CN211999422U

CN211999422U - Double-roller mechanical compaction sludge dewatering machine for industrial application

Info

Publication number: CN211999422U
Application number: CN201922237073.3U
Authority: CN
Inventors: 郑振; 易进翔; 邓凯; 肖世榕; 潘耀森; 戴仁辉; 刘梅
Original assignee: East China Institute of Technology
Current assignee: East China Institute of Technology
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-11-24
Anticipated expiration: 2029-12-13

Abstract

The utility model provides a double-roller mechanical compaction sludge dewaterer of industrialization application, including mixing stirred tank and conveyer belt, the bottom cover of mixing stirred tank has the filter bag, the conveyer belt is two sets of altogether, and is two sets of be provided with double-roller mechanical compaction hydroextractor in the middle of the conveyer belt, double-roller mechanical compaction hydroextractor below is provided with the effluent water sump, the filter bag is located the left the top of conveyer belt left end, it is right-hand the right-hand member below of conveyer belt is provided with the sludge recycling pond, the utility model discloses a to double-roller mechanical compaction hydroextractor's use, can utilize the symmetry from top to bottom to give the compression roller to apply the load to the pocket type track and extrude out with the sludge water in the track. The sludge water that extrudes gets into the effluent water sump, because pocket type track transportation, can make things convenient for the transportation greatly, improves conveying efficiency.

Description

Double-roller mechanical compaction sludge dewatering machine for industrial application

Technical Field

The utility model relates to a sludge treatment equipment technical field specifically is a two roller machinery compaction sludge dewaterers of industrialization application.

Background

The untreated sludge has extremely high water content which can reach 99 percent or even higher, and the sludge with high water content is inconvenient to transport and can not reach the condition of sludge utilization. It is required to be subjected to dehydration treatment. The water in the sludge exists in four forms: interstitial water, capillary bound water, surface adsorbed water and internal bound water. The capillary water can be mostly removed under the action of mechanical compaction, but the interstitial water, surface adsorbed water and internal combined water are difficult to remove by only mechanical compaction dehydration, and chemical agents are required to be added to destroy sludge flocs, bacteria and the like so as to improve the dehydration performance. The current industrial production flow of sludge compaction and dehydration comprises a natural drying process, a mechanical dehydration process, an acid treatment process, an advanced oxidation process, freezing and thawing and other processes. These processes are mainly based on physical compaction of the water or chemical breakdown of the floc structure before dewatering.

Sludge dewatering is mainly divided into two treatment methods: physical and mechanical compaction dehydration and chemical decomposition of floccules for dehydration. In physical mechanical compaction dehydration, a vacuum filtration dehydration process, a centrifugal dehydration process and a filter pressing dehydration process can be carried out according to the dehydration working principle. The belt type dehydration process has the water content of the discharged mud of about 82 percent; the plate-and-frame type dehydration process can reduce the water content of the sludge to 65-75 percent usually, but a water film on the filter cloth can obstruct the removal of water in the sludge to reduce the dehydration efficiency, the filter cloth is troublesome to replace, the maintenance cost is high, and the like. Centrifugal dehydration is widely applied to various industries, and the water content of the discharged mud is generally 75% -80%, but the dehydration requirement can not be met far away.

In the removal of water by chemical breakdown of floc structures, mainly by destruction of floc structures (exopolymers, polysaccharides and proteins) in the excess sludge. The acid treatment is to destroy extracellular polymer of sludge to dissociate water on the surface of sludge under acidic condition, so as to improve the dehydration performance of excess sludge and reduce the water content of excess sludge. The principles of freezing and thawing process are different. However, these chemical methods are expensive, mostly disposable, and the reuse rate is not high, and the machine treatment of the treated sludge is not convenient. At present, most sewage treatment plants divide chemical treatment and physical mechanical compaction dehydration into two areas for carrying out integrated treatment, so that the integrated treatment is difficult to carry out. The sludge is not convenient enough to be transferred into the sludge compacting and dewatering machine from the sludge stirring reaction tank, and is slightly fussy.

Based on this, the utility model designs a two roller machinery compaction sludge dewaterers of industrialization application to solve how to realize high-efficient ground sludge dewatering operation problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double-roller mechanical compaction sludge dewaterer of industrialization application to solve the traditional ground sludge dewatering operation that proposes in the above-mentioned background art comparatively loaded down with trivial details, and the relatively poor, the inefficiency problem of dehydration effect.

In order to achieve the above object, the utility model provides a following technical scheme: the industrially applied double-roller mechanical compaction sludge dehydrator comprises a mixing stirring kettle and two groups of conveying belts, wherein filter bags are sleeved at the bottom of the mixing stirring kettle, the double groups of conveying belts are arranged, the double-roller mechanical compaction dehydrator is arranged between the two groups of conveying belts, a sewage pool is arranged below the double-roller mechanical compaction dehydrator, the filter bags are positioned above the left end of the left conveying belt, and a sludge recovery pool is arranged below the right end of the right conveying belt;

the double-roller mechanical compaction dehydrator comprises side plates, the side plates are two groups, the side plates are symmetrically arranged in the front and back direction and are two groups, pressure applying rollers are evenly arranged between the side plates, bearings are mounted on shaft rods at the front end and the back end of each pressure applying roller, the bearings are embedded on plate bodies of the side plates, belt pulleys are mounted at the end parts of the shaft rods at the front ends of the pressure applying rollers, belts are connected between every two adjacent groups of belt pulleys, the right sides of the front walls of the belts are connected with motors, guide plates are welded at the left ends and the right ends of clamping cavities at the lower parts of the side plates, and filter plates are welded at the bottom.

Preferably, the bottom of the mixing and stirring kettle is provided with a sludge discharge port, and a stop valve is installed at the sludge discharge port.

Preferably, the filter bag is a pocket filter bag with an opening at one end, and a bag body of the filter bag is woven by a filter screen.

Preferably, the pressure applying roller is divided into two rows which are symmetrical up and down, and the pressure applying rollers are not contacted with each other.

Preferably, baffles are arranged on two sides of the conveyor belt.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a to the use of twin-drum machinery compaction hydroextractor, can utilize the symmetry from top to bottom to give the compression roller to apply the load to the pocket type track and extrude out with the sludge water in the track. The sludge water that extrudes gets into the effluent water sump, because pocket type track transportation, can make things convenient for the transportation greatly, improves conveying efficiency.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic view of the structure of the filter bag of the present invention;

FIG. 3 is a schematic structural view of a double-roller mechanical compacting dehydrator of the present invention;

fig. 4 is a schematic diagram of the structure of the double-roller mechanical compaction dehydrator of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

100-mixing stirring kettle, 200-filter bag, 300-conveyor belt, 400-double-roller mechanical compaction dehydrator, 410-side plate, 420-pressure-applying roller, 430-belt pulley, 440-belt, 450-motor, 460-guide plate, 470-filter plate, 500-sewage pool and 600-sludge recovery pool.

Detailed Description

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a double-roller mechanical compaction sludge dewatering machine for industrial application comprises a mixing stirring kettle 100 and two groups of conveying belts 300, wherein filter bags 200 are sleeved at the bottom of the mixing stirring kettle 100, the conveying belts 300 are arranged in two groups, a double-roller mechanical compaction dewatering machine 400 is arranged between the two groups of conveying belts 300, a sewage pool 500 is arranged below the double-roller mechanical compaction dewatering machine 400, the filter bags 200 are positioned above the left end of a left conveying belt 300, and a sludge recovery pool 600 is arranged below the right end of a right conveying belt 300;

the double-roller mechanical compaction dehydrator 400 comprises side plates 410, the side plates 410 are two groups, the two groups of side plates 410 are symmetrically arranged front and back, a pressure applying roller 420 is uniformly arranged between the two groups of side plates 410, bearings are mounted on shaft rods at the front end and the rear end of the pressure applying roller 420, the bearings are embedded on a plate body of the side plates 410, belt pulleys 430 are mounted at the end parts of the shaft rods at the front ends of the pressure applying roller 420, a belt 440 is connected between the two adjacent groups of belt pulleys 430, a motor 450 is connected to the front wall of the rightmost belt 440, guide plates 460 are welded at the left end and the right end of a clamping cavity at the lower part of each side plate.

Further, the bottom of the mixing and stirring kettle 100 is provided with a sludge discharge port, and a stop valve is installed at the sludge discharge port, so that the sludge discharge is conveniently controlled.

Furthermore, the filter bag 200 is a pocket filter bag with an opening at one end, and the bag body of the filter bag 200 is woven by a filter screen, so that water liquid in sludge can be conveniently extruded.

Further, the pressure applying roller 420 is divided into two rows which are symmetrical up and down, and the pressure applying roller 420 is not contacted with each other, so that the pressure applying roller 420 can rotate in the same direction conveniently.

Furthermore, the baffles are arranged on the two sides of the conveyor belt 300, so that water liquid in the sludge can be prevented from flowing randomly.

One specific application of this embodiment is: the utility model discloses in, two roller machinery compaction hydroextractor are by a crowd of longitudinal symmetry's endow compression roller 420 and constitute, utilize that endow the contact surface between the compression roller 420 and carry out the compaction dehydration to mud, two rollers possess bigger endow pressure load and enough little area of contact, can give the bigger compressive stress of mud, obtain better dehydration effect. And compared with the massive sludge, the sheet sludge has better dewatering effect. The external protection structure of the sewage treatment device consists of a sewage tank 500 and a sludge recovery tank 600 and is used for collecting water removed from compacted sludge and mud cakes after water removal; the internal structure is protected from being influenced; and stain resistance and prevention of odor spillage. The mixing and stirring kettle 100 is used for stirring and reacting sludge and chemical reagents, destroying floccules in the sludge and improving the sludge dewatering performance. The stop valve at the bottom of the mixing and stirring tank 100 can freely close and open the sludge discharge port of the mixing and stirring tank 100, and the structure is to directly convey the chemical agent-doped sludge into the filter bag 200 by using gravity. The filter bag 200 is woven by a filter screen, one end of the filter bag is closed, and the other end of the filter bag is opened to fill sludge. The pocket type caterpillar is installed at a sludge discharge port of the mixing and stirring tank 100, and the opening end is closed after the sludge is filled in the filter bag 200. Thus, the problem that the sludge does not enter the double-roller mechanical compaction dehydrator 400 can be solved. The design pocket type filter bag 200 is a line use, and a filter bag 200 only is used for a sludge compaction dehydration, can solve the problem that mud blocks up the track when filter bag 200 uses repeatedly like this to because of mud is placed in pocket type filter bag 200, the bagged mud after the dehydration can directly be loaded onto a car and transported. The conveyor belt 300 is of a type with baffles on two sides, and the conveyor belt can prevent sludge water in sludge from flowing randomly and is beneficial to avoiding pollution caused by sewage turbulence.

The utility model discloses in, two roller machinery compaction hydroextractor 400 comprises a crowd of the pressure roller 420 of endowing of symmetry from top to bottom, endows pressure roller 420 rough surface. The filter bag 200 is brought into the dual drum mechanical compaction extractor 400 by the weighted roller drum 420. The vertically symmetrical pressure-applying roller 420 applies a load to the filter bag 200 to press out the sludge water in the caterpillar. The extruded sludge water enters the sewage tank 500, and the dewatered sludge cake enters the sludge recovery tank 600 to separate sludge from water. After the compaction treatment of the double-roller mechanical compaction dehydrator 400, the sludge is compressed into sheets, the thickness of the sludge is much thinner than that of the sludge treated by the plate-and-frame filter press, and thus the dehydration effect of the sludge can be greatly improved. In the process of transporting the sludge, the sludge is transported by the pocket-type filter bag 200, so that the transportation process is greatly facilitated, and the transportation efficiency is improved.

The utility model discloses in, specifically operate: the self-cleaning industrial sludge dewatering production technology comprises the following steps

Firstly, the sludge and the chemical agent are poured into a mixing and stirring kettle 100, and the sludge and the dehydration chemical agent are stirred and react in the mixing and stirring kettle 100 to destroy floccules in the sludge. When the chemical reaction time reaches the standard, a sludge discharge port at the lower end of the mixing and stirring kettle 100 is opened, so that the sludge enters a filter bag 200 installed at the sludge discharge port.

Secondly, after the sludge is bagged, the filter bag 200 is sealed, so that the port is prevented from being extruded and burst in the mechanical compaction and dehydration process. The filter bag 200 is transported to a double-roller mechanical compacting and dewatering machine 400 by using a conveyor belt 300 with baffles on two sides for compacting and dewatering.

Thirdly, the compression roller 420 inside the double-roller mechanical compaction dehydrator 400 presses the filter bag 200, the thinner the sludge in the filter bag 200 is, the more the sludge water in the sludge is extruded and enters the sewage tank 500, and the dehydrated sludge cake is transported to the sludge recovery tank 600.

The utility model discloses in, give a compression roller 420's drive mode is, through the rightmost belt pulley 430 entrance rotation of motor 450 drive, belt pulley 430 is double sheave, through rightmost belt pulley 430's rotation, cooperation belt 440 carries out the syntropy to adjacent belt pulley 430 and rotates to the various compression roller 420 that give of drive carry out the syntropy and rotate.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations. In the description herein, references to the description of "one embodiment," "an example," "a specific example," 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A double-roller mechanical compaction sludge dewatering machine for industrial application comprises a mixing stirring kettle (100) and a conveyor belt (300), and is characterized in that: the bottom of the mixing stirring kettle (100) is sleeved with filter bags (200), the number of the conveyor belts (300) is two, a double-roller mechanical compaction dehydrator (400) is arranged between the two sets of the conveyor belts (300), a sewage pool (500) is arranged below the double-roller mechanical compaction dehydrator (400), the filter bags (200) are positioned above the left end of the left conveyor belt (300), and a sludge recovery pool (600) is arranged below the right end of the right conveyor belt (300);

two roller machinery compaction hydroextractor (400) are including curb plate (410), and curb plate (410) are two sets of altogether, and are two sets of symmetry form setting around curb plate (410) is, and are two sets of evenly be provided with between curb plate (410) and give pressure roller (420), install the bearing on the axostylus axostyle at both ends around giving pressure roller (420), the bearing inlays on the plate body of curb plate (410), give the axostylus axostyle tip of pressure roller (420) front end and install belt pulley (430), be connected with belt (440) between adjacent two sets of belt pulley (430), the rightmost side belt (440) antetheca is connected with motor (450), curb plate (410) lower part presss from both sides the chamber and all welds deflector (460) in both ends about, curb plate (410) press from both sides the bottom welding in chamber and have filter plate.

2. The industrially applicable double-roller mechanically compacted sludge dewatering machine according to claim 1, characterized in that: the bottom of mixing stirred tank (100) is provided with the mud discharge port, stop valve is installed to mud discharge port department.

3. The industrially applicable double-roller mechanically compacted sludge dewatering machine according to claim 1, characterized in that: the filter bag (200) is a pocket type filter bag with an opening at one end, and the bag body of the filter bag (200) is woven by a filter screen.

4. The industrially applicable double-roller mechanically compacted sludge dewatering machine according to claim 1, characterized in that: the pressure applying rollers (420) are divided into two rows which are symmetrical up and down, and the pressure applying rollers (420) are not contacted with each other.

5. The industrially applicable double-roller mechanically compacted sludge dewatering machine according to claim 1, characterized in that: and baffles are arranged on two sides of the conveyor belt (300).