CN109163550A - Vacuum drying oven - Google Patents
Vacuum drying oven Download PDFInfo
- Publication number
- CN109163550A CN109163550A CN201810923979.8A CN201810923979A CN109163550A CN 109163550 A CN109163550 A CN 109163550A CN 201810923979 A CN201810923979 A CN 201810923979A CN 109163550 A CN109163550 A CN 109163550A
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- China
- Prior art keywords
- water cooling
- sunpender
- water
- vacuum
- furnace core
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/18—Arrangement of controlling, monitoring, alarm or like devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B2005/062—Cooling elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of vacuum drying ovens, are related to technical field of vacuum equipment, and main purpose is to improve the weight of prefabricated rods, extend the service life of vacuum drying oven.Main technical schemes of the invention are as follows: the vacuum drying oven includes preparation room；Water cooling sunpender, one end are inserted in preparation room by sealing device, and the other end is located at the outside of preparation room；Heat room, it is isolated by water cooling gate valve with preparation room, heating interior is provided with furnace core tube, and successively sealing is communicated with the air inlet bellows and outlet bellows for extending to heating outdoor respectively for the top and bottom of furnace core tube, and having heaters is arranged in the periphery of furnace core tube；First cylinder, piston rod are abutted by support plate with the bottom of furnace core tube；Water-cooling system is connected to water cooling sunpender and water cooling gate valve respectively；Vacuum system is connected to heating room and preparation room respectively；Driving mechanism is connect with the other end of water cooling sunpender.Present invention is mainly used for sintering fibre-optical preforms.
Description
Technical field
The present invention relates to technical field of vacuum equipment, in particular to a kind of vacuum drying oven.
Background technique
Promotion and popularization and China broadband implementation with fiber optic communication, so that the demand to fiber optic materials
It sharply increases.
It is made currently, fiber optic materials usually require to be sintered in a vacuum furnace, which generally includes preparation room and pass through
The heating room that valve is isolated with preparation room is provided with furnace core tube and heater in heating interior, and furnace core tube is usually point
Body formula sleeve structure, i.e., be mutually spliced to form by more piece furnace core tube, wherein preparation room heats room for installing prefabricated rods workpiece
For carrying out heat-agglomerating to the indoor workpiece of preparation is mounted on by furnace core tube and heater.
However, in heat-agglomerating workpiece, the temperature of furnace core tube would generally be increased to 1500 DEG C or more, so that furnace core tube is sent out
Heat expands and easily to be separated from each other between each section furnace core tube, so that the outer substance of pipe enters the burning in pipe and influencing workpiece
Quality is tied, corrosive gas outflow and the indoor other components of corrosion sintering in pipe lead to the second-rate of prefabricated rods, and contract
The service life of short vacuum drying oven.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of vacuum drying oven, main purpose is to improve the weight of prefabricated rods, is extended true
The service life of empty furnace.
In order to achieve the above objectives, present invention generally provides following technical solutions:
The embodiment of the invention provides a kind of vacuum drying ovens, comprising:
Preparation room；
One end of water cooling sunpender, the water cooling sunpender is inserted in the preparation room by sealing device, for hanging work
Part, the other end are located at the outside of the preparation room；
Room is heated, the heating room is isolated by water cooling gate valve and the preparation room, and the heating interior is provided with
Furnace core tube, successively sealing is communicated with the air inlet ripple for extending to the heating outdoor respectively for the top and bottom of the furnace core tube
Having heaters is arranged in the periphery of pipe and outlet bellows, the furnace core tube；
The piston rod of cylinder, the cylinder is abutted by support plate with the bottom of the furnace core tube, by the furnace core tube
It is pressed in the top of the heating room, for buffering the deformation of furnace core tube so that the furnace core seal of tube；
Water-cooling system, the water-cooling system are connected to the water cooling sunpender and the water cooling gate valve respectively, are used for as institute
It states water cooling sunpender and water cooling gate valve cools；
Vacuum system, the vacuum system are connected to the heating room and the preparation room respectively, for being the heating
Room and preparation room provide vacuum condition；
Driving mechanism, the driving mechanism are connect with the other end of the water cooling sunpender, for driving the water cooling sunpender
It rotates or moves up and down.
Further, the sealing device is device for sealing magnetic fluid, and the device for sealing magnetic fluid includes axle sleeve, oiling
Ring, the first sealing ring and the second sealing ring；
The inner wall of the axle sleeve has been arranged radially annular convex platform, is provided with oil inlet and exhaust outlet on the axle sleeve；
The oiling ring is coaxially disposed within the one of in the axle sleeve and one end of the oiling ring and the annular convex platform
Side abuts against, and the outer wall of the oiling ring has been arranged radially annular first groove, and inner wall has been arranged radially and first groove
The second opposite groove, first groove and second groove are connected to by through-hole, first groove and the oil inlet
Mouth is connected to the exhaust outlet；
The water cooling sunpender is inserted in the oiling ring and can be axially moved relative to the oiling ring；
First sealing ring is sheathed on the one end between the water cooling sunpender and the axle sleeve and being located at the oiling ring,
One end of the oiling ring is abutted against by the side of first sealing ring and the annular convex platform；
Second sealing ring is sheathed between the water cooling sunpender and the axle sleeve and is located at the another of the oiling ring
End.
Further, the device for sealing magnetic fluid further includes guide sleeve and the first pressure for being connected to the axle sleeve both ends
Ring and the second pressure ring；
The guide sleeve is coaxially disposed in the axle sleeve and is sheathed on the outside of the water cooling sunpender, the guide sleeve
One end be connected to the pressure ring, the other end is connected to the other side of the annular convex platform；
It is all provided between the water cooling sunpender and first pressure ring and between the water cooling sunpender and second pressure ring
It is equipped with dustband.
Further, the water cooling sunpender is connected to by rotary joint with the water-cooling system；
The water cooling sunpender includes the first tube body and the second tube body for being sheathed on outside first tube body, first pipe
The first annular channel being connected to first tube body is formed between body and second tube body；
One end of first tube body and second tube body and the rotary joint are rotatablely connected, the rotary joint
Interface is connected to the inlet and outlet of the water-cooling system respectively, and cooling water is made to flow into first pipe by the rotary joint
Body, and the water-cooling system is back to by the circular passage and the rotary joint.
Further, the water cooling gate valve includes valve plate, the valve plate be double-layer water jacket structure, the valve plate have into
The mouth of a river and water outlet, the outlet of the water inlet of the valve plate and the water-cooling system, the water outlet of the valve plate with it is described
The inlet communication of water-cooling system.
Further, the heater is arranged around the middle part of the furnace core tube；
The vacuum drying oven further includes heat-preservation cylinder, the heat-preservation cylinder be wrapped in the furnace core tube bottom and the heater
It is external.
Further, the vacuum system is connected to by filter with the preparation room and the heating room；
The filter includes corrosion-resistant filter core；
The vacuum system includes dry type oil-free vacuum pump group.
Further, feeding gate and adjustment door are provided on the preparation room, the feeding gate and the adjustment door are vertical
Arrangement.
Further, it is provided on the feeding gate and the adjustment door for detecting its first state whether closed
The first sensor of information；
The vacuum drying oven further includes control unit, and described control unit is electric with the sensor and the vacuum system respectively
Connection for receiving the status information of the sensor feedback, and judge to work as the status information as the feeding gate and described
When adjustment door is turned off, the vacuum system starting is controlled.
Further, vacuum meter is provided between the heating room and the vacuum system, the vacuum meter is for detecting
The indoor vacuum degree of heating；
Described control unit is electrically connected with the vacuum meter, the water cooling gate valve and the driving mechanism respectively；
Described control unit is also used to receive the vacuum degree of vacuum meter feedback, and judge to be greater than when the vacuum degree or
It when equal to the first preset value, controls the vacuum system and stops starting, the water cooling gate valve is opened, the driving mechanism driving
The water cooling sunpender, which moves down, send the workpiece to furnace core tube.
Further, the temperature measurer for measuring the indoor temperature of heating is provided on the heating room；
Described control unit is electrically connected with the temperature measurer and the heater, the temperature for being fed back according to the temperature measurer
Angle value is in the second preset value, and the control driving machine using the heating temperature that pid control mode controls the heater
Structure drives the water cooling sunpender rotation；And after preset time, controls the heater and stop heating, the driving mechanism stops
Rotation, the driving mechanism driving water cooling sunpender, which moves up to send the workpiece to preparation room and the water cooling, to be inserted
Plate valve is closed.
By above-mentioned technical proposal, the present invention is at least had the advantages that
Vacuum drying oven provided in an embodiment of the present invention, by the way that cylinder, and the piston rod of the cylinder is arranged in the bottom of furnace core tube
It is abutted against by the bottom of support plate and furnace core tube, furnace core tube is pressed between heating ceiling portion and cylinder, when
During deformation occurs due to expanded by heating or cooling meat, piston rod can move furnace core tube with the deformation of furnace core tube,
Buffer function is played to the deformation of furnace core tube to realize, so that furnace core tube can guarantee always in state is compacted
The sealing closed state of furnace core tube avoids the indoor substance of heating and enters in furnace core tube, improves the matter of default stick workpiece
Amount, the corrosive gas streams for also avoiding generating in furnace core tube go out furnace core tube and damage to indoor other components are heated,
Extend the service life of the vacuum drying oven.Moreover, by the way that in the top and bottom of furnace core tube, successively sealing is communicated with outlet respectively
Bellows and air inlet bellows, the closing for realizing process gas in furnace core tube imports and the closing export of reaction generation exhaust gas,
It avoids and pollutes the environment.Meanwhile by the setting of water cooling gate valve, allow water-cooling system for water cooling gate valve drop
Temperature avoids gate valve and damages because high temperature deforms, to ensure that independence can be reliably isolated in preparation room and heating room
It vacuumizes.In addition, passing through the setting of water cooling sunpender, allows water-cooling system for the cooling of water cooling sunpender, avoid sunpender because of work
The high temperature transmitting of part deforms and damages, to ensure that water cooling sunpender can be reliably achieved big stroke lifting and smoothly
Rotation, and then ensure that the quality of prefabricated rods.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of vacuum drying oven provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of sealing device in Fig. 1；
Fig. 3 is the structural schematic diagram of oiling ring in Fig. 2；
Fig. 4 is sectional view along A-A in Fig. 3.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the preferred embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or
Similar label indicates same or similar element or element with the same or similar functions.Described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to
It is used to explain the present invention, and is not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the present embodiment and simplifies description, rather than indication or suggestion meaning
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the present embodiment
The limitation of protection scope.
As shown in Figure 1, the embodiment of the invention provides a kind of vacuum drying oven, including preparation room 1；Water cooling sunpender 2, the water cooling are hung
One end of bar 2 is inserted in preparation room 1 by sealing device 3, and for hanging workpiece 4, the other end is located at the outside of preparation room 1,
Wherein, suspension hook has can be set in the end of the water cooling sunpender 2, to hang workpiece 4；Room 5 is heated, which passes through water cooling
Gate valve 6 is isolated with preparation room 1, is heated in room 5 and is provided with furnace core tube 51, the top and bottom of the furnace core tube 51 are successively distinguished
Sealing is communicated with the air inlet bellows 52 and outlet bellows 53 extended to outside heating room 5, and the periphery of furnace core tube 51 is provided with
Heater 54；The piston rod of cylinder 7, the cylinder 7 is abutted by support plate 71 with the bottom of furnace core tube 51, and furnace core tube 51 is pressed
Tightly in the top of heating room 5, for buffering the deformation of furnace core tube 51 so that furnace core tube 51 seals；Water-cooling system, the water-cooling system
It is connected to respectively with water cooling sunpender 2 and water cooling gate valve 6, for cooling for water cooling sunpender 2 and water cooling gate valve 6；Vacuum system
System 8, the vacuum system 8 are connected to heating room 5 and preparation room 1 respectively, for providing vacuum condition for heating room 5 and preparation room 1；
Driving mechanism 9, the driving mechanism 9 are connect with the other end of water cooling sunpender 2, for driving water cooling sunpender 2 to rotate or moving up and down.
Wherein, furnace core pipe fixing device 511 has can be set in the top for heating room 5, can be set and has closed the lid thereon
The compatible fixing groove of the top contour shape of furnace core tube 51 after plate, in order to which furnace core tube 51 is pressed in fixing groove and cylinder 7
Between, and furnace core tube 51 can be corrosion resistant high purity graphite cylinder.Moreover, gas can be set on air inlet bellows 52
Valve 521 is imported, in order to which process gas enters furnace core tube 51 by air inlet bellows 52 under the control that the gas imports valve 521
It is interior, exhaust valve 531 can be set on outlet bellows 53, it can be in the exhaust valve 531 in order to be sintered the exhaust gas of generation
Control under pass through outlet bellows 53 discharge, which can be connected to vacuum system 8, in order to the row of exhaust gas
Out.Heater 54 can be powered by heating power supply 541.In addition, driving mechanism 9 may include another with water cooling sunpender 2 respectively
The rotating electric machine 91 and lifting motor 92 being drivingly connected are held, rotating electric machine 91 drives water cooling sunpender 2 to rotate, and lifting motor 92 drives
Water cooling sunpender 2 moves up and down.And safety valve 93 is provided on the pipeline being connected between vacuum system 8 and preparation room 1, to guarantee
The safe handling of the vacuum drying oven.Water-cooling system is common technology in the prior art, specifically can be in the prior art when implementing
Middle selection.
The specific embodiment of the vacuum drying oven can be with are as follows: first send workpiece 4 to preparation room 1 and is hung on water cooling sunpender 2
On, then starting vacuum system 8 and starting exhaust is that preparation room 1 and heating room 5 provide vacuum condition, opens water cooling gate valve 6, drives
Workpiece 4 is sent into the furnace core tube 51 of heating room 5 by the lifting motor driving water cooling sunpender 2 of motivation structure 9, then in starting heater
54 heat for workpiece 4, while the rotating electric machine driving water cooling sunpender 2 of driving mechanism 9 drives 4 rotary heating of workpiece, it is ensured that workpiece 4
In circumferencial direction thermally equivalent, multi-region independent heating, the independent temperature control of radial direction (i.e. up and down direction) guarantee that radial direction adds
The uniformity of heat；After heating, workpiece 4 is raised in preparation room 1 by the lifting motor driving water cooling sunpender 2 of driving mechanism 9, is closed
Water cooling gate valve 6 is closed, workpiece 4 is cooled to the condition of coming out of the stove, and takes out workpiece 4, completes the sintering of a workpiece 4.In continuous production,
During the furnace core tube 51 of heating room 5 is under vacuum always, is hot, power consumption is not only saved in this way, but also improves the use longevity of equipment
Life.
Vacuum drying oven provided in an embodiment of the present invention, by the way that cylinder, and the piston rod of the cylinder is arranged in the bottom of furnace core tube
It is abutted against by the bottom of support plate and furnace core tube, furnace core tube is pressed between heating ceiling portion and cylinder, when
During deformation occurs due to expanded by heating or cooling meat, piston rod can move furnace core tube with the deformation of furnace core tube,
Buffer function is played to the deformation of furnace core tube to realize, so that furnace core tube can guarantee always in state is compacted
The sealing closed state of furnace core tube avoids the indoor substance of heating and enters in furnace core tube, improves the matter of default stick workpiece
Amount, the corrosive gas streams for also avoiding generating in furnace core tube go out furnace core tube and damage to indoor other components are heated,
Extend the service life of the vacuum drying oven.Moreover, by the way that in the top and bottom of furnace core tube, successively sealing is communicated with outlet respectively
Bellows and air inlet bellows, the closing for realizing process gas in furnace core tube imports and the closing export of reaction generation exhaust gas,
It avoids and pollutes the environment.Meanwhile by the setting of water cooling gate valve, allow water-cooling system for water cooling gate valve drop
Temperature avoids gate valve and damages because high temperature deforms, to ensure that independence can be reliably isolated in preparation room and heating room
It vacuumizes.In addition, passing through the setting of water cooling sunpender, allows water-cooling system for the cooling of water cooling sunpender, avoid sunpender because of work
The high temperature transmitting of part deforms and damages, to ensure that water cooling hangs 2 and can be reliably achieved big stroke lifting and smoothly
Rotation, and then ensure that the quality of prefabricated rods.
In an optional embodiment, referring to fig. 2, Fig. 3 and Fig. 4, sealing device 3 can be device for sealing magnetic fluid, should
Device for sealing magnetic fluid may include axle sleeve 14, oiling ring 15, the first sealing ring 17 and the second sealing ring 16；Wherein, axle sleeve 14
Inner wall annular convex platform 145 radially can be set, oil inlet 144 and exhaust outlet 143 can be set on axle sleeve 14；Oiling ring
15 can be coaxially disposed in axle sleeve 14 and one end of oiling ring 15 and the side of annular convex platform 145 abut against, oiling ring 15
Outer wall be arranged radially annular first groove 151, inner wall is arranged radially annular second groove opposite with the first groove 151
152, the first groove 151 is connected to the second groove 152 by through-hole 153, and the quantity of the through-hole 153 can be to be distributed in oiling ring
Four on 15, the first groove 151 is connected to oil inlet 144 and exhaust outlet 143；Water cooling sunpender is inserted in oiling ring 15 simultaneously
It can be axially moved relative to oiling ring 15；First sealing ring 17 is sheathed between water cooling sunpender and axle sleeve 14 and is located at oiling
One end of one end of ring 15, oiling ring 15 is abutted against by the side of the first sealing ring 17 and annular convex platform 145；Second sealing ring
16 are sheathed between water cooling sunpender and axle sleeve 14 and are located at the other end of oiling ring 15.By the way that oiling ring 15 is arranged, realizing can
To be passed through lubricating oil into the first groove 151 of oiling ring 15 by the oil inlet 144 on axle sleeve 14, due to the first groove 151
It is connected to by through-hole 153 with the second groove 152, therefore, lubricating oil can flow into the second groove from the first groove 151 by through-hole
152, and be stored between the first groove 151 and the second groove 152, thus realize water cooling sunpender 2 in the process of moving with
Oil injecting lubricating between first sealing ring 17 and the second sealing ring 16, effectively reduces the friction between water cooling sunpender and sealing ring
Power avoids sealing ring and is worn, and extends the service life of sealing ring, ensure that the sealing function of device for sealing magnetic fluid,
And then it ensure that the stroke big stably in a long term of water cooling sunpender is axially moved.It wherein, include anticorrosion magnetic liquid and axis in axle sleeve 14
Hold equal components, to realize the function that rotates smoothly of water cooling sunpender, specifically, the magnet fluid sealing principle of device for sealing magnetic fluid with
And the rotation connection structure between water cooling sunpender is same as the prior art, details are not described herein again.
In an optional embodiment, referring to fig. 2, device for sealing magnetic fluid above-mentioned can also include guide sleeve 20 and
It is connected to first pressure ring 142 and the second pressure ring 141 at 14 both ends of axle sleeve；Guide sleeve 20 is coaxially disposed in axle sleeve 14 and is arranged
In the outside of water cooling sunpender 2, one end of guide sleeve 20 is connected to the first pressure ring 142, and the other end is connected to the another of annular convex platform 145
Side.By be arranged guide sleeve 20, avoid water cooling sunpender 2 during big stroke motion due to its straightness error rapidly
So that sealing ring is deformed or is worn, moreover, between water cooling sunpender 2 and the first pressure ring 142 and water cooling sunpender 2 and second pressure
It is provided with dustband (18,19) between ring 141, ensure that the impurity such as dust enter in device and sealing ring is caused to wear, into
One step avoids sealing ring and is worn, and extends the service life of sealing ring, ensure that the sealing function of device for sealing magnetic fluid,
And then it ensure that the stroke big stably in a long term of water cooling sunpender is axially moved.
In the sintering process of workpiece 4, due to driving mechanism 9 drive water cooling sunpender 2 rotated, with drive workpiece 4 into
Row rotary heating, and 2 inconvenience of water cooling sunpender in rotation status is connect with water-cooling system, to be unfavorable for water cooling sunpender 2
Cool, in order to solve this technical problem, in an optional embodiment, water cooling sunpender 2 can pass through rotary joint
21 are connected to water-cooling system；The water cooling sunpender 2 may include the first tube body 22 and the second pipe being sheathed on outside the first tube body 22
Body 23 is formed with the circular passage 24 being connected to the first tube body 22 between first tube body 22 and the second tube body 23；First tube body 22
Be rotatablely connected with one end of the second tube body 23 and rotary joint 21, the interface of rotary joint 21 respectively with the import of water-cooling system and
Outlet makes cooling water flow into the first tube body 22 by rotary joint 21, and is returned by circular passage 24 and rotary joint 21
It flow to water-cooling system.By the way that the inside and outside tube body of water cooling sunpender 2 is rotatablely connected with rotary joint 21, and 21 side of rotary joint
The interface in face can be connected to the inlet and outlet of water-cooling system, the axially mounted end of rotary joint 21 can with inside and outside tube body into
Row installation, realizes rotation connection, so that water cooling sunpender 2 is in the course of rotation, can pass through rotary joint 21 and water cooling
System is steadily connected to, that is, is realized in the rotation process of water cooling sunpender 2, cooling water can be recycled by rotary joint 21
The first tube body 22 is flowed into, and by circular passage 24 and 21 circulating reflux of rotary joint to water-cooling system, to realize that water cooling is hung
The cooling of bar 2 ensure that water cooling sunpender 2 can be reliably achieved big stroke lifting and smoothly rotate, and structure is simple, using can
It leans on.Wherein, the first tube body 22 can be stainless steel tube, and the second tube body 23 can be 316L stainless steel, and rotary joint 21 is existing
There is the common technology in technology, can specifically be chosen in the prior art when implementing.
In an optional embodiment, water cooling gate valve 6 may include valve plate 61, which can be double-layer water jacket knot
Structure, valve plate 61 have water inlet 611 and water outlet 612, the water inlet 611 of valve plate 61 and the outlet of water-cooling system, valve plate
61 water outlet 612 and the inlet communication of water-cooling system.By the way that water cooling gate valve 6 is designed as double-layer water jacket structure, so that water
The cooling water of cooling system can be recycled into double-layer water jacket, be then recirculated back to and flow to water-cooling system, to realize valve plate 61
Cooling avoids it and damages because heat radiation deforms so that water cooling gate valve 6 is resistant to the heat radiation of heating room 5, protects
It has demonstrate,proved preparation room 1 and heating room 5 can be mutually indepedent.
In the sintering process of workpiece 4, the top of prefabricated rods workpiece 4 is connected with tail stick 41, and passes through tail stick 41 on this
It is connect with water cooling sunpender 2, and it is quartz material, lower part is connected with lower tail stick 42, i.e., undertakes entire prefabricated rods by upper tail stick 41
The weight of workpiece 4, so that prefabricated rods workpiece 4 can be located at the middle part of furnace core tube 51 with vertical state, to guarantee the sintering of prefabricated rods
Quality, however, tail stick 41 and easily softening transform due to high temperature heat radiation of lower tail stick 42 on this, to influence the sintering matter of prefabricated rods
Amount, in order to solve this technical problem, in an optional embodiment, heater 54 can surround the middle part cloth of furnace core tube 51
It sets；And the vacuum drying oven can also include heat-preservation cylinder 55, the heat-preservation cylinder 55 be wrapped in furnace core tube 51 bottom and heater 54 it is outer
Portion.By the way that heater 54 to be arranged around to the middle part of furnace core tube 51, and in the bottom of the outside of heater 54 and furnace core tube 51
It is enclosed with heat-preservation cylinder 55, so as to form the semi-enclosed heat-insulation system in the totally-enclosed top in lower part of furnace core tube 51, so that prefabricated
51 part of furnace core tube where 4 centre part to be sintered of stick workpiece is completely in the heating region of heater 54, and completely
In heat-preservation cylinder 55, the uniform and low energy consumption heating of prefabricated rods workpiece 4 is realized；Meanwhile the furnace core tube where upper tail stick 41
51 parts do not have the heating of heater 54, the heat preservation also without heat-preservation cylinder 55, ensure that tail stick 41 will not be due to high temperature heat radiation
Soften lengthening deformation, moreover, lower tail stick 42 is also without the heating of heater 54, but have the heat preservation of heat-preservation cylinder 55, reduce plus
The loss of hot 54 heat of device, while ensure that lower tail stick 42 will not be deformed because keeping the temperature heat radiation, to ensure that prefabricated rods work
Part 4 can be located at the middle part thermally equivalent of furnace core tube 51 with vertical state, ensure that the sintering quality of prefabricated rods.Wherein, heat-preservation cylinder
55 can be graphite felt cylinder.
Due to that can generate dust and corrosive gas in technical process, this has oil machine group to have biggish damage traditional
Wound must replace whole pump oils at interval of certain time, can just continue to use, maintenance cost is higher, the labor intensity of operator
Larger, in order to solve this technical problem, in an optional embodiment, vacuum system 8 can pass through filter 81 and preparation
Room 1 is connected to heating room 5, and filter 81 may include corrosion-resistant filter core；Vacuum system 8 may include dry type oilless vacuum pump
Pump group made of group, lobe pump and screw pump, by the filter 81 and dry type oil-free vacuum pump group that include corrosion-resistant filter core
Setting, so that the filter 81 may filter that out of dust Deng impurity, and vacuum pump group uses dry type oilless vacuum pump, so that should
Vacuum drying oven can reduce maintenance cost and the labor intensity of operator without regularly replacing pump oil without maintenance/operation throughout the year.
In an optional embodiment, feeding gate 11 and adjustment door 12,11 He of feeding gate can be set on preparation room 1
Adjustment door 12 is arranged vertically, i.e., feeding gate 11 can be set in front, and adjusting door 12 can be set in side.By in preparation room
One adjustment door 12 of setting on 1 realizes and workpiece 4 is being sent into preparation room 1 and workpiece 4 is hung the process on water cooling sunpender 2
In, the position of workpiece 4 can be observed and adjust by opening adjustment door 12, so that workpiece 4 can smoothly be hung on water cooling
It is simple to operate on sunpender 2.Certainly, it is also provided with door body on heating room 5, in order to use.
Further, it in an optional embodiment, can be set on feeding gate 11 and adjustment door 12 for examining
Survey the sensor 13 for the status information whether it closes；Vacuum drying oven can also include control unit 10, the control unit 10 difference
Be electrically connected with sensor 13 and vacuum system 8, for receiving sensor 13 feed back status information, and judge be when status information
When feeding gate 11 and adjustment door 12 are turned off, control vacuum system 8 starts.That is, when workpiece 4 is sent to preparation room 1, and
It installs, closes after feeding gate 11 and adjustment door 12, control unit 10 can start vacuum system 8 automatically with water cooling sunpender 2
To preparation room 1 and exhaust combustion chamber, so that preparation room 1 and combustion chamber form vacuum.Wherein, sensor 13 can be in magnet
The Hall sensor of cooperation or close switch etc., and control unit 10 may include programmable controller.
Further, it in an optional embodiment, heats and is provided with vacuum meter 82 between room 5 and vacuum system 8, this is true
Sky meter 82 is for detecting the vacuum degree in heating room 5；Control unit 10 respectively with vacuum meter 82, water cooling gate valve 6 and driving machine
Structure 9 is electrically connected；Control unit 10 is also used to receive the vacuum degree of the feedback of vacuum meter 82, and judges to be greater than or equal to the when vacuum degree
When one preset value, control vacuum system 8 stops starting, and water cooling gate valve 6 is opened, and driving mechanism 9 drives water cooling sunpender 2 to moving down
It is dynamic to send workpiece 4 to furnace core tube 51, wherein the first preset value can be the vacuum degree reached required in preparation room 1 and vacuum chamber.
That is, after control unit 10 starts vacuum system 8 and starts exhaust, can by preparation room 1 that vacuum meter 82 is fed back and plus
Vacuum degree in hot cell 5 is compared with preset vacuum degree (the first preset value), and the vacuum degree fed back to vacuum meter 82 reaches
When predetermined vacuum is spent, i.e. automatic control water cooling gate valve 6 is opened, the lifting motor starting in driving mechanism 9, to pass through water cooling
Workpiece 4 is sent into the furnace core tube 51 of heating room 5 by sunpender 2.Specifically, water cooling gate valve 6 can also include that drive valve plate 61 is opened
The cylinder for opening or closing, the cylinder are electrically connected with control unit 10, and control unit 10 controls water cooling plate by control cylinder
Valve 6 opens or closes.
Further, it in an optional embodiment, is can be set on heating room 5 for measuring in heating room 5
The temperature measurer 56 of temperature；Control unit 10 is electrically connected with temperature measurer 56 and heater 54, the temperature for being fed back according to temperature measurer 56
Angle value is in the second preset value using the heating temperature of pid control mode control heater 54, and control driving mechanism 9 drives
Water cooling sunpender 2 rotate, moreover, and after preset time, control driving mechanism 9 stop rotating, driving mechanism 9 drive water cooling sunpender
2 move up by workpiece 4 send to preparation room 1 and water cooling gate valve 6 closing, wherein the second preset value can for heating room 5
The required temperature value reached, preset time can be heating time needed for workpiece 4.The present embodiment uses PID temperature control method, real
Now after control unit 10 controls driving mechanism 9, and water cooling sunpender 2 is driven to send workpiece 4 to the furnace core tube 51 of heating room 5, control
Unit 10 can be heated according to the temperature value that temperature measurer 56 is fed back using PID temperature control method control heater 54, guarantee to add
Hot temperature is in preset temperature always, while controlling driving mechanism 9 and driving water cooling sunpender 2 that workpiece 4 is driven to rotate, to preset time
Afterwards, control unit 10 can control heater 54 stop heating, control driving mechanism 9 drive water cooling sunpender 2 move up with will
Workpiece 4 is sent to preparation room 1, and closes water cooling gate valve 6, is cooled to the condition of coming out of the stove to workpiece 4, is opened feeding gate 11, takes out work
Part 4, that is, complete the sintering of a workpiece 4, and aforementioned whole process carries out control realization by control unit 10 and is automatically performed, improves
Working efficiency.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of vacuum drying oven characterized by comprising
Preparation room；
One end of water cooling sunpender, the water cooling sunpender is inserted in the preparation room by sealing device, for hanging workpiece, separately
One end is located at the outside of the preparation room；
Room is heated, the heating room is isolated by water cooling gate valve and the preparation room, and the heating interior is provided with furnace core
Pipe, the top and bottom of the furnace core tube successively respectively sealing be communicated with extend to it is described heating outdoor air inlet bellows and
Having heaters is arranged in the periphery of outlet bellows, the furnace core tube；
The piston rod of cylinder, the cylinder is abutted by support plate with the bottom of the furnace core tube, and the furnace core tube is compressed
In the top of the heating room, for buffering the deformation of furnace core tube so that the furnace core seal of tube；
Water-cooling system, the water-cooling system are connected to the water cooling sunpender and the water cooling gate valve respectively, for being the water
Cold sunpender and water cooling gate valve cool；
Vacuum system, the vacuum system are connected to the heating room and the preparation room respectively, for for the heating room with
Preparation room provides vacuum condition；
Driving mechanism, the driving mechanism are connect with the other end of the water cooling sunpender, for driving the water cooling sunpender to rotate
Or it moves up and down.
2. vacuum drying oven according to claim 1, which is characterized in that the sealing device is device for sealing magnetic fluid, described
Device for sealing magnetic fluid includes axle sleeve, oiling ring, the first sealing ring and the second sealing ring；
The inner wall of the axle sleeve has been arranged radially annular convex platform, is provided with oil inlet and exhaust outlet on the axle sleeve；
The oiling ring is coaxially disposed in the axle sleeve and one end of the oiling ring and the side phase of the annular convex platform
It abuts, the outer wall of the oiling ring has been arranged radially annular first groove, and inner wall has been arranged radially opposite with first groove
The second groove of annular, first groove is connected to second groove by through-hole, first groove and the oil inlet
Mouth is connected to the exhaust outlet；
The water cooling sunpender is inserted in the oiling ring and can be axially moved relative to the oiling ring；
First sealing ring is sheathed on the one end between the water cooling sunpender and the axle sleeve and being located at the oiling ring, described
One end of oiling ring is abutted against by the side of first sealing ring and the annular convex platform；
Second sealing ring is sheathed on the other end between the water cooling sunpender and the axle sleeve and being located at the oiling ring.
3. vacuum drying oven according to claim 2, which is characterized in that the device for sealing magnetic fluid further include guide sleeve and
It is connected to first pressure ring and the second pressure ring at the axle sleeve both ends；
The guide sleeve is coaxially disposed within the outside in the axle sleeve and being sheathed on the water cooling sunpender, and the one of the guide sleeve
End is connected to the pressure ring, and the other end is connected to the other side of the annular convex platform；
It is provided between the water cooling sunpender and first pressure ring and between the water cooling sunpender and second pressure ring
Dustband.
4. vacuum drying oven according to claim 1, which is characterized in that
The water cooling sunpender is connected to by rotary joint with the water-cooling system；
The water cooling sunpender includes the first tube body and the second tube body for being sheathed on outside first tube body, first tube body and
The circular passage being connected to first tube body is formed between second tube body；
One end of first tube body and second tube body and the rotary joint are rotatablely connected, the interface of the rotary joint
It is connected to respectively with the inlet and outlet of the water-cooling system, cooling water is made to flow into first tube body by the rotary joint,
And the water-cooling system is back to by the circular passage and the rotary joint.
5. vacuum drying oven according to claim 1, which is characterized in that
The water cooling gate valve includes valve plate, and the valve plate is double-layer water jacket structure, and the valve plate has inlet and outlet,
The outlet of the water inlet of the valve plate and the water-cooling system, the import of the water outlet of the valve plate and the water-cooling system
Connection.
6. vacuum drying oven according to claim 1, which is characterized in that
The heater is arranged around the middle part of the furnace core tube；
The vacuum drying oven further includes heat-preservation cylinder, the heat-preservation cylinder be wrapped in the furnace core tube bottom and the heater it is outer
Portion.
7. vacuum drying oven according to claim 1, which is characterized in that
The vacuum system is connected to by filter with the preparation room and the heating room；
The filter includes corrosion-resistant filter core；
The vacuum system includes dry type oil-free vacuum pump group.
8. vacuum drying oven according to claim 1, which is characterized in that
Feeding gate and adjustment door are provided on the preparation room, the feeding gate and the adjustment door are arranged vertically.
9. vacuum drying oven according to claim 7, which is characterized in that
The sensor for detecting the status information whether it closes is provided on the feeding gate and the adjustment door；
The vacuum drying oven further includes control unit, and described control unit is electrically connected with the sensor and the vacuum system respectively
It connects, for receiving the status information of the sensor feedback, and judges to work as the status information as the feeding gate and the tune
When whole door is turned off, the vacuum system starting is controlled；
Vacuum meter is provided between the heating room and the vacuum system, the vacuum meter is indoor for detecting the heating
Vacuum degree；
Described control unit is electrically connected with the vacuum meter, the water cooling gate valve and the driving mechanism respectively；
Described control unit is also used to receive the vacuum degree of the vacuum meter feedback, and judges to be greater than or equal to when the vacuum degree
It when the first preset value, controls the vacuum system and stops starting, the water cooling gate valve is opened, described in the driving mechanism driving
Water cooling sunpender, which moves down, send the workpiece to furnace core tube.
10. vacuum drying oven according to claim 9, which is characterized in that
The temperature measurer for measuring the indoor temperature of heating is provided on the heating room；
Described control unit is electrically connected with the temperature measurer and the heater, the temperature value for being fed back according to the temperature measurer
It is in the second preset value using the heating temperature that pid control mode controls the heater, and the control driving mechanism is driven
Move the water cooling sunpender rotation；And after preset time, controls the heater and stop heating, the driving mechanism stops rotation
Turn, the driving mechanism drives the water cooling sunpender to move up and send the workpiece to preparation room and the water cooling plate
Valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923979.8A CN109163550A (en) | 2018-08-14 | 2018-08-14 | Vacuum drying oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923979.8A CN109163550A (en) | 2018-08-14 | 2018-08-14 | Vacuum drying oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109163550A true CN109163550A (en) | 2019-01-08 |
Family
ID=64895652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810923979.8A Pending CN109163550A (en) | 2018-08-14 | 2018-08-14 | Vacuum drying oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109163550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333892A (en) * | 2021-05-12 | 2021-09-03 | 滁州华海中谊工业炉有限公司 | Vacuum high-temperature brazing furnace for tungsten carbide processing |
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