CN214468751U

CN214468751U - Boiler combustion air supply device

Info

Publication number: CN214468751U
Application number: CN202120614712.8U
Authority: CN
Inventors: 白恩法; 任超; 刘涛
Original assignee: Jinan Huanqiu Heating Equipment Manufacturing Co ltd
Current assignee: Jinan Huanqiu Heating Equipment Manufacturing Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-10-22
Anticipated expiration: 2031-03-26

Abstract

The application relates to a boiler combustion air supply device, which belongs to the technical field of boilers and comprises an air box arranged in a boiler hearth, wherein a cavity is formed in the air box, a combustion area is formed in the upper surface of the air box, a plurality of air outlets are formed in the upper surface of the air box, the air outlets are positioned in the combustion area, and an air inlet used for supplementing air into the cavity is formed in the side wall of the air box; and the air supplementing pipe is used for supplementing oxygen to the area above the combustion area. When fuel burns in the combustion area, the air in the cavity is discharged from the venthole, carries out the air feed for fuel burning, then supplies oxygen to the combustion area through the air supply pipe again to carry out the secondary air feed for fuel burning, thereby improved the combustion effect of fuel, improved the insufficient condition of fuel burning.

Description

Boiler combustion air supply device

Technical Field

The application relates to the field of boilers, in particular to a boiler combustion air supply device.

Background

At present, in civil heating, a boiler is generally adopted to heat circulating water, so that heating of rural resident houses is realized.

The inventor thinks that the fuel in the boiler is often burnt insufficiently, thereby causing waste of resources.

SUMMERY OF THE UTILITY MODEL

In order to improve the situation that fuel burning is insufficient, the application provides a boiler burning air supply device.

The application provides a boiler combustion air supply device adopts following technical scheme:

a boiler combustion air supply device comprises an air box which is arranged in a boiler furnace, wherein a cavity is formed in the air box, a combustion area is arranged on the upper surface of the air box, a plurality of air outlet holes are formed in the upper surface of the air box, the air outlet holes are formed in the combustion area, and an air inlet for supplementing air into the cavity is formed in the side wall of the air box; and the air supplementing pipe is used for supplementing oxygen to the area above the combustion area.

Through adopting above-mentioned technical scheme, when fuel burnt in the combustion area, the air in the cavity was discharged from the venthole, carried out the air feed for fuel burning, then supplyed oxygen to the combustion area through the air supply pipe again to for fuel burning carries out the secondary air feed, thereby improved the combustion effect of fuel, improved the insufficient condition of fuel burning.

Optionally, one end of the air supply pipe is communicated with the atmosphere, the cavity in the air box or the blower.

Through adopting above-mentioned technical scheme, when external wind is great on the one hand, can directly get into in the air supply pipe and carry out the secondary air feed for fuel burning, when air supply pipe and cavity intercommunication, in the air part in the cavity can get into the air supply pipe, when air supply pipe and air-blower intercommunication, directly blow external air to in the air supply pipe through the air-blower to realize air supply pipe air inlet diversification.

Optionally, the air supply pipe comprises a horizontal pipe, the horizontal pipe is arranged above the air box, an air supply hole is formed in the horizontal pipe, and the air supply hole is aligned to the area above the combustion area.

Through adopting above-mentioned technical scheme, after the air admission pipe, discharge from the air supply hole, because the air supply hole aims at the top of combustion area, so can directly supply oxygen to fuel burning in the combustion area from the air that the air supply hole was given vent to anger to the combustion effect of fuel has been improved.

Optionally, the air supply holes are multiple and distributed along the length direction of the horizontal pipe.

Through adopting above-mentioned technical scheme, the purpose that sets up a plurality of air supplementing holes can be so that the comparatively even replenishment of oxygen is carried out to the combustion area to the air in the air supplement pipe.

Optionally, the air supply pipe comprises a communicating pipe communicated with the horizontal pipe, and one end of the communicating pipe, which is far away from the horizontal pipe, is communicated with the cavity in the air box.

Through adopting above-mentioned technical scheme, because communicating pipe and bellows intercommunication, consequently, some air in the bellows carries out the air feed for the combustion area once, and in another part gets into the communicating pipe, then get into in the air supplement pipe, carries out the secondary air feed for the combustion area to when improving fuel burning, again can resources are saved.

Optionally, one end of the communicating pipe, which is far away from the horizontal pipe, is communicated with an elbow, and one end of the elbow, which is far away from the communicating pipe, faces the air inlet.

By adopting the technical scheme, the bent pipe is arranged towards the air inlet, so that air entering the cavity enters the air supplementing pipe as much as possible, and the secondary air supply efficiency is improved.

Optionally, the diameters of the ends of the bent pipe and the communicating pipe, which are placed in the cavity, are both larger than the diameter of the horizontal pipe.

Through adopting above-mentioned technical scheme, set up the one end of arranging in the cavity communicating pipe and the big purpose of return bend diameter, increase the intake in return bend and the air supply pipe, set up the little purpose of the diameter of external air supply pipe, when keeping normal secondary air feed, can not influence staff's operation.

Optionally, the air box is provided with an air guide blower communicated with the air inlet.

Through adopting above-mentioned technical scheme, when supplying air in to the cavity, start the wind-guiding air-blower, the wind-guiding air-blower is automatic takes out the air of external world to the cavity in to automatically, carry out the air feed once to the fuel burning.

Optionally, an exhaust fan is arranged outside the air box and communicated with a smoke outlet of a boiler flue.

Through adopting above-mentioned technical scheme, start the air exhauster, when the air exhauster was taken out the cigarette that the fuel burning produced to the external world again, also can take out the air of external world to the cavity in simultaneously, the automation carries out the air feed once to the fuel burning.

Optionally, the horizontal tube is perpendicular to the fuel feed direction and is disposed at an end of the combustion zone adjacent to the feed.

Through adopting above-mentioned technical scheme, because during the fuel burning, the one end burning that is close to the feeding in the combustion area, consequently set up the horizontal pipe and change into perpendicular with fuel feeding direction for when making up the wind hole and carrying out the secondary air feed to the combustion area, can be comprehensive carry out the secondary air feed to the fuel burning, make the effect of secondary air feed reach the maximize.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the air supplementing pipe is arranged to supplement oxygen to the area above the combustion area, so that secondary air supply is performed on fuel combustion, the combustion effect of the fuel is improved, and the condition that the fuel is not combusted sufficiently is improved;

2. the bent pipe is arranged to face the air inlet, so that air entering the cavity enters the bent pipe as much as possible, and the secondary air supply efficiency is improved;

3. because during the fuel burning, be close to the one side burning of feeding at the combustion area, consequently with the horizontal pipe setting change into perpendicular with fuel feeding direction for when making up the wind hole and carrying out the secondary air feed to the combustion area, can be comprehensive carry out the secondary air feed to the fuel burning, make the effect of secondary air feed reach the maximize.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.

Fig. 2 is a schematic view of the overall structure of embodiment 2 of the present application.

Fig. 3 is a schematic view of the overall structure of embodiment 3 of the present application.

Description of reference numerals: 100. an air box; 110. a striker plate; 120. a combustion plate; 121. an air outlet; 130. a placement port; 140. a cavity; 141. an air inlet; 150. a wind guide blower; 160. a furnace body; 161. a combustion chamber; 162. a water chamber; 163. a flue; 164. an exhaust fan; 170. a combustion zone; 200. air supplementing pipes; 210. a horizontal tube; 211. air supplement holes; 220. a communicating pipe; 221. and (5) bending the pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses boiler burning air feed device.

Example 1

Referring to fig. 1, the boiler combustion air supply apparatus includes an air box 100 for installation in a furnace of a boiler, and an upper surface of the air box 100 is disposed obliquely downward. At the lower end of the upper surface of the windbox 100 is provided a combustion zone 170, and fuel may be transported from the upper end of the windbox 100 into the combustion zone 170 for combustion.

The outer walls of the two sides of the length direction of the air box 100 are respectively fixed with a baffle plate 110, and the upper surface of the baffle plate 110 is obliquely arranged downwards and is parallel to the upper surface of the air box 100. The striker plate 110 may be fixed to the bellows 100 by welding or bolting to prevent the fuel from falling off from both sides of the bellows 100.

A placing opening 130 is formed at the lower end of the upper surface of the wind box 100, the placing opening 130 is formed in the combustion area 170, a combustion plate 120 is arranged in the placing opening 130, and the upper surface of the combustion plate 120 is flush with the upper surface of the wind box 100.

The burner plate 120 may be integrally formed with the windbox 100 or removably attached thereto. In this embodiment, preferably, the combustion plate 120 is detachably connected to the windbox 100, that is, the combustion plate 120 is placed in the placement opening 130, so that the two ends of the combustion plate 120 are respectively and tightly abutted to the baffle plates 110 on the two sides of the windbox 100, and the friction force between the combustion plate 120 and the baffle plates 110 is large, so that the combustion plate 120 is not easy to fall off, and therefore, the cleaning of the interior of the cavity 140 by later-stage workers can be facilitated.

A cavity 140 is formed in the bellows 100, the placement port 130 communicates with the cavity 140, and an air inlet 141 for supplying air into the cavity 140 is formed at a higher end of the bellows 100. The surface of the combustion plate 120 is provided with a plurality of gas outlet holes 121. The external air enters the cavity 140 through the air inlet 141 and is discharged through the air outlet 121.

An air guide blower 150 is mounted on the air box 100 by bolts, and an outlet of the air guide blower 150 communicates with the air inlet 141. When air is supplied into the cavity 140, the air guide blower 150 is started, and the air guide blower 150 automatically pumps outside air into the cavity 140, so that primary air supply is performed on fuel combustion through the air outlet holes 121.

The boiler combustion air supply device further comprises an air supply pipe 200, the air supply pipe 200 comprises a horizontal pipe 210, and the horizontal pipe 210 is arranged at one end of the combustion plate 120 close to the higher end of the wind box 100 and is vertical to the fuel feeding direction. An air supply hole 211 is formed along the length direction of the horizontal pipe 210, and the air supply hole 211 is aligned with the area above the combustion plate 120.

The shape of the air supply hole 211 may be an elongated shape or a circular shape. In this embodiment, the air supply holes 211 are preferably circular and are opened along the length direction of the horizontal tube 210, so that the air entering the air supply pipe 200 can supply oxygen to the combustion area 170 more uniformly.

One end of the horizontal pipe 210 is communicated with a communicating pipe 220, and one end of the communicating pipe 220 far away from the horizontal pipe 210 is inserted into the cavity 140 of the bellows 100 and welded with the striker plate 110. Because communicating pipe 220 is arranged in cavity 140, consequently make the air in cavity 140 can partly discharge from venthole 121, carry out the air feed for fuel burning, another part gets into in communicating pipe 220, and then in reentrant tuber pipe 200, carry out the secondary air feed for fuel burning to improve the efficiency of secondary air feed on the one hand, on the other hand has practiced thrift the energy.

In order to further improve the effect of secondary air supply for fuel combustion, an elbow 221 is welded to one end of the communicating pipe 220 away from the horizontal pipe 210, and the elbow 221 faces the air inlet 141. The diameters of the elbow 221 and the end of the communicating pipe 220 which are arranged in the cavity 140 are larger than the diameter of the air supplement pipe 200 which is arranged outside.

The fuel in this application can be selected for fuels such as blue charcoal, coke or living beings, in addition because the volatile matter of blue charcoal is high, so when blue charcoal burning, the organic substance is heated and can be decomposed out the less steam state's of a part molecular weight combustible substance in it, and the air in the supply air pipe mixes with this part combustible substance in combustion area top, continues the burning under the effect of flame to the combustion effect of fuel has further been improved.

The implementation principle of the boiler combustion air supply device in the embodiment of the application is as follows: when the fuel is combusted, the air guide blower 150 is started, and the air guide blower 150 provides air into the cavity 140;

one part of air in the cavity 140 carries out primary air supply for fuel combustion through the air outlet holes 121, the other part of air enters the bent pipe 221 and then enters the air supply pipe 200, and secondary air supply is carried out for fuel combustion through the air supply holes 211, so that fuel combustion is more sufficient.

Example 2

Referring to fig. 2, the present embodiment is different from embodiment 1 in that one end of the communicating pipe 220, which is far away from the horizontal pipe 210, may be directly placed in the outside air, and when the outside wind is strong, may also enter the communicating pipe 220; in addition, another blower may be connected to an end of the connection pipe 220 away from the horizontal pipe 210, and the blower may be mounted on the sidewall of the bellows 100 by bolts.

The implementation principle of the boiler combustion air supply device in the embodiment of the application is as follows: when fuel is combusted, the air guide blower 150 is started, the air guide blower 150 provides air for the cavity 140, and the air in the cavity 140 carries out primary air supply on the fuel combustion through the air outlet holes 121;

then start the air-blower for the air-blower blows external air to communicating pipe 220 in, and then discharges from air supply hole 211, thereby carries out the secondary air feed to fuel burning, thereby makes fuel burning more abundant.

Example 3

Referring to fig. 3, a boiler including the combustion air supply apparatus of embodiment 1 includes a furnace body 160, the furnace body 160 is internally divided into a combustion chamber 161 and a water chamber 162, a wind box 100 is disposed in the combustion chamber 161, and the side wall of the higher end thereof is welded to the inner wall of the combustion chamber 161, and the air inlet 141 thereof is communicated with the outside. A flue 163 is fixed in the water cavity 162, and the flue 163 is distributed in a serpentine shape. One end of the flue 163 communicates with the combustion chamber 161, and the other end communicates with the outside. An exhaust fan 164 is installed at one end of the flue 163, which is located outside, through a bolt, and an inlet of the exhaust fan 164 is communicated with an outlet of the flue 163.

The implementation principle of a boiler of the embodiment of the application is as follows: when the fuel is combusted, suction fan 164 is activated, and suction fan 164 draws ambient air into cavity 140;

thereby make in the cavity 140 air partly through venthole 121 carry out the air feed once to fuel burning, in another part gets into return bend 221, then get into air supply pipe 200 in, carry out the secondary air feed through air supply hole 211 to fuel burning to make fuel burning more abundant.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a boiler burning air feed device which characterized in that: the air box comprises an air box (100) arranged in a boiler hearth, a cavity (140) is formed in the air box (100), a combustion area (170) is arranged on the upper surface of the air box (100), a plurality of air outlets (121) are formed in the upper surface of the air box (100), the air outlets (121) are all formed in the combustion area (170), and an air inlet (141) used for supplementing air into the cavity (140) is formed in the side wall of the air box (100); and the air supplementing pipe (200) is used for supplementing oxygen to the area above the combustion area (170).

2. A boiler combustion air supply unit according to claim 1, characterized in that: one end of the air supplementing pipe (200) is communicated with the atmosphere, the cavity (140) in the air box (100) or the blower.

3. A boiler combustion air supply unit according to claim 2, characterized in that: the air supply pipe (200) comprises a horizontal pipe (210), the horizontal pipe (210) is arranged above the air box (100), an air supply hole (211) is formed in the horizontal pipe (210), and the air supply hole (211) is aligned to an area above the combustion area (170).

4. A boiler combustion air supply unit according to claim 3, characterized in that: the air supplementing holes (211) are distributed along the length direction of the horizontal pipe (210).

5. A boiler combustion air supply device according to any one of claims 3-4, characterized in that: the air supplementing pipe (200) comprises a communicating pipe (220) communicated with the horizontal pipe (210), and one end, far away from the horizontal pipe (210), of the communicating pipe (220) is communicated with the cavity (140) in the air bellow (100).

6. The boiler combustion air supply device according to claim 5, wherein: one end, far away from horizontal pipe (210), of communicating pipe (220) is communicated with elbow pipe (221), and one end, far away from communicating pipe (220), of elbow pipe (221) faces towards the air inlet.

7. The boiler combustion air supply device according to claim 6, wherein: the diameters of the elbow (221) and the end of the communicating pipe (220) which are arranged in the cavity (140) are both larger than the diameter of the horizontal pipe (210).

8. A boiler combustion air supply unit according to claim 2, characterized in that: and the air box (100) is provided with an air guide blower (150) communicated with the air inlet.

9. A boiler combustion air supply unit according to claim 2, characterized in that: an exhaust fan (164) is arranged outside the air box (100), and the exhaust fan (164) is communicated with a smoke outlet of a boiler flue (163).

10. A boiler combustion air supply unit according to claim 3, characterized in that: the horizontal tube (210) is perpendicular to the fuel feed direction and is disposed on the side of the combustion zone (170) adjacent to the feed.