Steam boiler tail gas waste heat recovery device

Abstract

The utility model relates to the technical field of tail gas waste heat recovery, and discloses a steam boiler tail gas waste heat recovery device which comprises a main outer shell, a water tank, a water passing shell and a smoke passing pipe are fixedly installed on the outer wall of the main outer shell, a water pump is fixedly installed at the top of the water tank, a smoke outlet is fixedly installed at the top of the main outer shell, and a water inlet is formed in the top of the main outer shell. And one end of a water feeding pipe is fixedly installed at the top of the water pump, a spraying head is fixedly installed at the other end of the water feeding pipe, and an inclined plate is fixedly installed on the inner wall of the main shell. When smoke reaches the bottom of an inclined plate, the smoke moves towards the interior of a smoke passing pipe along the bottom of the inclined plate and enters an upper cavity of a main shell through the smoke passing pipe, at the moment, a water pump is started, the water pump sucks spraying liquid in a water tank, and the spraying liquid is conveyed to a spraying head through a water feeding pipe; when the smoke passes through the filler, the smoke is sprayed out by the spraying head to adsorb particles contained in the smoke in the upper cavity of the main shell, and when the smoke passes through the filler, the residual particles in the smoke are adsorbed through the filler, so that the smoke is purified.

Description

Technical Field

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

[0002] An exhaust gas waste heat recovery device is a device used to recover waste heat from exhaust gas generated by vehicles, industrial equipment, etc. Its working principle is usually to transfer the heat energy in the exhaust gas to other media, such as water or air, through equipment such as heat exchangers, so as to reuse the heat energy.

[0003] The existing exhaust gas waste heat recovery device does not have a filtering device inside, resulting in the particulate harmful substances in the flue gas still existing inside after it recovers the heat inside the flue gas. At the same time, since the filter screen in the filtering device is a necessary item, the filter screen cannot be replaced or cleaned quickly, resulting in excessive equipment downtime. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a steam boiler tail gas waste heat recovery device, which has the advantages of a filtering device and a filter screen for rapid maintenance, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical scheme: a steam boiler exhaust waste heat recovery device, comprising a main shell, the outer walls of the main shell are respectively fixedly mounted with a water tank, a water shell and a smoke pipe, a water pump is fixedly mounted on the top of the water tank, a smoke outlet is fixedly mounted on the top of the main shell, one end of an upper water pipe is fixedly mounted on the top of the water pump, and a spray head is fixedly mounted on the other end of the upper water pipe, an inclined plate is fixedly mounted on the inner wall of the main shell, a heating pipe is fixedly assembled on the inner wall of the main shell, a filter element shell is slidably connected to the inner wall of the smoke outlet, a filler is fixedly mounted on the inner wall of the filter element shell, a lock column is fixedly mounted on the bottom of the inner wall of the smoke outlet, a fixing block is fixedly mounted on the top of the filter element shell, a locking pin is slidably connected to the inner wall of the fixing block, a spring is provided on the outer wall of the locking pin, a limiting groove is provided on the inner wall of the fixing block, and an extension block is fixedly mounted on the outer wall of the spring.

[0006] As a preferred technical solution of the utility model, the inclined plate is sealed with the inner wall of the main shell, and the two ends of the smoke duct are respectively located above and below the inclined plate inside the main shell.

[0007] As a preferred technical solution of the utility model, a circular groove is opened on the inner wall of the water-passing shell close to the main outer shell, and the circular groove is located above the inclined plate. The circular groove on the inner wall of the water-passing shell penetrates the water-passing shell and the main outer shell.

[0008] As a preferred technical solution of the utility model, a notch is provided at the bottom of the water transfer shell, and the notch penetrates the bottom of the water transfer shell and the top of the water tank.

[0009] As a preferred technical solution of the utility model, a circular groove is provided on the outer wall of the lock cylinder, and the diameter of the circular groove is the same as the diameter of the lock pin.

[0010] As a preferred technical solution of the present utility model, the width of the extension block is the same as the width of the inner wall of the limiting groove, and the extension block is located in the inner wall of the limiting groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The exhaust waste heat recovery device of the steam boiler moves along the bottom of the inclined plate to the inside of the smoke pipe when the smoke reaches the bottom of the inclined plate, and enters the upper chamber of the main shell through the smoke pipe. At this time, the water pump starts, and the water pump sucks the spray liquid inside the water tank, and transmits it to the spray head through the upper water pipe. The spray head sprays it to absorb the particles contained in the smoke in the upper chamber of the main shell. When the smoke passes through the filler, the residual particles in the smoke are adsorbed by the filler, so that the smoke is purified.

[0013] 2. The steam boiler exhaust waste heat recovery device drives the extension block to move inside the limit groove by pulling the locking pin. When the extension block moves to the end of the limit groove away from the locking column, the locking pin is rotated to make the extension block enter the top of the limit groove so that the extension block is fixed. At this time, the filter element housing is pulled upward to move the filter element housing upward along the smoke outlet, and the filter element housing is taken out to replace the filler inside it. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the inclined plate structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the smoke outlet of the utility model;

[0018] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0019] Figure 6 This is a schematic diagram of the lock pin structure of the utility model.

[0020] In the figure: 1. Main shell; 2. Water tank; 3. Water pump; 4. Smoke outlet; 5. Water supply pipe; 6. Sprinkler head; 7. Water flow shell; 8. Inclined plate; 9. Smoke outlet pipe; 10. Heating tube; 11. Filter shell; 12. Filler; 13. Fixing block; 14. Lock pin; 15. Spring; 16. Limiting groove; 17. Locking column; 18. Extension block. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-6 A steam boiler tail gas waste heat recovery device comprises a main shell 1, the outer wall of the main shell 1 is respectively fixedly mounted with a water tank 2, a water shell 7 and a smoke pipe 9, a water pump 3 is fixedly mounted on the top of the water tank 2, a smoke outlet 4 is fixedly mounted on the top of the main shell 1, one end of a water pipe 5 is fixedly mounted on the top of the water pump 3, and a spray head 6 is fixedly mounted on the other end of the water pipe 5, an inclined plate 8 is fixedly mounted on the inner wall of the main shell 1, a heating pipe 10 is fixedly mounted on the inner wall of the main shell 1, and the inner wall of the smoke outlet 4 slides A filter element housing 11 is connected, a filler 12 is fixedly installed on the inner wall of the filter element housing 11, a lock column 17 is fixedly installed on the bottom of the inner wall of the smoke outlet 4, a fixing block 13 is fixedly installed on the top of the filter element housing 11, a locking pin 14 is slidably connected to the inner wall of the fixing block 13, a spring 15 is provided on the outer wall of the locking pin 14, a limiting groove 16 is provided on the inner wall of the fixing block 13, and an extension block 18 is fixedly installed on the outer wall of the spring 15. In the above structure, the number of smoke pipes 9 is three, which makes the smoke transmission speed faster.

[0023] In a preferred embodiment, the inclined plate 8 is sealed to the inner wall of the main shell 1, and the two ends of the smoke duct 9 are respectively located above and below the inclined plate 8 inside the main shell 1. In the above structure, the inner cavity of the main shell 1 is divided into two chambers by the inclined plate 8, and the two chambers are completely separated by the inclined plate 8, so that the smoke in the lower chamber of the main shell 1 will not reach the upper chamber through the inclined plate 8, and the spray liquid in the upper chamber will not reach the lower chamber through the inclined plate 8.

[0024] In a preferred embodiment, a circular groove is provided on the inner wall of the water-passing shell 7 close to the main outer shell 1, and the circular groove is located above the inclined plate 8. The circular groove on the inner wall of the water-passing shell 7 penetrates the water-passing shell 7 and the main outer shell 1. In the above structure, the liquid is sprayed toward the top of the inclined plate 8 through the spray head 6, flows toward the water-passing shell 7 through the inclined plate 8, and enters the inner wall of the water-passing shell 7 through the circular groove on the outer wall of the water-passing shell 7.

[0025] In a preferred embodiment, a notch is provided at the bottom of the water-passing shell 7, and the notch penetrates the bottom of the water-passing shell 7 and the top of the water tank 2. In the above structure, when the liquid reaches the inside of the water-passing shell 7, it returns to the inside of the water tank 2 through the notch at the bottom of the water-passing shell 7, so that the spray water is recycled.

[0026] In a preferred embodiment, a circular groove is provided on the outer wall of the lock column 17, and the diameter of the circular groove is the same as the diameter of the lock pin 14. In the above structure, the lock pin 14 is placed in the circular groove on the outer wall of the lock column 17, so that the lock pin 14 and the lock column 17 are fixed, thereby fixing the fixing block 13.

[0027] In a preferred embodiment, the width of the extension block 18 is the same as the inner wall width of the limiting groove 16, and the extension block 18 is located in the inner wall of the limiting groove 16. In the above structure, the extension block 18 is located inside the limiting groove 16. When the locking pin 14 is pulled, the extension block 18 moves inside the limiting groove 16. When the extension block 18 moves to the end of the limiting groove 16 away from the locking column 17, the locking pin 14 is rotated so that the extension block 18 enters the top of the limiting groove 16, thereby fixing the extension block 18.

[0028] Working principle: when in use, the smoke enters the lower chamber of the main shell 1 from the bottom of the main shell 1, the heating tube 10 absorbs the heat in the smoke and heats the water inside the heating tube 10, when the smoke reaches the bottom of the inclined plate 8, the smoke moves along the bottom of the inclined plate 8 to the inside of the smoke pipe 9, and enters the upper chamber of the main shell 1 through the smoke pipe 9, at this time, the water pump 3 is started, the water pump 3 sucks the spray liquid inside the water tank 2, and transmits it to the spray head 6 through the upper water pipe 5, and the spray head 6 sprays it to absorb the particles contained in the smoke in the upper chamber of the main shell 1, and the smoke reaches the bottom of the filter element housing 11, and the residual particles in the smoke are adsorbed by the filter element housing 11, so that the smoke is purified, when the filler 12 needs to be replaced, pull the lock pin 14, and the lock pin 14 drives the extension block 18 Move inside the limiting groove 16, when the extension block 18 moves to the end of the limiting groove 16 away from the lock column 17, rotate the lock pin 14 so that the extension block 18 enters the top of the limiting groove 16, thereby fixing the extension block 18, and at this time pull the filter element housing 11 upward to move the filter element housing 11 upward along the smoke outlet 4, take out the filter element housing 11 and clean or replace the filler 12 inside it, after the replacement is completed, place the filter element housing 11 inside the smoke outlet 4, and make the smoke duct 9 enter the inside of the filter element housing 11, install the filter element housing 11 to the bottom of the smoke outlet 4, and at this time rotate the lock pin 14 so that the extension block 18 and the top of the limiting groove 16 are separated from the spring 15 and rebound, thereby causing the lock pin 14 to be squeezed into the circular groove on the outer wall of the lock column 17 to fix it.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steam boiler tail gas waste heat recovery device, comprising a main housing (1), characterized in that: The outer wall of the main shell (1) is respectively fixedly mounted with a water tank (2), a water passing shell (7) and a smoke outlet (9); the top of the water tank (2) is fixedly mounted with a water pump (3); the top of the main shell (1) is fixedly mounted with a smoke outlet (4); the top of the water pump (3) is fixedly mounted with one end of a water supply pipe (5); the other end of the water supply pipe (5) is fixedly mounted with a spray head (6); the inner wall of the main shell (1) is fixedly mounted with an inclined plate (8); the inner wall of the main shell (1) is fixedly mounted with a heating pipe (10); the smoke outlet (4) is fixedly mounted with a water supply pipe (11); The inner wall of the filter element housing (11) is slidably connected to the inner wall of the filter element housing (11), a filler (12) is fixedly installed on the inner wall of the filter element housing (11), a lock column (17) is fixedly installed on the bottom of the inner wall of the smoke outlet (4), a fixing block (13) is fixedly installed on the top of the filter element housing (11), a lock pin (14) is slidably connected to the inner wall of the fixing block (13), a spring (15) is provided on the outer wall of the lock pin (14), a limiting groove (16) is provided on the inner wall of the fixing block (13), and an extension block (18) is fixedly installed on the outer wall of the spring (15).

2. A steam boiler tail gas waste heat recovery device according to claim 1, characterized in that: The inclined plate (8) is sealed to the inner wall of the main shell (1), and two ends of the smoke duct (9) are respectively located above the inclined plate (8) and below the inclined plate (8) inside the main shell (1).

3. A steam boiler tail gas waste heat recovery device according to claim 1, characterized in that: A circular groove is provided on the inner wall of the water-passing shell (7) close to the main outer shell (1), and the circular groove is located above the inclined plate (8). The circular groove on the inner wall of the water-passing shell (7) penetrates the water-passing shell (7) and the main outer shell (1).

4. A steam boiler tail gas waste heat recovery device according to claim 1, characterized in that: The bottom of the water-passing shell (7) is provided with a notch, and the notch penetrates the bottom of the water-passing shell (7) and the top of the water tank (2).

5. The steam boiler tail gas waste heat recovery device according to claim 1, characterized in that: A circular groove is formed on the outer wall of the locking column (17), and the diameter of the circular groove is the same as the diameter of the locking pin (14).

6. A steam boiler tail gas waste heat recovery device according to claim 1, characterized in that: The width of the extension block (18) is the same as the width of the inner wall of the limiting groove (16), and the extension block (18) is located in the inner wall of the limiting groove (16).

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