CN101507905A - Combined solid-liquid agitating device for large-size reactor and storage tank - Google Patents

Combined solid-liquid agitating device for large-size reactor and storage tank Download PDF

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Publication number
CN101507905A
CN101507905A CNA2009100302477A CN200910030247A CN101507905A CN 101507905 A CN101507905 A CN 101507905A CN A2009100302477 A CNA2009100302477 A CN A2009100302477A CN 200910030247 A CN200910030247 A CN 200910030247A CN 101507905 A CN101507905 A CN 101507905A
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CN
China
Prior art keywords
agitator
shaft
solid
storage tank
helix
Prior art date
Application number
CNA2009100302477A
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Chinese (zh)
Inventor
刘雪东
刘文榉
张智宏
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江苏工业学院
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Priority to CNA2009100302477A priority Critical patent/CN101507905A/en
Publication of CN101507905A publication Critical patent/CN101507905A/en

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Abstract

The invention discloses a combined solid-liquid stirring device for a large reaction kettle or a large storage tank, which comprises a motor, a speed reducer, a roof support and a shaft joint, wherein the lower end of a stirring shaft is positioned at the central bottom of a cylinder; a stirrer is arranged on the stirring shaft; the upper end of the stirring shaft is connected with the motor and the speed reducer on the outside of the cylinder through the shaft joint; a bottom seal head is fixed at the bottom of the cylinder; the stirring device adopts an upper and lower combined type; the stirring shaft is hollow; an anchor stirrer is arranged at the lower end of the stirring shaft; a scraping rake is arranged on the anchor stirrer; and a helix ribbon type stirrer is arranged on the stirring shaft on the upper part of the anchor stirrer. The helix ribbon type stirrer has the function of lifting materials, avoids quick settlement of solid materials, and makes a mixture of solid phase and liquid phase more uniform; and the anchor stirrer can loosen bottom solid deposit, reduce the concentration of the solid phase above a bottom outlet of the reaction kettle or the storage tank, and is convenient for the exhaust of the materials. The combined solid-liquid stirring device has good stirring effect, and can be used in the mixing or reaction process of solid-liquid materials with high viscosity and high solid material content.

Description

A kind of large-size reactor and storage tank combined solid-liquid agitating device
Technical field
The present invention relates to a kind of agitating device, be particularly related to a kind of combined solid-liquid agitating device that is applicable to that high viscosity fluid mixes, can be used for large-size reactor, storage tank or other solid-liquid mixing apparatus, to realize the even mixing and the reaction of solid-liquid two phase materials under the high viscosity, be particularly useful for the reaction unit or the storage device of solid-liquid two-phase in oil and the chemical industry.
Background technology
The mixing and the reaction problem of solid-liquid material or high sticking material often run in petrochemical industry, biology, medication chemistry, even mixing and the scattering problem of solid phase in liquid phase, especially abundant mixing in large-size reactor or storage tank and reaction problem are the prerequisites that guarantees the quality of production.Because the complexity of process, and the uncertainty of installing geometry, material properties etc., for example the high viscosity solidliquid mixture makes the even mixing of solid-liquid two-phase become difficult.The ideal state of solid-liquid two phase reaction is to realize the suspended state of solid particle, and this needs higher speed of agitator to realize, to avoid the rapid subsidence of solid particle.But for tun equipment, higher speed of agitator will cause the amplification of significantly improving of transmission power and shaft 6 diameters, and will be extremely uneconomical for engineering application and device fabrication.Along with the continuous development of agitating device production technology, the maximization day by day of device needs the novel efficiently agitator of design, reaches the purpose that improves solid-liquid two-phase mixing efficiency.For inconsistent solid-liquid two-phase, the skewness that the decline of solid particle causes has had a strong impact on the reaction rate and the efficient of solid-liquid two-phase, even causes the deposition of solid phase at the bottom of jar, makes agitating device ineffective.The key that addresses this problem is exactly can produce stronger axial flow in agitator tank, forms circular flow up and down in jar, reaches the purpose that promotes that the solid-liquid two-phase fully contacts and reacts.
For solid suspension problem involved in the solid-liquid two phase reaction, promptly solve the sinking problem of solid particle in reaction or the mixed process.Mentioned several sludge proof measures in " the anti-deposition facility of large-scale phosphoric acid storage tank " (" phosphoric acid design " first phase in 1999) literary composition, related to the method that agitator is installed, but do not see in large-scale groove jar and adopt.Huge transmission device, agitator and supporting member thereof make troubles for maintenance, installation, and cost is higher.In " design of large storage tank agitating device " (" Chemical Engineer " third phase in 2003) literary composition,, realized the even stirring in complete jar in large-scale storage tank by three quant formula agitators have been installed after the reasonable disposition.Obviously, the mixing effect of this method can guarantee, but this method is brought certain difficulty for the installation and the driving of agitator; And when material viscosity increased, quant formula agitator more was difficult to satisfy the stirring requirement.
Be to solve the even mixed problem of high-viscosity material, publication number is that the Chinese patent literature of CN 2592265Y discloses the utility model patent that name is called " agitator ", and novel agitator as shown in Figure 8 is provided in this patent.This agitator comprise frame back timber (L), U type framework and around the outer upstanding edge (A) of framework, with the uniform pitch hand of helix to the right or spiralling left hurricane band (B, C).This agitator has been avoided " pole-climbing " phenomenon of whipping process material, thereby well stirs and dispersed material.For small-sized reactor, this kind agitator can well be realized mixing effect, but, stirring state for the solid-liquid two-phase system in large-size reactor or the storage tank, because the ribbon of this kind agitator part and framework are positioned near the tank skin substantially, have only the material of tank skin near zone to obtain stirring, so that the material of tank body centre is difficult to realize the even stirring of solid-liquid two-phase, the solid particle settling velocity is accelerated, and causes the bulk deposition of solid particle in territory, jar base area.When if the outlet of tank body is positioned at tank base, also can cause the outlet obstructing problem of material.When tank bottoms material bulk deposition, solid-liquid two phase materials can't fully be contacted and be reacted; Especially, when material viscosity is higher, the mixing effect that existing mixing plant is difficult to realize ideal in large-size reactor or storage tank.
Summary of the invention
Technical problem to be solved by this invention is: for the whipping process in large-size reactor or the storage tank, under high viscosity or high solids content situation, because no obvious axial flow in jar, high viscosity fluid or solid-liquid two-phase mixture can't realize evenly mixing and fully reaction.For overcoming the deficiency of above-mentioned technology, the invention provides a kind of large-size reactor and storage tank combination high-efficiency solid-liquid agitating device up and down.
The technical solution used in the present invention is: the lower end that comprises motor and decelerator, top-support, shaft coupling, shaft is positioned at the cylindrical shell centre bottom, agitator is installed on shaft, the upper end of shaft is by the motor and the decelerator of shaft coupling connecting cylinder external body, the cylindrical shell bottom is bottom (head) fixedly, described agitating device is a combined type up and down, shaft is hollow shaft, anchor agitator is installed in the shaft lower end, install on the anchor agitator and scrape rake, on the shaft on anchor agitator top, helix(ribbon type) agitator is installed.
The invention has the beneficial effects as follows:
1) can be used for the mixing or the course of reaction of the solid-liquid material of viscosity higher, higher solids material content in operation under the slow-speed of revolution, satisfy under the situation that stirs purpose, power consumption is little, and the operation fault is few, the operation quality height.Its production cost is low, processing, easy for installation.
2) in conjunction with the advantage of anchor agitator and helix(ribbon type) agitator, formation circulates up and down.Helix(ribbon type) agitator can produce axial flow, has improved the axial velocity of outlet top fluid, has played the effect that promotes material, has avoided the rapid sedimentation of solid material, makes that the mixing of solid-liquid two-phase is more even.Anchor agitator can produce radial flow, solid deposits bottom can loosening, reduced the solid concentration of reactor or tank bottom outlet top, be convenient to the discharging of material, overcome owing to the higher outlet blockage problem that causes of outlet top solid concentration, make that the mixing of large-size reactor and tank inside solid-liquid two-phase is more even, prolonged the suspension time of solid-phase material, improved stirring efficiency.
3) compare with simple anchor agitator, efficient combined-type agitator of the present invention shortens incorporation time or reaction time to a certain extent, has improved the ability to work of large-size reactor and storage tank greatly, and energy consumption there is no obvious increase.
4) the hollow shaft of shaft is satisfying under the situation of strength condition, reduces the ribbon thickness of the helix(ribbon type) agitator on top as far as possible, has alleviated the weight of whole agitating device.
5) design of two blades of anchor agitator of the present invention is carried out type selecting according to container bottom end socket cross sectional shape, adapts to anchor formula class agitator, helical-ribbon type lift agitator and the support bar and the pull bar etc. of different autoclave body bottom structures.Material outlet is positioned at container bottom, avoids agitating device unstability even fracture to occur because of producing bigger moment of torsion when rotating.But scrape the solid particle of rake disturbance pot bottom deposition, prevent the bulk deposition of solid particle and cause the outlet of bottom to stop up, prevent that the underflow discharging is not smooth, and can prevent to increase problem because of the mud resistance of scraping that solid particle sediment excessive concentration in the still causes.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail;
Fig. 1 is a structural representation of the present invention, and wherein bottom (head) 12 cross sections are taper;
Fig. 2 is anchor agitator 11 structure charts of the bottom (head) 12 cross sections correspondence when oval among Fig. 1;
Fig. 3 is anchor agitator 11 structure charts of the correspondence when being linear of bottom (head) 12 cross sections among Fig. 1;
Fig. 4 is the combiner figure of single helix(ribbon type) agitator 8 and anchor agitator 11 among Fig. 1;
Fig. 5 is the combiner figure of double ribbon agitator 8 and anchor agitator 11 among Fig. 1;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is the structural representation of taper anchor agitator 11 among Fig. 1;
Fig. 8 is that publication number is that CN2592265Y, name are called the patent structure schematic diagram of " agitator " in the background technology.
Among the figure: 1. motor and decelerator; 2. top-support; 3. upper cover; 4. bearing; 5. shaft coupling; 6. shaft; 7. cylindrical shell; 8. helix(ribbon type) agitator; 9. support bar; 10. slide fastener or pull bar; 11. anchor agitator; 12. bottom (head); 13. sludge outlet; 14. scrape rake.
The specific embodiment
As shown in Figure 1, whole agitating device is a combined type up and down, and the upper end of large-size reactor or storage tank is a standard oval upper cover 3, and top-support 3 is installed on upper cover 3 tops, is cylindrical tube 7 in the centre, and cylindrical shell 7 bottoms are bottom (head) 12 fixedly.Sludge outlet 13 is driveed on bottom bottom (head) 12.The combined solid-liquid agitating device of cylindrical shell 7 inside comprises anchor agitator 11 and top and helix(ribbon type) agitator 8 two parts of bottom.
The lower end of shaft 6 is positioned at cylindrical shell 7 centre bottom, and helix(ribbon type) agitator 8 is installed on shaft 6, and the upper end of shaft 6 connects the motor of cylindrical shell 7 outsides and the power transmission shaft of decelerator 1 by shaft coupling 5 rigidity.In order to alleviate the weight of top-support 2, shaft 6 adopts hollow shaft, and the material of hollow shaft 6 and agitator will be selected according to material characteristic in the jar, if meet Korrosionsmedium, can select stainless steel for use.
At shaft 6 lower ends fixed installation anchor agitator 11, anchor agitator 11 has two blades, these two blades are connected on the shaft 6 with pull bar 10 respectively, fix by the mode that increases pull bar 10, avoid agitating device when rotating, unstability even fracture to occur because of producing bigger moment of torsion.The bottom of anchor agitator 11 installs scraping of certain inclination angle additional harrows 14, scraping rake 14 makes as Fig. 5, strip shown in Figure 6, and according to the welding of certain inclination angle or utilize Bolt Connection to be installed on the anchor agitator 11, scrape mainly acting as of rake 14: remove the part high-viscosity material of piling up at jar end, be convenient to the discharging of material, and can prevent to increase problem, promote mixing effect to a certain extent because of the mud resistance of scraping that solid particle sediment excessive concentration in the still causes.Anchor agitator 11 can be made hollow type, to alleviate the weight of whole agitating device.Helix(ribbon type) agitator 8 is installed on the shaft 6 on anchor agitator 11 tops, and employing support bar 9 is connected between helix(ribbon type) agitator 8 and the hollow shaft 6.Bottom (head) 12 cross sectional shapes that are fixed on cylindrical shell 7 bottoms can be taper, ellipse or linear, thus, the shape of 11 two blades of anchor agitator of installing near bottom (head) 12 should with the corresponding cooperation of bottom (head) 12 cross sectional shapes, be that the shape of 11 two blades of anchor agitator is respectively taper or ellipse as shown in Figure 2, perhaps linear as shown in Figure 3 as shown in Figure 1.
Helix(ribbon type) agitator 8 is made removable structure, so that installation, maintenance and dismounting.Ribbon is partly selected stainless steel for use.Helix(ribbon type) agitator 8 can be as shown in Figure 4 single helical-ribbon type or two helical-ribbon types as shown in Figure 5 and Figure 6 and bull helix(ribbon type) agitator 8.
The lift portion of helix(ribbon type) agitator 8 is positioned at sludge outlet 13 tops of possum belly just, impels material generation axial flow vertically upward when it rotates with shaft 6, has played the effect that promotes material, has avoided the rapid subsidence of solid particle.Make the ribbon diameter of helix(ribbon type) agitator 8 greater than the bore of sludge outlet 13, so that the discharge of sludge outlet 13 top materials simultaneously.
Implementing when of the present invention, tackling hollow shaft 6 and carry out torsional deflection and check, and determine hollow shaft 6 size, the weight of whole agitating device is adjusted, determine to meet the bearing capacity of top-support 2.Calculate and definite motor and decelerator 1 power demand.The present invention is satisfying under the situation of strength condition, reduces the ribbon thickness of the helix(ribbon type) agitator 8 on top as far as possible, and bottom anchor agitator 11 can make hollow type, can alleviate the weight of whole agitating device.Drain for the ease of material, the sludge outlet 13 of large-size reactor or tank bottom should be positioned under the ribbon part of helix(ribbon type) agitator 8.
The present invention under stirring motor and decelerator 1 drives, co-rotation under the slow-speed of revolution, in jar material can for low, in or high viscosity fluid, solid content reaches as high as 35%.The main effect of the helix(ribbon type) agitator 8 on top is to produce stronger axial flow vertically upward in jar, forms to circulate up and down, plays the effect that promotes the solid-liquid mixing efficiency.The anchor agitator 11 of bottom mainly act as the solid particle of disturbance pot bottom deposition, prevents the bulk deposition of solid particle and causes the sludge outlet 13 of bottom to stop up, and produces certain axial flow vertically upward simultaneously.Helix(ribbon type) agitator 8 can be made fraction block structure, so that install.The direction of rotation of helix(ribbon type) agitator 8 is most important, single helix(ribbon type) agitator 8 as shown in Figure 4, it is opposite that the direction of rotation of agitating device is set at the direction that rises with belt screw, select correct direction of rotation can guarantee that the rotation of ribbon self plays the effect that upwards promotes material, in jar, produce axial flow upwards.For double ribbon agitator 8 or bull helix(ribbon type) agitator 8 as shown in Figure 5, its direction of rotation is necessary identical with the direction that belt screw rises.The race diameter of helix(ribbon type) agitator 8, pitch and highly can design according to cylindrical shell 7 sizes.

Claims (7)

1, a kind of large-size reactor or storage tank combined solid-liquid agitating device, comprise motor and decelerator (1), top-support (2) and shaft coupling (5), the lower end of shaft (6) is positioned at cylindrical shell (7) centre bottom, go up the installation agitator at shaft (6), the upper end of shaft (6) connects cylindrical shell (7) outside motor and decelerator (1) by shaft coupling (5), cylindrical shell (7) bottom is bottom (head) (12) fixedly, it is characterized in that: described agitating device is combined type up and down, shaft (6) is hollow shaft, anchor agitator (11) is installed in shaft (6) lower end, anchor agitator (11) is gone up to install and is scraped rake (14), goes up at the shaft (6) on anchor agitator (11) top helix(ribbon type) agitator (8) is installed.
2, a kind of large-size reactor according to claim 1 or storage tank combined solid-liquid agitating device, it is characterized in that: bottom (head) (12) cross sectional shape is taper, linear or ellipse, and the shape of (11) two blades of anchor agitator is corresponding with described bottom (head) (12) cross sectional shape.
3, a kind of large-size reactor according to claim 1 or storage tank combined solid-liquid agitating device is characterized in that: two blades of anchor agitator (11) connect shaft (6) with pull bar (10).
4, a kind of large-size reactor according to claim 1 or storage tank combined solid-liquid agitating device is characterized in that: be connected support bar (9) between helix(ribbon type) agitator (8) and shaft (6).
5, a kind of large-size reactor according to claim 1 or storage tank combined solid-liquid agitating device is characterized in that: the helix(ribbon type) agitator (8) that is installed on the shaft (6) is detachable single helical-ribbon type, two helical-ribbon type or bull helical-ribbon type structure.
6, a kind of large-size reactor according to claim 1 or storage tank combined solid-liquid agitating device is characterized in that: the ribbon diameter of helix(ribbon type) agitator (8) is greater than the bore that is positioned at the sludge outlet (13) on the bottom (head) (12).
7, a kind of large-size reactor according to claim 5 or storage tank combined solid-liquid agitating device is characterized in that: the direction of rotation of single helix(ribbon type) agitator (8) is opposite with the direction that belt screw rises; The direction of rotation of double ribbon agitator (8) or bull helix(ribbon type) agitator (8) is identical with the direction that belt screw rises.
CNA2009100302477A 2009-03-23 2009-03-23 Combined solid-liquid agitating device for large-size reactor and storage tank CN101507905A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102029138A (en) * 2010-10-29 2011-04-27 张家港市德宝化工有限公司 Polymerizing kettle
CN102350289A (en) * 2011-08-08 2012-02-15 金发科技股份有限公司 Reaction kettle for producing static material not easy to flow and use method thereof
CN102532504A (en) * 2011-12-16 2012-07-04 化学工业第二设计院宁波工程有限公司 Synthetic reaction kettle suitable for preparation of carbon dioxide-epoxypropane copolymer
CN101733036B (en) * 2010-02-05 2012-08-08 江苏工业学院 Agitating device bottom of which is provided with special-shaped baffle plates
CN103464030A (en) * 2013-08-21 2013-12-25 中国恩菲工程技术有限公司 Stirring tank
CN105060437A (en) * 2015-08-18 2015-11-18 铜陵海陵环保科技有限责任公司 Polymeric ferric sulfate feeding device for sewage treatment
CN106040138A (en) * 2016-06-28 2016-10-26 广西众昌树脂有限公司 Low-vibration reaction kettle
CN109589860A (en) * 2018-12-20 2019-04-09 甘肃达云环境科技有限公司 A kind of highlands sewage treatment chemicals dosing plant

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101733036B (en) * 2010-02-05 2012-08-08 江苏工业学院 Agitating device bottom of which is provided with special-shaped baffle plates
CN102029138A (en) * 2010-10-29 2011-04-27 张家港市德宝化工有限公司 Polymerizing kettle
CN102350289A (en) * 2011-08-08 2012-02-15 金发科技股份有限公司 Reaction kettle for producing static material not easy to flow and use method thereof
CN102350289B (en) * 2011-08-08 2014-03-12 金发科技股份有限公司 Reaction kettle for producing static material not easy to flow and use method thereof
CN102532504A (en) * 2011-12-16 2012-07-04 化学工业第二设计院宁波工程有限公司 Synthetic reaction kettle suitable for preparation of carbon dioxide-epoxypropane copolymer
CN103464030A (en) * 2013-08-21 2013-12-25 中国恩菲工程技术有限公司 Stirring tank
CN103464030B (en) * 2013-08-21 2016-04-13 中国恩菲工程技术有限公司 Tank diameter
CN105060437A (en) * 2015-08-18 2015-11-18 铜陵海陵环保科技有限责任公司 Polymeric ferric sulfate feeding device for sewage treatment
CN106040138A (en) * 2016-06-28 2016-10-26 广西众昌树脂有限公司 Low-vibration reaction kettle
CN109589860A (en) * 2018-12-20 2019-04-09 甘肃达云环境科技有限公司 A kind of highlands sewage treatment chemicals dosing plant

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Open date: 20090819