CN212387940U

CN212387940U - System for saline and alkaline landscape soil amendment is prepared to town's mud

Info

Publication number: CN212387940U
Application number: CN202021048813.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Tianjin Neuiger Biotechnology Co ltd
Current assignee: Tianjin Neuiger Biotechnology Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-01-22
Anticipated expiration: 2030-06-09

Abstract

The utility model provides a system for saline and alkaline landscape soil amendment is prepared to town's mud, including the pyrohydrolysis unit, solid-liquid separation unit, the drying unit that connect gradually, the drying unit includes the drying cabinet, the central axis position department of drying cabinet is equipped with the (mixing) shaft, the top of (mixing) shaft is equipped with a plurality of crushing blades, be equipped with helical blade in the below of crushing blade on the (mixing) shaft. Cities and towns mud preparation salinization gardens soil amendment's system, during the drying, positive reverse motor drive (mixing) shaft is rotatory, helical blade makes mud raise, and the mud that is promoted falls back to the drying tank bottoms portion again under the effect of gravity, realizes stirring the circulation of mud to realize the abundant drying of mud, three crushing blade is rotatory along with the (mixing) shaft simultaneously, rotatory crushing blade is sheared the breakage to the mud that raises up, reduces the volume of sludge block, is convenient for carry out abundant drying to mud.

Description

System for saline and alkaline landscape soil amendment is prepared to town's mud

Technical Field

The utility model belongs to the technical field of sludge treatment, especially, relate to a system of saline and alkaline landscape soil amendment of town's mud preparation.

Background

With the rapid development of social economy, industrialization and urbanization in China, the sewage yield and the sewage treatment capacity are rapidly increased, the sludge yield is greatly increased, the sludge treatment in cities is more and more severe, and the construction of sludge treatment centers is quickened. If the sludge is not well treated, the sludge will bring serious secondary pollution to the environment. The best treatment mode at present is to use the sludge as a soil conditioner after thermal hydrolysis, solid-liquid separation and drying, and the conventional drying mode is natural drying, so that the internal moisture is difficult to diffuse, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a system of saline and alkaline landscape soil amendment is prepared to town mud to when solving mud preparation soil amendment, conventional drying method dries for the nature, and inside moisture is difficult to distribute, the lower problem of efficiency.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a system for preparing a salinized garden soil conditioner by using town sludge comprises a thermal hydrolysis unit, a solid-liquid separation unit and a drying unit which are sequentially connected, wherein the drying unit comprises a drying tank, a feed inlet is formed in the top of the drying tank, the bottom of the drying tank is of a conical structure, a discharge outlet is formed in the bottom of the conical structure, a stirring shaft is arranged at the position of the central axis of the drying tank, a plurality of crushing blades are arranged at the top of the stirring shaft, spiral blades are arranged below the crushing blades on the stirring shaft, the stirring shaft and the spiral blades extend to the discharge outlet, a forward and reverse motor is arranged at the top of the drying tank, the forward and reverse motor penetrates through the drying tank and is fixedly connected with the stirring shaft, a shell is enclosed outside the drying tank, a heating cavity is formed between the shell and the drying tank, and a steam inlet is, and a condensed water outlet is formed in the bottom of the shell.

Furthermore, the thermal hydrolysis unit comprises a thermal hydrolysis tank, a coarse filter and a flash tank which are sequentially connected through a pipeline, a sludge inlet pipe is arranged at the top of the thermal hydrolysis tank, and the bottom of the flash tank is connected to the inlet end of the spiral shell stacking machine through a pipeline.

Further, the top of drying cylinder is equipped with takes out wet purifier, take out wet purifier includes air exhauster, clean room, the inlet end of clean room passes through the pipeline and links to the top of drying cylinder, the end of giving vent to anger of clean room passes through the pipeline and is connected with the air exhauster, install HEPA filter layer, active carbon filter layer, photocatalyst filter layer in the clean room in proper order.

Further, be fixed with a plurality of mud scrapers in proper order along the central axis direction of (mixing) shaft on the (mixing) shaft, the mud scraper includes bracing piece, mud scraper, on bracing piece one end was fixed in the (mixing) shaft, the bracing piece other end and mud scraper fixed connection, mud scraper and fermentation tank inner wall laminating.

Further, the solid-liquid separation unit is a screw stacking machine, and a sludge outlet of the screw stacking machine extends into a feed inlet of the drying tank.

Furthermore, the electromagnetic valves are installed at the feed inlet and the discharge outlet.

Compared with the prior art, system of cities and towns mud preparation salinization gardens soil amendment have following advantage:

(1) the system for preparing the salinized garden soil modifier by using the town sludge is characterized in that during drying, the stirring shaft is driven to rotate by the forward and reverse rotating motor, the helical blades enable the sludge to rise, the lifted sludge falls back to the bottom of the drying tank again under the action of gravity, the sludge is stirred circularly, so that the sludge is fully dried, meanwhile, the three crushing blades rotate along with the stirring shaft, the lifted sludge is sheared and crushed by the rotating crushing blades, the volume of sludge blocks is reduced, the sludge is conveniently and fully dried, the forward and reverse rotating motor can rotate forward and reverse, the helical blades extend to the discharge port, the sludge is ensured to be smoothly discharged out of the drying tank, manpower is saved, and the working efficiency is improved;

(2) the system for preparing the saline-alkali garden soil conditioner by using the town sludge, disclosed by the utility model, has the advantages that the HEPA filter layer of the dehumidifying and purifying device effectively filters large-particle molecules, such as dust raised by sludge drying, and the active carbon filter layer can absorb small-particle molecules in the air, so that the discharged air has no odor, and finally the air is discharged after being sterilized by the photocatalyst filter layer, so that the system is clean and pollution-free;

(3) system of saline and alkaline gardens soil amendment of cities and towns mud preparation, the central axis direction along the (mixing) shaft is fixed with a plurality of mud scrapers in proper order on the (mixing) shaft, mud scrapers include bracing piece, mud scraper, and mud scraper is scraped down on the pivoted in-process is with the inner wall of drying tank, is favorable to reducing heat transfer resistance, improves evaporation efficiency, simultaneously, mud scraper can also play certain stirring effect.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of the overall structure of a system for preparing a saline-alkali soil conditioner from town sludge according to an embodiment of the present invention;

figure 2 is the embodiment of the utility model provides a drying unit of system and dehumidification purifier's of cities and towns mud preparation salinization gardens soil amendment's system structure chart.

Description of reference numerals:

1. a thermal hydrolysis unit; 11. a thermal hydrolysis tank; 12. a coarse filter; 13. a flash tank; 2. a solid-liquid separation unit; 3. a drying unit; 31. a drying tank; 311. a feed inlet; 312. a discharge port; 313. an electromagnetic valve; 32. a stirring shaft; 321. a crushing blade; 322. a helical blade; 323. a positive and negative rotation motor; 33. a housing; 331. a heating cavity; 332. a steam inlet; 333. a condensed water outlet; 34. a mud scraping member; 341. a support bar; 342. a mud scraper; 4. a dehumidification purification device; 41. an exhaust fan; 42. a clean room; 421. a HEPA filter layer; 422. an activated carbon filter layer; 423. a photocatalyst filtering layer.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A system for preparing saline-alkali garden soil conditioner by using town sludge comprises a thermal hydrolysis unit 1, a solid-liquid separation unit 2 and a drying unit 3 which are sequentially connected as shown in figure 1.

The solid-liquid separation unit 2 is a screw stacking machine, and a sludge outlet of the screw stacking machine extends into a feeding hole 311 of the drying tank 31. The spiral shell stacking machine is high in dehydration efficiency, good in dehydration effect and low in energy consumption, and meets the requirement of low energy consumption.

The thermal hydrolysis unit 1 comprises a thermal hydrolysis tank 11, a coarse filter 12 and a flash tank 13 which are sequentially connected through pipelines. The top of the thermal hydrolysis tank 11 is provided with a sludge inlet pipe, and the bottom of the flash tank 13 is connected to the inlet end of the spiral shell stacking machine through a pipeline. The prepared sludge firstly enters a thermal hydrolysis tank 11 for thermal hydrolysis, then enters a coarse filter 12 for removing impurities in the sludge, and finally enters a flash tank 13 for flash evaporation and temperature reduction.

The drying unit 3 comprises a drying tank 31, a feed inlet 311 is arranged at the top of the drying tank 31, the bottom of the drying tank 31 is of a conical structure, a discharge outlet 312 is arranged at the bottom end of the conical structure, and electromagnetic valves 313 are installed on the feed inlet 311 and the discharge outlet 312. The bottom of the drying tank 31 is of a conical structure, so that discharging is facilitated.

The central axis position department of drying can 31 is equipped with (mixing) shaft 32, the top of (mixing) shaft 32 is equipped with three crushing blade 321, and during the feeding, crushing blade 321 can be sheared the sludge block that feed inlet 311 got into and broken, reduces the volume of sludge block, is convenient for carry out abundant drying to mud. Spiral blades 322 are arranged below the crushing blades 321 on the stirring shaft 32, and the stirring shaft 32 and the spiral blades 322 extend to the discharge hole 312. The top of the drying tank 31 is provided with a forward and reverse rotation motor 323, and the forward and reverse rotation motor 323 penetrates through the drying tank 31 and is fixedly connected with the stirring shaft 32.

During the drying, just reversing motor 323 drive (mixing) shaft 32 is rotatory, and helical blade 322 makes mud raise, and the mud that is promoted falls back to drying tank 31 bottom again under the effect of gravity, realizes turning over the circulation of mud to realize the abundant drying of mud, three crushing blade 321 is rotatory along with (mixing) shaft 32 simultaneously, and rotatory crushing blade 321 is sheared the mud of raising, reduces the volume of sludge block, is convenient for carry out abundant drying to mud. The forward and reverse rotation motor 323 can rotate forward and reverse, the spiral blade 322 extends to the discharge port 312, smooth discharge of sludge from the drying tank 31 is guaranteed, manpower is saved, and working efficiency is improved.

The outer side of the drying tank 31 is surrounded by a casing 33, a heating cavity 331 is formed between the casing 33 and the drying tank 31, the top of the casing 33 is provided with a steam inlet 332, and the bottom of the casing 33 is provided with a condensed water outlet 333. Steam enters from the steam inlet 332 and exchanges heat with sludge in the drying tank 31, and at this time, the steam is condensed into condensed water and discharged through the condensed water outlet 333.

A plurality of mud scrapers 34 are fixed with in proper order along the central axis direction of (mixing) shaft 32 on the (mixing) shaft 32, mud scrapers 34 include bracing piece 341, mud scraper 342, bracing piece 341 one end is fixed in on the (mixing) shaft 32, the bracing piece 341 other end and mud scraper 342 fixed connection, mud scraper 342 and the laminating of fermentation tank inner wall. The mud scraper 342 scrapes off the mud on the inner wall of the drying tank 31 in the rotating process, which is beneficial to reducing heat transfer resistance and improving evaporation efficiency. Meanwhile, the mud scraper 342 can also play a certain role in stirring.

The top of the drying tank 31 is provided with a dehumidifying and purifying device 4, and the dehumidifying and purifying device 4 comprises an exhaust fan 41 and a purifying chamber 42. The inlet end of clean room 42 passes through the pipeline and links to the top of drying cylinder 31, the end of giving vent to anger of clean room 42 passes through the pipeline and is connected with air exhauster 41, install HEPA filter layer 421, active carbon filter layer 422, photocatalyst filter layer 423 in the clean room 42 in proper order. The hot air pumped by the exhaust fan 41 passes through the purification chamber 42, the air passes through the HEPA filter layer 421, the activated carbon filter layer 422 and the photocatalyst filter layer 423, the HEPA filter layer 421 effectively filters out large-particle molecules, such as dust raised by sludge drying, and the activated carbon filter layer 422 absorbs small-particle molecules in the air, so that the exhausted air has no odor, and finally the air is exhausted after being sterilized by the photocatalyst filter layer 423, and is clean and pollution-free. In addition, the dehumidifying and purifying device 4 can suck out moisture, which is beneficial to accelerating drying.

The utility model discloses a working process:

the prepared sludge firstly enters a thermal hydrolysis tank 11 for thermal hydrolysis, then enters a coarse filter 12 for removing impurities in the sludge, and finally enters a flash tank 13 for flash evaporation and temperature reduction to finish the thermal hydrolysis process.

And (3) performing solid-liquid separation on the sludge after the thermal hydrolysis process in a screw stacking machine to obtain protein filtrate and semi-dry sludge with the water content of about 40%, collecting the protein filtrate in a raw liquid tank for concentration, conveying the semi-dry sludge into a drying tank 31, and crushing sludge blocks by a crushing blade 321 during feeding to reduce the volume of the sludge blocks and facilitate the full drying of the sludge. During drying, the positive and negative rotation motor 323 drives the stirring shaft 32 to rotate, the helical blade 322 enables sludge to rise, the lifted sludge falls back to the bottom of the drying tank 31 again under the action of gravity, the sludge is turned circularly, heat exchange is carried out between the turning process and steam in the heating cavity 331, the sludge is fully dried, and meanwhile, the crushing blade 321 can crush the sludge completely, so that the sludge is fully dried.

The mud scraper 342 scrapes the mud on the inner wall of the drying tank 31, which is beneficial to reducing the heat transfer resistance and improving the evaporation efficiency. The waste gas produced in the drying process is purified by the dehumidifying and purifying device 4 and then discharged into the atmosphere, and meanwhile, the dehumidifying and purifying device 4 can pump out moisture, which is beneficial to accelerating drying.

After the drying is completed, the electromagnetic valve 313 at the discharge port 312 is opened, and the forward and reverse rotating motor 323 is rotated in the reverse direction to discharge the sludge out of the drying tank 31, and the sludge is cooled and packaged.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a system for saline and alkaline landscape soil amendment is prepared to town's mud which characterized in that: including the pyrohydrolysis unit, solid-liquid separation unit, the drying unit who connects gradually, the drying unit includes the drying chamber, the top of drying chamber is equipped with the feed inlet, the bottom of drying chamber is the toper structure, the bottom of toper structure is equipped with the discharge gate, the central axis position department of drying chamber is equipped with the (mixing) shaft, the top of (mixing) shaft is equipped with a plurality of crushing blades, be equipped with helical blade in the below of crushing blade on the (mixing) shaft, (mixing) shaft and helical blade extend to the discharge gate, the top of drying chamber is equipped with positive reverse motor, positive reverse motor passes drying chamber and (mixing) shaft fixed connection, the outside of drying chamber is enclosed and is equipped with the shell, form the heating chamber between shell and the drying chamber, the top of shell is equipped with steam inlet, the bottom of shell is equipped with the comdens.

2. The system for preparing the saline-alkali soil conditioner for garden use by using the town sludge as claimed in claim 1, wherein the system comprises: the thermal hydrolysis unit comprises a thermal hydrolysis tank, a coarse filter and a flash tank which are sequentially connected through a pipeline, a sludge inlet pipe is arranged at the top of the thermal hydrolysis tank, and the bottom of the flash tank is connected to the inlet end of the spiral shell stacking machine through a pipeline.

3. The system for preparing the saline-alkali soil conditioner for garden use by using the town sludge as claimed in claim 1, wherein the system comprises: the top of drying cabinet is equipped with takes out wet purifier, take out wet purifier and include air exhauster, clean room, the inlet end of clean room passes through the pipeline and links to the top of drying cabinet, the end of giving vent to anger of clean room passes through the pipeline and is connected with the air exhauster, install HEPA filter layer, active carbon filter layer, photocatalyst filter layer in the clean room in proper order.

4. The system for preparing the saline-alkali soil conditioner for garden use by using the town sludge as claimed in claim 1, wherein the system comprises: the stirring shaft is fixed with a plurality of mud scraping pieces in proper order along the central axis direction of (mixing) shaft, the mud scraping piece includes bracing piece, mud scraper, bracing piece one end is fixed in on the (mixing) shaft, the bracing piece other end and mud scraper fixed connection, mud scraper and fermentation tank inner wall are laminated.

5. The system for preparing the saline-alkali soil conditioner for garden use by using the town sludge as claimed in claim 1, wherein the system comprises: the solid-liquid separation unit is a screw stacking machine, and a sludge outlet of the screw stacking machine extends into a feed inlet of the drying tank.

6. The system for preparing the saline-alkali soil conditioner for garden use by using the town sludge as claimed in claim 1, wherein the system comprises: the electromagnetic valves are installed at the feed inlet and the discharge outlet.