CN114777424A - Rapid drying equipment and method for silica sol shell - Google Patents
Rapid drying equipment and method for silica sol shell Download PDFInfo
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- CN114777424A CN114777424A CN202210498099.7A CN202210498099A CN114777424A CN 114777424 A CN114777424 A CN 114777424A CN 202210498099 A CN202210498099 A CN 202210498099A CN 114777424 A CN114777424 A CN 114777424A
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- 238000001035 drying Methods 0.000 title claims abstract description 135
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000009489 vacuum treatment Methods 0.000 claims abstract description 6
- 238000005429 filling process Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005495 investment casting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/042—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying articles or discrete batches of material in a continuous or semi-continuous operation, e.g. with locks or other air tight arrangements for charging/discharging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/003—Handling, e.g. loading or unloading arrangements for articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a silica sol shell rapid drying device and a method, wherein the device comprises a drying bin, the drying bin is provided with an inlet and an outlet, the inlet and the outlet are both provided with bin doors, a suspension mechanism for suspending a shell, a driving mechanism for driving the suspension mechanism to move, a vacuum mechanism capable of carrying out vacuum treatment on the drying bin, a heating mechanism capable of heating the drying bin, a ventilation mechanism capable of ventilating, and an inspection mechanism capable of inspecting the temperature and humidity in the drying bin are arranged in the drying bin; the method comprises a filling process, a drying process and a workpiece taking process. The equipment has the advantages of relatively simple structure, convenient use, rapid drying of the shell, high strength of the dried shell and stable product quality, and the silica sol shell dried by the equipment and the method has short drying period which can be controlled within 16 hours, and is 1/5 of the traditional drying time.
Description
Technical Field
The invention relates to the technical field of wax mold drying, in particular to silica sol shell rapid drying equipment and a silica sol shell rapid drying method.
Background
At present, in investment casting of nonferrous alloys, stainless steel, high-temperature alloys and the like internationally, a silica sol shell is the first choice, the silica sol is a binder commonly used for investment casting, and is a stable colloidal solution formed by dispersing amorphous silica microparticles in water, the silica sol is convenient to use, the coating stability is good, the shell does not need chemical hardening, the supply and demand are simple, the shell has high shell high-temperature strength and high-temperature deformation resistance, and the prepared shell has good high-temperature performance and high size precision.
However, silica sols have the disadvantage that they have poor wetting properties with respect to the wax pattern, so that surfactants are also required to improve the coating spreadability. In addition, the drying speed of the silica sol shell is full, the wet strength of the shell is low, and the shell manufacturing period is long.
But at present there is not the better mode to carry out quick drying, in order to provide its drying rate, I have developed a quick drying equipment, enter from this one end, under the mutual effect of technological parameters such as certain pressure, temperature, carry out a cycle drying inside, just can satisfy the operation requirement after coming out.
The current research direction of the silica sol shell quick-drying technology is mainly to change the commonly known quick-drying glue of a silica sol additive aiming at the silica sol, so that the silica sol is dried more quickly than the common silica sol, but the quick-drying silica sol is expensive and 3 to 4 times as expensive as the common silica sol, the quick-drying effect is not ideal, only 1/4 shell making periods are shortened, and the economic benefit is not obvious.
At present, each silica sol shell has about 8 layers, the common drying process needs at least 5-6 days for complete drying, and the drying period is too long, thereby affecting the production efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a quick drying device and a method for a silica sol shell, aiming at the defects in the prior art, the device has a relatively simple structure, is convenient to use, can quickly dry the shell, has high strength of the dried shell and stable product quality, and the silica sol shell dried by the device has a short drying period which can be controlled within 16 hours and is 1/5 of the traditional drying time.
The technical scheme includes that the quick drying equipment for the silica sol shell comprises a drying bin, wherein the drying bin is provided with an inlet and an outlet, bin doors are arranged at the inlet and the outlet, a suspension mechanism for suspending a shell, a driving mechanism for driving the suspension mechanism to move, a vacuum mechanism capable of carrying out vacuum treatment on the drying bin, a heating mechanism capable of heating the drying bin, a ventilation mechanism capable of carrying out ventilation, and an inspection mechanism capable of inspecting the temperature and humidity in the drying bin.
Preferably, the drying bin is in an annular barrel shape, bin doors are arranged at two ends of the drying bin through communication, and sealing gaskets are arranged on the bin doors.
Preferably, the drying chamber is internally or/and externally provided with an annular reinforcing ring for reinforcing the strength of the drying chamber.
Preferably, a actuating mechanism for driving suspension mechanism removes includes the track, be equipped with the crossbeam that can move along the track in the track, the crossbeam passes through the cooperation of sprocket and chain and moves along the track, the track cross-section is one side open-ended C type structure, the crossbeam tip inserts in the track opening, be equipped with the bearing between crossbeam and the track, the bearing suit is inserted the track open-ended tip at the crossbeam, the bearing is located orbital C type inslot.
Preferably, the bearing inner ring is sleeved on the cross beam, the bearing outer ring rolls along the inner surface of the track, a driven sprocket is further arranged at the end part, inserted into the opening of the track, of the cross beam, the driven sprocket and the bearing are arranged in parallel, the driven sprocket is located in a C-shaped groove of the track, a gap is formed between the sprocket and the inner wall of the track, a chain is arranged in the gap, the driven sprocket is located on the inner side of the bearing, and the bearing is close to one side of the opening of the C-shaped groove of the track.
Preferably, the track includes two, and the annular setting is at the both ends of crossbeam, be equipped with a plurality of crossbeam on the track, the chain way of homonymy becomes annular wire-wound connection after arranging the driven sprocket on the crossbeam in proper order, still includes driving motor, the last drive sprocket that is equipped with of driving motor, drive sprocket can drive the chain and remove.
Preferably, the hanging mechanism for hanging the shell comprises a hook, the hook is sleeved on the cross beam, and the hook and the cross beam are in clearance fit.
Preferably, the vacuum mechanism capable of vacuum-treating the drying chamber includes a vacuum generator, and the vacuum generator is communicated with the inside of the drying chamber through a pipeline.
Preferably, the heating mechanism capable of heating the drying bin comprises electromagnetic heaters arranged in the drying bin, and the electromagnetic heaters are uniformly arranged in the drying bin.
As the preferred, the mechanism of taking a breath that can take a breath includes the air-blower, the air-blower passes through pipeline and the inside UNICOM of dry storehouse, be equipped with the control valve on the pipeline between air-blower and the dry storehouse.
Preferably, the inspection means capable of inspecting the temperature and humidity in the drying compartment includes a temperature sensor and a humidity sensor provided in the drying compartment.
A method for drying a silica sol shell by using silica sol shell rapid drying equipment comprises a filling process, a drying process and a workpiece taking process.
1, the filling step: and opening a bin gate of the feeding port, hanging the silica sol shell to be dried on a hook, manually operating a driving motor, conveying the beam on which the silica sol shell is hung inwards, and conveying the hook on which the silica sol shell is not hung outwards until the silica sol shell is completely hung.
2, the drying step: closing a feed inlet bin door, locking and sealing, starting a vacuum generator, setting the pressure of vacuum degree in a drying bin to be 0.06-0.08MPa, utilizing an electromagnetic heater to raise the temperature in the bin body to 22 +/-2 ℃, starting a driving motor, automatically operating the driving motor, keeping the continuous uniform rotation, keeping the operating speed of a silica sol shell in the drying bin to be 0.02m/s, utilizing a temperature detection device to control the temperature in the drying bin, stopping the electromagnetic heater when the temperature is raised to 24 ℃, working again when the temperature is lower than 20 ℃, ensuring that the temperature in the drying bin is constant at 22 ℃, stopping the vacuum generator when a humidity sensor detects that the relative humidity of the drying bin is 70%, starting a control valve and an air blower to discharge the internal humidity outwards, discharging dry air again, and when the humidity sensor detects that the relative humidity of the drying bin is 50%, and (4) closing the control valve and the blower, restarting the vacuum generator, keeping the pressure in the drying bin at 0.06-0.08MPa, and stopping the electromagnetic heater when the electromagnetic heater heats the drying bin to 22 ℃ and continuously works for 2 hours in a repeated way.
3, a pickup procedure: firstly stopping working of the electromagnetic heater, stopping working of the vacuum generator, opening the control valve and the air blower, exchanging air in the drying bin with external control, simultaneously cooling the silica sol shell by using air cooling, closing the control valve and the air blower when the temperature in the drying bin reaches 22 ℃, opening the discharge port bin gate, taking down the silica sol shell from the hook, manually controlling the driving motor to work, moving the beam internally hanging the silica sol shell outwards until all the silica sol shells are taken down, and closing the discharge port bin gate.
The beneficial effects of the technical scheme are as follows: by utilizing the equipment, the electromagnetic heating mechanism is arranged in the vacuum tank, the electromagnetic heating mechanism uniformly heats the shell of the suspension wire in the movement process of the suspension wire, water is quickly evaporated under low vacuum, the temperature and humidity monitoring mechanism monitors that a certain value is reached in the vacuum chamber, the control system automatically stops the electromagnetic heating system, the exhaust system is opened to communicate the vacuum chamber with the atmosphere, after the water in the vacuum chamber is exhausted, the temperature and humidity reach a set value, the control system switches on the vacuum pump, and the power supply of the electromagnetic heating system performs the next drying period until the shell is dried.
The silica sol shells are dried thoroughly, the phenomenon of silica sol redissolution does not exist, the strength of the solid silica sol shells is higher than that of the common drying process, each silica sol shell has about 8 layers, the drying period of each layer of shell is about 1.5 hours, and therefore, the drying time of each 8 layers of silica sol shells is about 12 hours, and the auxiliary time is about 16 hours, so that the method is revolutionary change for investment precision casting, and has huge economic and social benefits.
This transmission structure adopts the circular orbit as the orbit, and inside is equipped with can be along orbital motion's crossbeam, hangs the silica sol type on the crossbeam, through a periodic removal, realizes the drying, because inside temperature, pressure etc. of drying equipment set up and adopt motor drive's chain drive mode, and equipment stability is strong, is convenient for maintain and maintain. Equipment self adopts revolution mechanic, gets into from one end, and the other end comes out for the crossbeam that hangs the silica sol type can get back to initial position voluntarily, and interval is invariable between the adjacent silica sol type, prevents the dry effect subalternation problem that extrusion or local temperature are inhomogeneous to lead to.
Drawings
Fig. 1 is a schematic structural view of a silica sol shell rapid drying apparatus.
Fig. 2 is a schematic view of a driving mechanism for driving the suspension mechanism to move (only one side rail is shown).
Fig. 3 is a schematic view of a mounting structure of the inner cross beam of the track in fig. 1.
Fig. 4 is a schematic diagram of electrical connection between the PLC controller and each component.
Detailed Description
For convenience of explanation, the silica sol type drying transmission mechanism in the die casting of the present invention will be described in detail with reference to fig. 1 to 4.
The utility model provides a silica sol shell rapid draing equipment, includes dry storehouse 11, be equipped with import 11.1 and export 11.2 on the dry storehouse 11, import 11.1 and export 11.2 all are equipped with door 12, be equipped with in the dry storehouse 11 and be used for hanging the casing hang the mechanism, be used for the drive to hang the actuating mechanism that the mechanism removed, can carry out vacuum treatment's vacuum mechanism, can carry out the heating mechanism that heaies up, the mechanism of taking a breath that can take a breath to dry storehouse 11 with dry storehouse 11, can inspect the inspection mechanism of humiture in the dry storehouse 11.
The drying bin 11 is in an annular barrel shape, a fixed seat 20 is arranged at the bottom of the drying bin 11, bin doors 12 are arranged at two ends of the drying bin 11 through communication, and sealing gaskets are arranged on the bin doors 12; the drying chamber 11 is internally or/and externally provided with an annular reinforcing ring 19 for reinforcing the strength of the drying chamber.
A actuating mechanism for driving hang mechanism and remove includes track 1, be equipped with crossbeam 2 that can remove along track 1 in the track 1, crossbeam 2 removes along track 1 through the cooperation of sprocket with chain 5, utilizes track 1 to inject the movement track of crossbeam, has both guaranteed the position of the silica sol type of treating drying in equipment, also to the setting that can realize carrying out different drying parameters to the silica sol type of isostructure, utilizes different operating duration can realize different drying effects.
The cross section of the track 1 is of a C-shaped structure with an opening at one side, the track 1 is generally made of aluminum alloy track strips, the structural strength is high, and the end part of the cross beam 2 is inserted into the opening of the track 1; a bearing 3 is arranged between the cross beam 2 and the track 1, and the bearing 3 is sleeved at the end part of the cross beam 2 inserted into the opening of the track 1; the bearing 3 is located the C type inslot of track 1, 3 inner circle cover of bearing are on crossbeam 2, 3 outer lanes of bearing roll along track 1's internal surface, utilize antifriction bearing can realize reducing frictional force, improve the smooth and easy degree of crossbeam removal in-process, reduce friction and wearing and tearing.
The end part of the beam 2 inserted into the opening of the track 1 is also provided with a driven chain wheel 4, the driven chain wheel 4 is arranged in parallel with the bearing 3, the driven chain wheel 4 is positioned in a C-shaped groove of the track 1, a gap is arranged between the chain wheel and the inner wall of the track 1, and a chain 5 is arranged in the gap; the driven chain wheel 4 is positioned on the inner side of the bearing 3, and the bearing 3 is close to one side of the opening of the C-shaped groove of the track 1; the two tracks 1 are annularly arranged at two ends of the cross beam 2; a plurality of cross beams 2 are arranged on the track 1, and driven chain wheels 4 on the cross beams 2 are sequentially arranged on the chains 5 on the same side in a path to form annular winding connection; the beam 2 is provided with a plurality of hooks 6, the hooks 6 are sleeved on the beam 2, and the hooks 6 are in clearance fit with the beam 2; still include driving motor 7, driving motor 7 installs on the frame, be equipped with driving sprocket 8 on driving motor 7, driving sprocket 8 can drive the removal of chain 5. Utilize driving motor 7 to rotate, it rotates to drive driving sprocket, driving sprocket's position has dual mode, one kind is that driving sprocket 8 also is located orbital C type inslot, and be connected with the chain, another kind is equipped with a breach portion on the track, driving sprocket 8 inserts the chain through the drive tooth of breach portion on with driving sprocket, no matter what kind of mode, the purpose all is that driving sprocket 8 drives the chain translation, still have a plurality of driven sprocket on the chain, chain drive driven sprocket removes, driven sprocket is driving the crossbeam and is removing, thereby entire system's transmission function has been realized.
Driven sprocket 4 be located the one end or both ends of crossbeam 2, this technical scheme is because the track that adopts C type structure, and inside being the flat groove of itself, and directional stability is good between the bearing, can only set up driven sprocket at one section of crossbeam, one end provides power, and the other end utilizes the roll of bearing and the relevant cooperation between bearing and the C type groove to realize normally moving.
A hang mechanism for hanging casing includes couple 6, 6 suits of couple are on crossbeam 2, be clearance fit between couple 6 and the crossbeam 2.
The vacuum mechanism capable of performing vacuum treatment on the drying bin 11 comprises a vacuum generator 13, and the vacuum generator 13 is communicated with the inside of the drying bin 11 through a pipeline.
The heating mechanism capable of heating the drying bin 11 comprises an electromagnetic heater 14 arranged in the drying bin 11, and the electromagnetic heater 14 is uniformly arranged in the drying bin 11.
The ventilation mechanism that can take a breath includes air-blower 15, air-blower 15 passes through pipeline and the inside UNICOM of dry storehouse 11, be equipped with control valve 16 on the pipeline between air-blower 15 and the dry storehouse 11.
The inspection means capable of inspecting the temperature and humidity in the drying compartment 11 includes a temperature sensor 17 and a humidity sensor 18 provided in the drying compartment 11.
A method for drying a silica sol shell by using silica sol shell rapid drying equipment comprises a filling process, a drying process and a workpiece taking process;
1. the filling process comprises: the bin gate 12 of the feeding port is opened, the silica sol shell to be dried is hung on the hook, the beam 2 on which the silica sol shell is hung is conveyed inwards by manually operating the driving motor 7, and the hook 6 on which the silica sol shell is not hung is conveyed outwards until the silica sol shell is completely hung.
2. The drying step: closing the feed inlet bin door 12, locking and sealing, starting the vacuum generator 13, setting the vacuum degree pressure in the drying bin 11 to be 0.06-0.08MPa, raising the temperature in the bin body to 22 +/-2 ℃ by using the electromagnetic heater 14, starting the driving motor 7, automatically driving the driving motor 7 to continuously rotate at a constant speed, keeping the running speed of a silica sol shell in the drying bin 11 to be 0.02m/s, controlling the temperature in the drying bin 11 by using a temperature detection device, stopping the electromagnetic heater 14 when the temperature is raised to 24 ℃, working again by using the electromagnetic heater 14 when the temperature is lower than 20 ℃ to ensure that the temperature in the drying bin 11 is constant at 22 ℃, stopping the vacuum generator 13 when the relative humidity of the drying bin 11 is 70 percent detected by using the humidity sensor 18, starting the control valve 16 and the blower 15, discharging the internal humidity outwards, discharging the dry air again, when the humidity sensor 18 detects that the relative humidity in the drying chamber 11 is 50%, the control valve 16 and the blower 15 are closed, the vacuum generator 13 works again, the pressure in the drying chamber 11 is 0.06MPa-0.08MPa, the electromagnetic heater 14 heats the temperature in the drying chamber 11 to 22 ℃, the electromagnetic heater 14 stops working, and the operation is repeated and continues for 2 hours.
3. The workpiece taking process comprises the following steps: firstly, stopping the work of the electromagnetic heater 14, stopping the work of the vacuum generator 13, opening the control valve 16 and the air blower 15, exchanging the air in the drying bin 11 with external control, simultaneously cooling the silica sol shell by using air cooling, closing the control valve 16 and the air blower 15 when the temperature in the drying bin 11 reaches 22 ℃, opening the discharge port bin door 12, taking down the silica sol shell from the hook, manually controlling the operation of the driving motor, moving the beam 2 internally hanging the silica sol shell outwards until all the silica sol shells are taken down, and closing the discharge port bin door 12.
This technical scheme passes through PLC automatic control driving motor, vacuum generator, the control valve, the air-blower, electromagnetic heater, it is prior art to use the operation and the stopping of PLC control electrical components and parts at present, the condition that utilizes temperature sensor and humidity transducer to take place the signal as PLC control system is the common control mode of present automated control system, its theory of operation is no longer repeated here again, driving motor, vacuum generator, the control valve, the air-blower, electromagnetic heater, temperature sensor and humidity transducer all are connected with the PLC controller through the cable.
This transmission structure adopts the circular orbit as the orbit, and inside is equipped with can be along orbital motion's crossbeam, hangs the silica sol type on the crossbeam, through a periodic removal, realizes the drying, because inside temperature, pressure etc. of drying equipment set up and adopt motor drive's chain drive mode, and equipment stability is strong, is convenient for maintain and maintain. Equipment self adopts revolution mechanic, gets into from one end, and the other end comes out for the crossbeam that hangs the silica sol type can get back to initial position voluntarily, and interval is invariable between the adjacent silica sol type, prevents the dry effect subalternation problem that extrusion or local temperature are inhomogeneous to lead to.
While the preferred embodiments of the present invention have been described in detail, it should be apparent that many changes can be made within the inventive concept of the present invention, and it is intended that all changes that can be made within the inventive concept of the present invention are encompassed by the present invention.
Claims (10)
1. A silica sol shell rapid drying device is characterized in that: including dry storehouse (11), be equipped with import (11.1) and export (11.2) on dry storehouse (11), import (11.1) and export (11.2) all are equipped with door (12), be equipped with in dry storehouse (11) and be used for hanging the casing hang the mechanism, be used for the drive to hang the actuating mechanism that the mechanism removed, can carry out vacuum treatment's vacuum mechanism, can carry out the heating mechanism that heaies up, the mechanism of taking a breath that can take a breath to dry storehouse (11) with dry storehouse (11), can inspect the inspection mechanism of humiture in dry storehouse (11).
2. The silica sol shell flash drying apparatus of claim 1, wherein: drying chamber (11) are annular tubbiness, drying chamber (11) both ends are equipped with door (12) through exchanging, be equipped with seal ring on door (12).
3. The silica sol type shell flash drying apparatus as set forth in claim 2, wherein: an annular reinforcing ring (19) for reinforcing the strength of the drying bin is arranged inside or/and outside the drying bin (11).
4. The silica sol shell flash drying apparatus of claim 1, wherein: a actuating mechanism for driving suspension mechanism removes includes track (1), be equipped with crossbeam (2) that can remove along track (1) in track (1), crossbeam (2) pass through the cooperation of sprocket and chain (5) and remove along track (1), track (1) cross-section is one side open-ended C type structure, crossbeam (2) tip inserts in track (1) opening, be equipped with bearing (3) between crossbeam (2) and track (1), bearing (3) suit is at the tip that crossbeam (2) inserted in track (1) opening, bearing (3) are located the C type inslot of track (1), bearing (3) inner circle cover is on crossbeam (2), bearing (3) outer lane rolls along the internal surface of track (1), the tip that crossbeam (2) inserted in track (1) opening still is equipped with driven sprocket (4), driven sprocket (4) and bearing (3) set up side by side, driven sprocket (4) are located the C type inslot of track (1), be equipped with the clearance between sprocket and track (1) inner wall, be equipped with chain (5) in the clearance, driven sprocket (4) are located the inboard of bearing (3), bearing (3) are close to opening one side in the C type groove of track (1), track (1) include two, and the annular setting is at the both ends of crossbeam (2), be equipped with a plurality of crossbeam (2) on track (1), become annular wraparound after driven sprocket (4) on crossbeam (2) are arranged in proper order to chain (5) way of homonymy, still include driving motor (7), be equipped with driving sprocket (8) on driving motor (7), driving sprocket (8) can drive chain (5) and remove.
5. The silica sol type shell flash drying apparatus as set forth in claim 4, wherein: a hang mechanism for hanging casing includes couple (6), couple (6) suit is on crossbeam (2), be clearance fit between couple (6) and crossbeam (2).
6. The silica sol shell flash drying apparatus of claim 1, wherein: the vacuum mechanism capable of carrying out vacuum treatment on the drying bin (11) comprises a vacuum generator (13), and the vacuum generator (13) is communicated with the interior of the drying bin (11) through a pipeline.
7. The silica sol type shell flash drying apparatus as set forth in claim 1, wherein: the heating mechanism capable of heating the drying bin (11) comprises an electromagnetic heater (14) arranged in the drying bin (11), and the electromagnetic heater (14) is uniformly arranged in the drying bin (11).
8. The silica sol type shell flash drying apparatus as set forth in claim 1, wherein: the mechanism of taking a breath that can take a breath includes air-blower (15), air-blower (15) are through pipeline and dry storehouse (11) inside UNICOM, be equipped with control valve (16) on the pipeline between air-blower (15) and dry storehouse (11).
9. The silica sol shell flash drying apparatus of claim 1, wherein: the inspection mechanism capable of inspecting the temperature and humidity in the drying bin (11) comprises a temperature sensor (17) and a humidity sensor (18) which are arranged in the drying bin (11).
10. A method for drying a silica sol shell by using silica sol shell rapid drying equipment is characterized by comprising the following steps: the method comprises a filling process, a drying process and a workpiece taking process;
1) the filling step: opening a bin door (12) of a feeding hole, hanging a silica sol shell to be dried on a hook, manually operating a driving motor (7), conveying a beam (2) on which the silica sol shell is hung inwards, and conveying a hook (6) on which the silica sol shell is not hung outwards until the silica sol shell is completely hung;
2) the drying step comprises: closing a feed inlet bin door (12), locking and sealing, starting a vacuum generator (13), setting the vacuum degree (pressure) in a drying bin (11) to be 0.06-0.08MPa, raising the temperature in the bin body to 22 +/-2 ℃ by using an electromagnetic heater (14), starting a driving motor (7), automatically operating the driving motor (7), keeping the driving motor to continuously rotate at a constant speed, keeping the speed of the silica sol shell in the drying bin (11) to be 0.02m/s when the silica sol shell runs, controlling the temperature in the drying bin (11) by using a temperature detection device, stopping the electromagnetic heater (14) when the temperature is raised to 24 ℃, stopping the electromagnetic heater (14) when the temperature is lower than 20 ℃, operating the electromagnetic heater (14) again to ensure that the temperature in the drying bin (11) is constant at 22 ℃, and stopping the vacuum generator (13) when a humidity sensor (18) detects that the relative humidity of the drying bin (11) is 70%, opening a control valve (16) and an air blower (15), discharging the internal humidity outwards, discharging the dry air again, when a humidity sensor (18) detects that the relative internal humidity of the drying bin (11) is 50%, closing the control valve (16) and the air blower (15), enabling a vacuum generator (13) to work again, enabling the pressure in the drying bin (11) to be 0.06MPa-0.08MPa, and enabling an electromagnetic heater (14) to stop working when the temperature in the drying bin (11) is heated to 22 ℃ by the electromagnetic heater (14), and repeating the steps and continuously working for 2 hours;
3) the workpiece taking process comprises the following steps: firstly, stopping working of an electromagnetic heater (14), stopping working of a vacuum generator (13), starting a control valve (16) and an air blower (15), exchanging air in a drying bin (11) with external control, simultaneously cooling a silica sol shell by using air cooling, closing the control valve (16) and the air blower (15) when the temperature in the drying bin (11) reaches 22 ℃, starting a discharge port bin door (12), taking down the silica sol shell from a hook, manually controlling a driving motor to work, moving a beam (2) internally suspending the silica sol shell outwards until all the silica sol shells are taken down, and closing the discharge port bin door (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210498099.7A CN114777424A (en) | 2022-05-09 | 2022-05-09 | Rapid drying equipment and method for silica sol shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210498099.7A CN114777424A (en) | 2022-05-09 | 2022-05-09 | Rapid drying equipment and method for silica sol shell |
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| CN114777424A true CN114777424A (en) | 2022-07-22 |
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| CN202210498099.7A Pending CN114777424A (en) | 2022-05-09 | 2022-05-09 | Rapid drying equipment and method for silica sol shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115638619A (en) * | 2022-10-21 | 2023-01-24 | 北京大学 | Quick clean desiccator of liquid nitrogen container |
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