CN219955310U - Rotary boiler - Google Patents

Abstract

The utility model discloses a rotary boiler, which comprises a shell, a rotary cone and an air pipe assembly, wherein the rotary cone is rotatably arranged in the shell and is used for limiting a combustion chamber, the central axis of the rotary cone is inclined upwards along the direction far away from a horizontal plane, the air pipe assembly comprises a straight pipe section and a plurality of inclined pipe sections, one end of the straight pipe section is positioned outside the shell, the other end of the straight pipe section stretches into the combustion chamber, the inclined pipe sections are connected to one end of the straight pipe section positioned in the combustion chamber, the inclined pipe sections are inclined downwards along the direction far away from the central axis, the inclined pipe sections are provided with a plurality of air outlet holes which are arranged at intervals along the circumference of the inclined pipe sections, and the air pipe assembly can supply air to the combustion chamber through the air outlet holes. According to the rotary boiler, the air pipe assembly is additionally arranged in the rotary cone to introduce primary air into the combustion chamber, so that the installation mode is simple, the cost is low, and a large number of sealing elements are not required to be consumed.

Description

Rotary boiler

Technical Field

The utility model relates to the technical field of burners, in particular to a rotary boiler.

Background

In a rotary boiler, primary air is usually introduced to supply combustion air to the boiler, so that the fuel in the rotary cone can be normally combusted.

In the related art, the primary air inlet pipe and the conical wall of the rotary cone form a composite connection structure and rotate together with the rotary cone, so that the primary air inlet pipe is complex and tedious in installation mode, a large amount of dynamic and static sealing is needed, and the cost is high.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art, and provides the rotary boiler, which is simple in installation mode, low in cost and free from consuming a large number of sealing elements by additionally arranging the air pipe assembly in the rotary cone to introduce primary air into the combustion chamber.

The rotary boiler of the embodiment of the utility model comprises: the rotary cone is rotatably arranged in the shell and defines a combustion chamber, and the central axis of the rotary cone is inclined upwards in a direction away from the horizontal plane; the air pipe assembly comprises a straight pipe section and a plurality of inclined pipe sections, one end of the straight pipe section is located outside the shell, the other end of the straight pipe section stretches into the combustion chamber, the inclined pipe sections are connected with one end of the straight pipe section located in the combustion chamber, the inclined pipe sections incline downwards along the direction away from the central axis, the inclined pipe sections are provided with a plurality of air outlet holes which are arranged at intervals along the circumference of the inclined pipe sections, and the air pipe assembly can pass through the air outlet holes to supply air to the combustion chamber.

According to the rotary boiler provided by the embodiment of the utility model, the rotary cone is rotatably arranged in the shell and defines the combustion chamber, the central axis of the rotary cone is inclined upwards along the direction far away from the horizontal plane, the air pipe assembly comprises the straight pipe section and a plurality of inclined pipe sections, one end of the straight pipe section is positioned outside the shell, the other end of the straight pipe section stretches into the combustion chamber, the inclined pipe sections are connected to one end of the straight pipe section positioned in the combustion chamber, the inclined pipe sections are inclined downwards along the direction far away from the central axis, the inclined pipe sections are provided with a plurality of air outlet holes which are arranged at intervals along the circumferential direction, the air pipe assembly can supply air to the combustion chamber through the air outlet holes, namely, in the air pipe assembly, primary air is firstly introduced into the inclined pipe sections from the straight pipe section and then discharged into the combustion chamber through the air outlet holes so as to improve the combustion efficiency of fuel in the rotary cone.

In addition, in the rotary boiler, the inclined pipe section is obliquely arranged at the lower part close to the rotary cone, and the fuel in the rotary cone can be completely covered on the inclined pipe section due to the oblique arrangement of the rotary cone, so that primary air discharged by the inclined pipe section can be fully contacted with the fuel, and the utilization rate of the primary air is improved.

In some embodiments, the chute section has a stiffener.

In some embodiments, the rotating cone includes a plurality of support arms and a rotating shaft rotatably connected to the housing through bearings, the plurality of support arms being connected to a side of the rotating shaft toward the housing in a circumferential direction of the rotating shaft, the rotating cone further including a plurality of hoop plates arranged at intervals in an extending direction of a central axis thereof, the hoop plates surrounding an outer circumference of the plurality of support arms.

In some embodiments, the straight tube segment extends into the combustion chamber through the rotational axis, and a portion of the straight tube segment located in the combustion chamber has a baffle rotatably coupled to the rotational axis.

In some embodiments, the baffle is an annular plate, an inner periphery of which is connected to an outer wall of the straight tube segment.

In some embodiments, the straight tube segment has a load bearing tube that is sleeved on a portion of the straight tube segment that is located within the rotational axis.

In some embodiments, the rotary boiler further comprises a secondary combustion cone, the secondary combustion cone is arranged on the shell in a penetrating mode, the secondary combustion cone is provided with an exhaust channel communicated with the combustion cavity, and a part, located outside the shell, of the secondary combustion cone is provided with a feed inlet communicated with the exhaust channel.

In some embodiments, an air inlet is provided at an end of the secondary combustion cone remote from the housing.

In some embodiments, the cross-sectional area of the exhaust passage gradually decreases in a direction away from the housing.

In some embodiments, the rotary boiler further comprises a slag tapping assembly comprising a screw conveyor shaft and a driving member, the housing has a slag tapping cavity for mounting the screw conveyor shaft, the slag tapping cavity is in communication with the combustion chamber, and the slag tapping cavity has a slag tap, the driving member is capable of driving the screw conveyor shaft to rotate, and the screw conveyor shaft is capable of conveying slag discharged from the combustion chamber to the slag tap to discharge.

Drawings

Fig. 1 is a schematic structural view of a rotary boiler according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of an air duct assembly of a rotary boiler according to an embodiment of the present utility model.

Reference numerals:

the device comprises a shell 1, a rotating cone 2, a supporting arm 21, a rotating shaft 22, a bearing 23, an air pipe assembly 3, a straight pipe section 31, an inclined pipe section 32, an air outlet 33, a baffle 34, a secondary combustion cone 4, a feed inlet 41, an air inlet 42, a slag discharging assembly 5, a spiral conveying shaft 51 and a slag discharging opening 52.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 and 2, the rotary boiler of the embodiment of the present utility model includes a housing 1, a rotary cone 2, and an air duct assembly 3.

Specifically, the rotary cone 2 is rotatably disposed in the housing 1 and defines a combustion chamber, and the central axis of the rotary cone 2 is inclined upwards in a direction away from the horizontal plane, the air duct assembly 3 includes a straight duct section 31 and a plurality of inclined duct sections 32, one end of the straight duct section 31 is located outside the housing 1, the other end extends into the combustion chamber, the inclined duct sections 32 are all connected to one end of the straight duct section 31 located in the combustion chamber, the inclined duct section 32 is inclined downwards in a direction away from the central axis, the inclined duct section 32 has a plurality of air outlet holes 33 arranged at intervals along the circumferential direction thereof, and the air duct assembly 3 can supply air to the combustion chamber through the air outlet holes 33.

It will be appreciated that primary air may be introduced from the straight pipe section 31 into the inclined pipe section 32, where the primary air is discharged from the outlet holes 33 into the combustion chamber to enhance the combustion efficiency of the fuel in the rotating cone 2.

It should be noted that, since the rotating cone 2 is disposed obliquely, the fuel in the rotating cone 2 always covers the lower part of the rotating cone 2 (in the up-down direction as shown in fig. 1), whereas in the rotary boiler of the present utility model, the inclined tube section 32 is also disposed obliquely near the lower part of the rotating cone 2, so that the fuel covers the inclined tube section 32 entirely, and the primary air discharged from the inclined tube section 32 can be fully contacted with the fuel, thereby improving the utilization rate of the primary air.

According to the rotary boiler provided by the embodiment of the utility model, the rotary cone is rotatably arranged in the shell and defines the combustion chamber, the central axis of the rotary cone is inclined upwards along the direction far away from the horizontal plane, the air pipe assembly comprises the straight pipe section and a plurality of inclined pipe sections, one end of the straight pipe section is positioned outside the shell, the other end of the straight pipe section stretches into the combustion chamber, the inclined pipe sections are connected to one end of the straight pipe section positioned in the combustion chamber, the inclined pipe sections are inclined downwards along the direction far away from the central axis, the inclined pipe sections are provided with a plurality of air outlet holes 33 which are arranged at intervals along the circumferential direction, the air pipe assembly can supply air to the combustion chamber through the air outlet holes, namely, in the air pipe assembly, primary air is firstly introduced into the inclined pipe sections from the straight pipe section and then discharged into the combustion chamber through the air outlet holes 33 so as to improve the combustion efficiency of fuel in the rotary cone.

In addition, in the rotary boiler, the inclined pipe section is obliquely arranged at the lower part close to the rotary cone, and the fuel in the rotary cone can be completely covered on the inclined pipe section due to the oblique arrangement of the rotary cone, so that primary air discharged by the inclined pipe section can be fully contacted with the fuel, and the utilization rate of the primary air is improved.

Further, as shown in fig. 1 and 2, the chute section 32 has reinforcing ribs (not shown).

It should be noted that, when the fuel enters the rotating cone 2 or the fuel rotates in the rotating cone 2, the fuel may impact the inclined tube section 32, so that a reinforcing rib may be added to the inclined tube section 32 to improve the structural strength of the inclined tube section 32 and the durability of the air tube assembly.

Further, as shown in fig. 1, the rotary cone 2 includes a plurality of support arms 21 and a rotation shaft 22, the rotation shaft 22 is rotatably connected to the housing 1 through a bearing 23, the plurality of support arms 21 are connected to a side of the rotation shaft 22 toward the housing 1 in a circumferential direction of the rotation shaft 22, and the rotary cone 2 further includes a plurality of hoop plates (not shown) arranged at intervals in an extending direction of a central axis thereof, the hoop plates surrounding an outer circumference of the plurality of support arms 21.

In other words, the support arm 21 cooperates with the hoop plate to form the conical wall of the rotary cone 2 in a net frame shape, thereby improving the structural strength of the rotary cone 2 and ensuring the durability of the rotary cone 2.

Further, as shown in fig. 1, the straight tube segment 31 extends into the combustion chamber through the rotation shaft 22, and a portion of the straight tube segment 31 located in the combustion chamber has a baffle 34, and the baffle 34 is rotatably connected to the rotation shaft 22.

It can be understood that the baffle 34 added to the straight pipe section 31 can prevent the air pipe assembly 3 from falling out of the combustion chamber, or prevent the residue of combustion from falling into the fit gap between the straight pipe section 31 and the baffle 34, so as to ensure the normal rotation of the rotary cone 2.

Further, as shown in fig. 1 and 2, the baffle 34 is an annular plate, the inner periphery of which is connected to the outer wall of the straight pipe section 31.

It will be appreciated that the annular plate may promote uniformity of the force applied to the straight tube segment 31, thereby avoiding wear or sagging of the straight tube segment 31.

Further, as shown in fig. 1, the straight tube segment 31 has a load-bearing tube (not shown) that is sleeved on a portion of the straight tube segment 31 that is located within the rotational shaft 22.

It can be understood that when the rotation shaft 22 rotates, the rotation shaft 22 can generate friction on the straight pipe section 31, and the gravity of the rotation cone 2 also acts on the straight pipe section 31 through the rotation shaft 22, and the added bearing pipe can effectively enhance the structural strength of the straight pipe section 31 and improve the durability of the straight pipe section 31.

Further, as shown in fig. 1, the rotary boiler further comprises a secondary combustion cone 4, the secondary combustion cone 4 is arranged on the shell 1 in a penetrating way, the secondary combustion cone 4 is provided with an exhaust channel communicated with the combustion cavity, and a part of the secondary combustion cone 4 outside the shell 1 is provided with a feed inlet 41 communicated with the exhaust channel.

In other words, the fuel can drop into the rotary cone 2 from the feed inlet 41 through the exhaust passage, while the flue gas generated by the combustion of the fuel can be discharged from the exhaust passage, and in the exhaust passage, the mixed soot in the flue gas can be decomposed by secondary combustion under the high temperature condition, so as to purify the discharged flue gas and improve the environmental protection of the rotary boiler.

Further, as shown in fig. 1, the end of the secondary combustion cone 4 remote from the housing 1 is provided with an air inlet 42.

It can be understood that the secondary air can be input into the exhaust channel through the air inlet, and under the action of the secondary air, the smoke generated by the fuel combustion forms vortex gas, so that the residence time of the smoke in the secondary combustion cone 4 is increased, and the ash in the smoke can be fully decomposed at high temperature.

Further, as shown in fig. 1, the cross-sectional area of the exhaust passage gradually decreases in a direction away from the housing 1.

It can be understood that the conical exhaust channel can form throttling and speed increasing effects on combustion flue gas, and the mixing effect of secondary air and flue gas is improved.

Further, as shown in fig. 1, the rotary boiler further comprises a slag discharging assembly 5, the slag discharging assembly 5 comprises a screw conveying shaft 51 and a driving member (not shown), the shell 1 is provided with a slag discharging cavity for installing the screw conveying shaft 51, the slag discharging cavity is communicated with the combustion cavity, the slag discharging cavity is provided with a slag outlet 52, the driving member can drive the screw conveying shaft 51 to rotate, and the slag discharged by the combustion cavity can be conveyed to the slag outlet 52 to be discharged by rotating the screw conveying shaft 51.

It can be understood that the sediment chamber can be located the below of rotatory awl 2, and the in-process of burning rubbish from this, the lime-ash that combustion chamber in rubbish burning produced can drop to sediment chamber in the sediment chamber and discharge from rotatory awl 2, avoids too much lime-ash to pile up in casing 1, promotes rotary boiler's combustion efficiency.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore 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 at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A rotary boiler, comprising:

the rotary cone is rotatably arranged in the shell and defines a combustion chamber, and the central axis of the rotary cone is inclined upwards in a direction away from the horizontal plane;

the air pipe assembly comprises a straight pipe section and a plurality of inclined pipe sections, one end of the straight pipe section is located outside the shell, the other end of the straight pipe section stretches into the combustion chamber, the inclined pipe sections are connected with one end of the straight pipe section located in the combustion chamber, the inclined pipe sections incline downwards along the direction away from the central axis, the inclined pipe sections are provided with a plurality of air outlet holes which are arranged at intervals along the circumference of the inclined pipe sections, and the air pipe assembly can pass through the air outlet holes to supply air to the combustion chamber.

2. The rotary boiler of claim 1, wherein the inclined tube section has reinforcing ribs.

3. The rotary boiler according to claim 1, wherein the rotary cone includes a plurality of support arms and a rotation shaft rotatably connected to the housing by bearings, the plurality of support arms being connected to a side of the rotation shaft facing the housing in a circumferential direction of the rotation shaft, the rotary cone further including a plurality of hoop plates arranged at intervals in an extending direction of a central axis thereof, the hoop plates surrounding an outer circumference of the plurality of support arms.

4. A rotary boiler according to claim 3, wherein the straight tube section extends into the combustion chamber through the rotation axis, and the portion of the straight tube section located in the combustion chamber has a baffle plate rotatably connected to the rotation axis.

5. The rotary boiler according to claim 4, wherein the baffle is an annular plate, and an inner periphery of the annular plate is connected to an outer wall of the straight pipe section.

6. The rotary boiler of claim 4, wherein the straight tube section has a load bearing tube sleeved on a portion of the straight tube section within the rotational axis.

7. The rotary boiler of claim 1, further comprising a secondary combustion cone, wherein the secondary combustion cone is arranged on the shell in a penetrating manner, and is provided with an exhaust passage communicated with the combustion chamber, and a part of the secondary combustion cone, which is positioned outside the shell, is provided with a feed inlet communicated with the exhaust passage.

8. The rotary boiler of claim 7, wherein an air inlet is provided at an end of the secondary combustion cone remote from the housing.

9. The rotary boiler according to claim 8, wherein a sectional area of the exhaust passage gradually decreases in a direction away from the housing.

10. The rotary boiler of claim 1, further comprising a slag tapping assembly, the slag tapping assembly comprising a screw conveyor shaft and a driving member, the housing having a slag tapping cavity for mounting the screw conveyor shaft, the slag tapping cavity in communication with the combustion chamber, and the slag tapping cavity having a slag tap, the driving member being operable to drive the screw conveyor shaft to rotate, the screw conveyor shaft being operable to convey slag discharged from the combustion chamber to the slag tap for discharge.