchanger 4, both ends of the heat exchange tube 6 extend to the top of the heat exchanger 4, one end of the heat exchange tube 6 is fixedly connected to a flue 8, a fan 9 is installed inside the flue 8, a first three-way joint 39 is fixedly connected to one side of the flue 8, both ends of the first three-way joint 39 are fixedly connected to a first switch valve 38, one end of the first switch valve 38 is fixedly connected to a filter box 10, one side of the filter box 10 is fixedly connected to a second switch valve 41, a second three-way joint 40 is fixedly connected between the two second switch valves 41, one end of the second three-way joint 40 is fixedly connected to the smoke pipe 3, and one end of the smoke pipe 3 is connected to the smoke exhaust port of the boiler body 1.

[0027] The top of the heat exchanger 4 is fixedly connected with a liquid inlet pipe 7, and one side of the heat exchanger 4 is fixedly connected with a liquid discharge pipe 5. One end of the liquid inlet pipe 7 and the liquid discharge pipe 5 are extended to the inside of the heat exchanger 4 to recover the flue gas. The bottom of the inner cavity of the filter box 10 is fixedly connected with two plug plates 11, and a filter plate 12 is inserted between the two plug plates 11. The top of the filter box 10 and above the filter plate 12 are fixedly connected with a mounting seat 36, and a sealing block 37 is inserted inside the mounting seat 36. The bottom end of the sealing block 37 extends to the inside of the filter box 10 and is connected to the top of the filter plate 12. Both sides of the sealing block 37 are fixedly connected with a first threaded block 34, and both sides of the mounting seat 36 and below the first threaded block 34 are fixedly connected with a second threaded block 35. The first threaded block 34 and the second threaded block 35 are fixedly connected by screws. When the filter plate 12 needs to be replaced, the screws are unscrewed from the first threaded block 34 and the second threaded block 35, and then After that, the filter plate 12 is pulled out of the filter box 10, and the bottom end of the new filter plate 12 is passed through the mounting seat 36 and inserted between the two plug-in plates 11, and then the first threaded block 34 and the second threaded block 35 are fixed by screws to fix the filter plate 12, and a sealing gasket is installed inside the mounting seat 36. The top of the filter box 10 and one side of the mounting seat 36 are fixedly connected to the first electric telescopic rod 13, the telescopic ends of the first electric telescopic rod 13 extend into the interior of the filter box 10 and are fixedly connected to the scraper block 14. A placement groove 16 is provided on one side of the inner wall of the filter box 10, and a second electric telescopic rod 15 is fixedly connected to one side of the filter box 10. The telescopic ends of the second electric telescopic rod 15 extend into the interior of the placement groove 16 and are fixedly connected to the push plate 17. The bottom of the filter box 10 is fixedly connected to the discharge valve 18, and the control box installed on the top of the base 2 is used to drive the device to work and clean the filter plate 12.

[0028] Example 2

[0029] See also Figures 1 to 4 、 Figure 6 and Figure 7The filter box 10 is fixedly connected to a winding box 20 on both sides, and the inner cavity of the winding box 20 is rotatably connected to the winding roller 21. The outer side of the winding roller 21 is wrapped with a traction rope 19, and the bottom end of the traction rope 19 extends to the adsorption of the winding box 20. The bottom ends of the four traction ropes 19 are fixedly connected to a moving block 22, and a collecting box 23 is fixedly connected between the four moving blocks 22. The top of the collecting box 23 and the bottom of the discharge valve 18 are provided with a sealing groove 25, and the bottom end of the discharge valve 18 is inserted into the sealing groove 25. A collecting drawer 24 is placed inside the collecting box 23, and one side of the winding box 20 is fixedly connected to a servo motor 33. The output end of the servo motor 33 is connected to one end of the winding roller 21, and both sides of one end of the collecting drawer 24 are fixedly connected with a threaded plate 42, which is connected to the collecting box 23 by screws, so as to take out the cleaned filter stored in the collecting drawer 24.

[0030] The bottom of the collection box 23 is fixedly connected to a support plate 28, and the top of the base 2 and both sides of the collection box 23 are fixedly connected to a fixed plate 26, one side of the fixed plate 26 is provided with a guide groove 27, both ends of the support plate 28 extend into the two guide grooves 27 respectively, and a storage groove 30 is provided inside the fixed plate 26 and on one side of the guide groove 27, and one side of the fixed plate 26 is fixedly connected to a third electric telescopic rod 29, the telescopic end of the third electric telescopic rod 29 extends into the storage groove 30 and is fixedly connected to a support block 32, one end of the support block 32 extends into the guide groove 27 so that the end of the support plate 28 is supported by the support block 32, thereby limiting the position of the support plate 28, the collection box 23 and the collection drawer 24.

[0031] In summary, when the horizontal gas boiler flue gas waste heat recovery device is in use, the flue gas inside the boiler body 1 enters the second three-way joint 40 through the smoke pipe 3, and then enters a filter box 10 through the opened second switch valve 41, and the flue gas is filtered by the first electric telescopic rod 13, and then the flue gas enters the first three-way joint 39 through the opened first switch valve 38, and then enters the flue 8 through the first three-way joint 39, and is introduced into the heat exchange tube 6 through the fan 9. Hot water is input into the heat exchanger 4 through the liquid inlet pipe 7, and then the water exchanges heat with the flue gas inside the heat exchange tube 6. Then the flue gas is discharged into the subsequent processing equipment through the other end of the heat exchange tube 6, and the hot water is discharged into the subsequent use equipment through the drain pipe 5, thereby recovering the waste heat in the flue gas.

[0032] When it is necessary to clean the filter box 10 in use, the second switch valve 41 and the first switch valve 38 corresponding to the other filter box 10 are started, the second switch valve 41 and the first switch valve 38 corresponding to the filter box 10 that needs to be cleaned are closed, and the open filter box 10 is used to continue filtering the flue gas.

[0033] Then the telescopic end of the first electric telescopic rod 13 pushes the scraper block 14 to move, so that the scraper block 14 scrapes the filtered material on the surface of the filter plate 12, and then the telescopic end of the first electric telescopic rod 13 drives the scraper block 14 to move upward, and then the telescopic end of the second electric telescopic rod 15 pushes the push plate 17 to move, so that the push plate 17 pushes the filtered material scraped from the bottom of the inner cavity of the filter box 10 into the discharge valve 18, and then falls into the collection drawer 24 through the opened discharge valve 18 for storage, and then the telescopic end of the second electric telescopic rod 15 drives the push plate 17 to reset and move to the inside of the placement groove 16.

[0034] When it is necessary to clean the filtered material stored in the collecting drawer 24, the telescopic end of the third electric telescopic rod 29 drives the support block 32 to move downward, so that the support block 32 is out of contact with the bottom of the support plate 28, and then the output end of the servo motor 33 drives the winding roller 21 to rotate, so that the traction rope 19 drives the moving block 22 and the collecting box 23 and the collecting drawer 24 to move downward, so that the two ends of the support plate 28 move downward along the two guide grooves 27, and then the operator unscrews the screw out of the threaded plate 42, and then pulls out the collecting drawer 24, cleans the filtered material stored in the collecting drawer 24, and then pushes the collecting drawer 24 back into the collecting box 23, and then Then, the threaded plate 42 is connected to the collection box 23 by screws, thereby fixing the collection drawer 24, and then the output end of the servo motor 33 drives the winding roller 21 to reset and rotate, so that the traction rope 19 is wrapped around the outside of the winding roller 21, so that the traction rope 19 drives the moving block 22 and the collection box 23 and the collection drawer 24 to move upward, so that the bottom end of the discharge valve 18 is inserted into the sealing groove 25, and then when the collection box 23 moves to the specified position, the telescopic end of the third electric telescopic rod 29 pushes the support block 32 to move, so that the support block 32 is located below one end of the support plate 28, thereby supporting and limiting the position of the support plate 28 and the collection box 23.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A horizontal gas boiler flue gas waste heat recovery device, comprising a boiler body (1), characterized in that: The bottom of the boiler body (1) is fixedly connected to a base (2), the top of the base (2) is fixedly connected to a heat exchanger (4), a heat exchange tube (6) is installed inside the heat exchanger (4), both ends of the heat exchange tube (6) extend above the heat exchanger (4), one end of the heat exchange tube (6) is fixedly connected to a flue (8), a fan (9) is installed inside the flue (8), one side of the flue (8) is fixedly connected to a first three-way joint (39), both ends of the first three-way joint (39) are fixedly connected to a first switch valve (38), one end of the first switch valve (38) is fixedly connected to a filter box (10), one side of the filter box (10) is fixedly connected to a second switch valve (41), a second three-way joint (40) is fixedly connected between the two second switch valves (41), one end of the second three-way joint (40) is fixedly connected to a smoke pipe (3), and one end of the smoke pipe (3) is connected to the smoke exhaust port of the boiler body (1).

2. The horizontal gas boiler flue gas waste heat recovery device according to claim 1, characterized in that: A liquid inlet pipe (7) is fixedly connected to the top of the heat exchanger (4), and a liquid discharge pipe (5) is fixedly connected to one side of the heat exchanger (4). One end of each of the liquid inlet pipe (7) and the liquid discharge pipe (5) extends into the interior of the heat exchanger (4).

3. The horizontal gas boiler flue gas waste heat recovery device according to claim 1, characterized in that: The bottom of the inner cavity of the filter box (10) is fixedly connected to two plug plates (11), a filter plate (12) is inserted between the two plug plates (11), the top of the filter box (10) and above the filter plate (12) is fixedly connected to a mounting seat (36), the interior of the mounting seat (36) is inserted with a sealing block (37), the bottom end of the sealing block (37) extends into the interior of the filter box (10) and is connected to the top of the filter plate (12), both sides of the sealing block (37) are fixedly connected to a first threaded block (34), both sides of the mounting seat (36) and below the first threaded block (34) are fixedly connected to a second threaded block (35), and the first threaded block (34) and the second threaded block (35) are fixedly connected by screws.

4. The horizontal gas boiler flue gas waste heat recovery device according to claim 1, characterized in that: A first electric telescopic rod (13) is fixedly connected to the top of the filter box (10) and on one side of the mounting seat (36); the telescopic ends of the first electric telescopic rod (13) extend into the interior of the filter box (10) and are fixedly connected to a scraper block (14); a placement groove (16) is provided on one side of the inner wall of the filter box (10); a second electric telescopic rod (15) is fixedly connected to one side of the filter box (10); the telescopic ends of the second electric telescopic rod (15) extend into the interior of the placement groove (16) and are fixedly connected to a push plate (17); and a discharge valve (18) is fixedly connected to the bottom of the filter box (10).

5. The horizontal gas boiler flue gas waste heat recovery device according to claim 1, characterized in that: Both sides of the filter box (10) are fixedly connected to a winding box (20), the inner cavity of the winding box (20) is rotatably connected to a winding roller (21), the outer side of the winding roller (21) is wound with a traction rope (19), the bottom end of the traction rope (19) is extended to the adsorption of the winding box (20), the bottom ends of the four traction ropes (19) are fixedly connected to a moving block (22), and a collecting box (23) is fixedly connected between the four moving blocks (22). The top of the collecting box (23) is located at the discharge valve (1 8), a sealing groove (25) is provided below each of the discharge valves (18), the bottom end of each of the discharge valves (18) is inserted into the sealing groove (25), a collecting drawer (24) is placed inside the collecting box (23), a servo motor (33) is fixedly connected to one side of the winding box (20), the output end of each of the servo motors (33) is connected to one end of the winding roller (21), and threaded plates (42) are fixedly connected to both sides of one end of the collecting drawer (24), and the threaded plates (42) are connected to the collecting box (23) by screws.

6. The horizontal gas boiler flue gas waste heat recovery device according to claim 5, characterized in that: The bottom of the collection box (23) is fixedly connected to a support plate (28), the top of the base (2) and both sides of the collection box (23) are fixedly connected to fixed plates (26), one side of the fixed plate (26) is provided with a guide groove (27), both ends of the support plate (28) extend into the inside of the two guide grooves (27), the inside of the fixed plate (26) and one side of the guide groove (27) is provided with a storage groove (30), one side of the fixed plate (26) is fixedly connected to a third electric telescopic rod (29), the telescopic end of the third electric telescopic rod (29) extends into the inside of the storage groove (30) and is fixedly connected to a support block (32), one end of the support block (32) extends into the inside of the guide groove (27).

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