CN213895575U

CN213895575U - Blending system for continuous thermal hydrolysis of sludge

Info

Publication number: CN213895575U
Application number: CN202022072303.8U
Authority: CN
Inventors: 郭海军; 洪刚; 李力; 阎怀国; 王津利
Original assignee: United Environmental Technology Tianjin Co ltd
Current assignee: United Environmental Technology Tianjin Co ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-08-06
Anticipated expiration: 2030-09-21

Abstract

The utility model provides a blending system for sludge continuous pyrohydrolysis, which comprises a stirring bin and a filtering bin; the filtering bins are uniformly distributed on the periphery of the stirring bin and communicated with the stirring bin; a stirrer is arranged in the stirring bin, and comprises a rotating shaft, and an upper stirring mechanism and a lower stirring mechanism which are sequentially arranged on the rotating shaft from top to bottom; the upper stirring mechanism comprises a supporting rod, a first scraper and a spiral belt, the supporting rod is horizontally fixed at the upper part of the rotating shaft, and the first scraper is fixed at the end part of the supporting rod; the periphery of the rotating shaft is provided with a plurality of spiral belts with different diameters, and the spiral belts are sequentially arranged from inside to outside along the radial direction of the rotating shaft from small to large according to the diameters; lower rabbling mechanism includes puddler and second scraper blade, and the puddler level is fixed in the pivot, and the tip at the puddler is fixed to the second scraper blade. This deployment system for continuous pyrohydrolysis of mud can effectively go out the grit and realize diluting the mixture of mud, and mix more evenly, no dead angle.

Description

Blending system for continuous thermal hydrolysis of sludge

Technical Field

The utility model relates to a mud continuous thermal hydrolysis equipment field especially relates to a mud continuous thermal hydrolysis is with allotment system.

Background

Sludge is a product after sewage treatment, and is an extremely complex heterogeneous body consisting of organic debris, bacterial cells, inorganic particles, colloids and the like. In the field of municipal sludge treatment, the thermal hydrolysis process is gradually gaining industrial acceptance as a pretreatment means for sludge. The thermal hydrolysis treatment can destroy the colloid structure and the capillary structure of the sludge, break the sludge cells, release the combined water in the cells and the water adsorbed on the surfaces of the cells into free water, improve the fluid performance of the sludge, facilitate the transportation and greatly improve the settling performance and the dehydration performance of the sludge; organic matters in cells are released, macromolecular organic matters are further hydrolyzed into micromolecular substances, the organic matters are favorably transferred from a solid phase to a liquid phase, the ratio of the solid-phase organic matters is reduced, the solid-phase substances are favorably stabilized and finally treated, and favorable conditions are provided for the subsequent degradation and dehydration treatment of sludge organic matters. After the sludge is subjected to thermal hydrolysis at high temperature and high pressure, the sludge can be rapidly innoxiously treated, and the dehydration performance and the water solubility are improved, so that the subsequent treatments such as deep dehydration or anaerobic digestion can be carried out, the stabilization and the reduction of the sludge are finally realized, the methane can be generated, and the resource utilization is realized.

Untreated sludge generally contains impurities such as sand and stones, and if the impurities are not removed, pipelines are blocked; and before carrying out pyrohydrolysis, need first carry out intensive mixing with the mud of multiple sources to dilute mud into the sludge form, current equipment stirs unevenly at the mixing dilution in-process, stirs and has the dead angle, is unfavorable for the further processing to mud.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a blending system for continuous thermal hydrolysis of sludge to solve the above problems.

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

a blending system for sludge continuous thermal hydrolysis comprises a stirring bin and a filtering bin;

the filtering bins are provided with a plurality of filtering bins which are uniformly distributed on the periphery of the stirring bin; the filter bin comprises an upper cylindrical section and a lower conical section, a liquid inlet pipe tangent to the cylindrical section is arranged on the side wall of the cylindrical section, a slurry outlet is formed in the top of the cylindrical section, a filter plate is arranged at the slurry outlet, and a sand and stone outlet is formed in the bottom of the conical section;

the stirring bin also comprises an upper cylindrical section and a lower conical section, the top of the stirring bin is provided with a slurry inlet, and the slurry inlet is connected with the slurry outlet through a connecting pipe; the top of the stirring bin is also connected with a water inlet pipe, and the bottom of the stirring bin is provided with a sludge outlet; a stirrer is arranged in the stirring bin, the stirrer comprises a rotating shaft and an upper stirring mechanism and a lower stirring mechanism which are sequentially arranged on the rotating shaft from top to bottom, and the upper stirring mechanism and the lower stirring mechanism are respectively positioned in the cylindrical section and the conical section of the stirring bin;

the upper stirring mechanism comprises a supporting rod, a first scraper and a spiral belt, the supporting rod is horizontally fixed at the upper part of the rotating shaft, the first scraper is fixed at the end part of the supporting rod, and the first scraper is attached to the side wall of the cylindrical section of the stirring bin; the periphery of the rotating shaft is provided with a plurality of spiral belts with different diameters, and the spiral belts are sequentially arranged from inside to outside along the radial direction of the rotating shaft from small to large in diameter;

lower rabbling mechanism includes puddler and second scraper blade, and the puddler level is fixed in the pivot, and the tip at the puddler is fixed to the second scraper blade, and the second scraper blade is laminated with the circular cone section lateral wall in stirring storehouse mutually.

Further, go up rabbling mechanism still includes flexible stirring subassembly, flexible stirring subassembly includes the chain of a plurality of horizontal settings and/or vertical setting, flexible stirring subassembly sets up between pivot and first scraper blade.

Further, the flexible stirring assembly comprises a plurality of chains which are horizontally and vertically arranged; the upper end of the vertically arranged chain is hinged on the supporting rod, the rotating shaft is also fixedly provided with a connecting rod, and the lower end of the vertically arranged chain is hinged with the connecting rod; one end of a horizontally arranged chain is hinged with the rotating shaft, and the other end of the horizontally arranged chain is hinged with the first scraper.

Further, go up rabbling mechanism still includes dynamic stirring subassembly, dynamic stirring subassembly includes fixed axle and stirring vane, the fixed axle is fixed in the pivot, stirring vane rotates and sets up on the fixed axle.

Furthermore, the number of the support rods is 4, and the support rods are arranged on the rotating shaft in a cross shape; the flexible stirring assembly is provided with 2 groups which are symmetrically arranged below 2 support rods; the dynamic stirring assembly is provided with 2 groups, and the two groups are symmetrically arranged below the other 2 support rods, so that the flexible stirring assembly and the dynamic stirring assembly are alternately arranged at intervals.

Further, the lower stirring mechanism also comprises a helical blade fixedly arranged at the lower part of the rotating shaft.

Further, the diameter of the helical blade is gradually reduced from top to bottom.

Further, the stirrer is driven by a motor arranged outside the stirring bin.

Further, the filter plate is an inverted cone structure.

Compared with the prior art, the blending system for the continuous thermal hydrolysis of the sludge has the following advantages:

(1) mud is allotment system for continuous pyrohydrolysis is equipped with stirring storehouse and a plurality of and filters the storehouse, a plurality of filters the storehouse and can filter the mud of different sources simultaneously or also can improve the filtration efficiency of mud to the mud batch processing simultaneously of same source. The filter bin is provided with a tangential liquid inlet pipe, after sludge enters the filter bin under certain pressure, due to the tangential entering, the sludge can form rotational flow in the filter bin, sand and stone are removed by utilizing the principle of centrifugal separation, namely, the sludge is pushed downwards in a rotating manner, when the sludge reaches a certain part of a conical section, light sludge fluid in the sludge rotates and upwards rotates along the axis of the cylinder, and is filtered by a filter plate at a slurry outlet, and finally, the sludge is discharged from the slurry outlet; and the sand in the sludge falls along the wall surface of the cone under the action of the inertial centrifugal force of the fluid and the gravity of the sludge, so that the screening of the sand is completed. The stirring bin is of an upper cylindrical section structure and a lower conical section structure, and an upper stirring mechanism and a lower stirring mechanism which accord with the structural characteristics of the stirring bin are arranged aiming at the structure, wherein the first scraper blade and the second scraper blade can scrape off the slurry adhered on the side wall, so that the slurry is prevented from adhering to the wall, and the slurry can be ensured to be uniformly mixed; the upper stirring mechanism comprises a plurality of spiral belts with different diameters and nested arrangement, so that the stirring area is larger, the stirring dead angle is avoided, and the stirring uniformity is improved; the puddler can stir the thick liquids of cone section part, avoids being located the sludge deposit of below and mixes the inequality. After the sludge is treated by the system, impurities such as sand and stone can be effectively removed, and the mixture is more uniform.

(2) The upper stirring mechanism of the utility model also comprises a flexible stirring component and a dynamic stirring component, wherein, the flexible stirring component adopts chains which are staggered horizontally and vertically, the chains can form a stirring rod with similar rigidity when the rotating shaft rotates at high speed under the action of centrifugal force, the chains are small under the action of centrifugal force when the rotating shaft rotates at low speed, and the chains keep a flexible state, so that the chains form a changeable stirring structure, the stirring angle is more complex, the turbulence degree is increased, and the stirring uniformity is facilitated; the dynamic stirring subassembly includes the fixed axle and rotates the stirring vane who sets up on the fixed axle, and at the stirring in-process, thick liquids can produce the resistance to stirring vane, and this resistance also is stirring vane pivoted power for stirring vane is in constantly rotating state always, has further improved the homogeneity of stirring.

(3) Lower rabbling mechanism still including fixed helical blade who sets up in the pivot lower part, helical blade further improves the stirring homogeneity to the mud of below, mutually supports with the puddler simultaneously, avoids stirring the dead angle.

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 structural view of a blending system for continuous thermal hydrolysis of sludge according to an embodiment of the present invention;

FIG. 2 is a partial cutaway view of a blending system for continuous sludge pyrohydrolysis according to an embodiment of the present invention;

FIG. 3 is an internal structural view of a blending system for continuous thermal hydrolysis of sludge according to an embodiment of the present invention;

FIG. 4 is a sectional view taken along line A-A of a blending system for continuous thermal hydrolysis of sludge according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an agitator according to an embodiment of the present invention.

Description of reference numerals:

1-a stirring bin; 2-a filtering bin; 3-a liquid inlet pipe; 4-a filter plate; 5-slurry outlet; 6-sandstone outlet; 7-slurry inlet; 8-water inlet pipe; 9-a rotating shaft; 10-a motor; 11-an upper stirring mechanism; 12-a lower stirring mechanism; 13-sludge outlet; 14-a support bar; 15-a first scraper; 16-a chain; 17-a fixed shaft; 18-stirring blades; 19-helical band; 20-a stirring rod; 21-a second scraper; 22-helical blades; 23-connecting rod.

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.

FIG. 1 is a schematic structural view of a blending system for continuous thermal hydrolysis of sludge according to an embodiment of the present invention; FIG. 2 is a partial cutaway view of a blending system for continuous sludge pyrohydrolysis according to an embodiment of the present invention; FIG. 3 is an internal structural view of a blending system for continuous thermal hydrolysis of sludge according to an embodiment of the present invention; FIG. 4 is a sectional view taken along line A-A of a blending system for continuous thermal hydrolysis of sludge according to an embodiment of the present invention.

As shown in fig. 1-4, a blending system for continuous thermal hydrolysis of sludge comprises a stirring bin 1 and a filtering bin 2;

the filtering bins 2 are arranged and are uniformly distributed on the periphery of the stirring bin 1; the filter bin 2 comprises an upper cylindrical section and a lower conical section, a liquid inlet pipe 3 tangent to the cylindrical section is arranged on the side wall of the cylindrical section, a slurry outlet 5 is formed in the top of the cylindrical section, a filter plate 4 is arranged at the slurry outlet 5, a sand outlet 6 is formed in the bottom of the conical section, and a valve is arranged at the sand outlet 6;

the stirring bin 1 also comprises an upper cylindrical section and a lower conical section, the top of the stirring bin 1 is provided with a slurry inlet 7, and the slurry inlet 7 is connected with the slurry outlet 5 through a connecting pipe; the top of the stirring bin 1 is also connected with a water inlet pipe 8, the bottom of the stirring bin 1 is provided with a sludge outlet 13, and a valve is arranged at the sludge outlet 13; a stirrer is arranged in the stirring bin 1, the stirrer comprises a rotating shaft 9 and an upper stirring mechanism 11 and a lower stirring mechanism 12 which are sequentially arranged on the rotating shaft 9 from top to bottom, and the upper stirring mechanism 11 and the lower stirring mechanism 12 are respectively positioned in the cylindrical section and the conical section of the stirring bin 1;

the upper stirring mechanism 11 comprises a support rod 14, a first scraper 15 and a spiral belt 19, the support rod 14 is horizontally fixed at the upper part of the rotating shaft 9, the first scraper 15 is fixed at the end part of the support rod 14, and the first scraper 15 is attached to the side wall of the cylindrical section of the stirring bin 1; a plurality of spiral belts 19 with different diameters are arranged on the periphery of the rotating shaft 9, and the spiral belts 19 are sequentially arranged from inside to outside along the radial direction of the rotating shaft 9 from small to large in diameter;

lower rabbling mechanism includes puddler 20 and second scraper blade 21, and puddler 20 level is fixed on pivot 9, and second scraper blade 21 is fixed at the tip of puddler 20, and second scraper blade 21 and the laminating of the conical section lateral wall in stirring storehouse 1.

The blending system for the continuous thermal hydrolysis of sludge is provided with a stirring bin 1 and a plurality of filtering bins 2, the plurality of filtering bins 2 can simultaneously filter sludge from different sources or can simultaneously perform batch treatment on sludge from the same source, and the filtering efficiency of the sludge is improved. The filter bin 2 is provided with a tangential liquid inlet pipe 3, after sludge enters the filter bin under certain pressure, due to the tangential entering, the sludge can form rotational flow in the filter bin, sand and stone are removed by utilizing the principle of centrifugal separation, namely, the sludge is pushed downwards in a rotating manner, when the sludge reaches a certain part of a conical section, light sludge fluid in the sludge rotates to rotate upwards along the axis of the cylinder, and is filtered by a filter plate at a slurry outlet, and finally, the sludge is discharged from the slurry outlet; and the sand in the sludge falls along the wall surface of the cone under the action of the inertial centrifugal force of the fluid and the gravity of the sludge, so that the screening of the sand is completed. The stirring bin 1 is of an upper cylindrical section structure and a lower conical section structure, and an upper stirring mechanism 11 and a lower stirring mechanism 12 which accord with the structural characteristics of the stirring bin are arranged aiming at the structures, wherein the first scraper 15 and the second scraper 21 can scrape off the slurry adhered on the side wall, so that the slurry is prevented from adhering to the wall on one hand, and the slurry can be ensured to be uniformly mixed on the other hand; the upper stirring mechanism 11 comprises a plurality of spiral belts 19 which have different diameters and are arranged in an embedded mode, so that the stirring area is larger, the stirring dead angle is avoided, and the stirring uniformity is improved; puddler 20 can stir the thick liquids of circular cone section part, avoids being located the sludge sedimentation of below and mixes the inequality. After the sludge is treated by the system, impurities such as sand and stone can be effectively removed, and the mixture is more uniform.

Illustratively, as shown in fig. 5, the upper stirring mechanism 11 further includes a flexible stirring assembly, the flexible stirring assembly includes a plurality of horizontally and/or vertically arranged chains 16, and the flexible stirring assembly is disposed between the rotating shaft 9 and the first scraper 15.

Specifically, the flexible stirring assembly comprises a plurality of chains 16 which are horizontally and vertically arranged; the upper end of a vertically arranged chain 16 is hinged on the supporting rod 14, a connecting rod 23 is further fixedly arranged on the rotating shaft 9, and the lower end of the vertically arranged chain is hinged with the connecting rod 23; one end of a horizontally arranged chain 16 is hinged with the rotating shaft 9, and the other end is hinged with the first scraper 15.

Specifically, go up rabbling mechanism 11 and still include the dynamic stirring subassembly, the dynamic stirring subassembly includes fixed axle 17 and stirring vane 18, fixed axle 17 is fixed on pivot 9, stirring vane 18 rotates and sets up on fixed axle 17.

More specifically, the number of the support rods 14 is 4, and the support rods are arranged on the rotating shaft 9 in a cross shape; the flexible stirring assembly is provided with 2 groups, and is symmetrically arranged below 2 support rods 14; the dynamic stirring assembly is provided with 2 groups, and is symmetrically arranged below the other 2 support rods 14, so that the flexible stirring assembly and the dynamic stirring assembly are alternately arranged at intervals.

The upper stirring mechanism 11 further comprises a flexible stirring assembly and a dynamic stirring assembly, wherein the flexible stirring assembly adopts chains 16 which are staggered transversely and vertically, the chains 16 can form a rigid stirring structure under the action of centrifugal force when the rotating shaft rotates at a high speed, the chains 16 are small in centrifugal force when the rotating shaft rotates at a low speed, and the chains can keep a flexible state, so that the chains form a variable stirring structure, the stirring angle is more complex, the turbulence degree is increased, and the stirring uniformity is facilitated; the dynamic stirring assembly comprises a fixed shaft 17 and a stirring blade 18 rotatably arranged on the fixed shaft 17, and in the stirring process, slurry can generate resistance to the stirring blade 18, and the resistance is also the power for rotating the stirring blade 18, so that the stirring blade 18 is always in a continuous rotating state, and the stirring uniformity is further improved.

Illustratively, as shown in fig. 5, the lower stirring mechanism 12 further includes a helical blade 22 fixedly disposed at a lower portion of the rotating shaft 9.

Specifically, the diameter of the helical blade 22 gradually decreases from top to bottom.

The helical blade 22 further improves the stirring uniformity of the sludge below, and simultaneously is matched with the stirring rod 20 to avoid stirring dead angles.

Illustratively, the agitator is driven by a motor 10 disposed outside the mixing bin 1.

Illustratively, the filter plate 4 has an inverted cone-shaped structure.

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. A blending system for continuous thermal hydrolysis of sludge is characterized in that: comprises a stirring bin (1) and a filtering bin (2);

the filtering bins (2) are provided with a plurality of filtering bins and are uniformly distributed on the periphery of the stirring bin (1); the filter bin (2) comprises an upper cylindrical section and a lower conical section, a liquid inlet pipe (3) tangent to the cylindrical section is arranged on the side wall of the cylindrical section, a slurry outlet (5) is formed in the top of the cylindrical section, a filter plate (4) is arranged at the slurry outlet (5), and a sand outlet (6) is formed in the bottom of the conical section;

the stirring bin (1) also comprises an upper cylindrical section and a lower conical section, the top of the stirring bin (1) is provided with a slurry inlet (7), and the slurry inlet (7) is connected with the slurry outlet (5) through a connecting pipe; the top of the stirring bin (1) is also connected with a water inlet pipe (8), and the bottom of the stirring bin (1) is provided with a sludge outlet (13); a stirrer is arranged in the stirring bin (1), the stirrer comprises a rotating shaft (9) and an upper stirring mechanism (11) and a lower stirring mechanism (12) which are sequentially arranged on the rotating shaft (9) from top to bottom, and the upper stirring mechanism (11) and the lower stirring mechanism (12) are respectively positioned in the cylindrical section and the conical section of the stirring bin (1);

the upper stirring mechanism (11) comprises a support rod (14), a first scraper (15) and a spiral belt (19), the support rod (14) is horizontally fixed at the upper part of the rotating shaft (9), the first scraper (15) is fixed at the end part of the support rod (14), and the first scraper (15) is attached to the side wall of the cylindrical section of the stirring bin (1); the periphery of the rotating shaft (9) is provided with a plurality of spiral belts (19) with different diameters, and the spiral belts (19) are sequentially arranged from inside to outside along the radial direction of the rotating shaft (9) from small to large according to the diameters;

lower rabbling mechanism includes puddler (20) and second scraper blade (21), and puddler (20) level is fixed on pivot (9), and the tip at puddler (20) is fixed in second scraper blade (21), and second scraper blade (21) and the laminating of the conical section lateral wall in stirring storehouse (1) mutually.

2. The blending system for continuous thermal hydrolysis of sludge according to claim 1, wherein: go up rabbling mechanism (11) still include flexible stirring subassembly, flexible stirring subassembly includes a plurality of levels and/or vertical chain (16) that set up, flexible stirring subassembly sets up between pivot (9) and first scraper blade (15).

3. The blending system for continuous thermal hydrolysis of sludge according to claim 2, wherein: the flexible stirring component comprises a plurality of chains (16) which are horizontally and vertically arranged; the upper end of a vertically arranged chain (16) is hinged to the supporting rod (14), a connecting rod (23) is further fixedly arranged on the rotating shaft (9), and the lower end of the vertically arranged chain is hinged to the connecting rod (23); one end of a horizontally arranged chain (16) is hinged with the rotating shaft (9), and the other end is hinged with the first scraper (15).

4. The blending system for continuous thermal hydrolysis of sludge according to claim 3, wherein: go up rabbling mechanism (11) still include dynamic stirring subassembly, dynamic stirring subassembly includes fixed axle (17) and stirring vane (18), fixed axle (17) are fixed on pivot (9), stirring vane (18) rotate and set up on fixed axle (17).

5. The blending system for continuous thermal hydrolysis of sludge according to claim 4, wherein: the number of the support rods (14) is 4, and the support rods are arranged on the rotating shaft (9) in a cross shape; the flexible stirring assembly is provided with 2 groups which are symmetrically arranged below 2 support rods (14) in the flexible stirring assembly; the dynamic stirring assembly is provided with 2 groups, and the dynamic stirring assembly is symmetrically arranged below the other 2 support rods (14), so that the flexible stirring assembly and the dynamic stirring assembly are alternately arranged at intervals.

6. The blending system for continuous thermal hydrolysis of sludge according to claim 1, wherein: the lower stirring mechanism (12) also comprises a helical blade (22) fixedly arranged at the lower part of the rotating shaft (9).

7. The blending system for continuous thermal hydrolysis of sludge according to claim 6, wherein: the diameter of the helical blade (22) is gradually reduced from top to bottom.

8. The blending system for continuous thermal hydrolysis of sludge according to claim 1, wherein: the stirrer is driven by a motor (10) arranged outside the stirring bin (1).

9. The blending system for continuous thermal hydrolysis of sludge according to claim 1, wherein: the filter plate (4) is of an inverted cone structure.