CN217127256U

CN217127256U - Sludge atomization device

Info

Publication number: CN217127256U
Application number: CN202220735867.1U
Authority: CN
Inventors: 李煜; 李俊; 丁堂文; 彭泽均; 何卫东; 唐文萍; 陈念
Original assignee: Chongqing Sanfeng Covanta Environmental Industry Co ltd
Current assignee: Chongqing Sanfeng Covanta Environmental Industry Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-08-05
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to a sludge atomization device, which comprises a gas phase conveying pipe and a solid phase conveying pipe which are coaxially arranged, wherein the output end of the solid phase conveying pipe extends into the gas phase conveying pipe, the tail part of the gas phase conveying pipe is sealed by a sealing plate, the tail part of the gas phase conveying pipe is provided with a side pipe, the output end of the gas phase conveying pipe is fixedly connected with an outer spray head, the output end of the solid phase conveying pipe is fixedly connected with an inner spray head, the outer diameter of the solid phase conveying pipe is smaller than the inner diameter of the gas phase conveying pipe, a first air channel is formed between the outer diameter of the solid phase conveying pipe and the inner diameter of the gas phase conveying pipe, a wind distribution ring is sleeved on the solid phase conveying pipe at the rear part of the inner spray head, the middle part and the tail part of the inner spray head are of a step structure, the outer diameter of the tail part is smaller than the outer diameter of the middle part, a second air channel is formed between the tail part and the gas phase conveying pipe, the wind distribution ring is used for communicating the first air channel with the first atomization chamber, the inner spray head is provided with an oblique air hole, the oblique ventilation hole communicates the second air duct with the first atomization chamber. The utility model discloses atomization effect is good, and is efficient.

Description

Sludge atomization device

Technical Field

The utility model belongs to the technical field of the sludge drying, a sludge atomization device is related to.

Background

With the acceleration of the urbanization process and the continuous improvement of the living standard of people, the sewage treatment capacity is increased sharply, sludge is a byproduct of sewage treatment, and the yield is increased. At present, the ecological environment protection is promoted to the unprecedented strategic height by the country, the original modes of treating sludge by simple treatment and then outward transport and landfill, or simple composting and the like are completely not suitable for the requirements of ecological civilization construction in China, the sludge is properly treated and treated by the environmental protection department and brought into the emission reduction assessment of the total amount of sewage, the policy is changed from 'heavy water light sludge' to 'heavy water sludge', and the recycling and harmless process of the sludge treatment is driven.

The sludge has high water content and low heat value, contains a large amount of complex harmful components such as viruses, pathogens, microorganisms, heavy metals and the like, and needs to be subjected to stabilization, reduction and harmless treatment.

The sludge drying and incineration technology is a technology for reducing the water content of sludge to a certain degree to reach a certain calorific value and then carrying out incineration treatment, so that the sludge drying and incineration technology is divided into two stages of drying and incineration. The existing drying technology adopts two modes of direct drying, indirect drying and the like, wherein the direct drying mode is mainly to introduce high-temperature flue gas into sludge to evaporate water, such as a rotary drum drying technology, a belt drying technology, a fluidized bed drying technology and the like; indirect drying is mainly characterized in that the sludge attached to the other surface of the metal cavity is evaporated by heating the metal cavity through steam or heat conduction oil, such as paddle type drying technology, disc type drying technology and the like. Both of these approaches have common features: small treatment scale, high cost, high equipment failure rate, multiple auxiliary facilities and the like, thereby restricting the wide application of the sludge drying technology.

Considering that the direct drying efficiency is highest, if the sludge is atomized into fine particles to be directly sprayed into the high-temperature flue gas, the sludge with small particle size and the high-temperature flue gas directly exchange heat to be rapidly dried, the mode is direct, the required equipment is few, but the key equipment is a device capable of atomizing the sludge into small particle size. Considering that the sludge has high viscosity, strong corrosivity and poor fluidity, the sludge needs to be refined into small particles with certain diameters (the particle size is less than or equal to 500um), and the atomization device needs a special structure to meet the requirement of sludge atomization.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a can solve the mud atomizing device of above-mentioned problem.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a sludge atomization device comprises a gas phase conveying pipe and a solid phase conveying pipe which are coaxially arranged, wherein the output end of the solid phase conveying pipe extends into the gas phase conveying pipe, the output end of the solid phase conveying pipe extends to the output end close to the gas phase conveying pipe, the tail part of the gas phase conveying pipe is tightly sealed by a sealing plate, an integrated side pipe is arranged at the tail part of the gas phase conveying pipe, an outer spray head is fixedly connected to the output end of the gas phase conveying pipe, an inner spray head is fixedly connected to the output end of the solid phase conveying pipe, the inner spray head is arranged in a cavity of the outer spray head, the outer diameter of the solid phase conveying pipe is smaller than the inner diameter of the gas phase conveying pipe, a first air channel is formed by a gap between the inner spray head and the gas phase conveying pipe, an air distribution ring is sleeved on the solid phase conveying pipe at the rear part of the inner spray head, a plurality of air holes are formed around the center line of the air distribution ring, the middle part and the tail part of the inner spray head are of a step structure, the outer diameter of the tail part is smaller than the outer diameter of the middle part, a second air channel is formed between the tail part and the gas phase conveying pipe, the air distribution ring is used for communicating the first air channel with the second air channel, the inner part of the inner spray head is provided with a first atomizing chamber, the inner spray head is provided with an oblique air hole, and the oblique air hole is used for communicating the second air channel with the first atomizing chamber.

Furthermore, the middle part and the tail part are in transition through an inclined shoulder, a plurality of radiation plates are uniformly distributed on the outer circumference of the tail part at intervals around the outer circumference, inclined vent holes are formed in the shoulder between the radiation plates, and the inclined vent holes correspond to the vent holes of the air distribution ring.

Further, the outer diameter of the radiation plate is the same as that of the middle part, and the length of the radiation plate is equal to that of the tail part.

Furthermore, the inclined vent holes are uniformly distributed around the central line of the inner spray head at intervals, and the central lines of all the inclined vent holes are converged at one point on the central line of the inner spray head, so that the method is not limited to the access mode.

Furthermore, a space is reserved between the outer spray head and the inner spray head and is a second atomization chamber, an annular gap is reserved between the inner spray head and the outer spray head as well as between the inner spray head and the gas phase conveying pipe, a third air channel is formed in the annular gap, and the second air channel is communicated with the second atomization chamber through the third air channel.

Furthermore, an outer nozzle wear-resisting ring is fixed at the outlet of the outer nozzle for keeping the wear-resisting property.

Furthermore, a plurality of rotating pieces are fixedly arranged in the outer nozzle at the rear part of the wear-resisting ring of the outer nozzle, and the rear end face of each rotating piece is abutted against the front end of the inner nozzle.

Furthermore, the end part of the nozzle of the inner spray head is provided with an inner spray head wear-resisting ring.

Further, the outer diameter of the air distribution ring is the same as the inner diameter of the gas phase conveying pipe.

Furthermore, the side pipe is perpendicular to the gas phase conveying pipe, and is not limited to the inlet mode.

The beneficial effects of the utility model reside in that:

the utility model discloses be provided with first atomizer chamber and second atomizer chamber, the mud that the water content is high is broken up at first atomizer chamber, then forms the vortex under the whirlwind of second atomizer chamber, and air and mud mix once more, then from outer shower nozzle export blowout, atomize into tiny granule and directly spout into the high temperature flue gas, then directly exchange the heat with the high temperature flue gas and by rapid mummification, the utility model discloses an atomization effect is good, and production efficiency is high.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic structural view of the air distribution ring of the present invention;

fig. 4 is a sectional view of the wind distribution ring of the present invention;

fig. 5 is a schematic structural view of the inner nozzle of the present invention;

fig. 6 is a cross-sectional view of the inner nozzle of the present invention;

fig. 7 is a schematic structural view of the outer nozzle of the present invention;

fig. 8 is a sectional view of the outer nozzle of the present invention.

Reference numerals:

1. a gas phase delivery pipe; 2. a solid phase delivery pipe; 3. a wind distribution ring; 4. an inner spray head; 41. a nozzle; 42. a middle part; 421. an oblique vent hole; 43. a tail portion; 431. a radiation plate; 5. a first atomization chamber; 6. an inner nozzle wear-resistant ring; 7. an outer nozzle; 8. a rotating sheet; 9. a second atomization chamber; 10. an outer nozzle wear ring; 11. a side tube; 12. and (7) closing the plate.

a. A first air duct; b. a second air duct; c. and a third air duct.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

As shown in the figure, for a sludge atomization device, including gas phase conveyer pipe 1 and the solid phase conveyer pipe 2 that set up with the axle center, the output of solid phase conveyer pipe 2 stretches into gas phase conveyer pipe 1's inside, and solid phase conveyer pipe 2's output extends to the output that is close to gas phase conveyer pipe 1, and gas phase conveyer pipe 1's afterbody 43 is sealed with shrouding 12 and is fastened. The output end of the gas phase conveying pipe 1 is screwed with an external spray head 7 through threads. The output end of the solid phase conveying pipe 2 is screwed with an inner spray head 4 through threads. The inner spray head 4 is placed in the cavity of the outer spray head 7. The tail 43 of the gas phase transport pipe 1 is provided with an integrated side pipe 11, and the side pipe 11 is perpendicular to the gas phase transport pipe 1.

The outer diameter of the solid phase conveying pipe 2 is smaller than the inner diameter of the gas phase conveying pipe 1, and a first air channel a is formed by a gap between the solid phase conveying pipe and the gas phase conveying pipe. The solid phase conveying pipe 2 at the rear part of the inner spray head 4 is sleeved with the air distribution ring 3, the outer diameter of the air distribution ring 3 is the same as the inner diameter of the gas phase conveying pipe 1, and the air distribution ring 3 plays a role of supporting between the gas phase conveying pipe 1 and the solid phase conveying pipe 2, so that the front ends of the gas phase conveying pipe 1 and the solid phase conveying pipe 2 are concentric. Thus, the front and back ends of the gas phase conveying pipe 1 and the solid phase conveying pipe 2 are provided with fixing parts which keep concentric.

The air distribution ring 3 is provided with a plurality of strip-shaped vent holes around the central line of the air distribution ring, the air speed and the air inlet position of compressed air are adjusted by controlling the area sum of the vent holes, and the flow speed of the compressed air in an air path can reach 200-300 m/s after passing through the vent holes.

The inner spray head 4 is hollow, the inner spray head 4 is provided with a spray nozzle 41, a middle part 42 and a tail part 43 from front to back, the spray nozzle 41 is in a cone structure, the outer diameter of the middle part 42 is larger than that of the tail part 43, and the outer diameter of the middle part 42 is smaller than the inner diameter of the gas phase conveying pipe 1. The inner diameter of the tail part 43 is provided with an internal thread matched with the external thread of the outer wall of the solid phase conveying pipe 2, the outer end of the tail part 43 is propped against the front side wall of the air distribution ring 3, and a second air channel b is formed between the tail part 43 and the gas phase conveying pipe 1. The air distribution ring 3 is used for communicating the first air duct a with the second air duct b.

The middle part 42 and the tail part 43 are crossed through a slope shoulder, a plurality of radiation plates 431 are uniformly distributed on the outer circumference of the tail part 43 at intervals around the outer circumference, the outer diameter of each radiation plate 431 is the same as that of the middle part 42, and the length of each radiation plate 431 is equal to that of the tail part 43. An inclined vent hole 421 is opened on the shoulder between the radiation plate 431 and the radiation plate 431, and the inclined vent hole 421 corresponds to the vent hole of the air distribution ring 3. The inclined vent holes 421 are uniformly distributed around the center line of the inner nozzle 4 at intervals, the center lines of all the inclined vent holes 421 are converged at one point on the center line of the inner nozzle 4, and the second air duct b is communicated with the inside of the inner nozzle 4 through the inclined vent holes 421, so that the first atomizing chamber 5 is formed inside the inner nozzle 4.

A space is left between the outer spray head 7 and the inner spray head 4, the space is a second atomizing chamber 9, and the rear end of the outer spray head 7 is fixed on the output end of the gas phase conveying pipe 1. An annular gap is reserved between the nozzle 41 and the middle part 42 of the inner spray head 4, the outer spray head 7 and the gas phase conveying pipe 1, a third air duct c is formed in the annular gap, and the second air duct b is communicated with the second atomizing chamber 9 through the third air duct c.

An inner nozzle wear-resisting ring 6 is installed at the end part of a nozzle 41 of the inner nozzle 4, the inner nozzle wear-resisting ring 6 is a frustum-shaped cylinder, and the inner nozzle wear-resisting ring 6 is sleeved inside the front end of the inner nozzle 4 in an interference fit mode, is integrated with the inner nozzle 4 and serves as a sludge outlet of the first atomizing chamber 5.

An outer nozzle wear-resisting ring 10 is arranged at the outlet of the outer nozzle 7 for keeping wear-resisting property, and the outer nozzle wear-resisting ring 10 is arranged at the outlet of the outer nozzle 7 in an interference fit manner. The inner diameter of the through hole at the outlet of the outer spray head 7 is designed according to the spraying capacity, so that the sludge can pass through the through hole without being blocked. A plurality of rotating pieces 8 are fixedly arranged in the outer nozzle 7 at the rear part of the outer nozzle wear-resisting ring 10, and the rear end surface of each rotating piece 8 is tightly abutted with the top end of the nozzle 41 of the inner nozzle 4.

The utility model discloses the theory of operation of creation:

the gas phase conveying pipe 1 is used as a compressed air conveying channel to assist solid phase atomization. The delivered compressed air enters the gas phase delivery pipe 1 through the 90-degree side pipe 11, the tail part 43 of the gas phase delivery pipe 1 is blocked by the closing plate 12, and the compressed air can be only delivered from the front part of the gas phase delivery pipe 1. The solid phase conveying pipe 2 is used as a sludge conveying channel with the water content of 80 percent. The compressed air in the gas phase conveying pipe 1 has another function of protecting the inner solid phase conveying pipe 2 as cooling gas, and prevents the solid phase conveying pipe 2 from being blocked due to dehydration and hardening of sludge on the inner wall of the solid phase conveying pipe 2 in a high-temperature environment.

The compressed air firstly enters the first air channel a through the side pipe 11, and then enters the second air channel b after passing through the vent hole of the air distribution ring 3 from the first air channel a, the compressed air can form two compressed air streams through the inclined vent hole 421 and the third air channel c on the shoulder after entering the second air channel b, the first compressed air stream is the most compressed air, the first compressed air stream is flushed into the first atomization chamber 5 through the inclined vent hole 421, and the second compressed air stream enters the second atomization chamber 9 through the third air channel c.

The first stream of compressed air and the sludge are mixed for the first time in the first atomizing chamber 5, the first stream of compressed air is flushed into the first atomizing chamber 5 to scatter the sludge, and the scattered sludge is extruded into the second atomizing chamber 9; the second strand of compressed air forms the high-speed whirlwind of round through the rotating vane 8 in the second atomizer chamber 9, with the high-speed rotatory mud in the second atomizer chamber 9 to spout through outer shower nozzle 7, thereby realize the little granule atomization effect of mud. The method has good atomization effect on the sludge with high viscosity and poor fluidity. The ratio of the air amount of the first atomization chamber 5 to the second atomization chamber 9 is approximately 0.75-1.

It should be further noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions, which should be covered by the scope of the claims of the present invention.

Claims

1. A sludge atomization device is characterized in that: comprises a gas phase conveying pipe (1) and a solid phase conveying pipe (2) which are coaxially arranged, the output end of the solid phase conveying pipe (2) extends into the gas phase conveying pipe (1), the output end of the solid phase conveying pipe (2) extends to the output end close to the gas phase conveying pipe (1), the tail part (43) of the gas phase conveying pipe (1) is tightly sealed and fastened by a sealing plate (12), the tail part (43) of the gas phase conveying pipe (1) is provided with an integrated side pipe (11), the output end of the gas phase conveying pipe (1) is fixedly connected with an outer spray head (7), the output end of the solid phase conveying pipe (2) is fixedly connected with an inner spray head (4), the inner spray head (4) is arranged in a cavity of the outer spray head (7), the outer diameter of the solid phase conveying pipe (2) is smaller than the inner diameter of the gas phase conveying pipe (1), a first air channel (a) is formed by the gap between the inner spray head (4), and an air distribution ring (3) is sleeved on the solid phase conveying pipe (2) at the rear part of the inner spray head (4), open around its central line on cloth wind ring (3) and have a plurality of ventilation holes, middle part (42) and afterbody (43) of interior shower nozzle (4) are stair structure, the external diameter of afterbody (43) is less than the external diameter of middle part (42), form second wind channel (b) between afterbody (43) and gaseous phase conveyer pipe (1), cloth wind ring (3) are linked together first wind channel (a) and second wind channel (b), the inside of interior shower nozzle (4) is first atomizer chamber (5), it has slant ventilation hole (421) to open on interior shower nozzle (4), slant ventilation hole (421) communicate second wind channel (b) and first atomizer chamber (5).

2. The sludge atomization device according to claim 1, wherein: the middle part (42) and the tail part (43) are in transition through an inclined shoulder, a plurality of radiation plates (431) are uniformly distributed on the outer circumference of the tail part (43) at intervals around the outer circumference, an inclined vent hole (421) is formed in the shoulder between the radiation plates (431) and the radiation plates (431), and the inclined vent hole (421) corresponds to the vent hole of the air distribution ring (3).

3. The sludge atomization device according to claim 2, characterized in that: the outer diameter of the radiation plate (431) is the same as that of the middle part (42), and the length of the radiation plate (431) is equal to that of the tail part (43).

4. The sludge atomization device according to claim 1, characterized in that: the inclined vent holes (421) are uniformly distributed at intervals around the center line of the inner spray head (4), and the center lines of all the inclined vent holes (421) are converged at one point on the center line of the inner spray head (4).

5. The sludge atomization device according to claim 1, characterized in that: a space is reserved between the outer spray head (7) and the inner spray head (4), the space is a second atomizing chamber (9), annular gaps are reserved between the inner spray head (4) and the outer spray head (7) as well as between the inner spray head (4) and the gas phase conveying pipe (1), the annular gaps form a third air duct (c), and the third air duct (c) enables the second air duct (b) to be communicated with the second atomizing chamber (9).

6. The sludge atomization device according to claim 1, characterized in that: an outer nozzle wear-resistant ring (10) is fixed at the outlet of the outer nozzle (7) for keeping the wear-resistant performance.

7. The sludge atomization device according to claim 6, wherein: a plurality of rotating pieces (8) are fixedly arranged in the outer nozzle (7) at the rear part of the outer nozzle wear-resisting ring (10), and the rear end face of each rotating piece (8) is abutted against the front end of the inner nozzle (4).

8. The sludge atomization device according to claim 1, characterized in that: the end part of the nozzle (41) of the inner nozzle (4) is provided with an inner nozzle wear-resisting ring (6).

9. The sludge atomization device according to claim 1, characterized in that: the outer diameter of the air distribution ring (3) is the same as the inner diameter of the gas phase conveying pipe (1).

10. The sludge atomization device according to claim 1, characterized in that: the side pipe (11) is vertical to the gas phase conveying pipe (1).