CN210855774U

CN210855774U - Sludge drying system

Info

Publication number: CN210855774U
Application number: CN201921697442.0U
Authority: CN
Inventors: 赵誉; 张帅; 王志文
Original assignee: Individual
Current assignee: Ji Bowen
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-06-26
Anticipated expiration: 2029-10-11

Abstract

A sludge drying system comprises a conveying device connected with a bin, a drying device connected with the conveying device, and a discharging device used for outputting dried sludge, wherein the bin comprises a first bin and a second bin, the conveying device comprises a first conveying mechanism connected with the first bin, a second conveying mechanism connected with the second bin, a noodle maker connected with the first conveying mechanism and the second conveying mechanism, a distributor positioned below the noodle maker, and a mesh belt connected with the distributor, the first conveying mechanism comprises a sludge discharge screw conveyor, a sludge conveying pump and a sludge conveying pipeline, the other end of the pipeline is connected with the noodle maker, the drying device comprises a plurality of drying machine bodies which are independent from each other, the drying machine bodies are 2-15, each drying machine body comprises a drying chamber and an air chamber, a drying partition plate is arranged between each drying chamber and the air chamber, and a material stirring device and a spraying device are arranged in each drying chamber, set up circulating fan on the wind cavity, the utility model discloses simple structure, convenient to use, transport are safe smooth and easy.

Description

Sludge drying system

Technical Field

The utility model relates to a sludge treatment technical field especially relates to a sludge drying system.

Background

Sludge drying, also known as sludge dewatering, refers to a process of removing most of the water content from sludge by the action of percolation or evaporation, and generally refers to the use of self-evaporation facilities such as sludge drying beds (beds). After the sludge is concentrated, the water content of the sludge is further reduced by a physical method, so that the sludge is convenient to transport, accumulate, utilize or further treat. Dehydration (anhydration) includes two methods, natural evaporation and mechanical dehydration. The mechanical dehydration method is traditionally called sludge dehydration, and the natural evaporation method is called sludge drying. Although the methods are different, the method is a measure for further reducing the water content of the sludge. The high-viscosity sludge drying equipment generally adopts a hot air rotary-vane drier, and can adopt a double-shaft rotary-vane drier (vertical type, horizontal type) and a three-shaft rotary-vane drier (horizontal type) according to different sludge viscosities, so that a high-humidity material with the initial water content of less than 85 percent can be dried to the final water content of less than 12 percent in one step, and the drying time is short, and is generally 2 to 10 minutes. Since the high-speed stirring blade vigorously stirs the wet material, the wet material can be in good contact with the hot air. The moisture of the material in the front half part of the machine is quickly evaporated, and the temperature of the hot air in the machine is sharply reduced, so that the temperature rise of the material is not high even if high-temperature hot air is used. In the prior art, the sludge drying treatment process has certain potential safety hazard due to the problem of unsmooth conveying.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a sludge drying system which has simple structure, convenient use and safe and smooth conveying.

The utility model discloses a realize through following technical scheme:

a sludge drying system comprises a conveying device connected with a bin and used for conveying sludge, a discharging device connected with the conveying device and used for making a sludge drying device and used for outputting dried sludge, wherein the bin comprises a first bin and a second bin, the conveying device comprises a first conveying mechanism connected with the first bin, a second conveying mechanism connected with the second bin, a noodle maker connected with the first conveying mechanism and the second conveying mechanism, a distributor positioned below the noodle maker and a mesh belt connected with the distributor, the first conveying mechanism comprises a sludge discharging screw conveyor connected with the bottom of the first bin, a sludge conveying pump connected with the sludge discharging screw conveyor and a sludge conveying pipeline connected with the sludge conveying pump, the other end of the sludge conveying pipeline is connected with the noodle maker, the drying device comprises a plurality of drying machine bodies which are mutually independent, the number of the drying machine bodies is 2-15, each drying machine body comprises a drying cavity and an air chamber, a partition plate is arranged between each drying cavity and the corresponding air chamber, a material stirring device and a spraying device are arranged in each drying cavity, and a circulating fan is arranged on each air chamber.

Preferably, the drying machine body is provided with an air inlet which is positioned on one side of the air cavity and communicated with the air cavity, an air outlet which is positioned on one side of the drying cavity and communicated with the drying cavity, and the top of the drying cavity is provided with a guide plate with a curved longitudinal section.

Preferably, the mummification device still includes combustor, hot-blast furnace, air inlet fan, intake stack, circulating fan, discharge fan, exhaust pipe, intake stack and air intake connection, exhaust pipe is connected with the air outlet, be equipped with the adjusting valve who is used for adjusting the intake on the intake stack, be equipped with temperature sensor in the mummification main part, adjusting valve and temperature sensor all connection director.

Preferably, the exhaust pipeline is provided with a carbon monoxide detector.

Preferably, the exhaust fan is connected with an exhaust pipeline, the other end of the exhaust pipeline is connected with an inlet of the air-air heat exchanger, and an outlet of the air-air heat exchanger is connected with the air inlet pipeline.

Preferably, the second conveying mechanism comprises a carriage discharging machine connected with the bottom of the second storage bin and a scraper conveyor connected with the carriage discharging machine.

Preferably, the mesh belt is provided with 1-7 layers and comprises a plurality of steel plates which are connected in sequence, and a plurality of strip-shaped holes are uniformly formed in the steel plates.

Preferably, the length of the strip-shaped holes is 20-50mm, the width of the strip-shaped holes is 4-10mm, the distance between the central axes of two adjacent strip-shaped holes along the length direction is 10-20mm, and the distance between the central axes of two adjacent strip-shaped holes along the width direction is 15-30 mm.

Preferably, the discharging device comprises a trolley for containing and transferring the dry sludge, a crane for lifting the trolley, a dry sludge bin for finally containing the dry sludge, and a belt conveyor for conveying the dry sludge to the dry sludge bin.

The beneficial effects of the utility model reside in that: the utility model has simple structure and convenient use, is provided with a mud output screw conveyor, a mud conveying pump and a mud conveying pipeline, the mud conveying pump directly conveys the mud in the first bin to a noodle machine through a mud conveying channel for forming and extruding, and the conveying process is safe and smooth; the mesh belt is arranged and constructed by a plurality of steel plates which are sequentially connected, a plurality of strip-shaped holes are uniformly formed in the steel plates, and the steel plates are stainless steel plates, so that the mesh belt is high in strength, long in service life and safe and smooth in conveying process; the discharging device is arranged and comprises a trolley for containing dry sludge, a crane for lifting the trolley and a belt conveyor for conveying the dry sludge to a buffer bin, and the trolley is provided with a belt conveying structure, so that the safety and smoothness of the conveying process are ensured, and the material breakage is prevented; arranging an air-air heat exchanger, and recycling and preheating; an adjusting valve for adjusting the air inlet amount is arranged on the air inlet pipeline, a temperature sensor is arranged in the drying machine body, and the adjusting valve and the temperature sensor are both connected with a controller and can automatically control the air inlet amount.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the steel plate of the present invention;

fig. 3 is a schematic structural view of the first conveying mechanism of the present invention;

FIG. 4 is a schematic structural view of the drying apparatus of the present invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a cross-sectional view taken along the line A-A;

wherein: the sludge drying device comprises a first storage bin 1, a sludge discharging screw conveyor 2, a sludge conveying pump 3, a sludge conveying pipeline 4, a second storage bin 5, a sliding frame discharging machine 6, a scraper conveyor 7, a distributor 8, an air inlet fan 9, a combustor hot air furnace 10, a first air inlet channel 11, a second air inlet channel 12, a discharge fan 13, an air-air heat exchanger 14, a circulating fan 15, an air cavity 16, a drying machine body 17, an air inlet 18, a steel plate 19, a strip-shaped hole 20, an air outlet 21, a partition plate 22, a drying cavity 23 and a guide plate 24.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-6, a sludge drying system is applied to solid wastes such as garbage and sludge with a water content of 40-85%, and comprises a conveying device connected with a bin and used for conveying sludge, a drying device connected with the conveying device and used for drying sludge, and a discharging device used for outputting dried sludge, wherein the bin comprises a first bin 1 and a second bin 5, the first bin 1 is a wet sludge bin with a water content of 80%, the second bin 5 is a wet sludge bin with a water content of 60%, the conveying device comprises a first conveying mechanism connected with the first bin 1, a second conveying mechanism connected with the second bin 5, a noodle maker connected with the first conveying mechanism and the second conveying mechanism, a distributing device 8 positioned below the noodle maker, and a mesh belt connected with the distributing device 8, the first conveying mechanism comprises a sludge discharge screw conveyor 2 connected with the bottom of the first bin 1, The other end of the pipeline is connected with the noodle maker, the second conveying mechanism comprises a sliding frame discharging machine 6 connected with the bottom of the second storage bin 5 and a scraper conveyor 7 connected with the sliding frame discharging machine 6, and the scraper conveyor 7 conveys wet sludge with 60% of water content into the noodle maker. Wet sludge with the water content of 80 percent is conveyed into a noodle maker through a sludge outlet screw conveyor 2, a sludge conveying pump 3 and a sludge conveying pipeline 4, is molded through the noodle maker, is distributed through a distributing device 8, and is conveyed through a mesh belt, wherein the number of the mesh belts is 4. And (3) carrying out 50m high-volume cultivation on the wet sludge bin with the water content of 80% and carrying out 60m high-volume cultivation on the wet sludge bin with the water content of 60%. The tops of the 80% moisture content wet sludge bin and the 60% moisture content wet sludge bin are provided with ultrasonic material level meters which are used for detecting the material level of the sludge and participating in the control of the system. The wet sludge bin with the water content of 80% and the wet sludge bin with the water content of 60% are both provided with electric opening and closing upper covers, so that gas is prevented from overflowing, and the upper covers are lifted and descended by an operator through button operation. The proximity switch detects that the switch is in place and the switch is in place. The cover can be opened only when the button is pressed, which is a requirement for safe operation, and the bin cover can accept external truck-carried sludge after being opened. A set of grating is installed below the upper cover of the 80% water content wet sludge bin and the 60% water content wet sludge bin, and is used for preventing large foreign matters from entering the drying system. The pore diameter is 200 x 200 mm. And the smooth blanking is ensured. A carriage discharging machine 6 is arranged in a wet sludge bin with the water content of 60%, and sludge is conveyed to a scraper conveyor 7 in an active mode, so that the bridging problem of the sludge with the water content of 60% is solved. A mud screw conveyor 2 is arranged at the bottom of the wet sludge bin with the water content of 80%, sludge is conveyed into a sludge conveying pump 3 in an active mode, and then is pumped into a sludge conveying pipeline 4 through the sludge conveying pump 3, so that the wet sludge with the water content of 80% can be conveyed safely and smoothly. The sludge conveying pipeline 4 adopts a 304SS stainless steel seamless steel pipe with the wall thickness of 4 mm. The scraper conveyor 7 adopts a chain scraper conveyor 7, and a main shaft, a chain wheel and a chain of the chain scraper conveyor 7 are made of alloy steel. The teeth of the chain wheel are subjected to high-frequency quenching treatment, and the teeth can be replaced; the chain is provided with a tensioning device. The chain plate is made of carbon steel, the surface of the chain connecting bolt is hardened, the hardness of the chain connecting bolt is not less than HRc62, the chain connecting bolt is provided with a locking washer and does not loosen in operation, the pin shaft is made of 45 steel through quenching and tempering, the quenching hardness of the pin shaft is HRC40, the conveying groove is made of carbon steel, the bottom plate of the conveying groove is 8mm in thickness, the side plate of the conveying groove is 6mm in thickness, the panel of the conveying groove is 4mm in thickness, the guide rail is made of alloy steel and is fastened by a galvanized bolt, and a wear-resistant lining plate. The noodle maker comprises an 80% wet sludge noodle maker and a 60% wet sludge noodle maker, wherein the 80% wet sludge noodle maker adopts an SM noodle forming machine and is used for paste to obtain the high-consistency accumulation of sludge, reduce the fluidity and obtain the ideal volume and surface area ratio. Can make the sludge noodles uniformly stacked on the conveyer belt. The totally-enclosed noodle forming machine comprises a sludge distributor, a rotary scraper, a cleaning device and the like. The sludge pump provides a pressure of 6-10bar and the sludge is fed through a sludge-free feed line into a sludge distributor where the sludge is extruded through die holes to form noodles. The 60% wet sludge noodle machine comprises a sludge distribution and feeding unit, sludge cakes are input into a hopper of a dryer distributor, and a built-in mechanism uniformly distributes the sludge on the width of the whole container through reciprocating motion. The solid content of the sludge in the sludge can be about 30-50%. The distributor hopper is also used as a small storage bin, the material level is monitored by an ultrasonic material level probe, and then start and stop are controlled. The distributor is reciprocated through a limit switch to trigger a commutation signal. The mud cakes are discharged from the distributor to a noodle maker through the feeding roller, and the rotating speed of the feeding roller is variable-frequency adjustable. The sludge feeding amount of the drying machine can be adjusted by adjusting the frequency of the motor. Noodle machines are used with pastes to achieve a high degree of consistent packing, reduced flow, and desirable volume and surface area ratios. The noodle maker consists of a box frame, a pair of compression rollers and a driving unit, wherein the compression rollers are steel rollers with a plurality of concave-convex parts, and two tail end supports form a supporting base of the compression rollers, support the driving unit and play a role of a supporting structure. The two press rollers are respectively driven by two motors.

The guipure is constructed by the steel sheet 19 that connects gradually, has evenly seted up bar hole 20 on the steel sheet 19, and the length in bar hole 20 is 35mm, and the width in bar hole 20 is 7mm, and two adjacent bar holes 20 are along the distance between length direction's the center pin for 15mm, and two adjacent bar holes 20 are along the distance between width direction's the center pin for 22 mm. The drying device comprises 5 mutually independent drying machine bodies 17, wherein the 5 drying machine bodies 17 are arranged in a row in parallel, an air inlet 18 is formed in the side wall of each 5 drying machine body 17, a circulating fan 15 is installed at the top of each 5 drying machine body 17, an air cavity 16 is connected below the circulating fan 15, each drying machine body comprises a feeding cavity, the cavity comprises a frame with a sludge feeding opening, a bottom panel is provided with a discharge groove and a discharge groove, the opening is used for discharging final products, and the side wall supports a top frame. All connections are sealed by high-temperature silica gel, and the chamber is provided with a door so as to be convenient for detecting and cleaning all parts in the chamber. The drying machine body comprises a drying chamber 23 and an air chamber 16, the drying chamber 23 and the air chamber 16 comprise heat-insulating top and bottom frames, side walls support the top frame, and the drying chamber 23 and the air chamber 16 are separated by a partition plate 22. The top is installed guide plate 24 in the mummification cavity, and the longitudinal section of guide plate 24 is the arc, and the guide plate provides even air current for the mud on the conveyer belt, and all connections have all been sealed with 300 degrees high temperature resistant silica gel. The two sides of the door are opened so as to be convenient for detecting and cleaning all the components in the cavity. A circulation fan 15 is fixed to the top frame of each wind chamber 16. The material inversion chamber includes a top insulated panel. The side walls support a top frame and a discharge chute is used to transfer material from the top conveyor to the bottom conveyor. All connections are sealed by 300-DEG C high-temperature resistant silica gel, and the chamber is provided with a door so as to be convenient for detecting and cleaning all parts in the chamber. The drying machine main body is also internally provided with a spraying device, and the spraying device comprises a water inlet pipe and nozzles uniformly distributed on the water inlet pipe. Movable branch pipes are respectively arranged above the upper and lower conveyor belts every two meters, and each branch pipe is provided with 5 nozzles. The nozzle covers the whole mesh belt width, a water inlet pipe DN50, a flange connection, PN6, branch pipes DN25 and all materials SS 304. The drying machine main body is internally provided with a material stirring device which comprises a motor, a rotating shaft and a material stirring sheet, wherein the material stirring sheet is uniformly distributed on the rotating shaft and is used for stirring the material along with the rotation of the rotating shaft. The drying device also comprises a combustor hot blast stove 10, an air inlet fan 9, an air inlet pipeline, a circulating fan 15, a discharge fan 13 and an exhaust pipeline, wherein the air inlet pipeline comprises a first air inlet pipeline 11 and a second air inlet pipeline 12 which are communicated, a carbon monoxide detector is arranged on the exhaust pipeline, the model of the carbon monoxide detector is MOT500-CO, the discharge fan 13 is connected with the exhaust pipeline, the other end of the exhaust pipeline is connected with an inlet of an air-air heat exchanger 14, an outlet of the air-air heat exchanger 14 is connected with the second air inlet pipeline 12, the second air inlet pipeline 12 is connected with the first air inlet pipeline 11, the first air inlet pipeline 11 is connected with the combustor hot blast stove 10, the air inlet fan is connected with the combustor hot blast stove 10, the air heat exchanger 14 can be recycled and preheated, an adjusting valve for adjusting the air inlet amount is arranged on the air inlet pipeline, a temperature sensor is arranged in the drying machine body, and the, the air inlet amount can be automatically controlled. The discharging device comprises a trolley for containing and transferring the dry sludge, a crane for lifting the trolley, a dry sludge bin for finally containing the dry sludge, and a belt conveyor for conveying the dry sludge to the dry sludge bin. The dry sludge particles can prevent the material from being broken during the conveying process.

Example 2

This example differs from example 1 only in that: the guipure is 1, and the length of bar hole 20 is 20mm, and the width in bar hole 20 is 4mm, and two adjacent bar holes 20 are 10mm along the distance between length direction's the center pin, and two adjacent bar holes 20 are 15mm along the distance between width direction's the center pin.

Example 3

This example differs from example 1 only in that: the guipure is 7, and the length of bar hole 20 is 50mm, and the width of bar hole 20 is 10mm, and two adjacent bar holes 20 are along the distance between length direction's the center pin for 20mm, and two adjacent bar holes 20 are along the distance between width direction's the center pin for 30 mm.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a sludge drying system, include be connected with the feed bin and be used for carrying the conveyor of mud, with conveyor connects and is used for making the mummification of mud mummification the mummification device, is used for the discharging device of the mud output of mummification, its characterized in that: the storage bin comprises a first storage bin and a second storage bin, the conveying device comprises a first conveying mechanism connected with the first storage bin, a second conveying mechanism connected with the second storage bin, a noodle maker connected with the first conveying mechanism and the second conveying mechanism, a distributor located below the noodle maker and a mesh belt connected with the distributor, the first conveying mechanism comprises a mud outlet screw conveyor connected with the bottom of the first storage bin, a sludge conveying pump connected with the mud outlet screw conveyor and a sludge conveying pipeline connected with the sludge conveying pump, the other end of the sludge conveying pipeline is connected with the noodle maker, the drying device comprises a plurality of drying machine bodies which are independent from each other, the drying machine bodies are arranged in a range of 2-15, each drying machine body comprises a drying chamber and an air chamber, and a partition plate is arranged between each drying chamber and the air chamber, a material stirring device and a spraying device are arranged in the drying chamber, and a circulating fan is arranged on the air chamber.

2. The sludge drying system of claim 1, wherein: set up on the mummification machine body be located wind chamber one side and with the air intake of wind chamber intercommunication, be located mummification cavity one side and with the air outlet of mummification cavity intercommunication, the top of mummification cavity is equipped with the guide plate that the longitudinal section is curved.

3. The sludge drying system of claim 2, wherein: the drying device further comprises a burner, a hot blast stove, an air inlet fan, an air inlet pipeline, a circulating fan, a discharge fan and an exhaust pipeline, wherein the air inlet pipeline is connected with an air inlet, the exhaust pipeline is connected with an air outlet, an adjusting valve used for adjusting the air inlet amount is arranged on the air inlet pipeline, a temperature sensor is arranged in the drying machine body, and the adjusting valve and the temperature sensor are connected with a controller.

4. The sludge drying system of claim 3, wherein: and the exhaust pipeline is provided with a carbon monoxide detector.

5. The sludge drying system of claim 4, wherein: the exhaust fan is connected with an exhaust pipeline, the other end of the exhaust pipeline is connected with an inlet of the air-air heat exchanger, and an outlet of the air-air heat exchanger is connected with the air inlet pipeline.

6. The sludge drying system of claim 1, wherein: the second conveying mechanism comprises a sliding frame discharging machine connected with the bottom of the second storage bin and a scraper conveyor connected with the sliding frame discharging machine.

7. The sludge drying system of claim 1, wherein: the guipure sets up 1-7 layers, the guipure includes a plurality of steel sheets that connect gradually, evenly seted up a plurality of bar holes on the steel sheet.

8. The sludge drying system of claim 7, wherein: the length of the strip-shaped holes is 20-50mm, the width of the strip-shaped holes is 4-10mm, the distance between the central shafts of two adjacent strip-shaped holes in the length direction is 10-20mm, and the distance between the central shafts of two adjacent strip-shaped holes in the width direction is 15-30 mm.

9. The sludge drying system of claim 1, wherein: the discharging device comprises a trolley for containing and transferring dry sludge, a crane for lifting the trolley, a dry sludge bin for finally containing the dry sludge, and a belt conveyor for conveying the dry sludge to the dry sludge bin.