CN215411962U - Draught fan mounted at tail end of boiler - Google Patents

Abstract

The utility model relates to the technical field of draught fans, in particular to a draught fan arranged at the tail end of a boiler, which comprises a draught fan body, an adjusting pipe and a turbine, wherein the adjusting pipe is inserted into an air outlet of the draught fan body, a worm is inserted into the outer surface of the adjusting pipe, the outer surface of the worm is meshed and connected with the turbine, a limiting rod is inserted into the outer surface of the adjusting pipe, one end of the limiting rod penetrates through the outer surface of the adjusting pipe, a clamping groove is formed in the outer surface of the limiting rod, a sliding block is inserted into the clamping groove, a sliding rail is formed in the outer surface of the adjusting pipe, the sliding block is arranged in the sliding rail, a baffle is clamped on the inner wall of the adjusting pipe, and a rotating shaft penetrates through the baffle. The utility model optimizes the structure of the air outlet, can conveniently adjust the size of the air outlet, can filter the exhausted air, is convenient to disassemble and clean, and is beneficial to prolonging the service life of the induced draft fan at the tail end of the boiler.

Description

Draught fan mounted at tail end of boiler

Technical Field

The utility model relates to the technical field of induced draft fans, in particular to an induced draft fan arranged at the tail end of a boiler.

Background

The induced draft fan is a device which generates negative pressure through rotation of an impeller and then extracts air from a system (device), is generally installed at the tail end of a boiler and is used for extracting hot flue gas in a hearth, and in daily life, a ventilator is generally divided into the induced draft fan (used under negative pressure) and an air blower (used under positive pressure) according to different positive and negative pressure use modes.

The existing draught fan arranged at the tail end of a boiler has the defect that the air output cannot be controlled in the using process, dust in air cannot be filtered, long-time air induction can lead to more dust in an air induction port, a pipeline is easily covered by the dust, and the draught fan is not easy to clean and is not beneficial to the use of the draught fan.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an induced draft fan arranged at the tail end of a boiler so as to solve the problems that the air quantity cannot be controlled and dust cannot be filtered in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an install draught fan at boiler tail end, includes draught fan body, regulating tube and turbine, insert in the air outlet of draught fan body and be equipped with the regulating tube, and the inner wall of draught fan body and the surface fixed connection of regulating tube, the surface of regulating tube is inserted and is equipped with the worm, the surface meshing of worm is connected with the turbine, the inside of turbine is inserted and is equipped with the pivot, and the inner wall and the pivot fixed connection of turbine, the flabellum has been cup jointed to the surface of pivot, the surface of regulating tube is inserted and is equipped with the gag lever post, and the one end of gag lever post wears the surface that sees through the regulating tube to the draw-in groove has been seted up to the surface of gag lever post, the inside slider of being inserted of draw-in groove, the slide rail has been seted up to the surface of regulating tube to the slider sets up in the slide rail, the inner wall joint of regulating tube has the baffle, and the pivot pierces through the baffle.

Preferably, the outer surface of the draught fan body is inserted with a filter cartridge, the outer surface of the filter cartridge is provided with a limiting groove, a spring buckle is inserted in the limiting groove, and the spring buckle penetrates through an air induction port of the draught fan body.

Preferably, one end of the sliding block is fixedly connected with a pressure spring, and the inner wall of the sliding rail is fixedly connected with the upper surface of the pressure spring.

Preferably, the outer surface cover of worm is equipped with the rubber pad, and the rubber pad setting is in the outside of adjusting tube.

Preferably, the slider is L-shaped, and the lower end of the slider penetrates through the clamping groove.

Preferably, three fan-shaped penetrating air outlets are formed in the surface of the baffle, and the surface area of the blades of the fan blades is larger than that of the fan-shaped air outlets.

Compared with the prior art, the utility model has the beneficial effects that: the structure of the air outlet is optimized, the size of the outlet air can be conveniently adjusted, the discharged air can be filtered, the air outlet device is convenient to disassemble and clean, and the service life of a draught fan at the tail end of a boiler can be prolonged;

1. the adjusting pipe and the fan blades are arranged, so that the discharged air can control the air output, and the fan blades can be limited to rotate under the applicable condition, so that the draught fan has higher practicability;

2. through the installation cartridge filter, can be when the induced air, impurity that has in the adhesion filter screen filtration wind through the cartridge filter inner wall makes cleaner wind can follow air outlet department and discharges to can make cartridge filter convenient to detach wash through the installation snak link, thereby reach the certain effect of environmental protection.

Drawings

FIG. 1 is a schematic front perspective view of the present invention;

FIG. 2 is a schematic sectional view of an air outlet in the present invention;

FIG. 3 is a schematic top sectional view of a structural outlet according to the present invention;

FIG. 4 is a schematic top view of the structure of the present invention

FIG. 5 is an enlarged view of the structure A in FIG. 2 according to the present invention;

FIG. 6 is a schematic sectional view of the filter device of the present invention.

In the figure: 1. a draught fan body; 2. an adjusting tube; 3. a worm; 4. a turbine; 5. a rotating shaft; 6. a fan blade; 7. a limiting rod; 8. a card slot; 9. a slider; 10. a pressure spring; 11. a slide rail; 12. a baffle plate; 13. a filter cartridge; 14. a limiting groove; 15. and a spring buckle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown:

an induced draft fan arranged at the tail end of a boiler comprises an induced draft fan body 1, an adjusting pipe 2 and a turbine 4, the adjusting pipe 2 is inserted in an air outlet of the induced draft fan body 1, the inner wall of the draught fan body 1 is fixedly connected with the outer surface of the adjusting pipe 2, the outer surface of the adjusting pipe 2 is inserted with a worm 3, the outer surface of the worm 3 is engaged with a turbine 4, the inner part of the turbine 4 is inserted with a rotating shaft 5, the inner wall of the turbine 4 is fixedly connected with the rotating shaft 5, the outer surface of the rotating shaft 5 is sleeved with the fan blades 6, the outer surface of the adjusting pipe 2 is inserted with the limiting rod 7, one end of the limiting rod 7 penetrates through the outer surface of the adjusting pipe 2, the outer surface of the limiting rod 7 is provided with a clamping groove 8, a sliding block 9 is inserted in the clamping groove 8, the outer surface of the adjusting pipe 2 is provided with a sliding rail 11, the slide block 9 is arranged in the slide rail 11, the inner wall of the adjusting pipe 2 is clamped with a baffle 12, and the rotating shaft 5 penetrates through the baffle 12;

further, a filter cartridge 13 is inserted into the outer surface of the draught fan body 1, a limiting groove 14 is formed in the outer surface of the filter cartridge 13, a spring buckle 15 is inserted into the limiting groove 14, the spring buckle 15 penetrates through the air induction port of the draught fan body 1, and the filter cartridge 13 can be fixed by arranging the spring buckle 15 in the limiting groove 14;

furthermore, one end of the sliding block 9 is fixedly connected with a pressure spring 10, the inner wall of the sliding rail 11 is fixedly connected with the upper surface of the pressure spring 10, and the sliding block 9 can have elasticity by arranging the pressure spring 10 to be fixedly connected with the inner wall of the sliding rail 11;

furthermore, a rubber pad is sleeved on the outer surface of the worm 3 and arranged outside the adjusting pipe 2, and friction force between the worm 3 and a hand can be increased during rotation by arranging the rubber pad on the outer surface of the worm 3;

furthermore, the slide block 9 is L-shaped, the lower end of the slide block 9 penetrates through the clamping groove 8, and the slide block 9 can limit the limiting rod 7 by arranging the L-shaped slide block;

furthermore, three fan-shaped penetrating air outlets are formed in the surface of the baffle 12, the surface area of each blade of each fan blade 6 is larger than that of each fan-shaped air outlet, and the three fan-shaped penetrating air outlets in the surface of the baffle 12 enable the fan blades 6 to penetrate through the baffle 12 when rotating.

The working principle is as follows: in the use process of the device, the external connecting pipe sleeve is sleeved at the air induction port to start air induction, when air passes through the air induction port, the air passes through the filter cylinder 13, the filter cylinder 13 filters dust and impurities in the air, cleaner air is led to the air outlet, when the air comes out of the air outlet, the worm 3 can be rotated to drive the turbine 4, the turbine 4 can drive the fan blades 6 to rotate, the baffle plate 12 is fixed on the inner wall of the adjusting pipe 2, the gap between the fan blades 6 and the baffle plate 12 can be adjusted to control the size of the air outlet, when the applicable air volume is adjusted, the limiting rod 7 can be downwards blocked by the turbine 4 to rotate, when the air induction is not needed, the spring buckle 15 is firstly pulled open towards two sides, the limiting of the filter cylinder 13 is removed, the filter cylinder 13 is taken out to be cleaned, the limiting rod 7 is pulled outwards, the sliding block 9 is inserted into the clamping groove 8 to limit the limiting rod 7, the optimization that makes the device both can adjust the amount of wind size, can guarantee again that exhaust wind is comparatively clean, and the device convenient to detach washs simultaneously, when guaranteeing draught fan life extension, can have certain environmental protection's effect.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides an install draught fan at boiler tail end, includes draught fan body (1), governing pipe (2) and turbine (4), its characterized in that: the air outlet of the draught fan body (1) is inserted with an adjusting pipe (2), the inner wall of the draught fan body (1) is fixedly connected with the outer surface of the adjusting pipe (2), the outer surface of the adjusting pipe (2) is inserted with a worm (3), the outer surface of the worm (3) is meshed with a turbine (4), a rotating shaft (5) is inserted in the turbine (4), the inner wall of the turbine (4) is fixedly connected with the rotating shaft (5), fan blades (6) are sleeved on the outer surface of the rotating shaft (5), a limiting rod (7) is inserted in the outer surface of the adjusting pipe (2), one end of the limiting rod (7) penetrates through the outer surface of the adjusting pipe (2), a clamping groove (8) is formed in the outer surface of the limiting rod (7), a sliding block (9) is inserted in the clamping groove (8), a sliding rail (11) is formed in the outer surface of the adjusting pipe (2), and slider (9) set up in slide rail (11), the inner wall joint of regulating tube (2) has baffle (12), and pivot (5) pierce through baffle (12).

2. The induced draft fan installed at the tail end of the boiler according to claim 1, wherein: the outer surface of draught fan body (1) is inserted and is equipped with cartridge filter (13), spacing groove (14) have been seted up to cartridge filter (13) surface, spacing groove (14) inside is inserted and is equipped with spring buckle (15), and spring buckle (15) run through the induced air mouth of draught fan body (1).

3. The induced draft fan installed at the tail end of the boiler according to claim 1, wherein: one end of the sliding block (9) is fixedly connected with a pressure spring (10), and the inner wall of the sliding rail (11) is fixedly connected with the upper surface of the pressure spring (10).

4. The induced draft fan installed at the tail end of the boiler according to claim 1, wherein: the outer surface cover of worm (3) is equipped with the rubber pad, and the rubber pad setting is in the outside of adjusting tube (2).

5. The induced draft fan installed at the tail end of the boiler according to claim 1, wherein: the slider (9) is L-shaped, and the lower end of the slider (9) penetrates through the clamping groove (8).

6. The induced draft fan installed at the tail end of the boiler according to claim 1, wherein: three fan-shaped penetrating air outlets are formed in the surface of the baffle (12), and the surface area of the blades of the fan blades (6) is larger than that of the fan-shaped air outlets.

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