CN216205254U - Airflow guiding and adjusting structure and atmosphere sintering furnace - Google Patents

Abstract

The utility model provides an airflow guiding and adjusting structure and an atmosphere sintering furnace, which comprise a plurality of material plates and a plurality of adjusting plates; the plurality of material plates are arranged at intervals along a first preset path, the plate surfaces of the material plates are perpendicular to the first preset path, and an airflow channel is formed between every two adjacent material plates; the adjusting plates are respectively movably connected to different material plates and located at the air inlet ends of the air flow channels, and the adjusting plates are used for adjusting the sizes of the air inlets of the air flow channels. The airflow guide adjusting structure and the atmosphere sintering furnace provided by the utility model realize the adjustment of the sizes of the airflows of different airflow channels, increase the adjustable range of the airflow, ensure the widening of the airflow channels, improve the uniformity of the trend of the airflows, have simple structure, do not have the influence of the deformation of parts on the atmosphere consistency in the using process, have stable service performance, and ensure that the process gases can uniformly pass through each layer of airflow channel in the hearth, thereby ensuring the uniformity of the airflows and improving the product performance and the sintering consistency.

Description

Airflow guiding and adjusting structure and atmosphere sintering furnace

Technical Field

The utility model belongs to the technical field of atmosphere sintering equipment, and particularly relates to an airflow guiding and adjusting structure and an atmosphere sintering furnace.

Background

The atmosphere sintering furnace is a device for introducing various process gases into a high-temperature hearth to carry out heat treatment on products. The method is mainly applied to the fields of hard alloy sintering, powder metallurgy, ceramic sintering and the like, is also used for heat treatment such as annealing and the like, and can also be used for low-temperature degreasing, high-temperature sintering or heat treatment of similar products such as thick-film circuits, thick-film resistors, electronic element electrodes, steel heaters, solar panels and the like.

When the atmosphere sintering furnace is used for sintering products, various process gases are introduced into the hearth, so that the sintering requirements of different products are met. The process gas is introduced into a hearth of the atmosphere sintering furnace, and the process gas is discharged from the exhaust holes at the same time, so that the process gas can form different gas flow forms according to different gas flow guide structures.

The consistency of the process gas flow in the hearth of the atmosphere sintering furnace directly influences the product quality, and the consistency of the process gas flow in the hearth of the atmosphere sintering furnace is greatly influenced by the blank degreasing at the early stage of sintering, the volatilization of components at the later stage of sintering, the assistance of gas to product sintering and the like.

The existing atmosphere sintering furnace has unreasonable airflow guide structure, and the consistency of sintered products is poor, the performance is unqualified and the yield is reduced because the airflow of process gas in a hearth is inconsistent.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an airflow guide adjusting structure and an atmosphere sintering furnace, aiming at ensuring that process gas can uniformly pass through each layer of material plate in a hearth, thereby ensuring the uniformity of airflow and improving the performance and sintering uniformity of products.

In order to achieve the purpose, the utility model adopts the technical scheme that:

in a first aspect, there is provided an airflow guide adjustment structure comprising:

the plurality of material plates are arranged at intervals along a first preset path, the plate surfaces of the material plates are perpendicular to the first preset path, and an airflow channel is formed between every two adjacent material plates; and

and the adjusting plates are respectively and movably connected to different material plates and positioned at the air inlet ends of the airflow channels, and the adjusting plates are used for adjusting the sizes of the air inlets of the airflow channels.

With reference to the first aspect, in a possible implementation manner, a plate surface of the adjusting plate is perpendicular to a plate surface of the flitch and perpendicular to a direction of the airflow in the airflow channel, the adjusting plate is slidably connected to the flitch along a second preset path, and the second preset path is parallel to the first preset path.

Combine the first aspect, in a possible implementation, the edge of flitch is equipped with the direction stopper, be formed with the direction spout in the direction stopper, the regulating plate slides and inserts and locates the direction spout, be equipped with the retaining member on the direction stopper, the retaining member is used for locking in the direction spout the regulating plate.

With reference to the first aspect, in one possible implementation manner, the airflow direction adjustment structure further includes:

the heat insulation main body forms an accommodating space, an opening is formed in at least one end of the accommodating space, the material plate and the adjusting plate are both located in the accommodating space, the opening direction of the heat insulation main body is perpendicular to the first preset path, and the heat insulation main body is provided with an exhaust hole; and

the heat preservation cover is arranged at the opening of the heat preservation main body in a covering mode, and a gap communicated with the accommodating space and the external space is formed between the heat preservation cover and the heat preservation main body.

With reference to the first aspect, in one possible implementation manner, the exhaust hole is covered with a filter screen.

With reference to the first aspect, in one possible implementation manner, an opening direction of the exhaust hole is parallel to the first preset path.

With reference to the first aspect, in a possible implementation manner, the two opposite ends of the heat preservation main body are both formed with openings, and the two heat preservation covers are respectively covered on the two openings of the heat preservation main body.

With reference to the first aspect, in a possible implementation manner, a plurality of material plates located in the same row form a plurality of material plate rows, the plurality of material plate rows are distributed along a direction perpendicular to the first preset path, and the exhaust hole is opened in the lower side wall of the thermal insulation main body and located between two adjacent material plate rows;

or, a plurality of material plates positioned in the same column form a material plate column, the material plate column is provided with one exhaust hole, and the exhaust hole is formed in the position, close to one of the heat preservation covers, on the lower side wall of the heat preservation main body.

With reference to the first aspect, in a possible implementation manner, the gap has a first gap segment parallel to the first preset path and a second gap segment perpendicular to the first preset path, and two ends of the second gap segment are respectively communicated with the first gap segment and the accommodating space.

Compared with the prior art, the scheme shown in the embodiment of the application, through set up the regulating plate on the flitch, the air current size that realizes different airflow channel is adjustable, the adjustable scope of airflow has been increased, guarantee that airflow channel is wide, the homogeneity of air current trend has been improved, and its simple structure simultaneously, there is not the influence of part deformation to atmosphere uniformity in the use, performance is stable, guarantee that process gas can pass through each layer of airflow channel in the furnace uniformly, thereby guarantee the airflow uniformity, reach the purpose that improves product property and sintering uniformity.

In a second aspect, the embodiment of the utility model further provides an atmosphere sintering furnace, which includes the above gas flow guiding adjustment structure.

The beneficial effect of the atmosphere fritting furnace that this application provided is the same with the beneficial effect of above-mentioned air current direction regulation structure, no longer gives unnecessary details here.

Drawings

Fig. 1 is a front sectional view of an airflow guide adjusting structure according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a schematic view of an assembly structure of a material plate and an adjusting plate according to a second embodiment of the present invention;

FIG. 5 is a top view of FIG. 4;

fig. 6 is a front sectional view of the airflow guide adjusting structure according to the third embodiment of the present invention;

fig. 7 is a side view of an assembly structure of the material frame, the material plate and the adjusting plate according to the fourth embodiment of the present invention.

Description of reference numerals:

100. a material plate;

200. an adjusting plate;

300. an air flow channel;

400. a guide limiting block; 410. a guide chute;

500. a locking member;

600. a heat preservation main body; 610. an accommodating space; 620. an exhaust hole;

700. a heat preservation cover;

800. a gap; 810. a first gap section; 820. a second gap segment;

900. a material rack; 910. a main frame body; 920. and a support body.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 6 together, the airflow direction adjusting structure provided by the present invention will now be described. The airflow guide adjusting structure comprises a plurality of material plates 100 and a plurality of adjusting plates 200; the plurality of material plates 100 are arranged at intervals along a first preset path, the plate surfaces of the material plates 100 are perpendicular to the first preset path, and an airflow channel 300 is formed between every two adjacent material plates 100; the adjusting plates 200 are movably connected to different material plates 100 and located at the air inlet ends of the airflow channels 300, and the adjusting plates 200 are used for adjusting the sizes of the air inlets of the airflow channels 300.

Before the air-conditioning device is used, the posture of the adjusting plate 200 can be adjusted to adjust the size of the air inlet port of the air flow channel 300, in the working process, process air enters from one end of the air flow channel 300, circulates in the air flow channel 300 along the preset direction, and is led out by the exhaust structure after flowing out of the air flow channel 300. Wherein, the process gas includes but is not limited to hydrogen, oxygen, nitrogen, air and inert gas, which is suitable for meeting the sintering requirements of different products.

The air current direction that this embodiment provided adjusts the structure, compared with the prior art, through set up regulating plate 200 on flitch 100, the air current size that realizes different airflow channel 300 is adjustable, the adjustable scope of airflow has been increased, guarantee that airflow channel 300 is wide, the homogeneity of air current trend has been improved, and simultaneously its simple structure, there is not the influence that the part warp to the atmosphere uniformity in the use, performance is stable, guarantee that process gas can pass through each layer of airflow channel in the furnace uniformly, thereby guarantee the air current uniformity, reach the purpose that improves product property ability and sintering uniformity.

In some embodiments, referring to fig. 7, the airflow guiding and adjusting structure further includes a material rack 900 for supporting the material plates 100, the material rack 900 includes a main frame body 910 and a plurality of supporting frame bodies, the supporting frame bodies are disposed on the main frame body 910, and the plurality of supporting frame bodies are distributed along a first predetermined path, each supporting frame body includes two supporting bodies 920 disposed on two opposite sides of the supporting frame body, respectively, a slot perpendicular to the surface of the adjusting plate 200 is disposed on the supporting body 920, two opposite lateral edges of the material plate 100 are in insertion fit with the slot, so as to achieve mounting and supporting of the material plate 100, and a stable airflow channel 300 is formed between two adjacent material plates 100. It should be understood that the number of the material plates 100 does not need to correspond to the number of the support frame body one-to-one, and the material plates 100 are set to different intervals and numbers according to the size of the hearth, the type of the workpiece and the like, so as to ensure that the effective airflow channel 300 can be formed.

Optionally, the material plate 100 and the material rest 900 may be made of tungsten, molybdenum, alumina, stainless steel, zirconia, graphite, silicon nitride, silicon carbide, boron nitride, or the like.

In some embodiments, referring to fig. 1 to 7, the plate surface of the adjusting plate 200 is perpendicular to the plate surface of the flitch plate 100 and perpendicular to the direction of the air flow in the air flow channel 300, and the adjusting plate 200 is slidably connected to the flitch plate 100 along a second predetermined path, which is parallel to the first predetermined path. The air inlet area of the air flow channel 300 can be adjusted by adjusting the height of the adjusting plate 200, the adjusting action of the adjusting plate 200 cannot occupy the inner space of the air flow channel 300, and the workpiece placement on the material plate 100 is prevented from being influenced in the adjusting process.

Specifically, referring to fig. 4 and 5, the edge of the material plate 100 is provided with a guide limiting block 400, a guide sliding groove 410 is formed in the guide limiting block 400, the adjusting plate 200 is slidably inserted into the guide sliding groove 410, the guide limiting block 400 is provided with a locking member 500, and the locking member 500 is used for locking the adjusting plate 200 in the guide sliding groove 410.

In the adjusting process, the locker 500 maintains the unlocked state so that the adjusting plate 200 can slide in the guide chute 410, and after sliding to a designated position, the adjusting plate 200 can be fixed by locking the locker 500, the adjusting process is simple, and the adjusting plate 200 can be stably moved in the adjusting process.

Specifically, referring to fig. 4 and 5, the guide limiting block 400 is provided with a screw hole communicated with the guide sliding groove 410, the locking member 500 is a screw rod adapted to the screw hole, the inner end of the screw rod extends into the guide sliding groove 410 and can abut against the edge of the adjusting plate 200, so that the adjusting plate 200 is limited by extrusion, and the positioning device is simple in structure, convenient to operate and reliable in positioning effect.

Optionally, in order to facilitate screwing, a screwing handle is further formed at the outer end of the screw rod.

A modified embodiment of the adjusting plate 200, not shown in the drawings, is characterized in that one side edge of the adjusting plate 200 is rotatably connected to the material plate 100 through a rotating shaft, a driving motor is arranged on the material plate 100, the rotating shaft and an output shaft of the driving motor are in transmission connection through a transmission structure, and the opening and closing of the air inlet port of the air flow channel 300 are adjusted through rotation of the adjusting plate 200. The transmission structure can be a gear transmission structure, a belt transmission structure or a chain transmission structure, and the like, and can realize the transmission function, which is not listed here.

In some embodiments, referring to fig. 1 to 3 and 6, the airflow guide adjusting structure further includes an insulation main body 600 and an insulation cover 700; the heat preservation main body 600 forms an accommodating space 610, at least one end of the accommodating space 610 forms an opening, the material plate 100 and the adjusting plate 200 are both positioned in the accommodating space 610, the opening direction of the heat preservation main body 600 is perpendicular to the first preset path, and the heat preservation main body 600 is provided with an exhaust hole 620; the heat-insulating cover 700 covers the opening of the heat-insulating main body 600, and a gap 800 communicating the accommodating space 610 with the external space is formed between the heat-insulating cover 700 and the heat-insulating main body 600. Wherein, the heat preservation main body 600 is connected with the inner wall of the hearth, and the heat preservation cover 700 is connected with the furnace door.

The heat preservation main part 600 and the heat preservation cover 700 of this embodiment are used for keeping heating temperature, through setting up clearance 800, under the prerequisite that does not influence the heat preservation effect, make accommodation space 610 self can realize the gas flow of certain degree, avoid furnace heat leakage, destroy the uniformity of furnace temperature.

It should be understood that an air inducing device is correspondingly disposed outside the air outlet 620, so as to provide a circulating power for the process gas in the accommodating space 610.

Optionally, the air inlet position and the air outlet position of the accommodating space 610 are arranged oppositely, for example, when the air inlet position is located at the front side, the air outlet position is located at the rear side; when the air inlet position is positioned at the upper side, the air outlet position is positioned at the lower side; when the air inlet position is located at the upper part of the front side, the air outlet position is located at the lower part of the rear side, and the like. The arrangement mode enables the gas to be fully diffused and circulated in the accommodating space 610, and ensures that the workpieces on the material plate can be fully contacted with the process gas.

On the basis of the above embodiment, since the gap 800 is formed between the thermal insulation cover 700 and the thermal insulation main body 600, in order to avoid the thermal insulation performance from being affected by too many holes formed in the thermal insulation structure, the gap 800 may be selected as an air intake passage.

Optionally, the width of the gap 800 is 5 mm-8 mm, so that the gas circulation of the gas inlet is ensured, and meanwhile, the heat preservation effect is also prevented from being influenced.

In some embodiments, referring to fig. 1-3 and 6, to improve the uniformity of the gas flow, the gap 800 is a continuous annular gap distributed along the circumference of the opening of the thermal insulation body 600.

In some embodiments, not shown in the drawings, the exhaust hole 620 is covered with a filter screen, and the filter screen can prevent the slag from entering the air outlet pipeline along with the air flow, so that the air outlet pipeline is protected, and the risk of blocking the air outlet pipeline is reduced.

Referring to fig. 1 and 6, the opening direction of the exhaust hole 620 is parallel to the first predetermined path. In this embodiment, the flowing direction of the gas in the gas flow channel 300 is perpendicular to the exhausting direction of the exhaust hole 620, so as to effectively improve the uniformity and sufficiency of the flowing of the process gas in the gas flow channel 300, thereby being beneficial to improving the quality of the product.

In some embodiments, referring to fig. 1 and 6, two openings are formed at two opposite ends of the thermal insulation main body 600, and two thermal insulation covers 700 are respectively disposed on the two openings of the thermal insulation main body 600. Gaps 800 are formed between the two heat preservation covers 700 and the heat preservation main body 600, and the sintering furnace is suitable for sintering furnaces with furnace doors on two sides.

Referring to fig. 6, a plurality of flitch 100 in the same row form a plurality of flitch rows, the flitch rows are distributed along a direction perpendicular to the first preset path, and the exhaust holes 620 are opened in the lower side wall of the insulation main body 300 and between two adjacent flitch rows. The dotted lines in fig. 6 indicate gas flow paths, and it can be seen that the process gases respectively enter the accommodating space 610 from the two gaps 800 at the two ends of the thermal insulation body 600, flow through the gas flow channels 300, converge between the two adjacent material plate rows, and are discharged through the gas discharge holes 620 located between the two adjacent material plate rows.

Specifically, referring to fig. 6, there are two flitch columns, and the adjusting plate 200 is disposed away from adjacent sides of the two flitch columns.

Referring to fig. 1, a plurality of material plates 100 in the same row form a material plate row, one material plate row is provided, and the exhaust holes 620 are formed in the lower sidewall of the thermal insulation main body 600 near one of the thermal insulation covers 700. The dotted lines in fig. 1 indicate gas flow paths, and it can be seen that process gases enter the accommodating space 610 from the gap 800 corresponding to one end of the thermal insulation body 600, and after flowing through the gas flow channels 300, the process gases in different gas flow channels 300 are gathered at a position close to the other end of the thermal insulation body 600 in the accommodating space 610 and finally exhausted through the exhaust hole 620. It should be understood that a small portion of the process gas collected at the other end of the thermal insulation body 600 will overflow from the corresponding gap 800 at that end, but will not affect the normal operation of the sintering furnace.

In a modified embodiment of the thermal insulation body 600, not shown, an opening is formed at one end of the thermal insulation body 600 and the other end is closed. In this case, a plurality of material plates 100 in the same row form a row of material plates, one material plate row is provided, and the exhaust hole 620 is opened at a position near the closed end on the lower sidewall of the thermal insulation main body 600. The process gas enters the accommodating space 610 from the gap 800 corresponding to the opening end of the thermal insulation main body 600, and after flowing through the gas flow channels 300, the process gas in different gas flow channels 300 is gathered at a position close to the other end of the thermal insulation main body 600 in the accommodating space 610, and finally discharged through the exhaust hole 620.

In some embodiments, referring to fig. 1 to 3 and fig. 6, to further improve the effect of preventing heat leakage from the furnace, the gap 800 has a first gap section 810 parallel to the first predetermined path and a second gap section 820 perpendicular to the first predetermined path, and two ends of the second gap section 820 are respectively connected to the first gap section 810 and the accommodating space 610.

In specific implementation, taking fig. 1 as an example, the plurality of material plates 100 are distributed in parallel and at intervals along a first preset path parallel to the up-down direction to form a material plate row, and the adjusting plates 200 are all located on the left side of the material plate row; after the process gas enters from the left gap 800, it flows through the gas flow channel 300 from left to right and then is discharged from the gas discharge hole 620 located at the lower portion of the right side of the thermal insulation body 600, and a small amount of the process gas may overflow from the right gap 800.

Note that no workpiece is placed on the uppermost flitch 100.

Based on the same inventive concept, the embodiment of the application also provides an atmosphere sintering furnace, which comprises the airflow guide adjusting structure.

The beneficial effects of the atmosphere sintering furnace provided by the utility model are the same as those of the airflow guiding and adjusting structure, and are not repeated herein.

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 utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An airflow guide adjustment structure, comprising:

the plurality of material plates are arranged at intervals along a first preset path, the plate surfaces of the material plates are perpendicular to the first preset path, and an airflow channel is formed between every two adjacent material plates; and

and the adjusting plates are respectively and movably connected to different material plates and positioned at the air inlet ends of the airflow channels, and the adjusting plates are used for adjusting the sizes of the air inlets of the airflow channels.

2. The airflow direction adjustment structure of claim 1, wherein the plate surface of said adjustment plate is perpendicular to the plate surface of said flitch and perpendicular to the direction of the airflow in said airflow channel, said adjustment plate being slidably connected to said flitch along a second predetermined path, said second predetermined path being parallel to said first predetermined path.

3. The airflow guiding and adjusting structure as claimed in claim 2, wherein a guiding and limiting block is disposed at the edge of the material plate, a guiding sliding slot is formed in the guiding and limiting block, the adjusting plate is slidably inserted into the guiding sliding slot, and a locking member is disposed on the guiding and limiting block and used for locking the adjusting plate in the guiding sliding slot.

4. The airflow direction adjustment structure of any one of claims 1-3, further comprising:

the heat insulation main body forms an accommodating space, an opening is formed in at least one end of the accommodating space, the material plate and the adjusting plate are both located in the accommodating space, the opening direction of the heat insulation main body is perpendicular to the first preset path, and the heat insulation main body is provided with an exhaust hole; and

the heat preservation cover is arranged at the opening of the heat preservation main body in a covering mode, and a gap communicated with the accommodating space and the external space is formed between the heat preservation cover and the heat preservation main body.

5. The airflow direction adjustment structure of claim 4, wherein said exhaust hole is covered with a filter screen.

6. The airflow guide adjustment structure of claim 4, wherein the opening of said exhaust hole is oriented parallel to said first predetermined path.

7. The airflow guide adjusting structure according to claim 6, wherein two openings are formed at opposite ends of the thermal insulation main body, and two thermal insulation covers are provided to cover the two openings of the thermal insulation main body, respectively.

8. The airflow guide adjustment structure according to claim 7, wherein a plurality of said material plates located in the same row form a plurality of material plate rows, said plurality of material plate rows are distributed along a direction perpendicular to said first predetermined path, and said air discharge holes are opened in a lower side wall of said insulation body and located between two adjacent material plate rows;

or, a plurality of material plates positioned in the same column form a material plate column, the material plate column is provided with one exhaust hole, and the exhaust hole is formed in the position, close to one of the heat preservation covers, on the lower side wall of the heat preservation main body.

9. The airflow guide adjustment structure as claimed in claim 4, wherein the gap has a first gap section parallel to the first predetermined path and a second gap section perpendicular to the first predetermined path, and both ends of the second gap section are respectively connected to the first gap section and the accommodating space.

10. An atmosphere sintering furnace comprising a gas flow direction regulating structure according to any one of claims 1 to 9.

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