CN219991408U

CN219991408U - Sludge drying equipment

Info

Publication number: CN219991408U
Application number: CN202223534567.6U
Authority: CN
Inventors: 王云飞; 胡德杰; 胡德萍; 胡德恒
Original assignee: Shanghai Liangyan Environmental Protection Technology Development Co ltd
Current assignee: Shanghai Liangyan Environmental Protection Technology Development Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-11-10
Anticipated expiration: 2032-12-28

Abstract

The present utility model provides a sludge drying apparatus comprising: the inner cylinder is internally provided with a rotating shaft along the length direction of the inner cylinder, the rotating shaft is provided with spiral blades, mud sweeping plates are fixedly arranged among the spiral blades, the rotating shaft is connected with a motor through gear rotation, and the outer wall of the rotating shaft is provided with a plurality of shoveling plates; the middle cylinder is concentrically sleeved outside the inner cylinder, a plurality of crushing poking sheets are arranged inside the inner cylinder, a drying cavity is arranged between the middle cylinder and the inner cylinder, and a plurality of baffle plates are arranged in the drying cavity; the outer cylinder is concentrically sleeved outside the middle cylinder, and a heat preservation layer is arranged between the outer cylinder and the middle cylinder. According to the sludge drying equipment, the inner cylinder, the middle cylinder, the outer cylinder and the heat insulation layer are arranged, so that the drying effect of sludge is good, the drying efficiency of sludge is improved, the treatment capacity is increased, and the energy consumption is reduced.

Description

Sludge drying equipment

Technical Field

The utility model relates to the technical field of sludge treatment, in particular to sludge drying equipment.

Background

Along with the rapid development of the economy in China, the steps of urban and urban construction are continuously accelerated, the sewage discharge amount brought by industry and life is increased, and the sludge amount is increased. If not treated in time, the influence on the environment is serious, so that the sludge is required to be treated and dried.

Patent CN201721219838.5 discloses a sludge drier system, which comprises a sludge drier and a host machine for providing air flow for drying sludge for the sludge drier, wherein the sludge drier and the host machine form a closed sludge drying environment, and the process of drying sludge in the closed sludge drier is realized by matching with an extrusion molding part of sludge and a sludge overturning drying process. Patent CN205919635U discloses a direct heating dryer, which comprises a rotary drying furnace, a feeding mechanism, a hot air generating furnace and a stirring device. When the sludge to be dried enters through the feeding mechanism, the sludge contacts with heat generated in the hot air generating furnace to realize preliminary dehydration and drying, then the sludge is dried again in the rotary drying furnace, and finally the sludge is dried. In the method, the flue gas or air for heating needs to be in direct contact with the sludge, and the equipment has large volume and occupation area, the tail gas contains pollutants, the purification cost is high, and the energy consumption is high; in addition, for the sludge with high viscosity or in a block shape, the dispersion is difficult, the sludge with high viscosity can be stuck to the cylinder wall, and the drying of the block-shaped sludge is incomplete, so that the drying effect is poor.

Accordingly, the present utility model is directed to a sludge drying apparatus to solve the above-mentioned problems of the prior art.

Disclosure of Invention

The present utility model addresses the above-described shortcomings of the prior art by providing a sludge drying apparatus.

The utility model adopts the following technical scheme for solving the technical problems:

provided is a sludge drying apparatus including:

the inner cylinder is internally provided with a rotating shaft along the length direction of the inner cylinder, the rotating shaft is provided with spiral blades, mud sweeping plates are fixedly arranged among the spiral blades, the rotating shaft is connected with a motor through gear rotation, and the outer wall of the rotating shaft is provided with a plurality of shoveling plates;

the middle cylinder is concentrically sleeved outside the inner cylinder, a plurality of crushing poking sheets are arranged inside the inner cylinder, a drying cavity is arranged between the middle cylinder and the inner cylinder, and a plurality of baffle plates are arranged in the drying cavity;

the outer cylinder is concentrically sleeved outside the middle cylinder, and a heat preservation layer is arranged between the outer cylinder and the middle cylinder.

Further, the shoveling plate includes:

the reinforcing ribs are perpendicular to the outer wall of the rotating shaft;

and the paper making hand is arranged at one end, far away from the hollow rotating shaft, of the reinforcing rib and extends towards the inner wall of the inner cylinder.

Further, the plurality of the shoveling plates are distributed at intervals along the length direction and the peripheral direction of the hollow rotating shaft.

Further, the two ends of the inner cylinder are rotatably connected with a connecting cylinder through bearings, and sealing rings are fixedly arranged on the outer side of the connecting cylinder.

Further, a plurality of baffles are staggered along the inner wall of the drying chamber.

Further, a plurality of crushing plectrum along circumference staggered arrangement in the internal surface of inner tube.

Further, a sludge inlet, a dried sludge outlet and a water outlet are arranged on the inner cylinder.

Further, a flue gas inlet and a flue gas outlet are formed in the bottom of the middle cylinder, and the flue gas inlet and the flue gas outlet are communicated with the drying cavity.

Further, a supporting seat is fixedly arranged at the bottom of the outer cylinder.

Compared with the prior art, the utility model has the following technical advantages:

according to the sludge drying equipment, the inner cylinder, the middle cylinder, the outer cylinder and the heat insulation layer are arranged, so that the drying effect of sludge is good, the drying efficiency of sludge is improved, the treatment capacity is increased, and the energy consumption is reduced.

Drawings

FIG. 1 is a schematic view showing the internal structure of a sludge drying apparatus according to the present utility model;

FIG. 2 is a schematic structural view of an inner cylinder in the sludge drying apparatus of the present utility model;

wherein the reference numerals are as follows:

an outer cylinder 1; a middle cylinder 2; an inner cylinder 3; a rotation shaft 4; a helical blade 5; a connecting cylinder 6; a motor 7; a mud sweeping plate 8; a reinforcing rib 9; a handle 10; a drying chamber 11; a baffle 12; a seal ring 13; crushing the pulling piece 14; a sludge inlet 15; a flue gas inlet 16; a water outlet 17; a drain opening 18; a dry sludge outlet 19; and a support base 20.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-2, the present embodiment provides a sludge drying apparatus, comprising:

the sludge dryer comprises an inner cylinder 3, wherein a rotating shaft 4 is arranged in the inner cylinder 3 along the length direction of the inner cylinder, a spiral blade 5 is arranged on the rotating shaft 4, a mud sweeping plate 8 is fixedly arranged between the spiral blades 5, and when sludge enters an inner cavity of the inner cylinder 3, the mud sweeping plate 8 sweeps up the sludge and rotates along with the spiral blade 5, so that the sludge can also self-transfer under the action of friction force of the inner cylinder 4 and the outer cylinder 1 when the sludge rotates along with the spiral blade 5, and the sludge is dried more comprehensively;

the rotary shaft 4 is rotationally connected with a motor 7 through a gear, a plurality of shoveling plates are arranged on the outer wall of the rotary shaft 4, the shoveling plates are distributed at intervals along the length direction and the peripheral direction of the hollow rotary shaft 4, sludge is propelled under the drive of the spiral blades 5, and meanwhile, the shoveling plates arranged on the rotary shaft 4 can roll the sludge, so that the sludge can be prevented from being adhered to the inner cylinder wall, the heat transfer enhancement effect is achieved, and the sludge drying efficiency can be improved;

the middle cylinder 2 is concentrically sleeved outside the inner cylinder 3, a plurality of crushing paddles 14 are arranged inside the inner cylinder 3, the crushing paddles 14 are circumferentially staggered on the inner surface of the inner cylinder 3, and the crushing paddles 16 can crush and refine massive sludge so that the sludge is dried more fully; a drying cavity 11 is arranged between the middle cylinder 2 and the inner cylinder 3, a plurality of baffle plates 12 are arranged in the drying cavity 11, the baffle plates 12 are staggered along the inner wall of the drying cavity 11, the baffle plates 11 can improve the residence time of the flue gas in the drying cavity 11, and meanwhile, the purpose of turbulence of the flue gas in the drying cavity 11 can be achieved, so that the turbulent flow is achieved, and the drying efficiency is improved;

wherein, the single baffle plates 12 are arranged at intervals along the circumferential direction of the drying cavity 11, a plurality of baffle plates 12 are distributed at intervals in the drying cavity 11 along the length direction of the inner cylinder 2, one of the two adjacent baffle plates 12 is arranged on the outer wall of the inner cylinder 2, the other baffle plate is arranged on the inner wall of the middle cylinder 2, and the baffle plates 12 form an S-shaped passage, so that turbulent flow is generated to the flue gas, thereby achieving the purpose of turbulent flow and improving the heat energy utilization efficiency of the flue gas;

the outer cylinder 1, the concentric cover of outer cylinder 1 is established outside the well section of thick bamboo 2 just be equipped with the heat preservation between outer cylinder 1 and the well section of thick bamboo 2, the heat preservation can avoid the loss of the interior flue gas heat of drying chamber 11, and wherein the heat preservation can be any material that can keep warm in the prior art.

In this embodiment, no mud-sweeping plate 8 is installed between the helical blades 6 in the sludge inlet 15, and preferably, one mud-sweeping plate 8 is provided between every two adjacent helical blades 6.

In this embodiment, the shoveling plate includes: a reinforcing rib 9, wherein the reinforcing rib 9 is perpendicular to the outer wall of the rotating shaft 4; the paper making hand 10, paper making hand 10 is arranged on one end of the reinforcing rib 9 far away from the rotating shaft 4 and extends towards the inner wall of the inner cylinder 3 to pass through the paper making plate, so that on one hand, the adhesion of sludge on the wall of the inner cylinder 3 can be avoided, and on the other hand, the heat transfer enhancement effect is achieved, and the sludge drying efficiency can be improved.

In this embodiment, the two ends of the inner cylinder 3 are rotatably connected with a connecting cylinder 6 through bearings, and a sealing ring 13 is fixedly installed on the outer side of the connecting cylinder 6.

In this embodiment, the inner cylinder 3 is provided with a sludge inlet 15, a dried sludge outlet 19 and a water outlet 18; a flue gas inlet 16 and a flue gas outlet 17 are arranged on the middle cylinder 2, and the flue gas inlet 16 and the flue gas outlet 17 are communicated with the drying cavity 11; the bottom of the outer cylinder 1 is fixedly provided with a supporting seat 20.

According to the sludge drying equipment, the crushing stirring piece 16 is arranged on the inner surface of the inner cylinder 3, so that massive sludge can be crushed and refined, meanwhile, the spiral blade 6 and the shoveling plate are arranged on the rotating shaft 4, the spiral blade 6 can push the sludge to move forward along with the rotation of the rotating shaft 4, the shoveling plate can roll the sludge, on one hand, the sludge can be prevented from being bonded on the wall of the inner cylinder 3, on the other hand, the effect of enhancing heat transfer can be achieved, and in addition, the mud sweeping plate 8 is arranged on the spiral blade, and can sweep the sludge up and rotate along with the spiral blade 5, so that the sludge can also be self-conveyed under the action of friction force of the inner cylinder 4 and the outer cylinder 1 when the spiral blade 5 rotates, and the sludge can be dried more comprehensively; the baffle plate 12 is arranged in the drying cavity 11 arranged between the middle cylinder 2 and the inner cylinder 3, so that the residence time of the flue gas in the drying cavity 11 can be prolonged by the baffle plate 12, and meanwhile, the purpose of turbulence of the flue gas in the drying cavity 11 can be realized, and the drying efficiency is improved; by arranging an insulating layer between the outer cylinder 1 and the middle cylinder 2, the heat dissipation of the flue gas in the drying chamber 11 can be avoided.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.

Claims

1. A sludge drying apparatus, comprising:

the novel mud-sweeping device comprises an inner cylinder (3), wherein a rotating shaft (4) is arranged in the inner cylinder (3) along the length direction of the inner cylinder, spiral blades (5) are arranged on the rotating shaft (4), mud-sweeping plates (8) are fixedly arranged between the spiral blades (5), the rotating shaft (4) is connected with a motor (7) through gear rotation, and a plurality of shoveling plates are arranged on the outer wall of the rotating shaft (4);

the middle cylinder (2) is concentrically sleeved outside the inner cylinder (3), a plurality of crushing poking sheets (14) are arranged inside the inner cylinder (3), a drying cavity (11) is arranged between the middle cylinder (2) and the inner cylinder (3), and a plurality of baffle plates (12) are arranged in the drying cavity (11);

the outer cylinder (1) is concentrically sleeved outside the middle cylinder (2), and a heat preservation layer is arranged between the outer cylinder (1) and the middle cylinder (2).

2. The sludge drying apparatus of claim 1 wherein the shoveling plate comprises:

a reinforcing rib (9), wherein the reinforcing rib (9) is perpendicular to the outer wall of the rotating shaft (4);

and the paper making hand (10) is arranged at one end, far away from the rotating shaft (4), of the reinforcing rib (9) and extends towards the inner wall of the inner cylinder (3).

3. The sludge drying apparatus as claimed in claim 2, wherein a plurality of the shoveling plates are arranged at intervals along a longitudinal direction and an outer circumferential direction of the rotary shaft (4).

4. Sludge drying equipment according to claim 1, characterized in that the two ends of the inner cylinder (3) are rotatably connected with a connecting cylinder (6) through bearings, and the outer side of the connecting cylinder (6) is fixedly provided with a sealing ring (13).

5. Sludge drying apparatus according to claim 1, characterized in that a plurality of said baffles (12) are staggered along the inner wall of said drying chamber (11).

6. Sludge drying apparatus according to claim 1, characterized in that a plurality of said crushing paddles (14) are staggered circumferentially on the inner surface of said inner cylinder (3).

7. Sludge drying apparatus according to claim 1, characterized in that the inner cylinder (3) is provided with a sludge inlet (15), a dried sludge outlet (19) and a water outlet (18).

8. Sludge drying apparatus according to claim 1, characterized in that the intermediate drum (2) is provided with a flue gas inlet (16) and a flue gas outlet (17), the flue gas inlet (16) and the flue gas outlet (17) being in communication with the drying chamber (11).

9. Sludge drying apparatus according to claim 1, characterized in that the bottom of the outer cylinder (1) is fixedly fitted with a support seat (20).