CN219474350U

CN219474350U - Flue gas waste heat recovery device

Info

Publication number: CN219474350U
Application number: CN202320483202.0U
Authority: CN
Inventors: 赵江波; 陈建; 张崇佳
Original assignee: Henan Lingheng Engineering Technology Co ltd
Current assignee: Henan Lingheng Engineering Technology Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-04
Anticipated expiration: 2033-03-14

Abstract

The utility model discloses a flue gas waste heat recovery device which comprises a recovery box, wherein an air inlet pipe is fixedly arranged on the left side of the recovery box, an air outlet pipe and a water adding pipe are respectively and fixedly arranged on the top of the recovery box, water is contained in the recovery box, a sewage draining pipe is arranged on the front side of the recovery box, and a filter screen, a cleaning assembly and a waste heat recovery assembly are respectively arranged in the recovery box. This flue gas waste heat recovery device, pour into the recovery tank through the fan with boiler tail gas by the intake pipe in, heat the water in the recovery tank, utilize inlet tube, spiral coil pipe and outlet pipe, communicate inlet tube and outlet pipe and outside circulating water pipe, can reach the purpose that carries out recycle to the heat, and at the same time, utilize the filter screen to filter the dust in the flue gas, impurity piles up on the filter screen surface, drive the pivot through the air current blowing on the impeller surface and rotate, can drive the brush board and clean the lower surface of filter screen, make the filter screen keep link up.

Description

Flue gas waste heat recovery device

Technical Field

The utility model relates to the technical field of flue gas treatment devices, in particular to a flue gas waste heat recovery device.

Background

In the in-process that the boiler was used, the flue gas that fuel combustion produced was discharged through the exhaust gas discharge pipe, and when the flue gas was discharged, set up a gas wash tank at the end of giving vent to anger of exhaust gas discharge pipe generally to set up the filter screen in the inside of gas wash tank, be used for filtering the impurity in the flue gas, so that tail gas can discharge up to standard, simultaneously, the heat in the flue gas is imported in the aquatic, can heat water, through set up heat exchange copper pipe in the inside of gas wash tank, heat exchange copper pipe and external circulation pipe system intercommunication again reach the purpose to flue gas waste heat recovery.

However, when the filter screen in the tank water is utilized to filter the flue gas, impurities can be blocked on the surface of the filter screen, and then the normal use of the boiler can be influenced.

Therefore, a flue gas waste heat recovery device is provided for the above problems.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides a flue gas waste heat recovery device to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the flue gas waste heat recovery device comprises a recovery box, wherein an air inlet pipe is fixedly arranged on the left side of the recovery box, an air outlet pipe and a water adding pipe are respectively and fixedly arranged on the top of the recovery box, water is contained in the recovery box, a sewage draining pipe is arranged on the front side of the recovery box, and a filter screen, a cleaning component and a waste heat recovery component are respectively arranged in the recovery box;

the cleaning assembly comprises a rotating shaft which is rotatably connected with the inner bottom wall of the recovery box, an impeller and a brush plate are fixedly arranged on the surface of the rotating shaft respectively, the impeller corresponds to the position of the air outlet end of the air inlet pipe, and the brush plate is in contact with the lower surface of the filter screen;

the waste heat recovery assembly comprises a water inlet pipe and a water outlet pipe which are embedded at the top of the recovery box, and one ends of the water inlet pipe and the water outlet pipe, which are positioned in the recovery box, are communicated through a spiral coil pipe.

Preferably, the air inlet end of the air inlet pipe is communicated with the air outlet pipe of the external boiler, and the air outlet end of the air inlet pipe is positioned at the lower side of the filter screen.

Preferably, a fan for blowing tail gas into the recovery box is fixedly arranged on the surface of the recovery box.

Preferably, the top of pivot extends to the top of filter screen and rotates with the filter screen to be connected, and the top fixed mounting of pivot has the puddler.

Preferably, the outer wall of the recovery box is coated with heat preservation cotton.

Preferably, the right side of the recovery box is fixedly provided with a sewage collecting box, a sewage inlet hole is formed between the sewage collecting box and the recovery box, and the bottom end of the sewage inlet hole is consistent with the height of the lower surface of the filter screen.

Preferably, the top of the dirt collecting box is provided with a dirt collecting opening, and the surface of the dirt collecting opening is plugged with a sealing cover.

The utility model has the technical effects and advantages that:

compared with the prior art, this flue gas waste heat recovery device is when using, pour into the recovery box through the fan with boiler tail gas by the intake pipe in, heat the water in the recovery box, utilize inlet tube, helical coil and outlet pipe, with inlet tube and outlet pipe and outside circulating water pipe intercommunication, can reach the purpose that carries out recycle to the heat, and at the same time, utilize the filter screen to filter the dust in the flue gas, impurity piles up on the filter screen surface, drive the pivot through the air current blowing on the impeller surface and rotate, can drive the brush board and clean the lower surface of filter screen, make the filter screen keep link up.

Compared with the prior art, the flue gas waste heat recovery device has the advantages that the dirt collecting box and the dirt inlet holes are arranged, dirt on the surface of the filter screen gradually enters the dirt collecting box from the dirt inlet holes under the brushing action of the brushing plate, the purposes of stacking and gathering are achieved in the dirt collecting box, and after the sealing cover is opened, the dirt is conveniently and rapidly cleaned without additionally stopping and overhauling.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic diagram of the front cross-section structure of the present utility model.

Fig. 3 is a schematic diagram of a schematic view of a recovery tank in a top-down section.

The reference numerals are: 1. a recovery box; 2. an air inlet pipe; 3. an air outlet pipe; 4. a water supply pipe; 5. a filter screen; 6. a rotating shaft; 7. an impeller; 8. brushing a plate; 9. a water inlet pipe; 10. a water outlet pipe; 11. a spiral coil; 12. a blower; 13. a stirring rod; 14. thermal insulation cotton; 15. a dirt collection box; 16. a dirt inlet hole; 17. sealing cover; 18. and a blow-down pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The flue gas waste heat recovery device shown in figures 1-3 comprises a recovery box 1, wherein heat preservation cotton 14 is coated on the outer wall of the recovery box 1.

By arranging the heat preservation cotton 14, the purpose of heat preservation of the recovery box 1 can be achieved.

The left side fixed mounting of collection box 1 has intake pipe 2, and the top of collection box 1 fixed mounting has outlet duct 3 and water pipe 4 respectively, and the inside of collection box 1 holds water, and the front of collection box 1 is provided with blow off pipe 18, and the inside of collection box 1 is provided with filter screen 5, clearance subassembly and waste heat recovery subassembly respectively.

The waste heat recovery component comprises a water inlet pipe 9 and a water outlet pipe 10 which are embedded at the top of the recovery box 1, and one ends of the water inlet pipe 9 and the water outlet pipe 10 which are positioned in the recovery box 1 are communicated through a spiral coil 11.

The air inlet end of the air inlet pipe 2 is communicated with an exhaust pipe of an external boiler, a fan 12 for blowing tail gas into the recovery box 1 is fixedly arranged on the surface of the recovery box 1, and the air outlet end of the air inlet pipe 2 is positioned at the lower side of the filter screen 5.

The water inlet pipe 9 and the water outlet pipe 10 are communicated with an external circulating water pipeline, boiler tail gas is injected into the recovery box 1 through the air inlet pipe 2 by the fan 12, water in the recovery box 1 is heated, and heat is used for heating the water in the circulating water pipeline through the spiral coil 11, so that the purpose of recycling the heat of flue gas is achieved.

And at the same time, the dust in the flue gas is filtered by the filter screen 5, and impurities are accumulated on the surface of the filter screen 5.

The cleaning component comprises a rotating shaft 6 which is rotationally connected with the inner bottom wall of the recovery box 1, an impeller 7 and a brush plate 8 are fixedly arranged on the surface of the rotating shaft 6 respectively, the impeller 7 corresponds to the position of the air outlet end of the air inlet pipe 2, and the brush plate 8 is in contact with the lower surface of the filter screen 5.

The rotating shaft 6 is driven to rotate by air flow blowing on the surface of the impeller 7, and the brush plate 8 can be driven to clean the lower surface of the filter screen 5, so that the filter screen 5 is kept through, and the normal use of the boiler exhaust is ensured.

The top of pivot 6 extends to the top of filter screen 5 and rotates with filter screen 5 to be connected, and the top fixed mounting of pivot 6 has puddler 13.

By providing the stirring rod 13, the water can be stirred, and the heat exchange can be promoted.

The right side fixed mounting of collection box 1 has dirty box 15, has seted up into dirty hole 16 between dirty box 15 and the collection box 1, and the bottom of advancing dirty hole 16 highly accords with the lower surface of filter screen 5, and the top of dirty box 15 is provided with drags for dirty mouthful, and drags for dirty mouthful surface plug and is equipped with sealed lid 17.

Dirt on the surface of the filter screen 5 gradually enters the dirt collecting box 15 from the dirt inlet holes 16 under the brushing action of the brush plate 8, the purposes of accumulation and aggregation are achieved in the dirt collecting box 15, and the sealing cover 17 is opened, so that the dirt is conveniently cleaned without additional shutdown maintenance and cleaning.

The working process of the utility model is as follows:

firstly, when the flue gas waste heat recovery device is used at the later stage, the water inlet pipe 9 and the water outlet pipe 10 are communicated with an external circulating water pipeline, boiler tail gas is injected into the recovery box 1 through the air inlet pipe 2 by the fan 12, water in the recovery box 1 is heated by heat, the purpose of recycling flue gas heat is achieved by heating the water in the circulating water pipeline through the spiral coil 11, and meanwhile, dust in the flue gas is filtered by the filter screen 5, impurities are accumulated on the surface of the filter screen 5, the rotating shaft 6 is driven to rotate by the surface of the impeller 7 through air flow, the brush plate 8 can be driven to clean the lower surface of the filter screen 5, the filter screen 5 is kept to be communicated, normal use of boiler exhaust is ensured, dirty on the surface of the filter screen 5 gradually enters the dirty collecting box 15 through the dirty inlet holes 16 under the brushing action of the brush plate 8, the purpose of piling and collecting are achieved in the dirty collecting box 15, and the seal cover 17 is opened, so that the dirty is cleaned conveniently without extra shutdown maintenance.

This is the working principle of the flue gas waste heat recovery device.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a flue gas waste heat recovery device, includes collection box (1), its characterized in that: an air inlet pipe (2) is fixedly arranged on the left side of the recovery box (1), an air outlet pipe (3) and a water adding pipe (4) are respectively and fixedly arranged at the top of the recovery box (1), water is contained in the recovery box (1), a sewage draining pipe (18) is arranged on the front side of the recovery box (1), and a filter screen (5), a cleaning assembly and a waste heat recovery assembly are respectively arranged in the recovery box (1);

the cleaning assembly comprises a rotating shaft (6) which is rotatably connected with the inner bottom wall of the recovery box (1), an impeller (7) and a brush plate (8) are fixedly arranged on the surface of the rotating shaft (6), the impeller (7) corresponds to the position of the air outlet end of the air inlet pipe (2), and the brush plate (8) is in contact with the lower surface of the filter screen (5);

the waste heat recovery assembly comprises a water inlet pipe (9) and a water outlet pipe (10) which are embedded at the top of the recovery box (1), and one ends of the water inlet pipe (9) and the water outlet pipe (10) which are positioned in the recovery box (1) are communicated through a spiral coil pipe (11).

2. A flue gas waste heat recovery device according to claim 1, wherein: the air inlet end of the air inlet pipe (2) is communicated with the air outlet pipe of the external boiler, and the air outlet end of the air inlet pipe (2) is positioned at the lower side of the filter screen (5).

3. A flue gas waste heat recovery device according to claim 2, wherein: the surface of the recovery box (1) is fixedly provided with a fan (12) for blowing tail gas into the recovery box (1).

4. A flue gas waste heat recovery device according to claim 1, wherein: the top of the rotating shaft (6) extends to the upper part of the filter screen (5) and is rotationally connected with the filter screen (5), and the stirring rod (13) is fixedly arranged at the top of the rotating shaft (6).

5. A flue gas waste heat recovery device according to claim 1, wherein: the outer wall of the recovery box (1) is coated with heat preservation cotton (14).

6. A flue gas waste heat recovery device according to claim 1, wherein: the right side of the recovery box (1) is fixedly provided with a sewage collecting box (15), a sewage inlet hole (16) is formed between the sewage collecting box (15) and the recovery box (1), and the bottom end of the sewage inlet hole (16) is consistent with the lower surface of the filter screen (5).

7. The flue gas waste heat recovery device according to claim 6, wherein: the top of the dirt collecting box (15) is provided with a dirt collecting port, and the surface of the dirt collecting port is plugged with a sealing cover (17).