Feeding system of sludge incinerator

Abstract

The utility model provides a feeding system of a sludge incinerator, which comprises a sludge bin used for caching sludge to be incinerated; the conveying assembly is arranged at the bottom outlet end of the sludge bin, is connected with the sludge bin and the sludge incinerator and is used for conveying the sludge in the sludge bin into the sludge incinerator; the conveying assembly is a double-screw conveyor, the double-screw conveyor is of a double-screw double-roller type, the double-screw conveyor is further provided with a ventilation side, and the ventilation side is connected with the ventilation assembly. The sludge incinerator has the advantages that the ventilation assembly is combined, sludge can be evenly scattered in the hearth of the incinerator, so that the sludge is evenly combusted in the hearth, the problem that wet sludge and plate frame sludge are granulated and fed into the incinerator is solved, the cooling assembly prevents the oxidation problem possibly caused by the high-temperature environment of the hearth, and the combustion efficiency is improved. And the damage to equipment caused by oxidation is obviously reduced, and the overall service life of the in-furnace spiral is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sludge treatment technical field, concretely relates to a sludge incinerator feeding system. BACKGROUND

[0002] At present, the sludge is usually incinerated by the incinerator, but due to the high moisture content of the sludge, especially the plate frame sludge, the viscosity is large, and it is easy to gather, and its particle size is difficult to effectively control when entering the incinerator, and the large material is easy to accumulate after entering the incinerator, which affects the normal fluidization state of the incinerator, and it is difficult to realize uniform distribution and full combustion in the hearth, so that the heat distribution in the hearth is uneven, and the temperature in some areas is too high, while the combustion in other areas may be insufficient. Over time, the high temperature area of the incinerator is easy to form coking, not only reduces the incineration efficiency, but also may block the slag discharge pipe, affecting the normal operation of the boiler. Once the coking problem worsens, it will pose a serious threat to the safe operation of the boiler, and even may cause equipment failure or shutdown cleaning. In the continuous operation process of the sludge incinerator, the sludge combustion in the hearth will produce a very high temperature environment. Such high temperature conditions pose a serious challenge to each part of the incinerator, especially the feeding screw exposed to the flame or high temperature flue gas. High temperature can accelerate the oxidation or carbonization process of the material of the feeding screw, reduce the surface strength, gradually become fragile, and the mechanical properties decrease significantly. With the passage of time, continuous oxidation will cause the wear of the feeding screw to increase, and even may break or fall off, thereby greatly shortening its service life. This not only increases the maintenance cost of the equipment, but also may affect the continuity and stability of the sludge incineration process. CONTENT

[0003] In order to solve the problems of the prior art, in order to avoid the problems of material jamming and overheating during sludge transportation, the utility model provides a sludge incinerator feeding system.

[0004] The utility model discloses a sludge incinerator feeding system.

[0005] A sludge incinerator feeding system, comprising

[0006] The sludge bin is used for buffering the sludge to be incinerated.

[0007] The transmission assembly is arranged at the bottom outlet end of the sludge bin, is connected with the sludge bin and the sludge incinerator, and is used for transmitting the sludge in the sludge bin into the sludge incinerator.

[0008] The transmission assembly is a double screw machine, the double screw machine is a double screw roller type, and the double screw machine is further provided with a ventilation side connected with the ventilation assembly.

[0009] Preferably, the ventilation assembly comprises a fan arranged at one side of the double screw machine, the fan is connected with one end of the ventilation side of the double screw machine through a tuyere, and the other end of the ventilation side is arranged at the discharge end of the double screw machine and communicated with the incinerator.

[0010] Preferably, the ventilation side is arranged at the discharge end of the double screw machine.

[0011] Preferably, the shaft of the double screw machine is communicated with the hollow of the spiral blade, and the double screw machine is further connected with a cooling assembly connected with the shaft and the spiral blade of the double screw machine.

[0012] Preferably, a through hole for pressure relief is arranged on the spiral blade of the double screw machine.

[0013] Preferably, the pitch of the spiral blade of the double screw machine is arranged in a variable pitch mode.

[0014] Preferably, the pitch of the spiral blade of the double screw machine at the inlet end is greater than that at the discharge end.

[0015] The beneficial effects of the utility model lie in: the utility model combines the ventilation assembly, can uniformly spread the sludge in the hearth of the incinerator, makes it uniformly burn in the hearth, solves the problem of wet sludge, plate frame sludge granulation into the furnace, the cooling assembly prevents the oxidation problem caused by the high temperature environment of the hearth, significantly reduces the damage of equipment caused by oxidation, prolongs the overall service life of the furnace screw. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0017] Fig. 1 The utility model discloses a structure schematic diagram.

[0018] Fig. 2 The utility model discloses a side surface structure schematic diagram. CONCRETE EMBODIMENT

[0019] The utility model discloses a kind of sludge incinerator feeding system, combined with Figs. 1-2 As shown in the figure, including the sludge bin 1 for buffering sludge to be incinerated, the transmission assembly is arranged at the bottom outlet end of the sludge bin 1.The transmission assembly connects sludge bin 1 with sludge incinerator 4, for transmitting the sludge in sludge bin 1 into sludge incinerator 4.

[0020] The conveying assembly is a double screw machine 2, the double screw machine 2 is a double screw pair roller type, and the pitch of the screw blade is arranged in a variable pitch mode, further, the pitch of the screw blade is gradually reduced from one end to the other end, in the embodiment, the pitch of the screw blade of the double screw machine 2 at the feeding end is greater than that at the discharging end, that is, the pitch becomes smaller and smaller towards the incinerator end, so that the particle size of the discharged material can be ensured to be smaller, and generally, the particle size of the discharged material is below 10 mm. In order to prevent the screw machine from being locked due to the extrusion of sludge, greatly improve the stability and reliability of the feeding system, the screw blade 21 of the double screw machine 2 is provided with a relief through hole 22, and the through hole 22 is also beneficial to auxiliary control of the particle size of the sludge entering the furnace.

[0021] The double screw machine 2 is also provided with a ventilation side 3 connected with a ventilation assembly. Specifically, the ventilation assembly comprises a fan arranged on one side of the double screw machine, and the fan is connected with one end of the ventilation side 5 of the double screw machine through a tuyere. The other end of the ventilation side 5 is arranged at the discharging end of the double screw machine 2 and communicated with the incinerator, which is used for blowing the sludge entering the incinerator to play a role of spreading material, so as to prevent the sludge entering the furnace from affecting the fluidization of the bed material.

[0022] In the double screw machine, the shaft and the hollow screw blade are communicated, in order to prevent the oxidation of the conveying assembly caused by the high-temperature flue gas in the furnace, better protect the equipment and prolong the service life of the equipment, the double screw machine is also connected with a cooling assembly, the cooling assembly is connected with the shaft and the screw blade of the double screw machine, and the cooling assembly is a fan, which cools the shaft and the screw blade of the double screw machine through cooling air.

[0023] In the double screw machine, the ventilation assembly is combined, the sludge can be uniformly distributed in the furnace of the incinerator, so that the sludge can be uniformly burned in the furnace, the problems of wet sludge and plate frame sludge granulation entering the furnace are solved, the oxidation problem caused by the high-temperature environment in the furnace is prevented by the cooling assembly, the damage of the equipment caused by oxidation is significantly reduced, and the overall service life of the furnace screw is prolonged.

[0024] Finally, it should be pointed out that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sludge incinerator feeding system, characterized by: The application relates to a sludge conveying device for a sludge incinerator. The sludge conveying device comprises a sludge bin for buffering sludge to be incinerated; a conveying assembly arranged at the bottom outlet end of the sludge bin and connected with the sludge bin and the sludge incinerator, and used for conveying the sludge in the sludge bin into the sludge incinerator. The conveying assembly is a double-screw machine, the double-screw machine is a double-screw roller type, and the double-screw machine is further provided with a ventilation side connected with a ventilation assembly. The ventilation assembly comprises a fan arranged at one side of the double-screw machine, the fan is connected with one end of the ventilation side of the double-screw machine through a tuyere, and the other end of the ventilation side is arranged at the discharge end of the double-screw machine and communicated with the sludge incinerator.

2. A sludge incinerator feeding system as claimed in claim 1, characterized in that: The ventilation side is arranged at the discharge end of the double-screw machine.

3. A sludge incinerator feeding system as claimed in claim 2, characterized in that: The shaft of the double-screw machine is communicated with the hollow spiral blade, the double-screw machine is further connected with a cooling assembly, and the cooling assembly is connected with the shaft and the spiral blade of the double-screw machine.

4. A sludge incinerator feeding system as claimed in claim 1, characterized in that: The spiral blade of the double-screw machine is provided with a through hole for pressure relief.

5. A sludge incinerator feeding system as claimed in claim 1, characterized in that: The pitch of the spiral blade of the double-screw machine is arranged in a variable pitch mode.

6. A sludge incinerator feeding system as claimed in claim 1, characterized in that: The pitch of the inlet end of the spiral blade of the double-screw machine is greater than the pitch of the discharge end.

7. A sludge incinerator feeding system as claimed in claim 6, characterised in that: ​

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