CN110976858A - Furnace entering protection device - Google Patents
Furnace entering protection device Download PDFInfo
- Publication number
- CN110976858A CN110976858A CN201911411255.6A CN201911411255A CN110976858A CN 110976858 A CN110976858 A CN 110976858A CN 201911411255 A CN201911411255 A CN 201911411255A CN 110976858 A CN110976858 A CN 110976858A
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- Prior art keywords
- box
- butt joint
- sealing
- valve
- lock catch
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- 210000001503 joint Anatomy 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 abstract description 34
- 238000000034 method Methods 0.000 abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 47
- 229910052757 nitrogen Inorganic materials 0.000 description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 19
- 239000001301 oxygen Substances 0.000 description 19
- 229910052760 oxygen Inorganic materials 0.000 description 19
- 239000004033 plastic Substances 0.000 description 14
- 230000003647 oxidation Effects 0.000 description 13
- 238000007254 oxidation reaction Methods 0.000 description 13
- 229910001172 neodymium magnet Inorganic materials 0.000 description 12
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000009461 vacuum packaging Methods 0.000 description 3
- PXAWCNYZAWMWIC-UHFFFAOYSA-N [Fe].[Nd] Chemical compound [Fe].[Nd] PXAWCNYZAWMWIC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000462 isostatic pressing Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 neodymium iron boron rare earth Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/005—Loading or unloading powder metal objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
-
- 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
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/02—Charges containing ferrous elements
- F27M2001/026—Ferromagnetic materials
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a furnace entering protection device which comprises a glove box, a connecting window and a sintering furnace, wherein a protection box is arranged on the sintering furnace, the glove box, the connecting window and the protection box are sequentially connected in a sealing mode, a front butt joint is arranged on the glove box, the connecting window comprises a main frame and a sealing assembly, the main frame and the glove box are mutually clamped and connected and can be in sealing fit with the front butt joint, a rear door is arranged on the protection box, a rear butt joint is arranged on the rear door, the sealing assembly comprises a sealing frame and a valve, and the sealing frame is fixedly connected with the protection box and is in sealing fit with the rear butt joint. The furnace entering protection device integrates various procedures of products, improves the working efficiency, avoids the products from being oxidized when contacting with air, and ensures the product quality.
Description
Technical Field
The invention relates to the technical field of production and manufacturing of neodymium iron boron, in particular to a furnace entering protection device.
Background
The sintered neodymium iron boron is widely applied to various industries such as industrial manufacturing, national defense and military industry, aerospace, consumer electronics, living and home furnishing and the like, has very high magnetic energy density and extremely strong demagnetization resistance, and is a novel high-performance rare earth permanent magnet material.
Meanwhile, the sintered neodymium iron boron is an alloy material with very strong metal activity, and is very easy to react with oxygen in the production and manufacturing process to generate a multi-element oxide, so that the intrinsic performance of the sintered neodymium iron boron permanent magnet material is reduced, and especially the protection in the process before sintering is very important. Along with the gradual rise of the price of the rare earth and the improvement of the requirements on the product performance and the refinement degree of the overall process technology of the industry, the content of the rare earth in the sintered neodymium iron boron is gradually reduced, which means that the protection of the sintered neodymium iron boron from oxidation is increasingly important.
According to the current mainstream production process, the sintered neodymium iron boron is prepared into sintered neodymium iron boron magnetic powder through the processes of proportioning, smelting and melt spinning, hydrogen crushing and powder preparation, the magnetic powder is oriented and formed into a pressed blank, and the pressed blank needs to enter a sintering furnace to be subjected to vacuum high-temperature sintering and heat treatment, and finally the sintered neodymium iron boron rare earth permanent magnet material is prepared.
After the green compact is taken out of the sealed press system, the green compact is very easy to oxidize under the condition of contacting air, the oxidation degrees of products with different sizes are inconsistent, and the smaller the product is, the more serious the oxidation is. Therefore, protection is mostly carried out by adopting a vacuum packaging method at present. The pressed compact is directly placed in a vacuum bag in a pressing machine system, or is placed in a rubber mold firstly and then is placed in the vacuum bag, and the vacuum bag is subjected to air exhaust and heat sealing by a vacuum packaging machine, so that the pressed compact is in a vacuum state in the bag to isolate air.
After the pressed compact in the bag is subjected to isostatic pressing, the pressed compact is stacked in a plastic basket along with the vacuum bag in the first scheme. The protective box door attached to the sintering furnace is opened and the plastic basket with the pressed compact is placed together with the tool to be used. Closing the box door, opening the nitrogen valve to exhaust oxygen to the required range. After the oxygen is discharged in place, the bag is cut, the bag is removed and the box is stacked in the protective box through the cooperative operation of 3-5 persons, and after the completion, the pressed compact loaded in the sintering material box is transferred into the furnace body of the sintering furnace for vacuum sintering. Because the size and space of the protection box attached to the sintering furnace are limited, the number of pressed compacts placed at one time is limited, the box door needs to be opened and placed for multiple times, a large amount of nitrogen needs to be filled before the pressed compacts are placed each time, the nitrogen consumption is large, articles such as static pressure oil, plastic bags, tools, cloth strips and the like can be easily dropped into the protection box, and when the articles are cleaned, the nitrogen in the protection box needs to be emptied, and then workers climb into the protection box to pick up the articles. The nitrogen is colorless and tasteless, and once the nitrogen is not completely discharged, people enter the nitrogen to cause suffocation, so that the nitrogen has great potential safety hazard.
And the second scheme is that the vacuum bags are stacked in a plastic basket together. The product in the plastic basket is transferred to a removable glove box while the tools needed are placed. And closing the box door, tightening the gloves, and opening the nitrogen valve to exhaust oxygen to the required range. After the oxygen is discharged in place, bag cutting, bag removing and box stacking are completed in the movable glove box. And then, putting the sintering material box filled with the pressed compact into a vacuum bag with a larger size in the movable glove box, and fastening the bag opening. And taking out the pressed compact product sleeved with the vacuum bag from the movable glove box, transferring the pressed compact product to a protective box attached to a sintering furnace, taking out the sintering material box filled with the product after cutting the bag, piling the pressed compact product in the protective box in order, and then pushing the pressed compact product into the sintering furnace for vacuum sintering. The method is popular at present, but the method has the disadvantages of consuming a large number of plastic bags, having low working efficiency and being inconvenient for bag sleeving and bag taking due to the heavy weight of products.
And the third scheme is that the vacuum bags are stacked in a plastic basket together. The product in the plastic basket is transferred to a removable glove box while the tools needed are placed. And closing the box door, tightening the gloves, and opening the nitrogen valve to exhaust oxygen to the required range. After the oxygen is discharged in place, bag cutting, bag removing and box stacking are completed in the movable glove box. And transferring the stacked pressed compact products into a furnace entering trolley, pushing the furnace entering trolley to the front of a furnace door of a sintering furnace, opening the furnace door, forking the stacked pressed compact products out of the furnace entering trolley by using a forklift, transferring the pressed compact products into a furnace body of the sintering furnace, and performing vacuum sintering after closing the furnace door. The pressed compact has the chance of contacting air to generate oxidation in the whole process, the contact time and the oxidation degree depend on the speed and proficiency of the process operation, and the product has the risk of unqualified performance.
Most enterprises adopt a scheme II and a scheme III at present, but in the process that the stripping stacking boxes in the scheme II and the scheme III reenter the sintering furnace, turnover must be carried out under the condition of protection, the processes are multiple, the working efficiency is not high, unexpected oxidation can occur, and a new alternative scheme is urgently needed in order to overcome a plurality of defects existing in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a furnace entering protection device, integrates various procedures of products, improves the working efficiency, avoids the products from being oxidized when contacting with air, and ensures the product quality.
In order to achieve the purpose, the invention provides a furnace entering protection device which comprises a glove box, a connecting window and a sintering furnace, wherein a protection box is arranged on the sintering furnace, the glove box, the connecting window and the protection box are sequentially in sealing connection, a front butt joint is arranged on the glove box, the connecting window comprises a main frame and a sealing assembly, the main frame and the glove box are mutually clamped and connected and can be in sealing fit with the front butt joint, a rear door is arranged on the protection box, a rear butt joint is arranged on the rear door, the sealing assembly comprises a sealing frame and a valve, and the sealing frame is fixedly connected with the protection box and is in sealing fit with the rear butt joint.
The innovation points of the technology are mainly expressed as the following aspects: the defects of multiple product processing procedures, low integration degree and low procedure efficiency caused by the fact that a single procedure is produced by a single traditional device are overcome, and the multiple procedures of material stripping, box stacking, stacking and sintering are integrated into a whole, so that the product processing efficiency is greatly improved; because the sintered neodymium iron boron has the characteristics that the sintered neodymium iron boron is oxidized when contacting air in the processing process, the product quality is not high, and the qualification rate is low, the glove box, the connecting window and the protection box are connected to form a common closed space, the product does not need to be turned over in the processing process, the product is conveniently conveyed into the sintering furnace under the condition of not contacting air, the product oxidation is effectively prevented, and the product quality is ensured; the product is stripped and stacked in the glove box, and is conveyed into the protective box through the connecting window without plastic bags and other tools, so that the problem that sundries such as the plastic bags fall into the protective box is solved, and the potential safety hazard that staff are suffocated is eliminated.
Preferably, the sealing assembly further comprises a front pneumatic device and a coupler, the front pneumatic device is connected with the valve through the coupler to achieve up-down movement of the valve, an outer guide rail and an inner guide rail are arranged on the sealing frame, a bearing is arranged at the bottom end of the valve, an adhesive tape is arranged on an outer frame of the valve, two ends of the coupler are located in the outer guide rail, the bearing is located in the inner guide rail, and an inclined opening is formed in the bottom end of the inner guide rail and used for horizontally limiting the bearing to improve sealing performance when the valve is closed.
The innovation points of the technology are as follows: because the glove box and the protection box both work under the vacuum condition of normal temperature, when the glove box and the protection box are connected, the pressure between the interiors of the glove box and the protection box can reach balance, so when the glove box and the protection box are connected, the factors of temperature and pressure difference do not need to be considered, but the connection tightness between the two parties is considered, the connection window adopts a front pneumatic device to control the movement of a valve, the valve adopts a double-guide-rail structure to carry out operation control, an inner guide rail adopts an oblique opening design, when a valve bearing operates to the oblique opening, the transverse reaction force generated by the oblique opening can enable the valve to extrude a rubber strip, the glove box and the connection window are sealed and jointed and clamped with each other, and the effects of fixing and sealing are achieved; adopt such structural design simultaneously, simple structure, the practicality is strong, can effectively prevent that the air from getting into the guard box on the one hand and making the product oxidation, and on the other hand can increase the utilization ratio of glove box.
Preferably, the coupling comprises a cylinder connecting rod and a valve connecting rod, the front pneumatic device is connected with the cylinder connecting rod, two ends of the cylinder connecting rod are located in the outer guide rail, the valve connecting rod comprises a connecting sleeve rod and a connecting piece, one end of the connecting sleeve rod is connected with the cylinder connecting rod, the other end of the connecting sleeve rod is connected with the connecting piece, and the connecting piece is fixedly connected with the valve. In order to realize the double-guide-rail control of the valve, a cylinder connecting rod and a valve connecting rod are adopted to be matched with a bearing at the bottom end of the valve, a front pneumatic device and the valve are connected, and the stability of the connection between the glove box and the protective box is improved.
Preferably, the rear butt joint port is provided with a rear butt joint frame, the rubber strip is positioned on the rear butt joint frame to realize sealing between the valve and the rear butt joint frame, and the sealing frame is welded with the protection box. Because the products are carried out in the whole closed space, and after the box stacking is finished, the products directly enter the protection box through the rear butt joint.
As preferred, the glove box includes transition case and sign indicating number box, preceding butt joint mouth is located the sign indicating number box, preceding butt joint frame that is equipped with on the preceding butt joint mouth, be equipped with outer chamber door on the preceding butt joint frame, the outer chamber door inboard is equipped with the sealing washer, realizes sealed butt joint with the main frame laminating, still be equipped with the hasp on the sign indicating number box, be equipped with the buckle on the main frame, hasp and the mutual joint of buckle. Because there is not pressure differential between glove box and the guard box, therefore only need the joint between hasp and the buckle just can form sealing connection after sealing the laminating of main frame of glove box and connecting window, made things convenient for the non-oxidation operation in the product production process to and the no place restriction of glove box operation, conveniently shell material and sign indicating number box.
Preferably, the inner side of the front butt joint port is further provided with a gate, a rear pneumatic device and a supporting plate, the rear pneumatic device is connected with the gate and drives the gate to move up and down to realize the on-off of the front butt joint port, the supporting plate is located below the gate and limits the gate, the automatic on-off between the front butt joint port and the connecting window is realized, the manual on-off is replaced, and oxygen is prevented from entering the protection box.
Preferably, the lock catch comprises a lock catch pull rod, a lock catch handle and a lock catch mounting seat, the lock catch mounting seat is fixed on the box, the lock catch mounting seat is hinged with the lock catch handle, the lock catch pull rod is hinged with the lock catch handle, the lock catch handle is provided with a limiting strip, and the lock catch pull rod can be limited on the limiting strip. Therefore, the lock catch handle and the lock catch pull rod can rotate in the horizontal direction, when the glove box is disconnected from the connecting window, the lock catch pull rod is limited through the limiting strip after rotating horizontally, the lock catch pull rod is prevented from moving, the outer vertical surface of the glove box is smooth, and the safety is good; when the glove box is connected with the connecting window, the lock catch pull rod is limited through the limiting strip after the lock catch handle rotates horizontally, the stability of the lock catch pull rod connected with the buckle is improved, the stability of connection between the glove box and the connecting window is further improved, the glove box and the connecting window are conveniently detached, and efficient utilization of the glove box is achieved.
Preferably, the stacking box further comprises a support, the stacking box is located on the support, a bottom plate is arranged at the bottom of the support, universal wheels are arranged on the bottom plate, and pedal cover plates are further arranged on two sides of the bottom plate. The invention can move and is convenient to operate.
The invention has the beneficial effects that: the glove box and the protection box are connected to form a common closed space by arranging the connecting window, so that the material stripping, box stacking and sintering processes are integrated, protective turnover is not needed, the working efficiency is improved, the product oxidation is prevented, the operation of opening the door of the sintering furnace for multiple times and filling nitrogen is omitted, the consumption of nitrogen is greatly reduced, the cost is saved, and the problem that sundries such as plastic bags fall into the protection box is also solved, so that the potential safety hazard that staff are suffocated is eliminated; meanwhile, the connecting window adopts the design of double rails and inclined openings, the sealing effect is good during connection, and air is prevented from entering to oxidize products.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic view of the structure of the connection window.
FIG. 4 is a first schematic view of the glove box.
Fig. 5 is a partially enlarged view of a portion a in fig. 4.
FIG. 6 is a schematic view of the glove box.
In the figure: 1-glove box, 2-connecting window, 3-sintering furnace, 4-protective box, 11-front butt joint, 12-lock catch, 13-transition box, 14-box stacking box, 21-main frame, 22-sealing frame, 23-valve, 24-front pneumatic device, 25-shaft coupling, 41-rear door, 111-front butt joint frame, 112-outer box door, 113-sealing ring, 114-gate, 115-rear pneumatic device, 116-supporting plate, 211-buckle, 121-lock pull rod, 122-lock handle, 123-lock catch mounting seat, 124-bolt, 125-limit strip, 126-bracket, 127-bottom plate, 128-universal wheel, 129-pedal cover plate, 221-outer guide rail, 222-inner guide rail, 223-top cover plate, 224-bottom closing plate, 225-side plate, 226-front plate, 227-side closing plate, 228-bevel opening, 231-bearing bracket, 232-bearing, 251-cylinder connecting rod, 252-connecting loop rod, 253-connecting piece, 411-rear butt joint opening, 412-rear butt joint frame and 413-adhesive tape.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1 to 6, the present embodiment provides a furnace entering protection device, which includes a glove box 1, a connection window 2 and a sintering furnace 3, wherein a protection box 4 is disposed on the sintering furnace 3, the glove box 1, the connection window 2 and the protection box 4 are sequentially and hermetically connected, the connection window 2 includes a main frame 21 and a sealing assembly, a front butt joint 11 is disposed on the glove box 1, a front butt joint frame 111 is disposed on the front butt joint 11, an outer box door 112 is disposed on the front butt joint frame 111, a sealing ring 113 is disposed on an inner side of the outer box door 112 and can be attached to the main frame 21, a lock catch 12 is further disposed on the glove box 1, a buckle 211 is disposed on the main frame 21, the lock catch 12 and the buckle 211 are mutually clamped, thereby realizing detachable and sealed dual connection of the glove box;
be equipped with back door 41 on the guard box 4, be equipped with back to interface 411 on the back door 41, be equipped with back butt joint frame 412 on the back butt joint 411, be equipped with adhesive tape 413 on the back butt joint frame 412, sealing assembly includes sealing frame 22 and valve 23, and the laminating of valve 23 and back butt joint frame 412 is passed through adhesive tape 413 and is realized sealed, sealing frame 22 and the welding of guard box 4.
As a preferred embodiment, the sealing assembly further includes a front pneumatic device 24 and a coupling 25, the front pneumatic device 24 is connected to the valve 23 through the coupling 25 to achieve the up-and-down movement of the valve 23, the sealing frame 22 is provided with an outer guide rail 221 and an inner guide rail 222, the bottom end of the valve 23 is provided with a bearing support 231, the bearing support 231 is connected with a bearing 232, two ends of the coupling 25 are provided with bearings, the bearings are located in the outer guide rail 221, the bearing 232 is located in the inner guide rail 222, the bottom end of the inner guide rail 222 is provided with a triangular bevel 228 for horizontally limiting the bearing 232 to improve the sealing performance when the valve 23 is closed, which is different from the plate gate valve connected between the sintering furnace and the protection box in the prior art, because the temperature in the sintering furnace can reach over 1000 ℃, the plate gate valve needs to be provided with a heat insulating material, and needs to be cooled after the sintering furnace is operated, the pressure difference between the sintering furnace and, therefore, the sintering furnace and the protection box need to be fixedly connected by bolts, but the bolts are inconvenient to disassemble in a fixed connection mode, so that the connection between the protection box and the glove box is in a clamping connection mode, the convenience in installation and disassembly is realized, and the sealing and detachable connection between the glove box and the protection box is realized by combining the design of the double guide rails and the bevel opening.
In a preferred embodiment, the coupling 25 includes a cylinder connecting rod 251 and a valve connecting rod, the front pneumatic device 24 is connected to the cylinder connecting rod 251, two ends of the cylinder connecting rod 251 are located in the outer guide rail 221, the valve connecting rod includes a connecting sleeve rod 252 and a connecting piece 253, one end of the connecting sleeve rod 252 is connected to the cylinder connecting rod 251, the other end is connected to the connecting piece 253, and the connecting piece 253 is fixedly connected to the valve 23.
As a preferred embodiment, the sealing frame 22 further includes a top cover plate 223, a bottom cover plate 224, a side plate 225, a front plate 226 and side cover plates 227, the outer guide rail 221 and the inner guide rail 222 are located on the side plate 225, the front pneumatic device 24 pushes the valve 23 to move up and down in the form of a cylinder and a pull rod, the cylinder is located on the top cover plate 223, the side cover plates 227 are located on two sides of the front plate 226 and are respectively connected with the main frame 21 and the bottom cover plate 224, the bottom cover plate 224 and the side plate 225 are both welded to the protection box 4, the bottom cover plate 224 can be provided with a rail, a conveyer belt or other device capable of automatically conveying products, so that the products can be automatically conveyed into the protection box 4 after entering the connecting window.
As a preferred embodiment, the glove box 1 includes a transition box 13 and a box stacking box 14, the transition box 13 and the box stacking box 14 can be opened and closed, the front butt joint port 11 is located on the box stacking box 14, a gate 114, a rear pneumatic device 115 and a support plate 116 are further arranged on the inner side of the front butt joint port 11, the rear pneumatic device 115 and the front pneumatic device 24 are identical in structure, a guide rail is further arranged on the inner side of the front butt joint port 11, the rear pneumatic device 115 is connected with the gate 114 and drives the gate 114 to move in the guide rail to open and close the front butt joint port 11, and the support plate 116 is fixed on the glove box 1 and located below the gate 114 to limit the gate 114.
As a preferred embodiment, the lock 12 includes a lock pull rod 121, a lock handle 122 and a lock installation seat 123, the lock installation seat 123 is fixed on the storage box 14, the lock handle 122 is hinged to the lock installation seat 123, two ends of the bolt 124 penetrate through the lock handle 122 and then are connected to the lock pull rod 121, so that the lock handle 122 and the lock pull rod 121 horizontally rotate, the lock handle 122 is provided with a limit strip 125, and the lock handle 122 is limited by the limit strip 125.
In a preferred embodiment, a support 126 is arranged below the box container 14, a bottom plate 127 is arranged at the bottom of the support 126, universal wheels 128 are arranged on the bottom plate 127, and pedal cover plates 129 are arranged on two sides of the bottom plate 127.
The working process of the embodiment is as follows: after the pressed compact is subjected to isostatic pressing through vacuum packaging, an outer bag is cut off and packaged in a plastic basket and is placed in a closed transition box 13, the transition box 13 is connected with an oxygen control instrument, an inflation inlet and an exhaust outlet, after oxygen is discharged in place, the transition box 13 is communicated with a code box 14 and is transferred into the code box 14 in which oxygen is discharged in advance to carry out code box, after the code box is finished, an outer box door 112 is opened to connect and fix the code box 14 and a connecting window 2 through a lock catch 12 and a buckle 211, the seal between the code box 14 and the connecting window 2 is realized through a seal ring 113, then the gate 114 and a valve 23 are opened to connect the code box 14, the connecting window 2 and a protection box 4 to form a common closed space, after the code box is finished, the code box directly enters the protection box 4 through the connecting window 2 to be stacked and then is pushed into a sintering furnace 3, the whole process does not need to be subjected to intermediate turnover, the integration degree is high, plastic bags and other tools can not be brought in, the problem that sundries such as the plastic bags and the like fall into the protective box 4 is solved, and the potential safety hazard that staff are suffocated is eliminated; after the product conveying is accomplished, close valve 23, move to bevel connection department when valve 23, the horizontal reaction force that the bevel connection produced makes valve 23 extrude adhesive tape 413, reaches sealed effect, unloads portable glove box 1 again, can not cause the entering air in the guard box 4 to make the product take place the oxidation, when having guaranteed the product conveying with each part inner space's after the conveying non-oxidation, avoid filling many times nitrogen gas oxygen removal and need consume a large amount of nitrogen gas.
The invention is further described below by means of specific experimental data,
firstly, product specification: D9.53X 33.7T (unit mm)
1. Nitrogen saving (unit: weight of nitrogen consumed per kg product)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Average nitrogen consumption | 1.30 | 2.56 | 2.10 | 1.85 |
2. Product Property (average)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Br（kGs） | 14.22 | 14.20 | 14.10 | 14.02 |
| Hcj（kOe） | 17.88 | 17.58 | 16.86 | 15.83 |
| (BH)ma（MGOe） | 48.50 | 48.07 | 47.45 | 46.94 |
| Hk/Hcj | 0.98 | 0.95 | 0.94 | 0.89 |
3. Magnet oxygen content (average)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Oxygen content (ppm) | 683 | 890 | 1540 | 3290 |
4. Percent of pass
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Percent of pass | 99.91% | 96.37% | 92.66% | 98.15% |
II, product specification: D15T (unit is mm)
1. Nitrogen saving (unit: weight of nitrogen consumed per kg product)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Average nitrogen consumption | 1.12 | 2.40 | 2.03 | 1.80 |
2. Product Property (average)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Br（kGs） | 14.62 | 14.58 | 14.47 | 14.31 |
| Hcj（kOe） | 13.88 | 13.21 | 12.66 | 11.83 |
| (BH)ma（MGOe） | 51.59 | 50.77 | 50.05 | 49.34 |
| Hk/Hcj | 0.99 | 0.96 | 0.95 | 0.91 |
3. Magnet oxygen content (average)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Oxygen content (ppm) | 674 | 860 | 1640 | 2990 |
4. Percent of pass
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Percent of pass | 99.93% | 97.37% | 94.66% | 98.88% |
Thirdly, product specification: 60X 42X 36T (unit mm)
1. Nitrogen saving (unit: weight of nitrogen consumed per kg product)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Average nitrogen consumption | 1.08 | 2.32 | 1.93 | 1.76 |
2. Product Property (average)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Br（kGs） | 14.18 | 14.15 | 14.05 | 13.93 |
| Hcj（kOe） | 21.59 | 21.01 | 20.66 | 18.83 |
| (BH)max（MGOe） | 48.69 | 48.12 | 47.75 | 47.14 |
| Hk/Hcj | 0.99 | 0.96 | 0.95 | 0.92 |
3. Magnet oxygen content (average)
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Oxygen content (ppm) | 574 | 885 | 1440 | 2550 |
4. Percent of pass
| Charging mode | The technical scheme | Scheme one | Scheme two | Scheme three |
| Percent of pass | 99.89% | 97.17% | 93.26% | 98.56% |
Wherein: br is remanence, Hcj is coercive force, (BH) max is maximum magnetic energy product, and Hk/Hcj is squareness coefficient, which are main technical indexes of the magnetic performance of the neodymium iron shed.
Through the experimental data test to the neodymium iron canopy of above-mentioned three kinds of specifications, can show that no matter be the saving amount of nitrogen, produce property ability, magnet oxygen content or qualification rate, it is the optimal technical scheme to have all embodied this technical scheme, especially the saving amount of nitrogen gas can reduce to about 50% of scheme one even, and the qualification rate also reaches about 99.91%, effectively protects neodymium iron boron not by the oxidation, practices thrift manufacturing cost greatly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A protection device goes into stove which characterized in that: including glove box, connection window and fritting furnace, be equipped with the guard box on the fritting furnace, glove box, connection window and guard box be sealing connection in proper order, be equipped with preceding butt joint on the glove box, the connection window includes main frame and seal assembly, main frame and the mutual joint of glove box, and can with preceding butt joint sealing laminating, be equipped with the back door on the guard box, be equipped with back butt joint on the back door, seal assembly includes sealing frame and valve, sealing frame and guard box fixed connection, and with the sealed laminating of back butt joint.
2. A furnace entry protection device as claimed in claim 1, wherein: the sealing assembly further comprises a front pneumatic device and a coupler, the front pneumatic device is connected with the valve through the coupler, the valve is moved up and down, an outer guide rail and an inner guide rail are arranged on the sealing frame, a bearing is arranged at the bottom end of the valve, an adhesive tape is arranged on the outer frame of the valve, two ends of the coupler are located in the outer guide rail, the bearing is located in the inner guide rail, and an inclined opening is formed in the bottom end of the inner guide rail and used for horizontally limiting the bearing and improving the sealing performance of the valve when the valve is closed.
3. A furnace entry protection device as claimed in claim 2, wherein: the coupling comprises a cylinder connecting rod and a valve connecting rod, the front pneumatic device is connected with the cylinder connecting rod, two ends of the cylinder connecting rod are located in the outer guide rail, the valve connecting rod comprises a connecting sleeve rod and a connecting piece, one end of the connecting sleeve rod is connected with the cylinder connecting rod, the other end of the connecting sleeve rod is connected with the connecting piece, and the connecting piece is fixedly connected with the valve.
4. A furnace entry protection device as claimed in claim 2, wherein: the rear butt joint port is provided with a rear butt joint frame, the rubber strip is positioned on the rear butt joint frame to realize sealing between the valve and the rear butt joint frame, and the sealing frame is welded with the protection box.
5. A furnace entry protection device as claimed in claim 1 or 2, wherein: the glove box comprises a transition box and a code box, wherein the front butt joint port is located on the code box, a front butt joint frame is arranged on the front butt joint port, an outer box door is arranged on the front butt joint frame, a sealing ring is arranged on the inner side of the outer box door, the sealing butt joint is realized by the outer box door and the main frame, a lock catch is further arranged on the code box, a buckle is arranged on the main frame, and the lock catch and the buckle are mutually clamped to realize detachable connection of the glove box and the connecting window.
6. A furnace entry protection device as claimed in claim 5, wherein: the inner side of the front butt joint is also provided with a gate, a rear pneumatic device and a supporting plate, the rear pneumatic device is connected with the gate and drives the gate to move up and down to realize the on-off of the front butt joint, and the supporting plate is positioned below the gate and limits the gate.
7. A furnace entry protection device as claimed in claim 5, wherein: the lock catch comprises a lock catch pull rod, a lock catch handle and a lock catch mounting seat, the lock catch mounting seat is fixed on the code box, the lock catch mounting seat is hinged with the lock catch handle, the lock catch pull rod is hinged with the lock catch handle, the lock catch handle is provided with a limiting strip, and the lock catch pull rod can be limited on the limiting strip.
8. A furnace entry protection device as claimed in claim 5, wherein: the stacking box is characterized by further comprising a support, the stacking box is located on the support, a bottom plate is arranged at the bottom of the support, universal wheels are arranged on the bottom plate, and pedal cover plates are further arranged on two sides of the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911411255.6A CN110976858A (en) | 2019-12-31 | 2019-12-31 | Furnace entering protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911411255.6A CN110976858A (en) | 2019-12-31 | 2019-12-31 | Furnace entering protection device |
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| CN110976858A true CN110976858A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911411255.6A Pending CN110976858A (en) | 2019-12-31 | 2019-12-31 | Furnace entering protection device |
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Cited By (1)
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| CN114643358A (en) * | 2022-03-29 | 2022-06-21 | 山西大缙华磁性材料有限公司 | Furnace charging device for sintering neodymium iron boron magnet |
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