CN-121993796-A - Sludge mixing, feeding and processing system

CN121993796ACN 121993796 ACN121993796 ACN 121993796ACN-121993796-A

Abstract

The application discloses a sludge mixing, feeding and processing system, which can realize the adjustment of the feed water content of a sludge incinerator by adjusting the proportion of added raw materials, has the crushing and stirring functions, can fully ensure the feed uniformity of the sludge incinerator, can greatly reduce or even avoid the problems of large temperature fluctuation, coking in the incinerator and the like, and can ensure the incineration efficiency and the incineration effect. The main structure of the application comprises a dry sludge storage tank, a wet sludge storage tank, a sludge premixing and conveying device, a homogenizing and mixing device and a sludge incinerator, wherein dry sludge stirring paddles are arranged in the dry sludge storage tank, wet sludge stirring paddles are arranged in the wet sludge storage tank, the sludge premixing and conveying device comprises a sludge conveying belt, a distributing pipe and a ditching plow, a plurality of material injecting nozzles are arranged on the distributing pipe, the homogenizing and mixing device comprises a mixing outer cylinder and a mixing and stirring shaft, and a mixing and conveying spiral auger blade, a primary crushing fork, a secondary crushing fork and a tertiary crushing fork are arranged on the mixing and stirring shaft.

Inventors

RAO BINQI
ZHANG HAOKE
ZHOU FANG
Gong fudong
GU WENHU
JIANG JIA

Assignees

中国计量大学
安吉钱水环境科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (10)

1. A sludge mixing, feeding and processing system, comprising: the dry sludge storage tank is internally provided with a plurality of dry sludge stirring paddles driven by a dry sludge stirring motor, the bottom of the dry sludge storage tank is provided with a dry sludge discharge port, and the dry sludge discharge port is provided with a dry sludge discharge valve; The wet sludge storage tank is internally provided with a plurality of wet sludge stirring paddles driven by a wet sludge stirring motor, the bottom of the wet sludge storage tank is provided with a wet sludge discharge port, and the wet sludge discharge port is provided with a wet sludge discharge valve; The sludge premixing and conveying device comprises a sludge conveying belt, a wet sludge conveying structure and a front side screw feeder, wherein the sludge conveying belt is arranged below a dry sludge discharge hole, the wet sludge conveying structure is used for conveying wet sludge fed from the wet sludge discharge hole to the sludge conveying belt, and a front side hopper is arranged at the feeding end of the front side screw feeder and is used for receiving sludge on the sludge conveying belt; the homogenizing mixing device comprises a transversely arranged mixing outer barrel and a mixing stirring shaft which is arranged in the mixing outer barrel and is driven by a mixing stirring motor, wherein an outer barrel feeding port which is in butt joint with the discharging end of the front side screw feeder is arranged at the upper part of one end of the mixing outer barrel, an outer barrel discharging port is arranged at the lower part of the other end of the mixing outer barrel, a mixing conveying screw auger blade, at least one primary crushing fork, at least one secondary crushing fork and at least one tertiary crushing fork are arranged on the mixing stirring shaft, and the outer barrel feeding port, any primary crushing fork, any secondary crushing fork and any tertiary crushing fork are sequentially arranged along the axial direction of the mixing stirring shaft; the outer cylinder discharge port is in butt joint with the feed inlet of the sludge incinerator through a conveying pipeline.
2. The sludge mixing, feeding and processing system according to claim 1, wherein the sludge premixing conveying device further comprises a roller frame, an embedded distribution frame and a lifter for driving the embedded distribution frame to lift, the roller frame is provided with an automatic pressing roller which is rotationally connected with the roller frame and is positioned above the sludge conveying belt, the embedded distribution frame is provided with a distribution pipe fed by a wet sludge conveying structure and a plurality of ditching plows for ditching a dry sludge layer on the sludge conveying belt, the distribution pipe is provided with a plurality of material injection nozzles which are in one-to-one correspondence with the ditching plows and are used for injecting wet sludge into the ditches where the corresponding ditching plows are plowed, the material injection ends of the material injection nozzles are communicated with the distribution pipe, and the material injection nozzles are provided with material injection and discharge valves, and the dry sludge discharge port, any ditching plows, any material injection nozzles and the automatic pressing roller are sequentially arranged along the conveying direction of the sludge conveying belt.
3. The sludge mixing, feeding and processing system according to claim 2, wherein the wet sludge conveying structure comprises a wet sludge screw feeder, wherein a discharge end of the wet sludge screw feeder is a discharge end of the wet sludge conveying structure, and the discharge end of the wet sludge screw feeder is abutted to the distributing pipe through a wet sludge conveying hose.
4. The sludge mixing, feeding and processing system according to claim 1,2 or 3, wherein the primary crushing fork comprises a primary inner fork frame arranged on the mixing shaft, a primary outer fork frame arranged on the primary inner fork frame, a plurality of primary inner fork rods arranged on the primary inner fork frame and a plurality of primary outer fork rods arranged on the primary outer fork frame, and in one primary crushing fork, the distance between any two adjacent primary inner fork rods is L, and the distance between any two adjacent primary outer fork rods is L; The secondary crushing fork comprises a secondary inner fork frame arranged on the mixing stirring shaft, a secondary outer fork frame arranged on the secondary inner fork frame, a plurality of secondary inner fork rods arranged on the secondary inner fork frame and a plurality of secondary outer fork rods arranged on the secondary outer fork frame, wherein in one secondary crushing fork, the distance between any two adjacent secondary inner fork rods is M, and the distance between any two adjacent secondary outer fork rods is M; The three-stage crushing fork comprises a three-stage inner fork frame arranged on the mixing stirring shaft, a three-stage outer fork frame arranged on the three-stage inner fork frame, a plurality of three-stage inner fork rods arranged on the three-stage inner fork frame and a plurality of three-stage outer fork rods arranged on the three-stage outer fork frame, wherein in one three-stage crushing fork, the interval between any two adjacent three-stage inner fork rods is N, and the interval between any two adjacent three-stage outer fork rods is N; L>M>N。
5. The sludge mixing, feeding and processing system according to claim 1, wherein an inflatable air bag layer structure covering the circumferential inner side wall of the mixing outer barrel is arranged in the mixing outer barrel, the inflatable air bag layer structure comprises at least one air bag body, a deflation pipe and an inflation pipe are arranged on the air bag body, an deflation electromagnetic valve is arranged on the deflation pipe, the inflation pipe is connected with a high-pressure air source in a butt joint mode, and the inflation electromagnetic valve is arranged on the inflation pipe.
6. The sludge mixing, feeding and processing system according to claim 5, wherein the inflatable air bag layer structure comprises two air bag bodies, one air bag body is located above the other air bag body, the air bag body located above is defined as an upper semicircular air bag, the other air bag body is defined as a lower semicircular air bag, the sludge mixing, feeding and processing system further comprises a plurality of active bottoming structures, the primary crushing fork, the secondary crushing fork and the tertiary crushing fork are defined as crushing structures, the crushing structures are in one-to-one correspondence with the active bottoming structures, and in the corresponding crushing structures and the active bottoming structures: the active bottom-changing structure comprises a U-shaped stainless steel elastic sheet for flicking the breaking structure and two extrusion air bags for extruding outer side surfaces at two ends of the U-shaped stainless steel elastic sheet, wherein an opening of the U-shaped stainless steel elastic sheet faces upwards, the outer side surfaces of the U-shaped stainless steel elastic sheet are composed of two top end outer side surfaces which are symmetrically arranged and one U-shaped outer side surface, one top end outer side surface, the U-shaped outer side surface and the other top end outer side surface are sequentially and continuously arranged, the extrusion air bags are arranged on the lower semicircular air bags, one top end outer side surface is fixedly attached to one extrusion air bag, the other top end outer side surface is fixedly attached to the other extrusion air bag, the U-shaped outer side surface is fixedly attached to the lower semicircular air bags, an exhaust pipe and an air inlet pipe are arranged on the extrusion air bags, the air inlet pipe is in butt joint with a high-pressure air source, and an air inlet electromagnetic valve is arranged on the air inlet pipe.
7. The sludge mixing, feeding and processing system according to claim 1,2 or 3, wherein the conveying pipeline comprises a discharge transverse pipe, a discharge vertical pipe with a closed lower end, a plunger pump and a pressurizing conveying pipe which are horizontally arranged, the upper ends of the outer cylinder discharge port, the discharge transverse pipe and the discharge vertical pipe are sequentially communicated, a working containing cavity of the plunger pump is communicated with the discharge vertical pipe, one end of the pressurizing conveying pipe is communicated with the discharge vertical pipe, the other end of the pressurizing conveying pipe is communicated with the sludge incinerator through an incinerator feeding pipe, and the working containing cavity of the plunger pump, the discharge vertical pipe and the pressurizing conveying pipe are sequentially arranged along the length direction of the pressurizing conveying pipe.
8. The sludge mixing, feeding and processing system according to claim 7, wherein a crushing filter plate is arranged in the pressurizing and conveying pipe, a plurality of crushing filter holes are formed in the crushing filter plate, the conveying pipeline further comprises a first high-pressure air pipe supplied by a high-pressure air source and a second high-pressure air pipe supplied by the high-pressure air source, the first high-pressure air pipe is communicated with the pressurizing and conveying pipe through a front side branch pipe, the first high-pressure air pipe is communicated with the pressurizing and conveying pipe through a rear side branch pipe, a first electromagnetic valve is arranged on the first high-pressure air pipe, an outer cylinder feed back opening above an outer cylinder discharge opening is formed in the mixing outer cylinder, the pressurizing and conveying pipe is communicated to the outer cylinder feed back opening through a feed back pipe, a communicating position of the discharge standpipe, the front side branch pipe and the pressurizing and conveying pipe is sequentially arranged along the length direction of the pressurizing and conveying pipe, a communicating position of the feed back standpipe, a communicating position of the front side branch pipe and the pressurizing and the conveying pipe is positioned below the communicating position of the feed back pipe and the pressurizing and the conveying pipe, a second high-pressure air pipe is sequentially communicated with the second high-pressure air pipe, and a second high-pressure air pipe is sequentially communicated with the feed inlet pipe, and the second high-pressure air pipe is sequentially arranged along the length direction of the pressurizing and the pressurizing pipe.
9. The sludge mixing, feeding and processing system according to claim 1, 2 or 3, further comprising a control host, wherein a dry sludge moisture content detector electrically connected with the control host is arranged at a dry sludge discharge port, a wet sludge moisture content detector electrically connected with the control host is arranged at a wet sludge discharge port, an outer cylinder discharged sludge moisture content detector electrically connected with the control host is arranged at an outer cylinder discharge port, the sludge incinerator comprises an incinerator DCS, the incinerator DCS comprises an in-furnace temperature detector, and the in-furnace temperature detector is electrically connected with the control host.
10. The sludge mixing, feeding and processing system according to claim 9, wherein the incinerator DCS comprises an in-furnace pressure detector electrically connected to the control host, and the dry sludge discharge valve and the wet sludge discharge valve are electrically controlled regulating valves, and the dry sludge discharge valve, the wet sludge discharge valve and the front screw feeder are electrically connected to the control host.

Description

Sludge mixing, feeding and processing system Technical Field The invention belongs to the technical field of sludge treatment, and particularly relates to a sludge mixing, feeding and treating system. Background Sludge contains a large amount of organic matters, pathogens, heavy metals and the like, and if the sludge is improperly treated (such as simple landfill), serious secondary pollution (soil and groundwater pollution) can be caused. Incineration is one of the most thorough and rapid ways to treat sludge at present, and by incineration, sludge reduction, stabilization and innocuity can be realized, and energy recovery is possible. Sludge incinerators themselves belong to the prior art, which are common devices for incinerating sludge, which are required for the moisture content of the feed (sludge entering the sludge incinerator), in other words, the wet sludge blending ratio is limited, for example, the sludge with a moisture content of 60% -80% and the blending ratio should generally be less than 5%. Once the blending ratio deviates from the normal range, the problems of low burning efficiency, poor burning effect and the like are easily caused. In addition, there is a demand for uniformity of the feed to the sludge incinerator, and if the uniformity of the feed is poor (there are cases where the segregation and delamination are remarkable, the solid agglomeration is large, etc.), problems such as large temperature fluctuation in the furnace and coking in the furnace are likely to occur. Therefore, the method for reasonably improving the uniformity of the feed of the sludge incinerator and reasonably controlling the water content of the feed of the sludge incinerator is a key for guaranteeing high efficiency and good effect of sludge incineration. The dry sludge and the wet sludge are mixed together, and the water content of the final feed can be regulated theoretically by regulating the proportion of the dry sludge and the wet sludge, but how to uniformly mix the dry sludge and the wet sludge with different properties as quickly and effectively as possible, so that the feeding of the final sludge incinerator is prevented from caking, the temperature fluctuation in the incinerator is prevented from being large, the coking in the incinerator is prevented, and the stable incineration process is ensured. Disclosure of Invention The invention provides a sludge mixing, feeding and processing system, which divides raw materials into dry sludge and wet sludge, can realize the adjustment of the feed water content of a sludge incinerator by adjusting the proportion of the added raw materials, has strong adaptability, has a multi-stage premixing function, can fully premix the dry sludge and the wet sludge, and also has a crushing and stirring function, can fully ensure the feed uniformity of the sludge incinerator, can greatly reduce or even avoid the problems of large temperature fluctuation in the incinerator, coking in the incinerator and the like, and can ensure the incineration efficiency and the incineration effect. In order to achieve the above purpose, the present invention adopts the following technical scheme: a sludge mixing, feeding and processing system comprising: the dry sludge storage tank is internally provided with a plurality of dry sludge stirring paddles driven by a dry sludge stirring motor, the bottom of the dry sludge storage tank is provided with a dry sludge discharge port, and the dry sludge discharge port is provided with a dry sludge discharge valve; The wet sludge storage tank is internally provided with a plurality of wet sludge stirring paddles driven by a wet sludge stirring motor, the bottom of the wet sludge storage tank is provided with a wet sludge discharge port, and the wet sludge discharge port is provided with a wet sludge discharge valve; The sludge premixing and conveying device comprises a sludge conveying belt, a wet sludge conveying structure and a front side screw feeder, wherein the sludge conveying belt is arranged below a dry sludge discharge hole, the wet sludge conveying structure is used for conveying wet sludge fed from the wet sludge discharge hole to the sludge conveying belt, and a front side hopper is arranged at the feeding end of the front side screw feeder and is used for receiving sludge on the sludge conveying belt; the homogenizing mixing device comprises a transversely arranged mixing outer barrel and a mixing stirring shaft which is arranged in the mixing outer barrel and is driven by a mixing stirring motor, wherein an outer barrel feeding port which is in butt joint with the discharging end of the front side screw feeder is arranged at the upper part of one end of the mixing outer barrel, an outer barrel discharging port is arranged at the lower part of the other end of the mixing outer barrel, a mixing conveying screw auger blade, at least one primary crushing fork, at least one secondary crushing fork and at least one tertiary crushing fork