CN211822348U

CN211822348U - Furnace hood

Info

Publication number: CN211822348U
Application number: CN201922287620.9U
Authority: CN
Inventors: 孙元龙; 王忠列
Original assignee: Hangzhou Thermoelectric Hangmin Town Co ltd
Current assignee: Hangzhou Thermoelectric Hangmin Town Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-30
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a furnace hood, establish in the intake pipe and rotate the hood head of connecting in the intake pipe including intake pipe and cover, intake pipe and hood head pass through the bearing and connect, the intake pipe upper end is sealed, and a plurality of inlet ports have been seted up along its circumference in the upper end of intake pipe outer wall, establish the cavity of intercommunication inlet port in the hood head, hood head outer wall fixedly connected with spray tube, intercommunication cavity in the spray tube, the spray tube is L shape and on a horizontal plane, the spray tube has a plurality ofly along the distribution of intake pipe spool array. The air inlet pipe is connected with the blast cap head in a rotating mode, and the outer wall of the blast cap head is provided with a plurality of power-assisted rotating spray pipes, so that the effect of uniform air emission is achieved.

Description

Furnace hood

Technical Field

The utility model relates to a thermoelectric field, concretely relates to furnace hood.

Background

The boiler hood is one part of the boiler air distribution device, the air distribution device is an important component of the circulating fluidized bed boiler, and the air distribution device is used for enabling air to uniformly enter the cross section of the bottom of the boiling section so as to ensure the combustion of fuel at a good temperature in a boiling state. The air distribution device consists of an air distribution plate and a boiler hood. The wind cap has mushroom type, column type, ball type and umbrella type.

Chinese patent publication No. CN203309895U discloses a furnace funnel cap, which comprises a cap body, wherein a cavity is arranged inside the cap body, the upper parts of the cap body and the cavity are both of a conical structure, and the lower parts thereof are both of a cylindrical structure; the upper part of the cylindrical structure of the cap body is provided with an upper air outlet and a lower air outlet which are circumferentially distributed on the cap body; the central line of the air outlet hole of the upper circle of the two circles is vertical to the axis of the cap body and is horizontally arranged; the central line of the air outlet hole of the lower circle of the two circles forms an included angle with the axis of the cap body, and the central line faces downwards along the axis. When the air blower of the producer sends air into the hearth through the air chamber and the blast cap, the fuel is blown to be in a boiling state, and the upper parts of the cap body and the cavity are in a conical structure, so that the fuel is not easy to stay at the upper part, and the fuel is not easy to block and coke at the upper part. The air outlet hole is surrounded at the bottom of the conical structure, so that the air outlet hole is not easy to be blocked, the ventilation effect is good, the boiling of the producer is facilitated, further, the fuel can be fully combusted, and the problems of blockage and coking caused by frequent shutdown treatment are avoided.

When the boiler hood is used, air enters the hearth from the air outlet holes, and the air is discharged unevenly in the hearth due to the fixed positions and the spaced arrangement of the air outlet holes, so that fuel is combusted unevenly, and the overall operation of equipment is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a furnace hood, the rotation of intake pipe and hood head is connected to set up a plurality of helping hand pivoted spray tubes at hood head outer wall, reach the effect that the air evenly discharged.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a furnace hood, includes that intake pipe and cover establish in the intake pipe and rotate the hood head of connecting in the intake pipe, intake pipe and hood head pass through the bearing and connect, the intake pipe upper end is sealed, and a plurality of inlet ports have been seted up along its circumference in the upper end of intake pipe outer wall, establish the cavity of intercommunication inlet port in the hood head, hood head outer wall fixedly connected with spray tube, intercommunication cavity in the spray tube, the spray tube is L shape and on a horizontal plane, the spray tube has a plurality ofly along intake pipe axle linear array to distribute.

By adopting the technical scheme, when the air is ventilated into the air inlet pipe, a large amount of air enters the cavity through the air inlet hole and then respectively enters each spray pipe from the cavity. When the air is sprayed out of each spray pipe, the spraying directions of the adjacent spray pipes are close and are in the same horizontal plane, so that the air sprayed in each spray pipe forms a rotational flow to drive the hood head to rotate reversely. The air injection direction is distributed in all directions of the horizontal plane, and the effect of uniform air discharge is improved.

The utility model discloses a further set up to: the air inlet pipe is internally and slidably connected with a sliding block along the vertical direction, the sliding block is abutted to the inner wall of the air inlet pipe and blocks the air inlet hole, the lower end of the sliding block is fixedly connected with a reset spring, and one end of the reset spring, far away from the sliding block, is fixedly connected to the inner wall of the air inlet pipe.

By adopting the technical scheme, when the air in the air inlet pipe reaches a certain pressure, the pressure at the lower end of the sliding block is greater than the pressure at the upper end of the sliding block communicated with the cavity, so that the sliding block slides upwards, and the return spring is stretched. When the sliding block slides to the air inlet pipe to communicate with the cavity, air in the air inlet pipe is pressed out, and the air cap head can be driven to rotate quickly due to the fact that the pressure in the cavity is high, so that the purpose of discharging air is achieved.

The utility model discloses a further set up to: the blast cap head is including rotating the connector of connecting on the fixing base and threaded connection of connecting in the fixing base of intake pipe, the spray tube is installed in connector week side.

By adopting the technical scheme, the environment of the blast cap is in the furnace, and a large amount of furnace dust is generated. The connector can be dismantled and connect in the fixing base, when clean hood head, unscrew the connector clear up can. Great convenience is provided for users, and economic benefits are improved.

The utility model discloses a further set up to: the lower end of the connector on the inner wall of the cavity is fixedly provided with an ash collecting pipe with an upper end opening along the circumferential direction.

Through adopting above-mentioned technical scheme, the furnace intracavity is arranged in to the hood, has a little ash to get into in the cavity, because the lower extreme of spray tube export is arranged in to the ash collecting pipe, when the ash gets into the cavity, is collected by the ash collecting pipe behind the spray tube exit end. When the cleaning machine is used for cleaning, the connector can be unscrewed, and the cleaning machine is very convenient.

The utility model discloses a further set up to: the upper end of the connector is in a hemispherical shape protruding upwards.

Through adopting above-mentioned technical scheme, the connector upper end is bellied sphere, even the difficult clearance of stove environment, the connector of this shape very conveniently clears up, does not have the corner of storing the spot.

The utility model discloses a further set up to: one end of the spray pipe, which is far away from the blast cap, is in threaded connection with a spray head, and a plurality of small holes are formed in the end part of the spray head.

Through adopting above-mentioned technical scheme, compare in the direct air outlet of spray tube, the installation of shower nozzle has reduced the probability that the dust got into the cavity. In addition, the end part of the spray head is provided with the small air outlet holes, so that the air outlet direction is dispersed, the air flow path is more, and the air injection range is larger.

The utility model discloses a further set up to: the upper end of the air inlet pipe is provided with a dome.

Through adopting above-mentioned technical scheme, behind the dust entering cavity, have the part and fall on the intake pipe upper end, the setting of calotte has some dust to fall down from the calotte, is collected at the ash collecting pipe. Bringing convenience to the user.

The utility model discloses a further set up to: the hood head is fixedly connected to the air inlet pipe, a plurality of air outlet pipes are fixedly connected to the side wall of the hood head along the circumferential direction of the side wall of the hood head, one end of the air outlet pipe, away from the hood head, is inclined downwards, and the size of the air outlet end of the inner wall of the air outlet pipe is larger than that of the air inlet end.

By adopting the technical scheme, air enters the cavity from the discharge pipe and then rushes out from the air outlet pipe. One end of the air outlet pipe, which is far away from the blast cap head, is inclined downwards, so that the probability of dust entering the cavity is reduced. The size of the opening end is larger than that of the other end, so that the air outlet range from the air to the end part is enlarged, and the air outlet range is enlarged.

The utility model has the advantages of it is following:

1. the air inlet pipe is connected with the blast cap head in a rotating mode, and the outer wall of the blast cap head is provided with a plurality of power-assisted rotating spray pipes, so that the effect of uniform air emission is achieved.

2. The connector can be dismantled and connect in the fixing base, when clean hood head, unscrew the connector clear up can.

Drawings

FIG. 1 is a first isometric view of a first embodiment;

FIG. 2 is a sectional view of the first embodiment;

FIG. 3 is an enlarged view of FIG. 1 at A;

FIG. 4 is an isometric view of a second embodiment;

FIG. 5 is a sectional view of the second embodiment.

Reference numerals: 10. a hood head; 101. a fixed seat; 102. a connector; 11. an ash collecting pipe; 12. a cavity; 20. a nozzle; 21. a spray head; 22. a small hole; 30. an air inlet pipe; 31. a dome; 32. an air inlet; 40. a pressurizing assembly; 41. a slider; 42. a return spring; 43. a fixing member; 50. and an air outlet pipe.

Detailed Description

The first embodiment is as follows:

a hearth hood is shown in figures 1 and 2 and comprises an air inlet pipe 30 and a hood head 10 coaxially sleeved on the air inlet pipe 30, and the hood head 10 is horizontally and rotatably connected to the air inlet pipe 30 through a bearing. The upper end of the air inlet pipe 30 is provided with a dome 31, the peripheral wall of the air inlet pipe 30 is provided with a plurality of air inlet holes 32 communicated with the inside, and the air inlet holes 32 are uniformly arranged along the circumferential direction. The interior of the blast cap head 10 is provided with a cavity 12 communicated with an air inlet 32, the outer wall of the blast cap head 10 is fixedly connected with a spray pipe 20, and the spray pipe 20 is communicated with the cavity 12. The spray pipes 20 are L-shaped and are arranged on a horizontal plane, and four spray pipes 20 are distributed along the axis of the air inlet pipe 30 in an array mode. As shown in fig. 3, a spray head 21 is connected to one end of the spray pipe 20 far away from the hood head 10 in a threaded manner, and a plurality of small holes 22 are formed at one end of the spray pipe 20 according to the principle that the end of the spray head 21 is provided with the spray pipe. As shown in fig. 2, a pressurizing assembly 40 for pressurizing air is installed in the intake duct 30.

When the air inlet pipe 30 is ventilated, the pressurizing assembly 40 pressurizes air, and the pressurized air fills the whole cavity 12 from the air inlet hole 32 and is sprayed out from each spray head 21. The exhaust directions of the adjacent spray pipes 20 are close and on a horizontal plane, and the air sprayed by each spray pipe 20 forms air rotational flow. The nozzle 20 is subjected to a counter-reaction force, so that the bonnet head 10 is driven to rotate in the opposite direction and the pressurized air is uniformly distributed in all directions.

Specifically, as shown in fig. 2, the pressurizing assembly 40 includes a slider 41, a return spring 42 and a fixing member 43, which are sequentially embedded in the air inlet pipe 30 from top to bottom, wherein the fixing member 43 is annular, and the outer peripheral wall of the fixing member is fixedly connected to the inner wall of the air inlet pipe 30. The upper end and the lower end of the return spring 42 are respectively fixedly connected to the sliding block 41 and the fixing part 43, the outer peripheral wall of the sliding block 41 is abutted to the inner wall of the air inlet pipe 30, and the sliding block 41 is slidably connected to the air inlet pipe 30 along the vertical direction. When the return spring 42 is in a normal state, the intake hole 32 is blocked by the slider 41.

During ventilation, air is filled from the lower end of the air inlet pipe 30, and the air cannot be discharged because the air inlet holes 32 are blocked by the sliding block 41, so that the air in the air inlet pipe 30 is continuously filled. At this time, the air pressure at the lower end of the intake pipe 30 is greater than the air pressure in the cavity 12, and therefore the slider 41 is pushed up and the return spring 42 is elongated. When the slider 41 is pushed up to the lower end of the air inlet pipe 30 to communicate with the air inlet hole 32, the air in the air inlet pipe 30 is discharged. After the ventilation is completed, the return spring 42 is returned to pull the slider 41 back to the initial position.

Specifically, as shown in fig. 2, the blast cap head 10 includes a fixed seat 101 rotatably connected to the air inlet pipe 30 and a connection head 102 screwed to the fixed seat 101, and the nozzle 20 is installed on the periphery of the connection head 102, and the screw thread direction is opposite to the direction of the nozzle 20. The connector 102 is in a spherical shape with an upward convex center, the lower end of the connector 102 is fixedly provided with the dust collecting pipe 11 along the circumferential direction on the inner wall of the cavity 12, the section of the dust collecting pipe 11 is in a T shape with an upward opening, and one side of the dust collecting pipe 11 far away from the connector 102 is abutted to the air inlet pipe 30.

A little dust enters the cavity 12 and is collected by the dust collecting pipe 11. When the blast cap head 10 is cleaned, the connector 102 is unscrewed, and the blast cap head is taken off to clean the inner wall and the dust collecting pipe 11. After cleaning, the connector 102 is screwed down again.

The working principle of the embodiment is as follows: during ventilation, air is filled from the lower end of the air inlet pipe 30, and the air cannot be discharged because the air inlet holes 32 are blocked by the sliding block 41, so that the air in the air inlet pipe 30 is continuously filled. At this time, the air pressure at the lower end of the intake pipe 30 is greater than the air pressure in the cavity 12, and therefore the slider 41 is pushed up and the return spring 42 is elongated. When the slider 41 is pushed up to the lower end of the air inlet pipe 30 to communicate with the air inlet hole 32, the air in the air inlet pipe 30 is discharged. The exhaust directions of the adjacent spray pipes 20 are close and on a horizontal plane, and the air sprayed by each spray pipe 20 forms air rotational flow. The nozzle 20 is subjected to a counter-reaction force, so that the bonnet head 10 is driven to rotate in the opposite direction and the pressurized air is uniformly distributed in all directions.

Example two:

the difference between the second embodiment and the first embodiment is that: as shown in fig. 4 and 5, the hood head 10 is sleeved on the air inlet pipe 30 and is fixedly connected to the air inlet pipe 30, the side wall of the hood head 10 is fixedly connected with an air outlet pipe 50, and six air outlet pipes 50 are obliquely inclined downwards and are arranged at equal intervals along the circumferential direction of the hood head 10 at one end of the air outlet pipe 50 far away from the hood head 10. The size of the outlet end of the inner wall of the outlet pipe 50 is larger than that of the inlet end.

The working principle of the embodiment is as follows: air enters the cavity 12 of the helmet head 10 through the air inlet pipe 30 and is discharged downward through the air outlet pipe 50.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a furnace hood, includes that intake pipe (30) and cover establish on intake pipe (30) and rotate the hood head (10) of connecting in intake pipe (30), characterized by: intake pipe (30) and blast cap head (10) pass through the bearing and connect, intake pipe (30) upper end is sealed, and a plurality of inlet ports (32) have been seted up along its circumference in the upper end of intake pipe (30) outer wall, establish cavity (12) of intercommunication inlet port (32) in blast cap head (10), blast cap head (10) outer wall fixedly connected with spray tube (20), spray tube (20) in-connection cavity (12), spray tube (20) are L shape and on a horizontal plane, spray tube (20) have a plurality ofly along intake pipe (30) axis array distribution.

2. A furnace hood as defined in claim 1, further comprising: the air inlet pipe is characterized in that a sliding block (41) is connected to the air inlet pipe (30) in a sliding mode along the vertical direction, the sliding block (41) is abutted to the inner wall of the air inlet pipe (30) and blocks the air inlet hole (32), a reset spring (42) is fixedly connected to the lower end of the sliding block (41), and one end of the reset spring (42) far away from the sliding block (41) is fixedly connected to the inner wall of the air inlet pipe (30).

3. A furnace hood as defined in claim 1, further comprising: the blast cap head (10) is including rotating connector (102) on fixing base (101) and threaded connection in fixing base (101) of intake pipe (30), nozzle (20) are installed in connector (102) week side.

4. A furnace hood as defined in claim 3 wherein: and the lower end of the inner wall connector (102) of the cavity (12) is fixedly provided with an ash collecting pipe (11) with an upper end opening along the circumferential direction.

5. A furnace hood as defined in claim 3 wherein: the upper end of the connector (102) is in a convex hemisphere shape.

6. A furnace hood as defined in claim 1, further comprising: one end, far away from the wind cap head (10), of the spray pipe (20) is in threaded connection with a spray head (21), and a plurality of small holes (22) are formed in the end portion of the spray head (21).

7. A furnace hood as defined in claim 1, further comprising: the upper end of the air inlet pipe (30) is provided with a dome (31).

8. A furnace hood as defined in claim 1, further comprising: the utility model discloses a fan cap, including hood head (10), hood head (10) fixed connection is in intake pipe (30), a plurality of outlet duct (50) of its circumference fixedly connected with are followed to hood head (10) lateral wall, the downward sloping of hood head (10) one end is kept away from in outlet duct (50), the end size of giving vent to anger of outlet duct (50) inner wall is greater than the inlet end.