CN104353377B - A kind of agitating device with agitating plate - Google Patents

Abstract

The invention discloses a kind of agitating device with agitating plate, including housing, the motor of installation housing bottom centre, be installed vertically on the stirring crossbeam fixed vertical with shaft of the shaft above motor, it is characterised in that: also include agitating plate；Described agitating plate is vertically arranged and fixes with beam vertical；It is uniformly arranged sawtooth on the outward flange of agitating plate.Stirring crossbeam arranges agitating plate, adds mixing component, stirred by stirring crossbeam and agitating plate simultaneously, adding stirring number of times, mixing effect improves, while the setting of arc agitating plate makes to stir the laborsaving saving energy, stirring efficiency is greatly improved, and the mixed effect of stirring is the most notable；The trapezoidal radian of arc agitating plate designs layer by layer, increases agitating plate and the contact area of stirring thing, stirring more abundant, and mixing effect is good.

Description

A stirring device with a stirring plate

technical field

The invention relates to a stirring device, in particular to a stirring device with a stirring plate.

Background technique

The stirring device generally consists of a motor, a rotating rod connected to the motor, and a stirring paddle arranged on the rotating rod. The function of the stirring device is to make the liquid and gas medium forced convection and uniform mixing. Most of the stirring devices currently used in industry The devices all have a single structure, and when stirring a liquid medium with a high density, the stirring effect is not good, and the service life of the parts of the stirring device is short.

The purpose of stirring: liquid-liquid mixing, gas-liquid mixing and solid-liquid mixing. The influencing factors of stirring are as follows:

1) The type, size, and rotational speed of the agitator have an effect on the distribution of agitation power between bulk flow and turbulent pulsations.

2) Stirring viscosity of different media viscosities refers to the resistance ability of fluid to flow, which is called dynamic viscosity. When the fluid flows, it is divided into three states: laminar flow, transitional flow, and turbulent flow, and the main factor determining these three states is the viscosity of the fluid.

3) The internal components of stirring, especially the impeller, guide tube, baffle, etc. are also important factors affecting stirring.

other

The movement of the liquid in the stirred tank can be divided into bulk flow and turbulent flow in terms of scale. The flow rate of the overall flow is called the circulation volume, and increasing the circulation volume is beneficial to improve the uniformity of the macro-mixing (see mixing degree). The intensity of turbulent fluctuations is related to the velocity of the fluid when it leaves the agitator, and strengthening the turbulent fluctuations is beneficial to reduce the separation scale and separation strength. Different processes have different requirements for these two flows. The dispersion of liquid droplets and bubbles requires strong turbulent flow; the uniform suspension of solid particles depends on the overall flow. The distribution of energy between these two flows during stirring is an important issue in the design of the stirrer.

When stirring the mixture, the density difference, viscosity and interfacial tension of the two phases have a great influence on the stirring operation. The smaller the density difference and the interfacial tension, the easier it is for the system to achieve stable dispersion; the higher the viscosity, the more unfavorable it is to form a good circulation flow and sufficient turbulent pulsation, and consume more stirring power.

The movement of the fluid in the stirred tank is complex single-phase flow or multi-phase flow. Stirring of non-Newtonian fluids has some special laws in terms of flow state and power consumption. The measurement of the fluid flow parameters in the stirring tank, the prediction of the stirring power, and the amplification method of the stirring device are all important topics in the research of stirring theory and engineering application.

Viscosity refers to the fluid's resistance to flow, which is defined as: when the liquid flows at a speed of 1cm/s, the shear stress required on each 1cm2 plane is called dynamic viscosity, and the unit is Pa·s. Viscosity is a property of a fluid. When the fluid flows in the pipeline, there are three states of laminar flow, transitional flow and turbulent flow. These three flow states also exist in the stirring equipment, and one of the main parameters that determine these states is the viscosity of the fluid. During the stirring process, it is generally considered that fluids with a viscosity less than 5Pa/s are low-viscosity fluids, such as water, castor oil, maltose, jam, honey, lubricating oil, heavy oil, low-viscosity emulsion, etc.; fluids with a viscosity of 5-50Pa/s are medium-viscosity fluids, Such as ink, toothpaste, etc.; 50-500Pa/s are high-viscosity fluids, such as chewing gum, plastisol, solid fuel, etc.; more than 500Pa/s are ultra-high-viscosity fluids, such as rubber mixtures, plastic melts, silicones, etc. . For low-viscosity media, a small-diameter high-speed agitator can drive the surrounding fluid to circulate and reach a distant place. This is not the case for fluids with high-viscosity media, which need to be directly driven by a stirrer. The impellers suitable for low-viscosity and medium-viscosity fluids include paddle type, open turbine type, pusher type, long thin blade propeller type, disc turbine type, Bruma gold type, plate frame paddle type, three-blade backward curved type, MIG formula etc. The impellers suitable for high-viscosity and ultra-high-viscosity fluids include ribbon impeller, screw type, anchor type, frame type, propeller type, etc. The viscosity of some fluids changes with the progress of the reaction, so it is necessary to use an impeller suitable for a wide range of viscosity, such as a universal impeller.

At present, an auxiliary stirring part is set on the stirring beam or the stirring shaft, which is mentioned in many documents, and also has certain applications in the industry, such as the stirring device disclosed on August 22, 2012 with the publication number CN102641676A, and the stirring shaft The surface is spiral, and the stirring shaft is covered with a flying disc. The flying disc includes a circular inner ring, a circular outer ring and blades connecting the inner ring and the outer ring. The top of the stirring shaft is connected to the engine through a coupling; The rotation and stirring of the blade, the blade is a conical structure, which further improves the efficiency of stirring, and the arc-shaped blades are evenly arranged around the outer ring. The technical solution of this patent has certain effects, but it has the following disadvantages: the auxiliary The device, inner ring, outer ring, blades and arc-shaped paddles, as can be seen from the drawings, this auxiliary device is basically located on the same plane, and the stirring force for the liquid is mainly concentrated on the top and bottom of this plane. Therefore, the stirring The effect is greatly reduced.

Another patent document, the publication number of which is CN103100345A, is an invention patent published on May 15, 2013. The agitator includes a first blade and an agitator shaft connected to the power output end of the halving device at one end. One end is fixedly connected, and also includes a second blade, a sleeve sleeved on the stirring shaft and sliding along the stirring shaft, and a motor fixed on the stirring shaft. The output end of the motor is connected with a telescopic rod for pushing and pulling the sleeve, and the second blade One end is hinged to the end point of the first blade, and an adjustment rod is hinged between the other end of the second blade and the sleeve; this patent can adjust the stirring position to make the liquid stir evenly, but its blade is short and cannot achieve better stirring , Secondly, the number of second blades is also large, the resistance of stirring is increased, and the cost is increased.

Therefore, aiming at the existing disclosed technology and practical application, this patent aims to propose a new technical solution that overcomes the unsatisfactory stirring effect, long stirring time and high energy consumption of the existing structural design.

Contents of the invention

The invention aims at the deficiencies of the prior art, and provides a stirring device with a stirring plate which has good stirring effect, high stirring efficiency and short stirring time.

Technical solutions

The present invention is realized through the following technical solutions:

A stirring device with a stirring plate, comprising a housing, a motor installed at the center of the bottom of the housing, a stirring shaft vertically installed above the motor, and a stirring beam vertically fixed to the stirring shaft, characterized in that it also includes a stirring plate; The stirring plate is arranged vertically and fixed vertically to the beam; the outer edge of the stirring plate is uniformly provided with sawtooth.

In the stirring device with a stirring plate, the sawtooth is square.

In the stirring device with a stirring plate, the upper part of the stirring plate is a right-angled trapezoidal steel plate, which is embedded and fixed in the cross-section of the stirring beam, and the lower part is a rectangular steel plate.

In the stirring device with stirring plates, at least two stirring plates are arranged on one side of the stirring shaft, and are arranged symmetrically on both sides of the beam, and the stirring plates on the same side of the stirring shaft are arranged in parallel.

In the stirring device with a stirring plate, the distance between the bottom end of the stirring plate and the bottom of the shell is 5mm-10mm.

In the stirring device with a stirring plate, the stirring plate is integrally formed with a steel plate.

Beneficial effect

The stirring device of the present invention has the following remarkable technical effects:

1. With such a structure, multiple stirring plates can fully contact the material, and the edge of the lower half of the stirring plate is provided with sawtooth, so that the stirring around the edge of the stirring body is more sufficient, and the stirring of the material is more uniform;

2. By setting the stirring plate on the stirring beam, the stirring parts are added, and the stirring beam and the stirring plate are stirred at the same time, the number of stirring is increased, and the stirring effect is improved;

3. The upper part of the stirring plate is a right-angled trapezoidal steel plate. The trapezoidal shape makes the stirring have a smooth convection effect, and the stirring effect is enhanced;

4. The distance between the bottom end of the stirring plate and the bottom of the shell is 5cm-10mm, so that the stirring plate fully contacts the stirrer at the bottom of the shell to achieve a better stirring effect;

5. Located on one side of the stirring shaft, at least two stirring plates are arranged in parallel, and rotate along the horizontal direction to tilt towards the side wall of the housing or the stirring shaft; the stirring plates on both sides of the stirring shaft are symmetrically arranged; the stirring plates and the stirring material are enlarged The contact area is larger, the stirring is more sufficient, and the stirring effect is good.

Description of drawings

Fig. 1 is the structural representation of stirring plate and beam part of the present invention;

Fig. 2 is an enlarged schematic view of the sawtooth structure of the present invention.

Among them, 1, stirring beam; 2, stirring plate; 3, sawtooth.

detailed description

In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example 1

A stirring device with a stirring plate, including a housing, a motor installed at the center of the bottom of the housing, a stirring shaft vertically installed above the motor, and a stirring beam 1 vertically fixed to the stirring shaft; it also includes a stirring plate 2, and the two sides of the stirring shaft are respectively arranged At least one stirring plate; the stirring plate is vertically arranged and fixed vertically to the beam; the outer edge of the stirring plate is evenly provided with sawtooth 3; by setting the stirring plate on the stirring beam, a stirring component is added, and the stirring beam and the stirring plate are simultaneously Stirring increases the number of stirring times and improves the stirring effect; the stirring plate is located on the same side of the stirring beam, which increases the contact area between the stirring plate and the stirring material, and the stirring is more sufficient and the stirring effect is good.

Example 2

Further, as shown in FIG. 2, the stirring device with a stirring plate includes a housing, a motor installed at the bottom center of the housing, a stirring shaft vertically installed above the motor, and a stirring beam 1 vertically fixed to the stirring shaft; It also includes a stirring plate 2, two stirring plates are respectively arranged on both sides of the stirring shaft; the stirring plate is vertically arranged and fixed perpendicular to the beam; the outer edge of the stirring plate is evenly provided with sawtooth 3, and the sawtooth is square.

Example 3

Further, a stirring device with a stirring plate includes a housing, a motor installed at the bottom center of the housing, a stirring shaft vertically installed above the motor, and a stirring beam 1 vertically fixed to the stirring shaft; it also includes a stirring plate 2, two stirring shafts At least one stirring plate is arranged on each side; the stirring plate is vertically arranged and fixed vertically with the beam; the outer edge of the stirring plate is uniformly provided with sawtooth 3. The distance between the bottom end of the stirring plate and the bottom of the housing is 6mm, so that the stirring plate Fully contact the stirring material at the bottom of the shell to achieve better stirring effect.

Example 4

Further, a stirring device with a stirring plate includes a housing, a motor installed at the bottom center of the housing, a stirring shaft vertically installed above the motor, and a stirring beam 1 vertically fixed to the stirring shaft; it also includes a stirring plate 2, two stirring shafts At least one stirring plate is arranged on each side; the stirring plate is vertically arranged and fixed vertically with the beam; the outer edge of the stirring plate is uniformly provided with sawtooth 3. The distance between the bottom of the stirring plate and the bottom of the housing is 8mm; The upper part of the stirring plate is a right-angled trapezoidal steel plate, which is embedded and fixed on the cross-section of the stirring beam, and the lower part is a rectangular steel plate, which is integrally formed.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and unless defined as herein, are not to be interpreted in an idealized or overly formal sense Explanation.

Claims (1)

1. A stirring device with a stirring plate, comprising a housing, a motor installed at the center of the bottom of the housing, a stirring shaft vertically installed above the motor, and a stirring beam vertically fixed to the stirring shaft, characterized in that: it also includes a stirring plate; The stirring plate is arranged vertically and fixed vertically to the beam; the outer edge of the stirring plate is evenly provided with sawtooth; the sawtooth is square; the upper part of the stirring plate is a right-angled trapezoidal steel plate, which is embedded and fixed on the cross-section of the stirring beam , the lower part is a rectangular steel plate; at least two stirring plates are arranged on one side of the stirring shaft, and they are arranged symmetrically on both sides of the beam, and the stirring plates on the same side of the stirring shaft are arranged in parallel; the distance between the bottom end of the stirring plate and the bottom of the shell is 5mm-10mm; the stirring plate is integrally formed steel plate.