CN215444489U

CN215444489U - Draught fan for boiler

Info

Publication number: CN215444489U
Application number: CN202121950102.1U
Authority: CN
Inventors: 庄海军
Original assignee: Jiangsu Dole Thermal Energy Equipment Co ltd
Current assignee: Jiangsu Dole Thermal Energy Equipment Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-01-07
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses an induced draft fan for a boiler, which comprises an induced draft fan body, a motor, a base, an air inlet pipe and an air outlet pipe, wherein the motor is fixed on the left side of the induced draft fan body, the induced draft fan body is fixed at the upper end of the base, the air outlet pipe is fixed on the right side of the induced draft fan body, and a heating water tank is fixed on the base on the right side of the induced draft fan body. According to the utility model, through the plurality of groups of filter screens in the fixed sleeve, impurities in air can be effectively filtered, the impurities are prevented from being attached to equipment, meanwhile, the impurities and the like are prevented from entering the boiler and causing danger in combustion, the connecting pipe and the air inlet pipe can be quickly disassembled through the fixed sleeve in threaded connection, further, the filter screens can be quickly disassembled and replaced, and the telescopic connecting pipe can be used for avoiding the condition that the air inlet pipe needs to be disassembled when the air inlet pipe is connected with other equipment through the connecting seat, so that the disassembling steps are simplified, and the operation of personnel is facilitated.

Description

Draught fan for boiler

Technical Field

The utility model relates to the technical field of boiler equipment, in particular to an induced draft fan for a boiler.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. In the operation of boiler, need cooperate with the boiler through auxiliary device and use, increase the work efficiency of boiler, also play the operation of environmental protection, wherein the supporting use of draught fan and boiler sends into air (oxygen) through the draught fan to the boiler inside, then can improve the inside combustion efficiency of boiler for fuel burning is more abundant.

However, when the existing induced draft fan is used, not only are impurities carried in external air easily attached to equipment, but also the equipment is easily corroded for a long time, and the service life of the equipment is shortened, so that the induced draft fan for the boiler is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an induced draft fan for a boiler, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a draught fan for boiler, includes draught fan body, motor, base, air-supply line and play tuber pipe, the motor is fixed in draught fan body left side, the draught fan body is fixed in the base upper end, it fixes on draught fan body right side to go out the tuber pipe, be fixed with the heating water tank on the base on draught fan body right side, it twines and is fixed with the heat conduction water pipe to go out tuber pipe side, heat conduction water pipe both ends are connected with the heating water tank, draught fan body front side air intake department welded fastening has the guide pin bushing, swing joint has the connecting pipe in the guide pin bushing, the connecting pipe front portion has fixed cover through threaded connection, fixed cover and air-supply line rear portion threaded connection, fixed cover inside is fixed with the multiunit filter screen.

Preferably, the front part of the air inlet pipe and the right part of the air outlet pipe are fixedly welded with connecting seats, and connecting holes are processed on the connecting seats.

Preferably, the rear part of the side surface of the connecting pipe is movably connected with a connecting ring, the side surface of the connecting ring is annular and is fixedly provided with connecting blocks at equal intervals, the connecting blocks are slidably connected with a limiting groove formed in the guide sleeve, a spring is fixed at the rear part of the connecting blocks, and the other end of the spring is fixedly connected with the inside of the limiting groove.

Preferably, external threads are machined on the front portion of the connecting pipe and the rear portion of the air inlet pipe, internal threads are machined on the front portion and the inner rear portion of the fixing sleeve, and the connecting pipe and the air inlet pipe are connected with the fixing sleeve through the internal threads and the external threads.

Preferably, a first sealing ring is fixedly bonded on the inner wall of the guide sleeve, a second sealing ring is fixedly bonded on the front portion of the connecting pipe, and a third sealing ring is fixedly bonded on the rear portion of the air inlet pipe.

Preferably, the filter screen is provided with more than two groups, and the aperture of the filter screen is gradually reduced from front to back.

Compared with the prior art, the utility model has the beneficial effects that: an induced draft fan for a boiler is provided,

1. through the multiple groups of filter screens in the fixed sleeve, impurities in air can be effectively filtered, the impurities are prevented from being attached to equipment, meanwhile, the impurities and the like are prevented from entering the boiler and being dangerous to burn, the connecting pipe and the air inlet pipe can be quickly disassembled through the fixed sleeve in threaded connection, the filter screens can be quickly disassembled and replaced, in addition, when the air inlet pipe is connected with other equipment through the connecting seat through the telescopic connecting pipe, the condition that the air inlet pipe needs to be disassembled is avoided, the disassembling steps are simplified, and the personnel operation is facilitated;

2. through heating water tank and the heat conduction water pipe on base right side, can heat out the tuber pipe, and then can preheat through the exhaust air of play tuber pipe to through the fuel burning in the hot-air auxiliary boiler, it is more convenient to use.

Drawings

FIG. 1 is a schematic view of the overall front cross-sectional structure of the present invention;

FIG. 2 is a schematic top view of the connection structure of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the connection structure of the guide sleeve, the connection pipe, the fixing sleeve and the air inlet pipe of the present invention;

FIG. 5 is a schematic cross-sectional view of the fixing cover of the present invention;

fig. 6 is a schematic view of the connection structure of the connection pipe and the connection block according to the present invention.

In the figure: 1. a draught fan body; 2. a motor; 3. a base; 4. an air inlet pipe; 5. a heat conducting water pipe; 6. an air outlet pipe; 7. heating the water tank; 8. a guide sleeve; 9. fixing a sleeve; 10. a connecting ring; 11. a spring; 12. filtering with a screen; 13. a connecting pipe; 14. and (4) connecting the blocks.

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, the present invention provides a technical solution: the utility model provides a draught fan for boiler, including draught fan body 1, motor 2, base 3, air-supply line 4 and play tuber pipe 6, motor 2 is fixed in 1 left side of draught fan body, draught fan body 1 is fixed in 3 upper ends of base, it fixes on 1 right side of draught fan body to go out tuber pipe 6, be fixed with heating water tank 7 on the base 3 on 1 right side of draught fan body, it is fixed with heat conduction water pipe 5 to go out 6 side winding of tuber pipe, heat conduction water pipe 5 both ends are connected with

heating water tank

7, 1 front side air intake department welded fastening of draught fan body has guide pin bushing 8, swing joint has connecting pipe 13 in the guide pin bushing 8, there is fixed cover 9 connecting pipe 13 front portion through threaded connection, fixed

cover

9 and 4 rear portion threaded connection of air-supply line, fixed cover 9 is inside to be fixed with multiunit filter screen 12.

In the utility model, the front part of the air inlet pipe 4 and the right part of the air outlet pipe 6 are fixedly welded with the connecting seats, and the connecting seats are processed with the connecting holes, so that the air inlet pipe can be conveniently connected with other external auxiliary equipment through the connecting seats and the connecting holes.

According to the utility model, the connecting ring 10 is movably connected to the rear part of the side surface of the connecting pipe 13, the connecting blocks 14 are fixed to the side surface of the connecting ring 10 in an annular shape at equal intervals, the connecting blocks 14 are in sliding connection with the limiting grooves formed in the guide sleeve 8, the spring 11 is fixed to the rear part of the connecting blocks 14, the other end of the spring 11 is fixedly connected with the inside of the limiting grooves, the connecting pipe 13 can be pushed forwards through the spring 11, the connecting pipe can be conveniently connected with the fixed sleeve 9, and the situation that the connecting ring 10 rotates along with the connecting pipe 13 and damages the spring 11 are avoided through the limiting grooves and the connecting blocks 14.

In the utility model, external threads are respectively processed at the front part of the connecting pipe 13 and the rear part of the air inlet pipe 4, internal threads are respectively processed at the front part and the rear part in the fixing sleeve 9, the connecting pipe 13 and the air inlet pipe 4 are connected with the fixing sleeve 9 through the internal threads and the external threads, and the fixing sleeve 9 is convenient to disassemble and assemble through the internal threads and the external threads.

According to the utility model, the first sealing ring is bonded and fixed on the inner wall of the guide sleeve 8, the second sealing ring is bonded and fixed on the front part of the connecting pipe 13, the third sealing ring is bonded and fixed on the rear part of the air inlet pipe 4, and the gaps between the pipelines can be sealed through the three groups of sealing rings, so that the sealing effect is improved.

In the utility model, more than two groups of filter screens 12 are arranged, and the aperture of each filter screen 12 is gradually reduced from front to back, thereby improving the filtering effect on impurities in the air.

The working principle is as follows: when in normal use, the equipment is positioned at a designated position and can be connected with other equipment through the connecting seat according to use requirements, impurities in the air can be effectively filtered through the multiple groups of filter screens 12 in the fixed sleeve 9, the impurities are prevented from being attached to the equipment and entering the boiler to cause dangerous combustion, the air outlet pipe 6 can be heated through the heating water tank 7 and the heat conduction water pipe 5 on the right side of the base 3, the air exhausted through the air outlet pipe 6 can be preheated, so that the fuel combustion in the boiler is assisted through hot air, the use is more convenient, when the filter screens 12 are blocked, the fixed sleeve 9 can be separated from the air inlet pipe 4 through threads, and when the fixed sleeve 9 is rotated, the fixed sleeve 9 drives the connecting pipe 13 to rotate, the connecting pipe 13 is simultaneously pushed to move towards the guide sleeve 8 until the fixed sleeve 9 is separated from the air inlet pipe 4, then, the fixed sleeve 9 and the connecting pipe 13 are rotated to be separated, so that the fixed sleeve 9 can be taken down, the filter screen 12 is disassembled, the telescopic connecting pipe 13 can avoid the condition that the air inlet pipe 4 needs to be disassembled when the air inlet pipe 4 is connected with other equipment through the connecting seat, the disassembling steps are simplified, the operation of personnel is facilitated, the working process of the whole device is realized, and the content which is not described in detail in the specification belongs to the prior art which is known by the professional technical personnel in the field.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an draught fan for boiler, includes draught fan body (1), motor (2), base (3), air-supply line (4) and play tuber pipe (6), its characterized in that: motor (2) are fixed in draught fan body (1) left side, draught fan body (1) is fixed in base (3) upper end, it fixes on draught fan body (1) right side to go out tuber pipe (6), be fixed with heating water tank (7) on base (3) on draught fan body (1) right side, it is fixed with heat conduction water pipe (5) to go out tuber pipe (6) side winding, heat conduction water pipe (5) both ends are connected with heating water tank (7), draught fan body (1) front side air intake department welded fastening has guide pin bushing (8), swing joint has connecting pipe (13) in guide pin bushing (8), connecting pipe (13) front portion has fixed cover (9) through threaded connection, fixed cover (9) and air-supply line (4) rear portion threaded connection, fixed cover (9) inside is fixed with multiunit filter screen (12).

2. The induced draft fan for the boiler according to claim 1, wherein: the air inlet pipe (4) front part and the air outlet pipe (6) right part are respectively welded and fixed with a connecting seat, and a connecting hole is processed on the connecting seat.

3. The induced draft fan for the boiler according to claim 1, wherein: connecting pipe (13) side rear portion swing joint has go-between (10), go-between (10) side is the annular and equidistance is fixed with connecting block (14), the inside spacing groove sliding connection who offers of connecting block (14) and guide pin bushing (8), connecting block (14) rear portion is fixed with spring (11), spring (11) other end and spacing inslot fixed connection.

4. The induced draft fan for the boiler according to claim 1, wherein: external screw threads are processed on the front portion of the connecting pipe (13) and the rear portion of the air inlet pipe (4), internal screw threads are processed on the front portion and the inner rear portion of the fixing sleeve (9), and the connecting pipe (13) and the air inlet pipe (4) are connected with the fixing sleeve (9) through the internal screw threads and the external screw threads.

5. The induced draft fan for the boiler according to claim 1, wherein: a first sealing ring is fixedly bonded on the inner wall of the guide sleeve (8), a second sealing ring is fixedly bonded on the front portion of the connecting pipe (13), and a third sealing ring is fixedly bonded on the rear portion of the air inlet pipe (4).

6. The induced draft fan for the boiler according to claim 1, wherein: the filter screen (12) is equipped with more than two sets of, and filter screen (12) aperture reduces gradually backward in the past.