CN115200365B - Sintering device with symmetrical flow guiding structure - Google Patents
Sintering device with symmetrical flow guiding structure Download PDFInfo
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- CN115200365B CN115200365B CN202210823566.9A CN202210823566A CN115200365B CN 115200365 B CN115200365 B CN 115200365B CN 202210823566 A CN202210823566 A CN 202210823566A CN 115200365 B CN115200365 B CN 115200365B
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- flow guiding
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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
- F27B17/00—Furnaces of a kind not covered by any preceding group
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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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
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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
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
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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
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
- F27D2007/023—Conduits
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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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The invention provides a sintering device with a symmetrical flow guiding structure, and relates to the technical field of sintering. The sintering device with the symmetrical flow guiding structure comprises a first shell, a second shell, an air inlet pipe, a heating piece and a plurality of flow guiding pieces. The first preheating space is formed between the second shell and the first shell, one end of the air inlet pipe is arranged outside the first shell, the other end of the air inlet pipe is arranged in the first preheating space and is communicated with the first preheating space, the heating piece is arranged in the first preheating space and is used for heating gas in the first preheating space so that the heated gas permeates into the second shell from the first preheating space, the outer wall of the second shell is arranged through a plurality of guide piece spacing rings, and the gas uniformly flows to the outer peripheral wall of the second shell under the guide action of a plurality of guide pieces after entering the first preset space, so that the gas uniformly permeates into the sintering space in the second shell, sintering of a sintered workpiece is ensured under a uniform temperature environment, and the sintering quality of the sintered workpiece is improved.
Description
Technical Field
The invention relates to the technical field of sintering, in particular to a sintering device with a symmetrical flow guiding structure.
Background
In the sintering industry, sintering furnaces are generally used to sinter articles such as cemented carbide and ceramic materials. The sintering furnace is used for realizing sintering operation by conveying heating gas outside the permeable layer and enabling the heating gas to enter the sintering space inside through the permeable layer, however, the gas conveyed outside the permeable layer by the existing sintering furnace is unevenly distributed, so that the gas unevenly permeates into the sintering space, uneven gas and temperature distribution in the sintering space are caused, and the sintering quality of a sintered object is seriously affected.
Disclosure of Invention
In order to solve the above problems, the present invention provides a sintering device with a symmetrical flow guiding structure, which makes gas uniformly distributed in a preheating space and 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 device having 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 sintered 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 disposed in the first preheating space for heating the gas in the first preheating space so that the heated gas permeates into the second housing from the first preheating space, and,
the plurality of flow guiding pieces are arranged on the outer wall of the second shell at intervals, so that the gas uniformly permeates into the second shell.
In an alternative embodiment, the plurality of flow guiding elements are symmetrically and alternately arranged at two circumferential sides of the second shell, and the plurality of flow guiding elements are arranged in a pair of opposite directions in the axial direction of the second shell;
the air inlet pipe is arranged at the center of the top of the first preheating space, and the plurality of flow guide pieces positioned at the two sides of the circumference of the second shell are symmetrically arranged relative to the air inlet pipe.
In an alternative embodiment, the air inlet pipe comprises a first pipe section and a second pipe section, one end of the first pipe section is arranged outside the first shell, the other end of the first pipe section is connected with the second pipe section, a plurality of air outlet holes are formed in the second pipe section, and a plurality of air outlet holes are respectively arranged towards the periphery of a plurality of guide pieces on two sides of the periphery of the second shell.
In an optional embodiment, one end of the flow guiding member is provided with an arc-shaped interception part, the interception part corresponds to at least part of the air outlet hole, the other end of the flow guiding member is arranged at the end part of the second shell, and the flow guiding member is arranged obliquely downwards along the extending direction away from the air inlet pipe.
In an alternative embodiment, the radius of the circle of the interception parts of the plurality of flow guiding elements increases in sequence in the circumferential direction on the second housing away from the air inlet pipe.
In an alternative embodiment, the sintering device with the symmetrical flow guiding structure further comprises furnace doors, wherein the furnace doors are arranged at two ends of the first shell and the second shell;
the furnace door comprises a furnace door body and a first door body convexly arranged on the furnace door body, wherein a second preheating space is formed in the first door body, a through hole is formed in the side wall of the first door body, the first preheating space is communicated with the second preheating space through the through hole, the diameter of the first door body is consistent with the outer diameter of the second shell, and the first door body is used for sealing the second shell and enabling gas to permeate into the second shell from the second preheating space.
In an alternative embodiment, the sintering device with the symmetrical flow guiding structure further comprises a shell, wherein the shell is arranged outside the first shell, and a first heat preservation space is formed between the shell and the first shell;
the furnace door further comprises a second door body, the second door body is arranged between the furnace door body and the first door body, the second door body is provided with a second heat preservation space communicated with the first heat preservation space, the second door body is used for sealing the first preheating space, and the furnace door body is used for sealing the first heat preservation space.
In an alternative embodiment, the sintering device with the symmetrical flow guiding structure further comprises an objective table and a shell, wherein the objective table is arranged in the second shell, and the shell is arranged outside the first shell;
the utility model discloses a sintering device, including the objective table, the objective table is protruding to be equipped with the supporting part, the supporting part is used for bearing the sintering work piece a plurality of exhaust holes have been seted up to the region beyond the supporting part of objective table, 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 outside second casing first casing and the shell.
In an optional embodiment, the sintering device with the symmetrical flow guiding structure further comprises a wax collecting box, the wax collecting box is arranged outside the shell and comprises a containing space and a discharge port, and the exhaust pipes are communicated with the containing space and the discharge port are communicated with the containing space.
In an alternative embodiment, two ends of the heating element are respectively connected with two ends of the first shell, and at least one heating element is arranged between two adjacent diversion elements.
The sintering device with the symmetrical flow guiding structure provided by the embodiment of the invention has the beneficial effects that: the plurality of guide pieces are arranged on the outer wall of the second shell in a spacing ring mode, so that gas flows to the outer peripheral wall of the second shell uniformly under the guide action of the plurality of guide pieces after entering the first preset space, gas is enabled to permeate into the sintering space in the second shell uniformly, sintering of a sintering workpiece in a uniform temperature environment is guaranteed, uniformity of a temperature field and an atmosphere field is improved, and therefore 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 that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a sintering device 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 device with symmetrical flow guiding structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cross-sectional structure of a sintering device with a symmetrical flow guiding structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second housing and a flow guiding member according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an air inlet pipe according to an embodiment of the present invention;
FIG. 6 is a schematic view of a furnace door structure according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a stage structure according to an embodiment of the present invention.
Icon: 10-a sintering device with a symmetrical flow guiding structure; 100-a housing; 110-a first thermal insulation space; 200-a first housing; 210-a first preheating space; 300-a second housing; 310-sintering space; 400-air inlet pipe; 410-a first pipe section; 420-a second pipe section; 421-air outlet holes; 422-first segment; 423-a second section; 424-third stage; 500-heating element; 600-flow guide piece; 610-a trap; 700-oven door; 710-oven door body; 720-a first door body; 721-a second preheating space; 722-a via; 730-a second door; 731-a second insulation space; 800-stage; 810-a support; 820-vent holes; 830-exhaust pipe; 900-a wax collecting box; 910-accommodation space; 920-discharge port.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a 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 is widely used in the industrial production of materials such as cemented carbide, ceramics and the like. The sintering device 10 with the symmetrical flow guiding structure can uniformly distribute the heated high-temperature gas and uniformly permeate the heated high-temperature gas into the sintering space 310, so that the sintering workpiece is sintered in the environment with uniform temperature field, and the sintering quality of the sintering workpiece is improved.
Further, referring to fig. 2 to 4, the sintering device 10 having the 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, an oven door 700, an objective table 800, a wax receiving box 900, and the like.
The shell 100 is disposed outside the first shell 200, the second shell 300 is disposed in the first shell 200, the oven door 700 is disposed at two ends of the shell 100, the first shell 200 and the second shell 300, and the wax receiving box 900 is disposed outside the shell 100. The air inlet pipe 400, the heating member 500, and the air guide 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 heat maintaining space 110 is formed between the outer sidewall of the first case 200 and the inner sidewall of the outer case 100, a first preheating space 210 is formed between the outer sidewall of the second case 300 and the inner sidewall of the first case 200, and the second case 300 includes a sintering space 310 for accommodating a sintering workpiece 310.
In this embodiment, the gas inlet pipe 400 is used to supply 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 guiding element 600, so as to sinter the sintering workpiece accommodated in the sintering space 310.
In this embodiment, the first housing 200 is a heat-insulating housing, and the heat-insulating housing can insulate the first preheating space 210 and reduce heat transfer to the outside. The second housing 300 may be a graphite housing to facilitate permeation of gas. Of course, in other embodiments, the second housing 300 may be made of other gas permeable materials, and the second housing 300 is not specifically limited herein.
The housing 100, the first housing 200, and the second housing 300 are all cylindrical and are all disposed horizontally.
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 communicates with the first preheating space 210 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 for heating the gas introduced into 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, and the flow guiding members 600 are arranged on the outer wall of the second housing 300 in a spacing and annular manner, so that the gas flows uniformly to the outer peripheral wall of the second housing 300 under the flow guiding action of the flow guiding members 600 after entering the first preset space, so that the gas uniformly permeates into the sintering space 310 in the second housing 300, sintering of the sintering workpiece in a uniform temperature environment is ensured, uniformity of a temperature field and an atmosphere field is improved, and sintering quality of the sintering workpiece is improved.
Further, the plurality of flow guiding members 600 are symmetrically and alternately disposed at both sides of the second housing 300 in the circumferential direction, in other words, the plurality of flow guiding members 600 are alternately disposed around the outer wall of the second housing 300, and the plurality of flow guiding members 600 are symmetrically disposed about the axial vertical section of the second housing 300. The plurality of flow guiding members 600 are disposed opposite to each other in the axial direction of the second housing 300, in other words, the plurality of flow guiding members 600 are distributed at two ends of the second housing 300, and the plurality of flow guiding members 600 at two ends of the second housing 300 are disposed symmetrically with respect to the axial vertical plane of the second housing 300.
Further, the air inlet pipe 400 is disposed at the top center of the first preheating space 210, and the plurality of deflectors 600 positioned at both circumferential sides of the second casing 300 are symmetrically disposed with respect to the air inlet pipe 400.
In this embodiment, the gas is conveyed to the preset space through the gas inlet pipe 400 disposed at the center of the first preheating space 210, and then flows uniformly to the first preheating space 210 at both sides outside the second housing 300 under the guiding action of the plurality of guiding members 600 disposed symmetrically with respect to the axial vertical section of the second housing 300 after entering the first preheating space 210, and the gas flows uniformly to both ends of the second housing 300 at the first preheating space 210 at each side and then flows uniformly to both ends of the second housing 300 at the plurality of guiding members 600 disposed symmetrically with respect to both ends of the second housing 300, so that the gas is uniformly distributed in the first preheating space 210 outside the entire second housing 300, thereby making the gas uniformly permeate into the sintering space 310.
Further, referring to fig. 5, the air inlet 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 housing 200, the other end is connected to the second pipe section 420, the second pipe section 420 is provided with a plurality of air outlet holes 421, and the plurality of air outlet holes 421 face to a plurality of flow guiding members 600 disposed circumferentially on two sides of the second housing 300.
In this embodiment, the second pipe section 420 includes a first section 422, a second section 423 and a third section 424, and two ends of the second section 423 are respectively connected to the middle portions of the first section 422 and the third section 424, so that the second pipe section 420 is H-shaped. The first pipe segment 410 is disposed vertically and is connected to the second segment 423 of the second pipe segment 420. The extending direction of the first section 422 and the third section 424 is consistent with the axial direction of the second housing 300, and a plurality of air outlets are formed at the first section 422 and the third section 424 at equal intervals.
In the present embodiment, the gas enters from the first pipe section 410 and passes through the second pipe section 420 toward the plurality of heating members 500 located at both sides of the second housing 300 to enter the first preheating space 210, and the gas is heated by the heating members 500.
Further, the flow guide 600 has a long strip shape. One end of the flow guiding member 600 is provided with an arc-shaped interception portion 610, the interception portion 610 corresponds to at least part of the air outlet 421, the other end of the flow guiding member 600 is arranged at the end of the second housing 300, and the flow guiding member 600 is arranged obliquely downwards along the extending direction away from the air inlet pipe 400.
In the present embodiment, the arc-shaped concave surface of the interception part 610 faces the air inlet pipe 400, and in case of flowing from the air outlet hole 421 to both sides of the second housing 300 in the circumferential direction, the interception part 610 can make the gas flow more easily toward the flow guide 600, and the flow guide 600 is inclined, so that the gas is facilitated to flow further toward the first preheating spaces 210 at both ends, thereby making the gas uniformly distributed in the first preheating spaces 210.
Further, in the circumferential direction on the second housing 300 away from the intake pipe 400, the radius of the circle in which the entrapping parts 610 of the plurality of flow guides 600 are located sequentially increases.
In this embodiment, the radius of the circle of the interception portion 610 of the flow guiding member 600 near the air outlet 421 is the smallest, and the length of the flow guiding member 600 is the longest; the radius of the circle where the interception parts 610 of the plurality of air guides 600 far from the air inlet hole are located is sequentially increased, and simultaneously the lengths of the plurality of air guides 600 far from the air inlet hole are sequentially increased, so that two adjacent air guides 600 have a length difference. The gas flows along the circumferential direction of the second housing 300 away from the gas inlet pipe 400, so that the gas is advantageously trapped by the trapping part 610, so that the gas flows along the flow guide 600 corresponding to the trapping part 610, thereby ensuring uniform distribution of the gas in the first preheating space 210.
Further, the two ends of the heating element 500 are respectively connected with the two ends of the first housing 200, at least one heating element 500 is disposed between two adjacent flow guiding elements 600, and the areas between the two adjacent flow guiding elements 600 are equally divided, so that the gas can be divided into a certain amount by the heating element 500 when entering the area between the two adjacent flow guiding elements 600, thereby further improving the uniformity of the gas distribution in the first preheating space 210.
Specifically, two or three heating elements 500 are typically disposed between two adjacent flow directors 600.
Further, referring to fig. 6, the door 700 includes a door body 710 and first and second door bodies 720 and 730. Wherein the number of the oven doors 700 is two, and two oven doors 700 are disposed at both ends of the housing 100.
The first door 720 is protruded at one side of the furnace door body 710 facing the sintering space 310, the first door 720 is provided with a second preheating space 721, a through hole 722 is formed in the side wall of the first door 720, the first preheating space 210 is communicated with the second preheating space 721 through the through hole 722, and the first door 720 is used for sealing the second casing 300 and enabling gas to permeate into the second casing 300 from the second preheating space 721.
In this embodiment, the diameter of the first door 720 is identical to the outer diameter of the second housing 300, so that the first door 720 just seals the sintering space 310 when the door 700 is closed, thereby avoiding the gas overflowing from the sintering space 310 to the first preheating space 210.
In this embodiment, the gas entering the first preheating space 210 flows along the flow guiding member 600 to the second housing 300, i.e. to the two ends of the first preheating space 210, and the gas located at the two ends can enter the second preheating space 721 from the first preheating space 210 through the through holes 722 and permeate from the second preheating space 721 to the sintering space 310, that is, the gas can permeate not only along the circumferential direction of the second housing 300 to the sintering space 310, but also from the two ends of the second housing 300 to the sintering space 310, so that the heated gas permeates uniformly from the whole direction of the second housing 300 to the sintering space 310, not only the gas distributed in the first preheating space 210 is more uniform, but also the gas permeated into the sintering space 310 is more uniform, and the sintering quality of the sintered workpiece is effectively improved.
The second housing 300 and the first door 720 are made of the same material, so that smooth permeation of gas can be ensured, and adverse effects caused by different materials can be reduced.
Further, the second door 730 is disposed between the door body 710 and the first door 720, a second insulation space 731 is disposed between the second door 730 and the door body 710, and is in communication with the first insulation space 110, the second door 730 is used for sealing the first preheating space 210, and the door body 710 is used for sealing the first insulation space 110.
In the present embodiment, the first door 720 and the second door 730 are sequentially protruded on the door body 710 to form a stepped shape. The diameter of the second door 730 is identical to the outer diameter of the first housing 200 such that the second door 730 just closes the first preheating space 210 and the second preheating space 721 with the door 700 closed, and the door body 710 closes the first heat maintaining space 110 and the second heat maintaining space 731. In other words, the door body 710 and the case 100 are disposed at intervals outside the second door 730 and the first case 100, respectively, so that heat transfer to the outside in the first preheating space 210 and the second preheating space 721 can be reduced to ensure temperature stability in the first preheating space 210 and the second preheating space 721.
Further, referring to fig. 2, 3 and 7, the stage 800 is disposed in the first preheating space 210 in the second housing 300. The stage 800 is provided with a supporting portion 810 in a protruding manner, the supporting portion 810 is used for bearing a sintered workpiece, a plurality of exhaust holes 820 are formed in an area outside the supporting portion 810 of the stage 800, a plurality of exhaust pipes 830 in one-to-one correspondence with the plurality of exhaust ports are formed in the bottom of the stage 800, and one ends of the plurality of exhaust pipes 830 are sequentially arranged outside the second housing 300, the first housing 200 and the outer housing 100 in a penetrating manner.
In this embodiment, the supporting portion 810 is in a prismatic shape, the protruding supporting portion 810 is used to carry the sintered workpiece, and the region outside the supporting portion 810 is provided with a plurality of exhaust holes 820, so as to avoid the influence of the sintered workpiece on the exhaust efficiency due to shielding of the exhaust holes 820. The exhaust holes 820 and the exhaust pipes 830 are arranged in an array, and the exhaust holes 820 are used for exhausting the exhaust gas such as the wax gas generated during the sintering process, wherein the exhaust pipes 830 also function to support the stage 800.
Further, the wax receiving box 900 is disposed outside the housing 100, the wax receiving box 900 includes a receiving space 910 and a discharge port 920, the plurality of exhaust pipes 830 are communicated with each other, and the discharge port 920 is communicated with the receiving space 910.
In this embodiment, the wax collecting box 900 is provided to perform centralized treatment on the waste gas such as wax gas, so as to facilitate treatment. It will be appreciated that filtration, cleaning, etc. means may be provided within the wax cartridge 900 to filter and clean the exhaust gases such as wax gases.
In practical application, the 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 guiding member 600 and is heated by the heating member 500, most of the heated gas permeates into the sintering space 310 through the second housing 300 in the first preheating space 210, and 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 720 in the second preheating space 721, so as to sinter the sintered workpiece in the sintering space 310. Exhaust gases such as wax gas generated in the sintering process are discharged to the wax receiving box 900 through an exhaust port and an exhaust pipe 830 which are formed in the stage 800, and finally the exhaust gases such as the wax gas are discharged intensively through a dispatch port.
In summary, the embodiment of the invention provides the sintering device 10 with the symmetrical flow guiding structure, and the plurality of flow guiding members 600 are arranged to be annularly arranged on the outer wall of the second housing 300 at intervals, so that the gas flows to the outer peripheral wall of the second housing 300 uniformly under the flow guiding action of the plurality of flow guiding members 600 after entering the first preset space, so that the gas permeates into the sintering space 310 in the second housing 300 uniformly, sintering of the sintering workpiece in a uniform temperature environment is ensured, uniformity of a temperature field and an atmosphere field is improved, and sintering quality of the sintering workpiece is improved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A sintering device having 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 sintered 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 disposed in the first preheating space for heating the gas in the first preheating space so that the heated gas permeates into the second housing from the first preheating space, and,
the plurality of flow guiding pieces are arranged on the outer wall of the second shell at intervals so as to enable the gas to uniformly permeate into the second shell;
the plurality of flow guiding pieces are symmetrically and alternately arranged at two sides of the circumference of the second shell, and the plurality of flow guiding pieces are arranged in a pair-by-pair mode in the axial direction of the second shell;
the air inlet pipe is arranged at the top center of the first preheating space, and the plurality of flow guide pieces positioned at two sides of the circumference of the second shell are symmetrically arranged relative to the air inlet pipe;
the air inlet pipe comprises a first pipe section and a second pipe section, one end of the first pipe section is arranged outside the first shell, the other end of the first pipe section is connected with the second pipe section, a plurality of air outlet holes are formed in the second pipe section, and the air outlet holes face to a plurality of flow guide pieces circumferentially arranged on two sides of the second shell respectively;
one end of the flow guiding piece is provided with an arc-shaped interception part, the interception part corresponds to at least part of the air outlet holes, the other end of the flow guiding piece is arranged at the end part of the second shell, and the flow guiding piece is obliquely downwards arranged along the extending direction far away from the air inlet pipe;
in the circumferential direction of the second housing away from the air inlet pipe, the radius of the circle where the interception parts of the plurality of flow guiding pieces are located is sequentially increased.
2. The sintering device with symmetrical flow guiding structure according to claim 1, further comprising furnace doors provided at both ends of the first and second housings;
the furnace door comprises a furnace door body and a first door body convexly arranged on the furnace door body, wherein a second preheating space is formed in the first door body, a through hole is formed in the side wall of the first door body, the first preheating space is communicated with the second preheating space through the through hole, the diameter of the first door body is consistent with the outer diameter of the second shell, and the first door body is used for sealing the second shell and enabling gas to permeate into the second shell from the second preheating space.
3. The sintering device with symmetrical flow-guiding structure according to claim 2, further comprising a housing disposed outside the first housing and forming a first heat-retaining space between the housing and the first housing;
the furnace door further comprises a second door body, the second door body is arranged between the furnace door body and the first door body, the second door body is provided with a second heat preservation space communicated with the first heat preservation space, the second door body is used for sealing the first preheating space, and the furnace door body is used for sealing the first heat preservation space.
4. The sintering device with symmetrical flow-guiding structure according to claim 1, further comprising an objective table and a housing, the objective table being disposed within the second housing, the housing being disposed outside the first housing;
the utility model discloses a sintering device, including the objective table, the objective table is protruding to be equipped with the supporting part, the supporting part is used for bearing the sintering work piece a plurality of exhaust holes have been seted up to the region beyond the supporting part of objective table, the bottom of objective table be provided with a plurality of blast pipes of a plurality of exhaust holes one-to-one intercommunication, the one end of a plurality of blast pipes all wears to locate in proper order outside second casing first casing and the shell.
5. The sintering device with symmetrical flow guide structure according to claim 4, further comprising a wax receiving box disposed outside the housing, the wax receiving box comprising a receiving space and a discharge port, the plurality of exhaust pipes being in communication with the receiving space and the discharge port being in communication with the receiving space.
6. The sintering device with symmetrical flow guiding structure according to claim 1, wherein two ends of the heating element are respectively connected with two ends of the first shell, and at least one heating element is arranged between two adjacent flow guiding elements.
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| CN202210823566.9A CN115200365B (en) | 2022-07-13 | 2022-07-13 | Sintering device with symmetrical flow guiding structure |
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| CN202210823566.9A CN115200365B (en) | 2022-07-13 | 2022-07-13 | Sintering device with symmetrical flow guiding structure |
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| CN115200365B true CN115200365B (en) | 2023-09-08 |
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Citations (5)
| 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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2022
- 2022-07-13 CN CN202210823566.9A patent/CN115200365B/en active Active
Patent Citations (5)
| 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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| CN115200365A (en) | 2022-10-18 |
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