CN115200365A - Sintering device with symmetrical flow guide structure - Google Patents

Sintering device with symmetrical flow guide structure Download PDF

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Publication number
CN115200365A
CN115200365A CN202210823566.9A CN202210823566A CN115200365A CN 115200365 A CN115200365 A CN 115200365A CN 202210823566 A CN202210823566 A CN 202210823566A CN 115200365 A CN115200365 A CN 115200365A
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China
Prior art keywords
space
flow guide
casing
sintering
shell
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Granted
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CN202210823566.9A
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Chinese (zh)
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CN115200365B (en
Inventor
李文强
王佳伟
赵迎新
周兴
刘英东
万昌富
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Sichuan University
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Sichuan University
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Publication of CN115200365A publication Critical patent/CN115200365A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00Furnaces of a kind not covered by any preceding group
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/18Door frames; Doors, lids, removable covers
    • F27D1/1858Doors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02Supplying steam, vapour, gases, or liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02Supplying steam, vapour, gases, or liquids
    • F27D2007/023Conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27MINDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00Type of treatment of the charge
    • F27M2003/04Sintering

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)

Abstract

The invention provides a sintering device with a symmetrical flow guide structure, and relates to the technical field of sintering. The sintering device with the symmetrical flow guide structure comprises a first shell, a second shell, an air inlet pipe, a heating element and a plurality of flow guide elements. Form first preheating space between second casing and first casing, the one end of intake pipe sets up outside first casing, the other end sets up in first preheating space and with first preheating space intercommunication, the heating member sets up in first preheating space, be used for the gaseous heating in the first preheating space, so that the gaseous infiltration of heating to the second casing in from first preheating space, locate the outer wall of second casing through a plurality of water conservancy diversion spare interval rings, so that gaseous flow to the periphery wall of second casing under the water conservancy diversion effect of a plurality of water conservancy diversion spare uniformly after getting into first presetting space, thereby make gaseous infiltration to the sintering space in the second casing uniformly, guarantee that the sintering work piece sinters under even temperature environment, the sintering quality of sintering work piece has been improved.

Description

Sintering device with symmetrical flow guide structure
Technical Field
The invention relates to the technical field of sintering, in particular to a sintering device with a symmetrical flow guide structure.
Background
In the sintering industry, a sintering furnace is usually used to sinter articles such as cemented carbide and ceramic materials. The sintering furnace realizes sintering operation by conveying heating gas to the outside of the permeable layer and enabling the heating gas to enter the internal sintering space through the permeable layer, however, the gas conveyed to the outside of the permeable layer by the conventional sintering furnace is not uniformly distributed, so that the gas is not uniformly permeated into the sintering space, the gas and temperature distribution in the sintering space are not uniform, and the sintering quality of a sintered object is seriously influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a sintering apparatus having a symmetrical flow guide structure, which allows gas to be uniformly distributed in a preheating space and to uniformly permeate into a sintering space in a first housing.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a sintering apparatus with a symmetrical flow guiding structure, comprising:
a first housing;
the second shell is arranged in the first shell, a first preheating space is formed between the outer side wall of the second shell and the inner side wall of the first shell, and the second shell is used for accommodating a sintering workpiece;
one end of the air inlet pipe is arranged outside the first shell, and the other end of the air inlet pipe is arranged in the first preheating space and communicated with the first preheating space;
a heating member provided in the first preheating space for heating the gas in the first preheating space to allow the heated gas to permeate from the first preheating space into the second housing, and,
and the flow guide pieces are annularly arranged on the outer wall of the second shell at intervals so as to enable the gas to uniformly permeate into the second shell.
In an optional embodiment, the plurality of flow guiding pieces are symmetrically arranged at two circumferential sides of the second shell at intervals, and the plurality of flow guiding pieces are arranged in a pairwise opposite manner in the axial direction of the second shell;
the air inlet pipe is arranged in the center of the top of the first preheating space, and the plurality of flow guide pieces located on two sides of the circumferential direction of the second shell are symmetrically arranged relative to the air inlet pipe.
In an optional embodiment, the air inlet pipe includes a first pipe section and a second pipe section, one end of the first pipe section is disposed outside the first casing, the other end of the first pipe section is connected to the second pipe section, the second pipe section is provided with a plurality of air outlets, and the plurality of air outlets are respectively arranged on the plurality of flow guiding members circumferentially disposed on two sides of the second casing.
In optional embodiment, the one end of water conservancy diversion spare is provided with the portion of holding back that is the arc form, the portion of holding back with at least part the venthole corresponds, the other end of water conservancy diversion spare set up in the tip of second casing, the water conservancy diversion spare is along keeping away from the extending direction slope of intake pipe sets up downwards.
In an alternative embodiment, the radii of circles on which the interception portions of the plurality of flow guide members are located increase in sequence in the circumferential direction on the second housing away from the intake pipe.
In an optional embodiment, the sintering device with the symmetrical flow guide structure further comprises furnace doors, wherein the furnace doors are arranged at two ends of the first shell and the second shell;
the furnace gate includes the furnace gate body and protruding the first door body of furnace gate body of locating, the first door body is provided with the second and preheats the space, and the through-hole has been seted up to the lateral wall of the first door body, first preheat the space with the second preheats the space and passes through the through-hole intercommunication, the diameter of the first door body with the external diameter of second casing is unanimous, the first door body is used for sealing the second casing makes gas preheats the space from the second and permeates to in the second casing.
In an alternative embodiment, the sintering device with the symmetrical flow guide structure further comprises an outer shell, wherein the outer shell is arranged outside the first shell, and a first heat preservation space is formed between the outer shell and the first shell;
the furnace door still includes the second door body, the second door body set up in the furnace door body with between the first door body, the second door body be provided with the second heat preservation space of first heat preservation space intercommunication, the second door body is used for sealing the first space of preheating, the furnace door body is used for sealing first heat preservation space.
In an alternative embodiment, the sintering device with the symmetrical flow guide structure further comprises an object stage and a shell, wherein the object stage is arranged in the second shell, and the shell is arranged outside the first shell;
the protruding supporting part that is equipped with of objective table, the supporting part is used for bearing the sintering work piece the objective table the region beyond the supporting part has seted up a plurality of exhaust holes, the bottom of objective table be provided with a plurality of blast pipes of a plurality of gas vent one-to-one intercommunication, the one end of a plurality of blast pipes all wears to locate in proper order the second casing outside first casing and the shell.
In an optional embodiment, the sintering device with the symmetrical flow guide structure further comprises a wax collecting box, the wax collecting box is arranged outside the shell and comprises an accommodating space and a discharge port, and the plurality of exhaust pipes and the discharge port are both communicated with the accommodating space.
In an alternative embodiment, two ends of the heating members are respectively connected to two ends of the first housing, and at least one of the heating members is disposed between two adjacent flow guide members.
The sintering device with the symmetrical flow guide structure provided by the embodiment of the invention has the beneficial effects that: the outer wall of the second shell is arranged through the plurality of guide pieces, so that gas can uniformly flow to the outer peripheral wall of the second shell under the guide effect of the plurality of guide pieces after entering the first preset space, the gas can uniformly permeate into the sintering space in the second shell, sintering of the sintering workpiece in a uniform temperature environment is guaranteed, the uniformity of a temperature field and an atmosphere field is improved, and the sintering quality of the sintering workpiece is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a sintering apparatus with a symmetrical flow guiding structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a sintering apparatus with a symmetrical flow-guiding structure according to an embodiment of the present invention;
FIG. 3 is a second schematic cross-sectional view of a sintering apparatus with a symmetrical flow guiding structure according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a second housing and a flow guide member according to an embodiment of the present invention;
FIG. 5 is a schematic view of an intake manifold according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a furnace door according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an object stage according to an embodiment of the present invention.
Icon: 10-a sintering device with a symmetrical flow guide structure; 100-a housing; 110-a first insulation space; 200-a first housing; 210 — a first preheating space; 300-a second housing; 310-a sintering space; 400-air inlet pipe; 410-a first tube segment; 420-a second pipe section; 421-air outlet holes; 422-first section; 423-a second segment; 424-third section; 500-a heating element; 600-a flow guide member; 610-a trap; 700-oven door; 710-oven door body; 720-a first door body; 721-a second preheating space; 722-through holes; 730-a second door body; 731-a second insulation space; 800-an object stage; 810-a support portion; 820-exhaust holes; 830-an exhaust pipe; 900-wax collecting box; 910-an accommodating space; 920-discharge port.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the present invention is used to usually place, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, the invention provides a sintering device 10 with a symmetrical flow guiding structure, which is applied to the field of sintering and widely used in industrial production of materials such as hard alloy and ceramic. The sintering device 10 with the symmetrical flow guide structure can enable the heated high-temperature gas to be uniformly distributed and to uniformly permeate into the sintering space 310, so that the sintering workpiece is sintered in an environment with a uniform temperature field, and the sintering quality of the sintering workpiece is improved.
Further, referring to fig. 2 to 4, the sintering device 10 with a symmetrical flow guiding structure includes a housing 100, a first housing 200, a second housing 300, an air inlet pipe 400, a heating element 500, a flow guiding element 600, a furnace door 700, an object stage 800, a wax collecting box 900, and the like.
The outer shell 100 is disposed outside the first shell 200, the second shell 300 is disposed inside the first shell 200, the oven door 700 is disposed at two ends of the outer shell 100, the first shell 200, and the second shell 300, and the wax collecting box 900 is disposed outside the outer shell 100. The air inlet pipe 400, the heating member 500 and the air guide member 600 are disposed between the first housing 200 and the second housing 300, and the stage 800 is disposed in the second housing 300.
Further, a first insulation space 110 is formed between an outer sidewall of the first housing 200 and an inner sidewall of the outer case 100, a first preheating space 210 is formed between an outer sidewall of the second housing 300 and an inner sidewall of the first housing 200, the second housing 300 includes a sintering space 310, and the sintering space 310 is used for accommodating a sintered workpiece.
In this embodiment, the gas inlet pipe 400 is used for delivering normal temperature gas to the first preheating space 210, the heating element 500 heats the gas, and the gas permeates from the outside of the second housing 300 to the sintering space 310 under the action of the flow guide member 600, so as to sinter the sintered workpiece accommodated in the sintering space 310.
In this embodiment, the first casing 200 is a heat-insulating casing, and the heat-insulating casing can insulate the first preheating space 210 to reduce heat transfer to the outside. The second housing 300 may be a graphite housing to facilitate gas permeation. Of course, in other embodiments, the second casing 300 may be made of other gas permeable materials, and the second casing 300 is not limited in this respect.
The housing 100, the first casing 200, and the second casing 300 are all cylindrical and are all horizontally disposed.
Further, one end of the air inlet pipe 400 is disposed outside the first housing 200, and the other end is disposed in the first preheating space 210 and communicated with the first preheating space 210, so as to heat the first preheating space 210 through the air inlet pipe 400.
Further, the heating member 500 is disposed in the first preheating space 210, and is used for heating the gas entering the first preheating space 210 through the gas inlet pipe 400, so that the heated gas permeates from the first preheating space 210 to the sintering space 310 in the second housing 300.
In this embodiment, the number of the flow guiding members 600 includes a plurality of flow guiding members 600, which are disposed on the outer wall of the second housing 300 at intervals, so that the gas can uniformly flow to the outer peripheral wall of the second housing 300 under the flow guiding effect of the plurality of flow guiding members 600 after entering the first preset space, and thus the gas can uniformly permeate into the sintering space 310 in the second housing 300, the sintering of the sintered workpiece can be ensured to be performed under a uniform temperature environment, the uniformity of the temperature field and the atmosphere field can be improved, and the sintering quality of the sintered workpiece can be improved.
Further, the plurality of flow guides 600 are symmetrically and alternately disposed at two circumferential sides of the second housing 300, in other words, the plurality of flow guides 600 are circumferentially disposed at an outer wall of the second housing 300 at an interval, and the plurality of flow guides 600 are symmetrically disposed about an axial vertical cross section of the second housing 300. The plurality of air guides 600 are disposed opposite to each other in the axial direction of the second housing 300, in other words, the plurality of air guides 600 are distributed at both ends of the second housing 300, and the plurality of air guides 600 located at both ends of the second housing 300 are disposed symmetrically with respect to the vertical plane of the axial direction of the second housing 300.
Further, the intake duct 400 is disposed at the top center of the first preheating space 210, and the plurality of flow guides 600 located at both sides of the second housing 300 in the circumferential direction are symmetrically disposed with respect to the intake duct 400.
In this embodiment, the gas is supplied to the preset space through the gas inlet pipe 400 disposed at the center of the first preheating space 210, the gas uniformly flows to the first preheating space 210 at both sides outside the second housing 300 under the flow guiding effect of the plurality of flow guiding members 600 symmetrically disposed about the axial vertical cross-section of the second housing 300 after entering the first preheating space 210, and the gas uniformly flows to both ends of the second housing 300 through the plurality of flow guiding members 600 symmetrically disposed about both ends of the second housing 300 in the first preheating space 210 at each side, so that the gas is uniformly distributed in the first preheating space 210 outside the entire second housing 300, and thus the gas uniformly permeates into the sintering space 310.
Further, referring to fig. 5, the intake pipe 400 includes a first pipe section 410 and a second pipe section 420, one end of the first pipe section 410 is disposed outside the first casing 200, and the other end is connected to the second pipe section 420, the second pipe section 420 is provided with a plurality of air outlets 421, and the plurality of air outlets 421 face the plurality of flow guides 600 circumferentially disposed on two sides of the second casing 300 respectively.
In this embodiment, the second pipe segment 420 includes a first segment 422, a second segment 423, and a third segment 424, and both ends of the second segment 423 are respectively connected to the middle portions of the first segment 422 and the third segment 424, so that the second pipe segment 420 has an H shape. The first pipe segment 410 is vertically disposed and connected to the second segment 423 of the second pipe segment 420. The first and third segments 422 and 424 extend in the same direction as the axial direction of the second housing 300, and a plurality of air outlets are provided at the first and third segments 422 and 424 at equal intervals.
In this embodiment, the gas enters from the first pipe section 410, and enters the first preheating space 210 through the second pipe section 420 in a direction toward the plurality of heating members 500 located at both sides of the second housing 300, and is heated by the heating members 500.
Further, the guide member 600 has a long plate shape. One end of the flow guide member 600 is provided with an arc-shaped interception portion 610, the interception portion 610 corresponds to at least part of the air outlet holes 421, the other end of the interception portion is arranged at the end of the second housing 300, and the flow guide member 600 is obliquely and downwardly arranged along the extending direction far away from the air inlet pipe 400.
In this embodiment, the arc-shaped inner concave surface of the trap portion 610 faces the air inlet pipe 400, and under the condition that the air flows from the air outlet hole 421 to both sides of the circumference of the second housing 300, the trap portion 610 can make the air flow toward the flow guide 600 more easily, and the flow guide 600 is disposed obliquely, which is beneficial to the air flow further toward the first preheating space 210 at both ends, so that the air is uniformly distributed in the first preheating space 210.
Further, in the circumferential direction away from the air inlet pipe 400 on the second housing 300, the radiuses of the circles where the cut-offs 610 of the plurality of baffle members 600 are located increase in sequence.
In this embodiment, the radius of the circle where the trap portion 610 of the baffle 600 near the outlet hole 421 is located is the smallest, and the length of the baffle 600 is the longest; and the radius of the circle where the interception parts 610 of the plurality of flow guide pieces 600 far away from the air inlet hole are located is sequentially increased, and meanwhile, the length of the plurality of flow guide pieces 600 far away from the air inlet hole is also sequentially increased, so that the length difference of the two adjacent flow guide pieces 600 is realized. And the gas flows along the circumferential direction of the second housing 300 away from the intake pipe 400, and is favorable to intercepting the gas through the intercepting part 610 by being provided with above, so that the gas flows along the flow guide member 600 corresponding to the intercepting part 610, thereby ensuring that the gas is uniformly distributed in the first preheating space 210.
Further, two ends of the heating element 500 are respectively connected with two ends of the first casing 200, at least one heating element 500 is arranged between two adjacent flow guide elements 600, and the area between two adjacent flow guide elements 600 is equally divided, so that the gas can be divided into a certain flow by the heating element 500 under the condition that the gas enters the area between two adjacent flow guide elements 600, and the distribution uniformity of the gas in the first preheating space 210 is further improved.
Specifically, two or three heating members 500 are generally disposed between adjacent two of the guide members 600.
Further, referring to fig. 6, the oven door 700 includes an oven door body 710, a first door body 720 and a second door body 730. Wherein, the number of the oven doors 700 is two, and the two oven doors 700 are disposed at both ends of the housing 100.
The first door body 720 is convexly arranged on one side of the oven door body 710 facing the sintering space 310, the first door body 720 is provided with a second preheating space 721, a through hole 722 is formed in a side wall of the first door body 720, the first preheating space 210 is communicated with the second preheating space 721 through the through hole 722, and the first door body 720 is used for sealing the second housing 300 and enabling gas to permeate into the second housing 300 from the second preheating space 721.
In this embodiment, the diameter of the first door body 720 is consistent with the outer diameter of the second housing 300, so that when the oven door 700 is closed, the first door body 720 just closes the sintering space 310, and gas is prevented from overflowing from the sintering space 310 to the first preheating space 210.
In this embodiment, the gas entering the first preheating space 210 flows toward the second casing 300, i.e. both ends of the first preheating space 210, along the flow guiding element 600, the gas at both ends can enter the second preheating space 721 from the first preheating space 210 through the through holes 722, and permeate into the sintering space 310 from the second preheating space 721, that is, the gas can permeate into the sintering space 310 not only along the circumferential direction of the second casing 300, but also from both ends of the second casing 300, so that the heating gas can permeate into the sintering space 310 uniformly from all directions of the second casing 300, which not only makes the gas distributed in the first preheating space 210 more uniform, but also makes the gas permeated into the sintering space 310 more uniform, thereby effectively improving the sintering quality of the sintered workpiece.
The second casing 300 and the first door 720 are made of the same material, so that smooth permeation of gas can be ensured, and adverse effects due to different materials can be reduced.
Further, the second door body 730 is disposed between the oven door body 710 and the first door body 720, a second heat-preserving space 731 communicated with the first heat-preserving space 110 is disposed between the second door body 730 and the oven door body 710, the second door body 730 is used for sealing the first preheating space 210, and the oven door body 710 is used for sealing the first heat-preserving space 110.
In this embodiment, the first door body 720 and the second door body 730 are sequentially protruded on the oven door body 710 to form a step shape. The diameter of the second door body 730 is consistent with the outer diameter of the first housing 200, so that when the oven door 700 is closed, the second door body 730 just closes the first preheating space 210 and the second preheating space 721, and the oven door body 710 closes the first heat-preserving space 110 and the second heat-preserving space 731. In other words, the door body 710 and the outer case 100 are separately disposed outside the second door body 730 and the first outer case 100, so that it is possible to reduce heat transfer in the first preheating space 210 and the second preheating space 721 to the outside, thereby ensuring temperature stability in the first preheating space 210 and the second preheating space 721.
Further, referring to fig. 2, 3 and 7, the object stage 800 is disposed in the first preheating space 210 in the second housing 300. The protruding supporting portion 810 that is equipped with of objective table 800, supporting portion 810 are used for bearing the sintering work piece, have seted up a plurality of exhaust holes 820 in the region beyond the supporting portion 810 of objective table 800, and the bottom of objective table 800 is provided with a plurality of blast pipes 830 that communicate with a plurality of gas vents one-to-one, and the one end of a plurality of blast pipes 830 all wears to locate in proper order outside second casing 300, first casing 200 and the shell 100.
In the embodiment, the supporting portion 810 is in a shape of a prism, the sintered workpiece is supported by the protruding supporting portion 810, and the plurality of exhaust holes 820 are formed in the region outside the supporting portion 810, so that the sintered workpiece can be prevented from blocking the exhaust holes 820 to affect the exhaust efficiency. It should be noted that a plurality of exhaust holes 820 and a plurality of exhaust pipes 830 are distributed in an array, the exhaust holes 820 are used for exhausting waste gas such as wax gas generated in the sintering process, and the exhaust pipes 830 also serve to support the stage 800.
Further, the wax collecting box 900 is disposed outside the housing 100, the wax collecting box 900 includes an accommodating space 910 and a discharge port 920, and the plurality of exhaust pipes 830 and the discharge port 920 are both communicated with the accommodating space 910.
In this embodiment, the wax collecting box 900 is arranged to intensively treat waste gas such as wax gas, thereby facilitating treatment. It is understood that a filtering, cleaning, etc. device may be provided in the wax collecting box 900 to filter and clean the exhaust gas such as wax gas.
In practical application, gas enters the first preheating space 210 through the gas inlet pipe 400, the gas is uniformly distributed in the first preheating space 210 through the flow guide member 600 and is heated by the heating member 500, most of the heated gas permeates into the sintering space 310 through the second shell 300 in the first preheating space 210, at the same time, a small part of the gas enters the second preheating space 721 through the through holes 722 and permeates into the sintering space 310 through the first door body 720 in the second preheating space 721, and thus sintering workpieces in the sintering space 310 are sintered. Exhaust gases such as wax gas generated during the sintering process are discharged to the wax receiving box 900 through an exhaust port and an exhaust pipe 830 provided on the stage 800, and finally, the exhaust gases such as wax gas are collectively discharged through a discharge port.
In summary, the embodiment of the present invention provides a sintering apparatus 10 with a symmetric flow guiding structure, wherein the plurality of flow guiding elements 600 are disposed on the outer wall of the second housing 300 in a spaced manner, so that gas after entering the first predetermined space flows uniformly to the outer peripheral wall of the second housing 300 under the flow guiding effect of the plurality of flow guiding elements 600, and thus the gas uniformly permeates into the sintering space 310 in the second housing 300, the sintering of the sintering workpiece is ensured to be performed in a uniform temperature environment, the uniformity of the temperature field and the atmosphere field is improved, and the sintering quality of the sintering workpiece is improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A sintering device with a symmetrical flow guide structure is characterized by comprising:
a first housing;
the second shell is arranged in the first shell, a first preheating space is formed between the outer side wall of the second shell and the inner side wall of the first shell, and the second shell is used for accommodating a sintering workpiece;
one end of the air inlet pipe is arranged outside the first shell, and the other end of the air inlet pipe is arranged in the first preheating space and communicated with the first preheating space;
a heating member provided in the first preheating space for heating the gas in the first preheating space to permeate the heated gas from the first preheating space into the second housing, and,
the plurality of flow guide pieces are arranged on the outer wall of the second shell in an annular mode at intervals, so that the gas can permeate into the second shell uniformly.
2. The sintering device with the symmetrical flow guide structure as claimed in claim 1, wherein the plurality of flow guide members are symmetrically arranged at intervals on two circumferential sides of the second casing, and the plurality of flow guide members are arranged opposite to each other two by two in the axial direction of the second casing;
the air inlet pipe is arranged in the center of the top of the first preheating space, and the plurality of flow guide pieces located on two sides of the circumferential direction of the second shell are symmetrically arranged relative to the air inlet pipe.
3. The sintering device with the symmetrical flow guide structure as claimed in claim 1, wherein the gas inlet pipe comprises a first pipe section and a second pipe section, one end of the first pipe section is arranged outside the first casing, the other end of the first pipe section is connected with the second pipe section, the second pipe section is provided with a plurality of gas outlet holes, and the gas outlet holes are respectively arranged on the flow guide pieces circumferentially arranged on two sides of the second casing.
4. The sintering device with the symmetrical flow guide structure as claimed in claim 3, wherein one end of the flow guide member is provided with an arc-shaped interception portion corresponding to at least part of the air outlet holes, the other end of the flow guide member is arranged at the end portion of the second housing, and the flow guide member is arranged obliquely downwards along the extending direction away from the air inlet pipe.
5. The sintering device with the symmetrical flow guide structure as claimed in claim 4, wherein the radii of circles on which the interception portions of the plurality of flow guide members are located increase in sequence in a circumferential direction on the second casing away from the air inlet pipe.
6. The sintering device with the symmetrical flow guide structure according to claim 1, further comprising oven doors provided at both ends of the first and second housings;
the furnace gate includes the furnace gate body and protruding locates the first door body of furnace gate body, the first door body is provided with the second and preheats the space, and the through-hole has been seted up to the lateral wall of the first door body, first preheat the space with the second preheats the space and passes through the through-hole intercommunication, the diameter of the first door body with the external diameter of second casing is unanimous, the first door body is used for sealing the second casing makes gas preheats the space from the second and permeates to in the second casing.
7. The sintering device with the symmetrical flow guide structure as claimed in claim 6, further comprising an outer shell disposed outside the first casing and forming a first heat preservation space between the outer shell and the first casing;
the furnace door still includes the second door body, the second door body set up in the furnace door body with between the first door body, the second door body be provided with the second heat preservation space of first heat preservation space intercommunication, the second door body is used for sealing the first space of preheating, the furnace door body is used for sealing first heat preservation space.
8. The sintering device with the symmetrical flow guide structure according to claim 1, further comprising an object stage and a housing, wherein the object stage is disposed in the second housing, and the housing is disposed outside the first housing;
the protruding supporting part that is equipped with of objective table, the supporting part is used for bearing the sintering work piece the objective table the region beyond the supporting part has seted up a plurality of exhaust holes, the bottom of objective table be provided with a plurality of blast pipes of a plurality of gas vent one-to-one intercommunication, the one end of a plurality of blast pipes all wears to locate in proper order the second casing outside first casing and the shell.
9. The sintering device with the symmetrical flow guide structure according to claim 8, further comprising a wax collecting box, wherein the wax collecting box is arranged outside the housing, the wax collecting box comprises an accommodating space and a discharge port, and the exhaust pipes and the discharge port are both communicated with the accommodating space.
10. The sintering device with the symmetrical flow guide structure as claimed in claim 1, wherein both ends of the heating members are connected to both ends of the first casing, respectively, and at least one of the heating members is disposed between two adjacent flow guide members.
CN202210823566.9A 2022-07-13 2022-07-13 Sintering device with symmetrical flow guiding structure Active CN115200365B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206989703U (en) * 2017-07-27 2018-02-09 江西兴勤电子有限公司 A kind of sintering furnace
CN112066370A (en) * 2019-06-10 2020-12-11 芜湖美的厨卫电器制造有限公司 Full premix combustor and water heater
CN214199733U (en) * 2020-12-30 2021-09-14 湖南维尚科技有限公司 Discharge structure of impurity gas in pressure sintering furnace
CN113847806A (en) * 2021-10-20 2021-12-28 四川大学 Sintering furnace and sintering device
CN114046655A (en) * 2021-12-01 2022-02-15 四川大学 Sintering device and method with uniform sintering atmosphere field

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206989703U (en) * 2017-07-27 2018-02-09 江西兴勤电子有限公司 A kind of sintering furnace
CN112066370A (en) * 2019-06-10 2020-12-11 芜湖美的厨卫电器制造有限公司 Full premix combustor and water heater
CN214199733U (en) * 2020-12-30 2021-09-14 湖南维尚科技有限公司 Discharge structure of impurity gas in pressure sintering furnace
CN113847806A (en) * 2021-10-20 2021-12-28 四川大学 Sintering furnace and sintering device
CN114046655A (en) * 2021-12-01 2022-02-15 四川大学 Sintering device and method with uniform sintering atmosphere field

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