CN215743002U

CN215743002U - Stirring kettle

Info

Publication number: CN215743002U
Application number: CN202121926086.2U
Authority: CN
Inventors: 陈淼
Original assignee: Dalian Yihe Mixing Equipment Co ltd
Current assignee: Dalian Yihe Mixing Equipment Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-08
Anticipated expiration: 2031-08-17

Abstract

The utility model relates to a stirring kettle, which comprises a container, blades, a shaft and a motor, wherein the blades are arranged on the container; the shaft is positioned on the central axis of the container, and the integral structure of the paddle is vertical to the shaft and is connected with the motor through the shaft; the center part of the bottom of the container is provided with a raised structure which is raised upwards. Through simple and reasonable structural design, the problem that the dead zone in the middle of the bottom cannot be stirred in the stirring process is solved, and safe and efficient production operation and product quality are guaranteed; can be widely applied to the fields of solid-liquid suspension, dispersion or dissolution and various liquid-liquid crystallization.

Description

Stirring kettle

Technical Field

The utility model relates to a chemical, physical or physical-chemical mixing device, in particular to a stirring kettle mainly used for solid-liquid mixing and liquid-liquid mixing crystallization.

Background

The stirred tank is a mixing device which pushes materials in the container through an impeller rotating in the container, and can be divided into a homogeneous stirred tank and a heterogeneous stirred tank according to the phase state of the reaction materials. The homogeneous stirring kettle comprises a liquid-liquid stirring kettle and a solid-solid stirring kettle; the heterogeneous stirred tank comprises a solid-liquid stirred tank, a liquid-liquid stirred tank, a gas-liquid stirred tank and a gas-liquid-solid three-phase stirred tank.

The stirring of the materials mainly aims at mixing, dissolving, dispersing, solid suspension, reaction, emulsification, extraction, crystallization, heat transfer and the like. Different stirring kettles are designed according to different stirring purposes in order to finally achieve the stirring purposes, and the structure of the stirring kettle directly influences the material yield and the finished product efficiency.

In some cases, such as where the stirring is performed for liquid-solid suspension and dissolution, the liquid contains solid particles that are soluble in the liquid, or the liquid contains solid particles that are insoluble in the liquid, the solid particles should be uniformly suspended in the liquid during the stirring, and there is no dead space where the stirring cannot be performed to achieve the desired suspension and dissolution effect, which requires some measures to prevent the formation of stirring dead space. In other occasions, liquid-liquid crystallization, such as liquid crystallization during stirring, including physical crystallization and chemical crystallization, the crystallized particles need to continuously move in the liquid to realize the culture growth of crystal grains, if a dead zone of the stirring kettle is generated, the crystallized crystal grains in the dead zone do not move or move slowly in the liquid, so that the crystal grains can be adhered to the bottom or the discharge port of the kettle to cause stirring failure or difficult discharge. In some occasions, liquid-solid is dispersed and dissolved, a certain amount of solid particles are added into liquid, the solid particles are quickly dissolved in the liquid, if a dead zone is generated in a stirring kettle, the solid particles can be bonded together to form a larger block-shaped solid due to slow or no movement of the solid particles in the liquid, and the phenomenon of impact or seizure to stirring can be caused, so that equipment failure can be caused.

In view of the above problems, the technical personnel take corresponding measures, including: according to chinese patent, "a prevent accumulational reation kettle of solid particulate matter", CN206980707U, including the cauldron body, the below of the cauldron body has the discharge gate, the discharge gate below is connected with ball valve one, the discharge gate top is equipped with the arcuation baffle, the periphery of arcuation baffle supports the bottom at the cauldron body, be equipped with a connecting rod on the baffle, the lower extreme of connecting rod is located ball valve one's case export top, and when ball valve one closed, the lower extreme of connecting rod supports and leans on the case and the separation of arcuation baffle and the bottom of the cauldron body at ball valve one, can avoid solid particulate matter to appear piling up the phenomenon in the discharge gate. The technical solution of this patent has played the effect that prevents to a certain extent and has blockked up the discharge gate below the container at solid particulate matter, but its problem that can really not solve the blind spot that the stirring that exists in the stirring in-process container bottom can not reach in fact. The discharge port is positioned right below the arc-shaped baffle, so that when discharging is needed, the arc-shaped baffle at the upper end of the discharge port needs to move upwards, and discharging can be carried out when the arc-shaped baffle leaks out of the discharge port; meanwhile, when the discharge valve is closed, the arc-shaped baffle needs to move downwards, and when solid particles exist in liquid, the arc-shaped baffle can be clamped above the solid particles, so that the problem of untight closing is caused.

Disclosure of Invention

In view of the above problems in the prior art, the present invention aims to provide a stirring tank, which can more scientifically and effectively solve the problem of dead space at the bottom of the stirring tank where no stirring is available during the mixing and/or reaction process, so as to obtain more efficient and reliable mixing and/or reaction effect, and further ensure the high efficiency and safety of production.

The technical solution of the utility model is realized as follows:

a stirring kettle comprises a container, a paddle, a shaft and a motor; the shaft is positioned on the central axis of the container, and the integral structure of the paddle is vertical to the shaft and is connected with the motor through the shaft;

the center part of the bottom of the container is provided with a raised structure which is raised upwards.

Under the working state, the motor rotates to drive the blades to rotate in the container through the shaft, so that the materials in the container are pushed to rotate and mix; when solid materials participate in mixing or are crystallized and separated out in the stirring kettle, the solid particles have the tendency of sinking under the action of gravity; under the action of centrifugal force, the position closer to the central axis is smaller, so that the central position of the bottom in the container is most likely to form the stirring dead zone, and the problems of stirring failure or difficult discharging and the like caused by insufficient stirring and mixing are solved; the raised structure is set in the center of the container bottom, and this can avoid the said problems effectively.

Further, the cross sectional dimension of the convex structure is gradually increased from top to bottom, specifically, for example, when the bottom of the container is seen from the outside of the stirring kettle upwards, the outer contour of the convex structure can be a conical surface, a pyramidal surface, a hemispherical surface or a quasi-hemispherical surface, or a conical surface and a cylindrical surface, or a combination of the pyramidal surface and the cylindrical surface, or the hemispherical surface (and the quasi-hemispherical surface) and the cylindrical surface

Specifically, the container comprises a cylinder body and a bottom cover, and a discharge port is arranged at the lowest position of the bottom cover;

the protruding structure is located at the central part of the bottom cover.

Further, the cylinder body can adopt a cubic structure or a cylindrical structure; the bottom cover can be a plate-shaped end socket or a concave end socket.

Furthermore, the inner wall of the cylinder body is provided with a baffle.

Specifically, the paddle may adopt one of a turbine type, a paddle type, a propeller type, a hinge type, a bending type or an anchor frame type.

Under the driving of the rotating blades 3 and under the action of the baffle plate on the inner wall of the container barrel, the materials in the container rotate around the shaft and roll up and down at the same time, and the phenomenon that the solid particles are stuck on the wall or agglomerated under the static state can not be generated. The bin outlet set up in the lowest position of bottom is located the periphery of protruding structure, under gravity and centrifugal force effect, solid particle material can gather the bin outlet department, the convenient row of expecting.

Compared with the prior art, the utility model effectively avoids the occurrence of stirring dead zones by simple and scientific structural design, overcomes various technical problems and equipment faults caused by the stirring dead zones in the prior art, and ensures safe and efficient production operation and product quality; can be widely applied to the fields of solid-liquid suspension, dispersion or dissolution and various liquid-liquid crystallization.

Drawings

FIG. 1 is a schematic diagram of the structure of a stirred tank and the movement trend of the materials therein provided in example 1 of the present invention;

FIG. 2 is a schematic diagram of the structure of a stirred tank and the movement trend of the materials therein provided in example 2 of the present invention.

In the figure:

1. the device comprises a motor 2, a shaft 3, a blade 4, a container 4-1, a bottom cover 4-2, a cylinder 5, a convex structure 6, a discharge port 7, a baffle 8 and solid particles.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

Example 1

A stirring kettle is shown in figure 1 and comprises a container 4, a blade 3, a shaft 2 and a motor 1; the shaft 2 is positioned on the central axis of the container 4, and the paddle 3 is vertical to the shaft 2 in the whole structure and is connected with the motor 1 through the shaft 2; the container 4 comprises a cylinder 4-2 and a bottom cover 4-1; a raised structure 5 which is raised upwards is arranged at the central part of the bottom cover 4-1, and a discharge port 6 is arranged at the lowest position of the bottom cover 4-1; a baffle 7 is arranged on the inner wall of the cylinder 4-2.

The stirring kettle can be used for stirring and mixing solid-liquid materials, such as sewage treatment, catalyst production, wine brewing and other working conditions. In a working state, when the motor 1 rotates, the shaft 2 drives the paddle 3 to rotate, and the paddle 3 can adopt a turbine type, paddle type, propulsion type, hinge type or bending type structure; when the shaft 2 rotates clockwise when viewed from the upper end of the motor 1, the paddle 3 will push the liquid and solid particles 8 to rotate axially, and the center of the bottom cover 4-1 of the container is provided with the convex structure 5, so that the accumulation of solid materials at the center of the bottom of the container 4 is avoided: the solid materials slide along the convex structures 5 in the direction away from the axis under the action of centrifugal force, and are more fully stirred under the rotating action of the blades 3; meanwhile, the liquid can push the solid particles 8 to move from bottom to top along the inner wall of the container 4 under the action of the baffle 7, so that the solid particles 8 can be fully suspended in the liquid without residue, and a more sufficient stirring effect is achieved.

Specifically, the cross-sectional dimension of the protruding structure 5 is gradually increased from top to bottom; for example, when the bottom of the container is viewed from the outside of the stirring tank upwards, the external contour of the convex structure 5 may be a conical surface, a pyramidal surface, a hemispherical surface or a hemispherical surface, or a conical surface and a cylindrical surface, or a pyramidal surface and a cylindrical surface, or a combination of a hemispherical surface (and a hemispherical surface) and a cylindrical surface.

Example 2

A stirred tank, as shown in fig. 2, which is different from example 1 mainly in that: the paddle 3 is an anchor frame type paddle (generally called an anchor frame type when the shape of the bottom of the paddle 3 is similar to the shape of the bottom cover 4-1 of the stirring kettle).

The working principle of the method is the same as that of the embodiment 1, the method is often applied to working conditions including DCP adhesive production, BRBP adhesive production and the like, because physical crystallization is generated in the production process, if the shearing force of the impeller is too large, crystallized particles are broken, the yield is reduced, and at this time, an anchor impeller with low rotating speed and small shearing force is required to replace a paddle impeller, as shown in FIG. 2.

The above description is only a few embodiments, not all embodiments, of the present invention; the scope of the utility model is not limited thereto, and the utility model may be used in various other applications and forms. Any person skilled in the art should be able to cover the technical scope of the present invention by the technical solutions and the inventive concepts of the present invention with equivalent alternatives or modifications within the technical scope of the present invention.

Claims

1. A stirring kettle comprises a container (4), a blade (3), a shaft (2) and a motor (1); the shaft (2) is positioned on the central axis of the container (4), and the integral structure of the paddle (3) is vertical to the shaft (2) and is connected with the motor (1) through the shaft (2); the method is characterized in that:

and a raised structure (5) which is raised upwards is arranged at the central part of the bottom of the container (4).

2. The stirred tank of claim 1, wherein:

the cross section size of the convex structure (5) is gradually increased from top to bottom.

3. The stirred tank of claim 1, wherein:

the container (4) comprises a cylinder body (4-2) and a bottom cover (4-1), and a discharge opening (6) is arranged at the lowest position of the bottom cover (4-1);

the protruding structure (5) is positioned at the central part of the bottom cover (4-1).

4. The stirred tank of claim 3, wherein:

the cylinder body (4-2) of the container is of a cubic or cylindrical structure;

the bottom cover (4-1) of the container is a plate-shaped end cover or a concave end cover.

5. The stirred tank of claim 3, wherein:

the inner wall of the cylinder (4-2) of the container is provided with a baffle (7).

6. The stirred tank of any one of claims 1 to 5, wherein:

the paddle (3) adopts one of a turbine type, a paddle type, a propelling type, a folding blade type, a bending type or an anchor frame type structure.