CN213724887U

CN213724887U - Multi-nozzle structure of spray dryer

Info

Publication number: CN213724887U
Application number: CN202022528598.5U
Authority: CN
Inventors: 贺晓明
Original assignee: Wuxi Zhuoling Drying Equipment Co ltd
Current assignee: Wuxi Zhuoling Drying Equipment Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-07-20
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a spray dryer multi-nozzle structure, which relates to the field of spray dryer parts and comprises a spray pipe structure and a nozzle structure, wherein the nozzle structure is fixedly arranged at the discharge end of the spray pipe structure; the spray pipe structure comprises a slurry pipe and an air inlet pipe, and the air inlet pipe is sleeved on the periphery of the slurry pipe; the spray head structure comprises a mixing cavity arranged in the middle, an air inlet nozzle communicated with the mixing cavity and a spray head; the mixing chamber is communicated with the discharge end of the slurry pipe, one end of the air inlet nozzle is connected with the discharge end of the air inlet pipe, the other end of the air inlet nozzle is communicated with the mixing chamber, and a plurality of injection nozzles which are annularly arranged are installed at the discharge end of the mixing chamber. The utility model discloses a set up thick liquids and the mixing chamber of helping the atomizing gas, can guarantee that thick liquids and the even mixing of helping the atomizing gas form the coupling cyclone, guarantee the atomizing homogeneity of thick liquids.

Description

Multi-nozzle structure of spray dryer

Technical Field

The utility model relates to a spray dryer spare part field, in particular to spray dryer many shower nozzles nozzle structure.

Background

The spray dryer plays an important role in the field of wet-process powder production, and the wet raw materials are dehydrated by a physical method to produce dry powder. The material to be dried is dispersed into fine mist-like liquid drops through mechanical action, and the fine mist-like liquid drops are quickly dried into powder after being contacted with hot air. Wherein the nozzle material, structure, size, etc. of the spray dryer has a significant influence on the quality of the dried powder. The existing spray dryer has a limited spray range of a nozzle, and cannot make slurry uniformly and dispersedly contacted with hot air, so that dried powder is not uniform and the use efficiency of hot air is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a spray dryer many shower nozzles nozzle structure solves current nozzle

In order to solve the technical problem, the utility model discloses a technical scheme does:

a spray dryer multi-nozzle structure comprises a spray pipe structure and a nozzle structure, wherein the nozzle structure is fixedly arranged at the discharge end of the spray pipe structure;

the spray pipe structure comprises a slurry pipe and an air inlet pipe, and the air inlet pipe is sleeved on the periphery of the slurry pipe;

the spray head structure comprises a mixing cavity arranged in the middle, an air inlet nozzle communicated with the mixing cavity and a spray head; the mixing chamber is communicated with the discharge end of the slurry pipe, one end of the air inlet nozzle is connected with the discharge end of the air inlet pipe, the other end of the air inlet nozzle is communicated with the mixing chamber, and a plurality of injection nozzles which are annularly arranged are installed at the discharge end of the mixing chamber.

Preferably, the spray pipe structure and the spray head structure are fixedly connected through a step-shaped connecting sleeve.

Preferably, a sealing ring is arranged between the spray pipe structure and the spray head structure.

Preferably, the number of the spray nozzles is three, and the three spray nozzles are uniformly arranged at the discharge end of the nozzle structure in an annular manner.

Preferably, a pre-membrane is arranged at the outlet of the spray nozzle.

Adopt above-mentioned technical scheme, the utility model discloses a set up thick liquids and the mixing chamber of helping the atomizing gas, can guarantee that thick liquids and the even mixture of helping the atomizing gas form the coupling cyclone, guarantee the atomizing homogeneity of thick liquids, the even circumference that has realized the thick liquid through the nozzle structure of many shower nozzles simultaneously sprays, it is more even to make the liquid droplet size after the atomizing, the homogeneity of powder drying effect has been improved, moisture evaporates more easily in the liquid droplet that evenly sprays simultaneously, hot-blast utilization ratio has been improved, the energy consumption has been reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1-connecting sleeve, 2-slurry pipe, 3-air inlet pipe, 4-sealing ring, 5-mixing cavity, 6-air inlet nozzle, 7-jet nozzle and 8-pre-diaphragm.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a multi-nozzle structure of a spray dryer includes a nozzle tube structure and a nozzle structure, wherein the nozzle structure is fixedly installed at a discharge end of the nozzle tube structure;

the spray pipe structure comprises a slurry pipe 2 and an air inlet pipe 3, and the air inlet pipe 3 is sleeved on the periphery of the slurry pipe 2;

the spray head structure comprises a mixing cavity 5 arranged in the middle, an air inlet nozzle 6 communicated with the mixing cavity 5 and a spray head 7; the mixing chamber 5 is communicated with the discharge end of the slurry pipe 2, one end of the air inlet nozzle 6 is connected with the discharge end of the air inlet pipe 3, the other end of the air inlet nozzle is communicated with the mixing chamber 5, the mixing chamber 5 and the air inlet pipe 3 can be communicated through the air inlet nozzle 6, and a plurality of injection nozzles 7 which are annularly arranged are installed at the discharge end of the mixing chamber 5.

During the use, thick liquids are squeezed into thick liquids pipe 2 under the effect of high-pressure plunger pump, discharge into mixing chamber 5 through thick liquids pipe 2, inject into the gas that has certain pressure in 5 mixing chambers through intake pipe 3 simultaneously for thick liquids form the coupling cyclone with gas after entering mixing chamber 5, spout through the even circumference of a plurality of injection shower nozzles 7 at last, and the thick liquids that erupt contact high-temperature gas in the short time, and the inside moisture of liquid drop evaporates sharply, is dried into the powder.

The utility model discloses a set up thick liquids and the mixing chamber 5 of helping the atomizing gas, can guarantee that thick liquids and the even mixture of helping the atomizing gas form the coupling cyclone, guarantee the atomizing homogeneity of thick liquids, the nozzle structure through many shower nozzles has realized the even circumference of thick liquids simultaneously and has sprayed, makes the liquid drop size after the atomizing more even, has improved the homogeneity of powder drying effect, moisture evaporates more easily in the liquid drop of evenly spraying simultaneously, has improved hot-blast utilization ratio, has reduced the energy consumption.

Specifically, through step-shaped connecting sleeve 1 fixed connection between spray pipe structure and the shower nozzle structure, can be when guaranteeing effective fixed connection, processing simple to operate.

In order to guarantee the sealing effect of being connected between spray tube structure and the shower nozzle structure, be equipped with sealing ring 4 between spray tube structure and the shower nozzle structure, guarantee that thick liquids from the effective pressure that enters into in the shower nozzle structure behind the spray tube structure blowout.

In order to ensure the uniformity of discharging and the balance of effective pressure, the number of the spray nozzles 7 is three, and the spray nozzles are annularly and uniformly arranged at the discharging end of the nozzle structure.

In order to facilitate regulation of the mist shape of the slurry sprayed from the spray nozzle 7, the pre-diaphragm 8 is arranged at the outlet of the spray nozzle 7, a part of the slurry is sprayed on the pre-diaphragm 8 to form a liquid film in the spraying process, the liquid film is crushed into small liquid drops under the impact force of the mixed slurry with certain pressure in the follow-up process and is discharged together with the small liquid drops, and the pre-diaphragm 8 is arranged at the spray nozzle 7, so that compared with the mixed slurry directly sprayed, the pneumatic atomization characteristic of the mixed slurry is improved, and the effect of regulating the mist shape can be achieved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a spray dryer multiinjector nozzle structure which characterized in that: the spray nozzle structure is fixedly arranged at the discharge end of the spray pipe structure;

the spray pipe structure comprises a slurry pipe (2) and an air inlet pipe (3), wherein the air inlet pipe (3) is sleeved on the periphery of the slurry pipe (2);

the spray head structure comprises a mixing cavity (5) arranged in the middle, an air inlet nozzle (6) communicated with the mixing cavity (5) and a spray head (7); the mixing chamber (5) is communicated with the discharge end of the slurry pipe (2), one end of the air inlet nozzle (6) is connected with the discharge end of the air inlet pipe (3), the other end of the air inlet nozzle is communicated with the mixing chamber (5), and a plurality of injection nozzles (7) which are annularly arranged are installed at the discharge end of the mixing chamber (5).

2. The spray dryer multi-nozzle structure of claim 1, wherein: the spray pipe structure and the spray head structure are fixedly connected through a step-shaped connecting sleeve (1).

3. The spray dryer multi-nozzle structure of claim 1, wherein: and a sealing ring (4) is arranged between the spray pipe structure and the spray head structure.

4. The spray dryer multi-nozzle structure of claim 1, wherein: the number of the spray nozzles (7) is three, and the spray nozzles are uniformly arranged at the discharge end of the nozzle structure in an annular manner.

5. The spray dryer multi-nozzle structure of claim 1, wherein: and a pre-membrane (8) is arranged at the outlet of the spray nozzle (7).