CN219367663U

CN219367663U - Flue high temperature draught fan

Info

Publication number: CN219367663U
Application number: CN202223563203.0U
Authority: CN
Inventors: 易伟; 徐静; 张毅
Original assignee: Hunan Xiding New Materials Co ltd
Current assignee: Hunan Xiding New Materials Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-18
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a high-temperature induced draft fan for a flue, which relates to the technical field of induced draft fans and comprises a chimney, wherein an air suction device is arranged at the lower end of the inner part of the chimney, and a filter layer is detachably arranged at the top end of the filter layer; the spiral circulation pipe is arranged in the chimney and is positioned between the air suction device and the filter layer; one end of the first water pipe is connected to the upper end of the spiral circulation pipe, and the other end of the first water pipe is connected with a cold water conveying mechanism; one end of the second water pipe is connected to the lower end of the spiral circulating pipe, and the other end of the second water pipe is connected with a hot water discharge mechanism; this draught fan can make the flue gas temperature reduce the back again through the filtration discharge of filter layer, and then reduces the influence that high temperature caused the filter layer, prolongs the life of filter layer, avoids frequently changing the filter layer, can reduce workman's intensity of labour.

Description

Flue high temperature draught fan

Technical Field

The utility model relates to the technical field of induced fans, in particular to a flue high-temperature induced fan.

Background

The chimney is a structure for providing ventilation for hot flue gas, smoke and other waste gases of boilers and fireplaces, the shape of the chimney is usually vertical or is as close to vertical as possible so as to ensure the smooth flow of the gases, the chimney is widely applied to industries such as smelting, power generation, chemical industry and the like, and in order to increase the ventilation speed and the gas transmission capacity of the chimney, an induced draft fan is usually additionally arranged at the bottom of the chimney, and the induced draft fan is used for providing power for the waste gas so as to enable the waste gas to be rapidly discharged, thereby improving the combustion conditions of the boilers and the fireplaces.

The patent application document of application number 201920899318.6 discloses an energy-conserving flue structure of draught fan export, this structure is through the operation of high pressure steam drive flue device, for the inside mobile waste gas of flue device provides extra power, finally with the waste heat energy conversion in the waste gas drive waste gas kinetic energy, the energy utilization rate has been improved, energy-conserving purpose is realized, however this structure has neglected an important problem, ordinary temperature is higher when flue gas gets into the chimney, the flue gas needs to be filtered before the discharge in order to reduce the impurity in the flue gas, reduce pollution, but when high temperature flue gas is through the filter layer, can cause the filter to continuously receive the high temperature effect because long-time high temperature effect, and then cause the easy impaired problem of filter, the staff need often change between the filtration, it is very troublesome.

Disclosure of Invention

The utility model aims to provide a flue high-temperature induced draft fan, which solves the following technical problems:

when high-temperature flue gas passes through the filter layer, the filter element can be caused to continuously receive the high-temperature effect due to the long-time high-temperature effect, so that the filter element is easy to damage, and workers need to replace the filter element frequently, so that the filter element is quite troublesome.

The aim of the utility model can be achieved by the following technical scheme:

the high-temperature induced draft fan for the flue comprises a chimney, wherein an air suction device is arranged at the lower end inside the chimney, and the high-temperature induced draft fan also comprises

The filter layer is detachably arranged at the top end of the chimney;

the spiral circulation pipe is arranged in the chimney and is positioned between the air suction device and the filter layer;

one end of the first water pipe is connected to the upper end of the spiral circulation pipe, and the other end of the first water pipe is connected with a cold water conveying mechanism;

and one end of the second water pipe is connected to the lower end of the spiral circulating pipe, and the other end of the second water pipe is connected with a hot water discharge mechanism.

As a further scheme of the utility model: the lower end of the chimney is connected with a mounting base which is detachably connected with a smoke outlet of the equipment.

As a further scheme of the utility model: the water tank is characterized in that a cold water conveying mechanism is arranged on the mounting base and comprises a water tank, a first water pump is arranged on the upper side of the water tank, a fourth water pipe extending into the water tank is connected to the water inlet end of the first water pump, and the water outlet end of the first water pump is connected with the first water pipe.

As a further scheme of the utility model: the installation base is also provided with a hot water discharge mechanism which comprises a heat exchanger, and the second water pipe is connected with the input end of the heat exchanger.

As a further scheme of the utility model: and a water pipe III is connected between the output end of the heat exchanger and the water tank.

The embodiment of the utility model has the beneficial effects that:

the induced draft fan can fully contact the spiral circulating pipe when high-temperature flue gas is discharged upwards by arranging the spiral circulating pipe inside and introducing cold water flowing from top to bottom into the spiral circulating pipe, so that the temperature of the flue gas is reduced and the water temperature in the spiral circulating pipe is increased by exchanging heat between the pipe wall of the spiral circulating pipe and the cold water in the spiral circulating pipe; the flue gas temperature is reduced and then is discharged through the filtration of the filtration layer, so that the influence of high temperature on the filtration layer can be reduced, the service life of the filtration layer is prolonged, the frequent replacement of the filtration layer is avoided, and the labor intensity of workers can be reduced.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present utility model;

fig. 3 is a schematic structural view of a spiral circulation tube in the present utility model.

The reference numerals in the figures represent: 1. a chimney; 2. an air suction device; 3. a filter layer; 4. a spiral circulation tube; 5. a heat exchanger; 6. a water tank; 7. a water pump; 8. a first water pipe; 9. a second water pipe; 10. a third water pipe; 11. and a water pipe IV.

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.

Referring to fig. 1 to 3, the utility model discloses a high-temperature induced draft fan for a flue, which comprises a chimney 1, wherein the shape of the chimney 1 is not particularly limited, and in the embodiment of the utility model, the chimney 1 is formed by a hollow round table with a thin upper part and a thick lower part and a hollow cylinder communicated with the lower end of the round table; the lower end of the inner part of the chimney 1 is provided with the air suction device 2, the type of the air suction device 2 is not particularly limited, and the air suction device 2 only needs to meet the requirement of sucking the flue gas into the chimney 1 from the lower end of the chimney 1, for example, in the embodiment of the utility model, a high-speed fan is selected as the air suction device 2.

The filter layer 3 is detachably installed to the upper end of chimney 1, filter layer 3 links to each other with chimney 1 with threaded connection's mode, and filter layer 3 is located chimney 1 top, and the staff of being convenient for overhauls filter layer 3 when carrying out the dismouting fast, labour saving and time saving, convenient and fast. A spiral circulating pipe 4 is arranged between the filter layer 3 and the air suction device 2, and the spiral circulating pipe 4 is formed into a spiral shape with a thin upper part and a thick lower part by a pipeline, so that the shape of the spiral circulating pipe 4 is matched with that of the chimney 1; the upper end of the spiral circulation pipe 4 is connected with a first water pipe 8, the lower end of the spiral circulation pipe 4 is connected with a second water pipe 9, wherein one end of the first water pipe 8, which is far away from the spiral circulation pipe 4, is connected with a cold water conveying mechanism, and one end of the second water pipe 9, which is far away from the spiral circulation pipe 4, is connected with a hot water leading-out mechanism.

Further, the lower end of the chimney 1 is connected with a mounting base which is detachably connected with a smoke outlet of the device.

Specifically, when the applied equipment needs to carry out high-temperature smoke exhaust, the installation base is only required to be installed at the smoke exhaust port of the equipment in a threaded connection mode; the high-temperature flue gas discharged from the equipment enters the chimney 1 through the air suction effect of the air suction device 2, meanwhile, the first water pipe 8 continuously introduces cold water into the spiral circulation pipe 4, the cold water spirals down along the spiral circulation pipe 4, the flue gas moves in the chimney 1 from bottom to top, and the flue gas fully contacts the spiral circulation pipe 4 when passing through the spiral circulation pipe 4, so that the temperature of the flue gas is reduced through heat exchange between the pipe wall of the spiral circulation pipe 4 and the cold water in the spiral circulation pipe 4, the water temperature in the spiral circulation pipe 4 is increased, and finally the hot water is discharged downwards through the second water pipe 9; the flue gas temperature is reduced and then is filtered and discharged through the filter layer 3, so that the influence of high temperature on the filter layer 3 can be reduced, the service life of the filter layer 3 is prolonged, the filter layer 3 is prevented from being replaced frequently, and the labor intensity of workers can be reduced.

Further, the mounting base is provided with a cold water conveying mechanism, the cold water conveying mechanism comprises a water tank 6, a first water pump 7 is arranged on the upper side of the water tank 6, a water inlet end of the first water pump 7 is connected with a fourth water pipe 11 extending into the water tank 6, and a water outlet end of the first water pump 7 is connected with one end, far away from the spiral circulation pipe 4, of the first water pipe 8.

The water tank 6 is used for storing cold water, the first water pump 7 is started to pump the cold water into the first water pipe 8 through the fourth water pipe 11, and the first water pipe 8 continuously wants to introduce the cold water into the spiral circulation pipe 4.

Further, the installation base is also provided with a hot water leading-out mechanism which comprises a heat exchanger 5, and one end of the second water pipe 9, which is far away from the spiral circulation pipe 4, is connected with the input end of the heat exchanger 5.

After entering the heat exchanger 5 through the second water pipe 9, the hot water is converted into cold water through energy conversion under the action of the heat exchanger 5.

Further, a water pipe III 10 is connected between the output end of the heat exchanger 5 and the water tank 6.

Cold water from the heat exchanger 5 flows back to the water tank 6 through the water pipe III 10 for recycling, so that the water consumption in the whole process is kept in a stable range, and the resource saving is facilitated.

The working principle of the utility model is as follows:

when the applied equipment needs to carry out high-temperature smoke discharge, the installation base is only required to be installed at a smoke outlet of the equipment in a threaded connection mode; the high-temperature flue gas discharged from the equipment enters the chimney 1 through the air suction effect of the air suction device 2, meanwhile, the first water pipe 8 continuously introduces cold water into the spiral circulation pipe 4, the cold water spirals down along the spiral circulation pipe 4, the flue gas moves in the chimney 1 from bottom to top, and the flue gas fully contacts the spiral circulation pipe 4 when passing through the spiral circulation pipe 4, so that the temperature of the flue gas is reduced through heat exchange between the pipe wall of the spiral circulation pipe 4 and the cold water in the spiral circulation pipe 4, the water temperature in the spiral circulation pipe 4 is increased, and finally the hot water is discharged downwards through the second water pipe 9; the flue gas temperature is reduced and then is filtered and discharged through the filter layer 3, so that the influence of high temperature on the filter layer 3 can be reduced, the service life of the filter layer 3 is prolonged, the filter layer 3 is prevented from being replaced frequently, and the labor intensity of workers can be reduced.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. The utility model provides a flue high temperature draught fan, includes chimney (1), the inside lower extreme of chimney (1) is provided with induced draft ware (2), its characterized in that still includes

The filter layer (3) is detachably arranged at the top end of the chimney (1);

the spiral circulation pipe (4) is arranged in the chimney (1), and the spiral circulation pipe (4) is positioned between the air suction device (2) and the filter layer (3);

one end of the first water pipe (8) is connected with the upper end of the spiral circulating pipe (4), and the other end of the first water pipe is connected with a cold water conveying mechanism;

and one end of the second water pipe (9) is connected to the lower end of the spiral circulation pipe (4), and the other end of the second water pipe is connected with a hot water discharge mechanism.

2. The high-temperature induced draft fan for the flue according to claim 1, wherein the lower end of the chimney (1) is connected with a mounting base, and the mounting base is detachably connected with a flue outlet of the equipment.

3. The high-temperature induced draft fan for the flue according to claim 2, wherein the cold water conveying mechanism is arranged on the mounting base and comprises a water tank (6), a first water pump (7) is arranged on the upper side of the water tank (6), a fourth water pipe (11) extending into the water tank (6) is connected to the water inlet end of the first water pump (7), and the water outlet end of the first water pump (7) is connected with the first water pipe (8).

4. A flue high temperature induced draft fan according to claim 3, wherein the mounting base is further provided with a hot water discharge mechanism comprising a heat exchanger (5), and the second water pipe (9) is connected with the input end of the heat exchanger (5).

5. The high-temperature induced draft fan for the flue according to claim 4, wherein a water pipe III (10) is connected between the output end of the heat exchanger (5) and the water tank (6).