CN101310848A - Rotary autoclave - Google Patents
Rotary autoclave Download PDFInfo
- Publication number
- CN101310848A CN101310848A CNA2008100734828A CN200810073482A CN101310848A CN 101310848 A CN101310848 A CN 101310848A CN A2008100734828 A CNA2008100734828 A CN A2008100734828A CN 200810073482 A CN200810073482 A CN 200810073482A CN 101310848 A CN101310848 A CN 101310848A
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- Prior art keywords
- autoclave
- rotating shaft
- kettle
- motor
- transmission component
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Abstract
The invention discloses a rotating high-pressure autoclave which is used for crystal growth in a hydrothermal method. The autoclave body is connected with a rotating device which can cause the axial rotation of the autoclave body. The rotating device comprises an electromotor, and a transmission component and a rotation axis which are connected with the electromotor. The rotation axis and the autoclave body are coaxially arranged, mutually connected and can coaxially rotate. The electromotor drives the rotation axis to rotate through the transmission component. Under the action of inertia and friction force, liquid in a reaction chamber of the high-pressure autoclave moves and the motion functions as stirring, thus not only causing the liquid stream on the same horizontal level and the temperature in the autoclave body to tend to accord, but also causing the liquid between a solution area and a crystalline area to generate forced convection. The forced convection is beneficial to the exchange of energy and solute in the solution area and the crystalline area so as to effectively increase the uniformity of liquid stream of various parts in the autoclave and improve the stability of a temperature field, thus improving the growth quality of crystals.
Description
(1) technical field:
The present invention relates to a kind of autoclave, particularly a kind of rotary autoclave that is used for the hydro-thermal method crystal growth.
(2) background technology:
What the Hydrothermal Growth crystal generally adopted at present is temperature difference hydro-thermal method, and employed capital equipment is an autoclave.Autoclave is a sealing, but the container of high temperature high voltage resistant is dissolve area and crystal region according to its internal-response chamber of arts demand by a barrier partitions.Plate washer is outwards pressed certain way by the center, has many apertures, and this plate washer has regulating and controlling effect to the convection current of solution.The autoclave reaction chamber is become crystal region and dissolve area by the with holes current control plate washer is separated, there are the temperature difference in crystal region and dissolve area, the temperature difference makes the kettle top and the bottom form convection current, the saturated solution of dissolve area is transported to crystal region and forms metastable supersaturation solution, metastable supersaturation solution becomes unsaturated solution and is back to dissolve area again after separating out the part solute on the seed crystal, dissolve compost again, so circulation comes and goes, and seed crystal is grown up gradually.But in above-mentioned device, autoclave leaves standstill, and the intervention of no external force effect only relies on the inner faint temperature difference and concentration convection current to carry out transporting of matter and energy, thus have thermograde at crystal region, convection current is inhomogeneous and warm problem such as instability.Special when the metastable supersaturation narrow range, because convection current is inhomogeneous, a temperature instability, cause solute Distribution inhomogeneous easily, thereby some position at crystal region very easily forms local supersaturation, cause spontaneous nucleation to be difficult to control, twin is easily grown, and has greatly destroyed the quality of crystal.Existing solution is to flow control device as the notification number of on January 31st, 2007 bulletin in the disclosed a kind of autoclave of Chinese invention patent of CN1297694C, because this is at dissolve area to flow control device and crystallizing range is provided with external axial surface of revolution type flabellum and the circular cone tube substitutes the plane plate washer, and attached several small baffles turning to.The power of the convection current that the temperature difference that dependence is inner faint and concentration produce is impacted flow control device is made it rotation, and this of rotation further deepened the convection current in space to flow control device, but this device remains no external force effect intervention, and is therefore limited to the improvement effect of liquid stream.
(3) summary of the invention:
For solving above-mentioned deficiency, the present invention discloses and a kind ofly can improve the stability of temperature in the autoclave and the uniformity rotary autoclave of solution convection current effectively.
The rotary autoclave that the present invention is designed comprises kettle, and its difference is: be connected with one on the described kettle and make the axially whirligig of rotation of kettle.When crystal growth, regulate the rotating speed of autoclave as required and turn to, make that the autoclave of original location can be according to certain program speed change rotation.Under the effect of inertia and frictional force, liquid in the autoclave reaction chamber produces motion, the effect of stirring is played in this motion, makes that not only liquid stream, the temperature on the interior same horizontal plane of kettle reaches unanimity, and also makes liquid produce the convection current that forces at dissolve area and crystallizing range.This convection current that forces helps the exchange of dissolve area and crystal region energy and solute, has effectively improved the uniformity of inner each the position liquid stream of kettle, puies forward the stability of high-temperature field, thereby improves the growth quality of crystal.
Described whirligig can have various ways, wherein a kind of mode preferably is, whirligig comprises motor, the transmission component that is connected with motor and rotating shaft, rotating shaft and the coaxial setting of kettle, but rotating shaft links to each other with kettle and coaxial rotation, and motor rotates by transmission component driven rotary axle.
The set-up mode of described rotating shaft can for, rotating shaft is arranged at the lower end or the upper end of kettle, an end of rotating shaft links to each other with kettle, this end that links to each other with kettle is provided with boss, boss and autoclave body bottom or the groove that the top was provided with fasten.The size of boss and groove is just coincide, and rotating shaft rotating band dynamic high-pressure still rotates synchronously.
As improvement, but also be connected with the speed changer that follow procedure is set its rotating speed and turned between described motor and the transmission component.Motor Drive speed changer rotation by the setting of speed changer, makes the rotating shaft transmission component that is attached thereto drive autoclave and does following motion by the program of setting: quicken clockwise, at the uniform velocity or the discontinuity rotation; Quicken counterclockwise, at the uniform velocity or the discontinuity rotation; Alternately rotate clockwise and counterclockwise; Quicken, at the uniform velocity or alternately rotation etc. of discontinuity.
Described transmission component comprises belt and the belt pulley that cooperatively interacts, and belt pulley links to each other with the rotating shaft of whirligig, and an end of belt links to each other with belt pulley, and the other end links to each other with speed changer.
Can set rotation by follow procedure for the direction of motion and the rotating speed that make autoclave, described motor is a reversing motor.
Rotatable autoclave device of the present invention is compared with existing autoclave, not only solve the dissolve area and the crystallizing range two interval interior uneven phenomenons of convection current of the autoclave crystal growing apparatus existence of leaving standstill, and effectively solved the generation that is positioned at problem such as a thermograde and a temperature instability on the same horizontal plane in the same interval, thereby more help the raising of crystal overall quality.
(4) description of drawings:
Fig. 1 is a kind of example structure schematic diagram of rotary autoclave of the present invention.
Description of drawings: 1 autoclave; 2 body of heater seats; 3 belt pulleys; 4 rotating shafts; 5 bearing supports; 6 drive stands; 7 motor; 8 speed changers; 9 belts; 10 grooves; 11 boss.
(5) specific embodiment:
The rotary autoclave 1 that present embodiment is designed as shown in Figure 1, comprises the kettle that is positioned on the body of heater seat 2, the bottom of kettle is provided with a groove 10, rotating shaft 4 is arranged at the below of kettle, and the upper end of rotating shaft 4 is provided with boss 11, and the set groove 10 of boss 11 and autoclave body bottom fastens.Rotating shaft 4 extends to the below of body of heater seat 2 from the top of body of heater seat 2, and is movably installed on the bearing support 5 by bearing.A side that is positioned at body of heater seat 2 belows of rotating shaft 4 is fixed with a transmission component by the key connection.Described transmission component comprises belt 9 and belt pulley 3.Present embodiment belt pulley 3 and rotating shaft 4 interlocks, and by linking to each other with motor 7 with V belt 9 that belt pulley 3 matches.The other end of belt pulley 3 and motor 7 interlocks that are positioned on the drive stand 6.For carrying out program setting with turning to, also be connected with a speed changer 8 between described belt 9 and the motor 7 to the rotating speed of autoclave 1.Speed changer 8 is carried out program setting, make rotating mechanism drive autoclave 1 and do clockwise acceleration, at the uniform velocity or the discontinuity rotation; Quicken counterclockwise, at the uniform velocity or the discontinuity rotation; Alternately rotate clockwise and counterclockwise; Quicken, at the uniform velocity or alternately rotation of discontinuity.The motor 7 of present embodiment is preferably selected for use has the reversing motor 7 that two directions of motion are arranged.Above-mentioned motor 7, speed changer 8, transmission component and rotating shaft 4 have constituted one jointly makes autoclave 1 make the whirligig of axial rotation.
The working method of present embodiment gained rotary autoclave 1 is as follows: 8 rotations of motor 7 drive speed transmission, in advance speed changer 8 is carried out rotating speed and the program setting that turns to, speed changer 8 drives rotating shaft 4 rotations that have pulley concial disk 3 by belt 9, and speed changer 8 and rotating shaft 4 are rotations synchronously.Boss 11 on another end face of rotating shaft 4 fastens with the groove 10 of autoclave 1 bottom, and the size of boss 11 and groove 10 is just coincide, and rotating shaft 4 rotating band dynamic high-pressure stills 1 rotate synchronously.When crystal growth, can regulate the rotating speed and the direction of speed changer 8 as required, make that location autoclave 1 can be according to certain program speed change rotation.Because the effect of inertia and frictional force makes that the liquid in autoclave 1 reaction chamber produces motion, the effect of stirring is played in this motion, makes liquid produce the convection current that forces.
Claims (6)
1, rotary autoclave comprises kettle, it is characterized in that: be connected with one on the described kettle and make the axially whirligig of rotation of kettle.
2, rotary autoclave according to claim 1, it is characterized in that: described whirligig comprises motor (7), the transmission component that is connected with motor (7) and rotating shaft (4), rotating shaft (4) but with the coaxial setting of kettle and coaxial rotation, motor (7) rotates by transmission component driven rotary axle (4).
3, rotary autoclave according to claim 2, it is characterized in that: the set-up mode of described rotating shaft (4) is, rotating shaft (4) is arranged at the lower end or the upper end of kettle, one end of rotating shaft (4) links to each other with kettle, this end is provided with boss (11), and boss (11) and autoclave body bottom or the groove (10) that the top was provided with fasten.
4, according to claim 2 or 3 described rotary autoclaves, it is characterized in that: also be connected with the speed changer (8) that to regulate its rotating speed and turn between described motor (7) and the transmission component.
5, according to 4 described rotary autoclaves in the claim, it is characterized in that: described transmission component comprises belt (9) and the belt pulley (3) that cooperatively interacts, belt pulley (3) links to each other with the rotating shaft (4) of whirligig, one end of belt (9) links to each other with belt pulley (3), and the other end links to each other with speed changer (8).
6, according to 5 described rotary autoclaves in the claim, it is characterized in that: described motor (7) is a reversing motor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100734828A CN101310848A (en) | 2008-02-28 | 2008-02-28 | Rotary autoclave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100734828A CN101310848A (en) | 2008-02-28 | 2008-02-28 | Rotary autoclave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101310848A true CN101310848A (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100734828A Pending CN101310848A (en) | 2008-02-28 | 2008-02-28 | Rotary autoclave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101310848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830497A (en) * | 2010-05-20 | 2010-09-15 | 同济大学 | Supergravity hydrothermal preparation method of spherical inorganic powder grains |
-
2008
- 2008-02-28 CN CNA2008100734828A patent/CN101310848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830497A (en) * | 2010-05-20 | 2010-09-15 | 同济大学 | Supergravity hydrothermal preparation method of spherical inorganic powder grains |
| CN101830497B (en) * | 2010-05-20 | 2012-06-06 | 同济大学 | Supergravity hydrothermal preparation method of spherical inorganic powder grains |
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Open date: 20081126 |