CN210012615U

CN210012615U - Ageing jar is used in nanometer calcium carbonate production

Info

Publication number: CN210012615U
Application number: CN201920020170.4U
Authority: CN
Inventors: 杜年军; 孙勇峰
Original assignee: Lushi Songlai Nanotechnology Co Ltd
Current assignee: Lushi Songlai Nanotechnology Co Ltd
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2020-02-04
Anticipated expiration: 2029-01-07

Abstract

The utility model discloses an aging tank for producing nano calcium carbonate, which comprises a tank body, wherein the top end of the tank body is provided with a feed inlet, the bottom end of the tank body is provided with a discharge outlet, the lower side wall of the tank body close to the tank body is provided with at least two groups of stirring devices and corresponding stirring power devices, and the stirring devices and the corresponding stirring power devices are arranged symmetrically by taking the circle center of the cross section of the tank body as the center; agitating unit includes (mixing) shaft and screw, and the (mixing) shaft passes and installs on jar body bottom lateral wall, and the (mixing) shaft is personally submitted 8-12 jiaos slope with the level downwards, and the (mixing) shaft becomes 6-10 inclination with jar body vertical section, and stirring power device passes through the (mixing) shaft and is connected with screw transmission, the utility model discloses prevent that the thick liquid from deposiing and the gathering forms "the bottom of a boiler" to make thick liquid intensive mixing, pipeline type emulsification pump makes thick liquid forced circulation, grinding, emulsification, homogeneity through pipeline connection, improves nano calcium carbonate's production quality, reduces carbonization synthetic reaction's cost.

Description

Ageing jar is used in nanometer calcium carbonate production

Technical Field

The utility model relates to an equipment technical field is used in the nanometer calcium carbonate production, especially relates to an ageing jar is used in nanometer calcium carbonate production.

Background

Fast digestion is beneficial to form more refined Ca (OH)₂The temperature of the slurry and the water for digestion has great influence on the digestion speed and is quickDigestion requires higher temperatures of the digestion water, which in turn requires a large amount of heat to heat the digestion water, which undoubtedly increases the production costs. In order to reduce the cost of some factories, low-temperature water is adopted for quick digestion, and the product often has a plurality of defects of high pH value, alkali return, high oil absorption value, no drying and the like. In order to solve the above problems, it is necessary to age the fine pulp after deslagging and refining the pulp after the rapid digestion with cold water for a certain period of time, the digestion reaction rate of the rapid digestion with cold water is only 80% insufficient, and some small particles of CaO are Ca (OH) during the digestion process₂And coating, which often cannot be released in time to participate in the reaction in the carbonization process, causes the phenomenon of 'alkali return' of the product and influences the product quality.

The prior raw slurry aging mode adopted by the domestic calcium carbonate industry is generally static aging, and the aging tanks have small volume and more number. The process has poor aging effect and is easy to cause unstable product quality. The dynamic aging is adopted, namely a large aging tank is adopted, but in the process of making the large aging tank, the electric power is wasted due to high-power stirring, bottom stirring cannot be realized, calcium hydroxide deposited at the bottom of the tank for a long time forms a 'pot bottom', so that a discharge port is blocked, and because the settling speed of impurities is higher during settling, more and more impurities accumulated at the bottom for a long time generate adverse effects on the quality of the nano calcium carbonate. And the traditional aging stirring can not realize the homogenization of the calcium hydroxide particles. Therefore, by using stirring propulsion and forced circulation of a pipeline type emulsification pump, the seminal plasma is finer and more uniform in particles, and unreacted calcium oxide and coated calcium oxide completely react during digestion. The aging tank reduces heat loss of seminal plasma, shortens aging time, and effectively prevents Ca (OH)₂Wrapping CaO to stabilize the concentration of refined slurry entering carbonization, Ca (OH)₂The particle size distribution is narrow. Therefore, the aging tank for producing the nano calcium carbonate needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a high-efficient, homogeneous nanometer calcium carbonate production is with ageing jar.

In order to solve the technical problem, the technical scheme of the utility model is that:

the aging tank for producing the nano calcium carbonate comprises a tank body, wherein a feed inlet is formed in the top end of the tank body, a discharge outlet is formed in the bottom end of the tank body, a stirring device and a corresponding stirring power device are arranged on the lower side wall of the tank body, at least two groups of stirring devices and corresponding stirring power devices are arranged on the lower side wall of the tank body, and the stirring devices and the corresponding stirring power devices are symmetrically arranged by taking the circle center; the stirring device comprises a stirring shaft and a propeller, the stirring shaft penetrates through and is arranged on the side wall of the bottom of the tank body, the stirring shaft and the horizontal plane form an angle of 8-12 degrees and inclines downwards, the stirring shaft and the vertical section of the tank body form an inclination angle of 6-10 degrees, and the stirring power device is in transmission connection with the propeller through the stirring shaft; the bottom end outside the tank body is connected with a pipeline type emulsification pump through a circulation pipeline.

As a preferable technical solution, the method is characterized in that: the inlet and the outlet of the pipeline type emulsification pump are respectively connected with an inlet connecting pipe and an outlet connecting pipe; the pipeline type emulsification pump is communicated with the tank body at a position close to the bottom through an inlet connecting pipe, and is communicated with the tank body at a position close to the top through an outlet connecting pipe.

As a preferable technical solution, the method is characterized in that: the stirring power device comprises a stirring motor and a stirring speed reducer, and the stirring motor is in transmission connection with the stirring device through the stirring speed reducer.

As a preferable technical solution, the method is characterized in that: the side lower extreme of the jar body is equipped with the mounting bracket, and agitator motor and stirring reduction gear are located respectively on the mounting bracket.

Through the utility model has the advantages that:

1. the utility model discloses a pair of screw that is special angle with the ageing jar body makes the bottom thick liquid rotatory, prevent that the thick liquid from deposiing and the gathering forms "the bottom of a boiler", and make thick liquid intensive mixing, adopt the pipeline emulsification pump to pass through the pipe connection simultaneously and make thick liquid forced circulation, grinding, emulsification, homogeneity, can make raw thick liquid secondary digestion, reduce the calcium hydroxide particle diameter, it is more even to make the calcium hydroxide particle, improve the fineness and the viscosity of thick liquid, help subsequent carbonization reaction, make the product particle diameter even, the pH value is low, the oil absorption value is low, improve nano calcium carbonate's production quality, reduce the cost of carbonization synthetic reaction.

2. The utility model discloses a propeller type axial flow type agitator has high displacement, low shear property, and the circulation ability is strong, and consumption of power is low, uses and embodies its advantage most in suspension, the mixing process when this kind of large capacity homogeneous phase of aging jar, solid liquid ratio hour, has effectively prevented the thick liquid and has depositd.

3. The utility model discloses a pipeline emulsification pump passes through the accurate combination of stator, produces powerful shearing force in high-speed rotation in order to realize mixing, smashes, and the online dispersion equipment of purpose efficient of emulsification installs and to carry out continuous processing to calcium hydroxide on the circulation pipeline of ageing jar to eliminate the quality difference between in batches.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

FIG. 1 is a schematic view of the layout structure of the stirring device of the present invention in the vertical direction of the tank body;

FIG. 2 is a schematic view of the layout structure of the stirring device of the present invention in the horizontal direction of the tank body;

in the figure: 1-tank body; 2-a feed inlet; 3-discharging port; 4-a stirring motor; 5-stirring motor reducer; 6-mounting a frame; 7-stirring shaft; 8-a propeller; 9-inlet connecting pipe; 10-line emulsification pumps; 11-outlet connection pipe.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1, nanometer calcium carbonate production is with ageing jar, including jar body 1, jar body 1 top is equipped with feed inlet 2, jar body bottom is equipped with discharge gate 3, its characterized in that: the lower end of the tank body 1 side is provided with a pair of split stirring devices, and the outer bottom end of the tank body 1 is connected with a pipeline type emulsification pump 10. The lower side wall of the tank body is provided with at least two groups of stirring devices and corresponding stirring power devices, and the stirring devices and the corresponding stirring power devices are symmetrically arranged by taking the circle center of the cross section of the tank body 1 as the center.

In the present embodiment, a pair of split stirring devices is arranged at the lower end of the side in the tank body 1, the stirring devices include a pair of split stirring shafts 7 installed at the lower end of the side of the tank body 1, and the stirring shafts 7 are inclined downward at an angle of 8-12 degrees, preferably 10 degrees, with respect to the horizontal plane. The stirring shaft 7 and the vertical section of the tank body 1 form an inclination angle of 6-10 degrees, and preferably an angle of 8 degrees. Both angles are proved to be scientific through theoretical calculation and a large number of verification tests. The upper end of the stirring shaft 7 is connected to the stirring power device in a transmission manner, and the bottom end of the stirring shaft is fixedly connected with a propeller 8. The propeller 8 stirs the materials in the tank body 1 to rotate the slurry at the bottom, so as to prevent the slurry from precipitating to aggregate to form a 'pot bottom', and the slurry is fully mixed. The propeller is the most typical axial flow type stirrer, has high liquid discharge capacity and low shearing performance, and the baffle plate is used for enabling the axial circulation of the stirrer to be stronger, so that the discharge performance is obviously improved.

The side lower extreme of jar body 1 is equipped with a pair of mounting bracket 6 that run from opposite directions, agitator motor 4 with stirring reduction gear 5 is located respectively on the mounting bracket 6.

The inlet and the outlet of the pipeline type emulsification pump 10 are respectively connected with an inlet connecting pipe 9 and an outlet connecting pipe 11; the pipeline type emulsification pump 10 is communicated with the tank body 1 at a position close to the bottom through an inlet connecting pipe 9, is communicated with the tank body 1 at a position close to the top through an outlet connecting pipe 11, and forces, circulates, grinds, emulsifies and homogenizes the slurry through the pipeline type emulsification pump 10. The pipeline type emulsification pump is high-efficiency on-line dispersion equipment which realizes the purposes of mixing, crushing and emulsification by generating strong shearing force in high-speed rotation through the precise combination of a rotating stator and a stator, and can be arranged on a circulating pipeline of an aging tank to continuously treat calcium hydroxide. And eliminates quality variation from batch to batch.

The utility model discloses a pair of screw makes the bottom thick liquid rotatory, prevents that the thick liquid from deposiing and the gathering forms "pot bottom" to make thick liquid intensive mixing, pipeline emulsification pump makes thick liquid forced circulation, grinding, emulsification, homogeneity through the pipe connection. Through the utility model discloses an aging tank can make the digestion of living thick liquid secondary, reduces the calcium hydroxide particle diameter, makes the calcium hydroxide particle more even, improves the fineness and the viscosity of thick liquid, helps subsequent carbonization reaction, makes the product particle diameter even, pH value low, the oil absorption value is low, improves nanometer calcium carbonate's production quality, reduces the cost of carbonization synthetic reaction.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a nanometer calcium carbonate production is with ageing jar, includes a jar body (1), jar body (1) top is equipped with feed inlet (2), jar body (1) bottom is equipped with discharge gate (3), its characterized in that: the side wall of the tank body close to the lower side is provided with a stirring device and a corresponding stirring power device, and the stirring devices and the corresponding stirring power devices are at least two groups and are symmetrically arranged by taking the circle center of the cross section of the tank body (1) as the center; the stirring device comprises a stirring shaft (7) and a propeller (8), the stirring shaft (7) penetrates through and is installed on the side wall of the bottom of the tank body (1), the stirring shaft (7) and the horizontal plane form an angle of 8-12 degrees and inclines downwards, the stirring shaft (7) and the vertical section of the tank body (1) form an inclination angle of 6-10 degrees, and the stirring power device is in transmission connection with the propeller (8) through the stirring shaft (7); the outer bottom end of the tank body (1) is connected with a pipeline type emulsification pump (10) through a circulation pipeline.

2. The aging tank for producing nano calcium carbonate according to claim 1, wherein: the inlet and the outlet of the pipeline type emulsification pump (10) are respectively connected with an inlet connecting pipe (9) and an outlet connecting pipe (11); the pipeline type emulsification pump (10) is communicated with the position, close to the bottom, of the tank body (1) through an inlet connecting pipe (9); the pipeline type emulsification pump (10) is communicated with the position, close to the top, of the tank body (1) through an outlet connecting pipe (11).

3. The aging tank for producing nano calcium carbonate according to claim 1, wherein: the stirring power device comprises a stirring motor (4) and a stirring speed reducer (5), wherein the stirring motor (4) is in transmission connection with the stirring device through the stirring speed reducer (5).

4. The aging tank for producing nano calcium carbonate according to claim 3, wherein: the side lower extreme of the jar body (1) is equipped with mounting bracket (6), agitator motor (4) with stirring reduction gear (5) are located respectively on mounting bracket (6).

5. The aging tank for producing nano calcium carbonate according to claim 1, wherein: the stirring shaft (7) and the horizontal plane form an angle of 10 degrees and are inclined downwards.

6. The aging tank for producing nano calcium carbonate according to claim 1, wherein: the stirring shaft (7) and the vertical section of the tank body (1) form an inclination angle of 8 degrees.