阅读说明：本技术 一种石膏煅烧器及工作原理 (Gypsum calciner and working principle ) 是由 杨正波 张羽飞 侯志刚 任有欢 李绍冉 于 2018-08-28 设计创作，主要内容包括：本发明提供了一种石膏煅烧器,所述石膏煅烧器包括由上至下依次设置进料装置(1)、底吹装置(2)和均风装置(3)；所述进料装置(1)包括将输送至壳体(4)内的石膏粉料进行初次打散的第一散料帽(11)以及在所述第一散料帽(11)上均匀分布的多个落料通孔(12)；所述底吹装置(2)包括将经过所述初次打散后的所述石膏粉料进行二次打散的第二散料帽(21)、布风管(22)、均风板(23)以及在所述第二散料帽(21)与所述均风板(23)之间的所述布风管(22)上均匀分布的多个通气孔(24)；该装置,通过将输送至石膏煅烧器内的石膏粉末打散,进而流态化,避免石膏煅烧器内局部过烧、影响粉料的性质。(The invention provides a gypsum calcinator, which comprises a feeding device (1), a bottom blowing device (2) and an air equalizing device (3) which are arranged from top to bottom in sequence; the feeding device (1) comprises a first scattering cap (11) for primarily scattering gypsum powder conveyed into the shell (4) and a plurality of blanking through holes (12) uniformly distributed on the first scattering cap (11); the bottom blowing device (2) comprises a second scattering cap (21) for secondarily scattering the gypsum powder after primary scattering, an air distribution pipe (22), an air equalizing plate (23) and a plurality of vent holes (24) uniformly distributed on the air distribution pipe (22) between the second scattering cap (21) and the air equalizing plate (23); the device breaks up the gypsum powder conveyed into the gypsum calcinator, and then fluidizes, so that local overburning in the gypsum calcinator and influence on the property of the powder are avoided.)

1. A gypsum calcinator is characterized by comprising a feeding device (1), a bottom blowing device (2) and an air equalizing device (3) which are arranged from top to bottom in sequence;

the feeding device (1) comprises a first scattering cap (11) for primarily scattering gypsum powder conveyed into the shell (4) and a plurality of blanking through holes (12) uniformly distributed on the first scattering cap (11);

the bottom blowing device (2) comprises a second scattering cap (21) for secondarily scattering the gypsum powder after primary scattering, an air distribution pipe (22), an air equalizing plate (23) and a plurality of vent holes (24) uniformly distributed on the air distribution pipe (22) between the second scattering cap (21) and the air equalizing plate (23);

the air equalizing device (3) comprises an air distribution plate (31), an air inlet pipe (32) and an air equalizing cone (33) which are sequentially arranged from top to bottom and used for fluidizing the gypsum powder after the secondary scattering.

2. The gypsum calciner according to claim 1, wherein the plurality of ventilation holes (24) are arranged obliquely, and an extension line (25) of a center line of the plurality of ventilation holes (14) intersects the air-equalizing plate (23).

3. The gypsum calciner of claim 2, wherein the angle between the extension line (25) and the air-homogenizing plate (23) is 8-45 °.

4. The gypsum calciner of claim 1, wherein the first surface (231) of the air-distributing plate (23) comprises a plurality of uniformly distributed pits or bumps having the same size and shape.

5. The gypsum calciner according to claim 4, wherein the plurality of pits or bumps are arranged in a matrix, and the distance between two adjacent pits or bumps is 0-10 mm.

6. The gypsum calciner according to claim 1, wherein the diameter of the first dispersion cap (11) is 0.8 to 1.3 times the diameter of the second dispersion cap (21).

7. The gypsum calciner according to claim 1, further comprising a discharge port (5), wherein the height of the discharge port (5) is lower than the height of the air-equalizing plate (23).

8. A gypsum calciner working principle is characterized by comprising the following steps:

101: conveying high-pressure air into a shell (4) of the gypsum calcinator through an air equalizing device (3) of the gypsum calcinator;

102: conveying bottom-blown air into the housing (4) of the gypsum calciner through a bottom-blowing device (2) of the gypsum calciner;

103: conveying gypsum powder through a feed device (1) of the gypsum calciner into the housing (4) of the gypsum calciner;

104: the suspension height of the fluidized gypsum powder is higher than the height of the discharge hole (5) and lower than the height of the air-equalizing plate (23) by adjusting the wind speed of the high-pressure air.

Technical Field

The invention relates to a gypsum production device, in particular to a gypsum calcinator and a working principle.

Background

In the calcining process of the gypsum, the calcining process of the two-step process is uniform and stable, the calcined gypsum has high effective components and good bleeding property, and the setting time of the subsequent production molding is easy to adjust. And thus are increasingly used. However, in the second-step calcining apparatus (calciner), local overburning is caused due to uneven distribution of the powder in the calciner, and the property of the powder is affected.

Disclosure of Invention

In view of the above problems, the present invention is directed to solving the above-described problems. It is an object of the present invention to provide a gypsum calciner that solves the above problems by breaking up, fluidizing, and avoiding local overburning, affecting the properties of the fines, the gypsum powder being transported into the gypsum calciner.

A gypsum calcinator comprises a feeding device 1, a bottom blowing device 2 and an air equalizing device 3 which are arranged from top to bottom in sequence;

the feeding device 1 comprises a first scattering cap 11 for primarily scattering gypsum powder conveyed into the shell 4 and a plurality of blanking through holes 12 uniformly distributed on the first scattering cap 11;

the bottom blowing device 2 comprises a second scattering cap 21 for secondarily scattering the gypsum powder after primary scattering, an air distribution pipe 22, an air equalizing plate 23 and a plurality of vent holes 24 uniformly distributed on the air distribution pipe 22 between the second scattering cap 21 and the air equalizing plate 23;

the air equalizing device 3 comprises an air distribution plate 31, an air inlet pipe 32 and an air equalizing cone 33 which are sequentially arranged from top to bottom and used for fluidizing the gypsum powder after the secondary scattering.

Wherein, the plurality of vent holes 24 are obliquely arranged, and extension lines 25 of the center lines of the plurality of vent holes 14 are intersected with the air-equalizing plate 23.

Wherein, the included angle between the extension line 25 and the air-equalizing plate 23 is 8-45 degrees.

The first surface 231 of the air equalizing plate 23 includes a plurality of concave points or convex points which are uniformly distributed and have the same size and shape.

Wherein, the plurality of concave points or convex points are distributed in a matrix, and the distance between two adjacent concave points or convex points is 0-10 mm.

Wherein the diameter of the first dispersion cap 11 is 0.8-1.3 times of the diameter of the second dispersion cap 21.

Wherein, the gypsum calcinator also comprises a discharge port 5, and the height of the discharge port 5 is lower than that of the air equalizing plate 23.

Wherein, a gypsum calciner theory of operation includes:

101: conveying high-pressure air into a shell 4 of the gypsum calcinator through an air equalizing device 3 of the gypsum calcinator;

102: conveying bottom-blown air through a bottom-blowing device 2 of the gypsum calciner into the housing 4 of the gypsum calciner;

103: conveying gypsum powder through a feed device 1 of the gypsum calciner into the housing 4 of the gypsum calciner;

104: the suspension height of the fluidized gypsum powder is higher than the height of the discharge port 5 and lower than the height of the air-equalizing plate 23 by adjusting the wind speed of the high-pressure air.

According to the gypsum calciner disclosed by the invention, gypsum powder is injected into the gypsum calciner through the feeding device, the gypsum powder is subjected to homogenization treatment through the bottom blowing device, meanwhile, the gypsum powder subjected to homogenization treatment is fluidized through the matching of the air homogenizing device, and the fluidized gypsum powder is discharged through the discharge hole.

Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

FIG. 1 schematically illustrates a block diagram of a gypsum calciner of the present invention;

fig. 2 schematically shows a partial view of a bottom-blowing device and a feeding device of the gypsum calciner of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The gypsum calciner is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the gypsum calcining device may include a feeding device 1, a bottom blowing device 2 and an air equalizing device 3 arranged in sequence from top to bottom;

in order to break up the gypsum powder, the feeding device 1 may include a first scattering cap 11 for primarily breaking up the gypsum powder conveyed into the housing 4 and a plurality of blanking through holes 12 uniformly distributed on the first scattering cap 11;

meanwhile, in order to further refine the gypsum powder, the bottom blowing device 2 may include a second scattering cap 21 for secondarily scattering the primarily scattered gypsum powder, an air distribution pipe 22, an air equalizing plate 23, and a plurality of vent holes 24 uniformly distributed on the air distribution pipe 22 between the second scattering cap 21 and the air equalizing plate 23;

in order to convert the gypsum powder into fluidization, the air-equalizing device 3 may include an air distribution plate 31, an air inlet pipe 32 and an air-equalizing cone 33, which are arranged in sequence from top to bottom, for fluidizing the secondarily dispersed gypsum powder.

Specifically, the plurality of vent holes 24 can be obliquely arranged, extension lines 25 of center lines of the plurality of vent holes 14 are intersected with the air equalizing plate 23, air is introduced through the air inlet pipe 32, the air passes through the plurality of vent holes 24 and the air equalizing plate 23 and is staggered with falling gypsum powder, the gypsum powder is further scattered, and the blocked air can be obviously seen to form a mixed layer with the gypsum powder.

Meanwhile, the included angle between the extension lines 25 of the inclined vent holes 24 and the air-equalizing plate 23 can be 8-45 degrees.

Research shows that when the surface of one side of the air-equalizing plate 23 is rough, the reflection range of the gas can be expanded, similar to the diffuse reflection of light, and in one embodiment, the surface of the air-equalizing plate 23 includes a plurality of concave points or convex points with the same size and shape, the plurality of concave points or convex points can be distributed in a matrix, and the distance between two adjacent concave points or convex points is 0-10 mm. Of course, it is also possible to select a wind equalizing plate 23 having a roughness of 0.05-0.5.

Also, the diameters of the first and second caps 11 and 21 are not significantly different, and in order to ensure sufficient contact, the diameter of the first cap 11 may be 0.8 to 1.3 times the diameter of the second cap 21.

In order to facilitate the discharge of the fluidized gypsum powder, the gypsum calciner may further comprise a discharge port 5, and the height of the discharge port 5 is lower than that of the air-homogenizing plate 23.

A gypsum calciner operating principle comprising:

101: the high-pressure air can be conveyed into a shell 4 of the gypsum calcinator through an air equalizing device 3 of the gypsum calcinator;

102: the bottom-blown air can be conveyed into the shell 4 of the gypsum calciner through the bottom-blown device 2 of the gypsum calciner;

103: gypsum powder can be conveyed into the housing 4 of the gypsum calciner through the feeding device 1 of the gypsum calciner;

104: the suspended height of the fluidized gypsum powder can be made higher than the height of the discharge port 5 and lower than the height of the air-equalizing plate 23 by adjusting the wind speed of the high-pressure air.