CN203075950U

CN203075950U - Novel arc stirring paddle for glass lining

Info

Publication number: CN203075950U
Application number: CN 201220749224
Authority: CN
Inventors: 吴民权
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2013-07-24
Anticipated expiration: 2022-12-28

Abstract

The utility model discloses a novel arc stirring paddle for glass lining, belonging to the technical field of chemical equipment. The novel arc stirring paddle consists of a stirring shaft and one or more layers of stirring paddle blades connected to the shaft. The novel arc stirring paddle for the glass lining is characterized in that each layer of stirring paddle blades is formed by fixedly or detachably connecting one or more blades with the stirring shaft; the number of the blades at each layer and rotation diameters of the blades can be equal or unequal; and a central line of any cross section (of each blade) vertical to the radial direction within the radial range is an arc line, can be a central arc line of a hydrofoil cross section, and also can be other arc lines. Compared with an efficient energy-saving glass lining stirring paddle disclosed formerly, the novel arc stirring paddle provided by the utility model is innovated and redesigned structurally, can stir materials with viscosity being 16,000 centipoises or above and having shearing thinning property, and has a better stirring effect for a technology process with relative uniform shearing distribution of materials in a kettle.

Description

A kind of novel enamel arc paddle

Technical field

The utility model relates to the novel enamel arc paddle that a kind of glassed steel reaction vessels is used, and belongs to the technical field of chemical industry equipment.

Background technology

In many industries such as medicine, agricultural chemicals, chemical industry, food, adopt the enamel stirred autoclave in a large number, because its smooth surface, less scaling pollution, and also cheap, receive praises from customers.The core component of stirred autoclave is the paddle that is installed in the still.The quality of paddle performance has determined the quality of stirred tank performance.In the past, in China's enamel industry, because few people specialize in paddle, therefore for a long time, the enamel paddle that China produces mainly is anchor oar, frame oar, also has oar formula oar and vane type oar.These paddles, especially anchor oar and frame oar, power consumption is big and whipping performance is poor.Users wish that urgently performance is arranged, and good novel enamel paddle comes out, and improves the performance of glassed steel reaction vessels, is users' service better.In view of this, the inventor has researched and developed enamel air foil profile axial flow paddle, and has applied for patent " a kind of air foil profile enamel axial flow paddle " (patent No.: ZL03231827.8) in June, 2003.Hauled oneself willingly into since the market, obtained good effect, be subjected to affirming of users.The blade section of this kind paddle is the air foil profile section through appropriate design, can for the material in the reactor provides than anchor oar, the much bigger amount of stirring of frame oar, the interior material of still be mixed fully under identical power consumption.Through production practices in a few years, this kind paddle is applied to many technical process, all obtains good effect.But in application process, also find some deficiency of this paddle, be not suitable for the higher material of ratio of viscosities.The inventor improves the parameter of the air foil profile section of paddle for this reason, makes this kind paddle can be applied to the material that viscosity is up to 12000 centipoises, has expanded the range of application of paddle.And residual stress causes the situation of burst porcelain easily than higher in the baslled iron of producing in view of the method for making the paddle baslled iron at that time, and the inventor has proposed the relatively method of thin baslled iron of the less making of residual stress.The inventor has applied for patent " a kind of high-efficiency and energy-saving type enamel paddle " (patent No. ZL200920068633.0) in March, 2009 for this reason.The application of this kind paddle has also obtained good effect, is subjected to user's welcome and certainly.By this practical application in several years, though the range of application of this kind paddle has enlarged much, but can't be applicable to the material of viscosity greater than 12000 centipoises, and shear the well-proportioned technical process that distributes in the reactor in the liquid material for requiring, mixing effect is also not very good.The inventor if find the structure of paddle and the parameter of blade section are reformed and redesigned, can further enlarge the range of application of this kind paddle through research.We have done following innovation: 1. find in actual applications, stir the higher material of viscosity, and solid suspended and some need shear the technical process relatively uniformly that distributes in the liquid material in reactor, need to substitute the individual layer paddle with the multilayer paddle, just can obtain better mixing effect, the inventor is to the structural parameters of multilayer paddle for this reason, mainly be the ratio S/D of the rotating diameter D of adjacent two layers of paddle interval S and paddle, study, and drawn the scope of this ratio that is applicable to different technical process.2. the parameter to stirrer paddle designs again, makes it to be applicable to the more stirring of high-viscosity material.3. in order to stir more full-bodied material, and solid suspended and other require to shear in the liquid material in reactor and distribute relatively uniformly that technical process obtains better mixing effect, all need to use the paddle of big rotating diameter.But for glassed steel reaction vessels, the medium-sized and large-scale glassed steel reaction vessels of particularly widely applying in the factory, a lot of kettlies itself are closed type structures, the kettle top has only a little hole of diameter to supply the usefulness of enamel paddle installation.And the enamel paddle of China's production at present, its blade all is fixedly connected with being connected of shaft basically, therefore to every layer by two or two paddles that above blade is formed, in order to make paddle pass through installing hole, the size of paddle rotating diameter just is restricted, and to top which floor oar of multilayer paddle, will be subjected to bigger restriction especially, every layer the number of blade the more, the restriction that is subjected to is also bigger.To a lot of technical process above-mentioned, in order to obtain better mixing effect, require to use the paddle of big rotating diameter, and owing to be subject to the diameter of installing hole, the rotating diameter of employed paddle can only be restricted, and has influence on mixing effect.The inventor is through research, for the paddle that makes big rotating diameter can pass through installing hole smoothly, as in case of necessity, the number of blade of every layer of paddle can be designed to a slice, the paddle of big rotating diameter can successfully be installed like this, the out-of-balance force that produces when rotating for balance a slice blade paddle, appropriate location above shaft, identical or the big slightly identical blade of another rotating diameter is installed in the opposite direction again, but second the centrifugal force of balance lower floor paddle generation also can strengthen mixing effect first.This every layer of paddle that has only a blade is a kind of brand-new structure, the paddle that has solved big rotating diameter in enclosed enamel stirred autoclave installation and the problem of application.The inventor sets about from above-mentioned three aspects simultaneously to original axial flow paddle, reform and redesign, solve the more stirring of high-viscosity material, also can form more uniform shearing distribution in the liquid material in reactor, also more helped the operating process that solid suspends simultaneously.

Summary of the invention

The purpose of this utility model is that a kind of novel enamel arc paddle will be provided, this kind enamel paddle is compared with existing enamel axial flow oar: because the structure and the blade parameter of paddle are reformed and redesigned, further raising has been arranged on performance, at 16000 centipoises or above high-viscosity material, make the range of application of paddle that very big expansion arranged applicable to viscosity with shear-thinning property.Also more being applicable to needs to shear in the liquid material in the still technical process relatively uniformly that distributes.

The utility model enamel arc paddle is made up of shaft and the one or more layers of multilayer stirrer paddle that is connected on the axle, every layer is formed by connecting by a slice or the blade more than a slice and shaft, can be fixedly connected, also can be detachable connection; Every layer the number of blade and rotating diameter thereof, can be identical also can be inequality; Blade arbitrary with radially vertical section in radial extension, its section center line is a camber line, it can be the center camber line of air foil profile section, also can be other camber lines.Straight line line between section front end and rear end is called the string c of this section, and the vertical range between center camber line and the string is called the high h ' of arc, and the ratio of the high h ' of arc and chord length c is called the high h of relative arc, and the angle of blade section string and shaft center line claims established angle θ.The detailed description of above-mentioned parameter can be referring to accompanying drawing and description of drawings.To blade tip, the maximal phase of the section of each radius according to different mixing requirements, can be taked different values to high hm of arc and established angle θ etc. from the blade root of blade.Wherein maximal phase is 0%≤hm≤20% to the scope of the high hm of arc, and its optimization range is 1%≤hm≤18%; Blade is 22 °-70 ° in the established angle θ at blade root position scope, and its optimization range is 25 °-60 °; Blade at the established angle θ at blade tip position always more than or equal to the established angle at blade root position.When described paddle is the multilayer paddle, the ratio S/D of the rotating diameter D of the interval S of its adjacent two layers of paddles and paddle has considerable influence to mixing effect, the scope of S/D value is 0.10-2.5, its optimization range is 0.3-2.0, when adjacent two layers of paddle rotating diameter are inequality, calculate the S/D value with bigger rotating diameter.Here the rotating diameter of said paddle refers to the rotate a circle diameter of the formed area of a circle of stirrer paddle.Every layer of blade of multilayer paddle can all be the novel paddle with curved profile, also can form combined multilayer paddle by the paddle of novel paddle with camber section and other types, to adapt to the requirement of different process process to stirring.The relative disc area ratio scope of stirrer paddle is 0.1-1.0, and its optimization range is 0.2-0.85.So-called disc area ratio relatively refers to the ratio of the projected area of every layer of blade on its Plane of rotation inswept disk area when rotating a circle with it.To the multilayer paddle, said here relative disc area ratio refers to the relative disc area ratio of every layer of stirrer paddle.

With the inventor in 2003 disclosed enamel air foil profile axial flow paddle and disclosed high-efficiency and energy-saving type enamel paddle in 2009 compare, the utility model paddle has been done following innovation and improvement: 1. according to for many years application practice, discovery is to the stirring of high-viscosity material and require in the reactor technical process (for example extraction relatively uniformly that distributes of the shearing in the liquid material, suspension polymerisation etc.), also have operating process such as solid suspension, need to substitute the individual layer paddle with the multilayer paddle, just can obtain reasonable mixing effect, in view of the above, the inventor studies an important parameter S/D of multilayer paddle, wherein S is the spacing between adjacent two layers of paddle, and D is the rotating diameter of paddle.To different technical process, the paddle number of plies and the S/D value that are fit to this process are arranged.Adapt to most technical process, the S/D value should be in the scope of 0.1-2.5, and its optimization range is 0.3-2.0.Adjacent two layers paddle, their number of blade and rotating diameter, can be identical also can be inequality, when the rotating diameter of adjacent two layers of blade is inequality, calculate the S/D value with big rotating diameter D value.2. in addition, to the stirring of high-viscosity material, and require to shear the operating process such as technical process and solid suspension relatively uniformly that distributes in the reactor in the liquid material, except need are used the multilayer paddle, also need just reasonable mixing effect can be arranged with the paddle of big rotating diameter.But glassed steel reaction vessels, particularly use a lot of medium-sized and large-scale glassed steel reaction vessels in the factory, it much is the enclosed still, the usefulness that only has a little hole of diameter to supply to install paddle at the still top, the paddle that every layer two leaf and the blade more than two leaves are fixedlyed connected with shaft, in order to make paddle pass through installing hole, its rotating diameter just is restricted, can not be too big, which floor limit bigger to the top one deck of multilayer paddle or the rotating diameter of stirrer paddle especially, because the cause of installing can only adopt the less paddle of rotating diameter, influences mixing effect.The inventor is through research, and for the paddle that makes big rotating diameter can pass through installing hole smoothly, as in case of necessity, the number of blade of every layer of paddle can be designed to a slice, can waltz through the little hole of diameter like this, and the paddle of big rotating diameter is installed.The centrifugal force that produces when rotating for balance a slice blade paddle, appropriate location above shaft, identical or the big slightly identical blade of another rotating diameter is installed in the opposite direction again, but second the centrifugal force that produces of balance lower floor paddle first also can strengthen mixing effect.This every layer of enamel paddle that has only a blade is a kind of brand-new structure, solved the installation question of paddle in enclosed enamel stirred autoclave of big rotating diameter, thereby improved the mixing effect of many technical process.3. the result designs again to the blade section parameter in the light of recent researches: the low viscous liquid material of centering, the section center line be shaped as the center camber line of aerofoil profile the time best results, when material viscosity when higher, discover, when the center camber line of section is selected other camber lines for use, effect is better, cooperates above-mentioned binomial measure again, and this moment, paddle can be used for stirring more full-bodied material.So paddle of the present utility model is referred to as the arc paddle.The center line of blade section can be the center camber line of air foil profile section, also can be other camber lines.Vertical range between the string of blade section center camber line and blade section is called the high h ' of arc, and its ratio with section chord length c is called the high h of relative arc, and maximal phase is 0%≤hm≤20% to the value of the high hm of arc, and its optimization range is 1%≤hm≤18%; The angle of the string of blade section and shaft centreline space is called established angle θ, and the established angle θ at the blade root position is 22 °-70 °, and its optimization range is 25 °-60 °, at the established angle at blade tip position always more than or equal to the established angle at blade root position.Studies show that, take suitable maximal phase to arc height and established angle, structure and big rotating diameter in conjunction with the multilayer paddle, can make paddle be applicable to that viscosity reaches 16000 centipoises or the above material with shear-thinning property, to operating process such as the technical process that requires material in the still to shear to be evenly distributed and solid suspensions, better mixing effect is arranged simultaneously.The inventor further discovers, to the blade section of equal thickness, the influence of the thickness of section comparison whipping performance is little, and therefore not as the important parameter of section, the thickness of blade is mainly by the decision that needs of the strength and stiffness of blade and enamel firing.The blade of the utility model arc paddle can be a hollow section, also can be solid section, and to the blade of hollow section, it is welded by two steel plates, and to the paddle of little rotating diameter, hollow blade also can be flattened by steel pipe and make.The blade of solid section by the steel plate compression moulding that can two-sidedly ward off after enamel firing become fixedly connected paddle, or the paddle that removably connects.

Description of drawings

Shown in Figure 1 is two layers of single leaf paddle schematic diagram of the utility model paddle.

Shown in Figure 2 is two layer of two leaf paddle of the utility model schematic diagram.

Bottom shown in Figure 3 is the utility model two leaf paddles, and last two layers is the utility model list leaf paddle schematic diagram.

Fig. 4 be the utility model stirrer paddle in the radial direction with the schematic diagram of radially vertical hollow section.

Fig. 5 be the utility model stirrer paddle in the radial direction with the schematic diagram of radially vertical solid section.

Fig. 6 is the single leaf paddle schematic diagram of four layers of the utility model paddle.

The combination paddle that to be the utility model paddle 7 form with six traditional leaf disc turbine paddles 8 shown in Figure 7.

The specific embodiment

Further illustrate content of the present utility model below in conjunction with accompanying drawing.

Shown in Figure 1 is two layers of single bladed paddle schematic diagram of the utility model paddle.Lower floor is a single leaf paddle, be that one deck has only a slice blade, its appropriate location, upper end connects the identical or big slightly single leaf paddle of a rotating diameter in the other direction, with centrifugal force in a basic balance or that balance lower floor paddle produces when rotated, and the moment of flexure that axle support place is formed.When technical process needed, single leaf paddle not only can be two layers, also can be four layers, six layers etc.Among the figure, 1 is shaft, and 2 is blade, and 3 is blade tip, and 4 is blade root, and 5 is guide margin, and 6 is lagging edge.

Shown in Figure 2 is the schematic diagram of two layer of two leaf paddle.Shown in Figure 3 is the schematic diagram of the utility model two leaf paddles and two layers of single leaf paddle combination.The number of blade of every layer of paddle should be determined according to the needs of technical process and the possibility of installation and enamel firing.

Fig. 4 be the utility model stirrer paddle in the radial direction with the schematic diagram of radially vertical hollow section.H ' is the arc height of section center camber line among the figure, and c is a chord length, and θ is an established angle.1 is the paddle axle, and 2 is blade, and 5 is the guide margin of blade, and 6 is the lagging edge of blade.

Fig. 5 be the utility model stirrer paddle in the radial direction with the schematic diagram of radially vertical solid section.H ' is the arc height of section center camber line among the figure, and c is a chord length, and θ is an established angle.1 is the paddle axle, and 2 is blade, and 5 is the guide margin of blade, and 6 is the lagging edge of blade.

Fig. 6 is single leaf paddle 7 schematic diagram of four layers of the utility model paddle.S is the distance between adjacent two layers of paddle, and D is the rotating diameter of paddle, and S/D is the important parameter that influences mixing effect.Four layers of paddle 7 shown in Figure 6 are novel paddle and have identical rotating diameter.Spacing among the figure between ground floor and second layer stirrer paddle is identical with spacing between the 3rd layer and the 4th layer of stirrer paddle, and the spacing between the second layer and the 3rd layer of stirrer paddle is bigger.In the paddle of this structure, although the structure of blade itself is the same, adjacent two layers of interlobate S/D, not necessarily identical, decide on the requirement of technical process.

The combination paddle that to be the utility model paddle 7 form with six traditional leaf disc turbine paddles 8 shown in Figure 7.The number of blade of two paddles and rotating diameter are all inequality.In the S/D value, S is the spacing of adjacent two layers of paddle, and D is a rotating diameter, and when the rotating diameter of adjacent two paddles was inequality, the rotating diameter of getting bigger paddle calculated the S/D value.In the example of Fig. 7, the rotating diameter D of novel paddle is big than the diameter D1 of six leaf disc turbine paddles, calculates the S/D value so choose the rotating diameter D of novel paddle.

According to of the different requirements of different process process to stirring, choose the structural parameters and the operating parameter of suitable the utility model paddle, can obtain good mixing effect.Below be an embodiment.

Embodiment 1

The high viscosity liquid hybrid system.

Enamel 6300L enclosed still, 1750 millimeters of still footpath T=Φ.Material peak viscosity 16000 centipoises in the still have shear-thinning property.

Situation 1: adopt three layers of traditional oar formula oar, 720 millimeters of rotating diameter D=Φ, rotational speed N=130rpm.When material became thickness, it just moved near paddle, and material is motionless at a distance from paddle.The carrying out of influence reaction.

Situation 2: adopt the utility model paddle, six layers of single bladed paddle, count from orlop, 960 millimeters of 1 layer, 3 layers 5 layers rotating diameter D=Φ, 1000 millimeters of 2 layers, 4 layers 6 layers rotating diameter D=Φ, the S/D value of adjacent two layers of paddle: the S/D=0.25 of 1-2 layer, 3-4 layer, 5-6 interlayer, the S/D=0.5 of layer 2-3 and 4-5 interlayer, rotational speed N=130rpm.

Because every layer blade can pass through only 600 millimeters hole of diameter when the paddle of big rotating diameter is installed smoothly, the rotating diameter of paddle is big, and the number of plies is many again, in addition the utility model paddle to stir performance good, therefore when material became thickness, material still stirred relatively goodly.Help the carrying out that react.

Claims

1. novel enamel arc paddle, form by shaft and the one or more layers of multilayer stirrer paddle that is connected on the axle, it is characterized in that: every layer is formed by connecting by a slice or the blade more than a slice and shaft, can be fixedly connected, also can be detachable connection; Every layer the number of blade and rotating diameter thereof, can be identical also can be inequality; Described stirrer paddle arbitrary with radially vertical section in its radial extension, its section center line is a camber line, it can be the center camber line of air foil profile section, also can be other camber lines; When described paddle was the multilayer paddle, the scope apart from S and the ratio S/D value of paddle rotating diameter D between adjacent two layers of paddle was 0.10-2.5, when adjacent two layers of paddle rotating diameter are inequality, calculated the S/D value with bigger rotating diameter.

2. novel enamel arc paddle according to claim 1 is characterized in that: the maximal phase of described blade section center camber line is 0%≤hm≤20% to the scope of the high hm of arc, and optimization range is 1%≤hm≤18%; Described blade is 22 °-70 ° in the established angle θ scope at position, blade root place, and optimization range is 25 °-60 °; Blade at the established angle at blade tip position always more than or equal to the established angle at blade root position.

3. novel enamel arc paddle according to claim 1, it is characterized in that: when described paddle is the multilayer paddle, the optimization range apart from S and the ratio S/D value of paddle rotating diameter D between adjacent two layers of paddle is 0.3-2.0, when adjacent two layers of paddle rotating diameter are inequality, calculate the S/D value with bigger rotating diameter.

4. novel enamel arc paddle according to claim 1, it is characterized in that: the relative disc area ratio scope of described stirrer paddle is 0.1-1.0, its optimization range is 0.2-0.85, to the multilayer paddle, said here relative disc area ratio refers to the relative disc area ratio of every layer of stirrer paddle.