CN1230682A - Multifunctional vacuum drying oven and its using method - Google Patents
Multifunctional vacuum drying oven and its using method Download PDFInfo
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- CN1230682A CN1230682A CN 99103304 CN99103304A CN1230682A CN 1230682 A CN1230682 A CN 1230682A CN 99103304 CN99103304 CN 99103304 CN 99103304 A CN99103304 A CN 99103304A CN 1230682 A CN1230682 A CN 1230682A
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Abstract
The vacuum drying oven is especially suitable for drying and grinding material by vacuum heating, inside which, there is a installed rotating member and a subsidiary case connected airtightly to the main case. When the motor inside the subsidiary case is started, the shaft of the rotating member is driven to rotate material bottle for drying and grinding. Compared with available technology, the equipment has the features of no material caking, no oxidation, safe ball grinding, convenient operation, etc.
Description
The invention belongs to vacuum drying baking oven apparatus field.Be specially adapted to material and under the heating in vacuum state, carry out the baking oven of drying or ball milling.
Existing vacuum drying oven comprises a cylindrical or cube casing, and casing has bleeding point and air inlet, and bleeding point directly is connected on the vavuum pump, perhaps is connected on aspiration column or the drying tower and then receives on the vavuum pump.On the upper and lower sidewall of the periphery of round box or square box, heating element heater is housed.Be divided into several layers by horizontal grate in the casing, the material disc that holds material is placed on the grid, closes chamber door, vacuumizes with pump, then, starts heating element heater, carries out heat drying.But this vacuum drying oven has a defective, be exactly, in the heating in vacuum process,, be difficult for material is stirred or stirs owing to be under the vacuum sealing state in the casing, feasible heating of result and dehydration are even inadequately, lower floor's dehydration does not have the upper strata abundant, and, be very easy to cause hardening, luming of material, not only make the dehydration difficulty, and be difficult to keep material in desired granularity.
The a conventional oven that is used for constant pressure and dry, there is not vacuum system, thereby when material is heated, can open chamber door easily, stir or stir material, make homogeneous heating, and prevent to harden, but owing to dry under vacuum, do not carry out, can't process that those fusing points are low, dehydration is difficult, perhaps under hot state to air-sensitive and material that need vacuum dehydration.
Best solution to defective in the prior art is exactly can make material rotate simultaneously or stir vacuum drying, with the purpose that reaches even heating and prevent to lump.But, realize this point, exist one not allow the problem of avoiding, be exactly that vacuum and rotation are difficult to unification, if the power (as the output of motor output shaft) that material rotates or stirs is from outside the vacuum chamber, the rotating shaft of transferring power and the difficult sealing between the casing to be to reach so, and be especially bigger in range of temperature, under the bigger situation of conjugant heat expansion; If rotate or stir power from the vacuum chamber, be placed in the drying box as motor, so also exist the problem that motor can't operate as normal, because, motor can not at high temperature be worked, and the heat that motor self produces can't dissipate, and will soon scrap because of coil punctures, and motor is set in vacuum tank also influences Temperature Distribution in the casing, be unfavorable for the even processing of material.
Existing ball-grinding machine is that the swivelling pipe of interior dress processing materials and abrasive material rotates in juxtaposed rotating shaft, utilizes the rolling of abrasive material to clash into comminuting matter.But; processing some during to the active material of air or moisture-sensitive; because material is under roll rotation and continuous bump; temperature raises; specific surface increases, and activity also becomes greatly, easy and air or reaction of moisture; even blast; so before ball milling, must in swivelling pipe, feed inert protective gas, and cover lid completely; the dress of material is got also and must be carried out in glove box; even so, intraductal atmospheric pressure also can significantly be different from ambient pressure behind end of operation; when uncap, cause danger.And this method also can't be carried out thermal dehydration to material in ball mill grinding.
The objective of the invention is to propose a kind of material and under rolling condition, carry out the effective baking oven of vacuum, drying, heating and the using method of this baking oven.
In order to reach purpose of the present invention, the invention provides a kind of vacuum drying oven, can in dried material under the vacuum, rotate or stir material, it comprises: pedestal; Be fixed on the main box that is provided with heating element heater and temperature element on the pedestal its; The vacuum system that links to each other with main box; Be used to control the electric-control system of temperature element, vavuum pump and heating element heater; And the auxiliary box body of built-in motor and variable-speed motor.Horizontally disposed revolving member is installed in the main box, and revolving member is installed on the framework by several shaft parallels and forms, and these rotating shafts are interconnected by actuated element, make them to rotate synchronously.Auxiliary box body is attached to the outside of main box, and be tightly linked by an opening and main box, be provided with motor and variable-speed motor in the auxiliary box body, the opening that power transmission passes between main box and the auxiliary box body is applied to the power of motor output in the rotating shaft of revolving member, make these rotating shafts rotate synchronously, also have coolant jacket on the auxiliary box body sidewall, be used to take away the heat that motor produces and make motor can continue to work reposefully.Like this, when the cylindrical material bottle that material is housed was placed between the adjacent shafts, the rotation of motor just can drive bottle for material and rotate, and then reached the purpose of rotating or stirring material in the bottle for material.Because main box and auxiliary box body are tightly linked mutually, the power transmission course can not influence the vacuum of system, so just can realize purpose of the present invention, promptly in the dried material, rotates or stir material under vacuum.
Can describe example of the present invention in detail below in conjunction with accompanying drawing.Accompanying drawing 1 is the perspective view of vacuum drying oven of the present invention; Accompanying drawing 2 is revolving member plan structure schematic diagrames in the bake oven device of the present invention; Accompanying drawing 3 is cross-sectional view of auxiliary box body in apparatus of the present invention; Accompanying drawing 4 is the structural representations along bake oven device A-A section of the present invention, and this figure has illustrated in main box and auxiliary box body the form that connects between the revolving member and motor and variable-speed motor.In the accompanying drawings, 1 is bake oven device of the present invention, and 2 is main box, 3 is auxiliary box body, and 4 is automatically controlled part, and 5 is pedestal, 6 is supporting leg, and 7 is chamber door, and 8 is watch window, 9 is last heating element heater, and 10 are following heating element heater, and 11 is revolving member, 12 is driven shaft, and 13 is driving shaft, and 14 is driven sprocket, 15 is driven chain, and 16 is drive sprocket, and 17 is the active chain, 18 is the auxiliary box body interface, and 19 is ring flange, and 20 is motor, 21 is variable-speed motor, and 22 is cooling sandwith layer, and 23 is framework, 24 variable-speed motor sprocket wheels, 25 are the rotating shaft installing hole, 26 inner bag bottom surface openings, and 27 is the inner bag bottom surface.
Be described in detail with reference to the accompanying drawings below, vacuum of the present invention, dry, the composition of abrasive dust and heated oven device is that heating element heater 9 and following heating element heater 10 are housed in main box 2, automatically controlled part 4 is housed below main box 2, and join by supporting leg 6 and pedestal 5, vacuumized part also connects with main box 2 simultaneously, sealed attachment auxiliary box body 3 is answered in the outside that it is characterized in that main box 2, in main box 2, on the heating element heater 10 revolving member 11 is installed down, inner bag bottom surface opening 26 is arranged on the inner bag bottom surface 27 of main box 2 simultaneously, motor 20 and variable-speed motor 21 are housed in the auxiliary box body 3,, equidirectional with fast rotation by the driven sprocket on the driving shaft 13 14 again by the variable-speed motor sprocket wheel on the variable-speed motor 21 24 by all driven shafts 12 that driven chain 15 drives in the revolving members 11 by the drive sprocket 16 on the active chain 17 drive driving shafts 13.The further feature of this device should be equipped with a driving shaft 13 and one or more driven shaft 12 is housed at least in addition on the framework 23 of revolving member 11.
1 can find out with reference to the accompanying drawings, and vacuum drying oven integral body of the present invention should be 1, this device be by main box 2, auxiliary box body 3 and vacuum section do not show, automatically controlled part 4 and pedestal 5 etc. constitute.Main box 2 can be square or cuboid, and is fixed on the pedestal 5 by supporting leg 6.Main box 2 comprises inner bag, shell, chamber door 7 etc. in this device.Inner bag is the casing of an opening, is preferably that stainless steel makes, and weld seam wants strictness to carry out Leakage Test, and shell is the casing of an opening, is enclosed within the inner bag outside, be filled with insulation material between shell and the inner bag.Chamber door 7 pivot couplings are on shell, and around the joint of chamber door 7 when closing and between the inner bag, the sealing strip that silicon rubber and so on is housed is used for sealing, and the chamber door center can stud with the best watch window of being made by withstand voltage heavy wall glass plate 8.In inner bag, the place of pressing close to upper and lower wall is separately installed with upper and lower heating element heater 9,10, and the upper horizontal of following heating element heater 10 is placed with revolving member 11.Upper and lower heating element heater 9,10 can be the upper and lower heating plate that stainless steel is made, each stainless steel heating plate is to be made by two corrosion resistant plates of upper and lower butt joint, resistive heater is equipped with in the centre, by the insulating materials electric insulation of micarex and so on, the lead outlet box is external between resistive heater and the corrosion resistant plate.Obviously, heating element heater also can adopt carbon selenium rod etc.; Heating element heater also can only be installed one, but considers the equilibrium of the temperature in the casing, preferably adopts the heating element heater more than.
As shown in Figure 2, revolving member 11 is made of framework 23, driving shaft 13, a plurality of driven shaft 12, driven chain 15 and driven sprocket 14 etc.Framework 23 be by four blocks of angle steel be bonded into square, the base of angle steel is bonded with each other, be fixed on down on the heating element heater 10, on the vertical edge of front and back angle steel rotating shaft installing hole 25 is arranged respectively, driving shaft 13 and driven shaft 12 are inserted in respectively in each rotating shaft installing hole 25, be parallel to each other, rotating shaft installing hole 25 places preferably are equipped with the bearing (not shown), so that the rotation of rotating shaft (comprising driving shaft 13 and driven shaft 12), bearing is preferably made by the stephanoporate oil-retaining bearing alloy that the good lubrication effect is at high temperature also arranged, a kind of replacement scheme for the centre have through hole the polytetrafluoroethylene (PTFE) piece as bearing, the two ends of driving shaft 13 and driven shaft 12 are inserted in the through hole.
As shown in Figure 2, after an end of each driven shaft 12 passes through hole, continue to extend an end, the end is equipped with a driven sprocket 14.And the end of driving shaft 13 extends slightly longlyer than driven shaft 12, and it top except sprocket wheel 14 is installed also is equipped with a drive sprocket 16.Each driven sprocket 14 links to each other on same plane and by driven chain 15.Like this, by the actuated element of being formed by driven sprocket 14 and driven chain 15, each rotating shaft that comprises driving shaft 13 and driven shaft 12 is rotated synchronously.Obviously, one of skill in the art can understand, in this equipment, can adopt other actuated elements to substitute driven sprocket 14 and driven chain 15, for example, adopt gear as actuated element, promptly, can reach the purpose that transferring power is rotated each rotating shaft synchronously equally at the terminal pitch wheel of installing of rotating shaft.
As shown in Figure 1, auxiliary box body 3 closely links to each other with main box 2 attached to the below of main box 2.Position relation between main box 2 and the auxiliary box body 3 will be described below.
Referring to Fig. 3 and Fig. 4, auxiliary box body 3 roughly is columniform, there is an auxiliary box body interface 18 that makes progress its side, link together with the opening 26 on the main box inner bag bottom surface 27, that is to say that auxiliary box body interface 18 and opening 26 peripheries weld together, auxiliary box body 3 by solder attachment on main box 2, certainly, also can be by other fixtures attached on the main box 2.There is a ring flange 19 outer end of auxiliary box body 3, when ring flange 19 is sealed up, auxiliary box body 3 is exactly a completed cases that only communicates with main box 2, be consistent in its internal pressure and the main box 2, by ring flange 19 places a motor 20 and variable-speed motor 21 can be installed in auxiliary box body 3, the outer wall of auxiliary box body 3 is double-deck, intermediate course is a cooling sandwith layer 22, it is as water(-cooling) jacket, be used to take away the heat that produces when motor rotates, the output of variable-speed motor 21 is equipped with variable-speed motor sprocket wheel 24, drive sprocket 16 on the driving shaft 13 of this variable-speed motor sprocket wheel 24 and revolving member 11 in one plane, each other with active chain 17 connections of passing the odd-side interface 18 of opening 26 on the inner bag bottom surface 27 and auxiliary box body 3, like this, when motor 20 rotates, to drive driving shaft 13 rotates, since the driven sprocket 14 on the driving shaft 13 again with each driven shaft 12 on driven chain 15 connections of driven sprocket 14 usefulness, like this, driving shaft 13 and each driven shaft 12 that the rotation of motor 20 will drive on the revolving member 11 rotate together, variable-speed motor sprocket wheel 24, initiatively chain 17 and drive sprocket 16 are formed power transmission, power is delivered to driving shaft 13 from motor 20 reaches to driven shaft 12.
Certainly, it will be appreciated by those skilled in the art that, auxiliary box body also can be positioned at the top or the side of main box 2, power is delivered to driving shaft 13 and also can realizes by other modes to the process of driven shaft 12 from motor, for example gear drive, or driving shaft 13 is directly installed on the output shaft of motor, at this moment, auxiliary box body 3 is positioned at main box 2 rear sides, motor output shaft and driving shaft 13 be (certainly, the position of auxiliary box body interface 18 and inner bag opening 26 also will be adjusted accordingly) on same straight line.
Lay a cylindrical material bottle between per two rotating shafts adjacent on the revolving member, place material in the bottle, obviously the rotation of rotating shaft will drive the bottle for material rotation, and then make a bottle interior material turning.
Because auxiliary box body 3 closely is connected with main box 2 by opening 18,26, and the outer end has the ring flange 19 that is used to seal, so when system vacuumized, the existence of auxiliary box body 3 can not influence the interior vacuum of main box 2.
Above-mentioned rotation vacuum drying oven has whirligig, can rotate or stir material in dried material under the vacuum.
Because motor 20 is placed in the auxiliary box body 3, can fully be cooled off by cooling sandwith layer 22, so can continuous firing.And the existence of cooling sandwith layer 22 can not influence the Temperature Distribution in the main box 2 yet.
Introduce use and production method that the present invention rotates the vacuum drying oven device below.
First kind of using method is to adopt rotation vacuum drying oven of the present invention that graininess or granular material are carried out the vacuum drying processed, it may further comprise the steps: the one or more cylindrical material bottle that material will be housed is placed on adjacent rotating shaft (12 on the revolving member 11 in the main box 2,13) between, close the chamber door 7 of main box 2, start vacuum system, when vacuum reaches predetermined value in the main box 2, start heating element heater (9,10), open the condensed water that leads to cooling sandwith layer 22, connect motor 20 power supplys then, the power of motor 20 outputs drives the rotating shaft rotation by power transmission like this, and then bottle for material is rotated, thereby stir material, so just reached the purpose of in process of vacuum drying, stirring material, not only make drying more even, and prevent the material caking effectively, make dry materials abundant, and keep the granularity of requirement.
The bottleneck of bottle for material can be coverd with suitable material, the effect of these materials is, can allow steam overflow, prevent that simultaneously the material powder from shedding, enter in the pump and influence the operate as normal of pump that material therefor requires the ability uniform temperature, contaminated material not again simultaneously, according to desired heating-up temperature and material performance, powder size, can suitably select joint filling material, as asbestos cloth, glass cloth, grenadine etc.
The rotating speed of its bottle for material should be controlled at 1-20 rev/min when adopting vacuum drying oven device of the present invention to prepare dry powder, and optimum drying material rotating speed is 1-5 rev/min.
Adopting the another kind use production method of vacuum exsiccator device of the present invention is as ball-grinding machine.The bottle for material that material and ball milling material at first will be housed is placed between the adjacent shafts, close chamber door, start vacuum system, when vacuum reaches predetermined value in the main box, starter motor, open the condensed water that leads to cooling sandwith layer simultaneously, start heating element heater and (also can not start heating element heater, only carry out the vacuum ball milling), like this motor output power drive rotating shaft by power transmission and rotate, and then bottle for material is rotated, material and abrasive material that the rotation of bottle for material drives again wherein rotate, and reach the purpose of comminuting matter by the rolling bump of abrasive material.
Require the rotating speed of bottle for material higher during ball milling, preferably reach 5-300 rev/min, best rotational speed of ball-mill should be 80-200 rev/min, and when high speed rotating, the friction of the bump of abrasive material gets final product comminuting matter, meanwhile, also can carry out heating in vacuum.This moment, the bottle for material opening part preferably sealed suitable material, as glass cloth etc., make gas to pass through, and the material powder can't pass through.
After process finishing, stop heating and rotation, stop to vacuumize, by vacuum system bubbling air in main box, remove vacuum, can open chamber door, take out material.And for the biologically active prod that needs blanketing with inert gas; only need the inert gas steel cylinder is attached on the vacuum system; just can in main box, charge into inert gas easily,, material be carried out inert gas shielding as nitrogen, argon gas, carbon dioxide etc. by vacuum system.
Abrasive material can be hard materials such as steel ball, glass marble.
This using method of vacuum drying oven of the present invention; can be under the vacuum drying environment ball mill grinding material; be particularly useful for the active material of ball milling to air and moisture-sensitive; as metal hydride, hydrogen storage material etc.; and; after ball milling finishes, can carry out inert gas shielding to material easily.
Therefore the present invention rotates vacuum drying oven compared with prior art, have the following advantages: it can be in the process of vacuum drying material, stir material, make dry materials even, and maintenance certain particle, be suitable for processing that those fusing points are lower, being easy to lump needs to keep simultaneously the material of certain particle size again, and those are easy to lump or harden and to the active material of air-sensitive.And existing vacuum drying chamber obviously is unsuitable for processing such material.
Owing to drive the motor 20 that material rotates, be installed in the auxiliary box body 3, can carry out cooling separately and fully to it, and not influence the Temperature Distribution in the main box 2, help the preparation of material, and guarantee that motor 20 can not burn because of dispelling the heat.Simultaneously, owing to be tightly linked between auxiliary box body 3 and the main box 2, the process of revolving member 11 transferring power of the motor 20 from auxiliary box body 3 in main box 2 can not cause the reduction of system vacuum yet, adopts present technique, in the material process, the system vacuum degree can reach below 30 handkerchiefs.In addition, equipment of the present invention can also be used as the vacuum drying ball-grinding machine, because its ball milling carries out under vacuum, obviously with respect to general milling equipment, it is more suitable for processing those active materials to water or air-sensitive.And after ball milling finishes, can also carry out inert gas shielding to active material easily.
Use embodiment one:
When the aluminium powder that drying is reduced from solution, adopt present device, aluminium powder is carried out vacuum drying, its concrete grammar as previously mentioned, do not repeat them here, following table is to adopt common normal pressure baking oven, vacuum drying oven and the present invention to rotate the effect contrast of the dry reduction of vacuum drying oven aluminium powder, and wherein the bottle for material rotating speed is 10 rev/mins.
| Temperature (℃) | Time (minute) | Vacuum (Pa) | Effect | |
| Common normal pressure baking oven | 200 | 30 | The rapid oxidation of aluminium powder and go bad (oxygen under the Yin Gaowen in the ingress of air) | |
| Vacuum drying oven | 200 | 30 | 50 | Harden in the top layer, lower floor's moisture can't be removed |
| The rotation vacuum drying oven | 200 | 30 | 50 | Dry fully, fast, non-oxidation, phenomenon hardens |
Use-case two:
LaNi
5Be a kind of active hydrogen storage material, to air and moisture-sensitive.Can use the ball mill grinding of this equipment, with steel ball grinding material LaNi
5Put into bottle for material, be placed in the main box, use the preceding method ball milling, rotational speed of ball-mill is 110 rev/mins, and ball milling can be used argon shield after finishing easily.Heat drying material simultaneously not only during ball milling, and since in vacuum tank ball milling, bottleneck only needs cover with the poromeric material glass cloth, pressure and ambient pressure are consistent in the bottle for material.Also be convenient to inert gas saturated after the process finishing.
And during with traditional ball-grinding machine ball milling, be in being full of the glove box of inert gas with LaNi
5Pack in the cylindrical stainless steel cylinder, airtight with the stainless steel lid, ball milling on the general milling machine still takes out material, complicated operation in glove box after the ball milling then, and, since the activity of material, during ball milling, must be airtight, behind the ball milling in the stainless steel cylinder pressure and the external world have pressure differential, easily cause danger when taking out material.
Obviously, using present device adopts this method to pulverize LaNi
5Safer and simpler.
Below schematically described most preferred embodiment of the present invention, obviously under the situation that does not deviate from the present invention's spirit and principle, can improve, change it and displacement on an equal basis.
Claims (6)
1, a kind of can vacuum, dry, abrasive dust and heated oven device, the composition of its this device is that heating element heater (9) and following heating element heater (10) are housed in main box (2), adorn automatically controlled part (4) in the bottom of main box (2), and join by supporting leg (6) and pedestal (5), vacuumize partly and also link with main box (2) simultaneously, it is characterized in that answering sealed attachment auxiliary box body (3) in the outside of main box (2), in main box (2), revolving member (11) is installed on the following heating element heater (10), simultaneously on the inner bag bottom surface (27) of main box, inner bag bottom surface opening (26) is arranged, motor (20) and variable-speed motor (21) are housed in the auxiliary box body (3),, equidirectional with fast rotation by the driven sprocket (14) on the driving shaft (13) again by the variable-speed motor sprocket wheel (24) on the variable-speed motor (21) by all driven shafts (12) that driven chain (15) drives in the revolving member (11) by the drive sprocket (16) on active chain (17) the drive driving shaft (13).
2,, it is characterized in that a driving shaft (13) should being housed and one or more driven shaft (12) being housed at least in the framework (23) of revolving member (11) according to the described device of claim 1.
3,, it is characterized in that the shell of auxiliary box body (3) should be made double-deck water cooling interlayer (22) according to the described device of claim 1.
4, a kind of using method that adopts vacuum drying heated oven device, its this method is that the bottle for material that material will be housed earlier is placed between the upward adjacent rotating shaft (12,13) of the interior revolving member of main box (2) (11), close chamber door (7), when being evacuated down to predetermined value, the energising heating, and water flowing cooling and connection motor (20), rotate bottle for material by revolving member (11) and reach the purpose of rotating material, the rotating speed of bottle for material should be at 1-20 rev/min when it is characterized in that dried material, and the rotating speed of bottle for material should be at 5-300 rev/min during the ball milling material.
5,, it is characterized in that being that the rotating speed of optimum drying material is 1-5 rev/min according to the described method of claim 4.
6,, it is characterized in that being that the rotating speed of best ball milling material is 80-200 rev/min according to the described method of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99103304 CN1111713C (en) | 1999-03-15 | 1999-03-15 | Multifunctional vacuum drying oven and its using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99103304 CN1111713C (en) | 1999-03-15 | 1999-03-15 | Multifunctional vacuum drying oven and its using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1230682A true CN1230682A (en) | 1999-10-06 |
| CN1111713C CN1111713C (en) | 2003-06-18 |
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ID=5271216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99103304 Expired - Fee Related CN1111713C (en) | 1999-03-15 | 1999-03-15 | Multifunctional vacuum drying oven and its using method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1111713C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962485A (en) * | 2010-08-27 | 2011-02-02 | 中国林业科学研究院林产化学工业研究所 | Later-stage pulverizing process for water-soluble gardenia yellow pigment stock solution and device used thereby |
| CN102709216A (en) * | 2012-06-05 | 2012-10-03 | 无锡市瑞达电子有限公司 | Vacuum drying oven for processing HMDS (Hexamethyl Disilazane) |
| CN103353211A (en) * | 2013-06-18 | 2013-10-16 | 陈仲礼 | Multifunctional ceramic dryer |
| CN103572667A (en) * | 2012-07-26 | 2014-02-12 | 苏州宏久航空防热材料科技有限公司 | Quick and thorough drying device and method for wet processed glass wool core material |
| CN103954117A (en) * | 2014-04-01 | 2014-07-30 | 中国电子科技集团公司第四十八研究所 | Electric heating plate for vacuum drying oven |
| CN109253585A (en) * | 2018-08-31 | 2019-01-22 | 广西那坡县翠株园林业科技有限公司 | A kind of camellia oleifera fruit baking room |
| CN113898862A (en) * | 2021-11-05 | 2022-01-07 | 山东鼎益粉末冶金有限公司 | Vacuum oil injection device and method for oil-retaining bearing |
-
1999
- 1999-03-15 CN CN 99103304 patent/CN1111713C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962485A (en) * | 2010-08-27 | 2011-02-02 | 中国林业科学研究院林产化学工业研究所 | Later-stage pulverizing process for water-soluble gardenia yellow pigment stock solution and device used thereby |
| CN102709216A (en) * | 2012-06-05 | 2012-10-03 | 无锡市瑞达电子有限公司 | Vacuum drying oven for processing HMDS (Hexamethyl Disilazane) |
| CN102709216B (en) * | 2012-06-05 | 2016-04-13 | 无锡市瑞达电子科技有限公司 | A kind of being used for processes the vacuum drying oven of HMDS |
| CN103572667A (en) * | 2012-07-26 | 2014-02-12 | 苏州宏久航空防热材料科技有限公司 | Quick and thorough drying device and method for wet processed glass wool core material |
| CN103353211A (en) * | 2013-06-18 | 2013-10-16 | 陈仲礼 | Multifunctional ceramic dryer |
| CN103954117A (en) * | 2014-04-01 | 2014-07-30 | 中国电子科技集团公司第四十八研究所 | Electric heating plate for vacuum drying oven |
| CN103954117B (en) * | 2014-04-01 | 2017-02-15 | 中国电子科技集团公司第四十八研究所 | Electric heating plate for vacuum drying oven |
| CN109253585A (en) * | 2018-08-31 | 2019-01-22 | 广西那坡县翠株园林业科技有限公司 | A kind of camellia oleifera fruit baking room |
| CN113898862A (en) * | 2021-11-05 | 2022-01-07 | 山东鼎益粉末冶金有限公司 | Vacuum oil injection device and method for oil-retaining bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1111713C (en) | 2003-06-18 |
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